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LIBRARY OF MARINE BIOLOGICAL LABORATORY

WOODS HOLE, MASS.

LOANED BY AMERICAN MUSEUM OF NATURAL HISTORY

MEMOIRS

ON THE

COLEOPTERA

BY

THOS. L. CASEY

VIII

1918

PUBLISHED BY

THE NEW ERA PRINTING COMPANY
LANCASTER, PA.

CONTENTS

PAGE

I — A Review of the North American Bembidiinse I

II — Studies Among Some of the American Amarinae

and Pterostichinae 224

III — Observations on the American Pogoninse, in-
cluding Trechus 394

IV — Miscellaneous Notes and Corrections 413

I— A REVIEW OF THE NORTH AMERICAN BEMBIDIIN^.

In almost every considerable collection of the Insecta, there are
usually many unworked sections consisting principally of uniden-
tified material. This is especially true of those accumulated by
students not having with them assistants to perform the more
mechanical work relating to mounting and cleaning specimens and
restoring such as may deteriorate through unfavorable conditions
in the lapse of time. Among the unstudied sections of the writer's
collection, none have been more discomforting than those com-
prising some subfamilies of the Carabidae, and the material at hand,
though very extensive, has been thus far only partially identified
and so comparatively useless. It was therefore with the idea of
bringing some order out of chaos that the revisions of the present
volume were drawn up, not however without many misgivings as
to the attitude to be assumed by those having different conceptions
regarding what should or should not be called species. These dif-
ferences of view will continue, however, so long as our knowledge
remains imperfect.

Subfamily BEMBIDIINvE.

This large and clearly circumscribed Carabid complex has never
been the subject of much attentive systematic study in this country,
the only monographic treatment attempted thus far being the
essays on Bembidion and Tachys published by Mr. Roland Hay-
ward (Tr. Am. Ent. Soc., 1897, p. 32 and 1. c., 1900, p. 191). In
these papers Mr. Haywood records as valid 188 species, and adding
to these about a dozen more, either unadmitted among those al-
ready published, or subsequently described as' new, our known
species at the time of that author's investigations amounted to
about 200. A few have been since published by Fall and Blaisdell.
I have made the collecting of material in this subfamily a special
object during many years, thoroughly searching through debris
along water courses and in the moist mosses of numerous ravines,
especially in the Pacific coast regions, and have added besides a
considerable number of species taken by Prof. Wickham during his
T. L. Casey, Mem. Col. VIII, Oct. 1918.

2 MEMOIRS ON THE COLEOPTERA

many wanderings through widely separated parts of the country.
The material before me is for these reasons notably full, so that I
have been obliged to recognize some 437 species and subspecies
composing it, which number must be increased by about 82 that
are not at present in my collection, making in all 519 species and
subspecies, or about 2.6 times as many as were admitted by Mr.
Hayward and subsequent authors. The species and subordinate
categories given as valid in the most recent European catalogue
amount to somewhat over three hundred. The continent of North
America should not, however, be compared faunistically with Europe
alone, but with the entire Eurasian continent from the Atlantic to
the Pacific, and it is probable that at least some six hundred species
are already known from those vast regions of the earth. In spite of
these formidable numbers, I feel certain that in both America and
Eurasia there are still hundreds of unknown forms to be announced
by future systematists. I can at present recall but very few species
common to the Atlantic and Pacific areas of North America, and
there are not many that can be considered as even subspecifically
related to one another.

The genera of Bembidiinae, so far as concerns the American fauna,
may be defined as follows :

Elytra with the sutural stria not recurved at tip, the scutellar stria pres-
ent except in Lymneops; size of the body much diversified 2

Elytra with the sutural stria recurved at tip; scutellar stria wanting;
body always very small in size 6

2 — Eyes very large and prominent; outer maxillary lobe with the seg-
ments free 3

Eyes small or wanting 4

3 — Elytra densely punctate, not striate Tachypus Dej.

Elytra not diffusedly punctate, striate Bembidion Latr.

4 — Segments of the outer maxillary lobe anchylosed; habitus as in
Trechus Amerizus Chd.

Segments free as in Bembidion 5

5 — Eyes wanting, sutural stria not attaining the apex, the scutellar ser-
ies feebly developed though traceable; body minute, rather narrow.

Anillus Duval

Eyes present; sutural stria entire, with a trace of apical recurvature, the
scutellar obsolete; eighth stria entire but broadly and feebly im-
pressed; body small in size, subparallel Lymneops n. gen.

6 — Eighth elytral stria coarse, deep, entire and foveate; each elytron
with six punctured discal striae, rarely abbreviated at tip; seventh
stria completely obsolete; mentum with two very large foramini-
form excavations; body convex, with more or less thick integument.

Pericompsus Lee.

BEMBIDIIN^E 3

Eighth stria entire but fine, somewhat irregular; each elytron with seven
fine subpunctulate discal striae; mentum with two rather large deep
circular foraminiform foveae; body depressed, the integument thin,
the antennae thick and rather short Paratachys n. gen.

Eighth stria broadly interrupted medially; discal stria obsolete, except
toward the suture 7

7 — Body oval, convex; mentum without foraminiform excavations.

Tachyura Mots.

Body depressed, oblong-oval in form 8

8 — Mentum with two foraminiform cavities, which however are much
smaller than in Pericompsus Tachys Steph.

Mentum without foraminiform cavities 9

9 — Side margins of the pronotum normal, the edge finely reflexed.

Tachyta Kirby

Side margins deeply and evenly excavated from base to apex, forming
a sharply defined gutter at each side Tachymenis Mots.

Blemus cenescens Lee., is omitted from the above table of genera
and from further consideration at the present time; it belongs to
the genus Micratopus, denned by the writer (Memoirs Col., V,
1914, p. 42) for a small species — fusciceps — from Vicksburg, Miss.,
apparently differing from anescens in its longer antennse, these
being from two-thirds to three-fourths as long as the body, but in
anescens described as half by LeConte, and scarcely half by Hay-
ward, as long as the body. sEnescens was assigned to Lymnastis
by Motschulsky, but the diffused punctures of the entire upper
surface in Lymnastis indica, the type of the genus, would seem to
indicate that Micratopus is not the same as Lymnastis, although
there is possibly a close generic affinity. The third palpal joint of
Lymnastis is said to be "elargi"; it is only normally inflated in
Micratopus. With Tachys, to which tznescens is referred by Hay-
ward, there is no real relationship whatever. We have in fact in
Micratopus a remarkable type of the Carabidae, for the single supra-
orbital seta would constitute of it an exception in the entire sub-
order Harpalinee Bisetosae if, because of palpal structure, we assign
it to the Bembidiinae, and the subulate palpi would cause it to be
a singular exception if placed among the Harpalinae Unisetosae. It
was this extraordinary condition of relationship that prompted the
writer to propose a distinct subfamily group for Micratopus. How-
. ever, on further consideration I am now disposed to believe that,
in this case, the loss of one of the supra-orbital setae — probably due
to the extreme retraction of the head — is of less value taxonomi-

4 MEMOIRS ON THE COLEOPTERA

cally than the possession of subulate palpi, in connection with a
Tachys-\ike habitus, and I would therefore suggest that Micratopus
form a tribal division of the Bembidiinae, all the other genera above
denned together forming another tribe.*

Tachypus Dej.

In the most recent European catalogue this genus is given the
name Asaphidion Gozis, but I leave it here under the name by which
it will be recognized universally. The only reference to the genus
as occurring in America to be recalled at present, is the description
of Tachypus elongatus by Motschulsky (Kaf. Russ., p. 16, note 5),
redescribed by Mannerheim (Bull. Mosc., 1853, III, p. 146). It
was said to be from the Island of Sitka, Alaska, by Motschulsky,
but with a note of interrogation; so Tacliypus may not be truly
established in North America at all. The original type was lent
to Mannerheim for description. The prothorax is said to be longer
than wide, cordate and canaliculate; it is much shorter than wide
in both caraboides and flavipes of the European fauna.

Bembidion Latr.

This unwieldy genus is essentially northern in distribution, while
Tachys and allied genera are also abundant in tropical regions. It
is well represented however in our Sonoran faunas, but compara-
tively rare in our southeastern maritime states, and when occurring
there the species are nearly always peculiarly isolated, as for in-
stance in the case of fraternum Lee., a species wholly unknown to
me at present.

The grouping of the species given below is in the main similar to
that proposed by LeConte and Hay ward, but I have been obliged
to modify their conclusions in a number of cases. For instance
the species allied closely to honestum Say, do not belong at all with
bifossulatum Lee., but are to be referred to the ustulatum group,
constituting a part of the subgenus Peryphus. Then I have made
a distinct group of erasum Lee., including a large number of species,

* Since the original description of Micratopus was published, I have observed in
the type species a regular series of short erect setae along the entire length of each of
the strial intervals, but only visible under a particular angle of illumination and there-
fore overlooked. These setae arise from punctures so very minute and feeble as to be
barely traceable under considerable amplification.

I

BEMBIDIIN/E 5

many of which were referred to the planatum group by Hayward.
Some assigned to the latter group by that author, such as nebras-
kense Lee., are also to be shifted to Peryphus. In the erasum group
is also included the irldescens group of Hayward. Affine does not
constitute a group but is to be referred to Notaphus, where it comes
near the Mexican cognatum of Dejean. Tigrinum Lee., should evi-
dently form a distinct and isolated subgeneric group. As shown by
the species festivum, recorded further on under the bifasciatum group,
the replacement of the usual two dorsal foveae of the elytra by three,
as seen in rickseckeri and scudderi, cannot be made the basis for
separate subgeneric groups and these will be found therefore under
the ustulatum and variegatum groups respectively. It should be
added that I have also adopted the plan of giving subgeneric names
to the various groups, as has been done in the recent European
catalogue of Heyden, Reitter and Weise.

Our species may be assigned to the following sixteen groups, all
of which seem to be definitely subgeneric in character:

Eighth elytral stria remote from the margin and subsimilar to the sev-
enth stria 2

Eighth stria much less widely separated from the margin, except in the
nigruni and brevistriatum sections of the ustulatum group, sometimes
very close to the margin, and, as a rule more coarsely and deeply
impressed than the seventh 3

2 — Prothorax subquadrate; elytral foveae moderate in size, two in num-
ber as usual, sometimes within depressed and often more metallic
areolae I (litorale)

Prothorax broadly cordiform, the two elytral foveae large and deep.

II (b if oss ula turn)

3 — Humeri sharply angulate at base, the latter strongly margined for
some distance internally; prothorax almost as wide as the elytra,
subquadrate 4

Humeri rounded, sometimes feebly angulate at base, the latter not mar-
gined, except by the more or less brief incurvature of the lateral
margin, which however is sometimes wholly obsolete, as in the
semistriatum group 5

4 — Striae regular and finely punctulate, though diminishing in depth
more or less rapidly — and often obsolete — laterad; intervals not
punctate; two dorsal punctures distinct and on the third interval;
mentum tooth sinuato-truncate at tip Ill (nitiduni)

Striae wholly obsolete posteriorly, coarsely punctate basally, the surface
also with scattered setigerous punctures but apparently without
the usual two dorsal foveae; mentum tooth short, bilobed.

IV (Iccvigatum)

5 — =Elytral striae impunctate, rarely punctulate, but then only very
finely or imperfectly 6

6 MEMOIRS ON THE COLEOPTERA

Elytral striae distinctly and normally punctate II

6 — The striae very unequal to wholly obsolete, always gradually fine to
broadly obsolete externally 7

The striae coarse and deeply impressed, entire; body oblong and very
convex 10

7 — Elytra never having paler maculation 8

Elytra each with two clearly defined pale spots, the surface very smooth,
the striae frequently wholly wanting 9

8 — Body convex, the general aspect in typical forms somewhat as in
the nitidum group, except that the prothorax is always much nar-
rower than the elytra; striae only visible or distinct suturad as a
rule V (erasum}

Body strongly depressed, oblong, the elytral striae well impressed and
subequally distinct throughout the width, entire as a rule; body
usually black throughout, never with distinct metallic lustre.

VI (planatum)

9 — Body only moderately convex, small, the general aspect as in the
ustulatum group, the prothorax subcordate VII (bifasciatuni)

10 — General aspect somewhat as in the ustulatum group, the two dorsal
punctures at the third stria, as in the three preceding; body testa-
ceous throughout, the elytra with cloud-like dusky maculation, ob-
long, the prothorax but little narrower than the elytra; antennae
unusually thick VIII (tigrinum)

II — The two or three dorsal setigerous punctures on or adhering to the
third stria 12

The dorsal punctures on the third interval, sometimes, however, as in
the vile section of the variegatum group, rather close to the third
stria 15

12 — Intervals without punctures of any kind 13

Intervals with a single series of minute setigerous punctures 14

13 — Hind body always much wider than the prothorax, the latter diver-
sified in form but, typically, subcordate; coloration also varied.

IX (ustulatum)

Hind body barely at all wider than the prothorax, the general form more
cylindric; elytra pale, with darker marking X (ephippigerum)

14 — Prothorax cordate; elytral margin not at all incurved at the humeri.

XI (semistriatum)

15 — Frontal sulci subparallel to oblique, but never in contact at the
anterior margin 16

Frontal sulci very strongly converging, in mutual contact at apex. . . . 18

16 — Body oblong, greatly diversified in size, convexity, coloration and
outline of the prothorax, the basal angles of which are always
sharply marked XII (variegatum)

Body oblong-oval, the prothorax never much narrower than the elytra,
with rounded sides and obsolete basal angles, the basal margin
thickly beaded as in the quadrimaculatum group; posterior of the
two dorsal punctures submedially situated on the third interval,
the anterior more or less adherent to the third stria.

XIII (sphcsroderum)

Body ventricose, always notably small in size, the elytra much wider

BEMBIDIIN/E 7

than the prothorax, which is generally cordiform, with the side mar-
gins not abruptly grooved; frontal sulci oblique but never in con-
tact at apex 17

17 — Frontal sulci never more than partially double, each elytron usually
having two small distinct pale spots XIV (quadrimaculatum)

Frontal sulci evenly and closely double throughout their extent, rather
strongly converging; elytra nearly as in the assimile group.

XV (sulcatum}

1 8 — Body small and more or less ventricose, nearly as in the two pre-
ceding groups, the elytra, typically, having each a small external
pale spot near the apex; pronotal side margins abruptly though not
coarsely grooved XVI (assimile}

The Icevigattim, tigrinum and sulcatum groups are each repre-
sented by a single species, and the ephippigerum and semistriatum
groups each by two. The largest groups are those represented by
erasum, ustulatum and variegatum, the last named being by far the
largest of the genus in America, though in the European fauna
the ustulatum group assumes this role. The proper identification
of ustulatum Linn., has caused a good deal of discussion and re-
search, but it is known now to be typified by a species having a
cordate prothorax, much narrower than the elytra, the latter with
large nubilous paler humeral and subapical areas and two dorsal
punctures on the third stria. No species of the sphceroderum group
seems to have been known to Mr. Hay ward, but at the time he
drew up his monograph it was represented by three or four dis-
tinct Mexican forms, described by Bates in the "Biologia." In
the material at hand there are a few additional species from North-
ern Mexico, Arizona and New Mexico. It has the aspect of a dis-
tinct genus, but is allied to the European Philochfhus.

Group I — litorale
Subgenus Odontium Lee.

Bracteon Bedel.

This group was divided into two in the Hay ward monograph,
but a small section consisting of punctatostriatum Say, hesperium
Fall and a new one described below, is so evidently intermediate
between the litorale type, having two large flattened and chagrined
depressions between the second and third striae, and the coxendix
type, having no trace of these depressions, that there can be but
little doubt that they all form a single subgeneric group, as main-

MEMOIRS ON THE COLEOPTERA

tained by European systematists. The three species mentioned,
instead of having the large flat depressions, have smaller and un-
depressed but more metallic spots in the same positions with regard
to the dorsal punctures, and the more regular striation and coarser
strial punctures of these species are more remindful of the coxendix
than the litorale section of the subgenus, where they have been
placed.

The exposition of the remarkable structural characters of the
litorale section, recently given with clearness and general accuracy
by Mr. H. C. Fall (Tr. Am. Ent. Soc., 1910, p. 94), renders it un-
necessary to draw up a special table of the subgenus at the present
time, and the few new forms described below can without uncer-
tainty be interpolated in the tables of Fall and Hay ward.

The two following species have a submedian lateral thoracic seta
and a long truncate mentum tooth, these characters being as in
laciistre Lee.

Bembidion opaciceps n. sp. — Body narrower and rather more convex
than in laciistre, black, the upper surface with dark cupreo-aeneous lustre;
legs black, the femora pale basally; antennae black, the basal joint pale
on its under surface, more than half as long as the body, the medial
joints more than three times as long as wide; head small, barely over
two-thirds as wide as the prothorax, opaque, the eyes very large as usual;
prothorax a third wider than long, throughout nearly as in laciistre;
elytra nearly two-thirds longer than wide, one-half wider than the pro-
thorax, gradually narrowed and not broadly rounded apically, the striae
fine and finely punctate, very irregular; surface shining, broadly dull
laterally and at tip, with a sublateral and more convex elongate polished
spot at two-thirds, between the sixth and seventh striae. Length 4.7
mm.; width 1.8 mm. California. Levette collection.

Distinguishable from lacustre as stated above, and by its notably
smaller head, less abbreviated prothorax and more strongly arcuate
apex of the elytra, the striae of which are more irregular, being much
broken up in part. From litorale it differs in the elongate mentum
tooth, the latter in its more elongate developments in the present
group, being at the same time much more convex than in the abbre-
viated forms, such as litorale, the convexity extending through the
median parts of the mentum behind it. Mr. Fall correctly states
that in litorale the mentum tooth is short and truncate, but he de-
fines it as having no lateral thoracic seta; in my single example,
received many years ago from Desbrochers des Loges, there is a

BEMBIDIIKME 9

medial lateral seta well developed ; the prothorax is about a fourth
wider than long; in lacustre it is not quite one-half wider than long.

Bembidion levettei n. sp. — Body larger and more broadly oblong-oval
than in lacustre, black, dull bronze above; legs black, the femora palles-
cent basally; antennae black throughout, nearly as in lacustre: head as
in the latter and similarly developed, fully three-fourths as wide as the
prothorax, moderately alutaceous; prothorax between a third and fourth
wider than long, otherwise nearly as in lacustre, except that the sides are
more broadly rounded and less prominently so medially; elytra parallel,
somewhat over one-half longer than wide, rather more than one-half
wider than the prothorax, very obtusely rounded at tip, the fine striae
finely punctate, the third and fourth similarly sinuate subbasally; cha-
grined parts not greenish as in lacustre, but of the same bronze tint as
the rest of the surface, the latter dull, somewhat shining along the third
interval and the fourth basally and behind the middle, the latter area
extending obliquely to the seventh stria. Length (cf ) 5-9 mm.; width
2.4 mm. Colorado. Levette collection.

The large size, still broader form and longer, relatively narrower
prothorax, will readily serve to distinguish this species from lacus-
tre, of which I have a typical representative taken by Wickham at
Bayfield, Wisconsin.

There is at hand another example, labeled "Cal.," which belongs
near lacustre, but with the elytral striae along the median part of
each elytron much contorted and broken as in opaciceps and with
similarly opaque head, but the latter is somewhat larger than in
opaciceps though not quite so large as in lacustre, and the shorter,
broader elytra are very obtusely lobed at apex as in the latter; the
prothorax is narrower and less transverse. I have placed this
specimen with the type of opaciceps for the present.

The following species belongs near hesperium Fall, but is broader
and more convex:*

Bembidion binarium n. sp. — Oblong-oval, convex, polished throughout,
black, the upper surface bright aeneous, the head bluish, the elytra vio-
laceous suturally ; legs piceous, the femora testaceous, black distally, the
antennae long and slender, black, with the basal joint pale beneath, the
mentum tooth short and sinuato-truncate; head scarcely at all alutace-
ous, nearly three-fourths as wide as the prothorax, the latter two-fifths
wider than long, slightly wider at base than apex, widest at the middle,
with evenly rounded sides, deeply sinuate toward the very acute and
everted basal angles; surface polished, convex, without trace of medio-

* The name hesperium —not correctly hesperum as written by the author, or by the
present writer in the case of Callidium hesperum — comes very near to being preoccu-
pied by hesperus Cr., a species inhabiting the Azores.

io MEMOIRS ON THE COLEOPTERA

lateral seta, the median groove deep, not attaining the apex; basal foveae
elongate, deep, the angles finely but distinctly carinate; elytra one-half
longer than wide and one-half wider than the prothorax, rather widest
near basal third, oblong, rounded in rapidly at the sides basally, obtuse
at apex, with nearly straight sides medially, polished throughout, the
striae but slightly irregular, the inner four rather finely, the outer four
very coarsely punctate, becoming finely so posteriorly; third interval
much the widest, the metallic green areas unimpressed, though deeply
so at and behind the dorsal foveae; suture deeply impressed behind the
scutellum in the type. Length (cf) 5.0 mm.; width 2.3 mm. Cali-
fornia. Levette collection.

The male type of this species, when compared with the same sex
of hesperium, can be observed readily to be larger, very much stouter
and more convex, more uniform in coloration, with longer, rather
more distinct thoracic carinse and broader, more convex, subbasally
inflated elytra, on which the punctures of the outer striae basally are
still coarser. The two basal joints of the male anterior tarsi are
similarly acutely prolonged at apex internally, but both joints are
larger and more elongate in binarium than in hesperium. Of the
latter I have a typical specimen from Washington State and four
which I took in Humboldt Co., California; it is the most brightly
colored species of the subgenus. j|gj

Punctatostriatum belongs really with the coxendix section of this
subgenus, the long mentum-tooth being nearly similar to that of
confusum Hayw., but each of the dorsal punctures has an attendant
small unimpressed metallic-green spot, seeming at first glance to
affiliate it with the litorale section.

The species of the coxendix section are rather numerous, a brief
index table of those at hand being expressible as follows. I do not
have carinatum or bowditchi, of LeConte, or cenulum Hayw., at
present:

Pronotum without trace of medio-lateral seta; mentum tooth rather small,

triangular and acute unicum nov.

Pronotum with a distinct medio-lateral seta 2

2 — Mentum tooth long, convex, feebly tapering, with truncate apex. . .3

Mentum tooth very moderate in size, triangular 4

3 — Strial punctures rounded as usual; body black, with metallic under
surface, the upper bright aeneous, the elytra in great part testaceous,
convex, the striae more or less metallic green; legs testaceous

throughout confusum Hayw.

A — General structure and coloration as in confusum but larger, more
elongate and somewhat more convex, the prothorax still less ab-

BEMBIDIIN^E 1 1

breviated, being only about a fourth wider than long; elytral
intervals differing in being very convex throughout, especially
toward base, the similarly green punctures rather coarser. Length

(9 ) 6.2 mm.; width 2.5mm. Ohio aeneorubrum n. subsp.

B — General structure and coloration throughout as in confiisnm and
the preceding, but shorter and relatively broader, not so convex
as the preceding; head and eyes relatively still larger; prothorax
but little wider than the head, two-fifths wider than long; elytra
relatively much broader, not quite one-half longer than wide and
fully one-half wider than the prothorax, differing also in being
somewhat broadened basally; punctures and feebly convex inter-
vals as in confusiim. Length (9) 6.0 mm.; width 2.6 mm.

Michigan (Marquette), — Sherman marquettense n. subsp.

Strial punctures very coarse and so closely crowded as to be transverse
in form; body deep black, not metallic above, greenish beneath; in-
tervals laterally not so wide as the striae sculpturatum Mots.

4 — Elytral striae fine, very finely punctate; body very stout and convex,
obscure aeneous above, black beneath, the legs in great part dark

rufous robusticolle Hayw.

Elytral striae coarse and strongly punctate; body less stout and not so

convex; legs testaceous, with blackish femora 5

5 — Prothorax notably short and transverse venator nov.

Prothorax much less transverse 6

6 — Elytral striae deeply impressed at apex snowi nov.

Elytral striae shallow at apex 7

7 — Elytra somewhat inflated basally; side margins of the prothorax dis-
tinctly reflexed from base to apex coxendix Say

Elytra parallel; side margins of the prothorax not reflexed apically; size
smaller, the outline narrower vigilans nov.

The tvvo forms noted above under confusum (nitidulum Dej.) dif-
fer a good deal in appearance from that species, but in view of the
general similarity in structure and coloration, and in the peculiar
long truncate and feebly tapering or subparallel tooth of the mentum,
had better appear as subspecies, for the present at least. The
elytral intervals in confusum are nearly flat, but in the male become
somewhat convex, as shown by my series from Indiana and Iowa;
the great convexity of the intervals in aneorubrum is a striking
feature and, with the longer prothorax, engages the attention at
once. The relatively wider head and narrower though transverse
prothorax and broad elytra, are distinctive features of marquettense.

Of coxendix I have representatives from St. Louis and from Keo-
kuk, Iowa; its dimensions are 4.8-6.0 by 2.0-2.4 mm- The elytral
intervals vary from nearly flat to moderately convex, more strongly
laterad in the latter case; it is of a bright bronze above, sometimes
with narrow green side margins.

12 MEMOIRS ON THE COLEOPTERA

Bembidion unicum n. sp. — Oblong-oval, moderately convex, narrower
than coxendix, shining though just visibly alutaceous thoughout the en-
tire upper surface, bright bronze, black with green lustre beneath; femora
testaceous basally; antennae long, slender, blackish, the basal joint tes-
taceous, the next three more or less broadly testaceous basally; head
large, fully four-fifths as wide as the prothorax, the latter two-fifths
wider than long, with equal base and apex, the sides broadly rounded,
converging and sinuate toward the rather prominent basal angles, trans-
verse subbasal impression strong, the fovese deep, simple, oblique, the
carina fine but distinct; median stria rather fine; side margins distinctly
reflexed throughout; elytra one-half longer than wide, two-fifths wider
than the prothorax, the dorsal foveae attached to the third stria, the first
at the middle, the second at apical fourth; intervals nearly flat; punctures
of the eighth stria very fine and feeble. Length (9) 4.8 mm.; width
1.8 mm. Texas (Laredo).

It is interesting to note species of the coxendix series having no
trace of the medio-lateral thoracic seta, and this is confirmatory of
their affinities as expressed above; the puncture is as thoroughly
obsolete as in any of the litorale series.

Bembidion venator n. sp. — Oblong, very moderately convex, shining,
black, the upper surface bright aeneous, the head and pronotum sometimes
greenish or bluish, metallic greenish beneath; femora pale at tip and
broadly toward base, the dark part with metallic lustre; antennae slen-
der, colored as in unicum but rather shorter than usual; head large, three-
fourths as wide as the prothorax, with the usual very large eyes of the
group; prothorax fully three-fifths wider than long; base and apex
equally wide, the surface and general outline much as in coxendix, but
with deeper subbasal sinuation at the sides, the basal angles very acute,
everted and prominent; elytra slightly more elongate than in coxendix,
oblong, not very obtusely rounded at apex, more than one-half longer
than wide and about two-fifths wider than the prothorax, striate and
punctate as in coxendix but more coarsely. Length (cf 9 ) 5.7-6.2 mm.;
width 2.0-2.3 rnm. Texas (El Paso), — Dunn.

This species is allied rather closely to coxendix, but may be dis-
tinguished by its broader, more transverse prothorax, with more
prominent and acute basal angles, relatively more elongate and
more coarsely sculptured elytra and several other less marked char-
acters. The single male at hand has the elytral intervals somewhat
sloping inwardly from outer to inner stria, a feature not observable
in any one of the four females. The tarsal characters are of the
usual type.

Bembidion snowi n. sp. — Elongate-oval, rather narrow and convex,
shining, obscure bronze above, greenish-metallic beneath, the legs some-
what as in the preceding but more nearly testaceous, the antennae long,

BEMBIDIIISLE 13

more than half as long as the body, the third joint three-fourths longer
than the second and longer than any of the following, colored as in cox-
endix; head very large, fully four-fifths as wide as the prothorax, the latter
nearly one-half wider than long; base and apex equally wide, the surface
nearly as in coxendix, but with very feebly arcuate sides, the posterior
sinuation broad, moderate, the angles more than right, although very
sharply pointed as usual; elytra oblong-oval, convex, one-half longer
than wide, two-fifths wider than the prothorax, rounding behind in fully
apical third; striae coarse and coarsely, closely punctate, the eighth less
strongly than the seventh; punctures somewhat transverse, especially
in the sublateral striae; intervals convex, the third with the dorsal foveae
close to the third stria, at the middle and at apical fourth. Length (cf )
4.7 mm.; width 1.7 mm. Kansas. Prof. Snow.

One of the smallest, narrowest and more convex species of the
subgenus, with strong elytral sculpture and more convex intervals.

Bembidion vigilans n. sp. — Smaller than coxendix and relatively nar-
rower, bright bronze above, metallic green beneath, the legs and anten-
nae as in that species; head (cf1) five-sixths as wide as the prothorax, the
latter equally wide at base and apex, fully one-half wider than long,
throughout nearly as in coxendix, except that the reflexed lateral margin
almost disappears apically; elytra three-fifths longer than wide, two-
fifths wider than the prothorax, parallel, the sides gradually rounding
basally and at apex; striae rather coarse but not much impressed, coarsely,
not very closely punctate, the punctures of the eighth subsimilar to those
of the seventh; intervals somewhat convex, the dorsal foveae as in cox-
endix. Length (cf1 9 ) 4.5-5.4 mm.; width 1.6-2.0 mm. Two exam-
ples, unlabeled in the Levette collection and probably from Indiana.

This species, while allied to coxendix, can be distinguished readily
by the smaller average size, narrower form, parallel and not basally
subinflated elytra, slightly shorter prothorax and in having the
punctures of the eighth stria nearly similar to those of the seventh.
In coxendix the punctures of the eighth stria are very much feebler.

Group II — bifossulatum
Subgenus Ochthedromus Lee.

The closest approach to this group in the European fauna is that
represented by bipunctatum Linn., named Testedium by Motschul-
sky, and there the impressed dorsal punctures are as large and con-
spicuous as in bifossulatum. The European forms are, however,
very much smaller than the American, and differ greatly in the
nature of the eighth elytral stria and in the rounded humeri. The
eighth stria in bipunctatum is deep, impunctate and near the sides.

14 MEMOIRS ON THE COLEOPTERA

exactly as in the ustidatum group, while in bifossulatum it is punc-
tulate, feebly impressed, distant from the margin and subsimilar to
the seventh stria; it also differs in the position of the dorsal punc-
tures, the anterior being at about the middle, while in bipunctatum
it is at basal third or fourth. The mentum tooth in bifossulatum
is elongate, tapering and truncate at apex; it sometimes becomes
shorter and more broadly truncate however, as in cheyennense and
nuperum. We have seven rather distinctly characterized species
as follows:

Mentum tooth tapering, truncate or broadly rounded at tip, where the
tooth is always very much narrower than the width of the mental
recess at each side of it, the sides of the mental sinus more diverg-
ing 2

Mentum tooth rather broad, more convex, subparallel, the very wide
truncate apex not narrower than the mental recess at each side,
the sides of the mental sinus' subparallel and arcuate 4

2 — Larger species; western regions of the continent beyond the Rocky
Mountains. Oblong, moderately convex, alutaceous, black, bright
bronze above, dark metallic green beneath; legs and antennae black
throughout, the latter long and slender; head four- fifths as wide as
the prothorax, with very prominent eyes; prothorax fully one-half
wider than long, evidently narrower at base than apex, the sides
inflated, rounded, oblique and broadly, feebly sinuate basally to the
basal angles, which are broadly obtuse but with sharp prominent
apex; stria moderate, the basal impression broad, distinct, the fovese
large, shallow and rugose; carinae obsolete; elytra oblong, parallel,
rapidly rounding at base, obtuse at apex, fully one^half longer than
wide, not quite one-half wider than the prothorax, the striae rather
fine; punctures small, a little larger laterally, those of the eighth stria
fine but evident; surface more densely alutaceous toward the sides.
Length (cf 9 ) 5-7~7-O mm.; width 2.0-2.75 mm. Pacific coast
from Los Angeles to Kamloops, British Columbia and eastward to
Marysvale, Utah. Rather abundant bifossulatum Lee.

Smaller species, inhabiting the eastern parts of the continent 3

3- — Body oblong, moderately convex, shining, especially in the male as
usual in this group, black, bronzed above, obscure metallic-green-
ish beneath; legs obscure rufous, the femora in great part blackish,
with metallic lustre; antennae black, obscure rufous at base, long
and slender, the outer joints much more than twice as long as wide;
head fully three-fourths as wide as the prothorax, the eyes very
large and prominent; prothorax fully three-fifths wider than long,
evidently narrower at base than apex, widest at the middle, the
sides evenly rounded, oblique basally, becoming parallel for a very
short distance before the angles, which are right; surface nearly as
in the preceding, the impressions large, shallow and rugose, the
carina obsolete; elytra oblong, parallel, two-fifths or more wider
than the prothorax, broader in the female; striae moderate, not

BEMBIDIIN^E 15

coarsely punctate, the eighth finer than the seventh and with very
fine punctures; dorsal foveae just before the middle and at apical
third to fourth. Length (cf 9 ) 5.0-5.3 mm.; width 1.8-2.1 mm.
Indiana, Iowa and Kansas americanum Dej.

Body stouter, oblong, slightly convex, alutaceous, greenish-aeneous above,
the under surface and legs as in americanum; antennae similar in
coloration and length but notably more slender, the ninth joint
three times as long as wide; head large, with very large prominent
eyes, four-fifths as wide as the prothorax, which is fully two-thirds
wider than long, with rounded sides, becoming oblique and nearly
straight posteriorly, the angles obtuse, with their apices minutely
sharp and prominent; surface nearly as in the preceding; elytra ob-
long, parallel, very obtusely rounded at tip, less than one-half longer
than wide, two-fifths wider than the prothorax, the striae fine and
scarcely impressed, with moderate, distinct and well separated
punctures, the eighth fine and finely punctate; foveae not so large
as in bifossulatum, just before the middle and at apical fourth.
Length (9) 5-6 mm.; width 2.3 mm. Iowa (Keokuk) . .illini n. sp.

4 — Oblique sides of the prothorax basally nearly straight, the angles
very obtuse, with their apices sharply prominent; outer antennal
joints sensibly abbreviated, the tenth barely twice as long as wide.
Body almost as in bifossulatum in size and habitus, elongate-oblong,
rather strongly convex, shining, alutaceous anteriorly and feebly
laterad on the elytra; upper surface very obscure bronze, the under
dark metallic green; legs obscure rufous, the femora black and met-
allic, pale basally; antennae extending a little beyond the middle,
not very slender, black, the basal joint rufous beneath; head large,
with very prominent eyes, four-fifths as wide as the prothorax, the
latter nearly as in bifossulatum; elytra as in that species but not
quite so long and with the third and fourth intervals wider than the
others, the outer striae rather more strongly punctured and more
impressed, with convex intervals; eighth very fine and feeble and
feebly punctate. Length (c?) 7.0 mm.; width 2.65 mm. Califor-
nia (exact locality unknown) sufflatum n. sp.

Oblique sides becoming sinuate before the basal angles, which are right,
sharp and very prominent, the sides of the base anteriorly oblique
as usual 5

5 — Prothorax very short, fully three-fifths to three-fourths wider than
long. Body oblong, very moderately convex, dull and alutaceous
(9), more shining (cf), bronze above, obscure metallic-greenish
beneath; legs and antennae colored as in sufflatum, the latter more
elongate; head similar; prothorax similar but notably shorter and
more transverse; elytra oblong, parallel, subcircularly rounded be-
hind, fully one-half longer than wide, two-fifths wider than the pro-
thorax; striae fine and finely, closely punctate, nowhere distinctly
impressed, the eighth fine but rather deep, scarcely visibly punctu-
late; intervals equal as usual, nearly flat; foveae large and deep, a
little before the middle and at apical fourth. Length (cf 9 ) 5.8-
6.5 mm.; width 2.2-2.5 mm- Wyoming (Cheyenne), — Wickham.

cheyennense n. sp.

16 MEMOIRS ON THE COLEOPTERA

Prothorax less abbreviated 6

6 — Form elongate, moderately convex, shining, the alutaceous areas as
usual; upper surface bright bronze, dull green beneath; legs nearly
black throughout; antennae long, very slender, the outer joints about
three times as long as thick; head as usual, more than four-fifths
as wide as the prothorax, the latter as in bifossulatum but slightly
less transverse and with the oblique sides more deeply sinuate be-
fore the angles, barely more than one-half wider than long; elytra
throughout nearly as in bifossulatum, the eighth stria similarly fine,
scarcely at all impressed and finely but distinctly punctate. Length
(cf) 6.8 mm.; width 2.7 mm. Unlabeled in the Levette collection

and probably taken in Colorado regestum n. sp.

Form broader and less elongate than in any other species, rather de-
pressed, shining, feebly alutaceous anteriorly, bright bronze above,
greenish beneath, the legs piceous-black, the coxae pale; antennas
long and slender, the tenth joint between two and three times as
long as wide, black, the basal joint very faintly rufescent beneath;
prothorax as in the preceding but shorter, nearly three-fifths wider
than long; elytra much shorter than in any other species, oblong,
parallel, broadly rounded at apex, the latter faintly lobed in the
middle as usual, two-fifths longer than wide and three-sevenths
wider than the prothorax, striate and finely punctate as in the pre-
ceding, but with the eighth stria more nearly as in cheyennense,
very fine but deep and groove-like and not perceptibly punctate
under the hand lens. Length (a71) 5.5 mm.; width 2.3 mm. A
single unlabeled example from the Levette collection, almost un-
doubtedly taken in Colorado nuperum n. sp.

The male seems to be more abundant than the female in this
group. The species regestum and sufflatum so closely resemble bi-
fossulatum, that they would inevitably be intermingled in most col-
lections, and the radical differences in the mentum tooth was a
very surprising discovery, showing how closely distinct species may
sometimes resemble each other to superficial view.

In the type of sufflatum there are three very large deep equal dor-
sal foveae on the left elytron, occupying the same space as the usual
two foveae, the intermediate near the second stria, and not subaxially
placed on the third stria, which is the invariable rule in this group,
but, on the right elytron, there is no trace of any except the two
regular foveae. The middle fovea on the left elytron would appear
to be unquestionably adventitious and without special significance
of any kind.

The only specimen of bifossulatum which I took at Duncan's
Mills, Sonoma Co., is of a dull deep black throughout above, though
normal beneath, and the dense opacity outside of the fourth stria

BEMBIDIIN/E 17

is rather abruptly defined and conspicuous. Dull black specimens
also occur among those normally having metalic lustre in the lit-
orale group, and I particularly note two of lorquini among a good
series also taken at Duncan's Mills. It is difficult to understand
the reason for this pronounced melanism, which has the nature of
dimorphism, as there do not seem to be any intermediates.

The species allied to honest um, placed in this group by Mr. Hay-
ward, will be found further on in the ustulatum group.

Group III — nitidum

9

Subgenus Eudromus Kirby

Pogonidhtni Gangl.

Our species described under the names nitidum by Kirby and
obliqulum* (Bemb. aptuni) by LeConte, are congeneric in every way
with the European laticolle Duft. ; the above subgeneric name was
proposed for nitidum, and so Pogonidium Gangl., must be regarded
as a synonym. In laticolle the sides of the prothorax are much
more sinuate at base and the elytral striae laterad somewhat more
evident, but in all other characters, including habitus, there is com-
plete concordance; laticolle has a metallic-blue coloration, while our
species are polished black; the strial punctures are very fine in both
and the dorsal punctures are on the third interval and very small.
The mentum tooth is rather short and wide and broadly sinuato-
truncate at apex. The head is notably small, in marked contrast
with the preceding groups. Obliqulum is considered a slight vari-
ety of nitidum by Horn and Haywrard, but the twro are fully distinct
and in no way very closely allied. Of nitidum I obtained three
specimens at Duluth and have a large series of obliqulum from var-
ious parts of California; there is no marked variability to be ob-
served and I strongly doubt that any true intermediates exist; if
so they are specifically distinct from either.

* The spelling "obliqiiulum" was employed by LeConte for this species, as well as
some others, such as Teretrius obi., and this spelling is generally repeated in the lists;
it seems to the writer, however, that the second u is superfluous and that the form
obliqulum would be better.

T. L. Casey, Mem. Col. VIII, Oct. 1918.

1 8 MEMOIRS ON THE COLEOPTERA

Group IV — Icevigatum
Subgenus Hydrium Lee.

The sole representative of this group is the large polished, steel-
blue species described by Say under the above name. It is pecu-
liar among all other species of the genus known to me in two par-
ticulars. First, the form of the mentum tooth, which is short,
broad and truly bidentate, the incisure between the lobes being
deep and angulate. In all the other instances of a bidentate tooth
which have been recorded, the apex is simply sinua to-truncate,
the sides of the truncature being slightly prominent. The second
special character of the group is the complete absence of the usual
dorsal setigerous punctures or foveae, two or three in number in
nearly all other species of the genus; here, the absence of these tac-
tile setae is compensated by numerous setigerous punctures along
all the intervals, widely spaced in one or two rather uneven series.
The head is small, as in the nitidum group. LeConte had rather
plausible grounds for considering lamgatum to be a distinct genus
of the Bembidiinse, and it is not at all certain that this view may
not be correct.

Group V — erasum
Subgenus Lionepha nov.

The type species of this group, which is really rather closely allied
to the ustulatum group, was placed with nitidum by Hayward, but
does not belong there on account of the obtuse humeri and general
habitus, but is much more closely allied to iridescens and a number
of other species assigned to the planatum group by that author.
The species are very numerous and rather troublesome to the sys-
tematist, because of the slight amount of structural diversity. The
body is always at least moderately convex and polished in great
part, with impunctate or excessively minutely punctate, striae,
which are generally obsolete externally, or, if present, very much
finer there than toward the suture. The dorsal foveae, always two
in number, are partially on the third interval but closely adherent to
the third stria and confluent therewith; they are generally said to
be on the third stria and vary from small to notably large in size.
The mentum tooth is well developed, broadly triangular and never
truncate at tip so far as observed; it is diversified so slightly as to

BEMBIDIIN^E 19

have scarcely any value in classification. The head and eyes are
moderate in size as a rule, when compared with the first two groups.
The carina at the sides of the thoracic base is always long, strong and
conspicuous; so this feature will seldom be alluded to in the descrip-
tions. The species are very numerous but only very few of them
have been described; those at hand may be defined as follows, they
being assignable to three distinctly circumscribed sections:

Striae of the elytra with extremely fine punctuation, the dorsal foveae
small; body black, highly polished, the legs black or piceous, the
hind body never much inflated; thoracic impressions very deep and
conspicuous; antennae rather thick as a rule; species occurring in
damp moss. Section LIONEPHA in sp 2

Striae without discernible punctuation; body oblong, the prothorax gen-
erally very short and transverse, broadly reflexed at the sides, the
basal impressions large and shallow, the carinae very long, conspicu-
ous; hind body oblong, never so much as one-half wider than the
prothorax; dorsal foveae large, conspicuous and impressed; upper
surface very moderately convex; legs, antennae and palpi black.
Section PLATAPHUS Mots.(?) n

Striae similarly impunctate; body more or less ventricose; prothorax very
moderately transverse, subcordiform, the sides strongly sinuate
basally as a rule, the basal impressions large and deep, the elytra in-
flated, oval, frequently pale in color or opalescent, the dorsal punc-
tures large but less so and less impressed than in the preceding sec-
tion; general habitus somewhat as in Trechus. Section TRECHO-
NEPHA nov 17

2 — Striae wholly obsolete, on the disk externally, visible and moderately
impressed toward the suture; upper surface notably convex; body
deep black, polished, the legs black to rufous 3

Striae visible throughout nearly the entire width, but little more impressed
suturally; upper surface much more depressed, about as much so
as in the planatum group 10

3 — Sides of the prothorax broadly though evidently sinuate basally; eyes
very moderate in size 4

Sides oblique, but never more than very faintly sinuate basally; size
smaller 6

4 — Antennae notably slender. Body elongate-oval, convex; head three-
fourths as wide as the prothorax, the sulci deep, extending behind
the middle of the eyes; prothorax a third wider than long, the base
slightly wider than the apex; subbasal impression evident, entire,
the stria entire, moderate; basal foveae very deep; surface punctu-
late at base; sides distinctly reflexed, broadly rounded, converging
and broadly sinuate basally, the angles right; elytra oblong-oval,
nearly one-half longer than wide, two-fifths wider than the prothorax;
sutural stria rather deep, the next two feeble; anterior fovea at basal
fourth, the other at three-fifths; surface with a small discal punc-
ture very near the apex; hind tarsi slender, the first joint as long as

2o MEMOIRS ox THE COLEOPTERA

the next two combined. Length (9 ) 4.8 mm.; width 1.9 mm. Cal-
ifornia (exact locality unknown but probably from the coast regions
south of San Francisco) osculans n. sp.

Antennae distinctly thick, as usual in the first section 5

5 — Prothorax less than a third wider than long, distinctly wider at base
than apex. Body elongate-oval, convex, polished, black; head fully
three-fourths as wide as the prothorax and as wide as an elytron,
the parallel sulci deep and abrupt; prothorax nearly as in the pre-
ceding, except that the median stria does not attain the apex; elytra
oblong-oval, nearly as in osculans but narrower, with all the striae
outside of the second obsolete or nearly so, and the subapical punc-
ture extremely minute and feeble; anterior fovea behind basal fourth,
the second at two-thirds. Male with the basal joint of the anterior
tarsi very large, convex, barely longer than wide — the usual type in
this section. Length (cf 9 ) 4.0-4.5 mm.; width 1.5-1.8 mm. Cal-
ifornia (Truckee). Oregon, — LeConte. Five specimens.

erasum Lee.

Prothorax fully two-fifths wider than long, barely observably wider at
base than apex. Body much larger and broader, similarly polished
and deep black; head three-fourths as wide as the prothorax, the
sulci deep and abrupt, the superciliary fovea large and deep; an-
tennae notably thick, rather long, four-fifths as long as the elytra,
black as usual, but with the first joint rufous beneath, the second
joint three-fourths as long as the third, the tenth twice as long as
wide; prothorax in form and surface nearly as in osculans but
broader and more transverse; elytra nearly as in that species in
form and striation but broader, also less convex internally. Length
(9) 5-3 mm.; width 2.1 mm. California (Marin Co.).

speculum n. sp.

6 — Antennae slender basally, becoming rather rapidly thick distally, the
tenth joint less than twice as long as wide and fully one-half thicker
than the second, the latter fully three-fourths as long as the third.
Body oblong-oval, rather convex, deep black, polished, with feeble
subcupreous lustre, the legs dark piceous, the antennae black through-
out and as long as the elytra; palpi black as usual; head three-fourths
as wide as the prothorax, the latter rather small, but little more than
a fourth wider than long, the foveae deep, lineate at the bottom, the
median stria distinct, entire; disk widest before the middle, the
sides broadly rounded, oblique and nearly straight in almost basal
half, distinctly reflexed; base slightly wider than the apex; elytra
oblong-oval, not quite one-half longer than wide, about one-half
wider than the prothorax, evenly rounded behind in fully apical
third; first two striae rather deeply, subequally impressed, the others
faint, rapidly becoming obsolete externally, the fovea? before basal
third and at three-fifths; subapical puncture very minute. Length
(9 ) 3-2 mm.; width 1.35 mm. California (Sta. Cruz Mts.).

castum n. sp.

Antennae nearly filiform or at most very gradually thinner to the second
joint .... 7

7 — Hind body more inflated, nearly one-half wider than the prothorax, a

BEMBIDIINJE 21

little less in the male. Black, polished, the legs rufous; antennae
deep black, thick, much shorter than the elytra, the medial joints
distinctly less than twice as long as wide; palpi black; head well de-
veloped, three-fourths as wide as the prothorax, the latter nearly
one-half wider than long, just visibly wider at base than apex,
widest before the middle, the sides moderately oblique posteriorly;
stria distinct, subentire, the transverse subbasal impression sub-
obsolete medially, with small scattered punctures, the foveae large
and deep; side margins narrowly reflexed; elytra oblong-oval, rather
less than one-half longer than wide, the sutural stria deep, the others
finer, diminishing outwardly; dorsal foveae before one-third and at
three-fifths. Length (cf 9 ) 3-2-3-5 mm.; width 1.25-1.4 mm.
California (Arcata and Hoopa Valley, Humboldt Co.).

serenum n. sp.

Hind body less inflated, not more than about a third wider than the pro-
thorax

8 — Antennae less thick than usual and more elongate, the medial joints
fully twice as long as wide. Body oblong-oval, moderately convex,
highly polished, black, sometimes with slight aeneous lustre; legs
piceous-black; antennae black, only slightly shorter than the elytra
(d"), or distinctly (9); head moderate in size, fully two-thirds as
wide as the prothorax, which is not quite one-half wider than long,
nearly as in the preceding, the basal angles more than right but very
sharp, not at all prominent; elytra not quite one-half longer than
wide, oblong, not very obtusely rounded behind, the striae very fine
and shallow internally, obsolete externally, the sutural not deeper
than the second. Length (i cf, 4 9) 3.6-3.8 mm.; width 1.35-
1.55 mm. California (Truckee and Lake Tahoe).. . .lascivum n. sp.

Antennae decidedly thick, the medial joints generally less than twice as
long as wide 9

9 — Head small, distinctly narrower than an elytron; color and lustre
nearly as in the preceding throughout; body shorter, relatively
broader and smaller in size; antennae two-thirds as long as the ely-
tra; head scarcely two-thirds as wide as the prothorax, the latter
short and transverse, fully one-half wider than long, the base slightly
wider than the apex, as usual in this section, its general conforma-
tion and the deep basal foveae as in the preceding; elytra two-fifths
to nearly one-half longer than wide, oblong-oval, subcircularly
rounded behind, the striation as in lascivum, the small dorsal foveae
before basal third and at two-thirds. Length (c? 9 ) 3-°-3-4 mm-:
width 1.3-1.45 mm. California (Truckee and Lake Tahoe). Thir-
teen examples, indicating scarcely any variability.. . .lubricum n. sp.

Head similarly small, the body rather convex, similar in color and in the
very polished lustre throughout; head fully three-fourths as wide
as the prothorax, with deep narrow sulci and moderate eyes; an-
tennae thick, filiform, two-thirds as long as the elytra; prothorax
rather more than one-half wider than long, the base and apex equal,
widest before the middle and with distinctly and evenly rounded
sides, oblique and feebly sinuate basally; stria ending at the feeble
anterior impression and lost in the scattered punctures of the base;

22 MEMOIRS ON THE COLEOPTERA

foveae very deep, moderate in size, lineate at the bottom, close to
the rather short carina as usual in this section; basal angles slightly
obtuse but very sharp; elytra not quite one-half longer than wide,
two-fifths wider than the prothorax, gradually rounding behind,
with distinctly arcuate sides; first two striae evident but feebly im-
pressed, the external all obsolete, the small foveae at apical, and
before basal, third. Length (9) 3.2-3.5 mm.; width 1.2-1.45 mm.
British Columbia (Metlakatla), — Keen. Three specimens.

brumale n. sp.

Head similarly small, form more elongate, the color and lustre similar;
legs deep black; antennae black, three-fourths as long as the elytra,
the medial joints two-thirds longer than wide, not quite as thick as
in vacivum; palpi deep black; head three-fourths as wide as the pro-
thorax, the eyes very moderate; prothorax two-fifths wider than
long, in general configuration and character as in the preceding, but
with the oblique sides straight; elytra fully one-half longer than
wide, strongly rounded behind, parallel, with rather distinctly arcu-
ate sides; four or five striae visible, the outer very faint, the sutural
distinctly impressed; small dorsal foveae near basal fourth and apical
third, confluent with the third stria as usual. Length (cf 9 ) 3-6-
3.9 mm.; width 1.3-1.5 mm. Colorado (Boulder Co.). Eleven
examples probatum n. sp.

Head well developed, about equal in width to an elytron. Form nar-
row and elongate, colored and with polished lustre as in all the
preceding species, the legs piceous-bl'ack; antennae (cf) very thick,
filiform, three-fourths as long as the elytra, the medial joints
barely over one-half longer than wide, deep black throughout, the
palpi black as usual; head nearly four-fifths as wide as the prothorax,
the eyes very moderate, the sulci sharply excavated; prothorax
about two-fifths wider than long, in general conformation as in the
preceding species, the carinae only moderate in length; elytra oblong-
oval, strongly rounded behind, more than one-half longer than wide,
widest rather behind the middle, the sides broadly arcuate as usual;
striae distinct toward the suture, the sutural not very deep, the small
foveae rather distinct from the third stria, at basal and apical
third. Length (cf) 3.65 mm.; width 1.35 mm. British Columbia
(Skeena River at Terrace), — Keen vacivum n. sp.

10 — Head moderate, scarcely as wide as an elytron; body oblong, deep
black and highly polished; legs black, the coxae piceous; antennae
deep black throughout, rather short, three-fourths as long as the
elytra, the medial joints not quite twice as long as wide; palpi mod-
erate, deep black; head three-fourths as wide as the prothorax, the
latter about one-half wider than long, just visibly wider at base
than apex, the sides very broadly rounded from apex to the slightly
prominent basal angles; surface broadly convex, nearly as in the
preceding species but with the large basal foveae not quite so deep;
elytra oblong-oval, barely one-half longer than wide, not quite one-
half wider than the prothorax, rounding strongly behind in about
two-fifths; striae fine and feeble, not quite entire, barely traceable
on the flanks, the eighth deep as usual, the minute punctures of the

BEMBIDIIN/E 23

striae well separated; dorsal foveae small, before anterior and at pos-
terior third. Length (d71 9 ) 3.4-4.2 mm.; width 1.4-1.65 mm.
California (Truckee and Lake Tahoe). Ten examples.

commotum n. sp.

Head rather larger, about as wide as an elytron; antennae, palpi and ely-
tra longer, the latter oblong, parallel, with nearly straight sides,
rapidly rounding and very obtuse in about apical third; body
broader, oblong, similarly colored and lustrous, but with the legs
rufo-piceous; antennae black, slender, longer than in commotum,
four-fifths as long as the elytra, the medial joints more than twice
as long as wide; maxillary palpi black, distinctly longer than in any
other of this section; head fully three-fourths as wide as the pro-
thorax, which is one-half wider than long, widest before the middle,
the sides rather strongly rounded, oblique behind, just visibly sinu-
ate at the hind angles, which are obtuse though not rounded; sur-
face as in the preceding, the side margins distinctly reflexed; elytra
large, rather more than one-half longer than wide, two-fifths wider
than the prothorax, the strife very fine, all unimpressed, not quite
entire, the minute punctures widely separated, closer in the inner
series as usual. Length (cf ) 4.0 mm.; width 1.65 mm. California
(Placer Co.). One specimen seclusum n. sp.

II — Sides of the prothorax distinctly sinuate basally, becoming parallel
for a rather long distance before the basal angles, which are right
and very sharp. Form oblong-oval, black, polished, subaeneous,
the elytra somewhat piceous-black; legs black, the trochanters pale;
antennae slender, the second joint almost four-fifths as long as the
third, the medial joints two and one-half times as long as thick;
head nearly four-fifths as wide as the prothorax, the eyes large and
prominent, the sulci moderately abrupt and deep; prothorax one-
half wider than long; 'sides moderately inflated and evenly rounded
to the large basal sinus, the stria deep, not attaining the apex, the
foveae deeper than in others of this section, the surface between the
lineate bottom and the carina strongly rugose; elytra one-half longer
than wide, subacutely rounded in posterior two-fifths, two-fifths
wider than the prothorax, oblong-oval, parallel, the striae fine, very
feebly impressed inwardly and entire, barely traceable externally,
the foveae broadly impressed, just before the middle and behind
apical third, mutually as distant as the second is fro.ni the apex.
Length (9) 4.2 mm.; width 1.65 mm. British Columbia (Metla-
katla), — Keen blanditum n. sp.

Sides of the prothorax more or less oblique posteriorly, but never more
than broadly and feebly sinuate 12

12 — Basal angles right or extremely nearly so, very sharp, the sides of
the prothorax broadly and feebly sinuate posteriorly 13

Basal angles more or less evidently more than right, though always
sharply defined, the thoracic sides oblique basally and nearly
straight 14

13 — Form oblong-oval, shining, black, with feeble aeneous lustre, the
elytra not deep black; legs black, the coxae and trochanters paler;
antennae black, slender, not quite as long as the elytra, the medial

24 MEMOIRS ON THE COLEOPTERA

joints between two and three times as long as thick; palpi moderate;
head well developed, fully three-fourths as wide as the prothorax,
which is three-fifths wider than long, with acute though slight!}'
blunt apical angles, widest just before the middle, the sides rather
more rounded submedially; base wider than the apex and but little
narrower than the greatest width; fovese very large, rather shallow,
rugose, having a lineate sulcus at the bottom, the carina long;
elytra scarcely one-half longer than wide, two-fifths wider than the
prothorax, oblong, with arcuate sides, obtusely rounded in apical
third; striae extremely fine, barely at all impressed inwardly, scarcely
traceable externally, the large foveae at about basal and apical
third. Length (9) 4.1 mm.; width 1.8 mm. California (Placer
Co.), — Koebele saturatum n. sp.

Form oblong, less convex, polished, black, with feeble purpureo-seneous
lustre; legs black, the coxae not paler; antennae long, rather slender,
four-fifths as long as the elytra, the medial joints three times as
long as wide, the tenth barely at all shorter; palpi black, distinctly
longer than in the preceding; head moderate, three-fourths as wide
as the prothorax, which is short and very transverse, two-thirds
wider than long, with very obtuse and rather rounded apical angles,
the large unimpressed scabrous area inward from the very long
carina, having a lineiform deep impression at some distance from
the latter; base wider than the apex, the sides but slightly inflated,
subevenly rounded, feebly oblique behind; elytra oblong-oval, sub-
circularly rounded in fully apical third, one-half longer than wide,
fully a third wider than the prothorax, parallel, with broadly arcu-
ate sides; striae entire, fine but deeply impressed inwardly and very
distinct throughout the width, though feebler externally, the foveae
at basal and apical third. Length (cf) 5.2 mm.; width 2.0 mm.
California (Placer Co.). The first anterior tarsal joint is very large,
fully as long as the next three and one-half longer than wide.

laxatum n. sp.

14 — Elytra broad, oblong, with nearly straight sides, rapidly and very
obtusely rounding behind in barely apical third. Body and legs
black, the upper surface polished and more or less metallic, the
elytra dark green; head three-fourths as wide as the prothorax and
fully as wide as an elytron, the antennae black, almost as long as
the elytra, the medial joints slightly more than twice as long as
wide; palpi black, moderate in length; prothorax short, very trans-
verse, not quite three-fourths wider than long, the apical angles
obtuse and rounded, the basal nearly right and sharp; sides
broadly, moderately arcuate, slightly oblique and just visibly sinu-
ate basally; base slightly wider than the apex; surface at base rugose
and flat laterally between the long carina and a long lineiform im-
pression; side margins very broadly reflexed; elytra less than one-
half longer than wide, about a third wider than the prothorax, the
striae throughout extremely fine, feeble and unimpressed, almost
entire, barely traceable laterally, the dorsal foveae broadly im-
pressed, near two-fifths and three-fourths. Length (cf) 4-3 mm.;
width 1.9 mm. Colorado ampliatum n. sp.

BEMBIDIIN^E 25

Elytra more oblong-oval, with more arcuate sides and gradually and sub-
circularly or parabolically rounded behind in apical two-fifths.. . .15

15 — Antennae shorter, three-fourths as long as the elytra, with the medial
joints not more than twice as long as wide. Body not broadly
oblong-oval, moderately convex, black, polished, the upper surface
with faint subviolaceous lustre; head relatively large, four-fifths as
wide as the prothorax and fully as wide as an elytron, the sulci
rather shallow', the superciliary puncture moderate; palpi black,
moderate in length; prothorax short, slightly more than one-half
wider than long, widest well before the middle, the sides anteriorly
rather strongly rounded, strongly oblique and nearly straight in
almost basal half, the angles obtuse but not rounded and feebly
prominent; surface laterally at base with fine radiating regulosity,
very deeply impressed at some distance from each carina, the inter-
vening surface flat; sides broadly reflexed, the apical angles obtusely
rounded; elytra one-half longer than wide, a third wider than the
prothorax, somewhat parabolic behind, the striae very fine, suben-
tire, slightly impressed internally, obsolete externally, the large im-
pressed foveae near three-sevenths and two-thirds. Length ( 9 ) 4.2
mm.; width 1.5 mm. California (Placer Co.) lividulum n. sp.

Antennae longer, the medial joints about three times as long as wide. . . 16

16 — Habitus somewhat as in the preceding, the body not very broad,
oblong-oval, deep black, the polished upper surface without metallic
lustre; head moderate, three-fourths as wide as the prothorax and
scarcely so wide as an elytron, the sulci broad, the orbital puncture
moderate; prothorax short, more than one-half wider than long,
the sides broadly, evenly arcuate from the obtuse apical, to the
obtuse but sharp basal, angles, straight and slightly more oblique
basally; surface laterally at base finely rugose, the impression dis-
tant from the carina and only moderate in depth; median stria
coarse and deep, as in the preceding, and similarly not entire; elytra
nearly one-half longer than wide, two-fifths wider than the pro-
thorax, the apex more obtusely and circularly rounded than in
lividulum, the striation nearly similar, the large deep foveae at three-
sevenths and three-fourths. Length (cf) 4.0 mm.; width 1.6 mm.
Colorado. Levette collection .• improvisum n. sp.

Habitus very different, larger, the .body broadly oblong-oval, with much
less transverse prothorax, deep black, the upper surface obscure
viridi-aeneous, faintly greenish beneath, the entire legs deep black;
head three-fourths as wide as the prothorax, scarcely as wide as an
elytron, with broad sulci and large orbital puncture; antennae three-
fourths as long as the elytra; prothorax large, evidently less than
one-half wider than long, widest near apical third, but with broadly
rounded sides, becoming straight basally, the apical angles but
slightly blunt, the basal obtuse but sharp; base barely wider than
the apex, the sides broadly reflexed; surface laterally at base broadly
rugose, the impression distant from the long carina, broad and shal-
low; median stria not very coarse; elytra large, one-half longer than
wide, two-fifths wider than the prothorax, gradually and subpara-
bolically rounded behind, the striae fine and feebly impressed, every-

26 MEMOIRS ON THE COLEOPTERA

where distinct, entire, the large foveae near two-fifths and three-
fourths, mutually as distant as the anterior is from the base. Length
(c?) 5-3 mm.; width 2.0 mm. California (Placer Co.), — Koebele.

adumbratum n. sp.

17 — Striae more impressed toward the suture; head never wider and al-
most always narrower than the thoracic apex; eyes very moderate

in size and prominence 1 8

Striae extremely fine, equal throughout the width, not more distinct
suturally; head wider than the thoracic apex, the eyes larger and

more prominent 39

1 8 — Elytra feebly opalescent in lustre; prothorax never more than mod-
erately transverse, the habitus very much as in Trechus 19

Elytra never opalescent; prothorax generally but not always shorter and
more transverse, the hind body relatively more inflated as a rule. 27
19 — Legs dark, rufo-piceous in color. Body elongate-oval, moderately
convex, rather shining, black above and beneath, the elytra only
very faintly picescent and with barely perceptible opalescence; head
moderate, scarcely three-fourths as wide as the prothorax, the sulci
rather broadly but deeply impressed; palpi and antennae black or
nearly so, the basal joint of the latter, which are very slender and
about three-fourths as long as the elytra, piceous, the medial joints
slightly more than three times as long as wide; prothorax a fourth
wider than long, the sides broadly inflated and arcuate, becoming
nearly parallel in about basal fourth; margins distinctly reflexed;
base much wider than the apex; surface laterally at base finely
rugose almost to the middle; at some distance from the long strong
carina there is a large shallow diffuse impression; elytra about one-
half longer than wide, three-sevenths wider than the prothorax,
evenly oval, with the sides evenly arcuate, more so apically, widest
at the middle; striae fine, impressed inwardly, easily traceable to
the sides, entire, the foveae strong, just before the middle and near
apical third. Length (c?) 4.2-4.6 mm.; width 1.7-1.9 mm. Brit-
ish Columbia (Inverness),- — Keen funereum Lee.

Legs pale yellowish-testaceous throughout 20

20 — Larger species, about 5 mm. in length 21

Smaller, always distinctly less than 5 mm. in length 22

21 — Form elongate-oval, moderately convex and shining, the elytra evi-
dently opalescent, nearly black, the abdomen piceous; head rather
small, thre'e-fourths as wide as the prothorax but much narrower
than an elytron, the sulci rather wide but deep, the orbital puncture
somewhat distant from the eye; antennae long and very slender,
fully as long as the elytra, the medial joints between three and four
times as long as wide; prothorax a fourth wider than long, widest
before the middle, where the sides are well rounded, straighter api-
cally to the obtuse and rounded angles, oblique basally, becoming
sinuate only very near the angles, which are right; sides rather
widely and strongly reflexed ; base finely, sparsely punctulate, the
foveae very deep, at lateral fourth, the carina long and strong; elytra
nearly one-half wider than the prothorax, oval, fully one-half longer
than wide, the arcuate sides merging gradually into the strong apical

BEMBIDIIN.E 27

curvature; striae fine, impunctate, feebly impressed inwardly, almost
completely lost externally, the foveaa fine, at basal and apical third;
anterior tarsi ( 9 ) fully three-fourths as long as the tibiae, slender,
the basal joint as long as the next three. Length (9) 5.2 mm.;
width 2.0 mm. California (Los Angeles Co.). Mountains around
Sta. Isabel, — LeConte trechiforme Lee.

Form somewhat as in the preceding but slightly narrower, blackish-
piceous, shining, the abdomen with testaceous apex; head nearly
four-fifths as wide as the prothorax, a little narrower than an elytron,
the front depressed and flat between the sulci in the type, the orbital
puncture very near the eye; antennae slender, nearly as long as the
elytra, the medial joints about three times as long as wide, as in
the preceding fusco-testaceous, paler at base; prothorax barely a
fourth wider than long, as in the preceding, except that the oblique
sides behind are broadly and rather feebly sinuate to the angles,
which are somewhat obtuse, the apical less broadly blunt, the sides
broadly and strongly reflexed; surface nearly as in trechiforme; ely-
tra similar but not so broadly oval, less than one-half wider than the
prothorax, the striae similarly fine, very feebly impressed inwardly,
readily observable also laterally, everywhere with punctures, but
so minute as to require high power to reveal them, the foveae small,
at basal and apical third; anterior tarsi not quite so long as in trechi-
forme. Length (9 ) 4.9 mm.; width 1.8 mm. California (Redwood
Creek, Humboldt Co.). A single example fabrum n. sp.

22 — Basal angles of the prothorax distinctly more than right, very slightly
prominent and not blunt. Body elongate-oval, piceous, the elytra
paler, castaneous; abdomen pale, the rest of the under surface
darker brown, shining; head rather small, three-fourths as wide as
the prothorax, much narrower than an elytron, the sulci broad and
shallow, the juxtocular puncture large, rounded; antennae fuscous,
paler basally, very slender, not quite as long as the elytra, the medial
joints three times as long as wide; prothorax broader than in the
two preceding, evidently over a fourth wider than long, the base
wider than the apex as usual in this section; outline nearly as in
trechiforme, the oblique sides behind almost straight to the angles,
the apical angles blunt; surface nearly as in trechiforme; elytra as
in the two preceding and oval, but broader, less than one-half longer
than wide, the fine striae broadly and strongly impressed inwardly,
very distinct though scarcely impressed externally, having excess-
ively minute remote punctulation, wholly invisible on cursory view,
the foveae moderate, asperate, near basal and apical third; tarsi
slender. Length (9) 4.5-4.6 mm.; width 1.6-1.7 mm. Washing-
ton State (Spokane), — Wickham obliviosum n. sp.

Basal angles right, sharp at apex, though not or but slightly prominent . 23

23 — Sides of the prothorax rounded throughout to the slightly prominent
basal angles. Black, with bluish lustre, the elytra piceous; under
surface black, the epipleura and abdominal tip piceo-testaceous;
head small, though four-fifths as wide as the prothorax, the sulci
moderate; antennae slender, fuscous, paler basally, about as long as
the elytra, the medial joints about three times as long as wide; pro-

28 MEMOIRS ON THE COLEOPTERA

thorax small, but little wider than an elytron, a fourth wider than
long, the median stria fine, not extending beyond the feeble anterior
impression, the sides strongly reflexed; foveae small, very deep,
oblique, nearer the carina than the middle; elytra oval, not quite
one-half longer than wide, the striae fine, entire as usual, impressed
internally, very fine externally, the seventh not visible; foveae mod-
erate, asperiform, near basal and apical third. Length (cf) 3-5
mm.; width 1.4 mm. California (Gilroy Hot Springs, Sta. Clara
Co.) volatile n. sp.

Sides of the prothorax with the posterior long oblique part broadly and
feebly sinuate to the right hind angles; prothorax larger, always
broader than an elytron 24

24 — Elytra deep black, not pale at tip, the opalescence barely detectable,,
shining; under surface black, the legs very pale. Head well devel-
oped, with rather narrow sulci, fully four-fifths as wide as the pro-
thorax, with moderate eyes; antennae fuscous, paler basally, four-
fifths as long as the elytra, the medial joints between two and three
times as long as wide; prothorax nearly a third wider than long, the
sides broadly rounded, feebly and broadly sinuate basally, the angles
right, sharp; base not wider than the apex; surface as in the other
species of this section, feebly punctulate at base, the foveae large,
elongate, at lateral fourth, deep, the carina shorter; elytra elongate-
oval, one-half longer than wide, one-half wider than the prothorax,
the sides arcuate, the apex narrowly rounded; striae fine, moderately
impressed, traceable at the sides, the foveae before basal and before
apical third. Length (cf 9 ) 3-5~3-7 mm.; width 1.4-1.55 mm.
British Columbia (Agassiz) impium n. sp.

Elytra black to blackish-castaneous in color, always nubilously paler ex-
ternally at tip, shining but more opalescent 25

25 — Elytra notably inflated. Oblong-oval, shining, black, the elytra
piceous, pale apically; under surface blackish, the epipleura brown;
head scarcely three-fourths as wide as the prothorax, much narrower
than an elytron, the sulci rather deep, the juxtocular puncture large
and deep; antennae fuscous, pale at base, long and rather slender,
the medial joints nearly three times as long as wide; prothorax two-
fifths wider than long, the sides subprominently arcuate before the
middle, oblique posteriorly, becoming subparallel for some distance
before the right angles, the apical angles narrowly obtuse; surface as
in the preceding species, the fine basal punctures distinct, the foveae
at lateral fourth, very deep and elongate, the carina long and dis-
tinct; elytra one-half longer than wide or very nearly, one-half
wider than the prothorax, . oblong-oval, the striae entire, rather
deeply impressed and very minutely and obscurely subpunctulate
internally, obsolescent externally, the seventh untraceable; foveae
before basal and at about apical third. Length (o71 9 ) 3-7~4-5 mm.;
width i. 6-1. 8 mm. California (San Francisco Bay to Humboldt
and Siskiyou) and Nevada (Reno). Abundan.t. Twenty-one ex-
amples parallelocolle Mots.

A — Similar to parallelocolle but shorter, with relatively still smaller
head and less transverse prothorax, the latter a fourth wider than

BEMBIDIIN/E 29

long and less than a third as long as the elytra, which are only
two-fifths longer than wide; antennae not quite so long or slender,
the medial joints less than three times as long as wide. Length
(cf) 3-65 mm.; width 1.65 mm. California (Hoopa Valley, Hum-

boldt Co.) amicum n. subsp.

Elytra relatively somewhat less inflated .26

26 — Elongate-oval, black, shining, the head and pronotum with feeble
greenish lustre, the elytra black, strongly opalescent; under surface
black, the abdominal tip pale, the epipleura piceous-black, the legs
very pale as usual in this section; head rather well developed, some-
what more than three-fourths as wide as the prothorax, the ocular
puncture moderate and not at the edge of the eye; antennae brown,
paler basally, not as long as the elytra, the medial joints about three
times as long as wide; prothorax a fourth wider than long, evenly
rounded at the sides, which are oblique and sinuate posteriori}', the
angles right, the anterior angles blunt; surface as usual, but with
the large deep foveae nearer the carina than the middle, the carina
rather long, very distinct [carina angulari indistincta — LeConte];
elytra oval, fully one-half longer than wide, one-half wider than the
prothorax, the strise fine, moderately impressed and minutely sub-
punctulate suturally, obsolete externally, the foveae as in the pre-
ceding. Length (9) 3-8 mm.; width 1.4 mm. California (Sta.

Cruz Mts.). San Jose, — LeConte iridescens Lee*

Elongate-suboval, much less ventricose than in either of the preceding,
not quite black, the elytra piceous; under surface blackish-piceous;
head small, less than three-fourths as wide as the prothorax, the
sulci rather deep, the orbital puncture moderate, subadjacent to
the eye; antennae piceous, rufous basally, about as long as the elytra,
rather thick, the medial joints between two and three times as long
as wide; prothorax relatively larger than in the two preceding and
distinctly transverse, two-fifths wider than long, the sides broadly
and moderately arcuate, not deeply sinuate near the angles, which
are right and sharp; base barely visibly wider than the apex; foveae
large, rugose, not so abrupt or deep as in the preceding, .the carina
moderate; elytra one-half longer than wide, barely two-fifths wider
than the prothorax, the sides evenly arcuate as usual in this sub-
section, the striae fine, entire, feebly impressed internally, obsoles-
cent externally, not definitely micro-punctulate, the foveae near two-
fifths and two-thirds, closer than usual. Length (d71) 3-7 mm.;
width 1.35 mm. British Columbia (Metlakatla), — Keen.

deceptor n. sp.
27 — Discal striae completely obsolete, except near the suture, where there

are two or sometimes three observable 28

Discal striae evident throughout the width, though sometimes becoming

very fine and feeble externally 29

28 — Body oblong-oval, ventricose, moderately convex, highly polished,
black, the elytra dark brownish-piceous; under surface, epipleura and
legs deep black throughout; head moderate, three-fourths as wide
as the prothorax and narrower than an elytron, the sulci rather
coarse and deep, the eyes prominent; antenna? black, not quite as

3O MEMOIRS ON THE COLEOPTERA

long as the elytra, the medial joints three times as long as wide;
prothorax two-fifths (cf) to two-thirds (9) wider than long, much
wider at base than apex, the sides subprominently rounded before
the middle, oblique and broadly, feebly sinuate behind, the angles
right and sharp; surface with deep and broadly impressed abbrevi-
ated median stria and strongly reflexed lateral edges, the basal foveae
very large, rugulose, acute and deep centrally, the carina long and
conspicuous; elytra oblong-oval, two-fifths longer than wide, one-
half wider than the prothorax, the sides evenly and rather strongly
arcuate; two striae and a third, partially, fine and feebly impressed,
are visible suturally, generally subentire; foveae conspicuous, irreg-
ular and impressed, at two-fifths and behind two-thirds. Length
(d* 9 ) 4.2-4.6 mm.; width 1.75-2.0 mm. California (Lake Tahoe).

testatum n. sp.

Body oblong-oval, smaller and much less inflated, shining, rufo-piceous,
the elytra clearer rufous; under surface and legs pale red-brown;
head nearly four-fifths as wide as the prothorax and fully as wide as
an elytron, the sulci moderate, the ocular puncture isolated; antennae
dark, piceous-black throughout, thick, three-fourths as long as the
elytra, the medial joints not quite twice as long as wide; prothorax
one-half wider than long, the sides broadly arcuate, oblique and
broadly, feebly sinuate behind, the angles more than right but sharp;
side margins rather narrowly reflexed; surface convex, the stria
rather fine; foveae at lateral fourth, rather small and deep; base
punctulate, barely visibly wider than the apex; elytra convex, barely
one-half longer than wide, not quite one-half wider than the pro-
thorax, parabolically rounding behind in fully two-fifths, the sides
moderately arcuate; two to three sutural striae are feebly impressed
and closely micro-punctulate, none except the sutural entire; foveae
small, at one-third and three-fifths; both anterior legs are missing
in the type. Length 3.7 mm.; width 1.45 mm. British Columbia

(Metlakatla), — Keen nescium n. sp.

29 — Legs black or blackish 30

Legs rufous throughout 35

30 — Form more narrowly oblong, the prothorax very much more than

half as wide as the elytra 31

Form more ventricose, the prothorax only more or less slightly over half

as wide as the elytra 32

31 — Black, polished, with very faint bronze lustre, the legs deep black;
head nearly as in ftmereum, three-fourths as wide as the prothorax,
but subequa! in width to an elytron, the antennae black and not quite
as long as the elytra, the medial joints more than twice as long as
wide; prothorax one-half wider than long, rather strongly rounded
at the sides, which become sinuate basally and parallel for some dis-
tance before the base, the angles very sharp, somewhat 'prominent,
rather more than right owing to the usual obliquity of the sides of
the base; side margins moderately reflexed, very finely so apically,
the stria deep, not attaining the apex, the foveae large, shallow,
feebly rugose, rather briefly and linearly impressed at the bottom,
the carina moderately long; elytra one-half longer than wide, three-

BEMBIDIINJE 31

sevenths wider than the prothorax, slightly wider behind the middle
than at base, evenly rounded in apical two-fifths; striae entire, deeply
impressed, becoming very shallow, fine and feeble laterally, all mi-
nutely, remotely and irregularly punctulate; foveae irregular, at three-
sevenths and before apical third, mutually much less separated than
the second from the apex. Length (c?) 3.4 mm.; width 1.4 mm.
Queen Charlotte Islands (Massett), — Keen viator n. sp.

Black, shining, the upper surface with strong bronze lustre throughout,
the under surface and legs black; head rather well developed, four-
fifths as wide as the prothorax, the sulci rather broad, alutaceous;
antennae black, very slender, the fourth joint about three times as
long as wide; prothorax short, fully three-fifths wider than long, the
sides anteriorly evenly rounded, becoming oblique and broadly, very
feebly sinuate in basal half, the angles obtuse but sharp; surface
much less convex than in viator, the transverse impressions very
faint, the stria not entire, the sides rather widely reflexed; foveae
large, rugulose, very shallow, with a more impressed short line at
base beyond lateral fourth, the carina rather long and strong; elytra
oblong, subparallel, three-sevenths longer than wide, two-fifths wider
than the prothorax, subcircularly rounded in fully apical third;
striae fine, moderately impressed suturally, feeble externally, the
seventh scarcely observable except under a certain angle of illu-
mination; foveae irregular, at three-sevenths and three-fourths.
Length (<f) 34mm.; width 1.5 mm. British Columbia (Metlakatla),
-Keen illex n. sp.

32 — Elytra subinflated posteriorly, wider behind the middle than at
base, the foveae lying within shallow impressions, which however do
not differ in character from the general surface 33

Elytra parallel, the foveae not lying within areas of impression; shining,
the head faintly alutaceous 34

33 — Body and legs deep shining black, without metallic lustre of any
kind, the head alutaceous, the trochanters paler; head well devel-
oped, three-fourths as wide as the prothorax, slightly narrower than
an elytron, the sulci broad, rather deeply impressed; eyes large and
prominent; antennae slender, black, three-fourths as long as the ely-
tra, the medial joints not quite three times as long as wide; prothorax
short, one-half (cf) to three-fifths (9) wider than long, the sides
strongly, evenly arcuate, converging and broadly, strongly sinuate
basally, the angles right and very sharp, the apical angles obtuse
but only slightly blunt; side margins broadly reflexed; stria only
attaining the pronounced anterior transverse impression; foveae
deeply, linearly impressed, rugose, the carina long and strong; ely-
tra about one-half longer than wide, one-half wider than the pro-
thorax, parabolic in apical two-fifths; striae subequal, strong, finer
but distinct laterally, entire, the foveae just before the middle and
near apical third; second and fifth striae deeper at apex. Length
(cf1 9 ) 4.2-4.8 mm.; width 1.7-2.2 mm. British Columbia (Inver-
ness and Metlakatla), — Keen. Fourteen examples.. haruspex n. sp.

34 — Black, with greenish lustre, the elytra obscure piceous, the under
surface greenish-black; legs black, the femora gradually toward base,

32 MEMOIRS ON THE COLEOPTERA

and the trochanters, testaceous; head four-fifths as wide as the pro-
thorax, though much narrower than an elytron, the sulci rather
deep, moderately wide; antennae black, slender, three-fourths as
long as the elytra, the medial joints nearly three times as long as
wide; prothorax one-half wider than long, the sides strongly, evenly
rounded to near basal fourth, straight and parallel thence to the
right and very sharp angles, the apical slightly blunt, the sides
strongly reflexed; stria deep but visible only between the very faint
transverse impressions; foveae very large, shallow and rugulose,
briefly linearly somewhat deeper centrally, the carina long and dis-
tinct; elytra nearly one-half longer than wide, three-fourths wider
than the prothorax, strongly rounded behind in two-fifths, the sides
broadly and moderately arcuate; striae fine but impressed and dis-
tijict throughout the width, shallower laterally, the seventh obso-
lete, all faintly and irregularly micro-subpunctulate, the foveae at
two-fifths and three-fourths. Length (9) 4.0-4.6 mm.; width 1.9
mm. Colorado (Boulder Co.), — Mrs. T. L. Casey., .turbatum n. sp.

Black, much more faintly virescent anteriorly, the elytra much paler
testaceous-brown throughout, black and non-metallic beneath, the
epipleura piceous; legs blackish-piceous, the trochanters pale; head
three-fourths as wide as the prothorax, very much narrower than an
elytron, the sulci very wide, the intervening convexity of the front
narrower and stronger; antennae black or feebly picescent, four-fifths
as long as the elytra, the medial joints fully three times as long as
wide; prothorax shorter, three-fifths wider than long, only feebly
rounded at the sides anteriorly, the sides moderately oblique and
broadly, feebly sinuate in about basal half, becoming parallel only
at the right basal angles, the apical angles obtuse and blunt; surface
nearly as in turbatum but with rather more pronounced and more
rugulose transverse impressions; elytra shorter and more obtusely
rounded in about apical third, two-fifths longer than wide, three-
fourths wider than the prothorax; striae deeply impressed inwardly,
very fine and feeble outwardly, the seventh obsolete; foveae at two-
fifths and rather before three-£purths. Length (cf ) 4.0 mm.; width
1.65 mm. Colorado (Red Cliff), — Wickham conflictum n. sp.

35 — Seventh stria distinct. Body rather depressed, ventricose, shining,
the head not duller, black, with metallic-greenish lustre, the elytra
polished, castaneus and not metallic; under surface black; head
three-fourths as wide as the prothorax, much narrower than an ely-
tron, the sulci deep, alutaceous; antennae slender, about as long as
the elytra, the medial joints fully three times as long as wide; pro-
thorax slightly more than one-half wider than long, the sides broadly
rounded and rather widely reflexed, becoming moderately oblique and
broadly, feebly sinuate in about basal half, the angles right and very
sharp, the apical blunt; surface with the stria deep, ending at the
obsolescent impressions, the foveae very large, shallow and rugose,
briefly and linearly somewhat deeper centrally, the carina strong in
basal fourth; elytra oblong, parallel, with broadly arcuate sides and
rather obtusely rounded apex, two-fifths longer than wide and three-
fifths wider than the prothorax, the striae very distinct, smooth

BEMBIDIIN^: 33

throughout and entire, deeply impressed internally, less so externally,
the foveae rather irregular, at two-fifths and four-fifths. Length
(cf) 3-9 mm.; width 1.7 mm. Xew York (Catskill Mts.), — H. H.

Smith. A single example rusticum n. sp.

Seventh stria obsolete or barely traceable 36

36 — Head well developed, but little narrower than an elytron. Body
moderately convex or ventricose, shining, with barely alutaceous
head, black, with feeble green lustre anteriorly, the elytra and epi-
pleura castaneous; tinder surface black; head four-fifths as wide as
the prothorax, the sulci rather shallow, the ocular puncture moder-
ate; antennae long, slender, piceous-brown throughout, nearly four-
fifths as long as the elytra, the medial joints fully three times as
long as wide; prothorax only two-fifths wider than long, the evenly
arcuate and well reflexed sides becoming straight and parallel in
basal fifth, the angles right and very sharp, the apical obtuse and
blunt; stria moderate, not quite entire; foveae large, rugose, rather
shallow, linearly deep at the bottom, the carina long and strong;
elytra just visibly inflated posteriorly, gradually strongly narrowed
in more than apical third, about one-half longer than wide and two-
thirds wider than the prothorax; striae fine, moderately impressed,
gradually feeble externally; foveae rather irregular, just before the
middle and near apical third. Length (9 ) 6-0-5.5 mm.; width 2.1
—2.2 mm. California (Truckee). Three specimens, .adultum n. sp.
Head distincly less developed, always very much narrower than an ely-
tron .37

37 — Prothorax short and transverse. Body small, oblong-oval, moder-
ately shining, black and without metallic lustre anteriorly, the ely-
tra red-brown; under surface black, the epipleura pale brown; head
two-thirds as wide as the prothorax, with rather deep sulci; antennae
not quite as long as the elytra, fuscous, gradually paler basally, the
medial joints only about twice as long as wide; prothorax fully
three-fifths wider than long, widest and laterally rather more rounded
about the middle, the sides thence somewhat abruptly oblique and
broa'dly, strongly sinuate to the right and moderately sharp angles,
the anterior angles obtuse but rather sharp; surface with a fine stria
between the feeble transverse impressions, moderately reflexed at
the sides, the foveae large, shallow and rugose, broadly, sublinearly
deeper at lateral fourth, the carina distinct; elytra feebly inflated
posteriorly, broadly parabolic in nearly apical two-fifths, two-fifths
longer than wide and about one-half wider than the prothorax, the
fine striae moderately impressed, feeble externally, the foveae irreg-
ular, just before the middle and behind apical third. Length (9)

3.5 mm.; width 1.5 mm. California (Truckee) dilutum n. sp.

Prothorax much less abbreviated; size larger 38

38 — Body oblong-suboval, only feebly ventricose, moderately convex
and shining, black, the elytra blackish-castaneous; head three-fourths
as wide as the prothorax, the sulci deep, the orbital puncture ad-
joining the eye; antennae elongate, moderately slender, as long as
the elytra, rufo-piceous, blackish distally, the medial joints three
T. L. Casey, Mem. Col. VIII, Oct. 1918.

34 MEMOIRS ON THE COLEOPTERA

times as long as wide; prothorax a third (d" ) to two-fifths (9 ) wider
than long, strongly and evenly rounded at the sides, the latter ob-
lique and gradually more sinuate in about basal half, the angles
right and sharp; stria fine between the feeble transverse impressions;
margins well reflexed ; foveae large, rugulose and shallow, briefly
sublineate at the bottom, the carina long and strong; elytra some-
what inflated posteriorly, one-half longer than wide, one-half wider
than the prothorax, the striae fine, moderately impressed, gradually
feeble laterally, the seventh easily glimpsible at certain angles of
reflection; foveae irregular, at three-sevenths and three-fourths.
Length (d71 9 ) 4.2-4.5 mm.; width 1.6-1.8 mm. British Columbia
(Stikine River Canon), — Wickham. Six examples .bucolicum n. sp.

Body strongly ventricose, shining, black, with feeble greenish lustre
anteriorly, the elytra bright and pale testaceous-brown; under sur-
face black, the epipleura brown; head three-fourths to nearly four-
fifths (cf) as wide as the prothorax, with broad but deep sulci;
antennae slender, fuscous, the basal joint rufous, nearly as long as
the elytra, the medial joints somewhat more than three times as
long as wide; prothorax a fourth to third wider than long, the base
and apex subequal, the sides widely reflexed, broadly, evenly arcu-
ate, becoming rapidly sinuate and parallel near the base, the angles
right and sharp, the apical angles obtuse and rather blunt; surface
with the stria stibentire, the foveae large, shallow and rugose, deeply
and briefly sublinear medially at base, the carina long and strong;
elytra one-half longer than wide to somewhat less, the posterior
inflation barely at all evident, the sides broadly arcuate, broadly
parabolic in about apical third, two-thirds to three-fourths wider
than the prothorax; striae fine, barely at all impressed though dis-
tinct and subequal but feebler laterally, entire as usual in this group;
foveae moderate, near three-sevenths and three-fourths. Length
(cf 9 ) 4.0-4.8 mm.; width 1.65-1.85 mm. Colorado. Levette col-
lection. Fourteen examples, displaying but little variability.

gratiosum n. sp.

39 — Body elongate-suboval, moderately convex, the type pale yellowish-
testaceous throughout, with the legs straw-yellow, shining, the head
faintly alutaceous, the sulci rather shallow; antennae very slender
and elongate, about as long as the elytra, slightly fuscous, paler
basally, the first joint palest; medial joints fully three times as long
as wide; prothorax a third wider than the head, two-fifths wider
than long,' broadly reflexed at the sides, which are strongly, sub-
evenly rounded, becoming oblique but only just visibly sinuate in
about basal half, the angles right and sharp; surface with the fine
stria extending from the apical margin to the pronounced trans-
verse subbasal impression, the base somewhat depressed and punc-
tulate; near basal fifth there is a short oblique obtuse elevation, ex-
tending to the marginal gutter; foveae large, moderately deep,
smooth, subbistriate; the usual carina is wanting and replaced by
the oblique elevation; elytra oval, with evenly arcuate sides, rather
more than one-half longer than wide and one-half wider than the
prothorax; striae very fine, entire though extremely feeble, having

BEMBIDIIN.E 35

remote and infinitesimal punctures, visible only under high magni-
fication; foveae small, near two-fifths and three-fourths. Length
(9) 4.8 mm.; width 1.9 mm. California (Booneville, Mendocino
Co.) repens n. sp.

The species identified above as erasum Lee., from Lake Tahoe
specimens, agrees with the original description perfectly in all re-
spects except one, but this is very difficult to understand if the ma-
terial alluded to really represents the species of LeConte, for that
author states that the third stria is "profunde bipunctata." The
first section of the subgenus, or Lionepha proper, has the dorsal
fovese notably small and feeble throughout. The second section
may be identical with the European Plataphus of Motschulsky,
and if so will have to be removed to form a separate subgenus;
the species in this section described under the name ampliatum is
probably that identified as the Alaskan incertum Mot., by Hay-
ward, but the description of incertum given by its author (Bull.
Mosc., 1845, P- 35°). shows that it is a rather smaller species, 3.3
by 1.5 mm., obscurely a?neous above and, although most of the
structural characters given might be considered applicable to am-
pliatum, the radical difference in habitat — Sitka, an island of the
Pacific, and the high mountain regions of Colorado — should cause
one to hesitate in definitely stating the two to be specifically iden-
tical. The multiplicity of allied though obviously distinct forms
in the Pacific regions, such as blanditum, saturatum, lividulum and
improvisum, is another cause of uncertainty in such an identification.

The third section, or that typified by trechiforme and iridescens of
LeConte, is so distinct in habitus that it may be regarded as more
properly forming a separate subgenus, as indeed recommended by
Hayward, although I regard the dorsal foveae of the elytra as at-
tached to the third stria, and not entirely free as in Notaphus, and
it therefore should form a part of the Peryphns series. Some of
the species, and especially such as haruspex, conflictum and rusti-
cum, and even funereum Lee., were regarded as a part of the pla-
natum group by Hayward, but I think find a more fitting place near
the trechiforme subsection of what is called Trechoneplia above.
Rusticum may be allied to simplex Hayw., but the terms slender and
elongate, with the prothorax narrower at base than apex and having
the basal fovese deep, could not be applied at all well to rusticum,

36 MEMOIRS ON THE COLEOPTERA

where the thoracic base is somewhat wider than the apex, with
notabty large and shallow fovese and the elytra are broadly inflated.
Haruspex may be the Vancouver form mistaken for quadrifoveo-
latum Mann., of the Island of Sitka; the latter is however a very
much smaller and narrower species, 3.3 by 1.3 mm. in dimensions;
the upper surface in haruspex has no trace of a blue-black color-
ation, as described in nigrocceruleum Hayw.

The species named iridescens by LeConte, seems to be repre-
sented correctly by the specimen described above, taken by Har-
ford or Koebele in Sta. Cruz Co.; it at least agrees very well with
the original diagnosis (Ann. Lye. N. Y., 1852, p. 191), except in
the statement quoted in the above description, and this lack of
distinctness in the carina may be due to an accidental defect in
the unique type. I have identified the more abundant form, with
less black and more inflated elytra, as parallelocolle Mots., as it
agrees well with the description of that species if we assume the
immaturity of Motschulsky's type.

The species described above under the name repens is a very
remarkable and isolated type of the subgenus, only in general fea-
tures allied to the trechiforme section, though more evidently to
that than any other. It is particularly notable in the larger head,
which is very deeply retracted — virtually to the eyes — and in the
excessively fine and almost completely unimpressed elytral striae
throughout the width, even the seventh being visible. The descrip-
tion of vandykei Blaisd., from Mendocino Co., seems to correspond
in some degree with the type of repens, but indicates a larger spe-
cies, having the prothorax equally wide at base and apex, and in
length equal to the basal width, and not having the base wider than
the apex and much exceeding the medial length, as is the case in
repens; it differs especially, however, in the sides of the prothorax,
which in vandykei are said to be sinuate at base, becoming parallel
before the hind angles, which are right; in repens the sides are ob-
lique and very nearly straight basally, the hind angles obtuse
though very sharp; repens differs also in having the fifth elytral
stria briefly and feebly deepened at apex, not "strongly grooved"
at tip. The type specimen is surely immature, and the species is
probably piceous in color, with very pale legs, in its normal color-
ation.

BEMBIDIIN.E 37

Group VI — planatum
Subgenus Melomalus nov.

This group is composed of a moderate number of species, occur-
ring only in the western parts of the continent, and agreeing very
well in certain features of habitus. The body is oblong, notably
depressed on the upper surface, with the elytral striae entire, sub-
equally strong throughout the width as a rule, the seventh always
evident and frequently almost as deep as the sixth. The color is
usually deep black, without evident metallic lustre, and the elytra
are never variegated or maculate. The mentum tooth is generally
well developed, triangular, with broadly rounded and obtuse tip
but, in the singular extensum type, is extremely short and broad,
with the apex obtuse. The two dorsal foveae of each elytron ad-
here to the inner side of the third stria as a rule, rarely becoming
detached, and vary from moderate in size to large and impressed,
as in the second section of the preceding subgenus. The species
planiusculum and complanulum of Mannerheim, of Sitka and Kad-
jak, Alaska, respectively, belong to this group, but I must hold
the latter to be different from anything before me at present; the
former is said to have a greenish margin of the subquadrate pro-
notum and large deep elytral foveae; its dimensions are said to be
4 by 1.5 mm. The latter is nigro-aeneous in lustre, the prothorax
twice as wide as long and the elytral foveae small; it is 3.3 by 1.3
mm. in size and is probably different from any of the numerous
allied California forms.

The species at hand form three very distinctly limited sections
as follows:

Xeck short; body large; elytra broad, alutaceous, the prothorax but
slightly transverse; striae barely impressed, the inner with very fine
irregular and close-set punctulation; foveae rather large; legs and
tarsi very long and slender. Section MELOMALUS in sp 2

Xeck short; body small, narrower, the elytra polished; prothorax decid-
edly transverse; striae deeply impressed as a rule, impunctate; foveae
small or large; tarsi moderate. Section MICROMELOMALUS nov. . .4

Neck long; body very elongate, more or less depressed, the elytra pol-
ished; prothorax subcordiform, barely wider than long; striae im-
punctate, the foveae moderate; tarsi rather long, very slender.
Section TRACHELONEPHA nov 10

2 — Prothorax sinuate at the sides basally, the sides becoming parallel in
basal fifth or sixth. Body broadly oblong, depressed, black, pol-

38 MEMOIRS ON THE COLEOPTERA

ished, greenish-black anteriorly, the elytra less shining and faintly
greenish; under surface and legs black; head five-sixths as wide as
the prothorax, the sulci broad, not very deep; antennae long and very
slender, black, three-fourths as long as the elytra, the medial joints
about four times as long as wide; prothorax a third wider than long,
the sides broadly, evenly arcuate, rather abruptly sinuate basally,
moderately broadly, strongly reflexed; surface with crease-like lines
and strong subapical but obsolete subbasal impression, the stria be-
tween the two moderate; basal foveae large, shallow, rugose, deeply
linearly and obliquely impressed beyond lateral fourth, the carina
long but only moderately strong; elytra large, three-fifths longer
than wide, three-fourths wider than the prothorax, gradually para-
bolic in fully apical third, the striae fine, feebly impressed, the outer
ones distinct, though still feebler, the intervals just visibly convex;
foveae at three-sevenths and four-fifths, deep; apical part of the fifth
stria a long and conspicuous groove. Length (9 ) 7.0 mm.; width
2.7 mm. California (near San Francisco), — Dunn., .solutum n. sp.

Prothorax moderately oblique and broadly, very feebly sinuate at the
sides in about basal half, the angles sharp as in the preceding, though
evidently more than right 3

3 — Pronotum broadly and strongly reflexed at the sides, the body broadly
oblong, black, the anterior parts polished and with feeble viridi-
aeneous lustre, the elytra dull bronzy-black, the under surface and
legs black; head five-sixths as wide as the prothorax, it and the an-
tennae nearly as in sohitum, the medial joints, however, rather less
than four times as long as wide; prothorax barely a fourth wider
than long, the surface throughout nearly as in the preceding, except
that the transverse basal impression is rather deep and distinct;
elytra not quite three-fifths longer than wide and four-fifths wider
than the prothorax, flat above, the striae fine and scarcely at all
impressed, the seventh about as distinct as the sixth; foveae very
moderate, at three-sevenths and four-fifths. Length (9) 7-7 mm.;
width 2.8 mm. British Columbia. Lake Superior, — LeConte.

planatum Lee.

Pronotum much more narrowly but strongly reflexed at the sides; upper
surface shining and blackish-green throughout, the elytra slightly
less shining; under surface and legs black; head four-fifths as wide
as the prothorax, nearly as in the two preceding, the very slender
antennae with the medial joints four times as long as wide; prothorax
slightly more than a fourth wider than long; surface throughout
nearly as in solutum, the transverse subbasal impression feeble,
obsolete at the middle; elytra one-half longer than wide and three-
fourths wider than the prothorax, ogival in nearly apical two-fifths:
striae fine, slightly impressed and with feebly convex intervals, the
seventh stria feeble, sometimes only just observable in the male;
strial punctulation stronger and more distinct than in either of the
two preceding; foveae rather strong, at three-sevenths and four-
fifths, the very deep apical groove of the fifth stria as in the two pre-
ceding. Length (i 9 , 7 d") 6.2-7.0 mm.; width 2.3-2.5 mm. Cal-

BEMBIDIIN-4E 39

ifornia (north of San Francisco). The description is drawn from

the female • adjutor n. sp.

4 — Elytra notably short, only about a third longer than wide. Black,
polished throughout, without trace of metallic lustre, the legs pale
brown, the femora piceous, paler basally; head small, though three-
fourths as wide as the prothorax, the sulci deep and alutaceous;
antenna? blackish, the basal joint and apex of the second and third
pale, subequal in length to the elytra, the medial joints between
two and three times as long as wide; prothorax one-half wider than
long, the sides inflated and evenly rounded nearly to the base, where
they become oblique and broadly, feebly sinuate, the angles rather
obtuse but not rounded; surface moderately convex, the transverse
impressions evident, the stria entire; foveae large and shallow, rugu-
lose, the carina moderate; elytra two-thirds wider than the prothorax,
oblong, parallel, with broadly arcuate sides and very obtusely
rounded apex in less than posterior third; stria? strongly impressed,
especially internally, everywhere very conspicuous; foveae well de-
veloped, at two-fifths and four-fifths. Length (cf ) 3-O mm.; width
1.25 mm. California (Hoopa Valley, Humboldt Co.)

curtulatum n. sp.

Elytra always distinctly more than a third longer than wide .5

5 — Dorsal foveae of the elytra large and deeply impressed. Body oblong-
suboval, very moderately convex, shining, black, with feeble aeneous
lustre above, black beneath, the legs black; head well developed,
four-fifths as wide as the prothorax, the sulci broad; antennae black,
rather slender, three-fourths as long as the elytra, the medial joints
evidently more than twice as long as wide; prothorax two-fifths to
one-half wider than long, the sides strongly rounded, oblique and
sinuate basally, the angles right or rather more, sharp; sides some-
what widely but not strongly reflexed; transverse impressions very-
feeble, the stria limited by them ; foveae large, rugose, shallow, linearly
deeper at their middle at base, the carina moderate; elytra one-half
longer than wide, three-fifths wider than the prothorax, rounded in
apical third, the feebly arcuate sides subparallel; margin incurved
at base to the fourth stria, the striae fine but deeply impressed — at
least suturally, the foveae unusually approximate, barely before the
middle and at apical fourth. Length (6 cf, 4 9) 3-3-3-7 mm.;
width 1.3-1.45 mm. British Columbia (Metlakatla and Inverness),

—Keen planiusculum Mann.

Dorsal foveae small, or at least not widely impressed as in planiusculum. .6
6 — Body more elongate, the prothorax only a fourth wider than long.
Depressed and shining, black, without metallic lustre, the legs pice-
ous; head fully four-fifths as wide as the prothorax, the sulci broad,
alutaceous, not very deep; antennae long, piceous-black, four-fifths
as long as the elytra, the medial joints nearly four times as long as
wide; prothorax evenly and distinctly rounded at the sides, the latter
converging and broadly, distinctly sinuate posteriorly, the angles
right or slightly more and sharp; stria deep and subentire, the trans-
verse impressions subobsolete, the margins strongly reflexed; foveae
large, shallow, rugulose, deep medially at base, the carina long, dis-

40 MEMOIRS ON THE COLEOPTERA

tinct; elytra three-fourths longer than wide, slightly inflated behind
the middle, obtusely ogival in apical third, not quite one-half wider
than the prothorax; striae deeply impressed, with convex intervals;
fovese at three-sevenths and four-fifths; legs longer and more slen-
der than in the preceding. Length (i cf , 3 9 ) 4.2-4.5 mm.; width
1.5-1.6 mm. California (coast regions just north of San Francisco).

vespertinum n. sp.

Body shorter, the prothorax much more abbreviated 7

7 — Elytral striae not at all impressed, fine, deep and groove-like through-
out, though still finer at the sides, virtually impunctate; intervals
perfectly flat. Body depressed, black, not metallic, the legs piceous-
black; head three-fourths as wide as the prothorax, the sulci moder-
ately deep, alutaceous as usual; antennae slender, piceous-black,
with paler basal joint, four-fifths as long as the elytra, the medial
joints between two and three times as long as wide; prothorax two-
fifths wider than long, the broadly rounded sides becoming oblique
and broadly, just visibly sinuate behind, the angles slightly more
than right; stria deep but only between the very feeble transverse
impressions; foveae large, rather shallow, rugose, only indefinitely
deeper medio-basally, the carina rather long and strong; elytra
very feebly inflated posteriorly, with feebly arcuate sides, circu-
larly rounded in posterior third, one-half longer than wide, less
than one-half wider than the prothorax; foveae at three-sevenths and
near three-fourths. Length (9) 3-5 mm.; width 1.28 mm. Cal-
ifornia (Soda Springs, Anderson Valley, in or near Mendocino Co.).

effetum n. sp.
Elytral striae deeply impressed, with convex intervals as in all the others

of this section 8

8 — Head well developed, almost as wide as the prothorax. Black, shin-
ing, with feeble greenish lustre on the head and pronotum, the legs
blackish-piceous; head with prominent eyes, the rather deep sulci
feebly alutaceous; antennae slender, black, about three-fourths as
long as the elytra, the medial joints three times as long as
wide; prothorax two-fifths wider than long, with the base and apex-
equal, the sides strongly and evenly arcuate, becoming distinctly
sinuate posteriorly and nearly parallel before the angles, which are
right and sharp, the apical angles not very blunt; surface slightly
convex, the impressions very feeble, the stria fine; margins rather
broadly and strongly reflexed; foveae large, shallow, rugulose, deeper
centrally at base, the carina moderate but distinct; elytra oblong,
with parallel, broadly arcuate sides, obtusely and subcircularly
rounded in nearly apical third, somewhat less than one-half longer
than wide, four-fifths wider than the prothorax; striae rather deeply,
subequally impressed throughout the width and entire as usual;
deeper apical part of the fifth short and very oblique; intervals
broadly convex, the foveae at three-sevenths and four-fifths. Length
(cf 9 ) 3.8-4.2 mm.; width 1.5-1.7 mm. California (Duncan's

Mills, Sonoma Co.). Ten examples oppressum n. sp.

Head smaller, distinctly narrower than the prothorax 9

9 — Form oblong, depressed, deep black throughout and lustrous, the

BEJIBIDIIN/E 41

legs piceorufous; head three-fourths as wide as the prothorax, with
rather deep sulci and strongly convex front between the latter; an-
tennae piceous-black, the basal joint slightly paler, slender, nearly
four-fifths as long as the elytra, the medial joints not quite three
times as long as wide; prothorax nearly one-half Avider than long,
the sides strongly reflexed, rounded, generally somewhat more prom-
inently so near the middle, oblique and broadly, very feebly sinu-
ate basally, the angles obtuse but rather sharp; surface nearly as
in the preceding, except that the foveae are rather less strongly
rugose; elytra one-half longer than wide to a little less, only two-
fifths wider than the prothorax, parallel, circularly rounded in apical
third, the sides subparallel and feebly arcuate; striae fine, moderately
impressed and with feebly convex intervals throughout, the deep
apical part of the fifth longer and less oblique than in oppressum,
the foveae at three-sevenths and three-fourths. Length (d71 9 ) 3-2-
3.5 mm.; width 1.2-1.35 mm. California (Sonoma and Sta. Clara
Cos.). Eight examples flebile n. sp.

Form more narrowly oblong, still smaller in size, similar in coloration
of the body, legs and antennae; head nearly four-fifths as wide as
the prothorax; antennae slender, almost three-fourths as long as the
elytra, the medial joints between two and three times as long as
wide; prothorax two-fifths wider than long, the broadly, rather
strongly arcuate sides slightly oblique and broadly and not strongly,
though distinctly, sinuate behind, the angles obtuse but sharp; sur-
face nearly as in the preceding; elytra also nearly as in flebile, but
narrower, though one-half wider than the prothorax, the latter being
relatively somewhat narrower than in flebile. Length (c/1 9 ) 2.9-
3.2 mm.; width 1.1-1.2 mm. California (Gualala and Anderson
Valley, Alendocino Co.). Three specimens timefactum n. sp.

Form and coloration nearly as in the two preceding, but with more nearly
deep black legs and antennae and more transverse prothorax; head
three-fourths as wide as the prothorax, with deep and rather narrow
sulci; antennae subequal in length to the elytra, not very slender;
the medial joints between two and three times as long as wide, the
basal joint piceous; prothorax short, fully one-half wider than long,
the sides strongly, evenly rounded, oblique and distinctly sinuate
behind, the angles right and sharp; surface nearly as in the pre-
ceding, except that the transverse impressions are more distinct,
the foveae very large but barely concave, rugose, with a long linear
impressed medio-basal part, the carina moderate; elytra oblong,
with parallel and broadly arcuate sides, two-fifths longer than wide,
circularly rounded in about apical third, one-half wider than the
prothorax, the striae well impressed and with moderately convex
intervals throughout, the fifth as in the preceding two species; foveae
near two-fifths and four-fifths. Length (cf 9 ) 2.75-3.3 mm.; width
1.15-1.4 mm. Colorado. Levette collection. Fifteen specimens.

decrepitum n. sp.

10 — Form elongate-suboval, only moderately depressed, polished black
throughout, the anterior parts slightly greenish; legs piceo-rufous;
head not distinctly narrower than the prothorax, with unusually

42 MEMOIRS ON THE COLEOPTERA

*
long neck and moderate, very prominent eyes, the sulci rather broad

and shallow; antennae piceous, the basal joint rufous, very long and
slender, fully as long as the elytra, the medial joints between three and
four times as long as wide; prothorax barely visibly wider than long,
much narrower at base than apex; base distinctly shorter than the
length; sides broadly arcuate, becoming rapidly sinuate behind and
parallel in basal fourth, the angles right and sharp, the apex feebly
sinuate, with blunt angles; surface smooth, the stria fine, extending
from base to the distinct and sharp subapical impression, the basal
impression wholly obsolete medially; foveae large, obliquely elongate
and deep, beyond lateral fourth, only feebly rugulose, the carina
rather long and distinct; margins strongly but not very broadly re-
flexed; elytra two-thirds longer than wide and almost twice as wide
as the prothorax, feebly subinflated posteriorly and evenly rounded
behind in about two-fifths; sides feebly arcuate, the rounded hu-
meri widely exposed at base: striae entire, fine, feebly impressed, be-
coming subobsolete externally, the seventh obsolete; foveae rather
strong, at three-sevenths and near four-fifths; tarsi very long and slen-
der. Length (9 ) 5.3 mm.; width 2.0 mm. California (Hydesville,
Eel River Valley, Humboldt Co.). One example. . . . electum n. sp.
Form narrow, elongate, strongly depressed above, shining, piceous-black,
the elytra and epipleura rather pale castaneous; under surface black,
the legs long and very slender, pale piceous, the base and tip of the
femora testaceous; head but just visibly narrower than the prothorax,
with moderate though prominent eyes, the sulci deep, shining; an-
tennae long and very slender, piceous-black, the basal joint paler,
fully as long as the elytra, the medial joints fully four times as long
as wide; prothorax less than a fifth wider than long; base distinctly
narrower than the apex, the sides evenly, strongly rounded, rapidly
converging behind the middle and sinuate, becoming parallel in
more than basal fourth, the angles slightly obtuse because of the
lateral obliquity of the base, but not blunt; apex broadly sinuate,
with slightly blunt angles; surface with strong anterior impression,
the posterior obsolete, the stria deep and strong, biabbreviated;
margins moderately reflexed; foveae moderate, only slightly rugu-
lose, very deep, sublinear, far outside of lateral fourth and unusually
near the slender feeble carina; elytra about twice as long as wide,
not quite one-half wider than the prothorax, gradually parabolic in
about apical third, subparallel, with very feebly arcuate sides, the
margin incurved at base to the fifth stria, which becomes very deep
in apical sixth; striae smooth, deeply impressed internally, becoming
feeble externally, the seventh very faint; intervals convex suturally;
foveae just before the middle and behind apical fifth. Length (9 )
5.3 mm.; width 1.8 mm. California (Soda Springs, Anderson Val-
ley, Mendocino Co.) extensum n. sp.

My identification of planatum Lee., rests upon the authority of
Mr. Hayward, who made actual comparisons of the Lake Superior
and British Columbia representatives; the forms inhabiting the

BEMBIDIESLE 43

middle coast regions of California are specifically different, as can
be seen at once by the ample series of adjutor at hand. The pla-
niusculum series presents a very different habitus from the plana-
tum section, because of the very much smaller size, impunctate
stride and polished elytra. More material than the unique type of
effetum would be highly desirable, in order to judge of the perman-
ence of the very remarkable elytral striation, in which it differs
radically from any other species of the second section. Otherwise
it very closely resembles flebile, excepting that the antennae are
perceptibly longer and the prothorax more evenly rounded on the
sides anteriorly.

The two species forming the third section are among the more
isolated of the entire genus, because of their relatively slender and
subequally wide anterior parts, long neck and long and very slender
antennae and legs. The species described by Dr. Blaisdell, from
Mendocino Co., under the namefalstim (Pr. Acad. Nat. Sci., Phila.,
1902, p. 76), undoubtedly belongs to this section, but differs from
electum in its broader prothorax when compared with the elytra,
this proportion being nearly as in extensum, but it differs from ex-
tensum in its shorter elytra, these being two-thirds longer than wide
as in electum. The author, however, makes no allusion to a notably
long neck in falsum.

Group VII — bifasciatum
Subgenus Liocosmius nov.

In this very limited group the species are small, elongate, moder-
ately convex and highly polished throughout, having a subcordi-
form to obtrapezoidal prothorax and very smooth elytra, with
striation only visible toward the suture and sometimes wholly ob-
solete, except the sutural stria toward the apex. The striae are
generally wholly impunctate, but in one rather aberrant species are
very finely punctured as in the erasum section. The elytra always
have each two clearly defined pale spots, which assume various
forms in the different species.

The five species in my collection may be known as follows:

Prothorax obtrapezoidal; elytra each with three subsutural striae, which
are finely but distinctly punctured. Body black, polished, each
elytron broadly testaceous laterally in basal third, the pale area

44 MEMOIRS ON THE COLEOPTERA

extending inwardly along the base to the scutellum, and also with
a transverse pale fascia near apical third; epipleura and legs pale
flavate, the under surface black; head three-fourths as wide as the
prothorax, with well developed eyes, the shining sulci deep; antennae
slender, piceous, with paler basal joint, about as long as the elytra,
the medial joints between two and three times as long as wide; pro-
thorax transverse, nearly one-half wider than long, the sides rounded,
feebly oblique behind, becoming slightly sinuate at the right hind
angles; margins moderately reflexed; surface convex, punctate at
base, with very feeble impressions and fine stria; foveae rounded, very
deep, the carina distinct; elytra oblong, parabolic in apical two-
fifths, one-half longer than wide and two-fifths wider than the pro-
thorax, having two distinct punctate striae and a third — shorter and
very feeble, the second not quite entire, the fifth feeble and oblique;
foveae near basal and apical third. Length (cf) 3.35 mm.; width
1.25 mm. California (Gilroy Hot Springs, Sta. Clara Co.).

delectum n. sp.

Prothorax more nearly cordiform, the sides more sinuate basally, the
elytral striae in great part obsolete and, where visible, impunctate. . 2

2 — Prothorax about as long as wide and barely visibly wider than the
head. Body elongate, highly polished and smooth, piceo-rufous in
color, each elytron with a large triangular humeral pale spot, ex-
tending on the margin to basal third and, inwardly, enveloping the
scutellum, the humeral callus piceous, also with a pale fascia behind
apical third, which is gradually attenuated and bent backward to-
ward the suture; under surface pale piceous, the epipleura and legs
flavate; head with prominent eyes and moderate sulci; antennae
long, flavate, fully as long as the elytra, the medial joints fully three
times as long as wide; prothorax convex, rounded at the sides an-
teriorly, the sides moderately oblique from before the middle, be-
coming sinuate, parallel in basal sixth, the angles right and sharp;
impressions obsolete; stria very fine and greatly biabbreviated;
margins extremely finely reflexed; foveae large, smooth, moderately
deep, with a fine linear impression, the carina rather long and strong;
elytra ogival in apical third, fully one-half longer than wide and
four-fifths wider than the prothorax; sutural stria alone evident and
this only behind, the eighth deeply impressed as usual; foveae very
small, at two and five sevenths. Length (cf) 3.6 mm.; width 1.2
mm. California (Cloverdale, Sonoma Co.) hilare n. sp.

Prothorax wider than long and distinctly wider than the head 3

3 — Prothorax at base about as wide as at apex. Form narrowly oblong,
convex, polished, deep black, with feeble greenish or aeneous lustre,
each elytron with a large, transversely rounded external pale spot
behind the humeri and a transverse fascia at apical third, extending
to inner third; under surface black, the legs rufo-piceous; head four-
fifths as wide as the prothorax, the antennae black, piceous at base,
almost as long as the elytra, the medial joints between two and three
times as long as wide; prothorax two-fifths wider than long, the sides
rounded from apex to basal fourth, becoming parallel in basal fifth,
the angles very sharp; surface convex, the margins moderately re-

BEMBIDIIN^E 45

flexed, the impressions subobsolete, the stria moderately impressed,
not entire; foveae narrow and very deep, the carina strong; elytra
one-half longer than wide or less, nearly one-half wider than the
prothorax, strongly rounded behind, having very feebly glimpsible
traces of two or three sutural striae, the foveae before basal and at
apical third. Length 3^35 mm.; width 1.2 mm. California (one
typical example from an unrecorded locality; also one taken by the
writer at Lake Tahoe, agreeing well but with more obtusely rounded

elytra horni Hay w.

Prothorax distinctly narrower at base than at apex 4

4 — Form and size nearly as in the preceding, polished, smooth and nearly
black, the epipleura and legs flavate, each elytron with a flavate
spot behind the humeri, extending inward beyond the middle, its
base on the margin extending to the humeri and, at apical third, a
transverse fascia, not quite extending to the suture; the reflexed
margins are also paler piceous; head fully five-sixths as wide as the
prothorax, the antennae somewhat longer than the elytra, piceous,
becoming flavate basally, the medial joints not quite three times as
long as wide; prothorax much narrower, only a fifth wider than
long, the sides but very finely reflexed, strongly rounded anteriorly,
oblique and sinuate behind, becoming parallel in basal sixth, the
hind angles right and very sharp; surface convex, the stria fine, not
entire, the foveae very deep and adjoining the fine carina; elytra
one-half longer than wide and two-thirds to three-fourths wider
than the prothorax, rather sharply ogival in apical two-fifths; the
only striae evident, though feeble, are the first and second toward
tip, the eighth well impressed and entire; foveae at basal and apical
fourth. Length (c?1 9 ) 3.0-3.5 mm.; width 1.15-1.3 mm. Cali-
fornia (Sta. Barbara to Humboldt) and Nevada (Reno). Abun-
dant; twenty-three examples. [Ochthedromus mnndiis Lee.].

bifasciatum Mots.

Form and coloration nearly as in bifasciatitm but very much larger, and
with the longer antennae flavate throughout, blackish, with bluish
lustre anteriorly, the elytra pale castaneous, each with two flavate
spots very nearly like those of bifasciatum; epipleura and legs flavo-
testaceous; head four-fifths as wide as the prothorax, the sulci rather
broad but deep; antennae very slender, filiform, fully as long as the
elytra, the medial joints nearly four times as long as wide; prothorax
fully a third wider than long, the sides rather finely reflexed, evenly
rounded from apex to near basal fifth, where they become rapidly
sinuate and thence parallel for a very short distance before the angles,
which are rather sharp, though somewhat more than right; surface
nearly as in the preceding, except that the basal foveae are relatively
not so large or deep; elytra longer and more oval, parallel, with dis-
tinctly arcuate sides, three-fifths longer than wide and three-fourths
wider than the prothorax, not so narrowly rounded in about apical
third, the striation subsimilar, the foveae three in number, situated
before basal and behind apical fifth and at the middle. Length (9 )
4.0 mm.; width 1.6 mm. California (Sta. Barbara). Mr. Dunn.

festivum n. sp.

46 MEMOIRS ON THE COLEOPTERA

The above species, while obviously forming a well defined sub-
gene'ric unit of Bembidion, are remarkably isolated among them-
selves, and the possession of three setigerous discal foveae in the
case of festivum, instead of the two characterizing all the other
species, as well as constituting the general rule throughout the
genus, shows that this character cannot be used to define separate
subgeneric groups in the cases of rickseckeri, or scudderi, these
merely forming sections of Peryphus and Notaphus respectively.

Group VIII — tigrinum
Sugbenus Leuchydrium nov.

The single species of this group, described by LeConte under
the name tigrinum, has a very peculiar and distinctive habitus,
not only because of its pallid coloration, which is seen in certain
other forms of other families inhabiting like environments, but in
its parallel and very convex body, deep entire impunctate striae
and short thick antennae. The mentum tooth is small and very
obtusely rounded at tip. The tarsi are moderately long but unu-
sually thick. The two dorsal foveae of the elytra are obviously
attached to the third stria, as in the immediately preceding groups,
and by no means discal on the third interval as they are in the var-
iegatum group, to which the species was assigned by Hayward.
The small series in my collection I owe to the kindness of Mr.
Harford, who stated that they were found at night on the beaches
about Alameda, California.

Group IX — ustulatum
Subgenus Peryphus Steph.

Eighty-one species and subspecies of this subgenus, by far the
largest of the Eurasiatic groups, are recorded as valid in the Euro-
pean list; the North American components are slightly more nu-
merous, forming next to the largest of our subgenera. The species
are characterized in common by having the prothorax always dis-
tinctly narrower than the elytra and usually, but not always, sub-
cordiform, by their long slender antennae, by having the two or
three dorsal foveae of the elytra on or adjoining the third stria, and
by having all the striae distinctly or conspicuously punctate. The

BEMBIDIINJE 47

mentum varies from very broadly obtuse, in the nigrum — concolor
section, to obtusely triangular, as in the large majority of other
sections of the group. The coloration of the elytra is often uni-
form black or brown, but may have nubilous paler basal and sub-
apical areas, or may assume such special forms as seen in scopu-
linum, where the posterior elytral spots are almost as in certain
species of the as simile group, or in albidipenne, where the elytra
are pale, with dark apex and dark post-median fascia of irregular
form. Again the elytra may be black, with a posterior pallid fascia
as in liaplogonum Chd. (mannerheimi Lee.).

The species known to me may be assigned to eleven distinctly
circumscribed sections as follows, all having two dorsal fovese on
the elytra, excepting rickseckeri:

Prothorax as wide at base as at apex and sometimes wider 2

Prothorax always distinctly narrower at base than at apex 4

2 — Eighth stria rather distant from the margin, it, as well as the reflexed
margin, coarsely and conspicuously punctate; body small, convex,
the striae obliterated behind; legs rufous (nigrum} i

Eighth stria near the margin as usual, it, as well as the reflexed margin,
distinctly though not coarsely punctate; body more oblong and less
convex, with broader prothorax, the striae more or less abbreviated;
legs blackish (quadrulum) 2

Eighth stria impunctate, deep and near the margin as usual 3

3 — Body small, black and polished as a rule, the head small, the pro-
thorax nearly quadrate (concolor} 6

Body larger, diversified in color, polished, the head well developed;
striae entire or abbreviated, the seventh strong and entire to obso-
lete (transversale) 17

4 — Eighth stria distant from the margin, consisting of an unimpressed
series of very coarse punctures, the reflexed margin similarly punc-
tate; body small, convex and with abbreviated striae, resembling
nigntm superficially (brevistriatum} 29

Eighth stria near the margin, deeply impressed and impunctate as
usual 5

5 — Body small, polished, black; striae more or less abbreviated, the head
moderately large (californicum} 30

Body larger, convex, with relatively small head as a rule; striae more or
less abbreviated, the seventh wanting or very feeble. . (ustulatum) 37

Body similarly larger but usually broader and less convex than in the
ustulatum section and with small or moderate head, but differing
in having entire striae, the seventh always distinct and entire or
nearly so, the foveae usually rather more conspicuous.

(honestuni) 59

Body small or moderate, generally somewhat depressed and with the
head nearly as in the two preceding, the striae entire or nearly so,

48 MEMOIRS ON THE COLEOPTERA

the seventh barely traceable or wanting; elytra pale, sometimes
with a feeble clouded post-median fascia (sejnnctnm) 63

Body elongate and subparallel, markedly depressed as in the planatum
group, the head notably large; striae very coarse, entire, the punc-
tures small; seventh stria virtually obsolete (graiidiccps) 67

Body slender, small is size, depressed; head rather well developed; striae
entire, punctured, except apically; dorsal punctures three in num-
ber (rickseckeri)

I have not seen rickseckeri Hayw., and can therefore add nothing
further to the author's description (T. A. E. S., 1897, p. 85). The
discovery of three well developed foveae on the elytra of festivum
of the bifasciatum group, a species otherwise allied to that, as well
as to horni, and having identical elytral ornamentation, prevents
us from founding a distinct group of the genus upon rickseckeri.

I — Form oblong-suboval, convex, polished, black, virescent anteriorly,
aeneous on the elytra, which are just visibly pallescent posteriorly;
under surface piceous-black, the abdomen pallescent posteriorly, the
legs pale rufous; head ( 9 ) not quite as wide as an elytron, fully three-
fourths as wide as the prothorax, with distant moderate sulci; an-
tennas piceous, gradually pale basally, distinctly shorter than the
elytra, the medial joints between two and three times as long as
wide, distinctly longer than the ninth or tenth; prothorax trans-
verse, one-half wider than long, the base and apex equal and four-
fifths the maximum width, the rounded sides oblique behind, becoming
feebly sinuate near the angles, which are right and very sharp; mar-
gins narrowly reflexed; anterior impression subobsolete, the posterior
distinct; stria biabbreviated; foveae small, deep and linear, nearly
smooth, the carina very short; elytra parallel, nearly one-half longer
than wide, scarcely one-half wider than the prothorax, circularly
rounded behind; striaj wide, feebly impressed, ending at about api-
cal fourth, very coarsely, not closely punctate, the seventh as dis-
tinct as the others; foveae small, confused with the strial punctures
at basal and apical third. Length (9) 3.8 mm.; width 1.45 mm.

New Jersey nigrum Say

A- — Nearly similar but somewhat more elongate and with smaller head,
this being much narrower than an elytron (9), subequal (cf).
the antennae longer, especially in the distal joints, though evi-
dently shorter than the elytra; prothorax subsimilar, the elytra
a little longer, with rather deeper striae; color not so deep black,
piceous, the elytra more or less dark castaneous. Length (cf 9 )
3.8-4.2 mm.; width 1.45-1.6 mm. Illinois. Four examples.

facile n. subsp.

Form shorter and more ventricose than in nigrum, still deeper greenish-
black throughout above, the elytra nowhere at all paler; under sur-
face piceous-black, the legs pale rufous; head smaller than in nigrum,
three-fourths as wide as the prothorax, distinctly narrower than an
elytron (cf ), the sulci less distant; antennae longer and more slen-

BEMBIDIIN^E 49

der, similar in color, about as long as the elytra, the outer joints
not notably shorter than the medial and three times as long as wide
or nearly; prothorax much narrower and less transverse, two-fifths
wider than long, the sides much more feebly arcuate and subevenly
so from apex to just before the angles, where they become very
feebly sinuate, the angles right and very sharp; surface nearly simi-
lar; elytra shorter, not one-half longer than wide and more sharply
ogival in about apical third, two-thirds wider than the prothorax;
striae and punctures nearly similar, the former not quite so long.
Length (cf) 3.7 mm.; width 1.45 mm. Virginia. . . .morosum n. sp.

2 — Larger species, the prothorax but slightly inflated, the base but little
narrower than the maximum width 3

Smaller and rather more depressed species, the prothorax inflated ante-
riorly, with the sides more oblique behind, the base not over four-
fifths the maximum width 4

3 — Body elongate, oblong-suboval, rather convex, polished, black, with
moderate cupreo-aeneous lustre, the under surface black, the legs
piceous-black; head three-fourths as wide as the prothorax, not
quite as wide as an elytron, the moderate sulci widely separated,
the front feebly convex; antennae black, with piceous basal joint,
slender, three-fourths or more as long as the elytra, the medial
joints fully three times as long as wide; prothorax scarcely one-half
wider than long, the sides feebly arcuate, oblique and broadly, just
visibly sinuate in about basal half, the angles scarcely more than
right and very sharp; surface with distinct subbasal impression and
abbreviated stria, the fovese at outer fifth deep and linear, the carina
fine but rather long and distinct; elytra slightly more than one-half
longer than wide and about one-half wider than the prothorax,
parallel, ogival in apical third; striae scarcely at all impressed, the
punctures rather coarse, deep, separated by twice their diameters,
closer suturally, gradually extinct in about apical fourth, the striae
however faintly visible nearly to the apex; foveae at two-filths and
two-thirds. Length (cf 9 ) 3.8-4.5 mm.; width 1.35-1.65 mm.
Idaho (Cceur d'Alene), — YVickham quadrulum Lee.

Body broader, deep black, the anterior parts feebly viridate, the elytra
senescent; under surface and legs similar; head relatively somewhat
narrower, two-thirds as wide as the prothorax; antennae nearly simi-
lar; prothorax shorter and much more transverse, three-fifths wider
than long, the sides more rounded, not to about the middle but to
about basal fourth, where they become distinctly more sinuate, the
angles rather more than right but sharp; surface nearly similar, the
side margins rather more widely reflexed; elytra not quite one-half
longer than wide and two-fifths wider than the prothorax, much
more obtusely ogival at tip; striae broadly and deeply impressed,
with convex intervals, the coarse punctures more close-set, gradu-
ally obsolete at about apical fourth, the striae apically more distinct
than in quadrulum, the foveae nearer anterior and posterior third.
Length (9) 4.6 mm.; width i.S mm. Idaho (Coeur d'Alene),—

\Vickham tartareum n. sp.

T. L. Casey, Mem. Col. VIII, Oct. 1918.

50 MEMOIRS ON THE COLEOPTERA

4 — Elytral punctures fine. Body oblong-suboval, distinctly depressed,
bright blue-black in lustre throughout above, the under surface and
legs black; head fully three-fourths as wide as the prothorax, with
moderate and widely separated sulci; antennae black, moderately
slender, three-fourths as long as the elytra, the medial joints be-
tween two and three times as long as wide; prothorax one-half wider
than long, widest and laterally rather strongly rounded well before
the middle, the oblique sides in basal half nearly straight, faintly
sinuate near the angles, which are rather obtuse but not rounded;
surface smooth, the subbasal impression obsolete medially, the foveae
rather broadly impressed but deep and obliquely linear, near outer
fifth; carina short and feeble; elytra evidently less than one-half
longer than wide, nearly one-half wider than the prothorax, parallel,
obtusely rounded in less than apical third; striae barely at all im-
pressed, with nearly flat intervals, the small but deep punctures well
separated, especially in the female, becoming obsolete near apical
fourth, the striae however faintly subentire; foveae near two-fifths
and apical fourth, the anterior wholly wanting, however, on both
elytra of the male type, distinct in the female. Length (d71 9 ) 3-7
—3.9 mm.; width 1.4-1.5 mm. California (Truckee). Two exam-
ples callidum n. sp.

Elytral punctures coarser and deeper, nearly as in quadndum 5

5- — Form oblong-suboval, moderately convex, polished, greenish-black
above; under surface deep, the legs slightly less deep, black; head
three-fourths as wide as the prothorax and nearly as wide as an
elytron; surface nearly as in callidum; antennae black, almost as
long as the elytra, the medial joints between two and three times as
long as wide; prothorax slightly more than one-half wider than long,
widest near apical third; sides evenly rounded and inflated ante-
riorly, oblique and broadly, feebly sinuate behind, the angles slightly
obtuse but very sharp; surface with strong biabbreviated stria, dis-
tinct posterior impression, obsolescent at the middle, and well re-
flexed margins; foveae deep, slightly rugose and linear, at lateral
fifth, the carina long but fine; elytra oblong, parallel, broadly para-
bolic in apical third, not quite one-half longer than wide and barely
two-fifths wider than the prothorax; striae somewhat impressed, fine
and partially abbreviated behind, the punctures strong, moderately
coarse, well separated, smaller and closer in the sutural series, the
punctures gradually becoming obsolete at about apical third and
before the hind foveae, the foveae at two-fifths and three-fourths.
Length ( 9) 3.8—4.2 mm.; width 1.35—1.4 mm. Colorado (Boulder
Co., and also one taken by Prof. Snow) tritum n. sp.

Form more slender, similarly deep black and polished, the legs black;
head somewhat more than three-fourths as wide as the prothorax,
the black antennae nearly similar but evidently not as long as the
elytra, though with the medial joints nearly three times as long as
wide; palpi black as in the other species of this section; prothorax
much less transverse, less inflated anteriorly, two-fifths wider than
long, the sides broadly and moderately arcuate, not so oblique poste-
riorly and becoming faintly sinuate near the angles, which are more

BEMBIDIIN^E 51

obtuse but very sharp and subprominent at the apex; surface nearly
similar; elytra rather more than one-half longer than wide, parallel,
but with more arcuate sides, more gradually rounded basally, more
gradually parabolic behind in about two-fifths of the length, two-
fifths wider than the prothorax; striae entire, rather more impressed
and more strongly punctate, the punctures smaller posteriorly but
distinct to very near the apical margin; foveae stronger, before two-
fifths and behind two-thirds. Length (cf ) 3.7 mm.; width 1.25 mm.

Colorado. Levette collection segrotum n. sp.

6 — Striae entire 7

Striae slightly abbreviated externally 15

Striae greatly abbreviated, the seventh series very short 16

7 — Eastern species; prothorax subinflated anteriorly and strongly trans-
verse 8

Western species; prothorax parallel, less transverse and quadrate 10

8 — Color castaneous, the elytra and legs rufous. Under surface black-
ish-piceous; head three-fourths as wide as the prothorax, the sulci
moderate, widely separated; antennae red-brown, four-fifths as long
as the elytra, the medial joints two ( 9 ) to nearly three (cf ) times
as long as wide; prothorax three-fifths wider than long, the sides
rounded anteriorly, oblique posteriorly, becoming sinuate only at
the angles, which are right and very sharp; surface smooth, with
fine abbreviated stria, moderately reflexed margins and very feeble
transverse impressions, scarcely punctate at the foveae, which are
small, moderately deep and at fully outer fifth, the carina short
and feeble; sides of the base strongly oblique; elytra oblong, parallel,
obtusely parabolic in apical third and barely two-fifths wider than
the prothorax; striae moderately impressed and with rather strong
and widely spaced punctures, gradually becoming obsolete at about
apical fourth, the striae coarse and deep, however, to the apex;
foveae at basal and apical third. Length (cf 9 ) 42 mm.; width 1.7

mm. Maine inopinum n. sp.

Color black, with dark rufous legs 9

9 — Body oblong-oval and markedly convex, shining; head three-fourths
as wide as the prothorax, with rather narrow and deep sulci; antennae
longer, black, three-fourths as long as the elytra, the medial joints
nearly three times as long as wide and almost equal to the subapical;
prothorax fully three-fifths wider than long, the rounded sides con-
verging behind the middle, becoming sinuate at the right and very
sharp angles; surface nearly as in the preceding, except that the
foveae are longer and deeper, linear, the carina feeble; elytra nearly
as in the preceding but more convex, with the striae feebly impressed
and finer, the punctures similarly limited but smaller and much less
widely separated, the apical punctureless parts of the striae much
finer and less impressed; foveae more or less near basal and apical
third. Length (cf 9 ) 3.8-4.4 mm.; width 1.5-1.7 mm. New York

(Lake Champlain). Nine examples concolor Kirby

Body smaller, more briefly oblong and rather less convex than in con-
color, shining, black, not metallic, the legs obscure rufous; head rela-
tively smaller, nearly three-fourths as wide as the prothorax though

52 MEMOIRS ON THE COLEOPTERA

much narrower than an elytron, the sulci similar; antennae fuscous,
gradually obscure rufous basally, shorter than in concolor though
about three-fourths as long as the elytra, the medial joints equal
to the subapical and twice as long as wide; prothorax three-fifths
wider than long, relatively wider basally, the base wider than the
apex and but little less than the maximum width; sides broadly
arcuate, becoming parallel in about basal fourth, the angles right
and sharp; surface nearly similar but with more rugulosity in the
latero-basal region, the foveae deep, more oval, the carina moder-
ate; elytra less than one-half longer than wide, nearly two-fifths
wider than the prothorax, parallel, with more rapidly rounded hu-
meri, parabolic in apical two-fifths, the punctures and strife nearly as
in concolor, very much less coarse than in inopinum, the first, second
and fifth deep at apex as in concolor. Length (9 ) 3.7 mm.; width
1.45 mm. New York (Bluff Point, Lake Champlain).

consessor n. sp.

10 — Striae distinctly impressed and with close-set punctures n

Striae barely at all impressed and with well separated punctures, as in
quadrulum 12

II — Larger species, depressed, nigro-aeneous, shining; prothorax quad-
rate, slightly shorter than wide, the sides rounded anteriorly, almost
parallel behind, the hind angles right, finely carinate; stria fine;
transverse impressions deep, the foveae " bistriate" [the meaning of
this expression is not clear] and sparsely punctate; elytra elongate-
oval, emarginate at base, the striae closely punctate, the third bi-
punctate. Length 4.7 mm. New Mexico. Mr. Ulke. recticolle Lee.

Smaller species, moderately convex, polished, deep black, without metallic
lustre, the legs black; head nearly four-fifths as wide as the prothorax,
much narrower than an elytron; antennae black, slender, the joints
between two arid three times as long as wide; prothorax not quite a
third wider than long, the sides broadly and feebly arcuate submedi-
ally, feebly and equally oblique and nearly straight anteriorly and
posteriorly, becoming broadly, feebly sinuate in about basal fourth,
the angles right and sharp; surface with fine incomplete stria, obso-
lete anterior and distinct posterior transverse impression, the mar-
gins moderately reflexed; foveae punctate, rather large, moderately
deep and sublinear, the carina fine and feeble; elytra three-fifths
longer than wide and one-half wider than the prothorax, parallel,
with feebly arcuate sides, broadly rounding at the humeri, obtusely
ogival in apical third; striae rather deeply impressed to the apex,
the punctures strong, moderately coarse and very close-set, gradu-
ally disappearing toward apex, the foveae at two-fifths and three-
fourths. Length (9 ) 3.85 mm.; width 1.45 mm. Nevada.

oblatum n. sp.

12 — Strial punctures very fine and feeble. Body rather slender, elongate-
suboval, very moderately convex, shining and deep black through-
out, the legs black; head fully three-fourths as wide as the prothorax
and as wide as an elytron to slightly less; palpi black; antennae
black, slender, three-fourths as long as the elytra, the medial joints
very nearly three times as long as wide; prothorax a fourth to third

BEMBIDIIN/E 53

wider than long, parallel, the sides feebly arcuate, slightly oblique
behind and just visibly sinuate toward the angles, which are sharp
and but little more than right; surface smooth, minutely, feebly
punctulate at base, with incomplete stria, very feeble anterior and
marked posterior impression, the foveae shallow, rather finely linear,
outside of lateral fourth, the carina fine and feeble; elytra parallel,
with feebly arcuate sides, broadly rounding basally, subcircularly
rounded at apex, three-fifths longer than wide and nearly one-half
wider than the prothorax, the striae well impressed, rather coarse
but with small punctures, which become gradually obsolescent be-
hind the middle; foveae distinct, at three-sevenths and three-fourths.
Length (cf 9 ) 3-4~4-4 mm.; width 1.2-1.5 rnm. California (St.
Helena and Sta. Rosa). Thirteen specimens. . tetragonoderum Chd.

Strial punctures larger and more distinct 13

13 — Upper surface depressed, the striae feebly impressed and with punc-
tures but little larger than in the preceding. Body shorter than in
tetragonoderum, similarly deep black throughout, the head similar
but relatively somewhat larger; antennae slender, relatively longer,
being but little shorter than the elytra, the medial joints about three
times as long as wide; prothorax shorter, two-fifths wider than long,
the sides more strongly rounded anteriorly, somewhat more oblique
and broadly, just visibly sinuate in about basal half, the angles
similar; surface nearly similar but with the posterior impression
feebler, the punctulate foveae broadly sublinear and very shallow,
the carina fine and very feeble; elytra much shorter, fully one-half
longer than wide, two-fifths wider than the prothorax, parallel, with
straighter sides, more rapidly rounded at the humeri, obtusely, cir-
cularly rounded at apex; punctures gradually obsolescent behind
the middle; foveae at two-fifths and three-fourths. Length (cf ) 3.4
mm.; width 1.3 mm. Nevada (Reno) avidum n. sp.

Upper surface distinctly convex, the striae more or less deeply impressed,
the punctures stronger and more widely separated in the series ... 14

14 — Body narrower and elongate-suboval, shining and deep black
throughout, the upper surface feebly subaeneous; legs black; head
moderate, three-fourths as wide as the prothorax but distinctly nar-
rower than an elytron; antennae black, three-fourths as long as the
elytra, the medial joints not quite three times as long as wide; pro-
thorax a third or more wider than long; base evidently wider than
the apex; subparallel, the sides broadly arcuate anteriorly,- barely
at all converging and broadly, just visibly sinuate posteriorly, the
angles nearly right and very sharp; surface smooth, with fine abbre-
viated stria and feeble, medially interrupted posterior impression,
the foveae smooth, small, obliquely sublinear and deep, the carina
very feeble, short and almost obsolete; elytra four-sevenths longer
than wide, nearly one-half wider than the prothorax, parallel, the
sides more rapidly rounding at base than in tetragonoderum, subsim-
ilar at apex, the punctures obsolescent near posterior third; foveae
at two-fifths and three-fourths. Length (cf 9 ) 3.8-4.0 mm.; width
1.4-1.5 mm. Nevada (locality unrecorded). Three specimens.

pertinax n. sp.

54 MEMOIRS ON THE COLEOPTERA

Body stouter than in the preceding, similar in its deep black polished
surface, the anterior parts more greenish; head nearly similar, much
narrower than an elytron; antennae black, nearly three-fourths as
long as the elytra, the joints similarly elongate; prothorax scarcely
a third wider than long, distinctly wider at base than apex, the sides
not strongly arcuate anteriorly but more so than in pertinax, and
rather more oblique and visibly sinuate in about basal half; stria fine
but well impressed, not entire; surface feebly punctulate or rugulose
at base, the posterior impression obsolete medially as a rule; foveae
linear, moderately deep, the carina very fine and feeble; elytra
broader, one-half longer than wide or less, parallel, more sinuate at
base, the sides rather rapidly rounding basally, the apex broadly
parabolic, not quite one-half wider than the prothorax; punctures
more or less distinct in the striae to the extreme apex; foveae near
basal third and apical fourth. Length (cf 9 ) 4.2-4.7 mm.; width
1 .6-1. 8 mm. Utah (Provo), — Wickham. Four examples.

umbraticola n. sp.

15 — Form rather narrow and elongate, moderately convex, deep black,
with feeble subaeneous lustre above; legs black; head fully three-
fourths as wide as the prothorax, equal in width to an elytron, the
sulci remote and parallel as usual; antennae black, fully three-fourths
as long as the elytra, the medial joints not quite three times as long
as wide; prothorax somewhat less than one-half wider than long;
base barely wider than the apex, the sides well rounded, distinctly
oblique behind the middle, becoming slightly sinuate basally, the
angles more than right but subprominently sharp; surface smooth,
with fine incomplete stria, the moderate posterior impression sub-
obsolete medially; foveae finely rugulose, briefly linear medially and
rather deep, the carina not very short but fine and feeble; elytra
parallel, four-sevenths longer than wide, two-fifths wider than the
prothorax, gradually obtusely ogival behind, the'striae well impressed
suturally, distinctly punctate, the punctures well separated, obso-
lescent near the apex suturally, near apical third laterally, where
the striae become very fine and feeble though generally traceable
throughout; foveae near two-fifths and before three-fourths. Length
(cf 9 ) 3.8-4.0 mm.; width 1.4-1.55 mm. New Mexico (Sta. Fe
Canon, Jemez Springs and Las Vegas). Six specimens. Lake
Superior, — LeConte longulum Lee.

Form not quite so narrow, elongate-suboval, rather convex, polished,
black, the upper surface with feeble cupreous lustre; legs black; head
rather small, much narrower than an elytron; antennae black, slen-
der, fully three-fourths as long as the elytra, the medial joints three
times as long as wide; prothorax differing much in form, parallel,
less than a third wider than long, the sides evenly rounded from
apex, becoming straight at base, the angles more than right; widest
barely before the middle; transverse impressions feeble, the anterior
unusually near the apex; foveae rather deep, oblique and sublinear,
the carina barely traceable; elytra three-fifths longer than wide,
one-half wider than the prothorax, parallel, rounded in apical third,
the sides nearly straight, rapidly rounding basally; striae, punctures

BEMBIDIIN.E 55

and foveae nearly as in the preceding. Length (9 ) 4.25 mm.; width

1.65 mm. New Mexico (Las Vegas) porrectum n. sp.

16 — Form oblong-suboval, rather convex, deep polished black, the legs
black; head moderate, not quite as wide as an elytron; antennae
unusually short for the present subgenus, three-fourths (cf ) to two-
thirds ( 9 ) as long as the elytra, deep black, the medial joints barely
twice as long as wide; prothorax a fifth to third wider than long,
subparallel, the sides well rounded anteriorly, oblique in about basal
half, becoming very feebly sinuate near the angles, which are sharp
and slightly more than right; margins unusually finely reflexed; sur-
face convex, smooth, with feeble transverse impressions and incom-
plete stria; foveae nearly smooth, sublinear, deep, beyond lateral
fourth, the carina wanting; elytra fully one-half longer than wide,
one-half wider than the prothorax, parallel, the feebly arcuate sides
rapidly rounded at base, parabolic behind; striae impressed sutur-
ally, the punctures strong and well separated, both striae and punc-
tures wholly obsolete in apical third suturally, to half or more later-
ally; foveae near basal and apical third. Length (cf 9 ) 3.3-4.2 mm.;
width 1.25-1.4 mm. California (northern coast regions). Eleven

specimens humboldtense Blaisd.

17 — Striae of the elytra entire in great part 1 8

Striaa abbreviated more or less at apex. 26

1 8 — Body depressed above, as much so as in the planatum group. Head
and pronotum black, with greenish lustre; elytra uniformly pale cas-
taneous throughout; under surface rufo-piceous, the abdomen and
legs rufous; apical margin of each segment of the former black; head
four-fifths as wide as the prothorax, not quite as wide as an elytron,
shining, the sulci wide and deep'; antennae red-brown, testaceous at
base, nearly three-fourths as long as the elytra, the medial joints
more than three times as long as wide; prothorax not quite one-half
wider than long, the sides widely and strongly reflexed, rounded
anteriorly, converging and distinctly sinuate behind, the angles
right; stria fine but well impressed, subentire; foveae large, slightly
rugulose, deeply and linearly impressed medially, the carina rather
long but fine; elytra barely one-half longer than wide, one-half wider
than the prothorax, obtusely ogival behind, the sides parallel, very
feebly arcuate, rapidly rounded basally, the humeri widely exposed
and transverse at base; striae deeply impressed, finely, rather feebly
punctate, the seventh wholly wanting, the sixth obsolete, barely
traceable as a very fine line under certain angle of reflection. Length
(9 ) 5.2 mm.; width 2.0 mm. New York (Catskill Mrs.).

vulsum n. sp.

Body similar in depression and coloration to the preceding but narrower
and more parallel, with relatively much larger prothorax, polished;
head well developed, with prominent eyes and deep sulci; antennae
piceous, the two basal joints testaceous, long, slender, filiform, not
quite as long as the elytra, the medial joints nearly four times as
long as wide; prothorax nearly as in vulsum but relatively much
larger and barely two-fifths wider than long, differing greatly in
having the oblique sides posteriorly not sinuate, the basal angles

56 MEMOIRS ON THE COLEOPTERA

slightly more than right but minutely subprominent; sides broadly
reflexed as in the preceding; elytra elongate, two-thirds longer than
wide, two-fifths wider than the prothorax, the five striae rather less
deeply impressed than in vnhum and less coarse, the punctures less
concealed and more evident, though but little coarser. Male with
the anterior tarsi rather long, feebly and gradually tapering, the
basal joint longer than wide, much less than twice as wide as the
second and with the inner angle of both prolonged; fifth joint dis-
tinctly longer than the three preceding. Length (d71) 4.5-5.3 mm.;
width 1.7-1.75 mm. New Jersey (Oak Ridge), — Shoemaker.

fiUcorne n. sp.

Body always distinctly convex, though moderately as a rule 19

19 — Upper surface wholly black, non-metallic and polished; under sur-
face more piceous black, the legs dark rufous. Head well developed,
with unusually prominent eyes, fully four-fifths as wide as the pro-
thorax and even somewhat wider than an elytron, the sulci broad,
deep and shining; antennae three-fourths as long as the elytra,
blackish, dark rufous at base, the medial joints not quite three times
as long as wide, obconic; prothorax rather more than one-half wider
than long, the sides almost evenly arcuate from the very blunt apical
to the basal angles, the latter obtuse but sharp and minutely prom-
inent; margins well reflexed basally, very finely apically; surface as
in the preceding but more convex, the stria not entire, the trans-
verse impressions fine and feeble and broad and shallow respectively
near apex and base; elytra fully one-half longer than wide, two-fifths
wider than the prothorax, in form nearly as in v id sum but narrower
and more convex, the striae moderately impressed and punctate, the
seventh wanting, the sixth distinct as usual basally but obso-
lescent posteriorly; foveae similarly near two-fifths and three-fourths.
Length (cf 9) 4.4-5.4 mm.; width 1.6-2.0 mm. Pennsylvania (X.

Cumberland), — A. B. Champlain champlaini n. sp.

Upper surface not wholly black, the elytra always with pale areas. . . . 20

20 — Elytra black, frequently pallescent at base, or with this pale area

limited to a small spot at the base of each; subapically, there is

always a nubilous bioblique pale fascia 21

Elytra in great part pale, with more or less definite broad median dark

fascia 22

21 — Legs very pale, uniform testaceous throughout. Body oblong, mod-
erately convex, shining, greenish-black; under surface black, the
abdomen often partially rufous; head moderate, three-fourths as
wide as the prothorax and much narrower than an elytron, the sulci
wide, deep and shining, the eyes notably prominent; antennae piceo-
rufous, paler basally, long and slender, four-fifths as long as the
elytra, the medial joints between three and four times as long as
wide; prothorax a third wider than long, the sides broadly rounded,
oblique basally, becoming broadly, very feebly sinuate toward the
angles, which are obtuse though sharply subprominent; surface
punctulate basally, the foveae small, deep, oval^the carina very fine;
elytra three-fifths longer than wide, three-fourths wider than the
prothorax, oblong, very gradually rounded behind; striae rather

BEMBIDIIN/E 57

deeply impressed, not coarsely, rather closely punctate, the seventh
obsolescent, barely traceable throughout the length; foveae near
basal and apical third; epipleura testaceous to black. Length (cf 9 )
7.0—8.0 mm.; width 2.8—3.0 mm. California (coast regions north
of San Francisco). Abundant. Thirteen specimens.

haplogonum Chd.

Legs testaceous, the femora piceous-black, nubilously pallid at tip.
Body much smaller and narrower, similar in coloration; head and
antennae nearly similar, the latter more slender and no.t quite so
long, the eyes less prominent; prothorax shorter, almost one-half
wider than long, the oblique sides posteriorly becoming more sinu-
ate, parallel for a short distance before the angles, which are right
and sharp; surface with very feeble impressions and incomplete
stria, the foveae with the deep part longer, more oblique and less
well defined, the carina very short and fine; margins well reflexed
basally, finely so apically; elytra similar but narrower, rather more
than three-fifths longer than wide, one-half wider than the prothorax,
the striae and punctures finer, less impressed, the seventh more dis-
tinct; foveae similar. Length (9) 6.4 mm.; width 2.25 mm. Cal-
ifornia (Marin Co.). A single example marinicum n. sp.

22 — Prothorax notably short and transverse 22

Prothorax but slightly transverse 23

22 — Form broadly suboblong, very moderately convex, shining, the upper
surface black, with greenish lustre, the elytra obliquely pale at base
and with a transverse suturally sinuate fascia behind apical third,
not prolonged on the suture; under surface black, the epipleura par-
tially pale, the legs testaceous; head moderate, much narrower than
the prothorax or an elytron, the eyes only moderately prominent;
antennae slender, blackish, testaceous basally, the medial joints fully
three times as long as wide; prothorax one-half to three-fifths wider
than long, the oblique sides posteriorly broadly and but just visibly
sinuate toward the angles, which are obtuse but with their apex
minutely acute and prominent; base arcuate; posterior impression
broad and distinct; margins strongly reflexed basally, finely api-
cally as usual in this section; foveae rugulose, large, sublinear, deep,
nearly one-fourth the total length, the carina very fine; elytra ob-
long, well rounded behind, parallel, one-half wider than the pro-
thorax, the striae rather fine, not impressed, except internally, rather
finely punctate, the punctures widely separated; seventh stria barely
traceable as a series of very remote and minute punctulation; foveae
near basal third and apical fourth. Length (cf 9 ) 6.4-7.0 mm.;

width 2.4-2.8 mm. Michigan (Marquette) transversale Dej.

Form somewhat as in transversale but with still shorter prothorax and
longer elytra, the latter almost entirely ochreous, with a small faint
post-scutellar cloud on each, and with a very faint nubilous dark
fascia just behind the middle, prolonged somewhat posteriorly at
the suture, the apex also faintly blackish; epipleura and legs testa-
ceous; head nearly as in the preceding, the antennae colored simi-
larly and very slender, longer, four-fifths as long as the elytra;
prothorax two-thirds to three-fourths wider than long, the arcuate

58 MEMOIRS ON THE COLEOPTERA

sides becoming more oblique behind, abruptly more sinuate just
before the angles, which are right, very sharp and prominent; sur-
face nearly similar but the margins are more equally reflexed through-
out the length; elytra oblong, three-fifths longer than wide, two-
fifths wider than the prothorax, more rapidly and obtusely rounded
at tip; striae rather fine, just visibly and evenly impressed through-
out the width, the seventh a fine loose entire series; punctures every-
where notably fine and separated by more than twice their diam-
eters; foveae small, near two-fifths and two-thirds. Length (c? 9).
6.0-6.3 mm.; width 2.4—2.6 mm. Wyoming (Cheyenne), — AYickham.

perspicuum Lee.

23 — Elytral punctures strong and widely separated in the series — by
nearly twice their diameters as a rule. Body smaller and rather
more depressed than in the three following, black, with subaeneous
lustre, the neck testaceous, the elytra testaceous, with a rather
sharply defined transverse black fascia just behind the middle,
somewhat prolonged suturally; under surface black, the epipleura
and legs testaceous; head fully three-fourths as wide as the pro-
thorax, the eyes moderately prominent; antennae long, slender and
testaceous; prothorax a third wider than long, widest at two-fifths
from apex, the sides rounded, oblique behind, becoming parallel for
a short distance from the angles, which are right; stria strongly
impressed, extending between the feeble impressions; foveae large,
punctulate, with a deeper central part, the carina very short, not
attaining the angles; elytra oblong, parallel, circularly rounded be-
hind, three-fifths longer than wide and one-half wider than the pro-
thorax; striae moderate, the seventh a subobsolete series of very
minute punctules; foveae at three-sevenths and three-fourths.
Length (cf) 6.5 mm.; width 2.35 mm. Colorado (Canon City), —

Wickham sarpedon n. sp.

Elytral punctures close-set in the series 24

24 — Head smaller, with moderately prominent eyes, much narrower than
an elytron. Body short, rather convex, greenish-black, the neck
barely at all pallescent; elytra flavo-testaceous, with a broad and
nubilous dusky median fascia, longest toward the suture; under
surface black, the abdomen more or less rufescent, the legs pale;
head scarcely three-fourths as wide as the prothorax, the antennae
long, slender, fuscous, pale basally; prothorax a third wider than
long, widest barely before the middle, the sides broadly rounded,
generally quite to the angles, which are minutely prominent and
very sharp; margins strongly reflexed even apically; surface sparsely
punctate basally, having feeble transverse impressions and a very
fine and scarcely impressed stria between them; foveae elongate,
linear, moderately deep, the carina very short, at the angles as usual;
elytra but little over one-half longer than wide, parallel, broadly
ogival at apex, two-thirds wider than the prothorax, the striae mod-
erate, subequally and slightly impressed throughout, the punctures
very moderate, separated by their own diameters or less, the seventh
stria barely traceable and in part only by a very fine series; foveae
small, at two-fifths and two-thirds. Length (d71 9 ) 6.7-7.6 mm.;

BEMBIDIIN/E 59

width 2.35-2.9 mm. New Mexico (Jemez Springs and Las Vegas)
and Utah (St. George), — Wickham. Abundant. Seventeen speci-
mens acomanum n. sp.

Head larger, subequal in width to an elytron 25

25 — Form elongate, rather convex, piceous-black, with greenish lustre,
the neck and a few small spots near the sides of the pronotum nubi-
lotisly paler, the elytra obscure testaceous, the broad medial band
so feeble and nubilous as to be barely traceable; under surface black,
the abdomen partially rufous, the epipleura rufous, the legs pale
flavo-testaceous; head fully four-fifths as wide as the prothorax,
with moderately prominent eyes, the antennae fuscous, paler basally,
long and slender; prothorax parallel, about a fourth wider than long,
the sides broadly arcuate and more feebly so than usual, becoming
very feebly sinuate toward the hind angles, which are rather more
than right but neither blunt nor markedly prominent; surface nearly
as in the preceding; elytra three-fifths longer than wide and more
than two-thirds wider than the prothorax, parallel, with broadly
arcuate sides, very gradually and strongly rounded behind; striae
rather coarse and impressed, the punctures strong and notably close-
set, the seventh stria virtually wanting; foveae before anterior and
at posterior third. Length (9) 7-3 mm.; width 2.65 mm. Ari-
zona (Tugson) excursion n. sp.

Form less elongate, similarly convex and shining, black, with greenish
lustre, the elytra yellow-brown, with a broad and moderately def-
inite black median fascia, prolonged slightly medially behind; under
surface piceous-black, the legs flavate; head three-fourths as wide
as the prothorax, with remarkably prominent eyes, the antennae
long, slender, fuscous, paler basally; prothorax shorter than in the
two preceding, two-fifths wider than long, the sides subprominently
rounded before the middle, oblique and straighter anteriorly and
posteriorly, slightly sinuate just before the basal angles, which are
scarcely more than right, sharp and evidently prominent; surface
nearly as in the preceding, the carina obsolete or indistinct; elytra
parallel, with scarcely arcuate sides, circularly rounded in apical third,
one-halt longer than wide, barely one-half wider than the prothorax;
striae abrupt and scarcely at all impressed, the seventh series fine
but usually distinct and entire; punctures small and close-set; foveae
at two-fifths and two-thirds. Length (c? 9 ) 5.8-7.0 mm.; width
2.15-2.75 mm. California (coast regions from San Francisco north-
ward. San Diego, — LeConte). Abundant. Thirteen specimens.
[Ochthedromns mannerheimi \\ Lee.?] erosum Mots.

26 — Body notably depressed, the thoracic base much wider than the
apex. Polished black, with but faint metallic lustre anteriorly, the
elytra uniform pale castaneous in color; under surface black, the
legs pale rufous; head three-fourths as wide as the prothorax, much
narrower than an elytron, the shining sulci coarse and very deep;
eyes large but not very prominent; antennae long, slender, fuscous,
paler basally, almost as long as the elytra, the medial joints three
times as long as wide, cylindric; prothorax a fourth wider than long,
the sides evenly and rather strongly rounded, oblique and feebly

60 MEMOIRS ON THE COLEOPTERA

sinuate basally, the angles right, sharp and very prominent; surface
smooth and impunctate throughout, the impressions obsolescent,
the stria fine, greatly biabbreviated ; foveae smooth, very deep, elon-
gate-oval, the carina very faint, subobsolete; elytra parallel, three-
fifths longer than wide, two-thirds wider than the prothorax, ob-
tusely ogival in about apical third; striae barely at all impressed, the
sixth obsolete behind about the middle, the seventh wholly wanting;
punctures moderate; foveae at two-fifths and two-thirds. Length
(9 ) 6.0 mm.; width 2.4 mm. New Mexico (somewhere on the road
between Ft. Wingate and Jemez Springs), — \Voodgate.

badiipenne n. sp.
Body very moderately convex as in erosum; thoracic base always at

least somewhat wider than the apex 27

27 — Elytra and upper surface deep bluish or greenish black throughout,
the neck sometimes faintly pallescent. Body oblong, highly pol-
ished throughout, black beneath, the legs pale rufous; head rather
small, not three-fourths as wide as the prothorax and very much
narrower than an elytron, with only moderately prominent eyes and
deep sulci; antennae long, slender, fuscous, pale basally; prothorax
two-fifths wider than long, the sides strongly rounded anteriorly,
long and oblique posteriorly, becoming sinuate only at the angles,
which are sharp and minutely prominent; surface smooth, the im-
pressions and stria nearly as in the preceding, the posterior impres-
sion feeble but evident, the deep foveae nearly similar but less abrupt
and slightly rugulose; elytra one-half longer than wide to somewhat
more, the parallel sides feebly arcuate, two-thirds wider than the
prothorax, convex, the striae rather coarse and deeply impressed,
strongly punctate, the seventh fine and obsolescent, sometimes feebly
traceable; foveas at two-fifths and two-thirds. Length (c/1 9 ) 6.4-
7.2 mm.; width 2.3-2.6 mm. New Mexico (Jemez Springs, Las

Vegas and other parts of the Rio Grande Valley) lugubre Lee.

A — Similar to hignbre but broader, the prothorax only a fourth wider
than long, the oblong elytra longer, three-fifths longer than wide,
the striae more abbreviated, the sixth only visible to about the
middle, the seventh wanting. Length (cf 9 ) 6.5-7.1 mm.; width
2.3-2.8 mm. Arizona (Tucson). La Veta, Colo., and San Diego,

Cal., — LeConte stabile Lee.

B — Similar to lugubre but smaller and especially narrower, differing
also in the prothorax, which, though similarly transverse and
rounded laterally, has the posterior sinus of the sides much
stronger, the sides becoming parallel for a considerable distance
before the right and very sharp angles; elytral striae nearly simi-
lar but less impressed and with the punctures less close-set.
Length (o* 9 ) 6.2-6.5 mm.; width 2.2-2.4 mm. Arizona (prob-
ably near the southern boundary) vafrum n. subsp.

Elytra and upper surface deep black, the neck feebly pallescent basally,
the elytra bluish-black, with a conspicuous bioblique testaceous sub-
apical fascia, prolonged on the suture to the apex. LTnder surface
black, the legs testaceous; head fully four-fifths as wide as the pro-
thorax, not quite as wide as an elytron; antennae long, slender, the

BEMBIDIIN.E 61

apices of the joints beyond the second infuscate; prothorax barely
a fourth wider than long, the sides evenly rounded to within a short
distance of the base, there rapidly strongly sinuate and parallel
thence to the angles, which are right and very sharp; surface with
feeble impressions and fine incomplete stria, the foveae sparsely
punctate, deep and linear, beyond lateral fifth, the carina obsolete;
margins strongly reflexed, finely so apically; elytra fully three-fifths
longer than wide and three-fourths wider than the prothorax, sub-
parallel, gradually ogival in apical two-fifths; striae rather coarse
but barely at all impressed, strongly, rather closely punctate, the
sixth obsolete a little behind the middle, the seventh wholly obso-
lete; foveae near basal and apical third. Length (9) 6.5 mm.;
width 2.5 mm. Arizona (probably southern). One example.

canonicum n. sp.

Elytra in great part pale in color, usually variegated somewhat as in
erosnm or iistnlatnm 28

28 — Elytra pale testaceous throughout, without darker maculation.
Anterior parts polished, black, the neck rufescent; under surface
piceous-black, the abdomen in great part rufescent, the legs pale
testaceous; head well developed and with prominent eyes, though
not quite as wide as an elytron, more than three-fourths as wide as
the prothorax, the sulci moderately deep or wide; antennae long and
slender, fusco-testaceous, clearer basally; prothorax scarcely more
than a fourth wider than long, the sides rounded, oblique in nearly
basal half, becoming very moderately sinuate toward the angles,
which are barely more than right but sharp and subprominent;
surface with very evident transverse impressions and a fine stria
between them; foveae nearly smooth, long, deep and linear, the
carina obsolete; margins as in the preceding and most others of
this section; elytra three-fifths longer than wide and four-fifths wider
than the prothorax, broadly ogival in about apical third, parallel,
with feebly arcuate sides, rapidly rounded at the humeri; striae un-
impressed, feebly so suturad; punctures strong, separated by their
diameters, smaller and close in the sutural striae; sixth stria extend-
ing three-fifths, the seventh completely wanting; foveae near basal
and before apical third. Length (cf) 6.8 mm.; width 2.65 mm.
Utah (St. George), — Wickham. Two exactly similar specimens.

retectum n. sp.

Elytra pale testaceous, angularly dark at the scutellum and with a bi-
oblique paler subapical fascia, which is bordered anteriorly by a
nubilous dark fascia, the apex behind the pale fascia also blackish.
Anterior parts black, with subaeneous lustre, the neck pale at base;
under surface black, the abdomen feebly paler at apex, the legs tes-
taceous; head and antennae nearly as in the preceding, the eyes not
quite so large; prothorax shorter, two-fifths wider than long, the
sides strongly rounded, less so and oblique behind, becoming parallel
for a very short distance from the angles, which are right, sharp and
slightly prominent; surface nearly as in the preceding, the carina,
however, sometimes distinct though fine; elytra one-half longer than
wide and fully one-half wider than the prothorax, gradually obtusely

62 MEMOIRS ON THE COLEOPTERA

ogival behind; striae deeply impressed suturad, scarcely so laterad,
with rather strong and somewhat ununiform punctures, the sixth
stria extending three-fifths, the seventh barely traceable as a loose
series of very minute punctules; fovese at two-fifths and two-thirds.
Length (cf 9 ) 5.7-6.3 mm.; width 2.2-2.4 mm- New Mexico
(Jemez Springs and on the road to Fort YVingate) and Colorado.
Twelve specimens animatum n. sp.

Elytra castaneous, ornamented, as in ustnlatum, with a nubilous elongate
humeral paler area on each, and a common bioblique subapical fas-
cia, which is also nubilously defined. Body moderately stout and
convex, polished, piceous-black, with feeble lustre anteriorly, be-
neath piceous, the abdomen in great part rufous, the legs flavo-tes-
taceous; head rather small, with deep sulci and moderately prom-
inent eyes, the antennae long and slender, fusco-testaceous, clearer
basally; prothorax large, barely a fifth wider than long, the sides
subevenly rounded to the basal angles, which are minutely prom-
inent and sharp; margins strongly reflexed basally, very finely near
the apex; surface smooth, the anterior impression fine and angular,
the posterior large and distinct, the stria between them fine; foveee
deep and long, linear, the carina obsolete; elytra nearly two-thirds
longer than wide, only one-half wider than the prothorax, parallel,
with very feebly arcuate sides, gradually parabolic behind; striae
rather deeply impressed suturad, unimpressed laterad, having unu-
sually coarse, deep and well separated punctures, the sixth extend-
ing three-fifths, the seventh completely wanting; oblique apical part
of the fifth stria short and not conspicuous; foveae deep, near two-
fifths and two-thirds. Length (c? 9 ) 6.8-7.4 mm.; width 2.75-2.8
mm. Colorado and New Mexico (Jemez Springs), .pernotum n. sp.

29 — Body small in size, convex, ventricose, polished, piceous-black, the
legs pale rufous; head moderate, with narrow shining sulci and well
developed eyes', nearly four-fifths as wide as the prothorax; antennae
slender, fuscous, paler basally, three-fourths as long as the elytra,
the medial joints between two and three times as long as wide; pro-
thorax a third to two-fifths wider than long, the sides strongly
rounded, converging basally and becoming parallel for a short dis-
tance before the angles, which are right; surface convex, very smooth,
with feeble impressions and fine and much abbreviated stria; foveae
smooth, small, oval and very deep, close to the rather distinct carina;
elytra oblong, two-fifths longer than wide, two-thirds wider than
the prothorax, rapidly and obtusely ogival in apical third, the striae
unimpressed, consisting of rows of very coarse and widely separated
punctures, obsolete in apical third, the eighth consisting of a row of
very large deep punctures, notably distant from the margin, feebly
impressed, becoming unimpressed basally, the marginal stria also
deep and strongly punctured; foveae at apical and before basal third.
Length (cT 9 ) 3-35~3-8 mm.; width 1.25-1.4 mm. California (coast
regions from San Francisco Bay northward). Thirteen specimens.

brevistriatum Hayw.

30 — Elytral striae very much abbreviated, extending as a rule barely be-
yond the middle, the eighth less widely separated from the margin. .31

BEMBIDIIN^E 63

Elytral striae but slightly and generally only in part abbreviated 32

31 — Body black, highly polished, with very feeble subaeneous lustre;
under surface piceous, the legs rufous; head fully four-fifths as wide
as the prothorax and as wide as an elytron, the antennae slender, fus-
cous, gradually pale basally, as long as the elytra, the medial joints
not quite three times as long as wide; prothorax scarcely a filth wider
than long, rounded laterally in about apical half, oblique posteriorly,
the sides becoming gradually parallel near the right angles; surface
very smooth and convex, with distinct transverse impressions, the
stria between the two rather strong; foveae elongate-oval, very deep
and near the long and rather distinct carina; margins somewhat
finely reflexed; elytra one-half longer than wide and nearly three-
fifths wider than the prothorax, parallel, with broadly and feebly
arcuate sides, gradually parabolic behind; striae not definitely im-
pressed, consisting of rows of rather coarse, widely separated punc-
tures, becoming obsolete just behind the middle, the seventh row
equally strong but becoming obsolete at basal third; foveae at an-
terior and posterior third. Length (cf) 34 mm.; width 1.2 mm.
California (Sta. Ana Canon), — Wickham calif ornicum Hayw.

Body similar in coloration, but with the legs darker or more piceo-rufous,
the form more abbreviated; head larger, four-fifths as wide as the
prothorax and fully as wide as an elytron, the sulci similarly deep,
smooth and parallel; antennae shorter and thicker, not quite as long
as the elytra, blackish, piceous basally, somewhat thickened dis-
tally, the medial joints barely twice as long as wide; prothorax very
much shorter and strongly transverse, one-half to three-fifths wider
than long, the sides anteriorly still more strongly arcuate, very con-
vergent in about basal half, becoming parallel in basal fourth or
fifth, the angles right; surface throughout, as well as the foveae,
nearly as in the preceding, the basal margin somewhat rugulose;
elytra shorter, not quite one-half longer than wide and less than
one-half wider than the prothorax, gradually narrowed and strongly
rounded in fully apical two-fifths; striae wholly unimpressed, the
punctures rather less coarse, widely separated and becoming obso-
lete near three-fifths from the base, the seventh extending nearly
to the middle; foveae at basal and rather behind apical third. Length
(9 ) 3.4-3.5 mm.; width 1.25 mm. California (Hoopa Valley, Hum-
boldt Co.). Two examples innocuum n. sp.

32 — Form notably broad, the elytra only two-fifths longer than wide.
Body moderately convex, deep and polished black, without metallic
lustre, the legs piceous-black; head three-fourths as wide as the pro-
thorax, much narrower than an elytron, the sulci rather shallow;
antennae black, piceo-rufous at base, not as long as the elytra, the
medial joints between two and three times as long as wide; pro-
thorax two-fifths wider than long, the sides evenly and narrowly
reflexed, strongly and evenly rounded but becoming abruptly par-
allel and straight in about basal fourth, the angles right; base not
evidently narrower than the apex, transversely truncate; surface
sparsely punctulate at base, with very feeble impressions and
distinct subentire stria; foveae large, deep, oval and impressed,

64 MEMOIRS ON THE COLEOPTERA

close to the very fine and shorter carina; elytra relatively large,
nearly three-fifths wider than the prothorax, parallel, with feebly
arcuate sides, obtusely rounded behind; striae fine, scarcely at
all impressed and with fine and moderately separated punctures,
gradually obsolete toward posterior third, the striae, except the sutu-
ral, not entire, the second and fifth deeper at apex; seventh stria
obsolete; foveae before basal and before apical third. Length (cf )
4.35 mm.; width 1.65 mm. Colorado (Eldora). . . . scrutatum n. sp.

Form narrower, the elytra at least one-half longer than wide 33

33 — Prothorax short and transverse; third antennal joint relatively
shorter, scarcely a third longer than the second 34

Prothorax less transverse, more broadly and less prominently rounded
at the sides anteriorly; third antennal joint much more elongate in
both sexes 35

34 — Form narrow, very moderately convex, polished, black, the legs
rufo-piceous; head rather small, narrower than an elytron, the sulci
deep, parallel as usual; antennae black throughout, very slender, not
quite as long as the elytra, the medial joints between two and three
times as long as wide; prothorax three-fifths wider than long; base
distinctly narrower than the apex; sides becoming rapidly parallel
and straight in basal sixth, the angles but little more than right;
surface slightly rugose at base, the impressions very feeble, the stria
fine and limited by them; foveae linear, deeply impressed, near the
very fine carina; elytra parallel, with feebly arcuate sides, gradually
rounded behind, two-fifths wider than the prothorax; striae fine,
feebly impressed, finely punctured, nearly as in the preceding, the
seventh a series of extremely minute and remote punctures to about
apical fourth; foveae at basal and behind apical third. Length (cf )
3.7 mm.; width 1.3 mm. Colorado (Boulder Co.).

denveranum n. sp.

Form slightly stouter and rather more convex, polished, black, the elytra
castaneous, the legs piceo-rufous; head large, four-fifths as wide as
the prothorax and even somewhat wider than an elytron, the bound-
ing ridge of the sulci rather prominent; antennae stouter than in the
preceding, three-fourths as long as the elytra, black throughout, the
medial joints between two and three times as long as wide; prothorax
nearly three-fifths wider than long, similarly widest near apical third,
the sides becoming parallel only very near the angles, the sinus being
broader; surface as in denveraiuim, except that the deep foveae are
more briefly oval and not quite so near the short fine carina; elytra
rather broader, fully one-half wider than the prothorax, the subpar-
allel sides broadly arcuate, the striation and punctures nearly simi-
lar, except that the punctures are still smaller and are more close-set
in the series; foveae nearer anterior and posterior third. Length ( 9 )
4.2 mm.; width 1.5 mm. Utah tractabile n. sp.

35 — Elytra nearly parallel, longer and with almost straight sides. Elon-
gate, only slightly convex, polished, black, the elytra faintly piceous,
each with a faint mibilous rounded external spot near apical third;
under surface black, the legs bright rufous; head more than three-
fourths as wide as the prothorax, but not quite as wide as an elytron;

BEMBIDIIN.E 65

antennae slender, blackish, the basal joint rufous, three-fourths as
long as the elytra, the medial joints scarcely less than three times as
long as wide; prothorax scarcely one-half wider than long, 'widest
just before the middle, the oblique sides posteriorly becoming sinu-
ate, thence parallel and straight for a short distance to the angles,
which are right and sharp; base barely at all narrower than the apex;
surface smooth, not evidently rugose at base, nearly as in the pre-
ceding species, the foveae long, linear and deep, the carina rather
long and distinct; elytra three-fifths longer than wide, one-half wider
than the prothorax, circularly rounded at tip; striae fine, unimpressed,
obsolescent near posterior third, except the first and second, which
are entire; punctures fine and widely separated, closer suturad, the
seventh stria a series of very minute and remote punctules; foveae at
basal and behind apical third. Length (9) 4.2 mm.; width 1.45

mm. Colorado (Boulder Co.) actuosum n. sp.

Elytra less elongate, oblong-oval, not maculate 36

36 — Form elongate-suboval, convex, polished black, with feeble aeneous
lustre, the elytra nubilously and feebly rufescent basally; under
surface black, the legs and epipleura dark rufous; head notably
small and with the eyes unusually flat, two-thirds as wide as the
prothorax and two-fifths as wide as the elytra, the sulci short, not
extending to the apex; antennae black, rufous at base, three-fourths
as long as the elytra, the medial joints barely more than twice as
long as wide; prothorax two-fifths wider than long, the well rounded
sides becoming parallel in about basal sixth, the angles right; base
much narrower than the apex; margins moderately reflexed; surface
longitudinally rugose at base, with the foveae rather short, oblique and
very deep, otherwise as in the preceding species; elytra oval, with
arcuate sides, widest at the middle, one-half longer than wide, three-
fifths wider than the prothorax; striae not very fine, slightly impressed
suturad, excepting the first two obsolescent before the apex; punc-
tures small, moderately close-set, those of the seventh series very
minute and less close; foveaa as usual nearly at basal and apical
third. Length (9) 3-7 mm.; width 1.35 mm. New Mexico. F.

H. Snow viaticum n. sp.

Form elongate but more parallel, similarly convex, deep black and pol-
ished throughout above, black beneath, the femora nearly pure
black, the tibiae and tarsi rufescent; head moderate, with more con-
vex eyes, three-fourths as wide as the prothorax and subequal in
width to an elytron, the sulci normally long; antennae blackish,
piceo-rufous at base, three-fourths as long as the elytra, the medial
joints (cf ) nearly three times as long as wide, slightly shorter (9 );
prothorax relatively larger, two-fifths wider than long, the evenly
rounded sides abruptly becoming straight and parallel in basal fifth
or sixth, the "angles right; surface nearly as in the preceding, the
coarsely rugose foveae larger, less definitely linear at the bottom, the
carina rather long and distinct; elytra somewhat more than one-
half longer than wide, scarcely one-half wider than the prothorax,
subparallel, with moderately arcuate sides, broadly parabolic at
T. L. Casey. Mem. Col. VIII, Oct. igi8.

66 MEMOIRS ON THE COLEOPTERA

apex; striae fine, barely at all impressed, obsolescent posteriorly,
even more so than in viaticum, the punctures fine and, except sutu-
rally, rather widely spaced, the seventh series barely traceable.
Length (cf 9) 3.9-4.0 mm.; width 1.5-1.55 mm. New York (Lake

Champlain). Five examples nitens Lee. (catalogue name)

A — Similar to nitens but larger and rather stouter, the head somewhat
larger; prothorax slightly shorter, one-half wider than long, other-
wise nearly similar; palpi black as usual in this subsection; elytra
similar but not quite so elongate and scarcely over two-fifths
wider than the prothorax, similarly striate and punctate, except
that the punctures are less widely separated. Length (cf 9 ) 4.3
-4.35 mm.; width 1.65 mm. Colorado (Eldora and also from the
Levette cabinet) seductum n. subsp.

37 — Elytra uniform in color, generally black, sometimes feebly and
indefinitely paler apically as in texanum and cogitans, but never
definitely maculate 38

Elytra uniform or very nearly, but always having a posterior bioblique
pale fascia, which is often reduced to an external spot on each. . .47

Elytra of the ustulatnm type in ornamentation, castaneous, nubilously
paler externally toward the humeri and also with the bioblique
posterior fascia of the preceding subsection 56

38 — Basal thoracic angles very acute, everted and prominent. Body
slender, convex, shining, black, or with just visible piceous tinge,
the under surface piceous, the legs bright rufous; head longer than
wide, the eyes not very prominent, three-fourths as wide as the
prothorax and not quite as wide as an elytron; antennae rufo-piceous,
clearer basally, rather long, the medial joints more than three times
as long as wide, feebly obconic; prothorax barely a fourth wider than
long, the sides evenly and strongly rounded, converging posteriorly,
becoming suddenly sinuate only at the angles, widest at two-fifths
from apex; base subequal to the apex; surface very convex, smooth,
the impressions subobsolete, the stria fine and long but not quite
entire; foveae very deeply impressed, elongate, linear, near outer
fifth, the carina distinct; elytra oval, with distinctly arcuate sides,
very gradually strongly rounded behind, three-fifths longer than
wide, barely two-fifths wider than the prothorax; striae feebly im-
pressed, not fine, the discal obsolescent at three-fifths; punctures
strong, well separated except suturad; seventh stria obsolete, the
minute punctules scarcely traceable; foveae near basal and apical
third. Length (cf) 5.3 mm.; width 1.85 mm. Mexico (Colonia
Garcia, Sierra Madre Mts., Chihuahua), — Townsend.

*citulum n. sp.

Basal angles right, the sides near them straight and parallel 39

39 — Head narrow, not so wide as the thoracic apex, the eyes but feebly
convex. Upper surface somewhat depressed, black, polished, with
feeble greenish lustre, the elytra very faintly picescent; under sur-
face piceous, the legs bright rufous; head two-thirds as wide as the
prothorax, very much narrower than an elytron; antennae long,
brownish-testaceous, 'the medial joints three times as long as wide;
prothorax scarcely two-fifths wider than long, the sides evenly and

BEMBIDIIISLE 67

strongly arcuate to basal fifth, becoming there rapidly sinuate and
thence parallel to the right angles, which are very sharp; base dis-
tinctly narrower than the apex; surface smooth, moderately convex,
with subobsolete impressions and subentire stria; fovese small,
smooth, very deep and elongate-oval, the carina obsolete; elytra
parallel, with very feebly arcuate sides, rather rapidly rounding in
posterior third, somewhat more than one-half longer than wide,
one-half wider than the prothorax; striae rather coarse, deeply im-
pressed, obsolete only near the apex, the punctures deep and some-
what coarse, moderately separated; seventh stria a distinct series
of very small and distant though obvious punctures; foveae behind
both basal and apical third. Length (9 ) 5.6 mm.; width 2.0 mm.

New Mexico (Jemez Springs), — Woodgate inquietum n. sp.

Head with normally prominent eyes, as wide as the thoracic apex. . . . 40
40 — Body dark castaneous in color, never deep black. Elongate, rather
convex, shining; legs rufous; head fully three-fourths as wide as the
prothorax but not as wide as an elytron; antennae long, fusco-tes-
taceous, the medial joints rather more than three times as long as
wide; prothorax a third wider than long, the sides broadly, evenly
rounded, becoming rather gradually sinuate posteriorly and parallel
only near the angles, which are right and sharp; surface smooth,
convex, with fine angular anterior, and broad strong posterior, im-
pression, the stria fine, biabbreviated; foveae rather large, very deep,
oval, the carina obsolete; elytra one-half longer than wide and fully
one-half wider than the prothorax, often just visibly inflated pos-
teriorly, the sides feebly arcuate; striae rather coarse, moderately
impressed, fine, obsolescent near apical fourth, the punctures strong,
deep, well separated; seventh stria virtually obsolete; foveae near basal
and apical third. Length (cf 9 ) 4.8-5.8 mm.; width 1.8-2.2 mm.
Arizona (near the southern boundary). Morrison. Seven speci-
mens. Two examples labeled " Mex." from the Levette collection

represent a slightly smaller variety subangustatum Hayw.

Body deep black when mature, piceous-black in merens, usually with

greenish lustre 41

41 — Legs pale rufous throughout 42

Legs rufous, the femora blackish, with pale tip 45

42 — Prothorax less narrowed posteriorly, the base but barely visibly
narrower than the apex. Deep black above and beneath, the upper
surface with feeble greenish tinge; head large, four-fifths as wide as
the prothorax and as wide as an elytron, the sulci deep; antennae
piceous, rufous at base, long, the medial joints obconic and three
times as long as wide; prothorax two-fifths wider than long, the sides
broadly, strongly and subevenly rounded, becoming sinuate basally
and parallel in fully basal fifth, the angles right and sharp; margins,
rather narrowly reflexed; surface smooth, punctulate at base, the
latter depressed; anterior impression very feeble, angular, the stria
strong and subentire; fovese very large and deep, rugulose, the bot-
tom linear, the carina long and distinct; elytra oblong-oval, the sides
distinctly arcuate, rather gradually rounded basally, gradually
strongly rounded behind, one-half longer than wide and nearly one-

68 MEMOIRS ON THE COLEOPTERA

half wider than the prothorax; striae coarse, rather deeply impressed,
fine and obsolescent only very near the apex; punctures coarse,
deep, moderately close, obsolescent near apical fourth; seventh
stria represented by a distinct series of minute punctures; foveae
strong, near basal and apical third. Length (9) 5.4 mm.; width
2.3 mm. British Columbia (Victoria), — YVickham.

insopitans n. sp.

Prothorax strongly narrowed behind, the base much narrower than the
apex; elytra feebly and very nubilously rufescent apically as a rule;
seventh stria subobsolete 43

43 — Sides of the prothorax abruptly parallel in basal fifth or sixth. Body
short and strongly convex, highly polished throughout, bluish-black;
head well developed, three-fourths as wide as the prothorax and as
wide as an elytron; antennae long, slender, fuscous, gradually tes-
taceous basally; prothorax relatively large, convex, a third wider
than long; base not three-fourths the maximum width, the sides
evenly and strongly rounded to the abrupt short posterior sinus;
surface smooth, the impressions subobsolete, the stria fine, abbre-
viated in front; foveae small, smooth, short, linear and very deep,
the carina extremely short and fine; elytra scarcely one-half longer
than wide, two-fifths wider than the prothorax and less than three
times as long, the sides broadly arcuate, rapidly rounding at the
humeri, ogival in posterior two-fifths, the striae coarse and deep,
becoming wholly obsolete in apical fifth or sixth; punctures notably
coarse and deep, separated by barely their diameters, rapidly obso-
lescent at the ends of the striae; foveae moderate, near basal and
apical third. Length (cf) 5.3 mm.; width 1.9 mm. A single
Levette specimen, probably from Indiana histricum n. sp.

Sides of the prothorax becoming parallel only very near the basal angles;
elytra more elongate 44

44 — Form elongate, convex, highly polished throughout, greenish-black
above; head moderate, three-fourths as wide as the prothorax, dis-
tinctly narrower than an elytron, the sulci deep; antennae long, as
in the preceding species, fuscous, gradually testaceous basally; eyes
not so strongly convex as in some others of this subsection; pro-
thorax relatively much smaller than in the preceding or succeeding
species, a third wider than long, convex, the sides strongly rounded,
becoming rather abruptly sinuate near the base; surface smooth,
the impressions very feeble, the stria very fine, biabbreviated ; foveae
moderate, linear, smooth, very deep, close to the moderately strong
distinct carina; elytra three-fifths longer than wide, rather more
than one-half wider than the prothorax, gradually ogival behind,
the sides but feebly arcuate, the humeri rather rapidly rounded;
striae moderate, somewhat feebly impressed, obsolete near apical
sixth or seventh; punctures only moderately coarse and widely sep-
arated— by fully twice their diameters in most cases; foveae moder-
ate, near basal and apical third. Length (cf 9 ) 5.3-6.0 mm.; width
1.9-2.15 mm. Texas (Austin) and Iowa (Keokuk). A very pale
brownish-yellow specimen from New Mexico and another similar
from Missouri, do not seem to differ specifically, though there are

BEMBIDIIN^E 69

no other evidences of immaturity than the very uniform pale color-
ation. Ten specimens texanum Chd.

Form elongate and convex but less ventricose, the prothorax much more
transverse; head larger and scarcely at all narrower than an elytron,
with more prominent eyes, fully three-fourths as wide as the pro-
thorax, which is one-half wider than long, with strongly rounded
sides, becoming rapidly parallel only very near the angles, which
are right and sharp; surface nearly similar, except that the very deep
linear foveae are more distant from the fine carina; elytra barely
more than one-half longer than wide and scarcely more than a third
wider than the prothorax, otherwise nearly as in texanum, except
that they are more rufescent behind and .that the elytral striae be-
come obsolete near apical fourth or fifth. Length (cf) 5-5 mm.;
width 2.2 mm. Two examples from the Levette collection, prob-
ably taken in Indiana cogitans n. sp.

Form elongate, moderately convex, black, with bluish lustre, the elytra
not highly polished as in the preceding but apparently somewhat
alutaceous; legs similarly rufous; antennae long and slender; pro-
thorax widest near apical third, two-fifths wider than long, the
strongly arcuate sides sinuate just before the basal angles; stria
entire; foveae broadly, strongly and irregularly impressed, the carina
very short, not attaining the angles; elytra two-fifths wider than the
prothorax, much more than one-half longer than wide; striae im-
pressed and strongly punctate, obsolete near the tip; punctures
strong, rather widely separated; scutellar series having four or five
punctures. Length 5.5. New York (Willets Point, Long Island).
The type has disappeared and I have not seen it since my then
very small collection left my hands temporarily many years ago.

militare Csy.

45 — Color deep black, the upper surface with strong greenish lustre.
Surface convex, as in striola, smooth and polished; head three-fourths
as wide as the prothorax but distinctly narrower than an elytron,
the eyes moderately prominent; antennae long and slender, piceous,
rufous basally, the medial joints rather more than three times as
long as wide; prothorax two-fifths wider than long, the strongly and
evenly rounded sides becoming rather abruptly straight and parallel
in basal sixth or more, the angles right and sharp; base evidently
narrower than the apex; surface broadly convex, punctulate at base,
the transverse impressions distinct, the stria deeply impressed, not
entire; foveae rather large, nearly smooth, oval, very deep and ad-
joining the distinct carina; margins strongly reflexed basally, finely
apically; elytra oblong, with feebly arcuate sides and gradually
parabolic apex, more than one-half longer than wide, fully one-half
wider than the prothorax; striae rather coarse and impressed, obso-
lete at about apical sixth or seventh, the punctures strong, moder-
ately separated; seventh row of very minute punctures distinct;
foveae near basal and apical third. Length (cf 9 ) 5.0-5.9 mm.;
width 2.0-2.35 mm. California (Redwood Creek, Humboldt Co.).
Seven specimens optatum n. sp.

Color in great part piceous, with shining greenish gloss 46

70 MEMOIRS ON THE COLEOPTERA

46 — Body more abbreviated, moderately convex, the elytra castaneo-
piceous; under surface piceo-rufous, the abdomen pale; head moder-
ately large, very nearly as wide as an elytron; antennae long, slender,
colored as in optatum, the medial joints barely three times as long
as wide; prothorax as in the preceding, except that the sides are more
gradually sinuate near the base, becoming not quite parallel in about
basal sixth, the surface nearly similar but not so punctured basally:
elytra shorter, oblong-oval, with rather more arcuate sides, one-half
longer than wide and one-half wider than the prothorax, the striae
shorter, disappearing near apical fourth, not quite so coarse or deep,
the punctures nearly similar, the seventh series only evident toward
base in the type; foveae at two-fifths and before three-fourths.
Length (cf ) 4.8 mm.; width 1.8 mm. California (Mendocino Co.).

merens n. sp.

Body more elongate, the head and pronotum blacker, with strong green-
ish gloss, the elytra deeper castaneous, with similar lustre, the under
surface and legs similar; head less developed, very distinctly nar-
rower than an elytron, the eyes similar, the sulci even broader and
deeper; antenna? of like coloration, long, slender, the medial joints
fully three times as long as wide; prothorax nearly as in merens but
only a third wider than long, with feebler transverse impressions
and with a few punctures basally, differing especially in having the
sides more abruptly straight and perfectly parallel in basal sixth or
seventh, the angles right and extremely sharp, almost prominent;
elytra oblong-oval, having sensibly arcuate sides and gradually
rounded apex, fully three-fifths longer than wide, two-thirds wider
than the prothorax, the striae and punctures throughout nearly as
in merens, the foveae at basal and apical third. Length (cf ) 5.0 mm.;
width 1.8 mm. Southern California, without further indication of
locality sedulum n. sp.

47 — Elytra with the posterior fascia reduced to an isolated lateral spot
on each .48

Elytra with the bioblique fascia complete or suturally interrupted. . . .51

48 — Head relatively large, as wide as an elytron, sometimes apparently
wider. Elytral striae abbreviated near the apex; seventh stria with
the punctures evident only toward the base; body long and slender,
moderately convex, the elytra evidently wider posteriorly than at
base, black, with strong steel-blue lustre, the elytra sometimes pice-
ous or even paler and castaneous, the posterior spot small or moder-
ate; legs pale rufous, the femora more or less blackish except dis-
tally; head but little narrower than the prothorax, the antennae
fuscous, pale basally, slender, nearly as long as the elytra, the
medial joints three times as long as wide; prothorax just visibly
wider than long, the strongly and evenly rounded sides abruptly
becoming parallel and straight in basal fifth or sixth, the right angles
very sharp; surface strongly convex, punctulate at base, the im-
pressions more or less feeble, the foveae large, deep, broadly sub-
linear, the carina short and fine; margins extremely finely reflexed;
elytra three-fifths longer than wide, fully three-fourths wider than
the prothorax; striae somewhat coarse but feebly impressed, strongly,

BEMBIDIINyE 71

not closely punctate, the striae and punctures gradually obsolete
before the tip; foveae near two-fifths and two-thirds, rather coarse.
Length (cf 9 ) 4.1-4.5 mm.; width 1.35-1.6 mm. Canada (three
examples taken by the writer at Ottawa), New York (Lake Cham-
plain), Wisconsin (Bay field), and New Mexico (Las Vegas). [Och-

thedromus gelidns Lee.] scopulinum Kirby

A — Similar to scopulinum but with the head relatively not so large,
the prothorax notably larger and broader, being a fourth wider
than long, the elytra paler castaneous, not so elongate, oblong,
parallel, not inflated behind, with the striae more coarsely punc-
tate and entire, the row of punctures constituting the seventh
stria entire and strongly marked throughout, the legs more
slender and wholly testaceous, these characters applying strictly
only to the female type from Las Vegas, New Mexico, and 4.5
by 1.7 mm. in dimensions. Three other specimens from " N. M."
and from Sta. Fe Canon, N. M., the latter taken by Prof. Snow,
are more like typical scopulinum, but larger, slightly stouter and
with relatively larger and broader prothorax and smaller head,
the striae similarly slightly abbreviated, the punctures of the
seventh gradually fine and disappearing posteriorly, and the ely-
tra longer, feebly inflated behind and less coarsely punctate, the
legs pale testaceous throughout, as they are also in the Lake Su-
perior examples; they are 4.2-4.3 by 1.65 mm. in dimensions.

bellulum n. subsp.

Head relatively less developed, always distinctly narrower than an ely-
tron 49

49 — Body small in size, rather depressed, with short transverse pro-
thorax, which is apparently somewhat wider at base than at apex.
Body deep black, with greenish lustre, the elytra not quite so black,
the posterior pale spot clearly defined and feebly oblique; legs rufo-
piceous, the femora black, with paler tip; head four-fifths as wide
as the prothorax, with prominent eyes; antennae black, with piceous
basal joint, three-fourths as long as the elytra, the medial joints
not quite three times as long as wide; prothorax one-half wider than
long, the well rounded sides gradually becoming parallel in nearly
basal fifth, the angles right; surface with very feeble impressions
and distinct subentire stria, the foveae large, impressed, linearly
deep at the bottom, the carina rather long and strong; elytra par-
allel, with but very feebly arcuate sides and rapidly rounded humeri,
parabolic in apical third, not quite one-half longer than wide and
about three-fifths wider than the prothorax; striae not coarse, wholly
unimpressed, gradually obsolescent near the apex, the punctures
rather small but deep and moderately separated, the seventh stria
a subentire series of extremely minute punctules; foveae near two-
fifths and two-thirds. Length (9 ) 4.5 mm.; width 1.75 mm. Cal-
ifornia (Truckee). One specimen satelles n. sp.

Body much larger, more convex, the prothorax much narrower at base

than at apex 50

50 — Form elongate, very convex, polished, black, with feeble greenish
lustre, the elytra sometimes aenescent, the posterior pale spot small,

72 MEMOIRS ON THE COLEOPTERA

/ —

rounded and moderately well denned; legs pale, the femora often
piceous, except at apex; head notably small, three-fifths as wide as
the prothorax and much narrower than the thoracic apex, the eyes
not very prominent; antennae long, slender, piceous, paler basally,
the medial joints between three and four times as long as wide; pro-
thorax large and convex, two-fifths wider than long, the anteriorly
strongly rounded sides oblique behind, becoming gradually sinuate
and parallel very near the angles, which are right; anterior impres-
sion deep, near the apex, the posterior depression strong and punc-
tate; stria deep, not quite entire; foveae large, strongly impressed,
the middle of each very deep; carina rather strong; margins strongly
and subequally reflexed; elytra three-fifths longer than wide, only
two-fifths wider than the prothorax, the sides feebly arcuate, not
very abruptly rounded at the humeri, gradually strongly rounded
in apical two-fifths; striae moderate, more or less impressed, obsolete
only very near the apex or subentire, the seventh subobsolete; punc-
tures moderate, not very close-set; foveae rather small, near basal
and apical third. Length (9) 6.2-6.3 mrn.; width 2.3 mm. New
Mexico bimaculatum Kirby

Form nearly as in bimaculatum, but with relatively larger head and
smaller prothorax, shining, piceous-brown throughout, the anterior
parts nearly black, with feeble greenish lustre; head fully three-
fourths as wide as the prothorax and as wide as the thoracic apex,
the eyes notably prominent; antennae long and slender, fuscous, very
gradually testaceous basally, the medial joints rather more than
three times as long as wide; prothorax two-fifths wider than long,
widest barely at all before the middle, the sides subevenly rounded,
rather gradually sinuate posteriorly, becoming parallel near the
right angles; surface punctate and depressed at base, the anterior
impression fine, deep and close to the apex, which is almost trun-
cate, with obtuse and blunt angles; stria strong, subentire; foveae
and carina nearly as in bimaculatum; elytra similar in general out-
line but broader, one-half wider than the prothorax, the striae finer
and less impressed, obsolescent on the declivity, the punctures some-
what smaller, moderately separated; foveae before basal and near
apical third; posterior pale spot similar. Length (c? 9 ) 5.7-6.8
mm.; width 2.15-2.4 mm. Nevada (Reno). Ten specimens.

renoanum n. sp.

51 — Prothorax notably large and very convex, greatly constricted at
base; eastern regions. Body rather stout, very convex, polished,
black, with greenish lustre, the arms of the posterior fascia very
much more oblique than in any other; abdomen rufous; legs brighter
rufous; head very moderate, not two-thirds as wide as the prothorax
but as wide as its apex, much narrower than an elytron, the eyes
only moderately prominent; antennae nearly as in the preceding,
more rapidly testaceous basally; prothorax two-fifths wider than
long, very strongly inflated and rounded at the sides, becoming
parallel rather abruptly in basal sixth or seventh; base depressed
and punctate, the stria fine; foveae very deep, linear, the carina
shorter, distinct; elytra nearly three-fifths longer than wide, two-

BEMBIDIINJE 73

fifths wider than the prothorax, gradually ogival behind, the striae
coarse and deeply impressed, rapidly obsolete near apical fifth, the
seventh obsolete; sixth stria barely extending to the middle; punc-
tures coarse and deep, rather close; foveae before basal and behind
apical third, the anterior almost confounded with the strial punctures.
Length (cf 9 ) 6.2-7.0 mm.; width 2.35-2.6 mm. Pennsylvania

and Illinois postremum Say

Prothorax relatively smaller, not so convex or inflated and less strongly

narrowed at base; size much smaller; western regions 52

52 — Thoracic base subequal in width to the apex. Body oblong, very
moderately convex, polished, black, with slight metallic lustre, the
elytra obscure castaneous, the posterior bioblique fascia rather nubi-
lous; under surface black, the legs pale; head four-fifths as wide as
the prothorax and almost as wide as an elytron; antennae blackish,
the basal joint pale, the medial joints slightly obconic, nearly three
times as long as wide; prothorax three-sevenths wider than long, the
sides evenly and rather strongly rounded, rapidly becoming parallel
in about basal fifth, the angles right; surface smooth, feebly depressed
fend slightly rugose at base, the anterior angulate impression fine
and shallow; stria fine, subentire; foveae rather large and rounded,
very deeply impressed, the carina nearly as long as the fovea and
distinct; elytra three-fifths longer than wide and about one-half
wider than the prothorax, gradually parabolic behind, the sides
feebly arcuate, rapidly rounding at the humeri; striae moderate, only
feebly impressed, disappearing very near the apex or subentire, the
seventh wanting; punctures distinct basally, gradually fine behind,
obsolete near apical third ; foveae near basal and apical third. Length
(cf 9 ) 4.6-5.0 mm.; width 1.75-2.0 mm. British Columbia (Vic-
toria),— YVickham Vancouver! n. sp.

Thoracic base more or less evidently narrower than the apex 53

53 — Seventh stria wholly wanting. ., 54

Seventh stria visible as a row of more or less minute punctures 55

54 — Body stouter, rather convex, polished black, with feeble metallic
lustre, the posterior pale fascia distinct, though more or less nubi-
lously defined; under surface black, the legs bright rufous; head
well developed, with prominent eyes, usually over four-fifths as
wide as the prothorax and very nearly as wide as an elytron; sulci
rather distant from the eyes; antennae not very slender, blackish,
with rufous basal joint, two-thirds as long as the elytra, the medial
joints between two and three times as long as wide; prothorax two-
fifths to nearly one-half wider than long, the strongly rounded sides
becoming rather abruptly parallel in basal sixth to fifth, the angles
right; surface smooth, not punctured at base, with more or less
feeble impressions and fine incomplete stria; foveae very deep, lin-
early impressed, sometimes punctulate, longer than the carina, which
is distinct; elytra scarcely more than one-half longer than wide,
about one-half wider than the prothorax, parallel, with broadly
arcuate sides, the striae gradually disappearing near the apex, only
feebly impressed, the punctures distinct though not very coarse, the
foveas near basal and behind apical third. Length (cf 9 ) 5.0-5.8

74 MEMOIRS ON THE COLEOPTERA

mm.; width 1.8-2.25 mm- California (San Diego — the type locality
—and coast regions north of San Francisco), also Oregon (Corval-
lis). Sixteen examples striola Lee.

Body narrower and more depressed, similarly black, with testaceous
legs, but with the elytra not black but uniform castaneous, the pos-
terior fascia nubilously paler; head rather well developed though
with less prominent eyes, four-fifths as wide as the prothorax but
more evidently narrower than an elytron; antennae nearly similar
but more slender; prothorax smaller, nearly one-half wider than
long, the evenly rounded sides abruptly straight and parallel in
nearly basal fifth, the angles right; surface as in striola but less con-
vex and with the side margins more finely reflexed; elytra parallel,
narrower, three-fifths longer than wide, fully one-half wider than
the prothorax, the striae as in striola but with the punctures smaller
and more close-set, the foveae near basal and apical third. Length
(cf 9 ) 4.7-5.6 mm.; width 1.8-2.0 mm. California (Dunsmuir,
Siskiyou Co. — Wickham; also near Mt. Diablo). Six examples.

shastanicum n. sp.

55 — Form oblong-suboval, rather convex, shining, black, the posterior
fascia but slightly bioblique and more or less interrupted at the su-
ture; elytra sometimes dark castaneous; under surface black, the
legs dark rufous, the femora blackish with pale tip; head moderate,
. distinctly narrower than an elytron; antennae slender, three-fourths
as long as the elytra, blackish, pale at base, the medial joints not
quite three times as long as wide; prothorax two-fifths to one-half
wider than long, in general outline as in the preceding species; sur-
face depressed and punctulate at base, the anterior impression dis-
tinct; foveae very deep, sublinear, usually more abrupt externally
than internally, the carina distinct and strongly elevated; elytra
one-half longer than wide, two-fifths to one-half wider than the pro-
thorax, the striae moderate, not much impressed, gradually disap-
pearing near the apex, the punctures not very coarse and well sep-
arated, closer in the two sutural series; foveae near basal third and
apical fourth. Length (cf 9 ) 4.5-5.3 mm.; width 1.75-1.9 mm.
New Mexico, Colorado (Boulder Co.), Utah (southwestern) and
Arizona (Tugson and other parts). Twelve specimens.

consanguineum Hayw.

Form more elongate, moderately convex, piceous-black, shining, the
elytra pale flavo-testaceous in the type, with. the bioblique posterior
fascia broadly interrupted at the suture and rendered more evident
by a darker shading bordering it anteriorly; under surface pale
piceous, the legs testaceous; head rather small, much narrower than
an elytron, the antennae slender, in great part pale; prothorax two-
fifths wider than long, the sides inflated and strongly arcuate, rather
abruptly straight and parallel in nearly basal sixth, the angles right;
surface barely at all depressed medially at base, the anterior impres-
sion moderate, the stria only visible between the impressions; foveae
deeply impressed, sublinear at the bottom, the carina distinct; side
margins more broadly reflexed than in any other of this section;
elytra more elongate, nearly two-thirds longer than wide, parallel,

I

BEMBIDIIKLE 75

with broadly arcuate sides, rather gradually rounded at the humeri,
fully two-fifths wider than the prothorax; striae somewhat fine and
not evidently impressed, gradually disappearing near the tip, the
punctures not coarse or very deep; foveae near three and five sev-
enths. Length (cf ) 5.2 mm.; width 1.85 mm. Colorado. Levette
collection. A single example lepusculus n. sp.

56 — Antennae not so long, not over twice as long as the thoracic width,
the medial joints distinctly less than three times as long as wide.
Body of smaller size, but unusually diversified in this respect, col-
ored as in tetracoluni and ustulatum, except that the head and pro-
notum are dark piceous and not black; head moderate, very much
narrower than an elytron, the antennae testaceous throughout; pro-
thorax a third to two-fifths wider than long, widest barely before the
middle, the evenly and strongly rounded sides becoming rather grad-
ually parallel in basal fifth or sixth, the base slightly depressed and
feebly punctulate, the foveae large, deep, sublinear, the carina dis-
tinct; elytra shorter than in the others of this subsection, one-half
longer than wide, parallel, with rather distinctly arcuate sides, about
one-half wider than the prothorax, the striae feebly impressed, grad-
ually evanescent on the declivity, the punctures moderate in size
and separation, the seventh stria a distinct series of fine and more
remote punctures; foveae near basal and behind apical third. Length
(c? 9 ) 3.8-5.6 mm.; width 1.4-1.9 mm. Illinois (Highland Park),
Colorado (Boulder Co.), Wyoming (Cheyenne), Utah, Nevada
(Reno) and New Mexico. Abundant. Thirty-seven specimens.

lucidum Lee.

Antennae longer, with the medial joints fully three times as long as wide,
usually more than twice as long as the thoracic width; body larger
in average size 57

57 — Prothorax smaller, the elytra longer than in the allied species, with
subentire striae. Elongate and only moderately convex, shining as
usual, black or feebly picescent, with greenish lustre anteriorly, the
pale castaneous elytra marked near the humeri and posteriorly as
in tetracohim; legs rufous; head four-fifths as wide as the prothorax,
with prominent eyes, slightly narrower than an elytron; prothorax
two-fifths wider than long, widest and with the sides subprominently
rounded just before the middle, the sides rather abruptly parallel
in basal sixth, the angles right; base but slightly narrower than the
apex; surface nearly as in lucidum, the base but feebly depressed,
the lineate deeper part of the foveae more oblique; elytra fully three-
fifths longer than wide, parallel, with feebly arcuate sides, rather
gradually rounding at the humeri, very gradually parabolic behind,
three-fourths wider than the prothorax; striae rather fine and very
feebly impressed, subentire, the punctures small and somewhat
close-set; seventh series only distinct in basal half; foveae at two-fifths
and two-thirds. Length (cf 9 ) 5.2-5.5 mm.; width 1.95 mm. New
Mexico (Las Vegas). Three examples castalium n. sp.

Prothorax larger, the elytra broader, with the striae obsolescent near the
apex 58

58 — Body oblong, moderately convex, shining, black, the anterior parts

76 MEMOIRS ON THE COLEOPTERA

with decided greenish lustre, the elytra castaneous, nubilously paler
toward the humeri and in a bioblique posterior fascia; under surface
black, the legs rufous, the femora rarely in part more obscure; head
moderate, the antennae long and slender, fuscous, gradually testa-
ceous basally; prothorax nearly as in Incidum, a third to two-fifths
wider than long, the anterior impression rather strong, the posterior
obsolescent medially; surface rather convex, the moderate stria gen-
erally attaining the base but not the apex; foveae large, very deep,
broadly impressed, with the bottom elongate-linear, the carina al-
most equally long, fine but distinct; elytra oblong, parallel, with
but very feebly arcuate sides, rapidly rounding at the humeri, rather
obtusely circularly rounded at apex, not quite three-fifths longer
than wide, about one-half wider than the prothorax, the striae rather
fine, not impressed, finely and somewhat closely punctate, the foveae
at three-sevenths and near two-thirds. Length (cf 9 ) 4.8-5.5 mm.;
width 1.8-2.0 mm. Nevada (Reno) nevadense Ulke

Body oblong-oval, similar in coloration, the legs pale testaceous; head
and antennae nearly similar; prothorax somewhat shorter but other-
wise as in nevadense and Incidum; elytra differing from those of neva-
dense in their more oval form, the sides being distinctly arcuate, less
rapidly rounded at the humeri and with the apex more gradually
ogivally rounded, the lateral margins more broadly and strongly .re-
flexed; striae more impressed suturad but otherwise similar; foveae
differing in position as a rule, being near basal and apical third.
Length (cf 9 ) 4.8-5.7 mm.; width 1.8-2.2 mm. California (coast
regions from Sta. Cruz to Humboldt) subinflatum Mots.

Body nearly as in the European ustulatum, oblong-oval, rather convex,
shining, black, with feeble viridi-aeneous lustre anteriorly, the elytra
nearly black, with a large nubilous oblong pale area at the sides
basally and a pale bioblique subapical fascia, generally widely inter-
rupted at the suture; under surface piceous-black, the legs pale
rufous; head moderate, slightly narrower than an elytron; antennae
long, slender, piceous, testaceous basally; prothorax a third wider
than long, much narrower at base than at apex, the strongly rounded
sides abruptly straight and parallel in basal fifth or sixth, the angles
right; apex only very feebly sinuate; surface convex, the anterior
impression distinct and punctulate; base punctate, the impression
obsolete medially; stria sometimes subentire; foveae broadly im-
pressed, deep and linear at the bottom, the carina short and feeble;
elytra more than one-half longer than wide, one-half wider than the
prothorax, parallel, with distinctly arcuate sides, somewhat gradu-
ally rounding at the humeri and very gradually ogival at apex;
sides distinctly arcuate; striae not fine, noticeably impressed, very
fine and obsolescent at apex; punctures strong, deep and close-set,
disappearing near posterior third; seventh stria a series of minute
and rather close punctures, obsolescent behind the middle; foveae
near basal and apical third. Length (d71 9 ) 4-5-5-5 mm.; width
1.75-2.05 mm. New York (Long Island) and Indiana.

tetracolum Say
A — Similar to the preceding but with the thoracic base barely evi-

BEMBIDIIX.E 77

dently narrower than the apex, the elytra broader, with the parallel
sides straighter, the apex more obtusely rounded and the striae
and punctures less coarse, the former somewhat less impressed.
Length (9) 5.6 mm.; width 2.2 mm. Minnesota (Duluth). A

single example taken by the writer rupicola Kirby

B — Similar to tetracolum but broader, the prothorax broader, with the
apex but little wider than the base, the sides more strongly
rounded, more oblique posteriorly and parallel for a shorter dis-
tance before the hind angles; elytra castaneous, with the pale
areas of tetracolum relatively paler and not nubilously but very
sharply defined, the posterior fascia crossing the suture, the parallel
sides much less arcuate and more rapidly rounded at the humeri.
Length (9) 5.2 mm.; width 2.1 mm. New York (lower Hudson

Valley) nactum n. subsp.

59 — General habitus and striation of the elytra nearly as in the preceding

section, the striaa gradually obsolescent or very feeble at the apex. . 60

General habitus differing somewhat, due to the broader body and the

elytral striae being deep and very conspicuous to the extreme elytral

apex 6 1

60 — Body narrow, distinctly depressed, shining, black, with greenish
lustre, the elytra uniform pale castaneous, darker and greenish at
tip; under surface black, the legs rufous; head well developed, with
prominent eyes, about as wide as an elytron, fully four-fifths as
wide as the prothorax; antennae rather short, only two-thirds as
long as the elytra, piceous-black, with rufous basal joint, the medial
joints between two and three times as long as wide; prothorax one-
half wider than long, the base barely visibly narrower than the apex;
sides well rounded before the middle, straighter apically, oblique
and broadly sinuate behind, becoming parallel at the angles, which
are right and very sharp; surface with moderate impressions, the
stria extending only between them, the foveae shallow, rugulose, ob-
liquely sublinear, the carina obsolete; elytra parallel, with nearly
straight sides and rapidly rounded humeri, three-fifths longer than
wide and one-half wider than the prothorax, the apex circularly
rounded; striae moderately coarse, distinctly impressed, all entire,
though very fine and feeble at apex; punctures not coarse but close-
set; foveae rather small, just before the middle and behind apical
third. Length (9 ) 5-O mm.; width 1.75 mm. Massachusetts. The
specimen described is marked "type" but is probably a cotype.

[Bemb. blanchardi Hayw.] rufotinctum Chd.

Body notably broad, more convex, shining, black, with aeneo-cuprous
lustre throughout above, black beneath, the legs obscure rufous, the
femora nearly black; head moderate, nearly four-fifths as wide as
the prothorax, very much narrower than an elytron; antennas long
and slender, three-fourths as long as the elytra, black, the basal
joint rufous, with a blackish streak above, the medial joints rather
more than three times as long as wide; prothorax one-half wider
than long, the sides well rounded just before the middle, oblique
and straighter anteriorly, oblique posteriorly, becoming gradually
deeply sinuate just before the angles, which are very sharp, acute

78 MEMOIRS ON THE COLEOPTERA

and prominent; surface with very feeble impressions and biabbre-
viated stria, the foveae rather small, rugose, deeply impressed and
sublinear, the carina obsolete; elytra one-half longer than wide,
two-thirds wider than the prothorax, parallel, the sides scarcely
arcuate, rapidly rounded at the broadly exposed humeri, broadly
obtusely rounded at tip; striae as in the preceding, feebly impressed,
distinctly but not very coarsely punctate, the foveae small, near basal
and apical third, the posterior fovea wanting in one specimen.
Length (cf 9 ) 5.6-5.8 mm.; width 2.3-2.4 mm. Pennsylvania, New
York and Indiana dilatatum Lee.

61 — Elytral striae feebly impressed and finely punctate, the dorsal foveae
well developed and broadly impressed as a rule. Body broadly
oblong, black throughout, with rather bright subcupreous lustre
above, the anterior parts somewhat less shining, the legs piceous-
black; head with prominent eyes, four-fifths as wide as the pro-
thorax but not as wide as an elytron; antennae long and slender,
the medial joints between three and four times as long as wide,
black, the basal joint rufous beneath, blackish above; prothorax
two-fifths to one-half wider than long, about as wide at base as at
apex, widest barely before the middle, the sides not narrowly but
very feebly reflexed, rounded submedially, straight anteriad, equally
oblique and very feebly sinuate posteriad, the basal angles minutely
prominent and acute; surface with slight wavy rugulations, the im-
pressions feeble, the stria fine and incomplete; foveae large, rugulose,
extremely shallow, the carina wanting; elytra parallel, with feebly
arcuate sides, more than one-half longer than wide, one-half wider
than the prothorax, the small punctures rather close-set, the foveae
near three-sevenths and three-fourths. Length (cf 9 ) 5.7-6.4 mm.;
width 2.25-2.35 mm. Pennsylvania (Fairview), New Jersey and
Wisconsin. [Bemb. antiquuni Dej.] honestum Say

Elytral striae well impressed and conspicuously punctured, the dorsal
foveae notably small 62

62 — Form moderately broad, rather more convex and more polished,
smaller in size, black, with aeneous lustre above, the legs blackish-
piceous, the femora paler basally; head with unusually large prom-
inent eyes, five-sixths as wide as the prothorax but distinctly nar-
rower than an elytron, the sulci deep and parallel as in related spe-
cies; antennae colored as in honestum but slightly shorter and less
slender, the medial joints about three times as long as wide; palpi
similarly blackish; prothorax relatively small, two-fifths wider than
long, much narrower at base than at apex; sides more narrowly and
strongly reflexed, more evenly and strongly arcuate anteriorly, more
oblique basally, becoming gradually deeply sinuate just before the
sharply prominent angles; surface more convex, smooth, with obso-
lescent impressions and very fine stria, the foveae small but deep,
elongate and linear, the carina wanting; elytra parallel, with feebly
arcuate sides, one-half longer than wide and nearly three-fifths
wider than the prothorax, subcircularly rounded at tip; striae deep
at apex, the strong close-set punctures evident almost to the tip;

BEMBIDIIN/E 79

foveae near two-fifths and three-fourths. Length (cf 9 ) 4.7-5.4
mm.; width 1.8-2.1 mm. Indiana and Iowa. Abundant.

chalceum Dej.

Form rather broader; size larger, nearly as polished, black, the anterior
parts with greenish lustre, the elytra aeneous; head nearly similar,
the eyes not quite so large; antennae longer and mqre slender, simi-
larly colored, the medial joints more than three times as long as
wide; prothorax two-fifths to one-half wider than long, in outline
nearly as in chalceum but less convex, with less strongly rounded
sides and deeper transverse impressions, broader at base, the latter
not very obviously narrower than the apex; foveae linear, longer and
more oblique, the carina wanting; sides well reflexed, becoming ex-
tremely finely so at apex; elytra rather more than one-half longer
than wide, three-fifths wider than the prothorax, parallel, with
feebly arcuate sides, not quite so rapidly rounding at base as in
chalceum, the apex more gradually obtusely ogival; impressed striae
still conspicuous at apex; the strong and close-set punctures are,
however, obsolete at about apical third or fourth; foveae similar.
Length (of1 9 ) 5.7-6.0 mm.; width 2.1-2.35 mm. Texas. Two ex-
amples integrum n. sp.

63 — Elytra very gradually ogival behind in almost apical half. Body
larger in size, moderately convex, shining, piceous-black, with green-
ish lustre anteriorly, the elytra very pale and uniform testaceous,
with a triangular fuscous area at base; under surface nearly black,
the legs rufous; head rather large, four-fifths as wide as the prothorax
and as wide as an elytron, the eyes moderately prominent; antennae
long and slender, testaceous, the medial joints three times as long
as wide; prothorax relatively large, two-fifths wider than long, much
narrower at base than at apex, the sides subevenly and strongly
rounded, rather abruptly straight and subparallel in about basal
sixth, the angles right; surface depressed at base, the anterior im-
pression distinct, the stria fine, not entire; foveae rather small, deep,
oval, the carina distinct; margins very finely reflexed; elytra slightly
more than one-half longer than wide, only two-fifths wider than the
prothorax, wider behind the middle than at base, the humeri rapidly
rounding; striae very fine, entire, barely at all impressed, the punc-
tures very fine and rather widely separated; foveae small, near
two and four fifths. Length (cf) 5.2 mm.; width 1.9 mm. New
Mexico (somewhere between Fort Wingate and Jemez Springs),—
Woodgate sejunctum n. sp.

Elytra more rapidly rounding behind, parallel; body much smaller in
size 64

64 — Sides of the prothorax rather abruptly straight and parallel in about
basal sixth 65

Sides gradually though distinctly sinuate basally, becoming parallel only
at the angles 66

65 — Form moderately slender, rather more convex, shining, black, the
anterior parts with greenish lustre, the elytra testaceous, with the
apical margin slightly clouded and with a common fuscous spot just
behind the middle, the spot laterally prolonged and attenuated; legs

8o MEMOIRS ox THE COLEOPTERA

rufous, the femora often piceous with pale tip; head not large and
with the eyes only moderately prominent, three-fourths as wide as
the prothorax and distinctly narrower than an elytron; antennae fus-
cous, gradually paler basally, the medial joints scarcely three times
as long as wide, slightly obconic; prothorax not one-half wider than
long, much narrower at base than at apex, the sides strongly rounded
anteriorly, more oblique and less rounded behind the middle, mod-
erately reflexed; anterior impression fine and distinct, the base mod-
erately depressed, the stria very fine between them; foveae rather
large, regular, broadly sublinear, the carina distinct; elytra rather
shorter, barely one-half longer than wide, parallel, with feebly arcu-
ate sides and rapidly rounding humeri; striae fine and feeble, obliter-
ated somewhat before the tip; punctures fine, somewhat close; foveae
near three-sevenths and four-fifths. Length (cf 9 ) 4.2-4.6 mm.;
width 1.4-1.55 mm. Wyoming (Cheyenne), — Wickham. Four ex-
amples caducum n. sp.

Form notably slender and more depressed, shining, nearly similar in
coloration throughout, the apex of the elytra scarcely at all infumate,
the central cloud subsimilar; head subsimilar but fully as wide as an
elytron, the antennae nearly similar , prothorax similar but narrower
and with the sides more evenly arcuate from apex to the parallel basal
part, the obliquity posteriorly being nearly as arcuate as the anterior
part of the sides; elytra differing very much in form, more elongate,
three-fifths longer than wide, nearly one-half wider than the pro-
thorax, parallel, with the sides distinctly arcuate and much less
rapidly rounding at the humeri, the apex less obtusely rounded;
striae fine, feebly impressed and entire, distinct at apex, the punc-
tures fine but more distinct, moderately close; foveae similar. Length
(9) 4.2 mm.; width 1.35 mm. Colorado (Montrose — elev. 6000
ft.) albidipenne n. sp.

66 — Body moderately slender, somewhat convex, shining, the coloration
as in the preceding, except that the subcentral cloud on the elytra
is very small, nubilous and without lateral extension, the apical mar-
gin darker though apparently by diaphaneity, the abdomen dark
beneath the tip; head and pronotum pale brown in somewhat imma-
ture specimens, the former well developed, with notably prominent
eyes, nearly four-fifths as wide as the prothorax and as wide as an
elytron; antennae slender, pale, the medial joints fully three times
as long as wide; prothorax as in albidipenne, excepting the posterior
portions, which are as described; hind angles right and very sharp;
elytra parallel, with only very feebly arcuate sides, very rapidly
rounded at the humeri, somewhat more than one-half longer than
wide and fully one-half wider than the prothorax, gradually sub-
evenly rounded in apical third; striae fine, feebly impressed, entire,
the fine punctures sometimes visible to the tip; foveaa small, at two
and four fifths. Length (d71) 4.0-4.3 mm.; width 1.45-1.5 mm.
Utah (Little Salt Lake, Parowan), — \Yickham. Four specimens.

parowanum n. sp.

Body distinctly narrower, similar in color, except that the submedian
cloud on the elytra is larger and tenuously prolonged at its sides, as

BEMBIDIINJE 81

in cad HC urn; head and prothorax nearly as in the preceding, except
that the latter is a little shorter, nearly one-half wider than long,
with the basal angles, though sharply defined, evidently more than
right; elytra nearly similar but only two-fifths wider than the pro-
thorax and with the side margins less broadly reflexed. Length (cf )
3.75 mm.; width 1.3 mm. A single specimen from the Levette col-
lection, apparently from Colorado petulans n. sp.

67 — Elongate, subparallel, very depressed, as much so as in any of the
planatum group, shining, piceous-black, the elytra testaceous, black-
ish toward tip; under surface piceous, the abdomen rufous, with
the segmental apices blackish; head large, with broad and deep
sulci and moderately prominent eyes, five-sixths as wide as the pro-
thorax and distinctly wider than an elytron; antennae fuscous, paler
basally, as long as the elytra, the medial joints three times as long
as wide; prothorax virtually flat, with broadly reflexed side margins,
distinctly narrower at base than at apex, two-fifths wider than long,
the sides somewhat prominently rounded just before the middle,
thence feebly arcuate to the rounded apical angles, oblique posteriorly,
becoming subparallel in more than basal sixth, the angles nearly
right, sharp; surface with wave-like rugulosity toward the fine in-
complete stria, the impressions moderate; foveae large, rugose and
very shallow, the carina not evident; elytra three-fifths longer than
wide, two-fifths wider than the prothorax, parallel, the sides very
rapidly rounding at the humeri; striae coarsely and deeply impressed,
entire, the punctures fine and especially very feeble; seventh stria
obsolete; foveae near two-fifths and three-fourths. Length (9) 5.2
mm.; width 1.75 mm. New York (Ithaca). One example.

grandiceps Hayw.

My representatives of guadrulum are so much smaller than Le-
Conte's type, "from east of Fort Colville" —5 mm. — that I am by
no means certain that they properly belong to that species. It is
evident that there are a number of specific modifications of the
qiiadrulum type of Peryphus in the northwestern regions, of which
two are here described. Umbraticola resembles the New Mexican
recticolle, but has the elytral punctures as remote as in qiiadndum.
The original description of recticolle is given above, as I have no
authentic example at hand.

As a probable abnormality, the complete absence of the anterior
dorsal fovea? in the male type of callidum is to be noted ; the usual
two are present in the female. In one of my specimens of dilatatum
Lee., it is the posterior fovea that is similarly wanting. A case will
be noted further on, under Notaphus, where the middle of the three
fovea; in consimile Hayw., is completely obsolete, and there is an-
other instance before me under Isotachys omissus, where the anterior
T. L. Casey, Mem. Col. VIII. Oct. 1918.

82 MEMOIRS ON THE COLEOPTERA

fovea is missing. These instances of missing dorsal foveae are, how-
ever, rather rare.

The species described above under the name vulsum, is probably
allied to planum Hald. (guexi Chd.), but has the sixth elytral stria,
not evident basally and obliterated posteriorly as intimated of that
species, but having the form of a very fine subobsolete line, entire
and equal throughout, and the elytra are not black but pale cas-
taneous. Planum Hald. (1843), is not preoccupied by planum
Schil. (1846), as represented by Chaudoirand repeated by Hayward.
Champlaini is probably allied to fugax Lee., described as from Illi-
nois, but differs in being as convex as tetracolum Say, and its degree
of depression could not be compared in any way with that of pla-
natum, as stated by LeConte of fugax. In the latter species, also,
the seventh stria is said to be obliterated behind the middle; in
champlaini it is wholly wanting. Planipenne Lee., from Lake Su-
perior, is said to be a synonym of fugax by Hayward, but as the
sixth and seventh striae are obliterated, it must be much more
closely related to vulsum or to planum Hald.; both planipenne and
planum differ from vulsum rather conspicuously in coloration, so
far as can be decided by my very limited material.

Bembidium lugubre of LeConte, together with the two subspecies
defined in the table, might all be regarded as varieties and subspecies
of the Mexican mexicanum Dej., a type pervading nearly all the So-
noran faunas of North America; sallei Bates is, however, a distinct
species, in no way very closely allied to mexicanum, and in fact Mr.
Bates confused many species and valid subspecies under his con-
ception of mexicanum, with little or no attempt at legitimate dis-
crimination. Pernotum is widely distinct from sallei in size and
form of the prothorax, in strial punctuation and in many other
features, being one of the more isolated species of this section of the
subgenus. All the forms above described as allied to transfer sale,
united without color of propriety by Mr. Hayward, are valid spe-
cies, as shown by often extended series in my collection. Ochthedro-
mus compar Lee., of this section is simply the catalogue name of a
supposed variety of transversale; nothing further can be said con-
cerning it at present.

The species described by Hayward as brevistriatum might seem
to belong properly to the nigrum section, and not widely separated

BEMBIDIIN/E 83

therefrom as above suggested, for it resembles nigrum in general
habitus, size and more especially in having the eighth stria remote
from the margin ; but the subgenus cannot be divided consistently
as above by the conspicuous differences in form of the prothorax,
without taking this course, and after all, although the eighth stria
is similarly situated in both, it has its own peculiarity in each case,
being groove-like and moderately punctate in nigrum, and feebly

•

and only partially impressed but with relatively gigantic punctures
in brevistriatum. Nigrum is joined very naturally to the succeeding
large species of the transversale type, though the qiiadrulum and
concolor sections of small black species, and, correspondingly, brevi-
striatum is united in equally gradual succession with the larger spe-
cies of the postremum type, having cordate prothorax, through the
californicum section of small black polished species, which present
corresponding conditions, as a link, that the concolor section does
in the case of nigrum and the large species with non-cordate pro-
thorax.

The form above noted under the name nitens — which is appar-
ently undescribed hitherto, the only references to it which can be
found being in lists and catalogues — was placed as a synonym of
the European grapei by Hay ward, but as there are several well
defined species and subspecies of the section to which it belongs,
scattered through North America east of the Rocky Mountains, but
none at all on the Pacific slope, where boreal Eurasiatic species are
especially to be looked for, I am of the opinion that it is not the
same as grapei and therefore have described it under the name as-
signed by LeConte.

The above species described as histricum is one of those con-
founded with the more northern picipes Kirby, by Hayward, as is
also militare Csy. — the type of which disappeared many years ago
from my collection ; both the latter have bright rufous legs, however,
and could not have been appropriately named picipes, even with a
slight shading of the femora, which may be granted as sometimes
occurring. I find that in the species of that subsection having bi-
colored legs, there is no decided departure from this coloration,
except that due to evident immaturity, as seen in a good series of
the Californian optatum in my collection and, on the other hand,
in those species normally having wholly rufous legs, there is but

84 MEMOIRS ON THE COLEOPTERA

rarely any suspicion of darker femora, this being shown very well
by a correspondingly complete series of texanum before me. It is
rather beyond doubt that picipes is a species related to optatum,
platynoides and merens, rather than to texanum, histricum and mill-
tare. If the elytra in militare are really in any way alutaceous, as
stated in my original description, this would proclaim it as a very
isolated species in the subgenus Peryphus, and I fear therefore that
the description may be faulty in this respect.

The species optatum, merens and sedulum, described above, belong
to the platynoides subsection, but platynoides Hayw., is a larger and
flatter species, the types of which were found near the source of the
Kern River in southern California; optatum, which seems to ap-
proach it more closely than any other of the three, is fully as convex
as striola, and in fact has the normal convexity of the entire tetra-
colum or ustulatum section.

The varietal forms of scopulinum, near its southern limits in
New Mexico, are very puzzling and would require large series for
proper study; it is a peculiarly northern type, as is also bimacula-
tum Kirby. My two specimens of the latter, from New Mexico,
may not be perfectly typical, though fitting the description of Hay-
ward, who probably had typical specimens before him, and espe-
cially in the very small head. Renoanum is certainly a different
though related species, differing in color, in the larger head and much
more prominent eyes. Sordidum Kirby, said to be identical with
birnaculatum by Mr. Hayward, I do not know.

The Mexican species described under the name submaculatum by
Bates (Biol. C.-A, I, i, p. 149) is apparently very closely allied to
consanguineum Hayw., and the two may be identical; vernale Bates
(1. c.), however, also seems closely allied. Lucidum (1. c.), is given
by Mr. Bates as a new species, the reference to LeConte's descrip-
tion having been inadvertently omitted.

For much the same reason that led me to adopt the name nitens
above, instead of grapei, I would recommend the adoption of Say's
name tetracolum, instead of ustulatum, although retaining the latter
as a group name. The fact that besides tetracolum we have a num-
ber of closely related though distinct taxonomic modifications,
shows that the tetracolum type has been very long established in
America, and the probabilities therefore are that no one of our re-

BEMBIDIINJE 85

lated forms is exactly the same as ustulatum. Comparisons of Amer-
ican with European species have been made too hastily in many
instances, of which I believe the present to be one, as well as in the
cases of nitens and frontale Lee. — not assimile.

The sejunctum section, as defined above, comprises forms that
were described by Mr. Hayward under the name fuscicrus Mots,
—not properly fuscicrum as wrritten. The name fuscicrus was sub-
stituted by Motschulsky for the Alaskan species identified as luci-
dum Lee., by Mannerheim. This occurs on the seashore of the
Kenai Peninsula, while lucidum inhabits no such environment, being
confined to the inland parts of the continent, and is therefore in
all probability quite distinct from lucidum Mann, nee Lee.; lucidum
Lee., it may be stated, never has fuscous legs. The name fusci-
crus was given by Motschulsky to this Kenai species, and not at
all to the "Variety b" of Mannerheim, which is a different species
and allied to the species from caducum to petulans above. The only
allusion by Motschulsky is " Peryphus lucidus Mann, non LeConte
= P. fuscicrus Mots." How the name fuscicrus could have become
limited to the "Variety b" of Mannerheim I do not know, but it
is so given in the Munich Catalogue, the lucidum Lee., of Manner-
heim, being there regarded as a correct identification. It is plain,
therefore, that "Variety b" of Mannerheim is still without a name.
It is not likely to be identical with any one of the above species
from caducum to petulans, all of which, it may be said, are amply
distinct among themselves, the only one of which there may be any
doubt being petulans; this may possibly prove to be a subspecies
of parowanum, although not probably.

Group X — ephippigerum
Subgenus Peryphodes nov.

The chief characters distinguishing this small subgenus from
Peryphus, are the narrow subcylindric form of the body and the
short, rather thick antennae; our two species are as follows:

Form elongate, parallel and convex, polished throughout, deep black,
with feeble greenish lustre, the elytra dark testaceous, with a trans-
versely oval flavous ring, including a darker sutural spot near apical
fourth, the anterior part of the ring accentuated by blackish shading;
there is also a small scutellar darker spot; under surface piceous, the

86 MEMOIRS ON THE COLEOPTERA

legs dark rufous; head three-fourths as wide as the prothorax and
wider than an elytron; antennae short and thick, but little longer
than the head and prothorax, dark testaceous in color, the medial
joints somewhat obconic, much less than twice as long as wide; pro-
thorax large, two-fifths wider than long, somewhat wider at base
than at apex, the sides rather feebly, subevenly rounded, becoming
oblique and broadly sinuate toward the sharp basal angles, which
are rather more than right, the sides of the base very oblique; mar-
gins moderately reflexed; anterior impression subobsolete; base
somewhat depressed and punctulate; stria very fine and subentire;
foveae small, rather deep and linear, the carina distinct; elytra two-
thirds longer than wide, only about a fourth wider than the pro-
thorax, parallel, the sides very gradually rounding toward the hu-
meri; striae rather fine, very feebly impressed, the punctures small,
widely separated except near the suture, the foveae near basal third
and apical fourth or fifth; seventh series as distinct as the sixth.
Length (cf 9 ) 3.8-4.0 mm.; width 1.2-1.3 mm. California (San
Diego). Three examples, taken by the writer on the shores of the

bay ephippigerum Lee.

Form much more abbreviated, convex, shining, black, generally with
piceous tinge, the elytra flavate, with a small scutellar cloud, a
transverse biarcuate clouded fascia at the middle and a bioblique
cloud between this and the apex, the small anterior fovea also black-
ish; entire under surface dark rufous to black, the legs always rufous;
head much smaller, scarcely as wide as an elytron and two-thirds as
wide as the prothorax, the eyes not quite so large or prominent;
antennae testaceous throughout, longer and less stout than in the
preceding, the medial joints about twice as long as wide; prothorax
shorter, nearly one-half wider than long, otherwise almost as in the
preceding, except that the oblique sides posteriorly are not distinctly
sinuate, being very broadly and just visibly so, with the very sharp
angles rather more than right; elytra about one-half longer than wide,
a fourth to nearly a third wider than the prothorax, parallel, the
sides very gradually rounding toward the humeri, ogival in apical
third; striae fine, subentire, only impressed suturad and there rather
faintly, the punctures fine, less separated than in the preceding, the
seventh stria and foveae almost similar. Length (cf 9 ) 3.4-3.8
mm.; width 1.18-1.28 mm. Utah (Little Salt Lake, Parowan and
Provo), — Wickham. Eight specimens salinarium n. sp.

In salinarium the elytra are frequently clouded with obscure
tint throughout, the peculiar markings then being indistinct, and
in one specimen they are nearly black, each with a long nubilous
rufous external spot toward the humeri. This species may have
been confounded with ephippigerum by Mr. Hayward, but it is
obviously distinct in its much more abbreviated form, smaller head,
less thickened and somewhat longer antennae and in the character
of the elytral ornamentation.

BEMBIDIIN/E 87

Group XI — semistriatum
Subgenus Hydriomicrus nov.

The two known species of this group do not resemble each other
very closely in general habitus, but both possess a very remarkable
character in having a series of small setigerous punctures along the
middle of each of the strial intervals. The mentum tooth is rather
sharply triangular in both species, which are typical of two distinct
sections of the subgenus; they may be defined as follows:

Body ventricose, strongly convex, polished, black, the elytra indefinitely
piceo-rufous apically; under surface black, the legs rufous; head
moderate, three-fourths as wide as the prothorax and much narrower
than an elytron, the sulci broad and deep, the large eyes moderately
prominent; antennae long, slender, blackish, pallid basally, longer
than the elytra, with the medial joints nearly three times as long as
wide; prothorax barely a third wider than long, the sides inflated
and strongly rounded, abruptly sinuate near the base and thence
straight and somewhat diverging in nearly basal fifth to the right
and sharp angles; surface convex, smooth, the anterior impression
obsolete, the base depressed; stria deep, almost entire; foveae smooth,
deep, oval, adjoining the rather long fine carina; margins rather nar-
rowly reflexed; elytra oblong, two-fifths longer than wide, fully two-
thirds wider than the prothorax, parallel and nearly straight at the
sides, which are abruptly rounded at the humeri; striae rather coarse
but only feebly impressed, wholly disappearing at two-fifths from
the apex, the seventh as distinct as the others but much shorter;
eighth deep, at some distance from the margin; punctures notably
coarse, the usual two dorsal foveae not traceable. Length (cf 9 )
3.5-3.8 mm.; width 1.25-1.35 mm. Pennsylvania, Virginia and
North Carolina (Asheville) semistriatum Hald.

Body elongate, subparallel, moderately convex, polished, piceous-black,
paler beneath, the legs rufous; elytra blackish, nubilously rufous
externally toward base and near the apex; head large, with very
moderate eyes and broad shallow sulci, three-fourths as wide as the
prothorax and wider than an elytron; antennae testaceous, thick but
filiform, not quite as long as the elytra, the medial joints scarcely
twice as long as wide; prothorax large, nearly three-fifths wider than
long, the base only two-thirds as wide as the apex; sides strongly
and subevenly arcuate, very oblique posteriorly, becoming briefly
and abruptly sinuate just before the right and sharp angles; margins
moderately reflexed; anterior impression distinct, the base depressed
and sparsely punctulate; stria incomplete; foveae small, oval, moder-
ately deep, the carina very short; elytra one-half longer than wide,
scarcely a fifth wider than the prothorax, the sides parallel and
broadly arcuate, somewhat gradually rounding at the humeri; striae
moderate, distinctly impressed, obsolete only just before the apex,
the seventh equally pronounced and extending behind the middle;

88 MEMOIRS ON THE COLEOPTERA

eighth much closer to the margin than in the preceding; punctures
not very coarse, deep and notably close-set, disappearing only near
the ends of the striae, the usual two dorsal fovese small but distinct,
before basal and near apical third, on the third interval near the
third stria. Length (9 ) 3-7 mm.; width 1.2 mm. Colorado (Colo-
rado Springs), — Wickham constricticolle Hayw.

In constricticolle the punctures of the series along the intervals
are extremely small, and, unless searched for carefully, would be
overlooked ; the setae of these interstrial punctures are very easily
shed in both species.

Group XII — variegatum
Subgenus Notaphus Steph.

This group is much the largest in North America, but in the Euro-
pean fauna is far smaller than Peryphus. The species are smaller
on the whole than in Peryphus and rather less diversified ; some of
them are among the more minute of the genus Bembidion and the
largest are but little above the average in size and come far from
attaining the stature of such as haplogonum and stabile of the Pery-
phus group. The mentum is broadly and generally more or less
sharply triangular, but becomes obtusely rounded in such forms as
cordatum, or margined at apex and very obtuse as in scudderi, or
transversely truncate as in obtiisangulum . While most of the forms
in Peryphus have the integuments highly polished throughout, there
is a large proportion of Notaphus species, where all or a part of the
surface is alutaceous, sometimes producing a very dull appearance
and, in a great many species, especially of the variegatum type, the
surface is but slightly convex and the outline oblong. I have found
it convenient to divide the group into nine sections as follows:

Prothorax as wide at base as at apex 2

Prothorax narrower at base than at apex, more or less cordiform, except

in a few species such as lassulum and dentellum 4

2 — Upper surface more or less alutaceous, at least anteriorly, except in

dorsale, the elytra variegated, except in certain rare cases, the pale

maculation formed by short lines on the intervals. . .(variegatum) i

Upper surface polished throughout 3

3 — Sides of the prothorax arcuately oblique behind; body subcylindric

in form; color uniform black or nearly so (obtusangulum) 42

Sides of the prothorax sinuously oblique behind; body very much smaller,

more oblong and less convex, the elytra variegated., .(novellnni) 45
4 — Elytra with the usual, two dorsal foveae 5

BEMBIDIIX.E 89

Elytra each with three dorsal foveae 9

5 — The dorsal foveae on the third interval but very close to the third
stria; body very small, polished throughout and uniformly deep

black; frontal sulci parallel (vile) 46

The dorsal fovea? subaxial on the third interval 6

6 — Size moderate to rather large; frontal sulci parallel or nearly so. . . .7

Size always very small 8

7 — Frontal sulci deep and parallel; entire surface highly polished.

(vinnulum) 51

Frontal sulci generally parallel but broad and notably shallow as a rule;
upper surface more or less alutaceous, at least anteriorly, wholly
shining in deject-um; elytra variegated throughout, or only near the

apex (cordatuni) 52

8 — Elytra oblong, variegated, frontal sulci parallel to feebly or strongly
oblique; second antennal joint sometimes as long as the third.

(affine) 68

Elytra oval, not variegated, the sulci parallel (miiscicola] 85

9 — Upper surface polished throughout, the elytra variegated; frontal
sulci parallel; body moderately large in size (scudderi) 86

The species described by Mr. Hayward under the name con-
stricticolle, was subsequently removed by the author and associated
with semistriatum, and I have removed tigrinum Lee., to form the
type of a separate subgeneric group, named Leuchydrium (ante p.
46); epliippigerum Lee., also included by Hayward, forms the type
of the subgeneric group Peryplwdes (ante p. 85). Unfortunately
there are a considerable number of the described species in this
group that I fail to identify among my material, such as convexulum
Hayw., and grandicolle, arattim, morulum, dyschirinum and vile of
LeConte, although I have a number evidently allied to the three
last named; ceneicolle, versutum and rubiginosum of LeConte, and
wickhami Hayw., are also unknown to me at present; perhaps I
may have unwittingly renamed some of them in the following tabu-
lar statement of our species:

I — Legs, antennae anS palpi deep black throughout 2

Legs never deep black 7

2 — Elytra uniform in coloration, not maculate with paler tint, except

occasionally to a minute degree 3

Elytra with pale irregular fasciae 6

3 — Entire upper surface brilliantly cupreous; elytra never with trace of

paler spots 4

Entire upper surface deep black, blue-black or feebly aeneous; species

allied to coloradense Hayw 5

4 — Body oblong, moderately convex, shining, only very slightly alu-
taceous anteriorly, black, with strong cupreous lustre; head three-

90 MEMOIRS ON THE COLEOPTERA

fourths as broad as the prothorax and as wide as an elytron, the
sulci moderately narrow and deep; antennae slender, four-fifths as
long as the elytra, the medial joints more than twice as long as wide;
prothorax short, more than one-half wider than long, widest at two-
fifths from apex, the sides subevenly and distinctly rounded, ob-
lique and nearly straight in about basal half, the angles obtuse but
sharp; margins moderately reflexed; surface in part with feeble undu-
lations, the impressions very feeble; base slightly depressed, the
stria very fine, incomplete; fovese short, very deep and sublinear,
within broad shallow depressions, the carina strong and about a
third the total length; elytra not quite one-half longer than wide,
two-fifths wider than the prothorax, parallel, with feebly arcuate
sides, obtusely rounded in apical third; striae fine, entire, the punc-
tures very fine, more distinct basally; seventh stria similar to the
others; foveae small, before basal and at apical third. Length (cf 9 )
3.8-4.1 mm.; width 1.45 mm. California (Mendocino Co.; also one

example labeled "Clark's Station") idoneum n. sp.

A — Nearly similar but smaller and much narrower, the upper surface
bright viridi-aeneous; prothorax more than one-half wider than
long, the sides almost evenly rounded from apex to base, not
sinuate though straight very near the basal angles; impressions
almost obsolete, the stria deeper, the carina distinct in basal
fourth; elytra fully one-half longer than wide, only a third wider
than the prothorax, more gradually ogival behind, the sculpture
nearly similar. Length (c?) 3.6 mm.; width 1.25 mm. Cali-
fornia (Lake Co.), — Fuchs obsequens n. subsp.

Body oblong, very moderately convex, similar to idoneum but with the
elytra distinctly more elongate; head similarly well developed; an-
tennae slender, three-fourths as long as the elytra, the medial joints
more than twice as long as wide; prothorax as in idoneum but
smoother, more than one-half wider than long, the sides more prom-
inently rounded at three-fifths from base, thence oblique and nearly
straight anteriorly and posteriorly, becoming very feebly sinuate
toward base; foveae similarly small and deep but not subequal in
length to the carina as they are in idoneum, relatively much shorter,
the carina extending through basal two-fifths and strong; elytra
three-fifths longer than wide, rather wider behind the middle than
at base, a third wider than the prothorax, otherwise as in idoneum
but somewhat more gradually rounding behind. Length (9) 4.2
mm.; width 1.45 mm. California (Mokelumne Hill, Calaveras Co.),

— Blaisdell efficiens n. sp.

Body similarly oblong but with less abbreviated prothorax and shorter,
thicker antennae, rather shining and cupreous above, moderately
convex; head larger than in idoneum and with relatively less prom-
inent eyes, similarly narrower than the prothorax but rather wider
than an elytron; antennae nearly three-fourths as long as the elytra,
the medial joints more obconic and about twice as long as wide;
prothorax as in idoneum, but broader and only one-half wider than
long, the sides more broadly and less strongly rounded, becoming
feebly sinuate before the angles, which are nearly right and very

BEMBIDIIN^E 91

sharp; surface nearly similar; elytra fully one-half longer than wide,
parallel, with feebly arcuate sides, less obtusely rounded at apex,
nearly two-fifths wider than the prothorax; striation similar, the
punctures sometimes notably coarser basally. Length ( 9 ) 4.2-4.4
mm.; width 1.55 mm. California (Siskiyou Co.), — Koebele.

continens n. sp.

5 — Surface moderately convex, rather shining, slightly alutaceous an-
teriorly, deep black, sometimes feebly aeneous; head three-fourths
as wide as the prothorax and fully as wide as an elytron, with rather
prominent eyes; antennae rather long, the medial joints between
two and three times as long as wide; prothorax one-half wider than
long and much narrower than the elytra, the sides evenly, rather
strongly rounded, oblique in about basal half, becoming slightly
though evidently sinuate toward the angles; margins not broadly
but strongly reflexed; impressions very feeble, the moderate stria
incomplete; fovese small, deep, sublinear, the carina long and strong,
distant from the fovese as in all the preceding species; elytra fully
one-half longer than wide, about two-fifths wider than the pro-
thorax, gradually parabolic behind, parallel, with broadly arcuate
sides, the striae fine, entire, scarcely at all impressed, the seventh
feebler than the others; punctures fine, close-set, sometimes rather
stronger basally; foveae normally small, before basal and near apical
third. The elytra are generally deep black throughout, but in one
example there is a minute feeble and barely discoverable pale point
externally near apex and another just outside the middle of the
disk near basal fourth. Length (c? 9 ) 4.2-4.7 mm.; width 1.5—
1.75 mm.; Vancouver Island (Victoria) and Washington State.

imperitum n.sp.

Surface of the elytra more polished and rather more convex, the dorsal
foveae larger and conspicuous, deep black throughout, feebly alu-
taceous anteriorly, the elytra without trace of pallid maculation;
head rather larger but otherwise similar, distinctly wider than an
elytron, the antennae similar; prothorax throughout nearly as in
imperitum, one-half wider than long and with the oblique sides
basally barely distinguishably sinuate before the angles, which are
sharp and nearly right, but the carina is about as long as the fovea
and not much longer as it is in that species; elytra rather shorter,
broader and more convex, scarcely one-half longer than wide, a third
wider than the prothorax; striae entire, not so fine and distinctly im-
pressed, the punqtures a little coarser, similarly close-set and gradually
obsolete behind; second and fifth striae similarly grooved at tip;
foveae similarly placed but larger and stronger, not impressed but
abruptly outlined. Length (cf1) 4.4 mm.; width 1.5 mm. Wash-
ington State prociduum n. sp.

6 — Body oblong, rather convex, black, alutaceous anteriorly, the under
surface and epipleura black; elytra with a small pale point at the
base of the fifth interval, two similarly small on the third interval
before and behind basal third, a fascia near basal third, broad on the
margin, becoming rapidly attenuate inward and ending on the fifth
interval, an entire biarcuate irregular fascia near apical third and

92 MEMOIRS ON THE COLEOPTERA

some pale area at apex, the pale areas sharply defined; head rather
small, two-thirds as wide as the prothorax and narrower than an
elytron; antennae black, the basal joint rufous, with a black streak
above, three-fourths as long as the elytra, the medial joints barely
twice as long as wide; prothorax not one-half wider than long, the
parallel sides broadly, subevenly arcuate, becoming gradually very
feebly sinuate toward the angles; impressions feeble, the stria nearly
entire, fine; foveae large, shallow, rugulose, the bottom an elongate
deep linear impression, the carina long, distinct; elytra barely one-
half longer than wide, almost one-half wider than the prothorax,
parallel, with broadly arcuate sides, obtusely rounded at apex;
striae entire, rather fine, feebly impressed, the punctures fine, obso-
lete near the apex; foveae small, at basal and apical third. Length
(cf) 3.4-3.5 mm.; width 1.3 mm. Michigan (Marquette), — Sher-
man nigripes Kirby

7 — Species occurring only to the westward of the Rocky Mountain

divide 8

Species inhabiting only the regions east of the Rocky Mountains 31

8 — Pale elytral maculation very restricted 9

Pale maculation much more extended, though sometimes very nubilous

and feebly defined 10

9 — Body shining, black, the anterior parts but faintly alutaceous; elytra
with a short narrow faint fascia externally near basal third, and a
small external spot near apical fourth; under surface black, the epi-
pleura rufous, at least basally ; legs piceo-rufous; head well developed,
three-fourths as wide as the prothorax and even somewhat wider
than an elytron, the eyes prominent; sulci moderately deep; antennae
slender, black, the basal joint rufous, black above, four-fifths as
long as the elytra, the medial joints nearly three times as long as
wide; prothorax about one-half wider than long; base somewhat
wider than the apex; sides subevenly, moderately rounded, rather
abruptly sinuate at the angles, which are right and sharp; surface
smooth, the impressions obtuse but evident, the fine stria only ex-
tending between them; foveae small, deep, sublinear, the carina
long and strong; elytra one-half longer than wide, only a third wider
than the prothorax, parallel, with feebly arcuate sides, rather grad-
ually parabolic behind; striae entire but very fine, unimpressed, the
punctures very fine, not very remote; foveae small, before basal
and near apical third. Length (cf) 3. 8-4.0 mm.; width 1.3-1.55 mm.
California (San Francisco). Two examples, taken by the writer.

augurale n. sp.

Body in color and maculation nearly as in the preceding, but more aeneous
above; legs brownish-rufous, the epipleura obscure rufous; anterior
parts more alutaceous; head not quite so large, scarcely as wide as
an elytron, the antennae nearly similar, but with the medial joints
about two and one-half times as long as wide; prothorax much nar-
rower, only two-fifths wider than long, barely wider at base than
at apex, the sides subevenly though less strongly rounded and be-
coming sinuate, not at the angles but well before them, being par-
allel in basal seventh; surface nearly similar but duller and with

BEMBIDIIN/E 93

the margins not quite so strongly reflexed; elytra longer, more than
one-half longer than wide and but little less than one-half wider
than the prothorax, otherwise nearly as in the preceding throughout,
except that the sides are rather more gradually rounded toward the
humeri. Length (9) 4.4 mm.; width 1.65 mm. California (Gua-
lala River, Alendocino Co.) consuetum n. sp.

Body elongate-oblong, shining, greenish-black, the head distinctly, the
pronotum scarcely at all, alutaceous; elytra at about basal third
with two small pale spots on the third, one on the fifth and two short
lines side by side on the seventh and eighth intervals; on the eighth
with a short line at the middle, and, near posterior third, with short
lines forming a fascia from the third to eighth interval; under sur-
face piceous — possibly immature, with the legs and epipleura flavo-
piceous; head with prominent eyes, scarcely three-fourths as wide
as the prothorax, about as wide as an elytron, the sulci rather shal-
low; antennae slender, piceous-black, the basal joint rufous, black
above, about three-fourths as long as the elytra, the medial joints
fully three times as long as wide; prothorax distinctly wider at base
than at apex, not quite one-half wider than long, the sides evenly
and moderately rounded, becoming gradually scarcely visibly sinu-
ate toward the somewhat obtuse but sharp angles; impressions very
feeble, the stria fine, incomplete; foveae large, shallow, rugulose, with
a deep linear depression at the middle, the carina long and strong;
margins well reflexed; elytra more than one-half longer than wide,
two-fifths wider than the prothorax, obtusely parabolic at tip, par-
allel, with but very feebly arcuate sides; striae fine, entire, not dis-
tinctly impressed, the punctures fine; foveae small, before basal and
at apical third. Length (cf) 5.0 mm.; width 2.0 mm. Utah (Mil-
ford), — Wickham evidens n. sp.

Body oblong, less elongate and very moderately convex, shining, black,
more or less alutaceous anteriorly, the elytra with a small pale point
on the third interval near basal fifth, on five to eight near basal
third an irregular fascia of very small spots, and, near posterior
third, a very short extefnal fascia of short pale lines; legs dark
rufous, the epipleura more flavate; head fully as wide as an elytron,
the sulci rather broad and shallow; antennae slender, nearly four-
fifths as long as the elytra, colored as in evidens, but the medial joints
are not quite three times as long as wide; prothorax nearly one-half
wider than long, the evenly and distinctly rounded and well reflexed
sides becoming distinctly sinuate basally, but parallel only at the
angles, which are right and sharp; impressions feeble, the much
abbreviated stria fine; foveae short, very deep and sublinear, the
carina long and distinct; elytra parallel, with broadly arcuate sides,
barely one-half longer than wide and two-fifths wider than the pro-
thorax, obtusely parabolic at apex; striae entire but very fine, unim-
pressed, the punctures very fine; foveae small, before basal and at
apical third. Length (9) 4.6-4.9 mm.; width 1.8 mm. California
(Sonoma Co.). Two examples simulator n. sp.

10 — Basal foveae of the proijptum large, very shallow and strongly ru-
gose II

94 MEMOIRS ON THE COLEOPTERA

Basal foveae deep and sublinear, as in all the preceding species 12

II — Form elongate and rather narrow, convex, black, the anterior parts
with strong aeneous-green lustre, shining medially but roughly scab-
rous toward the sides; elytra with the fasciae of pale lines much ex-
tended, leaving a biarcuate black fascia about the middle, also some
dark area on the suture expanded near apical fourth; a small dark
spot surrounding the anterior fovea is also evident; under surface
black, the epipleura piceo-rufous, the legs rufous; head large, but
little narrower than the prothorax, with very prominent eyes, the
sides of the front rugose, the sulci rather deep; antennae moderate,
fuscous, very gradually testaceous basally; prothorax barely two-
fifths wider than long, the parallel sides but feebly arcuate, becom-
ing broadly, distinctly sinuate basally; impressions almost obsolete,
the stria subentire; carina moderate; elytra oblong-oval, parallel,
with evenly arcuate sides, very gradually rounding at the humeri,
more than one-half longer than wide, about one-half wider than the
prothorax; striae not very fine and somewhat impressed, entire and
deep to the apex; punctures small but deep and very close; seventh
stria as strong, deeply impressed and entire as the others; foveae
rather before basal and apical third. Length (cf 9 ) 3.65-4.7 mm.;
width 1.25-1.7 mm. California (northern coast regions) and Ne-
vada (Reno). Abundant variolosum Mots.

Form not quite so elongate and much smaller in size, the anterior parts
black, with strong green lustre, alutaceous, not so roughly scabrous
laterally as in the preceding; elytra with the pale coloration pervad-
ing the entire surface, and but feebly shaded in the blacker areas
alluded to under variolosum; under surface black, the epipleura and
legs pale flavo-testaceous; head much smaller, with less prominent
eyes, the sulci narrower and deeper; antennae not so long and more
slender, fusco-testaceous, gradually clearer basally, the medial joints
barely more than twice as long as wide; prothorax more evidently
wider than the head, two-fifths wider than long, formed nearly as
in the preceding but with the large shallow foveae less coarsely scab-
rous and exhibiting traces of a short, deeper linear depression at the
middle, the carina longer; elytra shorter, one-half longer than wide,
two-fifths wider than the prothorax, the parallel sides less arcuate,
more rapidly rounding about the humeri; striae finer, not impressed,
entire, the punctures small but more distinct and much less close-
set; anterior fovea more distant from the base. Length (of 9 ) 3.0
-3.8 mm.; width 1.15-1.35 mm. Nevada (Elko — YVickham; also
from an unrecorded locality in the state) umbratum Lee.

12 — Body narrow, convex and stibcylindric, strongly shining, the head
only very slightly alutaceous, black, with aeneous lustre, the elytra
piceous, with a nubilous basal spot and another, external, near apical
fourth, testaceous; under surface piceous-black, the epipleura fla-
vate, the legs rufous; head four-fifths as wide as the prothorax and
as wide as an elytron, the eyes moderately prominent, the sulci
rather narrow and sharply defined; antennae fuscous, gradually
obscure rufous basally, three-fourths as long as the elytra, the medial
joints between two and three times as long as wide; prothorax barely

BEMBIDIIN.E 95

two-fifths wider than long, the nearly truncate apex, with well de-
fined angles, scarcely as wide as the base; sides feebly arcuate, grad-
ually slightly sinuate basally, the angles rather obtuse though sharp;
margins but finely reflexed; base rather depressed; anterior impres-
sion feeble, dilated and transversely rugulose medially, the stria
very fine; foveae small, deep, linear, the carina long and distinct;
elytra more than one-half longer than wide, scarcely two-fifths wider
than the prothorax, subparallel, with feebly arcuate sides, very
rapidly rounded at the humeri, the apex circularly rounded, the
striae entire but extremely fine, unimpressed, the punctures so fine
as to be almost indistinct, larger in the first stria basally. Length
(cf ) 3-5 mm.; width 1.35 mm. California (San Francisco).

curiosum n. sp.

Body oblong, more or less suboval, of the usual type 13

13 — Sides of the prothorax becoming not very abruptly straight and
parallel in basal fifth or sixth 14

Sides of the prothorax moderately oblique and more or less evidently
sinuate basally, but never becoming quite parallel before the basal
angles 15

14 — Surface rather convex, deep black and shining, the head distinctly,
the pronotum barely, alutaceous; elytra piceous, very feebly and
indefinitely paler near the humeri, and with a transverse and irreg-
ular, suturally interrupted nubilous rufous fascia at posterior third;
under surface black, the epipleura and legs uniform pale piceo-
rufous; head three-fourths as wide as the prothorax, hardly as wide
as an elytron; sulci very shallow, with their sharp external margins
irregularly sinuous; antennae long and slender, blackish, the basal
joint rufous, shaded above, the medial joints three times as long as
wide; prothorax two-fifths wider than long, the sinuate apex with
distinct angles, narrower than the base; sides most rounded at about
the middle, straighter anteriorly, broadly and conspicuously re-
flexed, finely so at apex; impressions distinct, the stria distinct, lim-
ited by them; foveae moderately impressed, in part deeper and ob-
liquely sublinear, the carina strong, moderately long; elytra one-half
longer than wide, nearly one-half wider than the prothorax, parabolic
at apex, wider behind the middle than at base, moderately rounded
at the humeri; striae entire, very fine apically, distinct but scarcely
impressed anteriorly, the punctures not coarse but distinct, moder-
ately separated; foveae small, near basal fourth and apical third,
the anterior within large shallow indentations. Length (9) 5-O
mm.; width 1.9 mm. British Columbia (Metlakatla), — Keen.

mobile n. sp.

Surface and coloration nearly as in mobile, the head less alutaceous, the
rufous coloration of the elytra very nubilous though traceable in
nearly basal half, the apex also more definitely pale; legs and epi-
pleura in great part rufous; femora blackish, rufous basally and api-
cally; hypomera abruptly rufous — faintly so in mobile; head simi-
lar but with deeper sulci; antennae almost similar; prothorax nearly
similar, except that the widest part, with prominently rounded sides,
is slightly before the middle, the apex less sinuate and with blunter

96 MEMOIRS ON THE COLEOPTERA

angles, and the side margins are less broadly reflexed; impressions
not so strong, the stria impressed, incomplete; foveae and carina
similar, the general surface postero-laterad similarly feebly rugulose
and dullish; elytra similar but less broad, rather more than one-half
longer than wide; striae and punctures nearly as in mobile, the foveae
more nearly at basal and apical third. Length (of) 4.5 mm.; width
1.65 mm. California (Truckee) semotum n. sp.

Surface and coloration nearly as in the two preceding, the head, sulci
and antennae almost as in mobile; head and prothorax larger than in
semotum; elytra with the faint pallidity externally and at base barely
traceable, the fascia similar; apex as in mobile, not definitely paler;
prothorax in outline nearly as in semotum, but only a third wider
than long, also with the apex sinuate and with rather sharp angles
as in mobile; impressions distinct, the incomplete stria moderate;
carina longer and stronger than in either of the preceding; elytra
differing from either, oblong-oval, parallel, with distinctly arcuate
sides, nearly similar in proportional relationships but with the striae,
though entire, extremely fine and unimpressed, the punctures very
minute and widely separated; seventh stria observable but faint;
foveae small, at basal fourth and apical third. Length (cf ) 4.8 mm.;
width 1.85 mm. California (Duncan's Mills, Sonoma Co.).

nubiferum n. sp.

15 — Body notably large and stout, the general habitus much as in the
three preceding species; black, shining, the anterior parts with feeble
greenish lustre, the head rather evidently alutaceous; elytra piceous,
broadly, somewhat nubilously rufescent toward base externally, and
with a faint fascia near apical third as in the preceding; legs rufous,
the femora somewhat clouded medially; head two-thirds as wide as
the prothorax and narrower than an elytron, the moderate sulci
having an acute sinuous outer limit; palpi piceous, blackish distally;
antennae long and slender, fuscous, in part pale basally; prothorax
nearly one-half wider than long, widest at anterior two-fifths, the
sides there strongly, subevenly rounded, oblique and broadly sinu-
ate in a'bout basal half, the angles sharp and nearly right, the an-
terior but slightly blunt; surface nearly as in mobile, the margins
strongly reflexed; base and apex equal; elytra one-half longer than
wide, almost one-half wider than the prothorax, the sides not very
rapidly rounding at the humeri; striae entire, not very fine, impressed,
strongly so basally, where the generally very fine punctures become
stronger and rather close; foveae asperulate, near basal fourth and
apical third. Length (9) 6.0 mm.; width 2.4 mm. Idaho (Coeur
d'Alene), — Lt. J. A. Leyden gulosum n. sp.

Body not quite so large, rather depressed above, similar in coloration, the
legs and inflexed sides of the pronotum and elytra pale; head well
developed, the sulci shallow, their external sides prominent and sinu-
ous; antennae as in the preceding; prothorax scarcely two-fifths
wider than long, strongly rounded and reflexed at the sides, finely
reflexed anteriorly, the oblique sides basally, very moderately sinu-
ate, the angles obtuse but sharp; surface nearly as in the preceding;
impressions strong, the carina long and strong; elytra oblong-oval,

BEMBIDIIN^E 97

colored and with vague maculation as in the preceding forms; striae
fine, scarcely at all impressed, the punctures very fine and rather
widely separated; foveae near basal fourth and apical third. Length
(9) 5-5 mm.; width 2.2 mm. California (St. Helena, Xapa Co.—

San Diego and San Francisco — LeConte) approximatum Lee.

Body smaller and narrower 16

1 6 — Bod}- narrower, more elongate and more convex, the elytral markings

frequently rather poorly defined 17

Body slightly less narrow, or more abbreviated, and less convex, the ely-
tral markings usually more sharply defined; species of the varium

and patruele type 27

17 — Prothorax but slightly transverse and with feebly rounded sides;
elytra more or less alutaceous, the anterior parts strongly so. Nar-
row, black, with greenish or subaeneous lustre; elytra as in all the
preceding of this section, piceous, with very nubilous markings; legs
dark rufous; head four-fifths as wide as the prothorax and as wide
as an elytron, the sulci broad and shallow; antennae fuscous, less so
at base, the medial joints scarcely more than twice as long as wide;
prothorax less than two-fifths wider than long, the sides basally but
feebly converging and broadly, just visibly sinuate, the angles more
than right but sharp; margins very moderately reflexed; base feebly
depressed and slightly punctulate; impressions feeble, the stria fine;
foveae short but deep, the carina rather long and distinct; elytra
one-half longer than wide, about two-fifths wider than the prothorax,
parallel, with the sides broadly arcuate, gradually rounding to the
humeri; striae entire, fine, not noticeably impressed, the punctures
fine, gradually obsolete posteriorly, not very close-set; foveae before
basal and behind apical third as a rule. Length (cf 9 ) 4.0-4.2 mm.;
width 1.3 mm. California (Alameda). Three specimens.

devinctum n. sp.

Prothorax more transverse and well rounded at the sides 18

1 8 — Prothorax distinctly narrower at base than at apex, although the
species evidently belong to the present, rather than to the cordatum

section of the subgenus 19

Prothorax as wide at base as at apex to somewhat wider 20

19 — Form moderately narrow, convex, feebly viridi-aeneous and notably
dull anteriorly, the elytra aeneo-piceous, paler toward the sides in
more than basal half, extending inward at base and near basal third,
and with a basal line and subbasal dot on the third interval, also
with the apex and a narrow irregular biarcuate fascia near apical
third pale; under surface piceous, the epipleura, hypomera and legs
pale piceous-brown; head three-fourths as wide as the prothorax, the
sulci very shallow, the eyes moderately prominent; antennae moder-
ate, piceous, the bases of the joints paler, the first three testaceous,
blackish above; medial joints slightly more than twice as long as
wide; prothorax two-fifths wider than long, the sides strongly rounded
and only finely reflexed, oblique and evidently sinuaite behind, the
angles more than right, sharp; impressions very feeble, the stria fine;
foveae small, deep, linear, the carina distinct, one-fourth the total
T. L. Casey, Mem. Col. VIII, Oct. 1918.

98 MEMOIRS ON THE COLEOPTERA

length; disk more shining medially than laterally; elytra elongate,
oblong-oval, three-fifths longer than wide, less than one-half wider
than the prothorax, gradually ogival behind; striae rather fine, not
impressed, entire, the punctures fine, moderately close, traceable to
the declivity; foveae small, before basal and behind apical third.
Length (9 ) 5.0 mm.; width 1.65 mm. California (San Diego).

extricatum n. sp.

Form narrower, rather convex, black, with moderate alutaceous lustre,
the elytra piceous, with traces of paler markings of the same char-
acter as in the preceding, but much more retracted; inflexed sides
and legs testaceous-brown, the under surface black; head smaller,
nearly three-fourths as wide as the prothorax, with feeble sulci and
moderate eyes; antennae slender, of more uniform black than in the
preceding, the basal joint rufous beneath, the medial joints not dis-
tinctly more than twice as long as wide; prothorax shorter, fully
one-half wider than long, the sides strongly but more anteriorly
rounded, oblique in nearly basal half, becoming faintly sinuate only
at the angles; margins moderately reflexed; apex almost truncate;
surface with some wavy rugulosity, the impressions feeble; fovese
moderately deep, equal in length to the carina and less than a fourth
the total length; elytra oblong-oval, more than one-half longer than
wide, two-fifths wider than the prothorax, the striae entire, distinctly
impressed, fine apically, the punctures moderately separated, strong
and more conspicuous basally; foveae only slightly before basal and
behind apical third; third interval wider than the others. Length
(9) 4.0 mm.; width 1.3 mm. California (Tehatchapi Pass),—
Wickham caudex n. sp.

Form somewhat ventricose, less convex, much smaller in size, slightly
viridi-aeneous and dull anteriorly, the elytra piceous, each with a
basal spot, a short fascia at basal third, formed by spots on intervals
three to five, a wider but similarly formed fascia at apical third,
from the margin to interval five, and the apex, pale; under surface
and legs as in extricatum; head nearly four-fifths as wide as the pro-
thorax, with prominent eyes and broad, moderately deep sulci; an-
tennae slender, nearly as in caudex, the medial joints barely twice as
long as wide; prothorax short, one-half wider than long; sides mod-
erately rounded in apical, converging in basal, half, broadly but dis-
tinctly sinuate basally, rather strongly reflexed, the angles nearly
right, sharp; impressions feeble; foveae small, short, narrow and lin-
ear, the carina longer, rather strong, nearly a third the total length;
elytra oblong, less than one-half longer than wide, almost one-half
wider than the prothorax, broadly parabolic in apical third; striae
rather fine but strong, impressed suturally, the seventh a row of
fine punctures, becoming a distinct stria apically; punctures small
but deep and rather close-set; foveae near basal fourth and apical
third. Length (9) 3-6 mm.; width 1.25 mm. Arizona (near Ben-
son),— Dunn pimanum n. sp.

20 — Sides of the prothorax very distinctly and more broadly sinuate
basally, sometimes almost parallel for some distance before the
angles 21

BEMBIDIIISLE 99

Sides rounded virtually to the base, very faintly sinuate only at the

angles 22

21 — Body oblong-oval, only moderately convex, rather shining, the an-
terior parts bright viridi-subaeneous and only slightly alutaceous;
elytra aeneo-piceous, marked rather indefinitely with paler as de-
tailed under extricalum; legs rufous, the epipleura flavo-piceous, the
under surface black; head fully three-fourths as wide as the pro-
thorax and nearly as wide as an elytron, with rather prominent eyes,
the sulci not very broad and somewhat deep; antennae rather thick,
piceous, rufous beneath toward base, the medial joints obconic and
slightly more than twice as long as wide; prothorax two-fifths wider
than long, the base slightly wider than the apex, the sides parallel,
broadly and very moderately rounded, gradually oblique and broadly
sinuate basally. rather finely reflexed, the angles sharp and nearly
right; stria very fine, subentire, the impressions very faint; foveae
deep but small, linear, the carina almost twice as long, strong, some-
what over one-fourth the total length; elytra oblong, parallel, barely
one-half longer than wide, less than one-half wider than the pro-
thorax, rounded behind; striae entire, rather fine, barely visibly im-
pressed, very fine behind, the punctures fine, moderately separated;
foveae near basal and apical third. Length (cf ) 4.4 mm.; width 1.6

mm. California (San Diego) consentaneum Lee.

A« — Almost similar to the preceding but somewhat narrower and more
elongate, the head equally as well developed but with less prom-
inent eyes, also broader and deeper anterior part of the sulci; pro-
thorax nearly similar but barely two-fifths wider than long; ely-
tra more elongate, nearly three-fifths longer than wide and more
gradually rounded behind, the striae finer and less distinctly punc-
tate, except basally, the foveae more widely separated. Length
(cf 9 ) 3.8-4.7 mm.; width 1.4-1.72 mm. California (Sta. Bar-
bara),— Dunn barbarae n. subsp.

Body much broader, nearly similar in color and lustre; head larger, with
more prominent eyes, wider than an elytron, the sulci broader and
shallower; antennae nearly similar in length and coloration but
thicker, the medial joints more strongly obconic, more than twice
as long as wide; prothorax larger and much broader, one-half wider
than long, widest slightly before the middle, the finely reflexed sides
much more broadly and evenly rounded, more rapidly oblique
basally, becoming almost parallel in basal fifth or sixth; stria more
nearly entire, the impressions subobsolete; foveae and carina similar
in size and proportions; elytra shorter, barely one-half longer than
wide and only a third wider than the prothorax, more obtusely
rounded behind; striae very fine, similarly unimpressed and even
more finely and less closely punctulate, the third interval slightly
wider than the others; foveae before basal and behind apical third.
Length (9) 4.2 mm.; width 1.5 mm. California (eastern shore of

San Francisco Bay) derisor n. sp.

22 — Eyes only moderate in size but very prominent 23

Eyes somewhat larger as a rule, but only moderately prominent 24

23 — Form elongate-suboblong, moderately convex, black, alutaceous and

ioo MEMOIRS ON THE COLEOPTERA

feebly aenescent anteriorly, the elytra dark piceous, with very nubi-
lous paler markings at the base of each and toward the sides near
basal and apical third; under surface black, the abdomen rufous pos-
teriorly; legs and epipleura dark rufous; head fully three-fourths as
wide as the prothorax and wider than an elytron, the sulci very
moderate; antenna? notably slender, piceous-black, obscurely rufous
basally, with the medial joints not quite three times as long as wide;
prothorax about as wide at base as at apex, the sides broadly and
very evenly arcuate almost throughout, about straight at the min-
utely prominent basal angles, the anterior bluntly rounded, the
margins rather broadly reflexed; impressions subobsolete, the stria
short and fine; foveae deeply but not abruptly impressed, linear, the
carina strong, longer, more than a fourth the total length; elytra
nearly three-fifths longer than wide, two-fifths wider than the pro-
thorax, gradually ogival behind, the striae entire, very fine, unim-
pressed, very finely and closely punctate; third interval not notably
wider, the foveae small, before basal and near apical third. Length
(9 ) 4-7 mm.; width 1.6 mm. California (San Diego), cernens n. sp.

Form nearly similar but very much smaller in size, rather convex, the
coloration and lustre almost similar, the elytra piceous-black, with
almost similar nubilous markings; head almost as in cernens, but
not quite so large, barely as wide as an elytron; antennae slender,
blackish, obscurely rufous basally, the medial joints between two
and three times as long as wide; prothorax shorter, fully one-half
wider than long, widest at apical two-fifths, the sides rather strongly
rounded, less so basally, becoming just visibly sinuate at the angles,
which are right and sharp; margins well reflexed; impressions rather
distinct, the abbreviated median stria well impressed; foveae mod-
erate, impressed, linear at the bottom, the carina distinct; elytra
fully one-half longer than wide, two-fifths wider than the prothorax,
very gradually strongly rounded behind and parallel, with distinctly
arcuate sides; striae entire, not very fine and, toward the suture,
somewhat deeply impressed, the punctures basally rather strong,
becoming rapidly fine and scarcely traceable behind the middle;
foveae strong, generally before basal and near apical third, the third
interval somewhat wider than the others, all the intervals toward
the suture convex. Length (cf 9 ?) 3-4-3-6 mm.; width 1.25-1.3
mm. Arizona (probably southern) latebricola n. sp.

24 — Prothorax larger and broader, about three-fourths as wide as the
elytra or more. Body oblong-oval, rather convex, shining, the head
and sides of the pronotum more or less alutaceous, black, with faint
aeneous lustre, the elytra piceous, with faint paler markings somewhat
as in extricatum, this being the general type form of markings in
this subsection; legs and epipleura piceo-rufous; head rather small,
two-thirds as wide as the prothorax and narrower than an elytron;
antennae blackish, obscurely rufous basally, rather thick, the medial
joints not quite twice as long as wide; prothorax one-half to three-
fifths wider than long, the sides rounded evenly to just before the
basal angles, where they become feebly sinuate; impressions very
faint, the stria distinct, not quite entire; foveae deep, short, the carina

BEMBIDIIN^E 101

longer, strong, about a fourth the total length; elytra one-half longer
than wide, parallel, with evidently arcuate sides, obtusely rounded
at apex, about a third wider than the prothorax; striae fine, unim-
pressed, distinctly and rather closely punctate basally, the punc-
tures gradually obsolete a little behind the middle; third interval
but slightly broadened; foveae rather strong, before basal and some-
what behind apical third. Length (cf 9 ) 3.6-3.8 mm.; width 1.33
-1.4 mm. California (Tehatchapi Pass), — Wickham.

expositum n. sp.

Prothorax relatively almost as in expositum, fully three-fourths as wide
as the elytra. Body much more elongate, the coloration nearly
similar throughout; head longer and larger, the eyes very much less
prominent, the sulci similarly deep and parallel; antennae fuscous,
barely two-thirds as long as the elytra, even more slender basally
and incrassate distally than in expositum, the medial joints more
than twice as long as wide; prothorax nearly similar in form and
structure but relatively very much less wider than the head; elytra
almost three-fourths longer than wide, scarcely a third wider than
the prothorax, very gradually and more narrowly parabolic at apex,
parallel, with arcuate sides and with more basally exposed humeri;
striae and punctures almost similar; foveae much more widely sep-
arated, before basal and behind apical third, the third interval not
much broader than the others. Length 4.2 mm.; width 1.3 mm.

California (San Diego) jacobianum n. sp.

Prothorax never relatively so wide as in expositum 25

25 — Outline somewhat ventricose, the elytra relatively broader. Black,
viridi-aeneous and rather alutaceous anteriorly, the elytra piceous,
with nubilous paler marking at base, at the sides in basal third and
on the third interval near the base, also with a nubilous biarcuate
fascia near apical fourth; legs and epipleura pale rufous; head rather
well developed, the antennae moderate, fuscous, rufous beneath
basally, the medial joints between two and three times as long as
wide; prothorax very nearly one-half wider than long, equally wide
at base and apex, the sides evenly and moderately rounded, becoming
feebly sinuate at the right, prominent and sharp basal angles; mar-
gins finely reflexed; surface with some rugulosity at base, the impres-
sions almost obsolete, the stria very fine; foveae small, deep, about
half as long as the distinct carina, which is more than a fourth the
total length; elytra scarcely one-half longer than wide, oblong, two-
fifths wider than the prothorax, rather obtusely rounded behind,
the striae not very fine, more or less impressed, entire, the punctures
very distinct, especially toward base, and rather well separated;
third interval much wider than the others; foveae rather before basal
and behind apical third. Length (cT) 4.4 mm.; width 1.8 mm.

California (San Francisco) formale n. sp.

A — Similar to formale but with relatively somewhat larger prothorax,
the body smaller; prothorax with the sides more strongly arcuate
and more distinctly reflexed, otherwise nearly similar, except that
the apex is rather more distinctly narrower than the base; elytra
similar in outline and maculation, but with the striae unimpressed

IO2 MEMOIRS ON THE COLEOPTERA

and with the fine punctures not so strong basally and rather more
close-set throughout; third interval distinctly wider than the
others. Length (cf) 4.0 mm.; width 1.5 mm. California (San
Diego) reconditum n. subsp.

Outline narrower and more elongate, less ventricose 26

26 — Form elongate-oval, rather convex, shining, the head but slightly
alutaceous, black, with greenish lustre, the elytra piceous, each with
a nubilous pale spot at base and with an imperfect nubilous fascia
near apical third; under surface black, the legs and epipleura pale
testaceous; head well developed, fully three-fourths as wide as the
prothorax and as wide as an elytron, the sulci extremely shallow;
antennae fuscous, rufous beneath at base, the medial joints between
two and three times as long as wide; prothorax only two-fifths wider
than long, the sides rather strongly, subevenly arcuate and moder-
ately reflexed, becoming feebly sinuous for some distance before the
minutely prominent basal angles; surface with some transverse wavy
rugulosity, the impressions very feeble, the stria fine, not quite en-
tire; foveae and carina as in the preceding; elytra more than one-half
longer than wide, not quite one-half wider than the prothorax, grad-
ually parabolic behind; striae very fine, unimpressed, the punctures
very fine, well separated, subequal, traceable to the declivity; third
interval barely at all wider than the others, the small foveae before
basal and behind apical third. Length (cf 9 ) 3.8-4.2 mm.; width
1.35-1.6 mm. California (San Francisco and Alameda). Descrip-
tion taken from the male; the female is rather smaller and nar-
rower, with the antennae less elongate franciscanum n. sp.

Form rather narrower than in franciscanum and slightly more depressed,
shining, the greenish anterior parts somewhat alutaceous; color as
in franciscanum, except that the piceous elytra have more pallid
maculation toward and surrounding the humeri, and that the trans-
verse posterior biarcuate rufous fascia is entire and more conspicu-
ous than in any other species of the subsection; apices pale; head
moderate, but as wide as an elytron; antennae fusco-testaceous
throughout, thicker than in any of the allied species, the medial
joints barely twice as long as wide; sulci rather narrow, moderately
deep; prothorax shorter than in franciscanum, one-half wider than
long, the sides similar but not evidently sinuate, except at the min-
utely prominent angles; surface similar, except that the impressions
are rather more obvious; elytra long, fully three-fifths longer than
wide, scarcely two-fifths wider than the prothorax; striae very fine,
unimpressed, the punctures fine and widely separated; third inter-
val much wider than the others, the foveae as in franciscanum.
Length (cf ) 3.8 mm.; width 1.4 mm. California (Alameda).

ornatellum n. sp.

Form narrow, very moderately convex, smaller in size, shining, the head
but slightly alutaceous, black, not metallic; elytra piceous, paler at
the sides in basal half, extending inwardly to the second stria, with,
diminishing width, and inclosing a piceous spot at the anterior dor-
sal fovea, also with a wide nubilous fascia near apical fourth, widely
interrupted at the suture, the anterior pale area sometimes united

BEMBIDIIN^E 103

with it at the margin; legs and epipleura rufous; head moderate,
with rather deep sulci; antennae rather short and thick, fusco-tes-
taceous, the medial joints twice as long as wide; prothorax one-half
wider than long, the well rounded sides becoming feebly sinuate for
a sensible distance before the prominent, right and sharp hind
angles; surface as in the preceding species of this subsection; elytra
one-half longer than wide, one-half wider than the prothorax, grad-
ually parabolic behind, the fine entire striae never more than feebly
impressed and having fine, moderately separated punctures, indis-
tinct behind apical third; foveae before basal and behind apical
third, the third interval but very slightly wider than the others.
Length (c? 9 ) 3.2-4.0 mm.; width 1.2-1.35 mm. California (San

Diego). Six examples procax n. sp.

27 — Base of the prothorax slightly narrower than the apex. Moderately
elongate; head and lateral and basal part of the pronotum dull' and
alutaceous, black, with feeble viridi-seneous lustre; elytra nearly
black, moderately shining, each with a basal spot, prolonged on the
third and fifth intervals, a fascia rapidly attenuated inwardly near
basal third, another irregularly arcuate near apical third, the apex
and a spot on the third interval before the middle, pale subflavate;
under surface black, very shining, the abdomen with nubilous lat-
eral spots, the epipleura flavate, the legs darker, rufous; head well
developed, with notably prominent eyes; antennae very slender,
piceous, obscurely rufous basally, the medial joints nearly three
times as long as wide; prothorax three-fifths wider than long, the
sides strongly, subevenly arcuate, deeply sinuate behind, becoming
subparallel in basal fifth or sixth, evenly and moderately reflexed;
impressions feeble, subrugulose, the stria fine, not entire; foveae
broadly shallow, with a deep short linear impression, the carina longer
than the fovea and distinct; elytra one-half longer than wide, two-
fifths wider than the prothorax, parallel, with broadly arcuate sides;
striae equal, entire, fine, barely visibly impressed, the punctures fine
and close-set, traceable to the declivity; foveae at one-third and three-
fifths, the third interval moderately broadened. Length (9) 4.3

mm.; width 1.65 mm. California (Sta. Cruz) operosum n. sp.

Base of the prothorax never narrower than the apex. ... .28

28 — Body above the average of the subsection in size. Oblong, colored
throughout very nearly as in the preceding, but with the elytral
markings less sharply defined, sometimes rather nubilous; head well
developed, with prominent eyes and distinct sulci, moderately dull;
antennae similar in color, still longer, slender, the medial joints more
than three times as long as wide; prothorax larger, one-half wider
than long or less, the parallel sides evenly but less strongly arcuate,
gradually becoming feebly sinuate toward the right and sharp
angles; margins rather strongly reflexed; surface nearly as in the
preceding, both the linear part of the foveae and the carina longer,
the latter more than a fourth the total length ; elytra larger and rather
more than one-half longer than wide, similar in outline, a third to
two-fifths wider than the prothorax, the striae finer and wholly un-
impressed, the punctures fine, close, traceable to the declivity; sev-

104 MEMOIRS ON THE COLEOPTERA

enth stria similar to the others, as usual in this group; foveae before
basal and behind apical third, much more widely separated than in
operosum. Length (icf, 79) 4.5-5.2 mm.; width 1.7-2.0 mm.
California (San Francisco and northward along the coast). [ Nota-
phns flammnlipennis Mots.] indistinctum Dej.

Body much smaller in size 29

29 — Head smaller, with less prominent eyes, not as wide as an elytron,
the elytra without obvious basal pale spot. Form oblong-oval,
more convex than usual, black, the anterior parts subopaque and
with feeble olivaceous lustre; elytra black, each with a transverse
fascia of pale lines near basal and apical third, the anterior broad
at the margin and rapidly attenuated inwardly, the posterior oblique,
not reaching the suture; third interval with two pale spots — before
and behind basal third, the extreme apex also pale: under surface
black, the legs and epipleura pale; head nearly four-fifths as wide
as the prothorax, with somewhat broad and deep sulci; antennae
black, rufous beneath at base, three-fourths as long as the elytra,
the medial joints barely twice as long as wide; prothorax rather small,
nearly one-half wider than long, widest barely before the middle,
the sides broadly, subevenly rounded, oblique and feebly sinuate
basally, finely reflexed; surface nearly smooth, dull, the impressions
subobsolete, the stria fine, not quite entire; foveae rugose, rather
broadly impressed, oval, moderately deep, the carina rather short,
equal to the fovea, distinct; elytra less than one-half longer than
wide, nearly one-half wider than the prothorax, "circularly obtuse
at tip, the parallel sides broadly arcuate; strife rather fine, feebly
impressed, the punctures minute, obsolete near posterior third;
foveae near basal and apical third. Length (9 ) 3.2 mm.; width 1.3
mm. Oregon (Corvallis). Moznette, 1909 debiliceps n. sp.

Head larger, very well developed, with notably prominent eyes, fully as
wide as an elytron; elytra always with pale basal spots 30

30 — Form moderately elongate, suboval, slightly convex, colored nearly
as in the preceding, but less deep black and with rather more aeneous
lustre; elytra with sharply marked maculation of short lines, forming
two fasciae and a pale apex, more developed than in the preceding
but in general similar, excepting the distinct pale basal spot; head
nearly four-fifths as wide as the prothorax, with distinct sulci; an-
tennae nearly similar but longer, slender, the medial joints more than
twice as long as wide; prothorax broader, fully one-half wider than
long, otherwise much as in debiliceps, though less convex as a rule;
elytra similar but more elongate, somewhat more than one-half
longer than wide, and only two-fifths wider than the prothorax,
the striae not very fine and slightly impressed, the punctures dis-
tinct basally, rapidly disappearing behind the middle, the foveae
slightly before basal and near apical third, the third interval dis-
tinctly wider than the others. Length (cf 9 ) 3-0-3.7 mm.; width
1.2-1.3 mm. California (San Jose, Mt. Diablo and Sonoma Co.).
[Ochthedromus tessellatus \ Lee. — San Diego; Bemb. xanthostictum
G. & H.] conspersum Chd.

Form broader and slightly larger, moderately convex, the anterior parts

BEMBIDIIN.E 105

alutaceous but less opaque than in conspersum, black, with more
pronounced greenish lustre; elytra shining, maculate in nearly the
same way; head three-fourths as wide as the prothorax or more, the
antennae nearly similar; prothorax larger and broader, but other-
wise nearly similar, except that the sides are not quite so strongly
rounded and are more reflexed; elytra even more elongate, nearly
three-fifths longer than wide, more gradually rounded and less ob-
tuse behind, the striae similar but somewhat more impressed and
with the small punctures more equal among themselves, easily trace-
able to the declivity and relatively less strong basally; foveae at
basal and apical third, the third interval relatively less broad as a
rule. Length (cf 9 ) 3.0-4.0 mm.; width 1.2-1.4 mm- British
Columbia (Kamloops and from an unrecorded locality).

imitator n. sp.

Form oblong-suboval, moderately convex, not very shining, black, with
alutaceous greenish lustre anteriorly; elytra blackish, with fasciae and
isolated spots nearly as in conspersum, but rather less extensive;
head three-fourths as wide as the prothorax, scarcely as wide as an
elytron, with short and rather deep sulci; antennae moderate, piceous,
gradually testaceous basally, the medial joints slightly more than
twice as long as wide; prothorax shorter than in the two preceding,
less than a third as long as the elytra and three-fifths wider than
long, the moderately rounded sides oblique but only feebly sinuate
posteriorly, the angles right and sharp; impressions very feeble, the
stria fine, not entire; foveae and surrounding surface rugulose, mod-
erate, the carina longer, oblique, strong and nearly a third the total
length; elytra barely one-half longer than wide, two-fifths wider
than the prothorax, parabolic behind, the parallel sides broadly arcu-
ate, gradually rounding at the humeri; striae rather fine, scarcely
impressed, the fine punctures disappearing a little behind the mid-
dle, those of the equally deep lateral striae continuing further pos-
teriorly; foveae near basal and apical third. Length (9) 3-7~3-9
mm.; width 1.4-1.55 mm. Utah (Provo), — Wickham.

provoanum n. sp.

31 — Body small in size, in this respect and in the sharply marked fasciae
of short lines, resembling the preceding species 32

Body larger, the almost wholly pale elytra with a submedian and sub-
apical dark fascia 43

32 — Form oblong, not notably ventricose 33

Form ventricose, the prothorax much narrower than the elytra, which
are deficient in anterior ornamentation as a rule 41

33 — Head well developed, with notably prominent eyes, as wide as an
elytron or wider 34

Head noticeably small, not or scarcely as wide as an elytron 39

34 — Body subparallel, the prothorax but little narrower than the elytra.
Blackish, with viridi-aeneous and only feebly alutaceous lustre an-
teriorly, the shining elytra piceous, the anterior spots obsolete in
great measure, but with a yellowish posterior fascia, broadly inter-
rupted at the suture, the under surface piceo-rufous, the legs flavo-
testaceous; head nearly four-fifths as wide as the prothorax, the

io6 MEMOIRS ON THE COLEOPTERA

sulci narrow, rather deep and sinuous; antennae slender, fuscous,
pale basally, the medial joints nearly three times as long as wide;
prothorax large, nearly one-half wider than long, wider at base than
at apex, the subevenly and moderately rounded sides rather broadly
reflexed basally, finely so apically, slightly oblique posteriorly, be-
coming feebly sinuate at the right and sharp angles; anterior im-
pression obsolete, the posterior feeble, the stria very fine; foveae
deep, linear, nearly as long as the distinct carina; elytra fully one-
half longer than wide, barely a third wider than the prothorax,
parallel, gradually circularly rounded behind; striae fine, scarcely
impressed, the punctures not coarse but distinct, rather close-set,
evident nearly to the declivity, those of the seventh series obsolete
at about the middle; foveae near two and four sevenths. Length
(a71 9 ) 3-3-3-7 mm.; width 1.25-1.4 mm. Illinois (Highland Park).

mon stratum n. sp.

Body not subparallel, the prothorax more evidently narrower than the
elytra 35

35 — Antennae long and very slender, the medial joints scarcely less
than four times as long as wide. Body slightly stout, rather convex,
black, with somewhat greenish alutaceous lustre anteriorly, the
elytra blacker, with feebly defined, moderately pale markings, a
long streak on the eighth interval, shorter spots on intervals four
to seven, near basal third, sometimes obsolete, and a short external
subapical fascia, the apex more indefinitely pale, the basal pale spot
reduced to a very small area on the basal slope; under surface black,
the legs rufous; head large, fully four-fifths as wide as the prothorax,
the sulci deep; antennae fuscous, in greater part rufous basally, as
long as the elytra; prothorax one-half wider than long, the sides
subprominently rounded just before the middle, straighter apically,
similarly oblique basally, becoming broadly and only just visibly
sinuate toward the very sharp and right angles; impressions very
feeble, slightly rugulose, the stria extremely fine; foveae large, rugu-
lose, with a short deep linear bottom, the carina strong, a fourth the
total length; elytra parallel, gradually ogival behind, two-fifths
wider than the prothorax, the striae rather coarse, not much im-
pressed, the punctures strong and close basally, traceable to the
declivity, the foveae before basal and at apical third. Length (cf 9 )
3.6-4.0 mm.; width 1.25-1.45 mm. Indiana fenisex n. sp.

Antennae not quite so long, the medial joints never more than three times
as long as wide 36

36 — Form moderately stout, slightly convex, colored nearly as in the
preceding, the anterior parts less greenish and blacker; elytra gen-
erally with a small lateral fascia near basal third, and with a very
small and more anterior spot on the third interval, the subapical
fascia from the sides attenuated to about the second interval, usu-
ally much more conspicuous than the anterior, the apex also pale;
head with rather deep straight sulci, the antennae slender, colored
as in fenisex, but much shorter than the elytra, the medial joints
between two and three times as long as wide; prothorax one-half
wider than long, the sides strongly, subevenly rounded, becoming

BEMBIDIIN.E icy

conspicuously sinuate basally, sometimes almost parallel for some
distance before the angles; impressions smooth, the anterior scarcely
traceable, the posterior distinct; foveae short, deep, linear, the carina
much longer and strong; elytra two-fifths wider than the prothorax,
the striae moderate, feebly impressed, feebler than in fenisex and
more finely punctate, the punctures rather rapidly strong basally;
foveae at two and four sevenths. Length (cf 9 ) 3-8 mm.; width
1.4 mm. Rhode Island, Xew York and Pennsylvania to Iowa and
Lake Superior posticum Hald.

Form broader, a little larger in size, similar in coloration, the anterior
parts rather opaque; elytra more maculate, having on each a basal
spot, a fascia on intervals five to eight near basal third, two short
lines on the third interval — before and behind the fovea, a fascia
near posterior third from the fourth interval to the margin, and the
apex, pale; legs rufous; head not quite so large as in fenisex, nearly as
in posticum, fully three-fourths as wide as the prothorax, the anten-
nae rather longer than in posticum, similarly colored, the medial
joints three times as long as wide, or very nearly; prothorax narrower,
two-fifths wider than long, smaller and narrower when compared
with the elytra than in posticum, otherwise nearly similar, the sides
distinctly sinuate at base; elytra broader, with finer and almost un-
impressed striae, distinctly punctate basally, one-half wider than the
prothorax; foveae fine, similarly placed. Length (cf 9 ) 4.0-4.25
mm.; width 1.35—1.55 mm. Indiana and Wisconsin (Bayfield).

plectile n. sp.

Form nearly as in posticum but with the prothorax smaller, and differing
from that or any of the three preceding in being widest near anterior
third, where the sides are well rounded, thence oblique and nearly
straight posteriorly, becoming just visibly and very broadly sinuate;
color and maculation nearly as in posticum, except that there are
more anterior elytral spots, these being almost exactly as in plectile;
legs obscure rufous; head nearly four-fifths as wide as the prothorax,
with very abruptly and conspicuously prominent eyes; antennae
nearly as in posticum, the medial joints not quite three times as
long as wide; prothorax less than one-half wider than long, equally
wide at base and apex, the angles slightly obtuse but sharp; margins
moderately reflexed; impressions nearly obsolete, the foveae and car-
ina as in the preceding species; elytra in outline, strong striation
and rather strong close-set punctures, almost exactly as in fenisex,
the prothorax, however, entirely different; the elytra here are about
one-half wider than the prothorax. Length (cf ) 3-9 mm.; width
1.35 mm. A single specimen, without indication of locality but un-
doubtedly from somewhere in the Atlantic regions, .mediocre n. sp.

37 — Antennae longer and more slender, the medial joints between two
and three times as long as wide; surface more convex. Body oblong-
oval, noticeably convex, black, the anterior parts somewhat green-
ish and more or less alutaceous; elytra with more pallid maculation
than in any of the preceding, this about equaling the black in area,
the basal spot, apex and two fasciae situated as usual, also with two
elongate spots in the usual situation on the third interval; under

io8 MEMOIRS ON THE COLEOPTERA

surface black, the legs rufous; epipleura pale; head two-thirds as
wide as the prothorax, with narrow and rather deep sulci and large
but only moderately prominent eyes; antennae fuscous, in part tes-
taceous basally; prothorax two-fifths wider than long, the sides
rather strongly rounded before the middle, broadly and distinctly
sinuate basally, the angles sharp, right or rather more; impressions
very feeble; stria not entire and fine, but deeply and sharply im-
pressed; foveae large, linear at the bottom, the strong carina nearly
a third the total length; elytra oblong-oval, barely one-half longer
than wide, a third to two-fifths wider than the prothorax; striae
coarse, more or less impressed, the punctures close-set, rather coarse
and conspicuous toward base; foveae near basal and apical third.
Length (cf 9 ) 3.4-4.2 mm.; width 1.2-1.6 mm. Pennsylvania, New
York, Indiana and Iowa. [Bemb. variegatum Lee. nee Say].

patruele Dej.

Antennae not so long, much shorter than the elytra, the medial joints
about twice as long as wide; surface less convex, form narrower, the
striae finer and less impressed 3&

38 — Form oblong, feebly convex, in color and lustre nearly as in patruele,
but with the knees somewhat darker; elytra with the whitish macu-
lation, covering almost as much area as the black ground, more
sharply defined and with the pale lines composing the fasciae more
defined by the black striae than usual, disposed as in patruele; head
similar but inserted almost to the very large eyes; antennae blackish,
red toward base only on the under surface of the joints; prothorax
one-half wider than long, the sides broadly, evenly rounded to a
short feeble sinuation just before the sharp basal angles; impressions
feeble and very indefinite, the stria extremely fine; foveae and carina
nearly as in the preceding; elytra parallel, more obtusely rounded
at tip, slightly longer, two-fifths wider than the prothorax; striae
rather fine, barely at all impressed, distinctly punctate to near the
apex; third interval much wider than the others, the foveae before
basal and near apical third. Length (cf ) 3.6 mm.; width 1.35 mm.
Wisconsin (Bayfield), — Wickham graphicum n. sp.

Form less depressed and not quite so narrow, the elytra with more re-
stricted maculation, black, shining, the head feebly alutaceous; ely-
tra with small spots, a dash on the fifth interval at base, two small,
as usual, before and behind the fovea on the third, the short anterior
fascia feeble, with a long streak on the eighth interval, the posterior
fascia narrow, irregularly biarcuate, the apical pale spots composed
each of three dashes; head as in graphicum but with less prominent
eyes, the antennae similar; prothorax one-half wider than long, the
evenly rounded sides less strongly arcuate, becoming very gradually
and only just visibly sinuate toward the angles, which are slightly
obtuse, though not rounded; surface throughout nearly as in graphi-
cum; elytra shorter, barely one-half longer than wide, obliquely
ogival in apical third, two-fifths wider than the prothorax, almost
similarly striate and punctate, but with the third interval only

BEMBIDIIX/E 109

slightly wider than the others; foveae near basal and apical third.
Length (cf) 3.7 mm.; width 1.35 mm. Colorado (Boulder Co.).

retractum n. sp.

39 — Sides of the prothorax deeply sinuate just before the angles, which
are acute and somewhat prominent; elytral striae strong apically as
well as discally. Form rather broad and convex, black, shining,
the anterior parts somewhat alutaceous and greenish; elytra with
two minute spots on the third and one on the fifth interval near an-
terior third, each also with an oblique external fascia near apical
third and the apex, indefinitely, pale; legs pale piceo-flavate; head
large, with prominent eyes and rather deep sulci; extending obliquely
outward behind, four-fifths as wide as the prothorax and wider than
an elytron; antennae fuscous, paler basally, slender, the medial joints
nearly three times as long as wide; prothorax barely one-half wider
than long, the sides subprominently rounded just before the middle,
oblique posteriorly to the rather abruptly formed sinus; impressions
very feeble, the stria short and fine; foveal region rugulose, the foveae
short, deep, linear, scarcely more than half as long as the strong
carina; elytra nearly one-half longer than wide, a little less than one-
half wider than the prothorax and obliquely ogival in apical third;
striae not very fine, deep and conspicuous but not impressed, the
punctures close-set and strong basally, disappearing slightly behind
the middle; foveae near basal and apical third. Length (cf ) 3-6 mm.;
width 1.4 mm. Illinois (Highland Park) exclusum n. sp.

Sides of the prothorax arcuately oblique behind, becoming gradually and
faintly sinuate just before the angles, which are right; striae feebler
on the declivity 4°

40 — Body stout, moderately convex, subopaque anteriorly, the elytra
rather shining, black, the elytra without anterior pale markings,
except a nubilous streak on the eighth interval and a shorter one
on the seventh, each also with a nubilous external spot near the
apex, the latter also pale; legs rufous, the femora slightly infuscate,
except at apex; head rather large, with prominent eyes, the sulci
moderately deep; antennae rather long, slender, blackish, rufous
basally beneath, the medial joints between three and four times as
long as wide; prothorax one-half wider than long, the sides somewhat
evenly and strongly rounded, widest just before the middle; entire
surface rather dull, the anterior impression subobsolete, the pos-
terior distinct, the stria fine, incomplete; foveae short, deep, the car-
ina twice as long, strong; elytra slightly less than one-half longer than
wide, nearly one-half wider than the prothorax, obtusely rounded
behind; striae fine, unimpressed, the punctures distinct basally,
gradually extinct at the declivity; foveae near basal and apical third.
Length (9 ) 4.2 mm.; width 1.7 mm. Missouri (St. Louis).

intermedium Kirby

Body almost similarly stout, rather convex, shining, the anterior parts
alutaceous but not so dull as in the preceding; elytra each with a
small basal spot, a long streak on the eighth interval, shorter ones
on seven to five, forming a feeble fascia, and with a large, internally
attenuate subapical fascia and a large apical area, pale; legs bright

no MEMOIRS ON THE COLEOPTERA

and clear rufous throughout; head well developed, \vith prominent
eyes, the sulci deep, oblique posteriorly; antennae fuscous, in great
part rufous basally, only moderately slender, the medial joints not
quite three times as long as wide; prothorax one-half wider than
long, a little less (cf), in outline nearly as in the preceding, the sur-
face also similar, except that the foveae and carinae are about equal
in length; elytra distinctly less than one-half longer than wide, one-
half wider than the prothorax, circularly rounded behind, the striae
rather fine, barely at all impressed, gradually very distinctly punc-
tate basally, the punctures posteriorly so fine as to be barely trace-
able; third interval but little wider than the others; foveae somewhat
before both basal and apical third. Length (cf 9 ) 3.6-4.0 mm.;
width 1.35-1.55 mm. Rhode Island and New York (lower Hudson
Valley). Three examples marcidum n. sp.

41 — Form moderately stout and convex, very shining, the anterior parts
metallic green and without trace of alutaceous lustre; elytra pale
flavo-testaceous, with a biangulate transverse darker fascia at about
the middle, and another between this and the apex, the latter fascia
shorter, not extending much beyond the fourth or fifth interval; the
anterior fovea lies within a small blackish spot, exterior to which
there is some feeble shading, and also some around the scutellum;
under surface black, the abdomen partially rufous, the legs and epi-
pleura pale flavo-testaceous; head moderate, with rather narrow,
deep sulci; antennae long, slender, fuscous distally; prothorax one-
half wider than long, the strongly and subevenly rounded sides be-
coming sinuate basally and subparallel for a short distance before
the angles; base depressed; stria very fine; foveae small, deep, sub-
linear, the carina strong and much longer; elytra one-half longer than
wide and more than one-half wider than the prothorax; gradually
obtusely ogival behind; striae somewhat coarse and moderately im-
pressed; punctures rather coarse and deep basally, traceable to the
declivity, the seventh stria strong and entire, like the others; foveae
near basal and apical third. Length (d71 9 ) 4-7~5-4 mm.; width 1.8
-2.1 mm. Illinois (Cairo) and Montana (Glendive), — YVickham.
Five examples dorsale Say

Form stouter and more convex, much less shining, the head distinctly
and the pronotum feebly alutaceous, black, with feeble viridi-aeneous
lustre, the elytra pale brownish, darker than in dorsale but with the
same darker markings, except that there is scarcely any shading
outside the anterior discal foveal spot or about the scutellum, the
posterior fasciae rather broader; under surface, legs and antennae
nearly similar in coloration; head larger but not as wide as an ely-
tron, with similarly prominent eyes, the sulci broader, moderately
deep; antennae long and slender, the medial joints nearly four times
as long as wide; prothorax two-fifths wider than long, the sides
slightly more prominently rounded just before the middle, straighter
apically, more gradually sinuate basally, even more strongly re-
flexed; anterior impression more evident, the base somewhat de-
pressed and more strongly punctured; foveae punctate, moderate,
sublinear, as long as the carina, which is relatively somewhat shorter

BEMBIDIIN.E 1 1 1

than in dorsale; elytra shorter and broader, less than one-half longer
than wide and fully three-fourths wider than the prothorax; striae
coarse and deeply impressed, coarsely and conspicuously punctate
toward base, the punctures extinct rather before the second fovea;
third interval more decidedly wider than the others; fovese more
widely separated, near basal and apical fourth. Length (d71 9 ) 4.6
-5.5 mm.; width 1.8-2.2 mm. Pennsylvania (Harrisburg and Pitts-
burgh) and Indiana. Fifteen examples. [Bemb. postfasciatum Ham.].

variegatum Say

42 — Sides of the prothorax oblique but not at all sinuate basally 43

Sides of the prothorax becoming feebly, though evidently, sinuate for a
very short distance before the basal angles 44

43 — Body deep black, convex, polished throughout, with feeble subaen-
eous lustre; legs black, the coxse piceous; head moderate, with large
eyes, two-thirds as wide as the prothorax, the sulci narrow and deep,
parallel, outwardly curved and extinct posteriorly; antennae rather
thick, black throughout, not three-fourths as long as the elytra,
the medial joints twice as long as wide; palpi black; prothorax large,
a third wider than long; base rather wider than the apex; sides very
evenly and distinctly rounded, the basal angles obtuse but not
rounded, the apical bluntly rounded; margins evenly and moderately
reflexed; impressions subobsolete, the stria extremely fine; fovese
moderate, rather deep, finely rugulose, much longer than the carina,
.which is very short, fine and feeble; elytra nearly three-fifths longer
than wide, parallel, circularly rounded at tip, only a third wider
than the prothorax, the sides very gradually rounding basally; striae
entire, fine and rather feeble, unimpressed, the seventh evident;
punctures fine and rather well separated, traceable well behind the
middle; fovese small, before basal and behind apical third. Length
(d71 9 ) 4.5-5.2 mm.; width 1.6-1.9 mm. Utah (Provo), — YVickham.

obtusangulum Lee.

Body much smaller and more slender, but similar in coloration and
lustre throughout, the legs differing in being piceo-rufous; head and
antennse nearly similar, the prothorax shorter and more transverse,
two-fifths wider than long, otherwise as in obtusangulum, except
that the carina at the hind angles is longer, a fourth or fifth the total
length; elytra fully three-fifths longer than wide, only a fourth or
fifth wider than the prothorax, more gradually rounding behind, the
parallel sides broadly arcuate throughout and, medially, not so
straight as in the preceding; punctures and striation nearly similar;
fovese at basal and apical fourth. Length (cT) 3.7 mm.; width 1.25
mm. Washington State cornix n. sp.

44 — Body larger and stouter, subparallel, convex, black, the legs rufo-
piceous; surface polished throughout, with scarcely any metallic
lustre above; head well developed, with deep sulci; antennse piceous,
dark rufous basally, rather thick, two-thirds as long as the elytra,
the medial joints obconic, barely twice as long as wide; prothorax
one-half wider than long, equally wide at base and apex, the sides
subevenly and strongly rounded to the small feeble basal sinus,
the angles sharp and somewhat prominent; margins not broadly

ii2 MEMOIRS ON THE COLEOPTERA

but strongly reflexed; base arcuate; impressions vague and subob-
solete, the stria somewhat deeply impressed, not entire; foveae very
large, shallow and densely rugose, without a deeper sublineate cen-
tral part, the carina distinct, nearly a fifth the total length; elytra
more than one-half longer than wide, rather abruptly, obtusely
rounded at apex, parallel, with nearly straight sides, somewhat rapidly
rounding basally, not a third wider than the prothorax; striae only
moderately fine, very feebly impressed; punctures moderate, sub-
even and extending almost to the apex; foveae behind basal and near
apical fourth, the third interval not noticeably wider than the
others. Length (cf) 4.7-4.8 mm.; width 1.8 mm. Utah (Provo —
Wickham; also from an unrecorded locality) mormon Hayw.

Body smaller and notably more slender, polished, black, with rather
brilliant subaeneous lustre; legs dark rufous; head well developed,
with moderate, prominent eyes and short deep sulci, the posterior
oblique part of which is obsolete; antennae rather short, piceous,
gradually rufous basally, the medial joints twice as long as wide;
prothorax nearly one-half wider than long, widest but little before
the middle, scarcely as wide at base as at apex, the sides strongly,
subevenly rounded to the extremely minute and feeble sinus at the
subprominent and sharp angles, the apical obtuse but only slightly
blunt; impressions subobsolete, the stria distinct, nearly entire;
foveae but feebly rugulose, shallow, with the usual short deep sub-
linear median part, the carina distinct, a sixth the total length;
elytra one-half longer than wide, two-fifths wider than the prothorax,
parallel and but just visibly arcuate at the sides, the latter rather
rapidly rounding basally, the apex rapidly ogival; striae entire, rather
strong but not impressed, rapidly very fine posteriorly, the punctures
somewhat strong, gradually obsolescent posteriorly; third interval
distinctly wider than the others; foveae before basal and behind apical
third. Length (9) 4.2-4.65 mm.; width 1.45-1.7111111. Arizona
(Tucson). Three examples taken by the writer callens n. sp.

Body still smaller and more slender, not quite so convex, polished, black,
the elytra with a feeble piceous tinge; epipleura and legs piceo-rufous;
head much smaller than in any of the preceding, two-thirds as wide
as the prothorax and narrower than an elytron, the sulci deeply im-
pressed, without posterior oblique part; eyes less prominent; antennae
longer and more slender, almost as long as the elytra, piceous, clearer
basally, the medial joints between two and three times as long as wide ;
prothorax less than a third widg r than long, widest but little before the
middle, where the sides become strongly and more subprominently
rounded, arcuate throughout to the minute basal sinus, the angles
slightly obtuse but sharp; base and apex equal, about three-fourths
the maximum width; surface with some feeble wavy rugulation bas-
ally, the anterior impression obsolete, the posterior not strong but
evident; foveae large, shallow and slightly rugose, with a very short
deep part at base; carina very short and fine; elytra more than one-
half longer than wide, fully two-fifths wider than the prothorax,
parallel, circularly rounded behind; striae rather deep and subequal
throughout, not impressed, the punctures distinct almost to the

BEMBIDIIN^E 113

apex; third interval barely at all widened, the fovese near basal and

apical third. Length (cf ) 4.0 mm.; width 1.33 mm. Utah (Provo)

— YVickham fidele n. sp.

45 — Form stout, oblong, moderately convex, very small in size and shin-
ing throughout, piceous-black, the elytra piceous, nubilously pale
at base, along the sides basally and more distinctly at apex, also with
a small marginal pale spot near the apex, connected along the
margin with the apical pale area; epipleura pallescent, the legs piceo-
rufous; head moderate, the head, prothorax and elytra increasing
regularly in width, the sulci rather deep, parallel; eyes only moder-
ately prominent; antennae rather short and thick, fuscous, paler
basally, the medial joints nearly twice as long as wide; prothorax
broad, fully one-half wider than long, widest near apical third, the
sides there strongly rounded, oblique and nearly straight in more
than basal half, the margins moderately reflexed; angles sharp, only
slightly obtuse; base broad and subtruncate; anterior impression
very feeble, the basal distinct, nearly smooth; foveae rather deep,
linear, almost as long as the distinct carina; elytra short, oblong,
only a third longer than wide and a third wider than the prothorax,
wider posteriorly than at base, obtusely subcircular at apex, the
sides broadly arcuate, gradually rounding at the humeri, which are
but narrowly exposed at base; striae slightly abbreviated, rather
coarse and impressed suturally, but fine and wholly unimpressed
laterally; punctures fine externally, strong suturally; foveae near
two and four sevenths. Length (cf) 2.7 mm.; width 1.15 mm.
California (Truckee). A single example, taken by the writer.

novellum n. sp.

46 — Species very small, resembling vile, but with more transverse pro-
thorax; basal transverse impression of the latter having a series of
very coarse punctures 47

Species not so minute, the posterior pronotal impression without an
evident series of punctures 48

47 — Body rather narrowly suboval, convex, polished, black throughout;
legs black, the coxae piceous; head fully four-fifths as wide as the
prothorax and wider than an elytron, the eyes notably prominent;
sulci parallel and rather deep; antennae not very stout, rather short,
piceous-black, the medial joints barely twice as long as wide; pro-
thorax about one-half wider than long, narrower at base than at
apex, widest at anterior two-fifths, where the sides are strongly and
somewhat subprominently rounded, very strongly, arcuately con-
verging thence posteriorly, becoming subparallel and nearly straight
in basal fifth; margins very moderately reflexed; anterior impression
obsolete, the posterior distinct except at the middle; stria very fine,
not entire; foveae small, oval, smooth, very deep and adjoining the
carina, which is strong and a fifth the entire length; elytra more
than one-half longer than wide, about one-half wider than the pro-
thorax, parallel, oblong-oval, with broadly arcuate sides; stria? rather
coarse, feebly impressed, strongly and rather closely punctate, ab-
breviated only on the declivity; seventh stria fine, unimpressed, ex-
T. L. Casey, Mem. Col. VIII, Oct. 1918.

H4 MEMOIRS ON THE COLEOPTERA

tending slightly behind the middle, the eighth extremely close to
the margin as usual in this section; foveae small, near basal fourth
and apical third. Length (9) 2.7 mm.; width i.o mm. Nevada
(Reno) parabile n. sp.

Body as in the preceding but still smaller and narrower, polished, black,
the legs piceous, the femora in great part blackish; head similar;
antennae still shorter and somewhat thicker, the medial joints evi-
dently less than twice as long as wide; palpi similarly black; prothorax
less transverse, a third wider than long, widest nearer apical third,
the sides strongly, more evenly rounded anteriorly, not so strongly
converging to the parallel basal part; surface similar; elytra not over
one-half longer than wide, fully one-half wider than the prothorax,
more gradually ogival behind, the parallel sides feebly arcuate;
striae similar but finer, less impressed and with the somewhat smaller
punctures more widely separated; foveae similarly placed but smaller.
Length (c? 9 ) 2.4-2.6 mm.; width 0.8-0.9 mm- Utah (Provo), —
\Vickham diligens n. sp.

48 — Prothorax widest near apical third, the sides subevenly and strongly
rounded anteriorly, becoming oblique in fully basal half, subparallel
and straight in basal sixth. Body deep black, with very shining
cupreo-aeneous lustre above; legs piceous-black, the coxae and tro-
chanters piceo-rufous; head scarcely three-fourths as wide as the
prothorax, as wide as an elytron, the sulci short, narrow and deep;
eyes moderately prominent; palpi black; antennae black, longer than
in the preceding two species, very nearly as long as the elytra, the
medial joints somewhat more than twice as long as wide; prothorax
nearly one-half wider than long; base barely visibly narrower than
the apex, both transverse; impressions extremely feeble, the stria
very fine, slightly biabbreviated; foveae nearly smooth, broader than
in the two preceding, deep and adjoining the distinct carina; elytra
oblong-oval, more than one-half longer than wide, only two-fifths
wider than the prothorax, the sides parallel, distinctly arcuate;
striae fine, obsolete behind about the middle, not evidently impressed,
the punctures very fine and widely separated even suturally; foveae
fine, near two and four sevenths; seventh stria only visible in basal
third. Length (cf) 3.2 mm. ; width 1.2 mm. Idaho (Cceur d'Alene),
— Wickham aleneanum n. sp.

Prothorax widest only slightly before the middle, the sides broadly, sub-
evenly rounded from apex to the short subparallel basal part. . . .49

49 — Prothorax relatively larger, its widest part about as wide as the ely-
tral base. Form not very broad, convex, black and polished, with
faint aeneous lustre above, the legs pale piceo-rufous throughout;
head moderate, with large though only moderately prominent eyes,
the sulci somewhat short and narrow; antennae black, rather heavy,
though almost as long as the elytra, the medial joints obconic and
distinctly more than twice as long as wide; prothorax large, one-
half wider than long, evidently narrower at base than apex, the
sides strongly rounded, subparallel for only a short distance before
the basal angles; anterior impression obsolete, the subbasal evident,
the stria very fine; foveae small, deep, linear, isolated from the dis-

BEMBIDIIN/E 115

tinct carina; elytra one-half longer than wide, wider posteriorly
than at base, the sides only just visibly arcuate, rapidly rounding
at the humeri, parabolic in apical third, barely a third wider than
the prothorax; stria? fine, unimpressed, gradually attenuate and obso-
lete scarcely behind the middle, the punctures very fine and remotely
separated throughout; foveae extremely small, before basal and behind
apical third. Length (9) 3.3 mm.; width 1.2 mm. Colorado
(Boulder Co.). Mrs. T. L. Casey. Two examples.

perturbatum n. sp.

Prothorax relatively smaller, at its widest part narrower than the ely-
tral base 50

50 — Form oblong, moderately convex, very highly polished, black, with-
out decided metallic lustre; legs piceous; head very moderate, not
three-fourths as wide as the prothorax and not quite as wide as an
elytron, the eyes only moderately prominent; sulci narrow, parallel;
antennae black, thick and short, two-thirds as long as the elytra, the
medial joints evidently less than twice as long as wide; prothorax
barely two-fifths wider than long, distinctly narrower at base than
at apex, the sides rather strongly and evenly rounded to the straight
parallel basal part, which is nearly a fifth the total length; anterior
impression feeble, the posterior wide but evident, more or less feebly
and remotely punctulate, the stria very fine; foveae punctate, broadly
and irregularly impressed, the carina strong and distinct; elytra
fully one-half longer than wide, parallel, with feebly arcuate sides,
gradually parabolic behind, nearly one-half wider than the prothorax;
striae very fine, unimpressed, obsolete barely behind the middle, the
punctures very fine and remotely separated throughout, somewhat
less remote but not larger in the sutural series; foveae very small,
near basal and apical two-sevenths. Length (cf 9 ) 3-35-3-5 mm.;
width 1.3-1.35 mm. Idaho (Cceur d'Alene), — Lt. Jas. A. Leyden.

agitabile n. sp.

Form, coloration and lustre nearly as in agitabile, similarly convex and
highly polished, having a very faint subaeneous lustre; legs piceo-
rufous, the femora darker; head larger, with larger though only
slightly more prominent eyes, more than three-fourths as wide as
the prothorax and rather wider than an elytron, the antennae black,
longer, the medial joints fully twice as long as wide; prothorax fully
two-fifths wider than long, but little narrower at base than at apex,
the sides regularly and strongly arcuate, becoming more briefly sub-
parallel at base; surface nearly similar, the foveae smaller, very deep,
better defined, oval, separated from the distinct carina; elytra simi-
lar but only about two-fifths wider than the prothorax, the similarly
very fine and unimpressed striae continuing rather more evidently
behind the middle and with the punctures, though fine, more dis-
tinct than in agitabile and somewhat less widely separated; foveae
extremely small, before basal and near apical third. Length (c/1)
3.6 mm.; width 1.35 mm. Oregon (Bull Run, Clackamas Co.),—
Mrs. Kermack atrolucens n. sp.

51 — Form rather narrow, strongly convex, polished throughout, black,
with aeneous lustre anteriorly, the under surface piceo-rufous and

n6 MEMOIRS ON THE COLEOPTERA

the legs testaceous; elytra in great part rufous, black irregularly
along the suture arid blackish along the external margin, also around
the anterior fovea; at apical third there is on each a large external
spot more flavate and extending to the second stria, bordered an-
teriorly with a black fascia involving the suture, the apex largely
subflavate and united laterally with the external spot; darker areas
submetallic; head large, very nearly as wide as the prothorax and
wider than an elytron, with very prominent eyes, the sulci long,
wide, deep and parallel, extending through the epistoma and ending
behind the middle of the eyes; antennae long, slender, in great part
pale, the third joint fully three times as long as wide; prothorax
only a fourth or fifth wider than long, widest near apical third; base
much narrower than the apex; sides strongly, subevenly rounded
anteriorly, oblique and nearly straight behind, almost imperceptibly
sinuate near the obtuse but sharp angles; margins not broadly but
strongly reflexed; anterior impression obsolete, the posterior feeble,
the stria extremely fine; surface very smooth throughout, the foveae
small, deep, oval, very smooth and adjoining the very moderate
carina; elytra parallel, with barely arcuate sides, rapidly rounding
at the humeri, gradually parabolic behind, one-half longer than wide,
one-half wider than the prothorax; striae feebly impressed, coarse,
not quite entire, punctures very coarse, deep, separated by their
own diameters, those of the seventh as coarse as the others and ex-
tending scarcely beyond the middle, those of the other striae ab-
ruptly wanting in apical third; foveae near basal and apical third.
Length (9) 4-O mm.; width 1.45 mm. Arizona (southern).
[Bemb. scintillaus Hayw., nee Bates.] vinnulum Csy.

Form nearly similar but not quite so convex, highly polished throughout
and deep black, with but little or no metallic lustre, the elytra each
with an extremely faint small external spot posteriorly, the apex
also nubilously and faintly pallid; under surface black, the legs dark
rufous, the femora piceous; head four-fifths as wide as the prothorax,
wider than an elytron, with prominent eyes and well developed
deep sulci; antennae thicker, black, piceous basally, the third joint
more obconic, two and one-half times as long as wide; prothorax
a fourth wider than long, barely visibly narrower at base than at
apex, widest at anterior two-fifths, the sides broadly and less strongly
arcuate, becoming deeply sinuate just before the angles, which are
prominent, right and very sharp, the base oblique laterally; margins
finely reflexed; surface nearly as in the preceding, the very smooth
foveae less deep, longer and more linear, adjoining the distinct car-
ina; elytra one-half longer than wide and one-half wider than the
prothorax, parallel, gradually parabolic behind; striae rather fine,
not quite entire, not distinctly impressed, the punctures rather small
and close-set, not comparable in any way with those of vinnulum
and traceable to the extreme ends of the striae; oblique terminal
groove of the seventh stria unusually long; foveae near two and four
sevenths. Length (9 ) 4.0 mm.; width 1.5 mm. Arizona (Tucson).
A single example, taken by the writer definitum n. sp.

52 — Prothorax not or very indistinctly narrower at base than at apex,

BEMBIDIIN/E 117

but with a general habitus allying the species with constrictum,

rather than patniele -53

Prothorax always very much narrower at base than at apex. ... .54

53 — Body moderately stout, rather convex, shining, the head very feebly
alutaceous; color black, sometimes with feeble aeneous lustre, the
elytra piceous, broadly, nubilously rufescent basally, except a dark
spot around the anterior fovea, also with a broad and feeble, ex-
tremely nubilous fascia near apical third, the apex pallescent; under
surface black, the epipleura partially pale, the legs bright rufous;
head well developed, fully three-fourths as wide as the prothorax,
with large prominent eyes, the sulci long, broad and rather deep;
antennae long, slender, fuscous, pallescent basally, the medial joints
between three and four times as long as wide; prothorax two-fifths
wider than long, widest slightly before the middle, the sides strongly
rounded, straighter apically, strongly oblique posteriorly, becoming
deeply sinuate before the angles, being parallel in about basal sev-
enth or eighth, the margins widely and peculiarly strongly, con-
spicuously reflexed; base equal to the apex, both almost truncate;
impressions shallow and very feeble; foveae long, deep and linear,
the carina long and strong; elytra one-half longer than wide, two-
fifths wider than the prothorax, parallel, the striae entire, scarcely
impressed, rather coarse, fine apically, the punctures strong, dis-
appearing at about apical third; seventh series distinct; foveae near
basal fourth and apical third. Length (cf 9 ) 4.8-5.0 mm.; width
1.8 mm. Massachusetts (Framingham — Frost) and Michigan.

[Bemb. dentellum Hayw. nee Thun.] arcuatum Lee.

A — Similar to the preceding but evidently narrower, the prothorax
less transverse, the base only apparently narrower than the apex
but actually equal, the elytra similar in every way, excepting that
they are more elongate, three-fifths longer than wide, two-fifths
wider than the prothorax. Length (cf) 4-5 mm.; width 1.6 mm.
Maine (Wales — Frost). A single specimen sent to me as identi-
fied by Mr. Hayward under the name graciliformc.

graciliforme Hayw.

Body more oblong, moderately convex, black, the anterior parts strongly,
the elytra feebly, alutaceous, the elytra each with a large basal pale
spot, two fine and feeble on the third interval before and behind the
anterior fovea and one on the fifth opposite the fovea, a longer dash
at the middle of the eighth interval, a posterior fascia from the margin
to the fifth interval and a large apical area, also pale, the pale spots
composed of separated lines as in patniele; legs rufous, the femora
partially piceous; head large, with very prominent eyes, four-fifths
as wide as the prothorax, the sulci broad and shallow; antennae fus-
cous, paler basally, except a dorsal black streak, the medial joints
between two and three times as long as wide; prothorax nearly
one-half wider than long, the base and apex equal; sides rather widely
and strongly reflexed, broadly rounded, becoming broadly and al-
most imperceptibly sinuate basally, the angles obtuse but not
rounded; anterior impression subobsolete, the posterior broad but
evident; stria not entire, very fine; foveae deep, elongate-oval,

n8 MEMOIRS ON THE COLEOPTERA

slightly scabrous, remote from the carina, which is moderate though
distinct; elytra oblong, with arcuate sides, barely one-half longer
than wide, hardly one-half wider than the prothorax; striae entire,
very fine, scarcely at all impressed, the punctures very fine, barely
traceable to about apical third, the seventh series similar to the
others; foveae strongly asperate, rather before basal and at apical
third. Length (9) 4.0 mm.; width 1.65 mm. Arizona (Tugson).
A single example, taken by the writer lassulum n. sp.

54 — Larger species, the sharply marked pale elytral maculation forming
an oblong and externally open ring about the humeri, more or less
expanding toward the margin near basal third — the ring apparently
incomplete basally in cordatnm — and also with a posterior narrow
fascia and the apex pale 55

Smaller species, the elytral maculation of the patruele order 56

Smaller and more elongate species, with the elytral maculation almost
entirely confined to posterior third, rarely in great part wanting. .57

55 — Form very' stout, only slightly convex, black, with greenish lustre
above, excepting the pale elytral maculation, shining, the elytra
more or less alutaceous; under surface black, the legs obscure rufous;
head large, with prominent eyes, almost four-fifths as wide as the
prothorax, the sulci broad, rather shallow; antennae only two-thirds
as long as the elytra, thick, blackish throughout, the medial joints
barely twice as long as wide; prothorax short, nearly three-fifths
wider than long, the sides very strongly rounded, well reflexed, very
oblique behind, rapidly sinuate basally, parallel for a short distance
in front of the sharp angles; surface shining but rugulose basally and
densely scabrous postero-laterad, the impressions distinct; foveae
large and shallow, with a small and slightly deeper median linear
part, the carina not very long but distinct; elytra broad, not one-
half longer than wide, nearly one-half wider than the prothorax,
parallel, with broadly arcuate sides, rapidly very obtuse behind; striae
entire, fine, not impressed, rather finely but strongly, somewhat
closely punctate, the small foveae slightly before the middle and near
apical fourth. Length (c/1 9 ) 5.8-6.5 mm.; width 2.4-2.6 mm.
California (San Diego, Los Angeles and Alameda).. .insulatum Lee.

Form not so broad and rather more convex, shining, the elytra slightly
alutaceous, black, with feeble subaeneous lustre, the pale maculation
as described above normally, but sometimes almost wholly wanting,
excepting the basal and apical areas; under surface black, the legs
piceous; head large, with prominent eyes and wide, somewhat shal-
lowly impressed sulci; antennae as in insulatum but not quite so
thick, black as a rule, or each joint may be rufescent basally, the
medial joints slightly more than twice as long as wide; prothorax
less transverse and not quite so strongly rounded at the sides, but
otherwise nearly as in the preceding, except that the foveae are rather
shallow and very irregularly impressed, without deep linear part, the
carina rather long and strong; elytra much less broad, slightly more
than one-half longer than wide, more strongly rounded behind, par-
allel and broadly arcuate at the sides, scarcely a third wider than the
prothorax, the striae rather fine, not impressed, with small but dis-

BEMBIDIIN^E 119

tinct punctures, very gradually extinct posteriorly, the foveae slightly
before basal and behind apical third. Length (cf 9) 5.5-5.8 mm.;
width 2.1-2.25 mm. Arizona (Douglas), — F. H. Snow.

caliginosum n. sp.

Form still narrower than in caliginosum and smaller in size, moderately
convex, dull in lustre, viridi-aeneous, the elytra slightly alutaceous,
black, the pale markings broad and very complete, the internal ring
about the humeri complete from base to external margin, very broad
along the eighth interval, the black line at the anterior fovea well
developed; posterior fascia slender internally, scarcely attaining the
suture, broadly united externally with the large apical pale area;
under surface shining, black, with greenish lustre, the abdomen in
part rufescent, the legs, hypomera and epipleura very pale; head
large, with very prominent eyes, but little narrower than the pro-
thorax and much wider than an elytron, the sulci very shallow,
slightly oblique; antennae slender, fuscous, pale basally, the medial
joints about three times as long as wide; prothorax four-sevenths
wider than long, strongly rounded at the sides, oblique and less so
posteriorly to a short sinus before the right angles; impressions very
faint and broad, the short stria extremely fine; foveae small, rather
shallow, next to the short feeble carina; base fully two-thirds the
maximum width; elytra three-fifths longer than wide, three-sevenths
wider than the prothorax, parallel, with broadly arcuate sides; striae
entire, moderately strong, unimpressed, the punctures not coarse
but conspicuous and close-set, obsolete toward posterior third;
foveae before basal and behind apical third. Length (cf 9 ) 5.0-
5.2 mm.; width 1.8-2.0 mm. Western Texas (Big Springs), — Wick-
ham. Three specimens placabile n. sp.

Form much depressed aeneous, not very shining; head broad, the sulci
not deep, slightly oblique; antennae slightly longer than the head and
prothorax, fuscous, rufo-testaceous at base; prothorax slightly wider
than the head, almost twice as wide as long, truncate at apex and
base; sides strongly rounded, strongly retracted behind and briefly
sinuate, the hind angles right, not rounded; base scarcely more than
half the maximum width; surface almost flat,, the stria fine, biabbre-
viated; impressions indistinct; foveae small, the carina distinct; ely-
tra but slightly wider than the prothorax, flat; striae before the mid-
dle finely punctate; intervals flat, with two pale fasciae, the oblique
fascia before the middle extending to the second stria, bifurcate
internally — the ends of the bifurcation evidently the small spots
before and behind the anterior fovea, noticeable in maculation of the
patruele type — broad toward the margin, the angulate fascia near
apical third extending inwardly to the third stria, the internal part
sometimes rather indistinct; apex broadly and obscurely testaceous;
margin anteriorly aeneous, beneath black, the epipleura and legs tes-
taceous. Length 6.25 mm. New York. Description drawn from
the original cordatum Lee.

56 — Body stout, oblong-suboval, slightly convex, viridi-aeneous and rather
dull anteriorly; elytra shining, black; pale lines of the fasciae sep-
arated by the black striae, the entire eighth interval pale, except at

i2o MEMOIRS ON THE COLEOPTERA

base; intervals seven to four with the lines gradually decreasing, the
fourth also at base and the fifth with a longer basal line; posteriorly,
there is a short broad external fascia and a pale apical area; under
surface piceo-rufous, the legs pale flavo-testaceous; head smaller
than in the preceding subsection; three-fourths as wide as the pro-
thorax and as wide as an elytron, the eyes prominent; sulci moder-
ately narrow, deeper than in the preceding; antennae not very slen-
der, fusco-testaceous, the medial joints between two and three times
as long as wide; prothorax nearly one-half wider than long, almost
imperceptibly narrower at base than at apex ( 9 ) or distinctly so
(cf ), the sides subevenly and rather strongly rounded to the short
subparallel basal part, the angles right; margins broadly and con-
spicuously reflexed, especially in the male; impressions very feeble,
the stria extremely fine; foveae rather deep, sublinearly impressed,
the carina subequally long, distinct; elytra not quite one-half longer
than wide, parallel, obtuse at apex, a little less than one-half wider
than the prothorax, the striae rather fine, unimpressed, the punctures
distinct basally but traceable barely to the middle as a rule, the fovese
near basal and apical third ( 9 ) or more approximate (cf ). Length
(cf 9) 4.1-4.6 mm.; width 1.7-1.85 mm. California (Ytima Reser-
vation on the Colorado River). [Ochthedromus laticollis Lee.;

Bemb. platy denim G. & H.] nubiculosum Chd.

A — Similar to the preceding but rather more elongate, the frontal
sulci a little broader and shallower, the prothorax relatively some-
what larger, though otherwise similar, the elytra fully one-half
longer than wide, with the strial punctures still more distinct an-
teriorly and easily traceable to the summit of the declivity.
Length (cf 9 ) 4.0-4.75 mm.; width 1.6-1.8 mm. A considerable
series, said by Mr. Dunn to have been taken at El Paso, Texas.

daphnis n. subsp.

Body oblong-suboval, moderately convex, viridi-aeneous and dull ante-
riorly, the elytra more shining, the pale lines strongly separated by
the black striae, having an anterior fascia, very broad at the margin,
extending upon the fourth interval, the third with a line behind the
anterior fovea and a long one before, extending to the base, the
fourth and fifth also pale at base; near posterior third there is an
irregular oblique fascia, extending to the third stria, broadly united
externally with the large apical pale area; under surface piceous, the
legs pale; head large, but little narrower than the prothorax, wider
than the apex of the latter, with very prominent eyes, the sulci sub-
parallel, broad and shallow; antennae rather long, slender, fuscous,
paler basally, the medial joints three times as long as wide; prothorax
much smaller than in the preceding, one-half wider than long, the
sides rather strongly, subevenly rounded to a short deep sinus at
base, only moderately reflexed, the angles right; impressions subob-
solete, the stria extremely fine; foveae moderate, deeply impressed
and sublinear, the carina strong, longer than the foveae; elytra par-
allel, rather more than one-half longer than wide, almost one-half
wider than the prothorax, very obtusely rounded at apex, the sides
rapidly rounding at the humeri; striae entire, rather coarse through-

BEMBIDIINJE 121

out, not definitely impressed, the punctures distinct, traceable to
the declivity; apical groove of the seventh stria long and strong;
foveae approximate; near three and four sevenths. Length (cf 9 )
4.0-4.7 mm.; width 1.5-1.75 mm. Texas (Brownsville), — \Yick-

ham amnicum n. sp.

Body oblong-suboval, still more convex, shining, black, alutaceous and
feebly viridate anteriorly; elytra each with a small pale spot at base,
a slender external fascia near basal third, extending to the fourth
stria, the line on the eighth interval long, also with a small external
fascia at posterior third, broadly united with the large apical pale
area; under surface black, the abdomen rufous about the external
limb, the legs, hypomera and epipleura pale; head moderate, scarcely
more than three-fourths as wide as the prothorax and as wide as
the thoracic apex, the sulci parallel, moderately broad and rather
deep, the eyes rather prominent; antennae moderately long, fuscous,
paler basally, the medial joints between two and three times as long
as wide; prothorax two-fifths wider than long, the finely reflexed
sides subevenly and strongly rounded to a short and very feeble
sinus at the angles, which are sharp and minutely prominent, scarcely
more than right, the base notably arcuate, nearly three-fourths the
maximum width; impressions very feeble, the stria extremely fine;
foveae small, moderately impressed, linear, the carina short and fine;
•elytra one-half longer than wide, almost one-half wider than the
prothorax, gradually parabolic behind, the parallel sides broadly
arcuate; striae entire, strong, feebly impressed, but becoming very
fine on the declivity; punctures basally rather coarse and perforate;
foveae at two and four sevenths; apical groove of the seventh stria
short, bearing a single puncture. Length (9) 4-5 mm.; width 1.8

mm. Texas (without more definite locality) festinans n. sp.

57 — Elytral striae obsolete at tip 58

Elytral striae entire, sharply marked at apex, though fine 65

58 — The striae obsolete in apical third or fourth of the length 59

The striae obsolete only at the apex 60

59 — Form moderately stout, strongly convex, polished, black, the head
not definitely alutaceous; elytra vaguely picescent at tip, the mar-
ginal spot near the apex scarcely traceable in strong light; under
surface black, the abdomen dull rufous; legs uniform rufous; head
well developed, nearly four-fifths as wide as the prothorax, with only
moderately prominent eyes, the sulci rather narrow and deep; an-
tennae somewhat slender, fuscous, clearer at base, the medial joints
scarcely three times as long as wide; prothorax about a third wider
than long, the sides evenly and strongly rounded, becoming very
feebly sinuate only at the angles, which are not prominent, widest
barely before the middle, the margins moderately reflexed; base
three-fifths the maximum width; anterior impression subobsolete,
the posterior feebly evident, except medially, the stria extremely
fine; foveae small, rather deep, narrow and linear, the carina obso-
lete; elytra oblong, parallel, one-half longer than wide, three-sevenths
wider than the prothorax, circularly rounded at apex; striae rather
coarse, feebly impressed, obsolete at apical fourth, the seventh at

122 MEMOIRS ON THE COLEOPTERA

four-sevenths; punctures coarse and deep; foveae strong, near basal
and apical third. Length (9) 4.7 mm.; width 1.8 mm. Florida
(Lake Worth) prosperum n. sp.

Form somewhat similar but narrower, convex, shining throughout, deep
black, the elytra with apex and external subapical spot feebly pallid,
these areas not at all well defined; under surface piceous-black, the
abdomen pale rufous; legs similarly rufous; head rather small, three-
fourths as wide as the prothorax, much narrower than an elytron,
the sulci narrow and rather deep; eyes not very prominent; antennae
slender, fuscous, pale basally, the medial joints nearly three times
as long as wide; prothorax small, similar in general form and surface
to that of prosperum, but only a fourth wider than long, widest near
anterior two-fifths, with the arcuate sides less arcuate and oblique
for a longer distance posteriorly, the base four-sevenths the maxi-
mum width; elytra similar but narrower, the similarly punctured
striae obsolete in nearly apical third; foveae near two and four sev-
enths. Length (cf) 4.4 mm.; width 1.6 mm. Florida (Indian
River), — J. F. Kemp luculentum n. sp.

Form more slender, strongly convex, very shining, deep greenish-black,
the head barely perceptibly alutaceous; elytra without trace of paler
marking, except at the sides near the apex, where there is a minute
and excessively feeble trace of a spot, only visible in strong light,
the extreme tip also very faintly paler; under surface black, the abdo-
men very obscure rufous, the legs testaceous; head four-fifths as
wide as the prothorax but not as wide as an elytron, the sulci not
very broad and rather deep; antennae moderately long, three-fourths
as long as the elytra, fusco-testaceous, the medial joints not quite
three times as long as wide; prothorax small, convex and polished,
about a third wider than long, very much narrowed at base, widest
but just before the middle, the sides strongly rounded to the angles,
not sinuate before the latter, which are minutely prominent; base
with a few punctures and but little more than half the maximum
width; impressions subobsolete, the stria very fine; foveas small,
deep, elongate-oval, the carina obsolete or virtually so; elytra three-
fifths longer than wide, oblong-oval, very gradually narrowly para-
bolic behind, two-fifths wider than the prothorax; striae not very
fine, unimpressed, obsolete near apical fourth, the punctures rather
strong and notably well separated ; foveae before basal and near api-
cal third. Length (d71 9 ) 4.2-4.6 mm.; width 1.45-1.6 mm. New
Jersey (Cape May). Five specimens vividum Csy.

60 — Prothorax narrow, but little wider than an elytron, the base barely
perceptibly narrower than the apex. Body black, alutaceous ante-
riorly, the elytra very shining, with a small pale spot on each on
the basal declivity, a long feeble streak on the eighth interval and
a moderate external subapical spot, broadly united along the mar-
gin with the apical pale area; inflexed sides rufescent, the under sur-
face black, the abdomen partially dull rufous; legs very pale flavo-
testaceous; head small, though more than three-fourths as wide as
the prothorax, much narrower than an elytron, the sulci parallel,
rather deep; antennae fuscous, pale basally, the medial joints less

BEMBIDIIN/E 123

than three times as long as wide; prothorax scarcely a third wider
than long, widest barely before the middle, the sides broadly and
very moderately rounded to the abrupt deep sinus just before the
right and rather prominent angles, the base decidedly arcuate; im-
pressions subobsolete, the short stria extremely fine; foveae small,
rather deep, linear, separated from the short fine carina; elytra ob-
long, parallel, one-half longer than wide, fully three-fourths wider
than the prothorax; striae moderate, not obviously impressed, the
punctures distinct to the declivity; foveae at two-sevenths and two-
thirds. Length (cf) 3.8 mm.; width 1.6 mm. Rhode Island (Bos-
ton Neck) argutum n. sp.

Prothorax always much wider than an elytron, the base distinctly nar-
rower than the apex 61

61 — Form peculiarly elongate and subparallel, brownish-black, the pro-
thorax unusually large, sometimes but little narrower than the elytra.
Upper surface with more or less aeneous lustre, shining, the head
alutaceous; elytra with the tip and sometimes an external connected
subapical spot, both very nubilous and feebly defined, pale; under
surface piceo-rufous, the abdomen clearer rufous, the legs very pale;
head well developed, four-fifths as wide as the prothorax, wider than
an elytron, with very moderate eyes and short broad shallow sulci;
antennae fuscous, clearer basally, the medial joints not quite three
times as long as wide; prothorax two-fifths wider than long; base
only four-sevenths the maximum width, the sides moderately re-
flexed, subevenly and strongly rounded to a very short parallel
part just at the right angles; impressions subobsolete, the short stria
very fine; foveae very small, rather deep, lineato-oval, separated
from the very short feeble carina; elytra parallel, with broadly arcu-
ate sides and circular tip, very long, at least three-fourths longer
than wide, not over a third wider than the prothorax, the striae
rather strong, feebly impressed, subequally distinct nearly to their
point of disappearance at the summit of the short declivity, with
the moderate punctures even and distinct almost throughout their
length; foveae more or less near basal and apical third. Length
(cf 9 ) 4.6-5.1 mm.; width 1.55-1.7 mm. New York (Long Island)
and New Jersey. Twelve examples contractum Say

Form always much less elongate and rather more convex, or more ven-
tricose, the prothorax in all cases much narrower than the elytra;
color invariably black, with more or less feeble metallic lustre as a
rule 62

62 — Head well developed, as wide as an elytron and with notably prom-
inent eyes 63

Head small, with only moderately prominent eyes, always distinctly
narrower than an elytron 64

63 — Body rather stout and convex, shining, greenish-black, the anterior
parts alutaceous; elytra with a distinctly defined marginal subapical
pale spot, broadly connected with the distinct pale apex, sometimes
also with a short external irregular fascia near basal third, which is
however extremely indistinct; head over three-fourths as wide as
the prothorax, the sulci rather wide, not very deep; antennae fusco-

124 MEMOIRS ON THE COLEOPTERA

testaceous, moderate, the medial joints two and one-half times as
long as wide; prothorax widest but slightly before the middle, the
sides strongly, subprominently rounded, less arcuate anteriorly and
posteriorly, becoming sinuate only slightly before the hind angles,
which are right; base two-thirds the maximum width; impressions
subobsolete, the stria very fine; foveae small, deep, linear, separated
from the very short fine carina; elytra oblong, gradually rounded
behind, slightly more than one-half longer than wide, two-fifths
wider than the prothorax, the striae not fine, scarcely at all impressed,
the distinct and close-set punctures continuing to about apical third;
foveae near basal and apical third. Length (d71 9 ) 4.5-4.7 mm.;
width 1.7-1.75 mm. New Jersey to Texas (Galveston).

constrictum Lee.

A — Similar to constrictum but stouter, the prothorax broader and still
more strongly rounded at the sides but in similar manner, except
that basally they become only just visibly sinuate at the hind
angles, which are obtuse, with the apex minutely and feebly prom-
inent; elytra uniformly deep black, excepting the pale areas, which
are as in constrictum. Length (9 ) 5-O mm.; width 1.9 mm. New

Jersey vernula Csy.

B — Similar to constrictum but narrower, the eyes not quite so large
but more prominent, the prothorax shorter, one-half wider than
long, widest rather more anteriorly and with more evenly rounded
sides, similar at the angles; foveae longer, feebler and more irreg-
ularly impressed; elytra similar but narrower, the foveae nearer
two and four sevenths, the lustre rather more aeneous. Length
(9) 4.4 mm.; width 1.65 mm. Texas (Brownsville), — Wick-
ham civile n. subsp.

Body larger and more elongate, similar in coloration and lustre, the ab-
domen rufous only at tip and the legs darker rufous; head not over
three-fourths as wide as the prothorax, the sulci rather broad and
shallow; antennae fusco-testaceous, not much over two-thirds as
long as the elytra, the medial joints as in constrictum; prothorax
not quite one-half wider than long, the sides more evenly rounded
to the short parallel basal part, the angles right and sharp, 'the base
oblique at the sides, barely twro-thirds the maximum width; surface
and foveae nearly as in constrictum, the carina fine but distinct; ely-
tra parallel, very gradually parabolic behind, almost three-fifths
longer than wide, colored as in constrictum, the lateral fascia near
basal third extremely faint and nubilous, the posterior marking dis-
tinct; striae rather fine, scarcely impressed, obsolescent well before
the tip, the punctures rather small and well separated, except in
the two inner series, the foveae near basal and apical third. Length
(9 ) 5-5 mm.; width 2.0 mm. Arizona (probably southern).

particeps n. sp.

64 — Form elongate-oval, rather convex and shining, the anterior parts
slightly alutaceous, black, often with feeble aeneous lustre; elytra
with the pale apex and external small connected spot feebly defined
and rather faint; eighth interval with a long and very faint submedian
streak; under surface black, the abdomen obscure rufous, the legs

BEMBIDIIN^E 125

very pale; head more than three-fourths as wide as the prothorax
but not as wide as an elytron, the sulci narrow and sharply impressed,
rather deep; antennae fusco-testaceous, the middle joints as in con-
st rict it HI; prothorax much smaller, the sides more evenly rounded to
the very small distinct basal sinus, the angles right, prominent and
sharp, the base arcuate, nearly three-fourths the maximum width;
surface nearly as in constrictnm, the foveae and carina even smaller
but distinct; elytra one-half longer than wide, two-fifths wider than
the prothorax, obtusely ogival at tip, the striae rather fine, unim-
pressed, the punctures distinct, rather close-set, obsolete at the de-
clivity; foveae near two and four sevenths. Length (cf 9) 3.7-4.1
mm.; width 1.4-1.65 mm. Xew Jersey and Delaware. Eleven
examples acticola Csy.

Form suboval, moderately convex, shining, the anterior parts feebly
alutaceous, feebly subaeneous above; elytra not very intense black,
each with a minute pale point on the basal declivity, very faint
streaks on intervals eight to five near anterior third, the outermost
long, and an oblique paler fascia near apical third, composed of
lines on the five outer intervals, not coalescing with the distinct
apical pale spot; under surface black, the abdomen slightly pices-
cent, the legs dark rufous; head less than three-fourths as wide as
the prothorax, the sulci sharply defined, narrow and deep, parallel;
antennae slender, piceous, paler at base, the medial joints very nearly
three times as long as wide; prothorax one-half wider than long,
only slightly narrowed at base, which is but little narrower than the
apex and fully three-fourths the maximum width; sides rather
strongly, subevenly rounded, becoming gradually broadly but dis-
tinctly sinuate basally, the angles right; anterior impression obso-
lescent, the posterior feeble and narrow but evident, the stria very
fine; foveae rather large, impressed, long, deep and linear axially, the
carina shorter and fine but distinct; elytra one-half longer than wide,
two-fifths wider than the prothorax, subcircular at tip; striae rather
fine, barely at all impressed, obsolescent near the apex, the punc-
tures very fine, moderately close, larger and more distinct basally;
foveae near two and four sevenths. Length (cf) 3-5 mm.; width
1.33 mm. New Jersey (near the Delaware River). . . . editum n. sp.

65 — Body in its inflated elytra and more convex form resembling the
preceding subsection; the elytral striae, though entire, are, on the
declivity — more sloping than in the following species — fine but sim-
ply impressed and not groove-like. Rather small, greenish-black,
shining, alutaceous anteriorly; elytra each with a small pale spot
on the basal slope, also a broad external posterior spot curving
about the apex, subequally wide throughout and well defined; under
surface black, the abdomen partially rufous; epipleura dull rufous,
their inner margin black; legs clear and pale rufous throughout;
head large, with very prominent eyes, about as wide as the prothorax,
the sulci rather feeble; antennae very slender, fusco-testaceous, the
medial joints not quite three times as long as wide; prothorax one-
half wider than long, the base not much narrowed, three-fourths
the maximum width; sides evenly, rather strongly rounded, becom-

126 MEMOIRS ON THE COLEOPTERA

ing deeply sinuate and nearly parallel for an appreciable distance
in front of the very sharp right angles; margins broadly reflexed,
finely so anteriad; impressions very feeble, the stria short and fine;
foveae small, deep, linear, distant from the rather long strong car-
ina; elytra short, not one-half longer than wide, almost one-half
wider than the prothorax, gradually ogival in nearly apical two-fifths;
sides somewhat rapidly rounding at the humeri; striae and punctures
moderately fine; fovese near basal and apical third. Length (9)
4.0 mm.; width 1.45 mm. Texas (Brownsville), — Wickham.

vulpecula n. sp.

Body narrower and more elongate, less convex, the apical part of the
elytra more feebly and gradually declivous as a rule, with the striae
there very fine but groove-like and unimpressed 66

66 — Elytra uniform in color and rather pale brown. Body narrow,
moderately convex, polished throughout, the head not alutaceous;
anterior parts blackish, with feeble subaeneous lustre; under surface
piceous, the legs pale; head rather small, two-thirds as wide as the
prothorax, with short and rather deep sulci and somewhat promin-
ent eyes; antennae fuscous, clearer basally, the medial joints barely
more than twice as long as wide: prothorax barely a third wider than
long, subtruncate at apex; base two-thirds the maximum width,
widest barely at all before the middle; sides subevenly rounded from
apex to the short gradual feeble sinus before the sharp right angles;
margins rather narrowly, subevenly reflexed; impressions subob-
solete, the stria fine; foveae very small, deep, linear, within a feeble
rugulose impression, the carina small and fine; elytra three-fifths
longer than wide, scarcely two-fifths wider than the prothorax,
gradually rounded behind; striae somewhat fine, groove-like, unim-
pressed; punctures rather small, traceable to about apical fourth;
foveae before basal and near apical third. Length (cf) 3.8-4.0
mm.; width 1.35-1.4 mm. Arizona (southern) dejectum Csy.

Elytra with extremely faint and nubilous posterior pallidity. Body
narrow, very moderately convex, shining, slightly alutaceous ante-
riorly, black, with strong cupreo-aeneous lustre throughout above;
under surface and epipleura black; legs piceo-rufous, the femora
nearly black; head but little narrower than the prothorax, with very
prominent eyes, the sulci short, rather narrow and deep; antennae
slender, blackish, pale basally, the medial joints two and one-half
times as long as wide; prothorax two-fifths wider than long, dis-
tinctly narrower at base than apex, widest near anterior two-fifths,
the sides evenly and only moderately rounded from apex to the
barely visible sinus at the angles; anterior impression feeble, the
posterior evident, the stria fine; foveae long and sublinear but broadly
impressed and very shallow; carina moderate, fine; elytra two-thirds
longer than wide, very gradually narrowing and rounding in pos-
terior two-fifths, fully one-half wider than the prothorax; sides very
gradually rounding toward the humeri; striae fine, groove-like, un-
impressed, the small punctures rapidly more distinct basally; foveae
near basal and apical third. Length (9) 3-8 mm.; width 1.42 mm.
Arizona (probably southern) docile n. sp.

BEMBIDIIN/E 127

Elytra with a clearly defined external subapical spot, more or less broadly
connected along the margin with the large apical pale area 67

67 — Form oblong-suboval, moderately convex, black, shining, the ante-
rior parts greenish and more or less alutaceous; under surface black,
the abdomen partly rufous, the legs piceous; epipleura blackish;
head large, with very prominent eyes, five-sixths as wide as the pro-
thorax, the sulci short, slightly converging; antennae fuscous, paler
basally, the medial joints about two and one-half times as long as
wide; prothorax nearly one-half wider than long, the base evidently
narrower than the moderately sinuate apex, widest at apical two-
fifths, the sides strongly rounded, oblique and straighter posteriorly,
gradually becoming feebly sinuate near the angles, which are scarcely
more than right and very sharp; impressions very feeble, the stria
extremely fine though subentire; foveae small, oblong, deeply im-
pressed, the carina moderate, fine; elytra three-fifths longer than
wide, two-fifths wider than the prothorax, rather gradually round-
ing behind; striae somewhat fine, groove-like, unimpressed, the punc-
tures small but distinct except behind the middle, close-set; foveae
near two and four sevenths. Length (d71 9 ) 3-35~4-5 mm.; width
1.25-1.6 mm. Minnesota (Duluth), Michigan (Marquette), Ne-
braska (Malcolm), Missouri (St. Louis) and Texas (Dallas, Waco
and Austin). Very abundant sociale n. sp.

Form, coloration and lustre almost similar, a little narrower; abdomen
more rufescent, the legs clearer rufous; head not quite so large, three-
fourths as wide as the prothorax or more, with very prominent eyes
and rather longer neck, the sulci longer and parallel; antennae nearly
similar; prothorax smaller, one-half wider than long, nearly similar
in outline and surface, except that the base is barely visibly narrower
than the apex and the carina at each hind angle longer, being fully
a fourth the total length and more strongly elevated; elytra narrower,
one-half longer than wide, gradually rounded behind, two-fifths
wider than the prothorax, the striae similarly fine but evidently im-
pressed, at apex not very fine as in sociale but notably impressed;
punctures distinct, especially toward base, the fovese near basal and
apical third. Length (cf) 3.4 mm.; width 1.25 mm. Texas (El
Paso). A single specimen, taken by the writer. . . .negligens n. sp.

Form more parallel, narrow, very moderately convex, similar in color-
ation, the legs testaceous; head large, four-fifths as wide as the pro-
thorax, with very prominent eyes, the sulci as in sociale; antennae
also nearly as in that species; prothorax larger, almost as wide as
the elytra, though nearly similar in outline and surface, more trans-
verse, three-fifths wider than long, the carina long as in negligens;
elytra elongate-oval, with parallel and arcuate sides, very gradu-
ally narrowing and rounded at apex, three-fifths longer than wide,
scarcely a third wider than the prothorax, the striae rather fine,
groove-like and unimpressed throughout, the punctures moderately
separated, gradually strong basally but almost completely obsolete
behind the middle; foveae near basal and apical third. Length (cf)
3.6 mm.; width 1.3 mm. Arizona (probably southern).

fugitans n. sp.

128 MEMOIRS ox THE COLEOPTERA

68 — Head about as wide as the prothorax, with conspicuously promin-
ent eyes 69

Head always distinctly narrower than the prothorax, the eyes generally
much less prominent 75

69 — Prothorax relatively smaller, at base much narrower than an ely-
tron, the sides broadly and only very feebly sinuate basally; anten-
nae long and slender, filiform, the second and third joints equal . .70

Prothorax broader, at base subequal in width to an elytron, the sides
becoming parallel for some distance before the hind angles; antennae
less elongate 71

70 — Body ventricose, convex, polished throughout, black, with slight
greenish lustre, the elytra each with a basal spot, and an external
fascia at basal and apical third, the apex also pale, the spots generally
nubilously defined; under surface black, the legs pale flavo-testa-
ceous; head but just visibly narrower than the prothorax, the sulci
parallel on the front, converging on the epistoma; antennae slender,
fusco-testaceous, the three basal joints and base of the fourth tes-
taceous, not quite as long as the elytra, the medial joints slightly
more than twice as long as wide; prothorax a third or fourth wider
than long, truncate at apex and base, the base four-sevenths the
maximum width; sides evenly and strongly rounded, becoming arcu-
ately oblique in about basal half; angles right; impressions and stria
very feeble; foveae small, deep, elongate, next to the very short
vestigial carina; elytra one-half longer than wide, nearly three-
fourths wider than the prothorax, gradually obtusely ogival in more
than apical third, the sides rapidly rounding at the humeri; striae
relatively rather coarse but scarcely at all impressed, obsolete near
the apex, the punctures deep, rather large and close-set, the foveae
near basal and apical third. Length (cf 9 ) 2.8-3.1 mm.; width
1.0-1.2 mm. Rhode Island to Illinois and southward to Galveston
and Austin, Texas. Abundant. [Bemb.fallax Dej.] affine Say

Body even more strongly ventricose, nearly similar in coloration, lustre
and in general habitus throughout, but with the antennae longer,
being fully as long as the elytra, with the medial joints fully two
and one-half times as long as wide, the first and second joints
exactly equal; prothorax less transverse, only just visibly wider than
long, strongly rounded laterally more anteriad, the sides arcuately
oblique from far before the middle; base more finely, evenly rugulose
and without the coarse subserial punctures observable in affine;
elytra relatively shorter, not quite one-half longer than wide, almost
similarly sculptured and maculate. Length (cf) 3.1 mm.; width
1.25 mm. Michigan (Marquette) thespis n. sp.

71 — Elytral striae entire. Form oblong-oval and rather convex, shining
throughout and black, with greenish lustre; elytra flavo-testaceous,
with a feeble cloud near the scutellum, a transverse submedial fas-
cia, broadly united suturally with a more posterior, transversely
oval area, black, the anterior fovea also within a small dark spot;
under surface black, the inflexed sides piceous, the legs bright rufous,
very slender; head just visibly narrower than the prothorax, more
evidently (9), the sulci deep and subparallel, abruptly very fine

BEMBIDIIN/E 129

and more converging on the epistoma; antennae moderately thick,
fusco-testaceous, two-thirds as long as the elytra, the medial joints
obconic, one-half longer than wide, the second distinctly snorter
than the third; prothorax generally not quite one-half wider than
long; base three-fourths the maximum width; sides strongly rounded
from apex to the parallel basal part; anterior impression obsoles-
cent, the subbasal rather distinct, rugulose; foveae moderate in size,
somewhat deep, sublinear, not adjoining the rather evident but much
shorter carina; elytra one-half longer than wide, nearly one-half
wider than the prothorax; striae rather fine, just visibly impressed,
fine but distinct at apex, the punctures small, somewhat close-set,
traceable to the declivity ; foveae near basal and apical third. Length
(cf 9 ) 2.7-3.2 mm.; width 1.0-1.18 mm. Arizona (Tucson — taken
by the writer — and Bill Williams Fork — taken by Prof. Snow).
Rather abundant. [Ochthedromus pictus \\ Lee.]. . .impotens n. nov.

Elytral striae slightly abbreviated at tip; frontal sulci feebly converging
anteriorly 72

72 — Antennae slender, filiform, full}- three-fourths as long as the elytra,
the medial joints fully twice as long as wide. Body rather narrow,
elongate and convex, polished throughout, black and with scarcely
metallic lustre; elytra flavate-brown, black posteriorly, the black
area diminishing in width anteriorly, becoming narrow on the suture
in basal third; there is also a black lateral area behind the middle,
and the anterior fovea and the punctures of the striae are also black-
ish; under surface black, the inflexed sides and legs pale; head not
distinctly narrower than the prothorax, the antennae fusco-testa-
ceous; sulci very evenly convergent on the front and epistoma;
prothorax two-fifths wider than long; base three-fourths the maxi-
mum width; sides moderately rounded from apex to the parallel
basal part; base with some coarse sculpture, obsolete at the middle,
the foveae large, broadly impressed, irregularly sublinear, the carina
short; elytra one-half longer than wide, about one-half wider than
the prothorax, parallel, with arcuate sides, rapidly rounding at the
humeri; striae rather coarse but barely impressed, the punctures
strong, moderately but irregularly separated, the foveae near apical
and basal third. Length (a71) 2.7 mm.; width 0.9 mm. Northern
Illinois (Highland Park) aestivum n. sp.

Antennae shorter, with the medial joints much less than twice as long as

wide 73

73 — Antennae clear testaceous throughout; elytra with very nubilous

markings. Body rather short, moderately convex, blackish-piceous,
polished, the elytra flavate, the sutural region posteriorly with large
undefined darker areas, the anterior fovea minutely darker; behind
the middle near each side, there is also a darker patch; head barely
narrower than the prothorax, the sulci slightly converging; antennae
rather short and thick; prothorax two-fifths wider than long, much
narrowed at base, the latter two-thirds the maximum width; sides
strongly rounded, rapidly arcuato-oblique behind the middle to the
parallel basal part; basal impression feebly rugulose, smooth and
T. L. Casey, Mem. Col. VIII, Oct. 1918.

130 MEMOIRS ON THE COLEOPTERA

obsolete medially; foveae moderate, sublinear, the carina fine, closely
paralleling the lateral edge, not distinct under slight amplification;
elytra scarcely one-half longer than wide, about one-half wider than
the prothorax, parallel, with arcuate sides and abruptly rounded
humeri; striae moderately coarse, distinctly impressed, the punctures
moderate, deep; foveae near basal and apical third. Length (c/1 9 )
2.5—2.6 mm.; width 0.85 mm. California (Yuma Reservation).
Two examples frugale n. sp.

Antennae fuscous, clearer testaceous basally; elytra with the darker areas
well defined 74

74 — Form oblong-suboval, rather strongly convex, polished throughout,
black, with feeble piceous tinge, the elytra flavate, with a post-scu-
tellar spot and a large common dark area in more than apical half
and limited by the apical pale area, which is subquadrate, with each
side deeply sinuate, the anterior line of this dark area continued
almost to each side margin by a less dark fascia ; anterior fovea within
a dark spot; legs and epipleura pale; head about as wide as the pro-
thorax, with very prominent eyes, the sulci straight, feebly con-
verging; antennae moderate, the medial joints slightly less than twice
as long as wide; prothorax well developed, two-fifths wider than long,
the subtruncate base slightly more than two-thirds the maximum
width, the sides strongly rounded to the parallel basal part; sub-
basal impression rather fine and near the basal margin, interrupted
at the middle, the foveae deep, sublinearly oval, close to the very
indistinct carina; elytra one-half longer than wide, less than one-
half wider than the prothorax, the parallel sides arcuate, rapidly
rounded at the humeri; striae moderate, somewhat impressed, the
punctures deep, conspicuous and usually close-set; foveae near basal
and apical third. Length (cf 9 ) 2.4-2.65 mm.; width o.75-o"-9 mm.
Texas (Brownsville, Dallas and Galveston), Nebraska (Malcolm),
Missouri (St. Louis), and Iowa (Keokuk). Abundant, .imbelle n. sp.

Form moderately stout and convex, oblong, highly polished, black, with
very feeble aeneous lustre anteriorly, the flavate elytra maculate
somewhat as in the preceding, except that the median fascia is pro-
longed anteriorly, along the median line of each elytron, almost to
the small spot inclosing the anterior fovea; there is also a pronounced
scutellar triangular dark area; head with prominent eyes, rather
obviously narrower than the prothorax, the frontal part of the sulci
subparallel; antennae with the medial joints one-half longer than
wide: prothorax well developed, short, one-half wider than long;
base nearly three-fourths the maximum width; sides rather strongly
rounded, oblique and evidently broadly sinuate basally, becoming
nearly parallel, the angles about right; subbasal impression distinct
and rugose except medially, the foveae rather broadly impressed, the
inner part sublinear, the carina short and indistinct; elytra rather
short, scarcely one-half longer than wide, the parallel and feebly
arcuate sides not very strongly rounded at the humeri; striae rela-
tively coarse, impressed, with strong and conspicuous punctures,
the foveae before basal and at apical third. Length (G?) 2.4 mm.;
width 0.82 mm. Arizona (the locality not recorded). .gratuitum n. sp.

BEMBIDIINTE 131

Form narrower, the size smaller; head and prothorax relatively much
narrower than in either of the two preceding, moderately convex,
polished, black, with piceous tinge; elytra flavate, maculate nearly
as in the preceding; legs and epipleura pale; head barely visibly
narrower than the prothorax, with very prominent eyes; sulci barely
visibly converging; antennae with the medial joints obconic, one-
half longer than wide; prothorax a third wider than long, the base
fully two-thirds the maximum width; sides strongly rounded to the
straight parallel basal part; subbasal impression distinct, rugose,
interrupted medially; fovese moderately deep, oval, the carina short
and feeble; elytra one-half longer than wide, the parallel sides some-
what strongly arcuate, rapidly rounding at the humeri; striae rather
fine, slightly impressed, the punctures small but rather deep, usu-
ally somewhat well separated; foveae as usual, not rigidly fixed in
position, varying from near basal and apical third to before and be-
hind these positions. Length (cf 9 ) 2.1-2.4 rnm.; width 0.7-0.85
mm. California (Sonoma and Sta. Cruz Cos.) and Nevada (Reno).
One of the smallest species of Bembid-ion virgatulum n. sp.

75 — Sides of the prothorax becoming parallel for an appreciable distance
before the basal angles 76

Sides oblique behind, becoming only feebly sinuate near the angles;
elytral striae slightly abbreviated at tip 84

76 — Elytral striae not entire, in part slightly abbreviated at tip 77

Elytral striae entire, the relationship with the preceding analogous to
that of sociale and allies with constrictum and related species in the
preceding section; antennae more slender 80

77 — Frontal sulci parallel or very nearly; species the largest of this ver si-
color section of the subgenus 78

Frontal sulci almost as strongly converging as in the as simile group, but
not coalescent at the front margin of the epistoma 79

78 — Body elongate-suboval, convex, shining, colored as in the preceding,
except that the legs are more obscure, the femora frequently piceous;
head four-fifths as wide as the prothorax, the eyes rather large, mod-
erately prominent; antennae colored as usual, rather more slender,
the medial joints somewhat more than one-half longer than wide;
prothorax moderately transverse, longer than in the two following,
not quite two-fifths wider than long, the parallel part of the base
about a sixth the total length; sides strongly rounded; base less than
three-fourths the maximum width; foveae rather deep, linear, slightly
distant from the moderate carina; elytra fully one-half or more
longer than wide, nearly one-half wider than the prothorax, oblong-
oval in form; striae fine, scarcely impressed, the punctures notably
fine and inconspicuous, moderately separated. Length (cf 9 ) 2.8-
3.2 mm.; width 1.15-1.2 mm. Pennsylvania, New York (Lake
Champlain) and Lake Superior (Marquette and Duluth). Abun-
dant decipiens Dej.

Body more slender and much less ventricose than in the preceding species,
the elytra black, with the paler markings small and widely isolated,
shining, the elytra slightly less so; head smaller than in decipiens,
much narrower than the prothorax; eyes somewhat similar but

132 MEMOIRS ON THE COLEOPTERA

slightly less prominent, the sulci finer; antennae blackish, gradually
testaceous basally, three-fourths as long as the elytra, with the
medial joints not quite twice as long as wide; prothorax nearly as
in decipiens, but with the parallel basal parts of the sides shorter,
the sides less strongly rounded anteriorly than in either of the two
preceding; foveae deep, rather close to the short carina; elytra three-
fifths longer than wide, two-fifths wider than the prothorax, parallel,
with broadly arcuate sides, the striae fine, feebly impressed and finely
punctate; pale maculae forming a slender subhumeral ring open
internally, also a narrow oblique fascia near apical third, extending
to inner third, the tip not pale. Length (9 ) 2.65 mm.; width 0.85
mm. New York (Long Island), — Shoemaker. . . . rotundiceps n. sp.

Body a little larger, stout, convex, on the whole less shining but with
similar style of coloration; head not greatly developed, though fully
three-fourths as wide as the prothorax, the eyes notably smaller,
only moderately prominent; antennae thicker, black, the basal joint
very obscurely rufous, the obconic medial joints barely one-half
longer than wide; prothorax fully two-fifths wider than long, having
still less strongly rounded sides and broader base, this being nearly
four-fifths the maximum width, the parallel part at the base not
quite a fifth the total length; foveae very moderate, deep, the carina
short and fine; elytra rather long, oblong-suboval, the striae fine,
unimpressed, with the very moderate punctures well separated; foveae
before basal and near apical third; hind tarsi rather short, three-
fourths as long as the tibiae. Length (cf 9 ) 2.9-3.2 mm.; width
1.1-1.25 mm. British Columbia (Metlakatla), — Keen.

tolerans n. sp.

79 — Form moderately stout, the body small in size, convex, polished
throughout, deep black, without pronounced metallic lustre; elytra
black, the anterior half, in about external half of each, tawny rufous,
this area approaching the suture more closely at two-fifths; near
posterior third there is an external pale oblique fascia, extending to
the third stria, the apex also pale; under surface black, the inflexed
sides and legs blackish-piceous; head rather more than three-fourths
as wide as the prothorax, the eyes moderate in size and prominence;
antennae rather long, heavy, blackish, four-fifths as long as the ely-
tra, the medial joints obconic, one-half longer than wide; prothorax
two-fifths wider than long; base three-fifths the maximum width, the
sides strongly, subevenly rounded to the short basal parallel part;
foveae deep, sublinear, the carina feeble; elytra rather short, barely
one-half longer than wide, scarcely more than two-fifths wider than
the prothorax, parallel and with rapidly rounded humeri as usual,
somewhat obtusely ogival behind; striae rather fine, very feebly im-
pressed, the punctures moderately coarse, deep and distinct, rather
well separated; foveae as usual. Length (cf) 2.6 mm.; width 0.9
mm. New Mexico (Jemez Springs), — Woodgate. Three examples,
one of which is probably a female egens n. sp.

Form narrower and more parallel, small, convex, polished, piceous-black,
the femora piceous; elytra with paler maculation as in egens, except
that the apex is not pale; head four-fifths as wide as the prothorax,

BEMBIDIIN/E 133

the eyes moderate in size, rather prominent; converging sulci narrow,
deep and straight as in egens and the assimile group; antennae piceous,
rather long and heavy, the strongly obconic medial joints scarcely
one-half longer than wide; prothorax nearly as in egens; elytra nar-
rower, slightly more than one-half longer than wide, two-fifths wider
than the prothorax, obtusely parabolic at tip, the parallel sides more
arcuate than in the preceding and the humeri less strongly rounded;
striae nearly similar and with distinct and more close-set punctures,
but differing very much in becoming obsolete in apical fourth and
not evident to within a short distance of the apex as in egens and
the others preceding; foveae nearly as in egens. Length (9) 2.5
mm.; width 0.85 mm. Arizona (near Benson), — Dunn.

demissum n. sp.

Form moderately narrow and convex, highly polished and deep black
throughout, the elytra without evident paler maculation, excepting
a small spot at the middle of the base of each; legs piceous; head
four-fifths as wide as the prothorax, the eyes moderate in size and
prominence; antennae rather long and heavy, piceous-black, the
medial joints slightly obconic and distinctly less than twice as long
as wide; prothorax much narrowed basally, fully two-fifths wider
than long, the sides very oblique in about basal half, sinuate only
at the angles, the parallel sides before which are extremely short;
base barely three-fifths the maximum width; foveae moderate, near
the carina, which is very fine, close to the margin and indistinct
under slight magnification; elytra three-fifths longer than wide,
about one-half wider than the prothorax, gradually strongly rounded
behind, the parallel sides arcuate; striae shallow, feebly impressed,
abbreviated at tip, the punctures relatively coarse, deep and rather
well separated basally, finer posteriorly; foveae before basal and near
apical third. Length (cf ) 2.6 mm.; width 0.9 mm. Mexico (Fed-
eral District *indigens n. sp.

Form more parallel, convex, shining throughout, black, with feeble
greenish lustre, the elytra black, indefinitely rufous in more than
outer half to behind basal third, also with a more distinct testaceous
oblique fascia near apical third, extending inward to the third stria,
the apex also pale; legs blackish; head nearly as in the preceding,
the antennae similar in color, rather less thick, the medial joints
about twice as long as wide; prothorax one-half wider than long,
the sides less rounded and less oblique behind than in the preceding;
base nearly three-fourths the maximum width, the subparallel basal
part of the sides a seventh or eighth the total length; foveae rather
long, sublinear, the carina fine but evident; elytra one-half longer
than wide, gradually parabolic behind, barely two-fifths wider than
the prothorax, arcuate at the sides; striae moderate, only very feebly
and not at all sharply impressed, abbreviated well before the tip;
punctures rather small but deep and distinct, moderately separated;
foveae as in indigens. Length (cT) 2.6 mm.; width 0.85 mm. Mex-
ico (Amecameca) *pullulum n. sp.

80 — Antennae with the medial joints obviously less than twice as long
as wide. . . . 81

134 MEMOIRS ON THE COLEOPTERA

Antennae with the medial joints about twice as long as wide 83

8 1- — Elytral strise and punctures extremely fine. Body slender, very
small, moderately convex, black; elytra not very shining, more
strongly micro-reticulate than the anterior parts, nearly black,
\vithout distinct maculation, each indefinitely somewhat paler lat-
erally toward base; under surface black, the legs pale piceo-testa-
ceous; head four-fifths as wide as the prothorax, with moderate
eyes, the frontal sulci parallel; antennae three-fourths as long as the
elytra, blackish, the basal joint obscurely rufescent, gradually thick-
ened distally, the medial joints but slightly more than one-half
longer than wide; prothorax a third wider than long, the sides evenly
rounded to the parallel basal part, which is fully a sixth the total
length; base fully three-fourths the maximum width; impressions
subobsolete, the stria rather deeply impressed; fovese moderate,
linear, the carina short; elytra more than one-half longer than wide,
gradually parabolic in apical two-fifths, two-fifths wider than the
prothorax; striae not evidently impressed, the very small punctures
moderately separated; foveae subequal, near basal and apical third.
Length (9) 2.35 mm.; width 0.7 mm. California (Lake Co.),—
Fuchs triviale n. sp.

Elytral striae less fine and slightly impressed, the punctures very dis-
tinct though small 82

82 — Body rather narrowly oblong-oval, moderately convex, black, the
elytra feebly alutaceous and with very feebly defined paler mark-
ing, a transverse biarcuate pallid fascia behind the middle, in a darker
region, being among the more obvious features; under surface black,
the legs piceous; head three-fourths as wide as the prothorax; anten-
nae blackish, rather slender, three-fourths as long as the elytra, the
medial joints about three-fourths longer than wide; prothorax two-
fifths wider than long, the sides strongly rounded to the short parallel
basal parts; fovese broadly impressed and more opaque, linear at
the bottom, the carina distinct; elytra more than one-half longer
than wide, two-fifths wider than the prothorax, gradually rounding
behind, the small punctures of the feebly impressed striae distinct
and rather close-set; foveae equal, near basal and apical third.
Length (cf 9 ) 2.5-2.7 mm.; width 0.8-1.0 mm. California (St.
Helena, Napa Co., and Mt. Diablo) sordidulum Chd.

Body still narrower, moderately convex, black, the elytra feebly palles-
cent, with very nubilous darker marking, of which a median unde-
fined fascia and a subapical area are more noticeable; under surface
black, the legs dark rufous; head three-fourths as wide as the pro-
thorax, with the eyes very moderate both in size and prominence;
antennae unusual in development, blackish, obscurely rufous basally,
rather thick although filiform and not distinctly longer than the
head and prothorax, the medial joints barely one-half, the tenth
joint only a third, longer than wide, the third much longer than
either the second or fourth as in the other allied species; prothorax
two-fifths wider than long; base three-fourths the maximum width;
sides moderately rounded, oblique and sinuate basally, the parallel
part shorter than usual; foveae small, sublinear, slightly separated

BEMBIDIIN/E 135

from the distinct carina; elytra one-half or more longer than wide,
nearly one-half wider than the prothorax, parallel, with arcuate
sides and evenly rounded apex; striae fine, feebly impressed, the punc-
tures small but distinct; foveae subequal, near basal and apical third.
Length (9) 2.65 mm.; width 0.85 mm. California (Lake Co.),—
Fuchs temperans n. sp.

83 — Prothorax short and more transverse, three-fifths wider than long.
Body oblong-suboval, rather convex, black, with feeble greenish
lustre, the head barely visibly alutaceous; elytra brownish-flavate,
with a feeble scutellar cloud, the anterior foveae, a transverse bi-
arcuate medial fascia and a large subapical area, divided by the sut-
ure, blackish; legs blackish-piceous; head three-fourths as wide as
the prothorax, the eyes rather prominent; antennae slender, nearly
three-fourths as long as the elytra, blackish, the basal joint rufous,
the medial joints fully twice as long as wide; prothorax with moder-
ately arcuate sides, the basal parallel part nearly a fifth the total
length; base broad, almost four-fifths the maximum width; foveae
deep, linear, distant from the very distinct carina; elytra three-fifths
longer than wide and less than one-half wider than the prothorax,
the parallel sides broadly arcuate; striae moderately fine, feebly im-
pressed, the punctures not coarse but deep and conspicuous, rather
close-set; foveae near basal and apical third. Length (cf 9 ) 2.6-
2.85 mm.; width 1.0-1.2 mm. Utah (Provo — Wickham; also south-
ern part of the state — YVeidt). Rocky Mts. — LeConte.

timidum Lee.

Prothorax much less abbreviated. Body oblong, very moderately con-
vex, shining, the head not alutaceous, black, with subaeneous lustre,
the elytra brownish-flavate, marked as in timidum; under surface
black, the inflexed sides and legs dark testaceous; head three-fourths
to four-fifths as wide as the prothorax, the eyes rather prominent;
frontal sulci almost truly parallel; antennas piceous, rather long and
slender, three-fourths as long as the elytra, the medial joints ob-
conic and barely or scarcely twice as long as wide; prothorax scarcely
more than a third wider than long; base three-fourths the maximum
width,; outer basal parts dull, the foveae small, deeply impressed,
the carina short and fine; sides broadly, evenly rounded, the parallel
basal part a sixth the total length; elytra slightly more than one-half
longer than wide and fully one-half wider than the prothorax, arcu-
ate at the sides; striae moderate, deep, distinctly impressed, the punc-
tures fine but distinct, rather close-set; foveae as usual. Length
(d* 9 ) 2.4-2.9 mm.; width 0.8-1.0 mm. California (coast regions,
from Sta. Cruz to Humboldt) flavopictum Mots.

84 — Form elongate-suboval, moderately convex, shining, the elytra very
feebly alutaceous, black, with testaceous legs and epipleura, the
elytra black, tawny at the sides in more than basal third, more in-
wardly at basal third opposite two small elongate spots on the
third interval — before and behind the fovea, also in an oblique
fascia near apical third, extending to the third stria, and also in an
apical area, the pale spots composed of lines separated by the black
striae; head three-fourths as wide as the prothorax; antennae rather

136 MEMOIRS ON THE COLEOPTERA

heavy, fully three-fourths as long as the elytra, fuscous, gradually
pale basally, the medial joints slightly less than twice as long as
wide; prothorax fully two-fifths wider than long, the sides strongly
rounded, oblique in basal half, gradually very moderately sinuate
toward the angles; base three-fourths the maximum width; fovese
long, linear, distant from the rather long distinct carina; elytra fully
one-half longer than wide, two-fifths wider than the prothorax,
parallel, with arcuate sides; striae fine, scarcely impressed, feebly so
suturally, the punctures fine but deep, not very close-set; foveae
near basal and apical third, the posterior the smaller. Length (cf 9 )
2.35-2.8 mm.; width 0.75-1.0 mm. Summit of Mt. Washington,
New York (Lake Champlain) to northern Illinois and Duluth,
Minnesota. Abundant versicolor Lee.

Form shorter, the surface rather more convex, deep black, highly pol-
ished, the elytra scarcely less so; elytra black, maculate very nearly
as in versicolor; legs bright rufous; head three-fourths as wide as the
prothorax, the eyes rather less prominent than in the preceding;
antennas nearly similar; prothorax relatively larger, similar in gen-
eral outline, the hind angles slightly obtuse, the foveae shorter, oval,
closer to the carina, which is notably shorter; elytra barely one-half
longer than wide, nearly two-fifths wider than the prothorax, more
obtusely rounded behind, the parallel sides similarly arcuate, the
striae, punctures and fovese almost as in versicolor. Length (cf1 9 )
2.4-2.5 mm.; width 0.75-0.8 mm. Rhode Island (Boston Neck).

pellax n. sp.

85 — Body very small, rather slender, subparallel, convex, subalutaceous,
pale castaneous in color, the elytra slightly paler, perfectly uniform;
legs very pale flavate; head suborbicular, three-fourths as wide as
the prothorax, the subparallel sulci rather distant from the eyes, the
latter very moderate in prominence; antennae rather thick, four-fifths
as long as the elytra, fuscous, pale testaceous basally, the medial
joints not quite twice as long as wide; prothorax large, between a
fourth and third wider than long, widest at two-fifths from the apex;
base two-thirds the maximum width and distinctly narrower than
the apex; sides rather narrowly reflexed, broadly, subevenly rounded,
oblique in about basal half, becoming feebly sinuate toward the
angles, which are sharp and right; apex truncate; anterior impres-
sion distinct medially, the posterior broad, deep and subangular,
the stria very fine; foveae small, deep, sublinear, the carina short,
fine and indistinct; elytra oblong-oval, one-half longer than wide,
only a third wider than the prothorax, the parallel sides arcuate,
rather broadly rounding at the humeri, broadly parabolic behind;
striae fine, feebly impressed, entire; punctures small, feebly impressed,
very widely separated, except in the first two striae, the scutellar
stria very short, of about two punctures; foveae before basal and near
apical third. Length (G?) 2.4 mm.; width 0.8 mm. Ontario (Ot-
tawa),— \V. H. Harrington muscicola Hayw.

86 — Elytra in great part black; body larger in size. Form oblong-
suboval, moderately convex, shining, the elytra feebly alutaceous,
black, the anterior parts with feeble greenish lustre; elytra without

BEMBIDIIKLE 137

metallic lustre, faintly and nubilously pale laterally toward base,
at the extreme apex and more distinctly in a biarcuate fascia near
apical fourth; under surface black, the legs piceous or nearly black;
head rather small, scarcely three-fourths as wide as the prothorax,
with moderate, very convex eyes and strong parallel sulci; antennae
piceous, with black basal joint, rather heavy, three-fourths as long
as the elytra, the medial joints not quite three times as long as wide;
prothorax nearly one-half wider than long; base narrower than the
apex, fully three-fourths the maximum width; sides strongly, sub-
evenly rounded, barely visibly sinuate basally, the angles minutely
subprominent; impressions subobsolete; foveae broadly impressed,
shallow and rugose, the carina strong, moderately long; elytra ob-
long, nearly three- fifths longer than wide, obtusely rounded at apex;
striae fine, entire, not evidently impressed and very finely punctate,
the punctures rather close-set; foveae near one and three fourths and
four-sevenths. Length (c? 9 ) 5.0-6.3 mm.; width 1.9-2.25 mm.
Utah (Provo and Little Salt Lake), — Wickham. Nine examples.

scudderi Lee.

Elytra in great part pale brownish-flavate 87

87 — Prothorax subequal to the elytra in width, the upper surface moder-
ately convex. Form parallel; surface polished throughout, deep
black anteriorly, the elytra with a feeble scutellar cloud, small spots
at the anterior foveae, a biarcuate, slightly post-median fascia and,
each, a small area between this and the apex, blackish; under surface
black, the legs piceous, the epipleura and hypomera in great part
pale; head larger, fully three-fourths as wide as the prothorax, the
eyes moderate but prominent; sulci broad and deep; antennae fusco-
testaceous, three-fourths as long as the elytra, the medial joints as
in scudderi; prothorax slightly more than one-half wider than long,
otherwise as in scudderi, the sides not quite so broadly reflexed;
elytra oblong, parallel, nearly three-fifths longer than wide, in form
and convexity almost as in scudderi, except that they are only very
little wider than the prothorax and the surface is more shining;
striae entire, not quite so fine and more impressed, the punctures
not so minute, distinct and more widely separated; foveae appar-
ently similar. Length (9) 5-6 mm.; width 2.0 mm. Colorado

(Colorado Springs), — Wickham consimile Hayw.

Prothorax much narrower than the elytra; upper surface strongly de-
pressed. Form oblong-elongate; lustre shining, black, the anterior
parts with bright green reflections in the depressions and anterior
and posterior rugosities of the pronotum; elytra with black macu-
lation almost as in the preceding, except that the fascia is more
post-median, the concavity along the margin black, with green lustre
medially; under surface black, with greenish lustre, the legs and epi-
pleura rufous; head nearly as in consimile, the testaceous antennae
shorter and thicker, the medial joints twice as long as wide; prothorax
two-fifths wider than long, the general outline as in the two preceding,
except that the sides are less broadly rounded before the middle and
become distinctly sinuate basally, the angles sharp, right and sub-
prominent, the sides of the base more oblique; basal impression much

138 MEMOIRS ON THE COLEOPTERA

deeper, not at all interrupted medially and strongly viridi-rugose,
the foveee larger, shallow and strongly rugose, the carina distinct;
elytra three-fifths longer than wide, fully two-fifths wider than the
prothorax, parallel, with nearly straight sides, rapidly obtuse at
apex; striae nearly as in consimile but scarcely impressed, the punc-
tures finer; foveae near basal third, at three-fifths and at six-sevenths.
Length (cf ) 4.8 mm.; width 1.7 mm. Utah henshawi Hayw.

The division of the greater part of the very numerous species of
the variegatum section of Notaphus on geographic lines, appears to
be appropriate, since no species known to me inhabits regions both
to the east and west of the great backbone of the continent; some
found on the Pacific slope resemble and have been confounded with
eastern species of the patruele type, but they are all distinct and no
more than closely allied. This division, as established by natural
evolution, is a boon not only to the taxonomist, but to the collector
endeavoring to identify his material, since sharply drawn differ-
ential characters of a general nature are exceedingly few in this
most difficult section of the subgenus. It should also be said, in
reference to the first character used above to define sections of the
subgenus Notaphus, that there are some exceptions. For instance,
under those having the base of the prothorax as wide as the apex
or wider, a few such as extricatum, caudex and pimanum, have the
base more or less evidently narrower than the apex, but the rest of
the organization and peculiarities of ornamentation prevent us from
disassociating them. So also in the case of the so-called dentellum,
the prothorax is not narrower at base than at apex, but the general
physiognomy of that species places it among the allies of constric-
tum; in graciliforme Hayw., in fact, the base is said to be narrower
than the apex, though this is not apparent in a specimen which I
received under that name, said to have been identified by the author
himself. It is because of the existence of the subspecies gracili-
forme, that I regard this dentettum-like form to have been long estab-
lished in America, and therefore probably not identical with the
European dentellum; it is recorded above under the LeContean name
arcuatum.

The species imperitum and prociduum, above described from the
Puget Sound region, are sometimes identified as coloradense Hayw.,
but the statements that the prothorax is nearly twice as wide as
long and the elytra only slightly wider than the prothorax in colo-

BEMBIDIIN.E 139

radense, are so manifestly incongruous, that that species, from the
mountains of southwestern Colorado, must assuredly be a different
thing. It is singular that no example of the bright cupreous species
from idoneum to continens, described above, appears to have fallen
under the observation of earlier writers; obseqtiens is so much smaller
and narrower than typical idoneum, that additional material may
prove it to be specifically distinct.

As remarked by LeConte, the Marquette specimens identified
above as nigripes Kirby, are apparently so much smaller than Kir-
by's measurements would indicate, that they may not properly
represent that species, but whether identical or not, they at least
belong to a very isolated species of the subgenus. My two speci-
mens of umbratum Lee., are much smaller than the average given
•by LeConte and Hayward, but I have reason to believe that the
species is truly represented by them ; it is to be noted that the closely
allied variolosum also varies unusually in the size of individuals.
The Mexican semifasciatum Say belongs to the subsection augurale
—simulator, as limited above.

The species peculiar to the Pacific coast regions, generally with
rather convex surface and always having the elytral maculation
more or less obscure, are much more numerous than I had antici-
pated before studying them attentively, and I am under some doubt
concerning the identification of approximation and consentaneum of
LeConte; those selected agree with the original inadequate descrip-
tions, but the matter could not be settled conclusively without ac-
tual comparison with the types if they still exist. Gulosum is re-
lated apparently to suspectum Blaisd., but the prothorax is oblique
at the sides in fully basal half, the anterior thoracic angles are less
bluntly rounded and the maculation of the elytra is somewhat dif-
ferent.

It is to be regretted that the erroneous identification of varie-
gatum Say, with patruele Dej., whoever may have been responsible
for it, should have taken so permanent a hold as to be repeated by
Mr. Hayward, for it is this error that caused Dr. Hamilton to
describe his postfasciatum as a new species. Referring to Say's
description of variegatum, it may be seen that its resemblance to
dorsale is so close, especially in the peculiar type of elytral ornamen-
tation, that the author was in some doubt whether it should not

140 MEMOIRS ON THE COLEOPTERA

rather be regarded as a variety of that species; this alone would
indicate the true variegatum to be the species described as post-
fasciatum by Hamilton; but the subject is conclusively set at rest
by the length ascribed to variegatum by its author — \ inch, or 5
mm. — which suits postfasciatum perfectly, but is much too great for
even the largest known example of patruele or of posticum, although
Say apparently included some of these forms in his general concep-
tion of variegatum.

It is probable that rubiginosum Lee., which is unknown to me,
belongs to the same section as novellnm, a very peculiar minute
species from the Sierras of California; rubiginosum occurs in the
mountains of Colorado, at Garland.

In the vile section, no one of the above described species can be
identified definitely with any one of the three already known. I
have personally compared the type of parabile with that of vile,
from San Diego, and the two differ greatly, especially in the much
broader prothorax of the former, and also of that of the still more
minute and slender diligens. In regard to morulum Lee., recalling
concolor in form and habitus, as intimated by Hayward, and in-
habiting more northern regions in Hudson Bay Territory, little fur-
ther need be said, as I have seen nothing resembling it. It only
remains to compare the type of dyschirinum Lee., said to be from
the country east of old Fort Colville; it is possible that either agi-
tabile or atrolucens may be identical, but in view of the inadequate
character of all accessible descriptions, absence of the type and
manifold plurality of allied species, it would be useless to assign
LeConte's name to any one of those here described; it would at
best be but a guess and, in case of future proven identity, it will
be easy to place the proper name in synonymy. Attention should
be called to an evident mistake by LeConte in giving .19 inch or
4.7 mm. as the length of dyschirinum; this is corrected by Hayward,
who gives the length as 3 to 3.75 mm.

Vinmilum was identified by Horn and Hayward as scintillans
Bates, from the southern parts of Mexico, presumably because of a
remark made by Bates to the effect that specimens assumed by
Horn to be vinnulum, departed so little from scintillans as to be
unworthy of a distinctive name, differing only in the striae being
less impressed and losing their punctures at a greater distance from

141

the apex; but it is stated under the description of scintillans, that
the color of the body is viridi-aeneous, the elytra ornamented with
flavate lines, and the length as 4.6 mm. ; also that the frontal sulci
are short and the sides of the prothorax sinuate basally, with the
angles right. None of these characters suits vinnulum at all well,
and I therefore have no doubt that the two species are distinct.
Definitum is evidently a related species, but differs in the small
elytral punctures, color, shorter antennae, form of the prothorax
and many other characters. The knowledge of these two species
from Arizona, demonstrates that there are a number of distinct
species of the vinnulum section as defined above.

It is probable that the Alaskan incrematum Lee., given as a sub-
stitute for nigripes Mann., a preoccupied name, is distinct and in
no way a synonym of den tell urn, or its American representative
arcuatum Lee., as stated by Hayward. The coloration of the legs
must be quite different and the localities of the two forms are re-
motely separated.

I fail to find anything resembling the true cor datum Lee., among
my material and the above description is derived from the original;
placabile is smaller, more slender, probably less flat above and has
a different scheme of elytral maculation, as can be observed from
the description; it also inhabits a climatically very different sec-
tion of the country. The elytral maculation of cordatum, judging
by the description, is evidently more of the patruele type, while that
of placabile agrees perfectly with the peculiar insulatum type of
maculation, this being quite different from that of patruele and its
numerous allied species, especially in the humeral region of the ely-
tra.

T'ie species acticola and vividnm were erroneously reduced to
synonymy by Horn and Hayward ; the former is decidedly a smaller
species than either contractum or constrictum, with smaller head
and prothorax than either and also having a more slender form
than constrictum and notably shorter elytra than contractum, while
vividum is wholly out of place when associated with any one of the
three mentioned, being a member as it is of a peculiar subsection
represented above by the Floridian prosper -urn and luculentum,
which are characterized by the very much narrower base of the
prothorax, greatly abbreviated elytral striae and deep black polished

142 MEMOIRS ON THE COLEOPTERA

surface. The elytral punctures of mmdum are much less coarse
than in either prosperum or luculentum, these two being mutually
distinguishable by the smaller head, and smaller and differently
shaped prothorax of luculentum. Constrictum seems to be more
essentially a maritime species, or at least I have seen no specimens
taken far from the seashore. The individually abundant, smaller
and narrower species, widely distributed from Lake Superior to
Texas, named sociale above, has doubtless been hitherto confounded
with constrictum; it however differs altogether in the striation of
the elytral apex, besides its shorter prothorax, narrower form and
smaller size; at its southern limit of distribution, there is a form
taken by Wickham at Dallas, which might appear to be varietally
different, being somewhat narrower, flatter, with less deep black
elytra and a still slightly wider head ; negligens and fugitans are also
closely allied to sociale, but I believe them to be distinct, judging
by the habitus and other structural evidences, in conjunction with
their widely different geographic environments.

The species allied to affine and versicolor constitute a clearly cir-
cumscribed section of Notaphus, which has been very inadequately
studied heretofore. As organized above, however, it includes three
well differentiated subsections, represented by affine, with parallel
frontal sulci, feebly transverse and basally much narrowed pro-
thorax and longer, very slender antennae; versicolor, with subparallel
sulci, broader thoracic base and less elongate and usually thicker
antennae, and egens and the other three associated with it in the
table, having strongly converging sulci, almost is in the assimile
group, but well separated at apex and not confluent as they are in
that group, and also having a somewhat different scheme of elytral
maculation. Cognatum Dej., is evidently allied to pulhthim, but
the only pale elytral markings of cognatum are the apex and a small
posterior external spot, and the obliquity of the frontal sulci ap-
pears not to be so decided, from the language used by Dejean—
"un peu oblique." There are evidently a considerable number of
species allied to cognatum, of which four are described above, and
they may possibly be held to form a distinct section of Notaphus,
constituting one of its bonds with the assimile group.

The common Texas species with large head and prominent eyes,
named imbelle above, extends to the northward through the Mis-

BEMBIDIIN^; 143

sissippi Valley, but not to the dry and climatically very different
western country, where it is replaced by impotens, having entire
elytral striae. Flavopictum, from the northern California coast, re-
sembles impotens and has the head relatively almost as large, but
can easily be observed to differ in its narrower body and less thick-
ened antennas. These three species were confused by Mr. Fall (Tr.
Am. Ent. Soc., 1910, p. 97) under the name pictum or flavopictum.
That author also confounded the local mountain species, with entire
elytral striae, named timidum by LeConte, with the more widely
diffused northern species decipiens and versicolor, having slightly
abbreviated striae. Mr. Hayward was decidedly in error in stating
both decipiens andfallax of Dejean, to be synonyms of affine; fallax
is truly a synonym, but decipiens is quite different and was far re-
moved from fallax in the work of Dejean. The subobsolete sinua-
tion of the sides of the prothorax in versicolor, was specially men-
tioned by LeConte; this separates it very clearly from the larger
decipiens; it is a widely distributed and abundant northern species.

The species described by Hayward under the name miiscicola—
previously identified erroneously as the European lam-pros — should
not have been associated with affine by its author; it differs greatly
in general habitus due to its more oval, uniformly colored elytra,
large prothorax, widely spaced elytral punctures, short scutellar
stria, alutaceous lustre and in other ways; in fact, it is one of the
more isolated species of the entire genus.

The scudderi section of Notaphus is also isolated by reason of gen-
eral habitus, and especially, because of the three dorsal foveae of
the elytra, but cannot for the latter reason alone, be separated as
a distinct group of Bembidion, as shown previously under the bifas-
ciatum group. My single example of con simile lacks all trace of
the middle fovea on both elytra, though the others are normal and
in the usual very anterior and posterior positions. Hageni Hayw.
(sexpunctatum \\ Lee.) from the lower Colorado River Valley, is
unknown to me and is apparently still represented solely by the
single type specimen.

144 MEMOIRS ON THE COLEOPTERA

Group XIII — sphceroderum
Subgenus Cyclolopha nov.

Species resembling the singular Bembidion sph&roderum, described
by Mr. Bates from Mexico (Biol. C.-A., I, i, 1882, p. 147), occur in
Arizona and New Mexico, but appear to have been unknown to
our earlier reviewers. In their small, oblong-oval, convex body and
virtual absence of posterior thoracic angles, they suggest somewhat
the European subgenus Philochthus, but on comparison with Phi-
lochthus guttula and biguttatus Fabr., as depicted by Duval, they
are seen at once to differ in the very much more obliterated hind
angles of the prothorax, and also in the presence of a coarsely beaded
margin along the thoracic base, in which they resemble Lopha more
than they do Philochthus, and, as further proof of this relationship,
Mr. Bates has described Mexican species, such as cyclodes, with
elytral maculation resembling somewhat that seen in Lopha quadri-
maculata. Cyclolopha may be regarded, however, as the American
analogue of Philochthus. The four species at hand may be de-
scribed as follows :

Elytra oblong, with parallel, feebly arcuate sides 2

Elytra oval, with strongly arcuate sides 3

2 — Form parallel, moderately convex, highly polished and black through-
out above, without metallic lustre; under surface piceous, the in-
flexed sides and legs rufous; head two-thirds as wide as the prothorax,
with moderate, prominent eyes and narrow, slightly converging
sulci; antennae moderately slender, two-thirds as long as the elytra,
fuscous, gradually testaceous basally, the medial joints slightly more
than twice as long as wide; prothorax nearly four-fifths wider than
long, the sides subparallel, almost evenly, moderately rounded and
well reflexed, rounding rapidly at base and obliquely arcuate thence
to the thoracic pedicel, which is strongly beaded and one-half the
maximum width; the hind angles can barely be traced by the pos-
terior setigerous fovea on the upturned edge; impressions obsolete,
the stria excessively fine, subobsolete; foveae very small, smooth,
moderately deep, at the obtuse angle between the base and the ob-
liquely arcuate sides adjoining; there is no trace of a carina; elytra
three-fifths longer than wide, only a fourth or fifth wider than the
prothorax, parallel, the sides rapidly rounding at the humeri; apex
gradually parabolic; striae extremely fine, unimpressed, obsolete be-
hind the middle laterally and in posterior third inwardly, only the
sutural entire, deep and groove-like; seventh stria completely want-
ing; punctures minute, feeble; foveae near basal fourth and apical
third, the anterior very close to the third stria, the other medial on
the interval. Length (cf ) 3.6 mm.; width 1.3 mm. Arizona (Grand
Canon of the Colorado), — T. Mitchell Prudden occultum n. sp.

BEMBIDIIN^: 145

Form slightly more ventricose, shorter, black, highly polished, not met-
allic; under surface black, the epipleura rufo-piceous, the legs dark
rufous, the femora blackish; head more than three-fourths as wide
as the prothorax, with prominent eyes and narrow, moderately con-
verging sulci, with an elongate anterior fovea external to the sulcus
as in Lopha; antennae fuscous, the first three to four joints testa-
ceous, shorter than in occiiltum, the medial joints not quite twice as
long as wide; prothorax as in the preceding but smaller and less
transverse, two-'thirds wider than long, the parallel arcuate sides
well reflexed; surface throughout similar, except that both the trans-
verse impressions are evident medially, though feeble; elytra much
shorter, parallel, one-half longer than wide, two-fifths wider than the
prothorax, the humeri very rapidly rounded; apex gradually para-
bolic; striae feebly and broadly impressed, obsolete in apical third,
the seventh wanting, the sutural as usual; punctures rather small
and widely spaced but distinct; foveae as in occiiltum. Length (d71)
3.3 mm. ; width 1.23 mm. Mexico (Cuernavaca) . . *aztecanum n. sp.

3 — Body rather strongly convex, polished, black, with scarcely metallic
lustre, the under surface and legs rufous; head fully three-fourths as
wide as the prothorax, with large and prominent eyes and slender,
slightly oblique sulci; antennae but little shorter than the elytra,
testaceous, fuscous and somewhat incrassate distally, the medial
joints between two and three times as long as wide; prothorax two-
thirds wider than long, widest near apical third, the sides strongly
rounded, becoming gradually less rounded and strongly converging
behind about the middle, the posterior seta marking the position
of the extremely obtuse and obliterated hind angle; base one-half
the maximum width; impressions subobsolete; foveae as in occiiltum
but rather more linear; sides well reflexed, the basal bead strong;
elytra one-half longer than wide or less, a fourth or fifth wider than
the prothorax, oval, the humeri gradually and broadly rounded;
striae moderate, obliterated in apical two-fifths — or half laterally—
the seventh represented by a few subbasal punctures and barely
impressed; punctures not very fine, well separated and distinct;
foveae before basal and at apical third, the anterior near the third
stria as usual. Length (c? 9 ) 3-2 mm.; width 1.2 mm. Mexico
(Colonia Garcia, Sierra Madre Mts., Chihuahua), — Townsend.

*furtivum n. sp.

Body similarly convex but more ventricose, piceous-black and shining;
under surface piceous, the legs pale flavo-rufous; head not quite so
large, though three-fourths as wide as the prothorax, the eyes and
sulci nearly similar, the anterior fovea outside the sulci short and
inconspicuous; antennae rather short, blackish, gradually rufous
basally, the medial joints barely twice as long as wide; prothorax
less transverse and smaller than in furtivum, barely one-half wider
than long, widest slightly before the middle, the sides more evenly
and rather strongly rounded, gradually converging behind; base
somewhat more than one-half the maximum width; impressions
similarly very feeble, the basal bead strong and conspicuous; foveae
T. L. Casey, Mem. Col. VIII, Oct. 1918.

146 MEMOIRS ON THE COLEOPTERA

small and feeble; elytra evenly oval, not quite one-half longer than
wide, almost two-fifths wider than the prothorax, the striae and punc-
tures nearly as in furtivum, but rather finer. Length (cf) 2.9 mm.;
width 1.15 mm. New Mexico (Jemez Springs), — Woodgate.

minax n. sp.

The species described above under the name furtivum, has a dis-
tinctly smaller prothorax, when compared with the width of the
elytra, than in 'sphceroderum Bates, as shown by the drawing of
the latter on the plate; this, in connection with the blackish femora,
leads me to believe that it is distinct; perhaps it may be the indi-
cated variety of sphceroderum with partially obscure legs, or closely
related thereto. As there are, however, evidently a considerable
number of species in this group, which is widely distributed over
the various parts of Mexico, Arizona and New Mexico, there is
but little possibility of actual specific identity of furtivum with
splmroderum. The above species are in no cases closely allied among
themselves.

Group XIV — quo drimacula turn
Subgenus Lopha Steph.

The rather numerous very small species of this subgenus stand
apart from the majority of types in the genus Bembidion in several
striking characters. For example, the sides of the prothorax basally
become briefly and feebly sinuate just before a minute projection
bearing the strong setigerous puncture; this hind angle is, however,
by no means at the extreme base, for the sides of the latter are very
oblique for a short distance from the median truncate part or base
proper, the general structure being in this respect suggestive of the
preceding group, and, in a similar way, the subbasal impression
takes the form of a continuous, but here strongly punctured, chan-
nel, delimiting the strongly beaded basal margin. At the minutely
prominent hind angle there is in all known species a very minute
fine carina, only observable under considerable enlargement; this
is not wanting in mutatum and related forms as stated by Mr. Hay-
ward. Between the moderately oblique frontal sulci and each side
margin, there is anteriorly an elongate irregular fovea, which, in
conjunction with the regular superciliary puncture, gives the ap-
pearance of a duplication of the sulci, with the outer sulcus inter-

BEMBIDIIN/E 147

rupted; but this condition properly should not be so described; the
anterior external impression is also observable in the preceding
group; it may be held, however, to presage the extreme develop-
ment seen in sulcatum. The elytral strife in Lopha are always
much abbreviated behind. Our species are rather numerous and
may be defined as follows:

Elytra highly polished throughout 2

Elytra with micro-reticulation, which is sometimes distinct under proper

enlargement but often very feeble and apical only 10

2 — Punctures of the elytral striae small 3

Punctures of the striae relatively coarse or strong, deep and more con-
spicuous 9

3 — Elytra each with an anterior post-humeral and posterior, external,

pale spot 4

Elytra each with but a single spot, post-humeral in position 6

4 — Elytra with the four spots well developed and always evident, the
posterior never obsolete so far as observed. Body moderately ven-
tricose, polished, black, rather convex; under surface black, the epi-
pleura piceous, the legs rufous; head scarcely to evidently narrower
than the prothorax; antennae as long as the elytra, thick, fuscous,
gradually testaceous basally, the medial joints twice as long as wide;
prothorax two-fifths or slightly more wider than long; base three-
fifths the maximum width; sides strongly rounded anteriorly as
usual; foveae smooth, small, deep; fine impression along the basal
bead with a series of moderate punctures, more or less obsolete at
the middle; elytra oblong-oval, one-half longer than wide, two-fifths
to half wider than the prothorax; striae unimpressed, the punctures
fine, well separated, obsolete from slightly behind the middle; foveae
near basal fourth and apical third. Length (a71 9 ) 2.6-3.4 rnm.;
width 0.8-1.2 mm. Rhode Island to Colorado (Boulder Co.).
Generally somewhat abundant. [Bemb. oppositum Say]

quadrimaculatum Linn.
Elytra with the anterior spots always distinct, the posterior very small

or faint and frequently wholly invisible 5

5 — Body notably elongate, convex, polished, black, usually with faint
bronze lustre, the post-humeral spots extending inward to about the
middle of each elytron, the posterior spots small and faint, though
generally traceable; under surface black, the legs blackish- piceous;
head fully four-fifths as wide as the prothorax and wider than an
elytron, the eyes well developed; antennae thick, black throughout,
four-fifths as long as the elytra, the medial joints not quite twice as
long as wide; prothorax two-fifths wider than long, widest near an-
terior third; base three-fifths the maximum width; sides anteriorly
strongly rounded; line of punctures before the basal bead confused,
moderately coarse; foveae smooth, not very small, oval and deep;
elytra unusually elongate, three-fifths longer than wide, two-fifths
wider than the prothorax, oblong-oval in form; striae scarcely im-
pressed, obsolete in apical third, the seventh a row of feeble punctures

148 MEMOIRS ON THE COLEOPTERA

to about the middle; punctures strong and well separated basally,
finer posteriorly; foveae much before basal and near apical third.
Length (cf 9 ) 2.8-3.0 mm.; width 0.8-1. i mm. British Columbia
(Agassiz) gregale n. sp.

Body much less elongate, polished, black, the anterior parts with steel-
blue to bronzy lustre; anterior elytral spots large, extending inward
beyond the middle, the posterior small, extremely feeble and often
wholly untraceable; legs rufo-piceous, the femora blackish; head
four-fifths as wide as the prothorax, the eyes large and prominent;
antennse as long as the elytra, fuscous and rather thick distally, grad-
ually less thick and testaceous basally, the medial joints about twice
as long as wide; prothorax in outline as in gregale but relatively
smaller, with smaller foveae and rather feebler line of confused punc-
tures along the bead; elytra barely one-half longer than wide, fully
one-half wider than the prothorax, oblong-suboval, the humeri rather
narrowly rounded; striae fine, not impressed, obsolete in apical third;
punctures distinct and rather widely separated; seventh series not
finer than the others, obsolete at the middle; foveae rather before basal
and behind apical third. Length (cf 9 ) 2.8-3.3 mm.; width i.o-
1.2 mm. Washington State (locality unrecorded; also at Spokane).
Eight specimens pugetanum n. sp.

6 — Species of the coast regions of California 7

Species inhabiting the regions adjacent to the lower Truckee River on the
eastern slope of the Sierras 8

7 — Form elongate-suboval, rather convex, highly polished, black, with-
out metallic lustre, the elytra generally wholly black, but sometimes
with a small and feebly defined post-humeral macula; legs piceo-
rufous, the femora blackish; head well developed, with prominent
eyes, generally but very little narrower than the prothorax; antennae
longer, almost as long as the elytra, blackish, in part rufous basally,
the medial joints more than twice as long as wide; prothorax mod-
erate, barely two-fifths wider than the long; sides subevenly, rather
strongly rounded from apex to a very short parallel part at the ob-
tuse but sharp and subprominent angles; base three-fifths the max-
imum width, the punctures before the bead strong, confused; foveae
moderate, formed as usual; elytra decidedly elongate, suboval, with
rapidly rounded humeri and gradually parabolic apex, distinctly
more than one-half longer than wide and about one-half wider then
the prothorax; striae subimpressed, obsolete somewhat behind apical
third as a rule, the punctures fine and rather close-set; foveae before
basal and near apical third. Length (c? 9 ) 2.9-3.25 mm.; width
1.0-1.15 mm. California (Sta. Cruz to Napa and Sonoma Cos.).
Rather abundant crurale Lee.

Form less elongate; coloration and lustre as in crurale, except that the
legs are more often uniform obscure rufous, although the femora
are sometimes darker, differing especially in having the post-hu-
meral pale spot larger and only seldom barely traceable; head rela-
tively not quite so wide, with similarly large and prominent eyes,
fully four-fifths as wide as the prothorax, the antennae rather thicker
and not quite so long, similar in coloration, the medial joints about

BEMBIDIIN/E 149

twice as long as wide or somewhat less; prothorax nearly similar
in size, general form and structure; elytra shorter than in cnirale
and one-half longer than wide, almost similar in striation, two-fifths
to one-half wider than the prothorax. Length (c? 9 ) 2.7-3.2 mm.;
width 0.9-1.15 mm. California (coast regions from Sonoma to
Humboldt; San Francisco — LeConte) dubitans Lee.

Form, coloration and lustre nearly as in dubitans but narrower and much
smaller, the elytra with an extremely faint subbasal external pal-
lidity, but without trace of anything like a macula; head very mod-
erate, four-fifths as wide as the prothorax, the antennae as in dubitans
but still shorter, the medial joints less than twice as long as wide;
prothorax small, about a third wider than long, in form and struc-
ture nearly as in the two preceding, except that the sides in more
than basal half are less arcuate; elytra in form and striation nearly
as in dubitans but rather narrower, not quite one-half wider than
the prothorax, the foveae behind basal fourth and near apical third.
Length (d71) 2.6 mm.; width 0.8 mm. California (Paraiso Hot
Springs, Monterey Co.) adductum n. sp.

8 — Body stout, suboblong, convex, polished, deep black, the elytra each
with a large pale spot behind the humerus, extending two-thirds to
the suture and not involving the lateral edge, which is black; legs
obscure rufous, the femora blackish; head as usual, three-fourths
as wide as the prothorax; antennae black, heavy, testaceous basally,
with the first three joints blackish above, as long as the elytra, the
medial joints obconic, very nearly twice as long as wide; prothorax
unusually large, one-half wider than long, widest at two-fifths from
apex, the sides evenly and strongly rounded to the very short deep
sinus delimiting the sharp and prominent angles; base three-fifths
the maximum width, the irregularly punctato-rugose channel along
the bead rather deep; foveae small but deep, at the angles as usual;
elytra oblong, barely one-half longer than wide, two-fifths wider
than the prothorax, the sides barely arcuate and the humeri rapidly
rounded; series of fine and widely spaced punctures not impressed,
obsolete in apical third. Length (cf ) 2.7-3.1 mm.; width 0.9-1.2
mm. Nevada (Reno). Four examples sapphicum n. sp.

9 — Form moderately stout and convex, polished throughout, piceous-
black, without marked metallic lustre; elytra each with a distinct
post-humeral pale spot and another smaller, subexternal and near
apical third, the latter sometimes wanting as in the original type;
legs flavate; head four-fifths as wide as the prothorax, the sulci but
just visibly convergent; antennae rather heavy, pale testaceous, in-
fuscate distally, the medial joints barely twice as long as wide; pro-
thorax two-fifths wider than long and widest at apical third; sides
strongly rounded anteriorly, very oblique and but just visibly arcu-
ate from before the middle to the minutely prominent basal angles;
base barely over half the maximum width; impressed line before
the basal bead almost imperceptibly punctate, the foveae small;
elytra one-half longer than wide, two-fifths wider than the prothorax,
oblong, parallel, with arcuate sides, the humeri broadly exposed to
the narrow basal pedicel; striae coarse, impressed, obsolete in about

150 MEMOIRS ON THE COLEOPTERA

apical third, the punctures strong; foveae small, near basal fourth
and apical third. Length (cf) 2.9 mm.; width i.o mm. Pennsyl-
vania (Franklin Co.; near Lancaster — LeConte) . . pedicellatum Lee.

Form narrower, more elongate, polished, black, the elytra maculate as
in the preceding; legs pale brownish-flavate; head relatively larger,
only very little narrower than the prothorax, the sulci deep, barely
converging; antennae very long and slender, a fourth longer than the
elytra, pale brownish-testaceous, infumate near the apex, the medial
joints slightly less than three times as long as wide; prothorax much
less transverse than in the preceding, only about a fifth to fourth
wider than long, similar in general outline, except that the sides an-
teriorly are less prominently rounded; base rather less than half the
maximum width; elytra fully three-fifths longer than wide, less than
two-fifths wider than the prothorax, parallel, with feebly arcuate
sides, the oblique base long from the humeri to the pedicel; series of
coarse and widely separated punctures not distinctly impressed,
obsolete in apical third; foveae as in the preceding; hind tarsi slender,
almost as long as the tibiae. Length (cf) 3.0 mm.; width 0.85 mm.
District of Columbia strigulosum n. sp.

Form much more abbreviated, convex, deep black and highly polished;
elytra with four small maculae as in the two preceding; legs slender,
pale flavate; head but very slightly narrower than the prothorax;
sulci very feebly converging as usual, more so on the epistoma than
on the front; antennae rather slender, much longer than the elytra,
fuscous, becoming testaceous in about basal half, the medial joints
feebly obconic, two and one-half times as long as wide; prothorax a
fourth wider than long, the sides strongly, evenly rounded anteriorly,
very oblique and straighter in basal half to the minute and feebly
prominent angles; punctures in the series before the basal beading
small; foveae minute; base distinctly less than half the maximum
width; elytra short, scarcely one-half longer than wide, almost one-
half wider than the prothorax, differing in outline from those of the
two preceding in being posteriorly inflated, distinctly wider behind
the middle than at base; series of rather strong and moderately sep-
arated punctures evidently and coarsely impressed toward the su-
ture, but not externally, obsolete near apical third; foveae small, just
before basal and at apical third; hind tarsi very slender, only slightly
shorter than the tibiae. Length (cf 9 ) 2.7-3.0 mm.; width 0.8-
0.92 mm. Missouri (St. Louis) and Illinois (Highland Park).

fastidiosum n. sp.

10 — Elytra each with a well developed post-humeral pale spot, but with-
out trace of a posterior macula 1 1

Elytra, in the single specimens at hand, without trace of paler macu-
lation 12

ii — Body elongate-suboval, convex and shining, the elytra very feebly
alutaceous, deep black, excepting the large post-humeral pale macula;
legs obscure rufo-testaceous, the femora infumate distally; head but
slightly narrower than the prothorax, the sulci evidently converg-
ing; antennae longer than the elytra, black, with the basal joint piceo-
testaceous, distinctly heavy distally, more slender basally, the medial

BEMBIDIIN.E 151

joints slightly more than twice as long as wide; prothorax two-fifths
wider than long, the sides evenly and strongly rounding in about
apical, strongly converging and straighter in basal, half, the angles
obtusely subprominent; base half the maximum width, the line of
punctures before the bead feeble; foveae rather small; carina rather
more distinct than usual; elytra slightly more than one-half longer
than wide, two-fifths wider than the prothorax, parallel, with dis-
tinctly arcuate sides and rather rapidly rounded humeri; striae very
fine, not impressed, obsolete in apical two-fifths; punctures fine,
rather close-set, extending barely behind the middle; foveae very
small, near basal fourth and apical third. Length (9) 3.4 mm.;
width 1.2 mm. New Hampshire (summit of Mt. Washington).
[Ochthedromus axillaris \\ Lee. — Lake Superior.], .mutatum G. & H.

Body smaller, narrower, moderately convex, black, polished, the elytra
with the micro-reticulation faint, more evident behind, the post-
humeral pale spot large, extending inward to the middle; under
surface piceous, the legs flavate, infumate at the knees, the tarsi
fuscous; head but just visibly narrower than the prothorax, with
moderate though very prominent eyes; antennae rather thick, black,
rufous beneath basally, not quite as long as the elytra, the medial
joints slightly obconic, not quite twice as long as wide; prothorax
a fourth wider than long, the sides subevenly rounded anteriorly,
very oblique and less arcuate behind to the short sinus delimiting
the prominent and sharp basal angles; base one-half the maximum
width, the foveae small, deep, smooth as usual; elytra nearly three-
fifths longer than wide, about one-half wider than the prothorax,
just visibly inflated posteriorly and slightly wider behind the middle
than at base, the sides feebly arcuate; base oblique and arcuate
from the distinct humeri to the pedicel; striae fine, unimpressed,
obsolete in more than apical third, the punctures minute and rather
widely separated; foveae very small, at basal fourth and apical
third. Length (cf 9 ) 2.65-3.0 mm.; width 0.7-1.0 mm. Colorado
(Boulder Co.), — Mrs. T. L. Casey vegetum n. sp.

12 — Entire elytra alutaceous, the micro-reticulation strong; striae very
fine but traceable almost to the apex. Body oblong, moderately
convex, deep black, the anterior parts polished and more blue-black;
under surface black, the legs wholly obscure rufous; head nearly
four-fifths as wide as the prothorax, with the usual moderately con-
verging sulci; eyes prominent; antennae thick, black, in part rufous
at base, as long as the elytra, the medial joints two-thirds longer
than wide, subcylindric; prothorax one-half wider than long, the
sides very evenly and strongly arcuate to the short posteriorly sub-
divergent basal part at the sharp, right and prominent angles; ante-
rior impression distinct at the middle only, the line before the basal
bead with a regular row of close punctures; base four-sevenths the
total width; elytra parallel, with slightly arcuate sides, barely one-
half longer than wide, only two-fifths wider than the prothorax;
strial punctures very fine, traceable almost to the declivity; foveae
small, near basal fourth and apical third, the anterior close to the

152 MEMOIRS ON THE COLEOPTERA.

third stria. Length (9) 2.9 mm.; width 1. 1 mm. Utah (south-
western),— Weidt. Colorado (Alamosa), — LeConte.

praecinctum Lee.

Entire elytra polished and immaculate, the micro-reticulation always
extremely feeble, generally only traceable near the apex and under
high magnifying power; striae more abbreviated as usual 13

13 — Form rather narrow and convex, polished, deep black; under surface
black, the legs piceous, the tibiae rufous; head four-fifths as wide as
the prothorax, with prominent eyes and moderately converging
sulci; antennae heavy, as long as the elytra, black, rufous beneath
at base, the medial joints obconic, less than twice as long as wide;
prothorax two-fifths wider than long, the sides strongly rounded
anteriorly, very oblique and straighter in about basal half to the
prominent and sharp, nearly right angles; impressions somewhat as
in prcccinctum; base three-fifths the maximum width; elytra more
than one-half longer than wide, barely two-fifths wider than the pro-
thorax, parallel, with arcuate sides; humeri rather broadly rounded,
the base subtransverse thence to the pedicel; striae excessively fine,
unimpressed, gradually obsolete behind the middle, the punctures
well separated and extremely minute; foveae small, slightly before
basal and at apical third. Length (cf) 3.0 mm.; width i.o mm.
New Mexico (Fort Wingate), — Shufeldt tenax n. sp.

Form broader, more oblong, not quite so convex, shining, deep black;
under surface black, the legs uniformly piceous; head as in the pre-
ceding in form and relative size; antennae long, fully as long as the
elytra, slender basally, somewhat incrassate distally, black, the basal
joint rufous beneath; medial joints twice as long as wide; prothorax
two-fifths wider than long, widest near anterior third, the sides
evenly and strongly rounded from apex to the short parallel part at
the sharp right angles; impressions as in prcccinctum; base three-fifths
the maximum width; foveae deep, rounded; elytra parallel, with
feebly arcuate sides, fully one-half longer than wide, scarcely one-
half wider than the prothorax, the base transverse from the broadly
rounded humeri to the pedicel; striae fine, just visibly impressed
suturally, traceable almost to the declivity; punctures very small
and widely separated; foveae rather before basal and behind apical
third. Length (cf) 3.0 mm.; width 1.12 mm. Nevada (Elko),—
Wickham veridicum n. sp.

Form narrower than in the preceding, the elytral striae much more abbre-
viated, black, polished, the elytra in the type with slightly piceous
tinge; legs obscure rufous throughout; head' four-fifths as wide as
the prothorax; antennae heavy, almost as long as the elytra, black-
ish, obscure rufous at base, the medial joints not quite twice as long
as wide; prothorax two-fifths wider than long, formed as in the pre-
ceding, except that the base is nearly two-thirds the maximum
width, the angles sharp, almost right and abruptly prominent; ely-
tra one-half longer than wide, two-fifths wider than the prothorax,
the parallel sides moderately arcuate ; humeri rather rapidly rounded ;
series of rather small separated punctures unimpressed and abbre-
viated in fully apical third; seventh series as strong as the others

BEMBIDIIN^; 153

but only distinct to about the middle; foveas slightly before basal
and behind apical third. Length (cf) 2.8 mm.; width 1.18 mm.
California (Truckee). One example relictum n. sp.

The two species crurale and dubitans of LeConte, are considered
to be synonymous by Mr. Hayward, but my studies do not confirm
this; on separating the two forms into series and comparing them
in this way, it can be observed that crurale is a materially larger
species, relatively narrower, much more elongate and with a larger
prothorax, and that there is but seldon a very small feeble pale spot
behind the humeri, while in dubitans nearly all the specimens have
at least a well defined trace of the spot, which usually is moderately
large and well defined. Although the posterior spot in pugetanum is
usually obsolete and at best very vague, the species can be distin-
guished from either of the more southern LeContean species by its
heavier build and broader elytra, as well as the much larger and
more conspicuous post-humeral spot. In gregale the posterior spot,
though small, is usually evident but sometimes becomes completely
obsolete. I am not positive that the Utah example above described
as prczcinctum Lee., is correctly identified, not having compared it
directly with the type; it is a very distinct species in its dull elytra,
with unusually long and feeble striae. The Elko specimens taken
by Wickham, were evidently confounded with prcecinctum by Mr.
Hayward; they are noted above under the name veridicum. That
author also confounded the Colorado form, probably named vegetum
above, with mutatum, the two are widely distinct however. Jucun-
dum Horn, from Arizona, must be a very isolated species; it is un-
known to me at present.

Group XV — sulcatum
Subgenus Paralopha nov.

In general characters, including habitus, the single species of this
group known to me is allied most closely to the following assimile
group, resembling it in style of ornamentation, having the charac-
teristic small posterior external spot, but the converging frontal
sulci do not unite at the anterior margin of the epistoma as they do
in the assimile group, and have the unique peculiarity, so far as
the American fauna is concerned, of being evenly double through-
out their extent. Dr. Blaisdell places his Bembidion continuum—

154 MEMOIRS ON THE COLEOPTERA

a preoccupied name — in the sulcatum group, but his description
seems to show that the frontal sulci are not truly analogous to those
of sulcatum Lee. The type may be described as follows:

Form moderately stout, rather strongly convex, shining, deep black,
without metallic lustre, the elytra indefinitely paler at apex and each
with an oblique external pale spot between apical third and fourth;
under surface black, the legs dark rufous; head rather small, two-
thirds as wide as the prothorax, with large but only moderately
prominent eyes, the parallel converging ridges at each side strongly
marked; antennae moderately slender and blackish, the basal joint
rufous, nearly four-fifths as long as the elytra, the medial joints
cylindric, slightly more than twice as long as wide; prothorax two-
fifths wider than long, equally wide at base and apex, widest barely
before the middle, where the sides are subprominently rounded,
sinuate and then subparallel basally; transverse impressions dis-
tinct, especially the posterior; foveae moderate, rather deep and sub-
linear, not close to the equally long and distinct carina; hind angles
right; elytra slightly more than one-half longer than wide, almost
one-half wider than the prothorax, gradually obtusely ogival pos-
teriorly, the parallel sides feebly arcuate, the humeri not sharply
rounded; striae moderate, subentire, feebly impressed suturad; punc-
tures moderate, somewhat close, traceable to behind the middle;
foveae before basal and near apical third. Length (cf 9 ) 2.9-3.5
mm.; width 1.15-1.35 mm. New York (Lake Champlain) and
Michigan (Marquette). Many specimens. [Ochthedromus trepidus
Lee.] sulcatum Lee.

This is a peculiarly northern species and seems to be subject to
very little intraspecific variation, even in size. Judging by the
drawing given by Duval, the European Bemb. gilvipes Sturm, which
in the latest catalogue is placed in the quadrimaculatum group pre-
ceding, should be congeneric with sulcatum; the frontal sulci are
perfectly similar as depicted by Duval. Sulcatum, however, is
certainly not a Lopha, nor is it even remotely related to quadri-
maculatum. The subgenus Lopha, because of the peculiar basal
formation of the prothorax, should be one of the first to receive
full generic rank, if any such ratings be made in the future.

I have not seen the type of Ochthedromus trepidus Lee., and follow
the synonymy given by Hayward ; it seems to have been separated
from sulcatus by LeConte, because of the extreme flatness of the
strial intervals. An analogous case is that noted previously in
this paper of Melomalus effetus, in its relationship with flebilis,
which I cannot pretend to settle definitely without more material.

BEMBIDIIN.E 155

V «

Group XVI — assimile
Subgenus Diplocampa Bedel

This group is as well defined and sharply delimited as Lopha, the
peculiarity here being the very convergent and anteriorly connivent
frontal sulci. These sulci do not actually coalesce at the epistomal
apex, but expand theretoward, so that at the extreme apex they are
usually in mutual contact, separated by a gradually acute convex
intermediate surface. Outside each sulcus at apex there is a feeble
oblong fovea, of the same nature as that previously noted under the
guadrimaculatum group, but there is no further analogy between
Diplocampa and Lopha, except in the row of punctures before the
thoracic base and in the general characters of the genus Bembidion.
In the more typical species there is an external posterior reddish
spot on each elytron, as in sulcatum, but a considerable number of
species have no trace of the spot, the elytra being uniform in color-
ation. Our species are rather numerous, those represented in my
collection being determinable as follows:

Elytra alutaceous and micro-reticulate throughout; .body somewhat
stouter than usual 2

Elytra polished, not micro-reticulate 3

2 — Body oblong-suboval, moderately convex, alutaceous, the type black-
ish, the elytra each with a large external spot at apical fourth and
the apex pale, the two connected broadly along the margin; under
surface red-brown, the legs pale; head four-fifths as wide as the pro-
thorax, the sulci deep; antennae slender, pallid, the medial joints
between two and three times as long as wide; prothorax two-fifths
wider than long; base narrower than the truncate apex and nearly
three-fourths the maximum width; sides strongly rounded to the
basal parallel part, which is a fifth or sixth the total length; basal
impression punctate but interrupted medially; foveae smooth, deep,
rounded, next to the short and rather indistinct carina; margins
rather widely and strongly reflexed; elytra barely one- half longer
than wide, nearly two-thirds wider than the prothorax, slightly
wider behind the middle than at base, the sides somewhat arcuate;
humeri rather rapidly rounded; striae moderate, scarcely impressed,
obliterated in apical fourth, the seventh a row of fine punctures,
• not extending to the middle; punctures fine and unusually close-
set, traceable to the declivity; foveae before basal and before apical
third. Length ( 9 ) 3-4 mm. ; width 1.3 mm. California (St. Helena,
Napa Co.) digressum n. sp.

Body stout, convex and ventricose, feebly alutaceous, black, the posterior
maculation as in the preceding; under surface black, the legs piceo-
rufous; head slightly though evidently narrower than the prothorax,

156 MEMOIRS ON THE COLEOPTERA

the sulci very deep; eyes large, moderately prominent; antennae
slender, very nearly as long as the elytra, black, obscure rufous at
base, the medial joints between two and three times as long as wide;
prothorax fully two-fifths wider than long, the apex apparently
even somewhat arcuate, much wider than the base, which has fully
three-fourths the maximum width; sides arcuate, reflexed, rapidly
converging and arcuate behind about the middle to the long and
straight, parallel or even slightly diverging basal part, which is
fully a fifth the total length; at each side of the middle near the base
there is a transversely oval depression; foveae deep, linear, separated
from the carina, which is equally long and distinct; elytra barely
one-half longer than wide, two-thirds wider than the prothorax,
subparallel, with arcuate sides and rather gradually rounded humeri;
striae feebly impressed suturally, abbreviated at apex, much more
considerably toward the sides, the seventh series not extending to the
middle; punctures rather strong and widely spaced in the series,
gradually very fine and obsolete posteriorly; foveae at two and four
sevenths. Length (9) 3-7 mm.; width 1.5 mm. Michigan (Mar-
quette), — Sherman concretum n. sp.

Body much less stout, convex, very feebly alutaceous, black, the elytra
with posterior maculation as in the two preceding but more nubi-
lous; under surface black, the legs bright rufous; head as wide as
the prothorax, the sulci as in concretum, the eyes a little smaller but
more prominent; antennae slender, blackish, more gradually testa-
ceous basally, the medial joints more obconic, slightly more than
twice as long as wide; prothorax not so broad, barely a fourth wider
than long but otherwise as in concretum, the impression at each side
of the middle posteriorly not so marked, the deep elongate foveae
larger and a little longer than the distinct carina; anterior impression
similarly evident though broadly concave medially, the stria fine,
not entire; elytra similar in form, the arcuate sides rather more
rapidly rounding basally, one-half longer than wide, nearly three-
fourths wider than the prothorax; striae rather fine, feebly impressed,
the sutural strongly as usual, obsolete for a greater distance apically
than in concretum, and with the punctures finer and less remotely
separated; foveae similar. Length (9) 3.4-3.5 mm.; width 1.3-
1.35 mm. Rhode Island (Boston Neck) congruens n. sp.

3 — Species very small, much under 3 mm. in length; external frontal
groove longer 4

Species larger, approximating 3 mm. or more in length 5

4 — Form ventricose, rather strongly convex, shining, black, the elytra
picescent, each with a relatively large and conspicuous subexternal
flavate spot near apical fourth and almost isolated from the poste-
rior and apical flavate margin; legs pale flavo-testaceous; head but
very little narrower than the prothorax, the eyes prominent; anterior
fovea external to the sulci much longer than usual, assuming the
form of a second sulcus; antennae as long as the elytra, fuscous, very
gradually testaceous basally, the medial joints barely twice as long
as wide; prothorax relatively small, a fifth wider than long, narrower
at base than at the truncate apex; base three-fourths the maximum

BEMBIDIIN.E 157

width; sides strongly rounded anteriorly, becoming straight and
parallel in basal sixth; foveae deep, elongate-oval, adjoining the mod-
erately distinct carina; punctures of the subbasal row coarse and
distinct; median line generally more deeply impressed before and
behind the middle; elytra distinctly less than one-half longer than
wide, evidently wider behind the middle than at base, fully four-
fifths wider than the prothorax; sides rather strongly arcuate, some-
what rapidly rounding at the humeri; striae coarse but not much
impressed, obsolete in apical third or fourth; punctures coarse, deep,
separated by rather more than their diameters; seventh series
strong, extending to the middle; foveae at two and four sevenths.
Length (cf 9 ) 2.3-2.6 mm.; width 0.7-0.9 mm. Rhode Island to
Illinois, Iowa and Missouri (St. Louis). Abundant. . .frontale Lee.

Form not quite so ventricose, more parallel, nearly as convex, polished,
deep black, the elytra not paler, with the posterior spot smaller,
more marginal, united with the pale margin connecting it with the
pale apex; legs piceo-testaceous; head barely visibly narrower than
the prothorax, throughout nearly as in frontale; antennae slightly
shorter than the elytra, black, gradually pale basally, the medial
joints twice as long as wide; prothorax shorter, two-fifths wider than
long, in general outline and arcuato-truncate apex nearly as in
frontale, but with the anterior impression sharper, deeper and entire
from side to side, the subbasal impression deeper and more sharply
groove-like, strongly punctate, the foveae and carina nearly similar,
but the abbreviated median stria is even throughout and moderately
impressed; elytra more oblong, with more parallel and feebly arcuate
sides, less than one-half longer than wide and only two-thirds wider
than the prothorax; striae not so coarse and continuing to apical
fourth or fifth, the punctures smaller though very distinct, more
close-set; foveae nearly similar. Length (d71 9 ) 2.25-2.5 mm.; width
0.75-1.0 mm. California (Gualala River, Mendocino Co.) and
Nevada (Reno). Four examples siticum n. sp.

Form nearly as in siticum but more elongate, shining, brown in color in
the type, with nearly similar posterior maculation; legs rufous;
head distinctly narrower than the prothorax; antennae fuscous,
gradually testaceous basally, shorter than in either of the two pre-
ceding, scarcely three-fourths as long as the elytra, the medial joints
evidently less than twice as long as wide; prothorax still more trans-
verse, rather more than two-fifths wider than long; base narrower
than the apex and fully three-fourths the maximum width; sides
strongly rounded in anterior, oblique and sinuate in about posterior,
half, becoming parallel in basal fifth; anterior impression shallow
but evident, the posterior shallowly sulciform and punctate; foveae
shallower than in the preceding, the carina moderate, close to the
edge; elytra longer, fully one-half longer than wide, scarcely more
than one-half wider than the prothorax, subparallel, with feebly
arcuate sides, rapidly rounded at the humeri; striae moderate, obso-
lete in apical fourth, barely impressed suturad, the punctures strong,
even, moderately well separated, traceable to about posterior third;

158 MEMOIRS ON THE COLEOPTERA

foveae at two-sevenths and at the middle. Length (9) 2.5 mm.;
width 0.85 mm. California (Booneville, Mendocino Co.).

adolescens n. sp.

5 — Antennae notably thick and heavy. Body suboval and very convex,
deep black and polished; elytra with apex and external spot near api-
cal fourth, broadly joined to the apical area, pale, the pale areas
very nubilous; under surface black, the legs bright rufous; head five-
sixths as wide as the prothorax; sulci deeply impressed, straight, the
external anterior impression short as usual; antennae nearly as long
as the elytra, black, the basal joint obscure rufous, the medial joints
fully twice as long as wide; prothorax very convex, a third wider
than long, the base two-thirds the maximum width and much nar-
rower than the arcuato-truncate apex; sides evenly arcuate, be-
coming subparallel near the base, the angles sharp but more than
right; margins unusually finely reflexed; anterior impression very
feeble, the posterior distinct but obsolete medially; foveae very small,
elongate-oval, deep, the carina wholly wanting; elytra slightly over
one-half longer than wide, three-fifths wider than the prothorax,
parallel, with arcuate sides, gradually rounding at the humeri; striae
rather coarse, feebly impressed, obsolete on the declivity, the punc-
tures strong and relatively coarse, widely to moderately separated;
foveae before basal and near apical third. Length (9) 3.2 mm.;

width 1.2 mm. Michigan (Marquette) umbraticum n. sp.

Antennae slender, the thoracic margins less finely reflexed, the carina at

the hind angles rather long, distinct 6

6 — Prothorax distinctly transverse 7

Prothorax but feebly transverse, never more than a fourth wider than

long II

7 — Head much narrower than the prothorax 8

Head scarcely visibly narrower than the prothorax 9

8 — Body oblong-suboval, only moderately convex, polished, deep black;
elytra with the apices nubilously pale, but without obvious trace
of a posterior external spot; legs very nearly black, slightly piceous;
head three-fourths as wide as the prothorax, the eyes rather prom-
inent; sulci deep, the anterior external depression small, oval; an-
tennae only moderately slender as compared with all the following
species, black, barely less so at base, three-fourths as long as the
elytra, the medial joints scarcely twice as long as wide; prothorax
not quite one-half wider than long; apex rectilinearly truncate, much
wider than the base, the latter fully three-fourths the maximum
width; sides subevenly rounded and well reflexed to the parallel
basal part, which is a sixth the total length; impressions rather sharp
and distinct, subentire, the stria distinct between them; foveae rather
long, very deep, oval, adjoining the distinct carina; elytra slightly
over one-half longer than wide, scarcely more than two-fifths wider
than the prothorax, parallel, with distinctly arcuate sides and mod-
erately rounded humeri; striae fine, impressed only suturad, obsolete
at about apical fourth; punctures fine, moderately separated, less
fine and close-set in the sutural series; foveae near basal fourth and

BEMBIDIIN/E 159

at three-fifths. Length (tf) 3.1-3.25 mm.; width 1.23 mm. Cal-
ifornia (Lake Tahoe) ............................ scenicum n. sp.

Body slightly narrower and more convex, the elytra shorter and more
oval, deep black, shining, the elytra slightly brownish, each with a
subexternal pale spot near apical fourth, the apex and lateral margin
apically also pale; legs obscure rufous; head four-fifths as wide as
the prothorax, the eyes moderate; antennae scarcely three-fourths
as long as the elytra, blackish, the first three joints in great part
testaceous, the medial joints slightly more than twice as long as
wide; prothorax barely two-fifths wider than long; base much nar-
rower than the broad truncate apex and not quite three-fourths the
* maximum width; sides in about apical half parallel and moderately
arcuate, thence very oblique to the subparallel basal part, which is
nearly a fifth the total length; margins well reflexed; anterior im-
pression very feeble, the posterior coarsely sulciform and punctate,
abruptly interrupted at the middle; foveae deep, rather large, elon-
gate-suboval, adjacent to the long strong carina; elytra one-half
longer than wide, three-sevenths wider than the prothorax, gradu-
ally parabolic behind, the subparallel sides feebly arcuate and the
humeri 'moderately rounded; striae coarse but only very slightly
impressed, extending to the declivity internally, to the middle ex-
ternally, the punctures coarse, deep and well separated; foveae near
fourth and three-fifths. Length (9) 2.8-3.4 mm.; width 1.1-1.2
mm. Utah (Provo), — Wickham. Three examples, .clemens n. sp.

9 — Prothorax large, about three-fourths as wide as the elytra. Surface

polished, black, with feeble aeneous lustre, the elytra piceous, each
with a nubilous external spot near apical fourth and the posterior
part of the margin, barely attaining the suture, pale; under surface
black, the legs pale piceo-testaceous; head large, barely visibly nar-
rower than the prothorax, with prominent eyes, the sulci deep;
antennae scarcely three-fourths as long as the elytra, black, piceous
at base, the medial joints- fully twice as long as wide; prothorax
fully two-fifths wider than long, but little wider just before the middle
than at the broad truncate apex ; base four-fifths the maximum width ;
sides moderately reflexed, moderately rounded anteriorly, arcuately
converging posteriorly to the long subparallel basal part, which is
fully a fifth the total length; angles right, as usual; anterior impres-
sion feeble, the posterior also broad, feeble and medially interrupted,
nearly smooth; fovese elongate-oval, deep and somewhat distant
from the rather short but strong carina; elytra oblong, with arcuate
sides and subcircular apex, slightly more than one-half longer than
wide, the humeri somewhat broadly rounded though slightly ex-
posed at base; striae rather coarse but barely at all impressed, obso-
lete in apical fourth inwardly and half externally; punctures moder-
ately coarse and rather well separated; foveae at fourth and four-
sevenths. Length (9) 3.35 mm.; width 1.25 mm. Queen Char-
lotte Islands (Massett), — Keen. One specimen, .peregrinum n. sp.
Prothorax relatively smaller, much less than three-fourths as wide as
the elytra ................................................. 10

10 — Form moderately narrow and convex, deep shining black through-

160 MEMOIRS ON THE COLEOPTERA

out, the elytra each with a very small pale spot near the side at
about apical fourth, the apex nubilously and feebly pale, these pos-
terior pale areas often wholly obsolete; under surface black, the legs
blackish-piceous to dark rufous; head slightly though evidently
narrower than the prothorax, with prominent eyes and deep sulci;
antennae slender, three-fourths as long as the elytra, black, the basal
joint obscure rufous, the medial joints two and one-half times as
long as wide; prothorax two-fifths wider than long; base but slightly
narrower than the truncate apex and nearly four-fifths the maximum
width; sides strongly rounded, arcuately oblique from about the
middle to the rather short subparallel basal part, well reflexed;
anterior impression distinct medially, the posterior broadly sulci-
form, punctate, obsolete at the middle; fovese deep, oval, adjacent
to the moderate carina; elytra oblong, with broadly arcuate sides,
one-half longer than wide, nearly two-thirds wider than the pro-
thorax, the humeri rapidly rounded, transverse internally at base;
striae moderately coarse, slightly impressed internally, obsolete in
apical fourth, the seventh series very fine, not extending to the mid-
dle; punctures strong, well separated; foveae as in peregrinum.
Length (cf 9 ) 2.8-3.35 mm.; width 1.1-1.23 mm. California (Sta.
Cruz to Mendocino). Fifteen examples connivens Lee.

Form stouter, moderately convex, polished, piceous-black, the elytra
castaneous, generally without posterior paler maculation, but rarely
with exceedingly vague traces of maculation like that of the two
preceding; head fully four-fifths as wide as the prothorax, with large
prominent eyes; antennae nearly four-fifths as long as the elytra,
blackish, paler at base, the medial joints more than twice as long
as wide; prothorax distinctly larger than in connivens, but almost
similar in general form and structure, two-fifths wider than long;
elytra broader, nearly one-half longer than wide, barely one-half
wider than the prothorax, parallel, with broadly arcuate sides, the
humeri moderately rounded; apex rather more obtuse than in con-
nivens, the striation and punctures nearly similar. Length (cf 9 )
2.8-3.15 mm.; width 1.15-1.25 mm. California (Mt. Diablo to
Mendocino Co.). Five specimens vapidum n. sp.

Form rather more ventricose, smaller, shining, pale red-brown in color
throughout in the type, the head slightly more dusky; under sur-
face and legs pale red-brown; head only just visibly narrower than
the prothorax, the eyes moderate, prominent; antennae almost simi-
lar, dusky, broadly testaceous basally; prothorax relatively smaller,
a third wider than long; base distinctly narrower than the apex as
in vapidum; sides strongly rounded from apex to the basal parallel
part, which is nearly a fifth the total length; anterior impression
subobsolete, the posterior a shallow entire punctured sulcus, arcuate
in the middle but scarcely interrupted; foveae deep, elongate, near
the distinct carina; elytra relatively large, fully one-half longer than
wide, two-thirds wider than the prothorax; sides parallel, moderately
arcuate, the humeri as in vapidum, the striae moderate, not impressed,
except feebly suturad, obsolete only near the apex internally, more
abbreviated laterally as usual, the seventh series extending to about

BEMBIDIIN^: 161

the middle; punctures strong, widely separated in some series, closer
in others; fovese near basal fourth and apical third. Length (cf )
2.S mm.; width 1.15 mm. California (Sta. Barbara), — Dunn. The

type is probably immature to some extent disparile n. sp.

1 1 — Elytra without paler posterior maculation 12

Elytra with distinct posterior maculation 13

12 — Body rather narrow and convex, feebly ventricose, polished, deep
black throughout, the legs obscure rufous; head unusually developed,
fully as wide as the prothorax, the eyes moderate in size but very
prominent, the strongly converging sulci deep; antennae three-fourths
as long as the elytra, black throughout, thicker distally than basally,
the medial joints obconic and distinctly less than twice as long as
wide; palpi blackish; prothorax barely visibly wider than long, the
base distinctly narrower than the truncate apex and three-fourths
the maximum width; sides moderately rounded anteriorly, oblique
in rather more than basal half, gradually sinuate basally, the angles
right; anterior impression only medial and feeble, the posterior
sulciform, entire, punctate; foveas deep, elongate-oval, adjacent to
the distinct carina; elytra one-half longer than wide, fully three-
fifths wider than the prothorax, parallel, with arcuate sides and
rapidly rounded humeri; striae coarse but not impressed, except
feebly suturad, obsolete in posterior fourth internally, to half ex-
ternally; punctures coarse, deep and well separated; foveae strong,
at fourth and four-sevenths. Length (cT) 2.7 mm.; width i.o mm,
California (Gilroy Hot Springs, Sta. Clara Co.). A single example.
Resembles vile in general form and facies, differing greatly of course
in the frontal sulci, which are parallel in vile, as noted from an in-
spection of the type ampliceps n. sp.

Body much stouter, strongly convex, polished, deep black throughout,
the legs piceo-rufous; head but slightly though evidently narrower
than the prothorax, the eyes larger than in ampliceps but less prom-
inent; sulci very deep, the intermediate surface strongly convex;
antennae filiform, blackish, obscurely rufous at base, fully three-
fourths as long as the elytra, the medial joints between two and three
times as long as wide; prothorax scarcely a fifth wider than long;
base narrower than the truncate apex though four-fifths the maxi-
mum width, widest near apical third, the sides moderately reflexed,
evenly rounded, gradually converging behind and broadly sinuate,
becoming gradually parallel in about basal sixth; anterior impression
only medial but distinct, obtusely impressed, the posterior shallow,
punctured laterally, obsolescent medially; median stria distinct,
subentire; foveae deep, oval, adjacent to the carina, which is well
developed though close to the edge; elytra one-half longer than wide,
fully three-fifths wider than the prothorax, parallel, with arcuate
sides and very gradually rounded humeri, becoming transverse for
only a very short distance near the thoracic base; striae rather fine,
not impressed, except feebly toward the suture, obsolete at a slight
distance behind the middle; seventh series only visible in basal
third; punctures fine, well separated; foveae small, at fourth and
T. L. Casey, Mem. Col. VIII, Oct. 1918.

162 MEMOIRS ON THE COLEOPTERA

four-sevenths. Length (cf) 3.25 mm.; width 1.25 mm. California
(Lake Tahoe) tersum n. sp.

13 — Elytral striae distinct and distinctly punctured to the summit of
the declivity. Body moderately slender, convex and ventricose,
polished black, the elytra with feeble piceous tinge and with the
apex and a large external posterior spot pale, the two united along
the margin; under surface black, the epipleura piceo-rufous, the legs
rufous; head five-sixths as wide as the prothorax, of the usual struc-
ture; antennae three-fourths as long as the elytra, fuscous, gradually
rufous basally, the medial joints slightly more than twice as long as
wide; prothorax a fifth or sixth wider than long; base distinctly nar-
rower than the truncate apex and fully three-fourths the maximum
width; sides rounded anteriorly, well reflexed, converging and be-
coming sinuate posteriorly, subparallel for some distance from the
angles, which are sharp, slightly more than right; anterior impression
subobsolete, the posterior broad, punctulate, obsolete medially, the
stria fine, not quite entire; foveae rather large, deep, oblong, adjacent
to the carina, which is long and strong; elytra parallel, with arcuate
sides and rather rapidly rounded humeri, one-half longer than wide
and two-thirds wider than the prothorax; striae rather coarse, barely
visibly impressed, obsolete in apical fourth, the seventh in half;
punctures rather coarse, deep, moderately separated, distinct to
the ends of the striae; foveae near fourth and two-thirds. Length
(cf) 3.1 mm.; width 1.18 mm. New Mexico (road between Fort
Wingate and Jemez Springs), — \Yoodgate invidiosum n. sp.

Elytral striae barely at all traceable behind the middle 14

14 — Form moderately slender, convex, deep black, shining, the elytra
with subnubilous posterior pale maculation as in the preceding;
legs piceo-rufous; head not distinctly narrower than the prothorax,
with rather large and prominent eyes and the usual deep sulci, the
inter-sulcal surface obtuse at tip, however, and not so acute as in
some other species; antennae three-fourths as long as the elytra,
more slender, black, the basal joint rufous, the medial joints two
and one-half times as long as wide; prothorax a fifth or sixth wider
than long; base distinctly narrower than the truncate apex and three-
fourths the maximum width; sides rather narrowly but strongly
reflexed, evenly rounded from apex to the parallel basal part, which
is a fifth the total length; anterior impression only medial, broadly
concave, the posterior reduced to a small impression at each side of
the middle; foveae deep, narrow, sublinear, not adjacent to the car-
ina, which is distinct; elytra three-fifths longer than wide, fully
two-thirds wider than the prothorax, parallel, with slightly arcuate
sides and somewhat gradually rounded humeri; striae fine, scarcely
impressed, consisting simply of series of fine and widely separated
punctures, sometimes a little coarser basally behind the humeri;
foveae near two and four sevenths. Length (cf) 3.25 mm.; width
1.25 mm. Illinois (Highland Park) and Michigan (Marquette).

habile n. sp.

Form rather more ventricose, convex, the hind body shorter, polished,
piceous, the elytra black, each with a small but well defined lateral

BEMBIDIIN.E 163

pale spot, remote from the margin, at apical fourth, the lateral mar-
gin pale from behind the middle nearly but scarcely to the suture;
head five-sixths as wide as the prothorax, with moderate eyes, the
inter-sulcal apex rather acute; antennae fusco-testaceous, clearer
basally, three-fourths as long as the elytra, the medial joints slightly
more than twice as long as wide; prothorax barely a fifth wider
than long; base much narrower than the truncate apex and barely
three-fourths the maximum width, the sides moderately reflexed,
strongly rounded anteriorly, gradually converging and less arcuate
posteriorly to the rather abruptly defined parallel or subdiverging
basal part, which is a fifth the total length; angles right; anterior
impression obsolete, the posterior a punctured entire sulcus, the sur-
face between which and the base is somewhat convex; foveae rather
small, deep, rounded, adjacent to the moderate carina; elytra scarcely
one-half longer than wide, subparallel, with arcuate sides and rather
rapidly rounded, broadly basally exposed humeri, two-thirds wider
than the prothorax, convex; striae not coarse, feebly impressed
suturad, obsolete in apical third inwardly to three-fifths externally;
punctures small but deep and distinct, very widely separated in
the series; foveae at fourth and four-sevenths. Length (cf) 3.2 mm.;
width 1.25 mm. California (Paraiso Hot Springs, Monterey Co.).

remotum n. sp.

On examining the careful description of the European Bemb.
assimile Gyll, given by Duval (Rev., 1851, p. 168), I find so decided
a discordance with ourfrontale Lee., now in our lists under the name
assimile, as to excite wonderment at the change of name ; the elytra
in assimile are of obscure bluish or greenish lustre, with the usual
posterior maculation; they are coarsely striate and coarsely punc-
tured, and the fact that they sometimes exhibit evidences of vague
anterior maculation, shows that there is an essential difference, but
the most important difference is in the dimensions of the body;
frontale is one of the most minute species of the genus, while the
length of assimile is 3.2-3.5 mm., indicating materially greater
size. The Pacific coast forms said to be frontale by Mr. Hayward,
are altogether different specifically, and that author included a very
confusing mixture of distinct species under his conception of angu-
liferum Lee., founded originally upon a unique taken near San
Francisco, to which region the species is unquestionably confined.
I have nothing approaching it very closely; it is of rather large size
for this subgenus — 3.75 mm., if the published measurement of Le-
Conte is to be relied upon.

The species described above under the name scenicum, is probably
allied rather closely to acutifrons Lee., described as from Alamosa,

164 MEMOIRS ON THE COLEOPTERA

Colorado, and 3 mm. in length, judging at least by the blackish-
piceous legs, said to be black in acutifrons, but the prothorax in
scenicum is probably much more transverse. In cautum Lee., of
the Rocky Mountains, the prothorax is said to be no wider than the
head, the legs pale and the elytra deeply striato-punctate; it is
probably related remotely to tersum, from Lake Tahoe, the latter
differing very much in the feeble unimpressed striation and in its
darker legs. Umbraticum is remarkable in having no trace of the
very constant carina of the hind thoracic angles.

Amerizus Chd.

There can be but little question that this is a valid genus and not
a mere group of Bembidion; this is rather conclusively proved by
the subanchylosed external maxillary lobe. In the facies of the spe-
cies it truly approaches the trechiforme group of Bembidion, but
this resemblance, I am convinced, is largely superficial, as is its
still stronger similitude with some forms of Trechtis, but, as if to
accentuate the possible afcnity with Trechus, the last joint of the
labial palpi is often elongated to a degree probably unknown in
Bembidion; in most of the species it is in fact fully half as long as
the penultimate joint and sometimes longer. It is to be admitted,
however, that in the greater part of its organization it is very closely
allied to Bembidion, having the same male tarsal characters, and
relationships of the sclerites of the under surface, but it differs
greatly in the small and but slightly prominent eyes, with corres-
pondingly greater space separating the eyes from the broad, shallow
and parallel frontal sulci. The mentum tooth is well developed
and sharply triangular. The elytral fovese are on the third inter-
val. The species are moderately numerous, and those before me
may be defined as follows :

Sides of the pronotum steeply sloping, the edge very finely reflexed.
Body subparallel, moderately convex, piceous-black, rather shining,
the head feebly micro-reticulate, the pronotum and elytra with very
fine and close-set wavy strigilation, visible only under rather strong
magnification; under surface of the hind body and the legs rufous;
head orbicular, somewhat longer than wide, three-fourths as wide
as the prothorax; antennae very thick, filiform, clear testaceous
throughout, three-fourths as long as the elytra, the medial joints
twice as long as wide, cylindric; prothorax between a third and fourth
wider than long, widest near anterior third; base slightly wider

BEMBIDIESLE 165

than the broadly sinuate apex and four-fifths the maximum width;
sides evenly rounded from the rather sharp apical angles to the par-
allel basal part, which is nearly a fourth the total length; anterior
impression obsolete; base depressed and punctate throughout; stria
deeply impressed, subentire; foveae large, broadly impressed, shallow
and punctate, the carina rather long and strong; angles right; ely-
tra slightly opalescent, more than three-fifths longer than wide, a
third wider than the prothorax, parallel, with arcuate sides and very
gradually rounded humeri; striae fine, feebly impressed, entire, with
more or less evident traces of fine and very irregular punctulation;
foveae before basal and before apical third, separated by fully two-
fifths the total length. Length (of1) 4.3 mm., width 1.6 mm.
British Columbia (Inverness), — Keen crassicornis n. sp.

Sides of the pronotum less steeply sloping, the edge rather widely and
strongly reflexed; minute sculpture as in the preceding, feeblest in
keeni; antennae not so thick; elytral foveae differing conspicuously
in being very much more approximate, separated by a fifth to sev-
enth the total length 2

2 — Larger species, the legs obscure rufous, with blackish femora. Upper
surface piceous-black, moderately shining; under surface piceous;
head orbicular, rather wider than long, three-fourths as wide as the
prothorax; antennae fusco-testaceous, filiform, rather thick, three-
fourths as long as the elytra, hairy as usual, the medial joints be-
tween two and three times as long as wide; prothorax about two-
fifths wider than long; base transversely truncate as usual, rather
wider than the transverse bisinuate apex, four-fifths the maximum
width, widest at two-fifths from the apex; sides evenly rounded from
apex to the broad basal sinuation, becoming parallel near the angles;
anterior impression very feeble; base with scattered punctures, but
feebly depressed medially; foveae veryv large and broad, deeply con-
cave, the carina distinct, forming one side of the fovea as usual;
median stria coarse and deeply impressed, very coarse and deep
basally; elytra broad, with parallel and strongly arcuate sides, one-
half longer than 'wide, about one-half wider than the prothorax;
striae entire, though becoming very feeble at tip, moderately fine,
impressed, the irregular punctulation barely evident; foveae asper-
ate, at three and four sevenths. Length (9 ) 6.3 mm.; width 2.65
mm. British Columbia (Inverness), — Keen. [Trechus spec. Mann.].

spectabilis Mann.

Smaller species and more slender, the legs rufous throughout 3

3 — Sides of the prothorax distinctly sinuate basally, becoming parallel
in about basal fifth, the hind angles right and very sharp. Body
elongate-suboval, convex, moderately shining, piceous-black, the
under surface obscure, the legs bright, rufous; head orbicular, as
wide as long, fully three-fourths as wide as the prothorax, the sulci
broad as usual; antennae long, pale testaceous, nearly as long as
the elytra, the medial joints slightly obconic and almost three times
.as long as wide; prothorax scarcely a fourth wider than long, barely
visibly wider at base than at apex, the latter rather deeply sinuate,
with well marked angles; sides rather widely and strongly reflexed,

166 MEMOIRS ON THE COLEOPTERA

broadly, evenly arcuate from apex to the parallel basal part; anterior
impression obsolete, the posterior broad and shallow but entire,
with scattered punctures; stria subentire, broadly and deeply im-
pressed, especially toward base: fovese broadly and moderately im-
pressed, elongate and well separated from the distinct carina, though
the general concavity extends to the latter; elytra three-fifths longer
than wide and one-half wider than the prothorax, the parallel sides
arcuate, gradually rounding at the humeri; strise entire, deeply im-
pressed throughout and impunctate, feebly and irregularly so lat-
erad; side margins well reflexed; foveae simple, very small, before
basal third and at three-fifths. Length (cf) 5.5 mm.; width 2.2

mm. California (Sta. Cruz Mts.) longicornis n. sp.

Sides of the prothorax broadly and very feebly sinuate posteriorly, not
becoming parallel, the angles obtuse but not rounded. Body nar-
rower, with relatively larger prothorax, less ventricose, piceous-
black to rufo-piceous, rather shining; under surface and legs rufous;
head three-fourths to four-fifths as wide as the prothorax, the an-
tennae testaceous, the medial joints two and one-half times as long
as wide; prothorax a third wider than long, the deeply sinuate apex
usually not as wide as the base; sides well reflexed, broadly and rather
strongly arcuate, converging in about half; base with a few scattered
punctures; anterior impression obsolete, the posterior obsolete medi-
ally, the subentire stria rather fine, but becoming broadly and deeply
impressed basally; fovese large, broadly and deeply impressed, the
deeper part somewhat distant from the distinct carina; elytra oval,
three-fifths longer than wide, three-sevenths wider than the pro-
thorax, the sides arcuate, gradually rounding basally, the humeri
moderately exposed at base; strise entire, rather fine, feebly or very
moderately impressed, especially externally, where there is some
feeble sparse irregular strial punctulation; foveae near three and four
sevenths, sometimes slightly less approximate. Length (cf ) 4.5-
4.7 mm.; width 1.7-1.75 mm. British Columbia (Metlakatla),—
Keen. Two specimens keeni n. sp.

The species described by Mannerheim under the name Trechus
oblonguhis is, because of the extremely finely margined prothorax,
evidently allied to crassicornis of the above table, but differs in its
rufo-testaceous color and by the thoracic base being somewhat nar-
rower than the apex; the elytra, also, are described as deeply
punctato-striate, which would not suit crassicornis at all; it is 4
by 1.7 mm. in dimensions and occurs in the Island of Sitka. Mr.
Hayward makes the name apply to various forms found in Canada,
the White Mts., Massachusetts, Ohio and even Mexico, including
the species described by Bland as Bemb. wingatei. The latter is
piceous, the head dark rufous, smooth and shining, the antennae
hairy, rufo-fulvous and more than half as long as the body; pro-

BEMBIDIIN/E 167

thorax subcordate, blackish, very smooth and shining, the anterior
and posterior margins dark rufous, the stria well impressed, the
base with a few scattered punctures; foveae deep and rounded, the
hind angles rather prominent; elytra oblong, shining, piceous,
tinged with rufous at base and apex, the surface flattened, the foveae
"on the third stria," one before the middle, the other at posterior
third; striae "neatly" punctured, well impressed at base, becoming
obsolete at tip, the intervals slightly convex; the under surface is
dark brown, shining, the abdominal segments reddish-brown, paler
toward apex; legs rufo-fulvous. The length is 5 mm., and the type
was taken at Bellefonte, Centre Co., Pennsylvania. The punc-
tured elytral striae would seem to suit oblongulus, but it differs in
color and in its materially larger size. The flattened elytra and
punctured striae will not fit crassicornis in anyway. There can be
but little doubt that wingatei is a valid species, and possibly of
this genus, though the elytral striae and position of the foveae as de-
scribed, are not conformable, but of this I could form no opinion
in the absence of typical specimens. I have seen no examples of
true Amerizus taken anywhere except near the Pacific coast-line.

Anillus Duval

The members of this genus are all very small, rather slender and
subdepressed to convex, pallid in color and completely devoid of
eyes ; they inhabit caves or other dark retreats and are not common
in collections.

Those species of Anillus actually known to me by material at
hand are assignable to three very distinctly characterized subgenera
as follows :

Second ventral segment shorter than the next two combined, separated
laterally from the first — which extends entirely across the abdom-
inal base — by an anchylosed suture; mental sinus small, deep, the
tooth triangular; mandibles short, regular, arcuate; sides of the head
margined above as usual; antennae short, the joints abbreviated,
the second nearly as long as the next two combined; elytra not ex-
planate at the sides, the lateral margin broadly and feebly serrate
basally. [Type A. carolince nov.] Atlantic regions of North Amer-
ica Anillinus n. subgen.

Second ventral segment very large, occupying half the abdomen, the first
only visible at the sides; mental sinus broad and shallow, the tooth
small, acicularly prolonged at apex; antennae longer, the joints
elongate-oval, the second somewhat longer than the third and asym-

1 68 MEMOIRS ON THE COLEOPTERA

metrically though feebly inflated; lateral margins of the elytra more
distinctly serrate basally 2

2 — Mandibles broad, their outer margin strongly angulate; elytra not
explanate at the sides. [Type A. ccecns Duv.] Europe.

*Anillus Duval

Mandibles long, thin and nearly straight, their outer margin feebly and
evenly arcuate; elytra explanate at the sides. [Type A. explanatus
Horn]. Pacific coast of North America Anillaspis n. subgen.

The typical species of the first of these subgenera may be de-
scribed as follows :

Anillinus carolinae n. sp. — Narrow, elongate-suboval, strongly convex,
shining, pale testaceous throughout; head three-fourths as wide as the
prothorax, polished, as long as wide, the impressions short and anterior;
antennae about as long as the head and prothorax, the latter not quite
a third wider than long, widest at anterior third, the sides rounded,
straighter and feebly crenulate basally; apex sinuato-truncate, barely
visibly wider than the base; subbasal impression deep, broadly angulate;
median line distinctly impressed, obsolete at apex; elytra nearly three-
fifths longer than wide, a third wider than the prothorax, elongate-oval,
very coarsely reticulate, the first stria distinct, the second feeble and dis-
integrated; sides with a medially interrupted series of widely separated
ocellate fovese. Length 1.6 mm.; width 0.48 mm. North Carolina
(Black Mts.), — Wm. Beutenmiiller. Four specimens.

It is possible that/07^5 Horn, from almost this identical locality,
may be allied rather closely to Carolina, but the base and apex of
the prothorax in the latter are subequal in width as in dohrni
Ehlers, from Florida. It is difficult, besides, to understand how
any such name as fortis could be applied to the very minute Caro-
lina. The head in fortis is said to be alutaceous and to have a
longitudinal impression at each side; the length is given as 2 mm.
My single specimen of explanatus Horn, was taken in Placer Co.,
California.

Lymneops n. gen.

This singular genus combines some of the characters of the typi-
cal Bembidiids and the Tachys group following, and especially in
the absence of the scutellar stria, so uniformly present in all the
preceding genera, but wanting in Tachys and all related groups.
The outer maxillary lobe is of peculiar structure, the segments are
not anchylosed, but the penultimate is arcuate, pedunculate basally
and swollen apically; the longer following segment is attached ob-
liquely, so as to form an angle but slightly greater than right, and

BEMBIDIINvE 169

it is slightly bent. The mentum tooth is well developed and rather
strongly triangular. The eyes are small and but very feebly con-
vex, the sulci broad, shallow, parallel and remote from the eyes and
the posterior thoracic angles are without trace of carina ; the elytral
striae, apparently only five in number, are somewhat irregularly
and broadly, feebly impressed. The gutter at the sides of the ely-
tra has a series of small tuberculiferous setigerous punctures pos-
teriorly and three or four toward base. The dorsal foveae are
broadly impressed, the posterior on the third stria and the anterior
between the third and fourth striae, as in true Tachys. The legs,
antennae and palpi are normally Bembidiid, but the penultimate
joint of the labial is short and very thick. The following is the
only species at present in my collection; it may be regarded as
the generic type:

Lymneops angusticeps n. sp.- — Rather narrow, elongate and depressed,
alutaceous and micro-reticulate throughout, pale red-brown, each ely-
tron with a large elongate discal fuscous cloud, wholly undefined; legs
and under surface ferruginous; head much narrower than the prothorax,
rather longer than wide; antennae thick and heavy though filiform, as
long as the elytra, ferruginous, the medial joints not quite twice as long
as wide; prothorax a third wider than long, the feebly sinuate apex much
wider than the base and barely visibly narrower than the maximum
width at anterior two-fifths; base three-fifths the maximum; sides well
reflexed, parallel and slightly arcuate anteriorly, oblique in about pos-
terior half, sinuate basally, becoming subparallel in basal fifth or sixth;
surface but feebly convex; anterior impression subentire, feeble, the pos-
terior broad and very shallow; stria rather strong, biabbreviated; foveae
small, shallow, distant from the angles, which are right and sharp; elytra
parallel, oblong-oval, one-half longer than wide, a third wider than the
prothorax, the sides broadly arcuate, somewhat widely reflexed, very
gradually rounding at the humeri; foveae rather strong, near basal and
apical third. Length (cf ) 2.8-3.0 mm.; width 0.85-1.1 mm. California
(San Pedro).

The anterior tarsi in both male examples at hand are peculiarly
broad, with the joints decreasing regularly in width and transverse,
the first joint quadrate; in the- female the first joint is probably
longer and more slender.

The species described by LeConte (Pr. Acad. Phila., 1858, p. 61)
under the name Lymnceum laticeps, evidently belongs to this genus,
resembling angusticeps in general features, but is somewhat larger,
3.5 mm. in length, piceous in color above, and has the prothorax
not at all wider than the head; the fifth stria is long, deep and ob-

170 MEMOIRS ox THE COLEOPTERA

lique at apex in both ; laticeps was described from a single specimen
taken at San Diego.

Pericompsus Lee.

While evidently belonging to the Tachys series in general fea-
tures of structure, this genus is so distinct in habitus, system of
sculpture and in many other minor directions, that its inclusion
with normal Tachys by Mr. Hayward as a simple group, is rather
inexplicable. The genus extends geographically from the colder
parts of North America far into South America, and will probably
prove to be moderately large; a number have been described by
Bates from the southern faunas. It does not occur in the true
Pacific coast fauna, though represented in the neighboring Sonoran
regions. There are three well defined subgeneric groups as follows:

Head obliquely prolonged behind the eyes, the latter setose; antennae
long, the second joint scarcely as long as the third; anterior thoracic
angles acute and anteriorly prominent; elytra explanate at the sides.

I (sellatus)

Head abruptly constricted behind the eyes, which are nude, or nearly so;
antennae shorter; anterior thoracic angles not prominent; elytra not
explanate at the sides 2

2 — Elytra oval, gradually narrowly rounded behind; prothorax narrow;
second antennal joint long, equal in length to the third.

II (ephippiatus)

Elytra longer, parallel, obtuse at apex; prothorax transverse; second
antennal joint a little shorter than the third, but subequal in length
to the first; eyes with some exceedingly minute setae; elytra micro-
reticulate Ill (Icetulus)

The first of these groups is purely Sonoran, the second widely
distributed from the northern Atlantic regions to South America,
and the third is represented by several species from Arizona to
southern Mexico.

Group I — sellatus
Subgenus Pericompsus in sp.

The remarkably distinct habitus, opaque lustre, strong sculpture,
posteriorly prolonged head, thoracic structure, long antennae and
widely deplanate sides of the elytra, seemed at first sufficient
ground for full generic separation from the other two groups, but
there are certain characters common to all the groups, such as the

BEMBIDIESLE 171

conspicuous mental foramina and the six entire punctate elytral
striae, that may be deemed sufficient to hold them together gener-
ically. We have but a single species of this subgenus as follows:

Body elongate, ventricose, ferruginous, subopaque, the elytra each with
a fine darker irregular oblique discal line meeting the suture poster-
iorly, and behind which the surface is more flavate: head distinctly
narrower than the prothorax, somewhat elongate, the eyes moder-
ate, convex; sulci narrow, parallel, remote from the eyes, the orbital
puncture minute and distant from the eye; antennae fully as long as
the elytra, ferruginous, slender basally, incrassate distally, the fifth
joint nearly three times as long as wide, the tenth but slightly elon-
gate; prothorax fully as long as wide; base arcuate, four-sevenths
the maximum width, much narrower than the broadly sinuate apex;
sides broadly reflexed, strongly arcuate anteriorly, oblique from be-
fore the middle, sinuate basally, somewhat diverging at the subprom-
inent angles; surface convex along the middle, rugulose, the anterior
impression shallow, medial and foveiform, the posterior obsolete,
represented by a row of punctures; foveae rather large and deep,
elongate-oval; stria fine, subentire; carinae wanting; elytra one-half
longer than wide, four-fifths wider than the prothorax, oval, gradu-
ally acutely ogival behind, the humeri obtusely rounded, the striae
coarse, deeply impressed and approximate, the punctures not coarse
but strong and close-set in the sulci, the seventh wholly wanting;
eighth with the widely separated foveae very coarse, deep and con-
spicuous; at the junction of the third and fifth striae there is a sunken
tuberculiform setigerous puncture, from which to the apical margin
there is a slender carinate channel; dorsal foveae very small, on the
third interval at fourth and half. Length (d71 9 ) 2.7-3.2 mm.;
width i .0-1.2 mm. California (Yuma Reservation); also on the
Arizona bank of the Colorado River opposite sellatus Lee.

I found this species in abundance in hoof-prints in the sand of
the river bank, under fallen leaves. In the male the anterior tarsi
are short, the basal joint short, though not evidently dilated; in
the female the tarsus, and especially its basal joint, is distinctly
longer than in the male. These tarsal characters are probably
analogous to those of Lymneops.

Group II — ephippiatus
Subgenus Tachysops nov.

The habitus of the body in this subgenus is notably different
from that of the preceding group, in being more oval, convex, pol-
ished, with evenly convex prothorax, the anterior angles of which
are not prominent, in the less posteriorly prolonged head and other

172 MEMOIRS ON THE COLEOPTERA

features. The hind thoracic angles are not carinate. There are
two species at hand as follows :

Body suboval, rather strongly, evenly convex, polished, not at all retic-
ulate, flavo-testaceous, the elytra having a common large central
black spot, the suture thence to the tip also often narrowly dusky;
head fully three-fourths as wide as the prothorax, the eyes large,
rather prominent, the sulci broadly impressed, not far from the eyes,
the larger orbital puncture moderate; antennae rather slender, but
feebly incrassate distally, scarcely two-thirds as long as the elytra,
the medial joints more than twice as long as wide; prothorax about
a sixth wider than long; base slightly narrower than the subtruncate
apex and four-fifths the maximum width; sides narrowly and slightly
reflexed, broadly rounded in anterior, oblique in posterior, half sin-
unate posteriorly, becoming parallel at base; angles right, not cari-
nate; anterior impression obsolete, the posterior an entire impressed
series of punctures; foveae small, feeble; stria very fine, incomplete;
elytra one-half longer than wide, fully three-fourths wider than the
prothorax, oblong-oval, gradually pointed or ogival behind; sides
arcuate, the humeri rather rapidly rounded; striae entire, rather fine,
feebly and subequally impressed, finely and somewhat closely punc-
tate, the seventh wanting; fifth stria with a short apical groove;
foveae very small, axial on the third interval near two and four
sevenths. Length (cf 9 ) 2.3-2.7 mm.; width 0.8-1.0 mm. Indiana
to Louisiana. [T. elegantnhts Laf.] ephippiatus Say

Body slightly shorter and more ventricose, strongly convex, highly pol-
ished, pale testaceous in color, each elytron with an oblong central
black spot, behind which there is a large rounded flavate area, these
two flavate spots separated by a blackish sutural area, which is
finely and obliquely connected with the central black areas; head
with well developed eyes, five-sixths as wide as the prothorax; an-
tennae testaceous, scarcely two-thirds as long as the elytra, slender
basally, incrassate distally, the medial joints less than twice as long
as wide; prothorax about as long as wide, the truncate apex slightly
wider than the base, which is four-fifths the maximum width; sides
moderately rounded anteriorly, broadly, feebly sinuate toward the
sharp right basal angles; anterior impression obsolete, the posterior
a shallow punctate sulcus before the basal bead, the foveae small and
feeble; margins very finely reflexed, the surface sloping more steeply
at the sides than in the preceding; elytra one-half longer than wide,
fully four-fifths wider than the prothorax, gradually acutely ogival
in about apical half, the humeri rapidly rounding; striae coarse,
feebly impressed suturad, obsolete in apical third; punctures coarse,
widely separated in the series, the seventh wholly obsolete: foveae
very small, before basal third and well behind the middle. Length
(cf 9 ) 2.1-2.2 mm.; width 0.8 mm. Mexico (Frontera, in Tabasco),
-Townsend. Three examples *oculaticauda n. sp.

The species described as oculaticauda differs distinctly from any
Mexican species mentioned by Bates. Pericompsus histrionellus

BEMBIDIINVE 173

Bates, from Panama, also belongs to this subgenus and probably
some others of the decribed species.

Group III — IcBtulus
Subgenus Tachysalia nov.

The form of the body in this subgenus is quite different from that
observable in either of the two preceding, the elytra being long and
parallel and the prothorax transverse; the elytra have the micro-
reticulation characterizing sellatits, but the anterior parts are only
obsoletely reticulate and, in the Mexican longuhis of Bates, even the
elytral reticulation becomes feeble. The prothorax differs also
from that of the preceding, in having a distinct though short carina
at the basal angles, as in most of the genus Bembidion. In general
facies Tachysalia reminds us of some minute Bradycellids. As in
the two preceding, sexual modifications of the anterior tarsi are
slight. The type may be described as follows:

Form elongate, parallel, moderately convex, shining, the elytra feebly
alutaceous, testaceous in color, the elytra with a large dusky oblong
common cloud, tending to expand only slightly behind; head fully
three-fourths as wide as the prothorax, with well developed and prom-
inent eyes, the sulci moderate, the larger orbital puncture feeble;
antennae notably short, barely longer than the head and prothorax,
gradually incrassate distally, the medial joints one-half longer than
wide; prothorax two-fifths wider than long, widest at apical third;
base slightly narrower than the subtruncate apex and more than
four-fifths the maximum width; sides narrowly explanato-reflexed,
moderately rounded anteriorly, oblique in more than basal half,
becoming broadly sinuate basally, the angles right; anterior, impres-
sion nearly obsolete, the posterior an entire punctate shallow sulcus,
before the broad feeble basal bead, the foveae rounded, moderately
deep; elytra two-thirds longer than wide, two-fifths wider than the
prothorax, almost twice as long as the head and prothorax, parallel,
with almost straight sides and obtusely rounded apex, the humeri
circularly rounded to the thoracic base; marginal gutter deep, with
moderate foveae; striae fine, entire, the intervals nearly flat; punctures
very fine, shallow and close-set; foveae at one-fourth and three-fifths.
Length (d" 9 ) 2.6-2.65 nim.; width 0.83 mm. Arizona (near Ben-
son),— Dunn laetulus Lee.

The Mexican longulus Bates, resembles Icetulus very closely in
outline, but the disk of the pronotum, sometimes narrowly divided,
is black, and the oblong black elytral spot is dilated posteriorly to
the marginal gutter; the strial punctures are less fine and not so
close-set.

174 MEMOIRS ON THE COLEOPTERA

Paratachys n. gen.

The few known species of this genus resemble Tachys much more
closely than Pericompsus, being depressed, with similar integument,
similar position of the dorsal foveae of the elytra on the fourth in-
terval, almost punctureless elytral striae, and with the mental for-
amina not much larger than in Tachys, but they differ from the
latter in the parallel form of the body and entire eighth elytral
stria, and not only from that genus but Pericompsus also, in having
seven discal striae, very fine and feeble it is true, but easily observ-
able by properly reflected light. The two species before me, of
which the first should be regarded as the type, may be described
as follows:

Form subparallel, rather shining, pale brownish-flavate throughout, the
head in part slightly dusky; head fully three-fourths as wide as the
prothorax, with moderate and rather prominent eyes, short, anterior
and widely separated sulci and rather approximate superciliary
punctures; antennae pale flavate, heavy, two-thirds as long as the
elytra, the medial joints less than twice as long as wide, the second
much longer than the third; prothorax four-fifths wider than long,
equally wide at base and apex, the sides narrowly reflexed, more so
at base, broadly rounded anteriorly, oblique in about basal half,
becoming sinuate, parallel for some distance before the sharp right
angles, the base transverse; subbasal impression obtusely subangu-
late, rather deep, the stria distinct, extending almost to the apex;
elytra nearly three-fifths longer than wide, barely a third wider than
the prothorax, circularly rounded in apical third, the sides parallel
and nearly straight; humeri sharply rounded; striae fine but distinct
internally, very feeble on the flanks, very obscurely micro-punctulate;
anterior fovea rather deep, near basal third. Length 2.0 mm.; width
0.7 mm. Texas (Austin) austinicus n. sp.

Form still narrower, subparallel, rather depressed and very shining, the
minute sculpture subobsolete, barely traceable on the elytra; color
pale flavo-testaceous throughout; head nearly three-fourths as wide
as the prothorax, the eyes small, slightly prominent: sulci short,
narrow and very widely separated; antennae rather thick, flavate,
scarcely three-fourths as long as the elytra, the medial joints not
twice as long as wide, the second slightly though evidently longer
and thicker than the third; prothorax short, very nearly twice as
wide as long, equally wide at base and apex; sides strongly rounded
anteriorly, oblique posteriorly and becoming parallel near the right,
sharp and reflexed basal angles; subbasal groove deep, subangulate;
elytra fully one-half longer than wide, but little more than a third
wider than the prothorax, parabolic in apical third, parallel, with
scarcely arcuate sides, the humeri distinct and sharply rounded;
pedicel almost half the basal width; striae one and two distinct but

BEMBIDIIN.E 175

not coarse, subequal, the third feeble, four to seven very feeble; an-
terior fovea barely behind basal third. Length 1.7 mm.; width 0.63
mm. Isthmus of Panama (Colon), — Beaumont. . . *colonicus n. sp.

These two species are closely allied, but colonicus is smaller, still
narrower and rather less parallel than austinicus, with relatively
somewhat smaller head, prothorax and eyes, and with the anterior
thoracic angles more broadly rounded, being in fact completely
obliterated; in austinicus they are very obtusely rounded but not
entirely obliterated.

It may be that the Tachys multistriatiis, mentioned but not de-
scribed by Motschulsky (Etudes, 1855, p. 13 and 1862, p. 29), may
belong to the present genus.

Tachyura Mots.

Barytachys Chd.

There seems to be some confusion in regard to the exact appli-
cation of this generic name, but it appears sufficiently evident that
it must be identified with the genus subsequently described under
the name Barytachys by Chaudoir. At any rate, it is an exceedingly
well defined genus, not at all like Tachys, either in habitus or struc-
ture, and is in North America the largest genus of the Tachys series.
The body is oval, highly polished and very convex, in marked con-
trast to the flattened form and usually less polished surface charac-
terizing the genus Tachys, and the mentum has no trace of the
two foramina of that genus. These foramina, discovered by the
writer when describing T. occultator, were used by Mr. Hayward
subsequently in his group division of Tachys. In the present genus
there are no closed pits or foramina on the mentum, but some-
times there are feeble indentations and, in the case of frontalis,
which is evidently a true Tachyura, Mr. Hayward has, under inade-
quate magnification, mistaken these slight indentations for for-
amina and made a separate group of frontalis. I infer this, at
least, because of the entire conformity of the body in frontalis with
Tachyura in every respect, and because in the drawing of the men-
tum, the supposed foramina are not closed but open in front, a
condition never observable in the true foramina of Tachys or
Pericompsus.

In Tachyura the head is generally notably small, the eyes well

1 76 MEMOIRS ON THE COLEOPTERA

developed and prominent, the anterior superciliary fovea large and
the second antennal joint shorter than the third, as usual in the
subfamily. The integuments are smooth and polished, the hind
thoracic angles have a very short carina and the posterior trans-
verse impression is arcuate and sulciform laterally, generally inter-
rupted medially, where there may be one or sometimes three iso-
lated punctures. The mentum tooth is very short and obtusely
triangular. The elytra are notably smooth and convex, the discal
striae biabbreviated and one to three or four in number; the lateral
stria is very coarse, impressed and with setigerous foveae but widely
and completely interrupted submedially. The striae are very
smooth and devoid of any kind of punctuation, except as noted in
the table below. The anterior tarsi are subject to sexual modi-
fications somewhat as in Bembidion. The species are numerous
and but few have been described hitherto; as represented in my
cabinet they may be known as follows :

Elytra each with a single stria, outside of which there may be sometimes
a second, which however is always excessively fine and only trace-
able under special angle of illumination 2

Elytra each with two striae, the second feebler than the first and biabbre-
viated, but always distinct, impressed and easily observed 14

Elytra each with several striae, some or all of which may be occasionally

punctate 20

2 — Color pale flavo-testaceous throughout, the body notably narrow and

elongate as a rule, stouter in mellita 3

Color darker, the body more abbreviated 6

3 — Sutural stria attaining the base 4

Sutural stria not attaining the base by a considerable distance 5

4 — Body oblong-oval, broader than in the three following, strongly con-
vex, very shining, uniform pale honey-yellow in color; legs flavate;
head small, scarcely two-thirds as wide as the prothorax, the sulci
very short, feeble; eyes moderate, prominent; antennae three-fifths
as long as the elytra, very slender basally, gradually somewhat in-
crassate distally, the sixth joint twice as long as wide, the first three
polished and only sparsely setose; prothorax two-fifths wider than
long, very much wider at base than at the truncate apex; sides mod-
erately rounded and reflexed, widest just before the middle, having
three punctures before the basal beading; foveae shallow; elytra
three-fifths longer than wide, gradually sharply ogival in apical
two-fifths, fully two-fifths wider than the prothorax; humeri broadly
and gradually rounded to the thoracic base. Length 2.2-2.7 mm.;
width 0.9-1.1 mm. Mexico (Tepehuanes, Durango), — Wickham.

*mellita n. sp.
Body smaller and much narrower, pale testaceous, polished; head two-

BEMBIDIIN/E 177

thirds as wide as the prothorax, the eyes very moderate in size and
prominence; frontal sulci obsolete; antennae three-fifths as long as
the elytra, nearly as in the preceding, the joints rather shorter, the
sixth less than twice as long as wide; prothorax much smaller, two-
fifths wider than long, widest barely before the middle, the sides
broadly rounded, straight basally, moderately reflexed; base much
wider than the apex; median part of the subbasal sulcus with three
large punctures, not always clearly defined; foveae small but rather
deep; medial stria imperfect and extremely feeble; elytra three-fifths
longer than wide, two-fifths wider than the prothorax, more rapidly
arcuately ogival in apical third; humeri gradually rounding; foveae
near basal third and three-fiftlas; discal recurvature of the sutural
stria at apex — really the sulcate apical part of an obsolete fifth stria
—close to the margin. Length 2.0-2.4 mm.; width 0.8 mm. Cal-
ifornia (Siskiyou, and to the southward), Nevada (Reno), Arizona
and one example labeled Texas (El Paso), — Dunn rapax Lee.

5 — Form narrowly suboval, convex, polished, flavo-testaceous; head less
than two-thirds as wide as the prothorax, with very small and dis-
tant anterior frontal sulci; eyes moderate but prominent; antennae
three-fifths as long as the elytra, slender, flavate, incrassulate and
slightly fuscous distally, the sixth joint fully twice as long as wide;
prothorax a third wider than long, widest evidently before the mid-
dle; sides anteriorly rounded, becoming very broadly and just visi-
bly sinuate basally, finely but strongly reflexed; base evidently
wider than the apex; subbasal sulcus fine, with a row of regular
punctures, broken at the middle, where there is a single puncture
on the median line; foveae small, remote from the angles; elytra two-
thirds longer than wide, very gradually acutely ogival behind, three-
sevenths wider than the prothorax, the foveae small, near basal and
before apical third. Length 2.1-2.35 mm.; width 0.7-0.78 mm.
Arizona (Yuma), Utah (southwestern) and Texas (Laredo).

audax Lee.

Form elongate-suboval, convex, polished, flavo-testaceous; head scarcely
two-thirds as wide as the prothorax, with obsolete sulci and moder-
ate, rather prominent eyes; antennae very slender, barely three-
fifths as long as the elytra, evenly filiform, the last three joints ab-
ruptly somewhat wider; prothorax two-fifths wider than long, widest
at two-fifths from apex, the sides moderately rounded, straight bas-
ally; base evidently wider than the apex; fine subbasal sulcus with
an even series of punctures, rather widely broken medially, with a
single moderate puncture on the median line; foveae small, remote
from the angles, the carina of which is very evident though short;
elytra three-fifths longer than wide, two-fifths wider than the pro-
thorax, rather obtusely ogival behind, the sides very gradually
rounding toward the humeri; foveae distinct, near basal and slightly
before apical third. Length 2.2-2.5 mm.; width 0.75-0.85 mm.
Indiana, \Yisconsin and Missouri dolosa Lee.

6 — Pronotum with three medio-subbasal punctures, generally rather well

defined 7

T. L. Casey, Mem. Col. VIII, Oct. 1918.

178 MEMOIRS ON THE COLEOPTERA

Pronotum with a medio-subbasal puncture, the subbasal punctured sul-
cus being interrupted medially or not; sometimes the inner puncture
of the lateral rows of punctures may be slightly more pronounced,
giving a vague appearance of three punctures, a division by the
presence or absence of three punctures being therefore not always
wholly unequivocal 9

7 — Body very deep and uniform polished black, the under surface pice-
ous, the legs rufous. Head three-fifths as wide as the prothorax,
without evident sulci, the eyes rather small and very moderately
prominent; antennae fuscous, testaceous basally, three-fifths as long
as the elytra, slender basally, gradually feebly incrassate distally;
prothorax two-fifths wider than long, the sides rather strongly, sub-
evenly arcuate, extremely briefly subsinuate at the minutely sub-
prominent angles; subbasal punctate sulcus completely interrupted
medially, with an isolated medial fovea, the end punctures of the
lateral series rather more pronounced than the others, giving the
appearance of three medio-basal punctures; carina small and feeble,
the foveae shallow, remote from the carina; elytra oval, one-half
longer than wide, a third wider than the prothorax; sutural stria
deep, not attaining the base; outside of this a second excessively fine
feeble stria is sometimes glimpsible. Length 2.0 mm.; width 0.8
mm. California (Paraiso Springs, Monterey Co.). San Diego—
LeConte anthrax Lee.

Body virtually unicolorous, the elytra without obvious nubilously paler
areas. Color very dark rufous, the legs slightly paler; head small,
less than three-fifths as wide as the prothorax, with two very small
and feeble anterior frontal impressions; eyes moderate in size and
prominence; antennae slender, gradually very slightly incrassate dis-
tally, infumate, clearer basally, fully two-thirds as long as the ely-
tra; prothorax large, nearly one-half wider than long, wider at base
than apex, widest at about the middle, the sides subevenly and mod-
erately arcuate throughout; three subbasal punctures isolated and
distinct; foveae small, rounded, distant from the angles; carina small
but well defined; elytra one-half longer than wide, barely a fourth
wider than the prothorax, the coarse deep sutural stria not attain-
ing the base; foveae at third and three-fifths. Length 1.8-2.3 mm.;
width 0.75-0.85 mm. Texas (Galveston). Many specimens.

solita n. sp.

Body castaneous, the elytra with suffused slightly paler coloration ex-
ternally toward base, also posteriorly and sometimes laterally .... 8

8 — Form suboval, rather stout, very convex and highly polished; head
notably small, generally only a little more than half as wide as the
prothorax; eyes very moderate in size and convexity; anterior im-
pressions small and feeble; antenna? nearly as in the preceding; pro-
thorax not so large and much more rounded at the sides, two-fifths
wider than long, much wider at base than apex, the sides evenly,
subcircularly rounded, nearly straight basally, widest slightly be-
fore the middle; three subbasal foveae isolated and distinct; foveae
small, deep, distant from the angles, which are briefly carinate;
elytra not quite one-half longer than wide, nearly two-fifths wider

BEMBIDIIN^E 179

than the prothorax, gradually obtusely ogival in nearly apical half;
coarse deep sutural stria almost but not quite attaining the base;
foveae at basal third and just behind the middle. Length 1.9-2.3
mm.; width 0.75-0.9 mm. Texas (Austin, Waco and Houston).

soror n. sp.

Form more oblong-suboval and not quite so convex, pale testaceous
throughout, the paler nubilosity of the elytra so faint as to be in-
distinct; head three-fifths as wide as the prothorax, the eyes moder-
ate; anterior strioles short and feeble; antennae nearly two-thirds as
long as the elytra, feebly and gradually incrassate, slender basally
as usual; prothorax nearly one-half wider than long, widest near
apical two-fifths; base slightly wider than the apex; sides strongly
rounded, straight basally, the angles minutely subprominent; sub-
basal arcuate punctate sulcus distinct laterally, the three medial
punctures isolated and distinct; foveae small; margins very finely
reflexed: elytra one-half longer than wide, two-fifths wider than the
prothorax, rapidly obtusely ogival behind, the parallel sides arcuate,
very gradually rounding basally, the humeri not exposed at base
beyond the thoracic base; coarse sutural stria abbreviated in basal
seventh; foveae small, near basal and apical third. Length 2.0
mm.; width 0.9 mm. New Mexico (Jemez Springs), — Woodgate.

monticola n. sp.

Form broader and more parallel, convex, polished, castaneous, each
elytron with two large nubilous areas of paler tint; head larger than
in soror, though barely more than half as wide as the prothorax, the
eyes moderate, rather prominent; short anterior sulci distinct; an-
tennae three-fifths as long as the elytra, yellow and slender basally,
fuscous and very feebly incrassate distally; prothorax large and very
convex, nearly one-half wider than long, widest barely before the
middle, the sides strongly rounded, moderately reflexed; surface
with the three subbasal punctures isolated and distinct; elytra
scarcely one-half longer than wide and about a third wider than the
prothorax, parallel, feebly arcuate at the sides, obtusely parabolic
at apex; deep sutural stria distinctly abbreviated at base: foveae
very small, at about third and three-fifths. Length 2.5 mm.; width
i.o mm. Mississippi (Vicksburg). [T. incurvus Lee. nee Say].

nebulosa Chd.

Form and coloration somewhat as in nebulosa but less broad and fre-
quently nearly black, in which case the elytral paler areas are often
inconspicuous and still more nubilous; head larger than in soror,
though scarcely over half as wide as the prothorax, the anterior
short sulci minute and fine; eyes well developed and rather prom-
inent; antennae as in nebulosa; prothorax relatively not quite so
large as in the latter species, not one-half wider than long, widest
rather distinctly before the middle, the sides strongly, evenly
rounded, feebly sinuate basally, the angles sharp and subprominent;
three subbasal discal punctures strong and clearly isolated; base
wider than the apex as usual; elytra one-half longer than wide and
fully two-fifths wider than the prothorax, broad, oblong-suboval,
gradually ogival in nearly posterior two-fifths; sides parallel, arcu-

i8o MEMOIRS ON THE COLEOPTERA

ate; deep sutural stria distinctly abbreviated at base, exactly as in
nebulosa, from which the present species differs in coloration and in
the narrower form, as stated, and in its relatively smaller head and
prothorax. Length 2.1-2.35 mm.; width 0.8-0.95 rnm. Utah
(Provo and neighboring regions), — YVickham. Many specimens.

sectator n. sp.

A — Almost similar to sectator but slightly more elongate and larger
in size, the prothorax more rapidly narrowed basally, the three
subbasal punctures similarly isolated; elytra slightly more elon-
gate, more gradually obtusely acuminate at apex; sutural stria
almost as abbreviated at base. Length 2.25-2.4 mm.; width 0.83

-0.93 mm. Arizona. Four examples sospes n. subsp.

9 — Ground color piceous or castaneous to rufo-testaceous 10

Ground color deep black, highly polished as usual 13

10 — Elytra somewhat as in the preceding section, having each two very

nubilously indefinite paler areas 1 1

Elytra uniform in color, or without two paler areas 12

II — Body oblong-oval, convex, moderately stout, piceous to castaneous,
the elytra marked as in nebulosa; head nearly three-fifths as wide as
the prothorax, the eyes rather well developed and prominent; an-
terior impressions very feeble; antennae fuscous, paler and more
slender basally, three-fifths as long as the elytra; prothorax rela-
tively large, one-half wider than long or nearly, widest but little
before the middle; base much wider than the apex; sides almost
evenly and strongly rounded throughout, straight near the obtuse
basal angles; arcuate subbasal sulcus finally punctate; a larger me-
dial puncture is more or less isolated; foveae shallow and indefinite;
carina small; elytra rather more than one-half longer than wide,
barely a third wider than the prothorax, parallel, obtusely ogival at
apex, the sides very gradually rounded toward the humeri; deep
sutural stria moderately abbreviated at base; outside of this coarse
sutural stria a second, extremely fine, may sometimes be discovered;
foveae at basal third and behind the middle. Length 1.7—2.3 mm.;
width 0.6-0.8 mm. Rhode Island and North Carolina to Minne-
sota and Arkansas. Very abundant, the series at hand numbering
more than sixty specimens. [T. puhhellits Lee. nee Laf. ; anceps

Lee.] incurva Say

Body somewhat as in incurva in outline and coloration, but larger and
stouter, the prothorax widest less medially; head four-sevenths as
wide as the prothorax, the eyes moderate in size and prominence;
antennae similar; prothorax large, not quite one-half wider than long,
widest at anterior two-fifths; sides well rounded anteriorly, nearly
straight and oblique in about basal half; finely punctate subbasal
sulcus entire, the large medial puncture slightly isolated foveae at
the outer ends of the sulcus as usual, small but rather deep; elytra
oblong, parallel, obtusely ogival behind, more than one-half longer
than wide, scarcely a third wider than the prothorax; striae as in
incurva, except that the sutural stria more nearly attains the base,
sometimes entirely so; foveae at two and four sevenths. Length 2.3

BEMBIDIIN.E 181

-2.4 mm.; width 0.85-1.0 mm. Two examples, unlabeled in the
Levette collection and probably from Indiana vernicata n. sp.

Body shorter and much stouter than in incnrva, paler in color as a rule,
the ground tint castaneous, the paler elytral areas similarly distinct;
head four-sevenths as wide as the prothorax, the eyes only moderate
in size but notably prominent; anterior frontal impressions somewhat
longer than usual; antennae almost as in -incurva but longer, paler
and more slender, fully two-thirds as long as the elytra; prothorax
remarkably large, two-fifths wider than long, the base much wider
than the apex as usual, widest near anterior two-fifths; sides ante-
riorly rather broadly, not very strongly rounded, moderately oblique
and nearly straight in almost basal half; subbasal sulcus moderate,
the medial puncture strong, isolated, from it extends to about apical
fourth the very fine medial stria; foveae small and rather deep; ely-
tra barely one-half longer than wide, sometimes less, about a fourth
wider than the prothorax, obtusely parabolic at apex; coarse sutural
stria not quite, though nearly, attaining the base; outside of it a
feeble abbreviated stria is generally observable under oblique illumi-
nation; fovese very small, at two and four sevenths. Length 1.9-
2.2 mm.; width 0.7-0.9 mm. Texas (Austin, Waco and Houston)
and Mississippi (Vicksburg) congener n. sp.

12 — Form rather narrow, elongate-suboval, strongly convex, highly pol-
ished, uniform pale testaceous-brown throughout, the legs more
flavate; head rather more than three-fifths as wide as the prothorax,
the eyes moderate but prominent; anterior strides very minute;
antennae fusco-testaceous, a little clearer basally, three-fifths as long
as the elytra; prothorax large, one-half wider than long, widest at
about the middle, the sides strongly and subevenly arcuate, nearly
straight basally, the angles sharp, scarcely prominent and more than
right; subbasal impressed line completely impunctate, the medial
puncture evident, subisolated; foveae small, distinct, distant from
the angles as usual; elytra fully one-half longer than wide, scarcely
a third wider than the prothorax, parallel, evenly parabolic in about
apical third; deep sutural stria abbreviated in basal sixth or seventh;
outside the sutural stria a second extremely fine line is sometimes
glimpsible; fovese behind basal and before apical third. Length 1.9
-2.2 mm.; width 0.75-0.83 mm. New Jersey and Virginia (Nor-
folk). [ Tachys fuscicornis Hayw. nee Chd.] gemella Csy.

Form parallel or oblong-suboval, very small in size, convex, highly pol-
ished and sculptureless, pale yellowish-brown throughout, the legs
and under surface still paler; head feebly infumate, notably small,
barely over half as wide as the prothorax, the anterior strides short
but distinct; eyes very moderate in size and convexity; antennae
scarcely two-thirds as long as the elytra, blackish and incrassate
distally, more slender and flavescent basally; prothorax relatively
larger than usual, three-fifths wider than long, wider at base than
at apex, the sides broadly and feebly arcuate throughout, slightly
straighter posteriorly, the angles obtuse but not rounded; subbasal
sulcus interrupted medially, with a single strong puncture in the
interval: elytra oblong-oval, very gradually rounded behind, the

1 82 MEMOIRS ON THE COLEOPTERA

sides gradually and broadly rounding to the thoracic base, one-half
longer than wide and barely over a fifth wider than the prothorax;
sutural stria rather deep, distinctly abbreviated at base; a second
very fine stria is also barely glimpsible; fovese at basal third and at
three-fifths, not widely separated. Length 1.7 mm.; width 0.68
mm. Rhode Island (Boston Neck) parallela n. sp.

Form more abbreviated and stouter, still smaller, polished, blackish-
castaneous, the elytra either uniformly more testaceous or gradu-
ally rufulate toward base; head fully three-fifths as wide as the pro-
thorax, the anterior strides evident; eyes very moderate in size
but rather prominent; antennae fusco-testaceous, clearer basally,
relatively longer than usual, three-fourths as long as the elytra; pro-
thorax two-fifths wider than long, widest at about the middle, the
sides subevenly arcuate, rather straighter and more converging
basally; base but slightly wider than the apex; subbasal sulcus with
a regular series of fine punctures, the medial larger puncture distinct;
foveae small, rather deep, formed as usual; elytra scarcely one-half
longer than wide, two-fifths wider than the prothorax, oval, the deep
sutural stria abbreviated in basal eighth; no fine stria is glimpsible
outside the sutural; foveae near basal third and four-sevenths.
Length 1.65-2.0 mm.; width 0.62-0.75 nim. Rhode Island to Kan-
sas. Rather abundant. [Baryt. glossema Csy.] granaria Dej.

Form very short, stout, suboval, polished, strongly convex and very uni-
form pale brownish-testaceous in color throughout; head more than
three-fifths as wide as the prothorax, the anterior strides distinct,
oblique; eyes well developed and moderately prominent; antennae
shorter than in granaria, flavate, more incrassate and dusky dis-
tally, three-fifths as long as the elytra; prothorax nearly one-half
wider than long, the base subequal to the apex, widest at about the
middle, the sides strongly, subevenly arcuate, notably oblique bas-
ally, the angles minutely prominent though more than right; sub-
basal sulcus fine, very feebly eubcrenulate, as though suggesting
punctures, but these are not definite; medial puncture distinct;
foveae small, rather deep, not so distant from the angles as usual;
elytra shorter than in any other species, barely two-fifths longer
than wide, almost evenly oblong-oval, the deep sutural stria obso-
lete in basal seventh; the second extremely fine line is very faintly
glimpsible and as nearly as possible obsolete; foveae nearly as in the
preceding species. Length 1.6 mm.; width 0.75 mm. Virginia
(Fortress Monroe) brevis n. sp.

13 — Body stout, very convex and polished, deep black, each elytron with
an external subbasal and lateral posterior pale spot, rather sharply
defined and conspicuous; legs and antennae clear testaceous through-
out, the latter slender, barely visibly incrassulate distally and about
two-thirds as long as the elytra; head but little more than half as
wide as the prothorax, the anterior strioles sharply defined; eyes
unusually small, moderately convex, the two superciliary punctures .
equally distant from the eye; prothorax large, nearly one-half wider
than long, parallel, the sides subevenly and moderately rounded
throughout; base distinctly wider than the apex; subbasal sulcus

BEMBIDIIN^E 183

with an even row of small punctures, interrupted at the middle,
where the single larger puncture is distinct; foveae small, distant
from the angles; elytra less than one-half longer than wide, only a
little more than a fourth wider than the prothorax, evenly ogival
in posterior two-fifths, deep sutural stria obsolete in basal eighth,
the second very fine line sometimes visible; foveae near two-fifths
and just behind the middle. Length 1.8-2.1 mm.; width 0.7-0.85
mm. Missouri (St. Louis), North Carolina (Asheville), New York
and Rhode Island. An attached note by Jiilich says that the spe-
cies was found in large numbers with ants in February. . . laetifica n. sp.

Body rather narrow, elongate-suboval, convex, shining, deep black, each
elytron with the humerus very indefinitely and feebly pallid and
with a subexternal area near apical third, which is feebly and very
indefinitely pale; legs rufous; head barely more than half as wide as
the prothorax, the anterior strides distinct; eyes moderate in size,
peculiar in being almost flat; antennae short, infuscate distally, but
little more than half as long as the elytra; prothorax nearly one-half
wider than long, widest at anterior two-fifths, the sides there mod-
erately rounded, oblique and nearly straight in fully basal half;
subbasal sulcus with a regular line of very close-set small punctures,
the larger medial puncture distinct; foveae rather larger and deeper
than usual, remote from the angles; elytra more than one-half longer
than wide, gradually acutely ogival in fully apical two-fifths, only
about a fourth wider than the prothorax; deep sutural stria attain-
ing the base or virtually so, the second line rather distinct in most
examples; foveae at two and four sevenths. Length 1.85-2.1 mm.;
width 0.65-0.75 mm. Nevada (Reno) and California (Humboldt
Co.). Many specimens renoica n. sp.

Body narrowly oval, convex, polished, deep black, the elytra without
paler areas; under surface and legs obscure rufous; head relatively
larger, three-fifths as wide as the prothorax, the anterior strioles
distinct, oblique; eyes moderate and slightly convex but not prom-
inent; antennae fuscous, thick, slender and pale basally, three-fifths
as long as the elytra; prothorax scarcely two-fifths wider than long,
parallel, widest at the middle, the sides very evenly and moderately
arcuate from apex to base, the latter wider than the apex, which is
truncate, with the obtuse angles unusually pronounced; subbasal
sulcus with small close-set punctures, the series rather widely inter-
rupted medially, the medial puncture large and strong; foveae mod-
erate, deep, the carina at the angles short but unusually distinct;
elytra one-half longer than wide, fully two-fifths wider than the pro-
thorax, very evenly oval, arcuately rounding in nearly apical half;
deep sutural stria slightly abbreviated at base; there is no distinct
second line; foveae small, near basal and apical third. Length 1.9
mm.; width 0.75 mm. California (Lake Tahoe). One specimen.

tahoensis n. sp.

14 — Body pale flavo-testaceous throughout and elongate, the habitus
much as in dolosa. Polished, rather convex; head fully three-fifths
as wide as the prothorax, the anterior strioles feeble, oblique; eyes
rather large and convex; antennae two-thirds as long as the elytra,

184 MEMOIRS ON THE COLEOPTERA

infumate and moderately dilated distally, thinner and yellow bas-
ally; prothorax relatively very moderate in size, two-fifths wider
than long, widest at two-fifths from the apex, the sides rounded,
oblique and nearly straight in about basal half; base distinctly wider
than the apex; subbasal sulcus unusually arcuate, feebly subcrenate
but not clearly punctate, rather widely interrupted at the middle,
the medial puncture strong; foveae small, rather deep, not far from
the small but evident carina; elytra elongate, three-fifths longer
than wide, nearly three and one-half times as long as the prothorax
and almost one-half wider, parallel, with broadly arcuate sides,
rather obtusely parabolic in about apical third; humeri unusually
rapidly rounded; deep sutural stria abbreviated at base, the second
distinct but not so strong and greatly biabbreviated, both with
feeble crenulation but without distinct punctures of any kind; foveae
rather widely impressed, near basal and apical third. Length 2.1
mm.; width 0.8 mm. Arizona (Riverside), — Wickham. Three sim-
ilar examples apacheana n. sp.

Body darker in tint, most often deep black, sometimes with a feeble

posterior reddish cloud on each elytron 15

15 — Body elongate in form. Pacific coast regions 16

Body short and much more ventricose as a rule. Atlantic regions.. . . 17
16 — Form subparallel, with rather small anterior parts, dark red-brown
in color, the elytra black throughout; under surface piceous, the
legs rufous; head almost two-thirds as wide as the prothorax, with
well developed and rather prominent eyes; antennae fusco-testaceous,
clearer basally, slender, three-fifths as long as the elytra; prothorax
two-fifths wider than long, widest slightly before the middle, the
sides strongly rounded, oblique behind, becoming feebly sinuate
near the sharp and subprominent angles; base wider than the apex,
subbasal sulcus with a regular row of small punctures, interrupted
medially, where there is a strong median puncture; the ends of the
punctured series are rather deeper, producing the appearance of
three punctures in some cases; foveae small; carina short and ob-
lique; elytra three-fifths longer than wide, about one-half wider than
the prothorax, the sutural stria much abbreviated basally, the sec-
ond distinct; foveae rather large, before basal third and near three-
fifths. Length 1.8-2.4 mm.; width 0.75-0.9 mm. California (Sta.

Cruz to Sonoma) sedula n. sp.

Form nearly similar but much broader, the coloration similar; head three-
fifths as wide as the prothorax, the eyes not quite so large, convex;
antennae similar, moderately and very gradually incrassate distally;
prothorax more transverse, one-half wider than long, otherwise as
in sedula, the deep subbasal sulcus closely punctate, widely and ab-
ruptly interrupted medially, the median puncture strong; elytra
broader, about one-half longer than wide, evidently less than one-
half wider than the prothorax, similarly rather rapidly subobtusely
rounded behind; striation similar, except that the sutural stria comes
nearer to attaining the base and, that outside the second stria, an
excessively fine third line is sometimes glimpsible and externally tan-

BEMBIDIIN^E 185

gent to the well developed foveae, situated as in sedula. Length
2.35-2.6 mm.; width 0.95-1.1 mm. Nevada (Reno), .profuga n. sp.

17 — Pronotum with three distinct medio-subbasal punctures 18

Pronotum without three subbasal punctures 19

18 — Body very small, convex, not very stout, polished, black, piceous
when immature, the elytra generally indefinitely rufescent poste-
riorly; legs and under surface rufous; head three-fifths as wide as the
prothorax, the anterior strides distinct; eyes well developed, con-
vex; antennae piceous, pale basally, feebly incrassate distally, two-
thirds as long as the elytra; prothorax nearly one-half wider than
long, widest but little before the middle, the sides strongly rounded,
oblique and straighter basally, the angles minutely subprominent:
subbasal sulcus wholly impunctate, fine, interrupted medially, where
three punctures are usually distinct; foveae small, distant from the
angles; elytra two-fifths longer than wide and about two-fifths wider
than the prothorax, rapidly ogival in about posterior third; sutural
stria virtually attaining the base, the second stria abbreviated but
almost as distinct as the sutural; outside of this a third very fine
stria can sometimes be glimpsed ; foveae near two and four sevenths.
Length 1.65-2.0 mm.; width 0.7-0.8 mm. Rhode Island (Boston
Neck), Virginia (Norfolk) and North Carolina (Asheville). Abun-
dant. [Tachys mendax Lee.] xanthopus Dej.

A — Similar to xanthopus but stouter, the head and prothorax similar,
black, the latter relatively smaller in size; elytra broader, a third
longer than wide, almost one-half wider than the prothorax, uni-
form piceous-brown in color, the striation similar, except that
the second stria is shorter; under surface and legs rufous. Length
2.1 mm.; width 0.88 mm. Rhode Island (Boston Neck). One

example laxipennis n. subsp.

B — Form much narrower and more parallel than in xanthopus, black,
the elytra uniformly piceous-brown; under surface piceous, the
legs subflavate; head and prothorax nearly as in xanthopus, the
elytra much narrower and more parallel, rather more than one-
half longer than wide, two-fifths wider than the prothorax; sides
parallel and feebly arcuate, the striation as in xanthopus. Length
1.6 mm.; width 0.6 mm. Rhode Island (Boston Neck). One

specimen famelica n. subsp.

Body larger and more elongate, with relatively larger prothorax than in
xanthopus, deep polished black throughout, the under surface and
legs rufous, the elytra not rufous posteriorly; head as in xanthopus;
antennae differing in being fuscous, with only the first or first two
joints flavate; prothorax only two-fifths wider than long, otherwise
as in the preceding, except that the sinus of the sides at the prom-
inent basal angles is more pronounced, and the three punctures are
still more conspicuous and rather more close-set; elytra much longer,
fully one-half longer than wide, only a third wider than the pro-
thorax, more gradually obtusely ogival behind; sutural stria deep
and fully and completely attaining the base, the second stria shorter
than in xanthopus and scarcely so marked; foveae similar. Length
2.0-2.25 mm.; width 0.78-1.0 mm. Rhode Island (Boston Neck),

1 86 MEMOIRS ON THE COLEOPTERA

New York (Long Island), New Jersey and Virginia (Fortress Mon-
roe). Abundant. [Tachys xanthopits Lee. nee Dej.]. .levipes n. sp.

Body stout, very convex, ventricose, black, polished, each elytron with
a large discal rufous spot near apical fourth; under surface piceous,
the hind body rufous, the legs flavo-rufous; head well developed,
much larger than in levipes, with rather large and prominent eyes,
two-thirds as wide as the prothorax, the anterior strides distinct,
parallel; antennae slender, but very feebly incrassate, fuscous, paler
at base, nearly three-fourths as long as the elytra; prothorax as in
levipes, but slightly shorter and more transverse and differing in
having the fine subbasal sulcus only visible toward the foveae and
finely punctate, the wide vacant median space with three strong
isolated punctures, of which the median is much the largest; elytra
very nearly one-half longer than wide, three-sevenths wider than the
prothorax, gradually parabolic in about apical two-fifths, broader
and with more arcuate sides than in levipes; sutural stria virtually
attaining the base, the second feebler and much abbreviated; out-
side of this there are feeble impressed traces of two or three other
striae as a rule; foveae strong, at two and four sevenths, adjoining
the third faint line, these lines not sufficiently distinct to associate
the species with vivax and allied species. Length 1.9-2.3 mm.;
width 0.72-0.9 mm. Texas (Galveston and Austin), Louisiana
(Alexandria), Mississippi (Vicksburg), Indiana and Iowa (Keokuk).
Abundant rubricauda n. sp.

19 — Form oblong, strongly convex, deep polished black, the elytra feebly
picescent; under surface black, the legs obscure testaceous; head
three-fifths as wide as the prothorax, with relatively large and prom-
inent eyes, the anterior strioles small but deep; antennae slender,
feebly incrasstilate, three-fourths as long as the elytra, fuscous, the
first three or four joints flavo-testaceous; prothorax large, fully two-
fifths wider than long, widest just before the middle, the sides broadly
and strongly rounded, straight -and oblique posteriorly; subbasal
sulcus impunctate, entire, the space between it and the basal margin
convex and bead-like; elytra barely two-fifths longer than wide and
about a third wider than the prothorax, parallel, with but slightly
arcuate sides and rapidly rounded humeri, arcuately ogival in about
apical third; sutural stria very slightly abbreviated at base, the
second rather finer, shorter and feebler than usual in this subsec-
tion; .foveae at two and four sevenths. Length 1.75 mm.; width
0.8 mm. North Carolina (Southern Pines), — Manee. Six exam-
ples. Size rather uniform ancilla n. sp.

Form nearly as in the preceding, but less stout, the prothorax not quite
so large, piceous-black, polished, the under surface rufous, the legs
more flavate; head larger and nearly two-thirds as wide as the pro-
thorax, with still larger and prominent eyes, the strioles and antennae
somewhat as in ancilla; prothorax nearly one-half wider than long,
in form and structure as in the preceding; base similarly distinctly
wider than the apex; subbasal sulcus impunctate, rather shallower
than in ancilla and, at the middle, having a single very faint sub-
punctiform impression; elytra as in ancilla but shorter, ogivally

BEMBIDIIN/E 187

rounded in apical two-fifths, two-fifths wider than the prothorax;
sutural stria more nearly attaining the base, the second longer and
stronger; foveae at basal third and just visibly behind the middle.
Length 1.8 mm.; width 0.7 mm. Florida (Lake Worth), — Kinzel.

fatua n. sp.

20 — Color black; body shorter and stouter, the elytra more or less evi-
dently rufous near the apex, the striae never punctulate 21

Color castaneous or castaneo-testaceous; body more elongate; striae
sometimes punctulate 22

21 — Body stout, suboval, strongly convex and highly polished, rather
large in size; elytra generally with the lateral more pallid area near
the apex small, extremely feeble and sometimes undis/roverable;
under surface and legs rufo-ferruginous; head three-fifths as wide
as the prothorax, the strides rather long and deep; eyes moderate
but prominent; antennae piceous, flavate basally, two-thirds as long
as the elytra; prothorax large, very convex, two-fifths wider than
long, much wider at base than at apex, widest slightly before the
middle; sides broadly, strongly rounded, becoming distinctly sinu-
ate before the basal angles, which are right, sharp and carinulate;
subbasal sulcus fine, slightly punctulate laterally, broadly inter-
rupted, with three strong and conspicuous isolated punctures medi-
ally; elytra not quite one-half longer than wide, two-fifths wider
than the prothorax, arcuately ogival in posterior two-fifths*; sides
parallel, rather gradually rounding at the humeri; sutural stria not
quite attaining the base, the second and third strong, abbreviated,
a fourth and fifth stria also just glimpsible; foveae attached to the
inner side of the third stria at two and four sevenths. Length 2.5
-2.9 mm.; width 0.9-1.2 mm. Missouri (St. Louis). Six examples.
District of Columbia — LeConte capax Lee.

Body stout, strongly convex and polished, black or feebly picescent; ely-
tra each with a large nubilous red lateral area near the apex; under
surface piceous-black, the abdominal tip black, the legs dark rufous;
head three-fifths as wide as the prothorax, the strioles moderate, par-
allel; eyes very moderate in size and prominence; antennae piceous,
paler basally, two-thirds as long as the elytra; prothorax two-fifths
wider than long, wider at base than at apex, widest at two-fifths from
apex, the sides very moderately rounded, becoming slightly sinuate
only at the sharp and subprominent basal angles; subbasal three
punctures coarse, deep and clearly isolated, the fine oblique sulcus,
from each lateral puncture to the moderate fovea, with fine and feeble
punctuation; carina short but strong, at a slight distance inside of
each angle; elytra one-half longer than wide, not quite one-half
wider than the prothorax, arcuately ogival in posterior two-fifths,
the sides rapidly rounding at the humeri; sutural stria virtually
attaining the base, the second and third abbreviated but rather
strong, the fourth and fifth distinctly visible at certain angles of
reflection; foveae at basal third and three-fifths. Length 2.0-2.4
mm.; width 0.75-0.88 mm. North Carolina (Asheville) and Penn-
sylvania (near Philadelphia). Six examples saturata n. sp.

Body smaller, stout, convex, polished, piceous-black or slightly paler;

1 88 MEMOIRS ON THE COLEOPTERA

elytra each with a large nubilous oval external area, near the apex,
of a pale flavo-rufous tint; under surface rufous, the legs more fla-
vate; head three-fifths as wide as the prothorax, the strides distinct,
the eyes moderate, prominent; antennae piceous, paler basally, two-
thirds as long as the elytra; prothorax nearly one-half wider than
long, widest but slightly before the middle; base very much wider
than the apex; sides strongly rounded, briefly sinuate at the sharp
and rather prominent angles, the carina very short, not distinct;
margins distinctly reflexed; three subbasal punctures large, deep, iso-
lated and conspicuous; foveae very small; elytra barely one-half
longer than wide, two-fifths wider than the prothorax, gradually ob-
tusely ogival in apical two-fifths; sutural stria fully attaining the
base, the abbreviated second and third almost equally impressed,
the fourth and fifth traceable; foveae near two and four sevenths.
Length 1.6-2.0 mm.; width 0.75-0.9 mm. Valley of the Rio Grande
from Brownsville to El Paso gaudens n. sp.

Body still smaller and much narrower, similar in coloration and in the
very polished lustre; head similar, actually though not relatively
smaller, the antennae evidently shorter and fusco-testaceous in color,
three-fifths as long as the elytra; prothorax similar but somewhat
shorter, the three isolated subbasal punctures not so large or deep;
elytra relatively longer, fully one-half longer than wide, gradually
parabolic in outline from slightly behind the middle, a third wider
than the prothorax; striation as in gaudens. Length 1.6-1.65 mm.;
width 0.68 mm. Texas (Waco and Austin) fracta n. sp.

22 — Form much more elongate than in the preceding subsection and
rather less strongly convex, polished, piceo-rufous; under surface
rufous, the legs more flavate; head nearly two-thirds as wide as the
prothorax, the anterior strides faint; eyes moderate in size and
prominence; antennae rather long and compressed, fusco-testaceous,
two-thirds as long as the elytra; prothorax two-fifths wider than
long, widest at two-fifths from the apex, the latter evidently, though
not greatly, narrower than the base; sides moderately rounded
anteriorly, feebly oblique in about basal half, very slightly sinuate
near the angles, which are right and sharp; margins moderately re-
flexed; three isolated subbasal punctures distinct, but relatively
smaller than in the preceding subsection; foveae moderate, the carina
distinct but obtuse; elytra slightly more than one-half longer than
wide and almost one-half wider than the prothorax, parallel, ob-
tusely parabolic at tip, perfectly uniform in coloration; sutural stria
not quite attaining the base, the second and third distinct, the fourth
and fifth traceable, all the striae faintly and irregularly subpunctu-
late; foveae adhering to the third stria as usual and at two and four
sevenths. Length 2.35-2.6 mm.; width 1.0-1.05 mm. Pennsyl-
vania and Indiana. Not very abundant tripunctata Say

Form less elongate, more oval, more convex, the sides of the prothorax
more evenly rounded; each elytron with a nubilous paler area exter-
nally behind; color rufo-castaneous; under surface and legs rufous;
head but little more than half as wide as the prothorax, the eyes
moderate; antennae fusco-testaceous, two-thirds as long as the ely-

BEMBIDIIISLE 189

tra; prothorax much larger than in tripunctata and more distinctly
wider at base than at apex, widest less anteriorly, the sides broadly
rounded, straighter basally, the angles minutely subprominent, with
rather distinct carina; three subbasal punctures strong and isolated,
the fine sulcus — connecting the lateral of the punctures with the
moderate foveae — not punctate; elytra one-half longer than wide,
fully a third wider than the prothorax, rather gradually narrowly
ogival in posterior two-fifths; striae not evidently punctulate, there
being but feeble traces visible under high amplification; sutural
stria attaining the base, the four others abbreviated, distinct, grad-
ually diminishing; foveae near two and four sevenths. Length 2.2-
2.5 mm.; width 0.78-0.9 mm. Pennsylvania and North Carolina
(Asheville) to Iowa (Keokuk) vivax Lee.

Form more oblong-oval, rather less convex, polished, rufous in color, the
elytra behind nubilously more flavate externally; head relatively
larger and with larger, more prominent eyes, nearly t\vo-thirds as
wide as the prothorax; antennae flavo-testaceous, about two-thirds
as long as the elytra; prothorax much smaller than in vivax, about
as in tripunctata in that respect, but with the sides more broadly
rounded, almost exactly as in vivax; base much wider than the apex,
the angles rather more than right but sharp, the carina small; three
subbasal punctures and lateral oblique sulci as in vivax; elytra almost
three-fifths longer than wide, fully two-fifths wider than the pro-
thorax, gradually ogival in about apical two-fifths; striae only slight-
ly irregular but not punctulate, the sutural slightly abbreviated at
base, the second and third distinct, but not so deep as in tripunctata
or vivax, the others feebly glimpsible; foveae at basal and before
apical third. Length 2.5 mm.; width 0.9 mm. Texas (Laredo).
One example laredoana n. sp.

Form elongate-suboval, only moderately convex, uniformly dark red-
brown throughout; head two-thirds as wide as the prothorax, with
minute anterior strioles and very moderate eyes; antennae fusco-
testaceous, rather more than two-thirds as long as the elytra; pro-
thorax relatively small, fully two-fifths wider than long and widest
near two-fifths from the apex, the sides broadly rounded, feebly
converging and straight basally, the angles minutely subprominent,
with the carina short; base slightly wider than the apex; middle sub-
basal puncture distinct, isolated, the lateral — forming the ends of
the punctured sulcus thence to the foveae — not very strongly de-
veloped; foveae almost completely obsolete; elytra oblong-oval, with
arcuate sides, fully one-half longer than wide and about one-half
wider than the prothorax, rather rapidly ogival behind; striae
smooth, the sutural abbreviated at base, the second much abbre-
viated behind but almost as deep, the third short but distinct, those
beyond faintly glimpsible; foveae at basal and before apical third.
Length 2.3 mm.; width 0.88 mm. New York (Bluff Point, Lake
Champlain). One example serva n. sp.

The species described above as mellita is of notably distinct hab-
itus, but I fail to find any reference to it in the works of Mr. Bates.

190 MEMOIRS ON THE COLEOPTERA

The difference between the tripunctate and unipunctate condi-
tion near the thoracic base, is not always clear, but fortunately it
serves unequivocally in separating species of the incurva and nebu-
losa subsections, which otherwise would be difficult to treat, be-
cause of the many species and lack of striking structural modifi-
cation.

The species described by the writer many years ago under the
name Barytachys gemellus, was united with fuscicornis Chd., by
Mr. Hayward, but improperly I think ; fuscicornis, from Louisiana,
seems to be very much larger, being, according to Chaudoir, 2.5
mm. in length.

The two forms laxipennis and famelica are represented only
by single specimens, having the general structural characters of
xanthopus and. found in the same locality; although differing
markedly on cursory comparison, it would therefore be injudi-
cious to assign more than subordinate value to them for the pres-
ent. Xanthopus is a very small species, the length given by De-
jean being 1.5 mm. That author, however, was very apt to under-
estimate the length, as LeConte was to overestimate, depending
entirely upon methods of measurement, the former author evi-
dently holding the insect below the scale and the latter above.
There can be but little doubt that the name mendax was applied
by LeConte to the form named xanthopus by Dejean, and that
the xanthopus of LeConte is the larger, wholly deep black species
named levipes in the above table.

The three species rubricauda, gaudens andfracta are undoubtedly
closely interrelated. The first is the largest and rather the stout-
est and has only two of the elytral striae distinct, though one or two
others are feebly traceable by careful search. Gaudens has five
striae visible, the first three conspicuous; it is a little smaller and
rather less stout than rubricauda, and has a much greater develop-
ment of the bright rufous subapical coloring of the elytra; it seems,
also, to be peculiar to the Rio Grande Valley. Fracta is the small-
est and narrowest and is one of the more diminutive forms of the
genus; it inhabits the interior regions of Texas, more especially to
the westward of the extended Mississippi Valley regions occupied
by rubricauda. These were all confounded with xanthopus by Mr.
Hayward, who at the same time called attention to the diversi-

BEMBIDIIN/E 191

i

fication in elytral striation, erroneously assuming, however, that
this was due to simple variability; the large series at hand show
that this is not by any means probable. Liebecki Hayw., evidently
belongs also to this extensive xanthopus section, but appears to be
larger, stouter and with more transverse prothorax than any known
to me; it is said by Mr. Hayward to be 2-2.5 mm- m length and
occurs in Texas; the elytra are said to be gradually pallescent
posteriorly.

Tachys Steph.

Polyderis Mots, (pars.)

This remarkably isolated genus may always be distinguished at
a glance from any species of Tachyura by the subdepressed form of
the body, thinner integument and usually less polished surface, the
elytra being frequently opalescent because of the minute sculpture.
In fact the entire habitus of the two genera is so different that it
seems strange they should have ever been closely associated; this
was thoroughly recognized by those usually careful observers Mot-
schulsky and Chaudoir, but I do not quite understand why the
latter author in describing Barytachys should have failed to recog-
nize its identity with Tachyura Mots.; this applies also to Mr.
Bates in his treatment of Tachys in the "Biologia."

Tachys differs from Tachyura, not only in the characters stated
above, but in possessing on the surface of the mentum two deep,
circular and very abruptly defined foramina, similar to those of
Pericompsus but smaller in size and wanting in all other genera of
the Tachys group excepting Paratachys. It differs also in the very
shallow sutural stria, but resembles it in having but few .striae and
in the broad interruption of the eighth stria; the latter, besides
being even more widely interrupted than in Tachyura, is more ir-
regular and frequently in part altogether obsolete, leaving merely
a row of setigerous foveae. The maxillary palpi are slender as a
rule, the second joint of the labial stout, the last segment of the
outer maxillary lobe very slender and the mentum tooth small and
sharply triangular. Our numerous species are assignable to the
three following subgeneric groups :

Front broadly bisulcate: eyes well developed; antennae long; recurved
apical part of the sutural stria long 2

192 MEMOIRS ON THE COLEOPTERA

Front without sulci, though having two small anterior strioles; eyes small
or very moderate; antennae short and moniliform; recurvature of
the sutural stria very short 3

2 — Dorsal foveae of the elytra near the fourth stria, the posterior fovea
within the hamate tip of the recurvature of the sutural stria.

I (proximus}

Dorsal fovea3 on or inwardly attached to the third stria, the posterior
fovea nearly as in the preceding, the frontal sulci less approximate.

II (vittiger]

3 — Body very small; palpi shorter than in the two preceding groups, the
mentum tooth but feebly developed Ill (Icevus)

These groups were correctly separated and defined by Mr. Hay-
ward, but were, I think, given rather too little taxonomic weight.
It is impossible to correlate our species with those of Europe, be-
cause of lack of material, but it seems probable that the Icevus type,
at least, does not occur there.

Group I — proximus
Subgenus Tachys in sp.

The species are numerous in this group and occur over the entire
country, from the Atlantic to the Pacific, although represented in
my cabinet by only a single species, edax, in the true Pacific coast
fauna. As a rather remarkable character, it should be stated that
the second antennal joint is, perhaps always, very materially longer
than the third. Mr. Hayward utilizes the structure of the anterior
male tarsus in segregating the species of this difficult group. I
have tried, in the following table, to employ more general charac-
ters, not involving the sex of the individual, but probably without
the success that could be wished ; the species at present forming part
of my collection may be separated as follows:

Prothorax with the sides oblique and broadly sinuate in rather more than
basal half; antennae thicker, the medial joints never more than twice
as long as wide; species allied closely to the European bistriatus
Duft 2

Prothorax with the sides oblique more posteriorly, sinuate only near the
hind angles 3

2 — Form narrowly oblong, subparallel, feebly convex, alutaceous, umber-
brown, the prothorax a little clearer rufous; legs slender, testaceous;
integuments feebly micro-reticulate, the elytra with very minute
strigilation; surface moderately shining; head three-fourths as wide
as the prothorax, the sulci only visible anteriorly, obtuse and shal-
low; eyes moderately large, only feebly convex, extremely minutely

BEMBIDIIN^E 193

»

setulose; antennae piceous, moderately slender, four-fifths as long
as the elytra, the medial joints not quite twice as long as wide, the
third shorter than the second and obconic; prothorax two-fifths
wider than long, widest near apical third; base much narrower than
the apex; sides anteriorly strongly rounded, very finely reflexed,
oblique and broadly sinuate thence to the obtuse and rounded,
strongly reflexed basal angles; transversely angulate entire subbasal
furrow shallow and impunctate; stria broadly impressed between
this and the very feeble anterior impression; elytra almost three-
fifths longer than wide, not quite one-half wider than the prothorax,
parallel, circularly rounded at tip, each with three rather distinct
striae; foveae at basal third and apical fifth or sixth. Length 1.5-
1.8 mm.; width 0.55-0.75 mm. California (coast regions north of
San Francisco and at Truckee) and Nevada (Reno and Elko).

edax Lee.

Form oblong, slightly broader and larger, feebly convex, the coloration
similar; head two-thirds as wide as the prothorax, the eyes moderate
and rather convex; sulci shallow and anterior; antennae piceous,
paler basally, rather thick, three-fourths as long as the elytra, the
medial joints barely twice as long as wide; prothorax nearly one-half
wider than long, widest near apical third; base as wide as the apex;
sides rounded anteriorly, oblique and broadly, feebly sinuate behind
the middle, finely reflexed, broadly and more strongly at the obtuse
and slightly blunt hind angles; transverse subbasal furrow deep but
not punctate; median stria very fine; elytra oblong, nearly one-half
longer than wide, two-fifths wider than the prothorax, parallel, with
arcuate sides, very abruptly rounded at the distinct humeri; sutural
stria rather deep and the second feeble, the third barely traceable;
foveae as in the preceding. Length 1.75-2.1 mm.; width 0.7-0.8
mm. Texas (Galveston) and Arkansas umbripennis Chd.

3 — Antennae rather shorter and stouter, somewhat as in the preceding,
never as long as the elytra, the medial joints never distinctly more
than twice as long as wide and frequently less 4

Antennae longer and more slender, the medial joints generally about
three times as long as wide 6

4 — Color rufo-testaceous, the head dusky. Form rather short and stout,
moderately convex, subalutaceous; legs more flavate; head large,
with very prominent eyes, more than three-fourths as wide as the
prothorax, the sulci rather deep, parallel; antennae flavate, four-
fifths as long as the elytra, the second joint fully one-half longer
than the obconic third, the medial joints slightly more than twice
as long as wide, the tenth correspondingly less; prothorax fully four-
fifths wider than long, widest near apical third; base as wide as the
apex; sides anteriorly strongly rounded, oblique and barely percep-
tibly sinuate posteriorly, the angles moderately reflexed, very ob-
tuse but with the apex minutely subprominent; subbasal angulate
sulcus rather deep; elytra short, only a third longer than wide, less
than one-half wider than the prothorax, rapidly very obtusely
rounded behind, the humeri obtuse but distinct; pedicel not two-
T. L. Casey, Mem. Col. VIII, Oct. 1918.

194 MEMOIRS ON THE COLEOPTERA

fifths the basal width; first and second striae rather strong, subequal,
the third and fourth feebly glimpsible; foveae before three and at six
sevenths. Length 2.0 mm.; width 0.8 mm. Isthmus of Panama
(Colon), — Beaumont *panamensis n. sp.

Color as in the preceding. Form narrower and more parallel, feebly
convex, rather strongly shining; head large, more than three-fourths
as wide as the prothorax; eyes moderate but very prominent; sulci
distinct, converging; antennae fusco-testaceous, paler at base, nearly
four-fifths as long as the elytra, the second joint a fourth longer than
the third, the medial joints just twice as long as wide; prothorax
short, fully four-fifths wider than long, widest near apical third;
base and apex equal; sides broadly rounded, straight basally, the
apices of the very obtuse angles minutely prominent; subbasal sul-
cus moderate in depth, broadly arcuate; elytra one-half longer than
wide, two-fifths wider than the prothorax, circularly rounded behind,
the parallel sides broadly and feebly arcuate, the humeri rather
abruptly rounded; pedicel a little less than half the basal width;
surface sometimes feebly infumate posteriorly; first two striae sub-
equal, distinct but not deep, the third feeble, the fourth barely glimps-
ible; anterior fovea at two-fifths. Length 1.8-2.3 rnm.; width 0.68-
0.85 mm. Arizona vorax Lee.

Color rufous, the head scarcely at all darker; elytra with a posterior sub-
iridescent blackish cloud. Under surface rufous, the legs flavate;
head fully three-fourths as wide as the prothorax, the eyes large,
moderately prominent; sulci moderate, rather convergent; antennae
fuscous, paler at base, three-fourths as long as the elytra, the medial
joints just twice as long as wide, the second very much longer than
the third; prothorax one-half wider than long, the sides anteriorly
broadly rounded, oblique and straight posteriorly, the angles obtuse,
broadly reflexed, not prominent but not distinctly blunt, well de-
fined; subbasal sulcus deep, arcuate; elytra one-half longer than
wide, not 'quite one-half wider than the prothorax, parallel, with
feebly arcuate sides, circularly rounded at apex; first two striae dis-
tinct, three to five barely glimpsible; foveae as in the preceding.
Length 2.0 mm.; width 0.73 mm. Florida (Lake Worth), — Kinzel.

pumilus Dej.

Color uniform dark brownish-rufous throughout; under surface piceous,
the legs more flavate. Surface shining, moderately convex; head
over two-thirds as wide as the prothorax, the eyes moderate in size
and prominence; sulci slightly converging; antennae fuscous, paler
at base, four-fifths as long as the elytra, the medial joints fully twice
as long as wide, the second slightly though evidently Ipnger and
thicker than the third; prothorax two-fifths wider than long, widest
at apical third ; base fully as wide as the apex, if not somewhat wider;
sides moderately rounded anteriorly, oblique in basal half, gradually
slightly though distinctly sinuate basally, the angles very obtuse,
broadly reflexed, not prominent, but also scarcely blunt; anterior
impression evident, the posterior rather deep, subangulate, the me-
dian stria strongly impressed; elytra two-fifths longer than wide, one-
half wider than the prothorax, broadly parabolic in apical two-fifths,

BEMBIDIINJE 195

distinctly wider behind the middle than at base, the sides broadly
arcuate, the humeri moderately rounded; pedicel three-sevenths the
basal width; first stria strong and deep, the second feeble, the others
virtually obsolete, the second reappearing at apex; anterior fovea
strong, at two-fifths. Length 2.2 mm. ; width 0.8 mm. New Jersey.

oblitus n. sp.

Color piceous-black, the head and prothorax dark rufous 5

5 — Body rather convex and strongly shining; form somewhat as in the
preceding, but with relatively smaller head and prothorax; under
surface blackish, the legs pale flavate; head small, more than two-
thirds as wide as the prothorax, the eyes moderate in size, not prom-
inent; sulci converging; antennae piceous, the basal joint rufous,
scarcely at all shorter than the elytra, the medial joints a little
more than twice as long as wide, the second as in the preceding;
prothorax relatively small, barely two-thirds wider than long,
throughout almost as in oblitus, except that the feebly oblique sides
posteriorly are not visibly sinuate, and that the anterior transverse
impression is subobsolete; elytra relatively smaller, oval, one-half
longer than wide, more than one-half wider than the prothorax,
ogival in nearly apical half, much wider behind the middle than at
base, the humeri more broadly rounded than in oblitus, the striation
similar, except that the first and second striae are even more abbre-
viated at base. Length 1.8-2.1 mm.; width 0.7-0.88 mm. New>

York (near the city). Four examples cuneatus n. sp.

A — Similar to cuneatus in general characters, except that the head and
prothorax are relatively larger, the thoracic angles more reflexed;
elytra barely over two-fifths wider than the prothorax, similar
in general form but with the humeri more sharply rounded, and
excepting that three or four striae are more or less visible. Length
2.2 mm.; width 0.82 mm. North Carolina (Asheville).

appalachius n. subsp.

Body slightly less convex and not so shining, the elytra less deep in color;
under surface piceous, the legs flavate; head relatively even smaller
than in cuneatus, barely two-thirds as wide as the prothorax, the
eyes rather well developed, the sulci short and deep; antennae pice-
ous, with pale basal joint, three-fourths as long as the elytra, the
medial joints twice as long as wide, the second much more conspicu-
ously longer and thicker than the third than in cuneatus; prothorax
much shorter, one-half wider than long, as wide at base as at apex,
the moderately rounded sides becoming oblique and straight pos-
teriorly, the angles very obtuse, not prominent; surface nearly as
in the preceding species; elytra relatively larger, less oval, though a
little wider behind the middle than at base, one-half longer than
wide, nearly one-half wider than the prothorax, ogival in apical two-
fifths; humeri moderately rounded; pedicel scarcely more than two-
fifths as wide as the base; four striae on each elytron are distinct, the
sutural the deepest; anterior fovea but little before the middle.
Length 2.1-2.15 mm.; width 0.75 mm. Iowa (Cedar Rapids), —

Brendel. Two specimens iowensis n. sp.

6 — Prothorax narrower at base than at apex 7

196 MEMOIRS ON THE COLEOPTERA

Prothorax about as wide at base as at apex 1 1

7 — Sides of the prothorax very oblique and evidently sinuate posteriorly.
Form subparallel, distinctly convex, highly polished, the elytra with-
out trace of minute sculpture; color rufo-testaceous, the head and a
large central elytral cloud piceous, the latter forming a broad fascia
which envelopes the side margins; legs flavate; head well developed,
nearly four-fifths as wide as the prothorax, the eyes moderate but
prominent; sulci deep, remote, perfectly parallel; antennae slightly
longer than the elytra, infuscate, flavate apically and at base, the
second joint much longer than the third; prothorax four-fifths wider
than long, the sides strongly rounded anteriorly, very oblique bas-
ally and slightly sinuate before the obtuse but prominent and greatly
reflexed angles; margins well reflexed throughout; subbasal impres-
sion deep, angulate; base much narrower than the apex; elytra one-
half longer than wide, barely a third wider than the prothorax;
sides feebly arcuate; humeri distinct; first and second striae distinct,
subequal, all the others obsolete, except the third which is visible
basally; anterior fovea near basal third. Length 1.8-2.0 mm.;
width 0.72-0.75 mm. Isthmus of Panama -(Colon), — Beaumont.

*beaumonti n. sp.
Sides of the prothorax very moderately oblique behind and not evidently

sinuate before the basal angles 8

8 — Head unusually large, about as wide as an elytron 9

Head moderate, always distinctly narrower than an elytron 10

9 — Form elongate, barel}' at all ventricose, polished, rather convex, the
pronotum without minute sculpture, the elytra with extremely fine,
close and feeble strigilation; head blackish, the prothorax pale flavo-
testaceous, the elytra uniform pale brown; under surface and legs
very pale testaceous; head four-fifths as wide as the prothorax, with
moderate, prominent eyes, the sulci not very remote, parallel; an-
tennae as long as the elytra, brown, flavate at base and tip; prothorax
almost one-half wider than long and barely narrower at base than at
apex, widest at two-fifths from apex, the sides broadly, subevenly
rounded, less so basally, with the obtuse angles moderately reflexed,
their apices only minutely prominent; subbasal impression peculiar,
being rather coarse and close to the basal margin; elytra one-half
longer than wide, not quite one-half wider than the prothorax, just
visibly wider behind the middle than at base, the humeri distinct;
pedicel two-fifths the basal width; sutural stria deep and conspicu-
ous, the second barely traceable, the others obsolete; anterior fovea
near two-fifths. Length 2.4 mm.; width 0.8 mm. North Caro-
lina (Southern Pines), — -Manee columbiensis Hayw.

Form rather less parallel, not so convex, not very shining, the elytra pol-
ished, the ground sculpture extremely minute on the pronotum and
elytra; color blackish-piceous, the prothorax obscure rufous; under
surface piceous, the legs pale flavate; head large, only very slightly
narrower than the prothorax, the eyes unusually large and prom-
inent, separated by between two and three times their width, the
sulci moderate, rather distant; surface strongly micro-reticulate;
antennae slender, fully as long as the elytra, blackish, the basal

BEMBIDIIN.E 197

joint flavate; prothorax rather small, not quite one-half wider than
long; base but slightly narrower than the apex, widest before the
middle, the sides moderately and subevenly rounded and well re-
flexed throughout; obtuse basal angles without prominent apex and
very abruptly though moderately reflexed, the puncture on the edge
unusually small; subbasal impression feebly subangulate; elytra
nearly three-fifths longer than wide, fully one-half wider than the
prothorax and subparallel, with arcuate sides and distinct humeri;
first and second striae feebly impressed but distinct, the others sub-
obsolete, except under oblique reflection; anterior fovea at two-
fifths; male with the basal joint of the anterior tarsi alone large,
internally prolonged. Length 2.1 mm.; width 0.75 mm. Northern

Illinois (Highland Park) sagax n. sp.

moderately convex, ventricose, the anterior parts relatively
small, shining, with feeble sericeous lustre, the micro-strigilation of
the elytra extremely fine and close; color very dark and uniform
castaneous throughout above; under surface rufo-piceous, the legs
flavate; head three-fourths as wide as the prothorax, the eyes rather
large, prominent, the sulci deep; antennae long and slender, black-
ish, the first three or four joints flavate, the second much longer
than either the first or third; prothorax rather less than one-half
wider than long, slightly narrower at base than at apex, the sides
rounded, finely reflexed, oblique and becoming very slightly sinuate
in about basal half, the angles obtuse, moderately reflexed; sides of
the base very oblique; subbasal impression deep; a rather deep elon-
gate impression near each side of the base is evident; elytra barely
one-half longer than wide, fully two-thirds wider than the prothorax,
slightly wider behind the middle than at base; first stria rather deep
and broad, the second much feebler, the others indistinct or wanting;
anterior fovea at two-fifths. Length 2.5 mm.; width i.o mm.
Texas (Austin) ventricosus Lee.

Body moderately convex, rather shining, especially the elytra, the close
strigilation of the pronotum and elytra extremely fine; color rufo-
testaceous, the head slightly infumate between the eyes, the elytra
sometimes slightly clouded except basally; legs pale flavate; head
two-thirds as wide as the prothorax, the eyes moderate in size, rather
prominent, the sulci deep, parallel; antennae piceous, gradually pale
basally, as long as the elytra, the second joint as long as the first,
much longer than the third; prothorax fully one-half wider than long,
the margins moderately reflexed, the basal angles strongly; base
distinctly narrower than the apex; sides rounded, oblique and straight
posteriorly, the angles obtuse and slightly blunt; subbasal impression
moderate, feebly angulate; elytra barely one-half longer than wide,
not quite one-half wider than the prothorax, subparallel, with arcu-
ate sides and rather broadly rounded humeri; pedicel two-fifths the
basal width; striation as in the preceding; anterior fovea at two-
fifths. Length 2.15—2.3 mm.; width 0.82 mm. Two examples from
the Levette collection, probably taken in Indiana gentilis n. sp.

1 1 — Prothorax always much less than twice as wide as long 12

198 MEMOIRS ON THE COLEOPTERA

Prothorax much shorter and more transverse, very nearly twice as wide
as long; species much smaller in size. Texas 19

12 — Elytra pale, with a large subcentral cloud or broad fascia; species
the largest of the genus 13

Elytra uniform in color throughout; species moderate in size 18

13 — Elytra more elongate, about twice as long as the head and prothorax
together. Body elongate-suboval, rather convex, moderately shin-
ing, blackish-piceous, the elytra flavo-testaceous, with a large cen-
tral piceous cloud, not attaining the sides; under surface nearly
black, the legs and epipleura pale flavate; "head very moderate in
size, with moderate but prominent eyes, the sulci deep, parallel, not
very remote; antennae slender, piceous, gradually pale basally, the
medial joints scarcely three times as long as wide; prothorax not
quite one-half wider than long, the sides rounded anteriorly, oblique
and nearly straight in about posterior half, the obtuse angles re-
flexed and feebly prominent, or thickened by the setigerous punc-
ture; subbasal impression deep, obtusely subangulate, the depressed
surface between it and the base longitudinally strigose; abbreviated
stria deeply impressed; elytra elongate-oval and nearly three-fifths
longer than wide, one-half wider than the prothorax, widest about
the middle, the sides arcuate; four or five striae are easily traceable,
the first and second deepest; anterior fovea near basal third. Length
2.4-2.8 mm.; width 0.9-1.1 mm. New Jersey to Indiana and Illi-
nois. Moderately abundant proximus Say

Elytra less elongate, never twice as long as the head and prothorax, more
oblong as a rule and sometimes rather less convex 14

14 — Head notably small, the prothorax large, with the sides distinctly
sinuate near the angles, being parallel for some distance; eyes no-
tably flattened. Form oblong-suboval, rather convex, shining, rufo-
testaceous, the head not so bright as the pronotum; elytra more
flavate, the central blackish cloud large, rounded and wholly discal;
under surface pale, the legs flavate; head barely three-fifths as wide
as the prothorax and very much narrower than an elytron, the sulci
rather narrow, deep and distant; antennae only moderately slender,
fuscous, paler basally, fully as long as the elytra; prothorax one-half
wider than long, the sides distinctly reflexed, rounded anteriorly,
oblique posteriorly, the angles reflexed, right and sharp, the sides
of the base toward the angles transverse, not oblique; subbasal im-
pression rather deep, subangulate; elytra barely one-half longer
than wide, scarcely two-fifths wider than the prothorax, oblong,
parallel, with rather strongly arcuate sides and moderately rounded
humeri; pedicel nearly half as wide as the base; stria? one and two
deep and strong, three to five feeble, though impressed; anterior
fovea at basal third. Length 2.8 mm.; width 1.15 mm. Rhode
Island (Boston Neck) rhodeanus n. sp.

Head relatively larger, the prothorax smaller and with the oblique sides
posteriorly never more than very faintly sinuate near the always
obtuse hind angles; base oblique at the sides; eyes moderate in size,
distinctly less flattened 15

BEMBIDIIN^E 199

15 — Prothorax pale testaceous, similar in color to the ground of the ely-
tra, the head dusky 16

Prothorax less abbreviated, darker, pale piceous, intermediate in color
between the nearly black head and the flavo-testaceous ground of
the elytra I?

1 6 — Frontal sulci deep anteriorly and there separated by barely more than
a third the maximum interocular width; eyes rather small and only
moderately prominent. Body oblong-suboval, moderately convex,
shining, the elytra but feebly sericeous; color testaceous, the broad
submedian blackish fascia very nubilous; under surface pale, the legs
flavate; head three-fourths as wide as the prothorax; antennae fla-
vate, as long as the elytra, the second joint very much longer than
the third; prothorax nearly one-half wider than long, the sides an-
teriorly strongly rounded, oblique and nearly straight posteriorly,
ihe obtuse angles with prominent apex, thickened by the rather
large setigerous pore; subbasal impression deep, angulate, the me-
dian stria distinct; elytra slightly more than one-half longer than
wide, not quite one-half wider than the prothorax, parallel, with
distinctly arcuate sides; first three striae more or less distinct, the
fourth and fifth feebly glimpsible; anterior fovea near two-fifths,
the posterior near apical sixth. Length 2.35-2.65 mm.; width 0.8-
0.95 mm. District of Columbia and North Carolina (Asheville).
Pennsylvania — LeConte scitulus Lee.

Frontal sulci shallow and more widely separated, more strongly micro-
reticulate than the rest of the surface; eyes much larger, conspicu-
ously prominent. Body rather more broadly oblong, very moder-
ately convex, shining, the elytra feebly sericeous; color pale testa-
ceous, the submedian fuscous fascia narrower, more feeble and still
more indefinite than in scitulus; under surface and legs very pale;
head fully three-fourths as wide as the prothorax; antennae long, slen-
der, pale flavo-testaceous, even somewhat longer than the elytra,
the second joint distinctly longer than the third; prothorax fully
one-half wider than long, formed as in scitulus, except that the pos-
teriorly oblique sides become slightly sinuate for a short distance
before the obtuse and reflexed angles, which are less prominent or
thickened at apex, the setigerous pore smaller; margins very dis-
tinctly reflexed; subbasal impression moderately deep, angulate, the
anterior obsolete as in scitulus, the stria distinct; elytra oblong, one-
half longer than wide, one-half wider than the prothorax, gradually
parabolic in apical two-fifths; sides feebly arcuate, the humeri
strongly rounded ; striation and foveae nearly as in scitulus. Length
2.55-2.65 mm.; width 0.9-1.0 mm. Iowa (Keokuk) and Mississippi
(Vicksburg) pallescens n. sp.

Frontal sulci as in ^pallescens, though slightly deeper, widely separated,
the eyes similarly prominent but not quite so large. Body slightly
shorter, oblong, moderately convex, similar in color and lustre, ex-
cept that the head is only very slightly fuscous across the vertex
and the submedial elytral fasciform cloud still fainter and more in-
definite, sometimes barely traceable; antennae flavate, not quite so
long, though as long as the elytra; head proportionally as in palles-

2oo MEMOIRS ON THE COLEOPTERA

cens; prothorax shorter and broader, two-thirds or more wider than
long, the sides, basal angles and impressions similar; elytra shorter,
scarcely more than two-fifths longer than wide, scarcely two-fifths
wider than the prothorax, more rapidly and subobtusely rounded
behind, the sides feebly arcuate; striation and foveae nearly similar;
five striae are easily discernible, the sutural stronger than the others.
Length 2.3-2.5 mm.; width 0.75-0.85 mm. Texas (Austin).

hyalinus n. sp.

17 — Body oblong-suboval, broad, rather convex, shining; elytra pale
yellowish-brown, with the faintest possible transverse cloud behind
the middle, even this sometimes wanting; under surface piceous-
black, the legs and epipleura flavate; head three-fourths as wide as
the prothorax, half as wide as the elytral base, the sulci deep, widely
separated; eyes moderate but rather prominent, the tempora behind
them a fourth as long and evenly continuing their outward curve to
the neck; antennae fuscous, with flavate basal joint, barely as long
as the elytra; prothorax scarcely one-half wider than long, widest
at anterior two-fifths, the sides arcuate, oblique and nearly straight
posteriorly to the reflexed, obtuse and not apically prominent angles;
margins finely reflexed anteriorly, gradually broadly so posteriorly;
subbasal impression deep, moderately arcuate; elytra broad, scarcely
one-half longer than wide, two-thirds wider than the prothorax,
rapidly ogival in posterior two-fifths, the sides arcuate; five striae
are distinctly observable, increasing in depth inwardly; anterior
fovea at basal third. Length 2.65-2.7 mm.; width i.o-i.i mm.
New York (near the city) temporalis n. sp.

Body suboval but less broad, shining, the head black; prothorax piceous,
the elytra pale brownish-flavate, with a very large central black
area, not attaining the sides, somewhat as in proximus; under sur-
face black, the legs and epipleura flavate; head nearly four-fifths as
wide as the prothorax, much more than half as wide as the elytral
base, the sulci deep, with convex intermediate surface, moderately
separated; eyes and tempora as in the preceding; antennae rather
longer than the elytra, fuscous, paler basally; prothorax two-fifths
wider than long, the rounded sides becoming oblique and straight
posteriorly, very feebly sinuate near the reflexed obtuse angles;
anterior impression evident, the subbasal deep, broadly arcuate,
the median stria connecting them deep and conspicuous; elytra
scarcely one-half longer than wide, two-thirds wider than the pro-
thorax, ogival in apical two-fifths, slightly wider behind the middle
than at base; sides arcuate, the humeri rather broadly rounded;
pedicel less than one-half the basal width; first and second striae dis-
tinct, the third feeble, the others obsolete; anterior fovea rather
before basal third. Length 2.6-2.75 mm.; width 0.9-1.0 mm.
Mississippi (Vicksburg) nubifer n. sp.

1 8 — Form not broadly suboval, rather convex, shining, the head black-
ish, the pronotum rufo-piceous, the elytra pale rufo-testaceous,
feebly clouded with piceous, except broadly toward base and some-
times at apex; under surface rufo-piceous, the legs flavate; head well
developed, fully three-fourths as wide as the prothorax and sub-

BEMBIDIIN/E 201

equal in width to an elytron; sulci short, rather deep; eyes very
moderate but prominent, their outline continuing to the neck and
without intervening tempora; antennae fuscous, paler basally, mod-
erately slender, as long as the elytra; prothorax short, evidently
more than one-half wider than long, the sides well reflexed, broadly
arcuate, moderately oblique and straight posteriorly, the angles ob-
tuse, reflexed and very slightly prominent; sides of the base strongly
oblique; anterior impression slightly visible at the middle, the sub-
basal deep, broadly angulate; elytra one-half or more longer than
wide, two-fifths wider than the prothorax, ogivally rounding in
nearly apical half, barely at all wider behind the middle than at
base, the sides arcuate; pedicel two-fifths as wide as the base; first
and second striae deeply impressed and subequal, the third fine and
very feeble, the others obsolete except basally; anterior fovea at
basal third to two-fifths. Length 2.0-2.5 nim.; width 0.7-0.88 mm.
New York (Willets Point, Long Island). Not uncommon.

obliquus n. sp.

Form more broadly oblong-oval, rather less convex, shining, the elytra
with feeble sericeous lustre; upper surface blackish-piceous through-
out, beneath blackish, the epipleura and legs pale; head relatively
not so large as in the preceding, three-fourths as wide as the pro-
thorax but distinctly narrower than an elytron, the eyes noticeably
larger and still more prominent; antennae more slender, dusky, fully
as long as the elytra; prothorax in outline and structure as in obli-
qiins but not quite so abbreviated, one-half wider than long; base
sometimes a little narrower than the apex; elytra broader and rather
less convex, one-half longer than wide and two-fifths wider than the
prothorax, nearly similar in outline and striation. Length 2.2-2.5
mm.; width 0.8-0.92 mm. Rhode Island (Boston Neck). Abun-
dant. New York — LeConte. [Tachys corrnscus Lee.].

coruscus Lee.

Form oblong-suboval, very moderately convex, shining, the elytra sub-
aeneo-sericeous; color as in coruscus; head scarcely three-fourths as
wide as the prothorax and not quite as wide as an elytron, the sulci
deep, parallel, moderately distant; eyes well developed and prom-
inent as in coruscus; antennae similarly slender but shorter, not quite
as long as the elytra, blackish, with paler basal joint, the medial
joints not quite three times as long as wide; prothorax as in corus-
cus but less abbreviated, two-fifths wider than long, the obtuse
basal angles similarly reflexed but not at all prominent; side mar-
gins more finely reflexed; base fully as wide as the apex, sometimes
a little wider; elytra nearly as in coruscus in form and proportion;
first stria deep, the second nearly as distinct, the third fine but ob-
servable, the others very feebly and only partially glimpsible; an-
terior fovea near basal third. Length 2.0-2.4 nim.; width 0.7-0.83
mm. Mississippi (Vicksburg) aeneipennis Mots.

19 — Body oblong-suboval, rather depressed and shining, the elytra with
feeble sericeous lustre; color uniform reddish-castaneous throughout
above, the head black; under surface piceous-black, the legs and epi-
pleura flavate; head well developed, as wide as an elytron and four-

2O2 MEMOIRS ON THE COLEOPTERA

fifths as wide as the prothorax, the sulci widely diverging poste-
riorly, feebly convergent anteriorly; eyes notably large, very prom-
inent; antennse as long as the elytra, piceous, the basal joint flavate;
prothorax three-fourths wider than long, widest at apical third, the
sides there evenly rounded, oblique and straight in somewhat more
than basal half, the angles obtuse, reflexed and blunt at apex; sub-
basal impression rather deeply impressed, angulate; elytra fully one-
half longer than wide, somewhat more than one-half wider than the
prothorax and subcircularly rounded in apical third, parallel, with
slightly arcuate sides and abruptly rounded humeri; all five striae
are distinct to feeble; foveae strong, near two-fifths and five-sixths.
Length 2.0 mm.; width 0.8 mm. Texas (El Paso). A single exam-
ple taken by the writer spadix n. sp.

Body oblong-suboval, moderately convex, shining, uniformly castaneous-
brown, the head a little darker; under surface dusky testaceous, the
legs and epipleura flavate; head well developed, t(hough scarcely as
wide as an elytron, three-fourths as wide as the prothorax, the sulci
as in spadix; eyes relatively even larger, very prominent; antennse
fuscous, the basal joint flavate, slightly longer than the elytra; pro-
thorax shorter and broader, very nearly twice as wide as long, the
sides rather widely reflexed, broadly rounded, gradually very mod-
erately oblique and straight behind, the reflexed angles very obtuse
and blunt, the subbasal impression deep, broadly angulate; elytra
shorter, barely wider behind the middle than at base, barely one-half
wider than the prothorax and rather less than one-half longer than
wide; apex ogivally rounded; sides feebly arcuate, the humeri nar-
rowly rounded; first and second striae distinct, the third subobsolete,
more evident and widely impressed basally, the others obsolete; an-
terior fovea deep, at three-sevenths. Length 1.82 mm.; width 0.8
mm. Texas (Houston). A single example taken by the writer.

laxicollis n. sp.

Body narrower, still smaller, moderately convex and shining, pale-flavo-
testaceous in color throughout, the head piceous-black; legs pale
flavate; head relatively still larger, with large and very prominent
eyes, fully four-fifths as wide as the prothorax and somewhat wider
than an elytron; sulci anterior and moderate, the posteriorly diver-
ging part very fine: antennae fuscous, with flavate basal joint, slen-
der, as long as the elytra, the second joint even somewhat longer
than the first, one-half longer than the third; prothorax a little more
than one-half wider than long, the sides subevenly, not strongly
rounded anteriorly, feebly oblique and straight posteriorly, the ob-
tuse and blunt angles well reflexed, the anterior angles rounded as
usual; subbasal impression deep, subarcuate, the surface between
it and the basal margin swollen; elytra parallel, with evenly and mod-
erately arcuate sides, slightly more than one-half longer than wide
and rather less than one-half wider than the prothorax. almost cir-
cularly rounded in apical third, the humeri narrowly rounded;
striae one to four visible, gradually decreasing in depth; anterior
fovea near two-fifths. Length 1.75-1.8 mm.; width 0.65 mm.
Texas (Brownsville), — Wickham. Three specimens, .vernilis n. sp.

BEMBIDIIN/E 203

The species above described as pumilus Dej., fits the meagre
description very well, especially in the darker opalescent posterior
cloud on the elytra, which is also alluded to by Chaudoir as a dis-
tinctive feature; but its locality is rather remote from Louisiana,
this being of but little moment however, as no locality for pumilus
is given by Dejean, and it may just as well have been Florida as
Louisiana. Appalachius, because of the much larger head and pro-
thorax, is in al] probability a species distinct from cuneatus, but,
as it is represented only by a single individual, it may be left in
subordinate rank for the present.

The two Panama species included above, seem to be different
from anything described by Motschulsky; beaumonti resembles
flaincollis in some respects, but the elytral cloud is sutural in the
latter, and the length and width as given by the author are very
much less, being 1.5 by 0.6 mm. The author also states that in
flavicollis the frontal sulci approach each other anteriorly.

The species allied to proximus and scitulus have been somewhat
misunderstood and confused in nearly all collections, but they are
really well differentiated. For example, proximus itself is an iso-
lated species, not closely related to any other by reason of its regu-
larly oval and very elongate elytra, larger size, notably convex
surface and by the central elytral blackish plaga not attaining the
sides, and therefore not having the form of a fascia as it has in
scitulus. Nubifer has an identical coloration and form of the cen-
tral plaga, but the elytra differ very much, being shorter and broader
and the prothorax is relatively much larger. Scitulus, pallescens
and hyalinus are allied species, forming a coherent group of a differ-
ent type from proximus, having an elytral cloud-like fascia from
side to side, becoming almost obsolete in hyalinus; this and palles-
cens differ from scitulus in the more widely separated frontal sulci,
much larger and more prominent eyes and more pallid general col-
oration; scitulus is confined to the Atlantic slope of the Appa-
lachians, pallescens to the Mississippi Valley and hyalinus to cen-
tral Texas, so far as now known. Rhodeanus is a remarkably dis-
tinct species in its small head, with flattened eyes and relatively
large prothorax, having the sides of the base transverse and not
oblique as in all the other species, and in the sharp right basal
angles. Temporalis is also well differentiated by its very ventri-

204 MEMOIRS ON THE COLEOPTERA

cose outline, convex surface, almost obsolete dark elytral plaga and
by the form of the eyes and tempora; its nearest relative is the
smaller and less ventricose nubifer, from more southern latitudes.
There are before me two specimens that I fail entirely to compre-
hend. They are of an intense shining black throughout and, in
outline and striation, much resemble nubifer or temporalis. I have
had occasion before (Mem. Col., V, 1914, p. 299) to call attention
to entirely deep black specimens, in that case belonging to the genus
Agonoderus. Whether this condition is pathologic or not it is im-
possible to surmise; they were all, both Tachys and Agonoderus,
found unlabeled in the Levette collection, but do not appear to
have been stained, either by accident or otherwise. I should be
much interested to know whether others have observed anything
similar.

Group II — vittiger
Subgenus Isotachys nov.

The somewhat less numerous species of this very distinct group,
are distinguished from those of Tachys proper primarily by the
position of the dorsal foveae of the elytra, which here are on or
attached to the inner side of the third stria; they also differ very
much in having the second and third joints of the antennae equal
in length, the sides of the prothorax less reflexed, the frontal sulci
less distinct and in the narrower, more parallel form of the body.
The base of the prothorax, instead of being generally oblique at the
sides as in Tachys, is here transverse usually, with the angles right;
but there are exceptions in both subgenera in regard to this feature.
The recurved part of the sutural stria is almost exactly as in the
true Tachys, and the posterior fovea is likewise more or less near
and within the hamate anterior limit of the recurvature.

Some of the described species are not at present in my collection,
but such as are represented before me may be rather easily differ-
entiated as follows:

Base of the prothorax transverse and straight laterally 2

Base oblique at each side 9

2 — Color deep black, the elytra sometimes vittate 3

Color not black 4

3 — Body elongate, parallel, moderately convex, shining, deep black, the
elytra each with a wide flavate vitta outside the axial line, from base
to apical fifth, reduced in some individuals and frequently wholly

BEMBIDIIN^E 205

wanting; under surface black, the legs flav'ate; head micro-reticulate,
well developed, the eyes rather large and prominent, the sulci mod-
erate, parallel, widely separated; antennae piceous, paler at base,
nearly three-fourths as long as the elytra, the medial joints fully
twice as long as wide; prothorax not quite one-half wider than long,
nearly as wide at base as at apex, the sides evenly rounded, becom-
ing gradually less so and more oblique posteriorly, sinuate at base,
the angles right, sharp and feebly reflexed; anterior impression ob-
solete, the subbasal fine, sulciform, finely punctate and obtusely
angulate, the stria feeble; surface without distinct ground sculpture;
elytra elongate, fully three-fifths longer than wide, two-fifths wider
than the prothorax, rounded in rather less than apical third, the
sides parallel and nearly straight; humeri sharply rounded; base
truncate; first stria deep, the second less deep, the third very feeble;
anterior fovea at three-sevenths; ground sculpture of transverse
micro-reticulation not so fine or strigiliform as in Tachys proper,
the lustre therefore not sericeous. Length 2.25-2.65 mm.; width
0.68-0.8 mm. California (San Diego). Abundant. . . .vittiger Lee.
Body smaller, elongate, deep black and shining throughout; legs black,
the tibiae and tarsi piceous; ground sculpture as in vittiger, except
that the micro-reticulation of the pronotum is nearly as strong as
that of the head and that of the elytra even coarser than in vittiger;
head smaller, scarcely three-fourths as wide as the prothorax and
somewhat narrower than an elytron; sulci very broad, parallel, the
eyes smaller than in vittiger, similarly nude as usual; antennae black
throughout, much shorter than in the preceding, barely two-thirds
as long as the elytra, the medial joints barely one-half longer than
wride; prothorax one-half wider than long, even somewhat wider at
base than apex, widest even less anteriorly than in vittiger, the sides
more broadly, subevenly rounded, straight basally, the angles slightly
obtuse and minutely subprominent at tip; sides of the base trans-
verse and straight; subbasal groove fine, rugose, broadly subangu-
late; elytra but little over one-half longer than wide, barely a third
wider than the prothorax, the outline as in vittiger, except that the
parallel sides are slightly arcuate and the humeri somewhat less ab-
ruptly defined; first two striae rather deep, especially the first; be-
yond the second only occasional glimpses of fine striae are obtain-
able; anterior fovea at three-sevenths. Length 2.2-2.5 mm.; width
0.7-0.85 mm. Utah (Provo), — Wickham. Four examples.

funebris n. sp.
4 — Reflexed elytral margin crenate or serrulate for a short distance behind

the humeri; disk of the elytra not paler laterally 5

Reflexed margin smooth, without trace of post-humeral serrulation; disk
of the elytra with paler marking laterally, except apparently in

occultator 8

5 — Tips of the elytra flavate 6

Tips of the elytra concolorous, not at all flavate 7

6 — Form rather narrow, parallel, moderately convex and shining, the head
distinctly, the pronotum feebly, micro-reticulate, the elytra with
finer sculpture in transversely broken lines; color rufous, the elytra

206 MEMOIRS ON THE COLEOPTERA

dark castaneous, with flavate apex; under surface obscure rufous,
the legs flavate; head nearly four-fifths as wide as the prothorax,
with very moderate but prominent eyes and feeble remote sulci;
antennae short, fusco-testaceous, paler basally, two-thirds as long
as the elytra, the medial joints barely twice as long as wide; prothorax
three-fifths wider than long, somewhat narrower at base than at
apex, the sides broadly rounded, becoming rapidly sinuate and par-
allel in basal fifth, the angles acute, not reflexed but prominent, the
seta distinctly before the angles; subbasal sulcus fine, feeble, sub-
punctate, the margin feebly tumid; elytra two-thirds longer than
wide, two-fifths wider than the prothorax, the parallel sides barely
visibly arcuate, the humeri sharply rounded; apex not obtuse; pedi-
cel two-fifths the basal width; first and second striae subequal and
distinct, the others barely glimpsible, the anterior fovea at three-
sevenths. Length 2.25 mm.; width 0.75 mm. New Jersey (At-
lantic City) litoralis Csy.

Form stouter, rather convex, more shining, clearer rufous in color almost
throughout, the apex more flavate, with a piceous shading immedi-
ately adjoining the flavate area; under surface and legs testaceous;
head and pronotum much more feebly micro-reticulate; head rela-
tively smaller, fully two-thirds as wide as the prothorax, the eyes
nearly similar but not quite so prominent; sulci still feebler; antennae
longer, three-fourths as long as the elytra, fusco-testaceous, more
flavate basally, the sixth joint fully twice as long as wide or some-
what more; prothorax as in litoralis, but less abbreviated and with
the basal angles simply right, sharp but not prominent, the subbasal
sulcus still finer and with the surface between it and the base flat;
elytra broader, one-half longer than wide, nearly one-half wider
than the prothorax, more obtusely rounded behind but otherwise
almost similar in outline; first and second striae coarser, more deeply
impressed, the third and fourth fine and feeble but distinctly obser-
vable; the type specimen has no trace of the anterior fovea on either
elytron. Length 2.35 mm.; width 0.85 mm. Virginia (Fortress
Monroe) omissus n. sp.

7 — Form similar but a little more abbreviated, oblong, rather convex,
shining, the ground sculpture nearly as in the preceding, that of the
elytra stronger; color dark rufous, the elytra very slightly castan-
eous; under surface and legs dark, though pure, rufous; head as in
omissus but a little larger and with slightly more prominent eyes,
fully three-fourths as wide as the prothorax, the antennae similar,
the fifth joint fully twice as long as wide; prothorax shorter, fully
three-fifths wider than long and as wide at base as at apex, the sides
less inflated and more feebly rounded, becoming feebly sinuate only
at, and not well before, the sharp right angles; margins similarly
narrowly reflexed and also with very fine median stria, the subbasal
sulcus finer and still feebler; elytra still shorter, barely one-half
longer than wide, similar in the general outline and obtuse apex, the
parallel sides very feebly arcuate, the humeri narrowly rounded,
two-fifths wider than the prothorax; first and second striae broadly
and deeply impressed and subequal in depth, three to five barely

BEMBIDIIN^E 207

glimpsible; anterior fovea at three-sevenths. Length 2.33 mm.;
width 0.83 mm. Texas (Galveston). Two examples.

luridicollis n. sp.

Form oblong, somewhat smaller and relatively stouter than in the pre-
ceding, shining, similar in color and ground sculpture, but with the
head slightly infuscate and the elytra piceous-black; head nearly
similar, relatively larger than in omissus, the eyes moderate, rather
prominent; antennae piceo-testaceous, flavate basally, shorter than
in the preceding, barely two-thirds as long as the elytra, the fifth
joint distinctly less than twice as long as wide; prothorax almost
exactly as in luridicollis and fully as wide at base as at apex, but
with the sides sinuate at a greater distance from the base, becoming
parallel in basal fifth or sixth, the angles right and very sharp; elytra
scarcely one-half longer than wide, two-fifths wider than the pro-
thorax, parallel, with feebly arcuate sides, the humeri even more
narrowly rounded than in the preceding species; apex broadly, ob-
tusely rounded; striation and foveae as in the preceding. Length
2.2 mm.; width 0.78 mm. Mississippi (Pass Christian).

torrescans n. sp.

8 — Body stout, subparallel, rather convex and shining, the head dis-
tinctly, the pronotum very obsoletely, micro-reticulate, the trans-
verse reticulation of the elytra finer, closer and more strigiliform
than in the preceding-section; color bright rufous, the head deeply
infumate, the elytra piceous, each with a large elongate irregular
external flavate spot in basal half and a smaller one near apical
fourth; under surface rufous, the abdomen black, the legs rufous;
head three-fourths as wide as the prothorax, with moderately large
and rather prominent eyes, the sulci feeble and remote; antennae
fuscous, paler basally, three-fourths as long as the elytra, the' fifth
joint fully twice as long as wide; prothorax one-half wider than long,
about equally wide at base and apex, the sides strongly, subevenly
rounded to a basal parallel part of about a sixth or seventh the total
length; angles right, very sharp and more reflexed than in the pre-
ceding section, but with the puncture on the edge similarly in ad-
vance of the angle; subbasal groove fine, impressed, being a chain of
irregular punctures, the basal surface flat; elytra four-sevenths longer
than wide, two-fifths wider than the prothorax, parallel, with feebly
arcuate sides and moderately distinct humeral angle, evenly para-
bolic in apical third; first stria rather strong, the second finer and
beyond with barely any trace of striation; anterior fovea barely
visibly in front of the middle. Length 2.4—2.6 mm.; width 0.8—0.9
mm. Texas (Galveston). [Tachys occultator Hayw. nee Csy.].

pugnax n. sp.

Body stout, subparallel, rather convex., shining, similar to pugnax in the
minute ground-sculpture and general form, but with relatively much
smaller prothorax; color of the head piceous, of the prothorax bright
rufous, of the elytra castaneous, with the entire sides broadly and
nubilously flavate, most broadly so in basal half; under surface
rufous, the abdomen nearly black, the legs flavate; head four-fifths
as wide as the prothorax, the eyes rather more prominent than in

208 MEMOIRS ON THE COLEOPTERA

the preceding; antennas fuscous, paler basally, much longer than in
pugnax. four-fifths as long as the elytra, the fifth joint two and one-
half times as long as wide; prothorax in form nearly similar, but
somewhat less arcuate at the sides, which are similarly parallel at
base, the very sharply rectangular angles likewise minutely sub-
prominent; surface as in pugnax; elytra as in the latter, except that
they are at least three-fifths wider than the prothorax and not over
one-half longer than wide; humeri more widely exposed at base;
striae similar, the fovea at the middle. Length 2.5 mm.; width 0.9
mm. Texas (Brownsville), — Wickham subtropicus n. sp.

Body in form somewhat as in the two preceding; color reddish-testaceous,
the head nearly black; elytra apparently without lateral pallidity;
under surface rufous, the abdomen blackish; legs pale; head moder-
ate in size, the eyes somewhat prominent; antennas about as long
as the head and prothorax, the latter but slightly wider than the
head, one-half wider than long; sides arcuate, feebly sinuate at
base, the angles prominent and sharp; base very slightly narrower
than the apex; scutellum slightly longer than wide; elytra wider
than the prothorax, obtusely rounded behind, the first stria strong,
the second feeble, the third faintly traceable; anterior fovea at the
middle; abdomen sparsely clothed with erect pubescence toward
tip, the last segment with four equidistant setae at apex. Length
2.8 mm. New Jersey (Cape May) occultator Csy.

9 — Form rather stout, oblong, rather convex, highly polished, piceous-
black, the elytra sometimes nubilously rufescent along the suture
toward base; under surface piceous, the abdomen black; legs and
epipleura flavate; head medially and the pronotum without minute
ground-sculpture, the elytra with transverse wavy reticulation; head
two-thirds as wide as the prothorax, with very moderate but prom-
inent eyes, the sulci irregular, distant; antennae flavo-testaceous,
nearly four-fifths as long as the elytra, the fifth and sixth joints dis-
tinctly more than twice as long as wide, the second thicker and very
slightly longer than the third; prothorax three-fifths wider than
long, the sides broadly rounded, oblique and straight basally to the
obtuse reflexed angles; base as wide as the apex; subbasal sulcus
deep and arcuate, the surface between it and the base tumid; elytra
barely one-half longer than wide, about two-fifths wider than the
prothorax, obtusely rounded behind, parallel, with broadly arcuate
sides and moderately rounded humeri, the pedicel two-fifths the
basal width; first and second striae well impressed, subequal in depth,
two or three external to the second vaguely observable; anterior
fovea at two-fifths to three-sevenths. Length 2.0-2.4 rnm.; width
0.75-0.88 mm. Texas (Galveston). Nine specimens.

bradycellinus Hayw.

Form slender, narrower than any other species, deep black and shin-
ing, the legs obscure, the femora blackish; micro-reticulation dis-
tinct throughout, transversely wavy and unusually coarse on the
elytra; head fully four-fifths as wide as the prothorax, the sulci
feeble and very remote; eyes rather small, only very slightly convex;
antennae short, fuscous, three-fifths as long as the elytra, the medial

BEMBIDIIN.E 209

joints one-half longer than wide; prothorax a little less than one-half
wider than long, the sides broadly, subevenly rounded and finely
reflexed almost throughout, becoming very faintly sinuate toward the
slightly obtuse angles, the apices of which are minutely acute and
prominent, only slightly reflexed, the seta on the edge very little in
advance of the angle; subbasal stilcus rather fine, deep, the surface
thence to the base slightly tumid; elytra fully three-fourths longer
than wide, scarcely over a third wider than the prothorax, circularly
rounded in barely apical third, the parallel sides just visibly arcuate;
pedicel less than half the basal width; first and second striae very
shallow, feeble, subequal in depth, the others not observable; an-
terior fovea small, at three-sevenths. Length 2.2 mm.; width 0.62

mm. California (San Diego) esurialis n. sp.

Form shorter and stouter than in the preceding, oblong-suboval, moder-
ately convex, shining, micro-reticulate, black to piceous in color, the
legs piceous; head distinctly narrower than the prothorax, the eyes
well developed and prominent; antennae slender, piceous, fully three-
fourths as long as the elytra, the medial joints twice as long as wide;
prothorax somewhat more than one-half wider than long, equally
wide at base and apex, the sides moderately rounded, oblique and
nearly straight posteriorly, the angles obtuse, slightly prominent at
tip and distinctly reflexed; subbasal impression deep, sulciform;
median stria well impressed; elytra barely one-half longer than wide,
about one-half wider than the prothorax, evenly parabolic in apical
third, the parallel sides feebly arcuate; striae one to three or four
detectible, though feeble even near the suture; anterior fovea slightly
ante-median. Length 2.2 mm.; width 0.78 mm. California (Yuma
Reservation; two females taken by the writer) and Utah (south-
western; one female taken by Mr. YVeidt) corax Lee.

It is possible that the species described above under the name
funebris, may be one of those confounded with corax by Hayward,
but, though the basal angles of the prothorax are more than right,
their apex is more acutely prominent, and the sides of the base
seem to be truly transverse and not oblique, as they are very ob-
viously in corax; besides this, the entire form of the body is strik-
ingly different, funebris being parallel, with the elytra but slightly
wider than the prothorax.

The four species from litoralis to torrescans constitute a well dif-
ferentiated section of the subgenus, characterized, among other
ways, by the feebly serrate or crenulate margin of the elytra toward
the humeri; litoralis bears no resemblance in any particular to the
much larger — 3 mm. — pallidus of Chaudoir, to which it was as-
signed by Horn, followed by Hayward, although pallidus, because
of its general characters, probably belongs to the subgenus Isotachys.
T. L. Casey, Mem. Col. VIII, Oct. 1918.

2io MEMOIRS ON THE COLEOPTERA

The next three species, pugnax, subtropicus and occultator, also
constitute a well marked section. The type of occultator no longer
being in my collection, I have been compelled to cull the above
characterizations from the original lengthy genera-specific descrip-
tion (Cont. Descr. and Syst. Col. N. A., II, p. 69), the greater part
of the verbiage being .superfluous. I consider occultator to be dif-
ferent from pugnax, which was one of the forms included under
that name by Hayward. In pugnax the last ventral segment of
the male is smooth, with two apical setae; in the female the surface
of the last segment has fine sparse punctures throughout, each bear-
ing an infinitesimal erect hair, and the apex has four setae — these
being the usual conditions in the subgenus.

The type of esurialis seems to be a female, and I have associated
with it for the present, a second female, which agrees in almost all
characters, except that the body is notably less slender, with broader
head, larger pro thorax, slightly more convex eyes and shorter ely-
tra, these being but little more than one-half longer than wide;
but the peculiarly short antennae are similar in both examples, and,
in looking over a large series of vittiger, correspondingly striking
individual differences occur. The two examples associated above to
represent corax Lee., also differ perceptibly, for, besides the deep
black body and blacker femora of the Utah specimen, it has the head
evidently smaller and the elytra rather more elongate than the two
examples from Yuma; but, having no accurate knowledge of the
type, I am obliged to call them both corax. I have seen no indi-
cation of the elytral vitta noted by Hayward as visible in certain
individuals of corax.

In' species having the basal thoracic angles obtuse and the sides
of the base oblique, the posterior seta on the upturned edge is often
at or very close to the angle, as in bradycellinus for instance, and
not far in advance of the angle as it is in litoralis and allied forms
having sharp right angles.

Group III — Icevus
Subgenus Microtachys nov.

Although allied in some respects to the corax section of Isotachys,
especially in the obtuse basal angles of the prothorax and oblique
sides of the base, as well as in the position of the elytral foveae on,

BEMBIDIIN^E 211

or just inside of, the third stria, the few known species of this group
differ radically in the peculiarly short moniliform antennae and in
having the apical recurvature of the sutural stria very short. It
results from this, that the posterior fovea, not being behind the
hooked end of the recurvature, as it is in Tachys and Isotachys, has
a position more anterior and more conformable to its usual position
in the Bembidiinae. The Icevus group differs from any other of the
allies of Tachys in the very minute size of the body, and it includes
some of the smallest known Carabids.* The eyes are small or
moderate, and the frontal sulci are reduced to small and feeble,
widely separate, anterior impressions; the surface is moderately
convex and is nearly always distinctly micro-reticulate, though never
distinctly dull in lustre. The second antennal joint is very much
longer than the third, even more strikingly so than in Tachys
proper, and in this respect it differs greatly from Isotachys. The
last segment of the outer maxillary lobe is extremely slender.

After reading carefully the description of the very much larger
Tachys trechiformis of Hayward, which the author includes in the
Icevus group, I am convinced that it does not belong there, but should
form a separate subgeneric group of the genus. Rufotestaceus is
also an aberrant species, which, unlike any of the others, is Sonoran
in habitat; it is especially peculiar in the sinuate sides of the pro-
thorax basally and in having four punctulate discal striae. I ob-
tained a single example at its extreme eastern limit of distribution
in Texas.

The species of Microtachys, so far as known to me, may be de-
scribed as follows:

Elytra with but one or two distinct striae 2

Elytra with four subequal and slightly punctulate striae; hind angles of

the prothorax sharper, better defined by a short feeble sinus 6

2 — Hind body short, broadly oval, the elytra but little longer than wide.
Surface rather notable convex, shining, piceous-black, the prothorax
faintly rufous; under surface and legs obscure rufous, the abdomen
black; head feebly, the pronotum very obsoletely, micro-reticulate,

* The remarkable Polyderis minuscula of Motschulsky (Etudes, 1862, p. 36) is said
to be only 0.8 by 0.2 mm. in dimensions, which, if correct, would indicate it to be
by far the most minute Carabid known. Typical Polyderis is said by Bates to be
nothing more than Tachys, but, as Motschulsky included diverse elements in his
conception of Polyderis, it is probable that that disposition of it is not strictly final;
minuscula, however, is too small for even Microtachys. Scotodipnus also includes
very minute species, some of them probably smaller than any known Microtachys.

212 MEMOIRS ON THE COLEOPTERA

the elytra rather closely reticulate in transverse broken lines; head
convex, nearly three-fourths as wide as the prothorax, the eyes small,
prominent, feebly setulose; antennae slender, fuscous, paler basally,
moniliform, barely two-thirds as long as the elytra; prothorax one-
half wider than long, equally wide at base and apex, the sides strongly
rounded anteriorly, oblique and straight behind, the angles obtuse
but not rounded, feebly reflexed; subbasal sulcus deep, angulate,
the anterior impression broad and obvious, the stria fine; elytra
two-fifths longer than wide, two-thirds wider than the prothorax,
oval, with arcuate sides becoming straight basally, much wider just
behind the middle than at base, the humeri obtuse; edge near and
around the humeri bearing a series of minute erect setae; sutural
stria deep and distinct, the second fine and feeble; foveae near basal
and apical third. Length 1.2—1.4 mm.; width 0.45—0.55 mm. Vir-
ginia (Norfolk). Five examples congestus n. sp.

Hind body longer, not so broadly oval 3

3 — Body elongate-oval, strongly convex, the integument rather thicker
and firmer than usual. Color bright testaceous throughout, the
head barely darker, the surface shining, the ground sculpture nearly
as in the preceding; head two-thirds as wide as the prothorax, convex,
the anterior impressions feeble; eyes small, not prominent, feebly
setulose; antennae fusco-testaceous, scarcely three-fifths as long as
the elytra; prothorax formed nearly as in the preceding, the sides
less strongly and more broadly rounded, straight only near the very
obtuse but bluntly subprominent angles, the sides of the base no-
tably oblique; subbasal impression deep, angulate, the anterior obso-
lete, the median stria fine; elytra notably long, almost evenly oval,
widest at the middle, parallel, with arcuate sides, two-thirds longer
than wide, only two-fifths wider than the prothorax; pedicel slightly
less than half the basal width; minute erect setae of the edge at and
behind the humeri marking a very feeble serrulation; sutural stria
rather deep, none other evident; foveae minute, near basal and apical
third. Length 1.2-1.3 mm.; width 0.35-0.45 mm. Pennsylvania.

unistriatus n. sp.

Body more oblong, not so convex, sometimes distinctly depressed, the
integument thinner as a rule 4

4 — Elytra long, parallel, but little wider than the prothorax. Body
elongate, moderately convex, subparallel, pale brownish-testaceous
in color throughout, shining, the pronotum without ground sculp-
ture, the reticulation of the elytra fine and strigiliform; head three-
fourths as wide as the prothorax, the eyes small, nude and prom-
inent; antennae fuscous, paler basally, scarcely three-fifths as long
as the elytra; prothorax short, two-thirds wider than long, fully as
wide at base as at apex— if not somewhat wider, the sides moder-
ately rounded anteriorly, oblique and straight in about basal half,
the angles obtuse, blunt, the sides of the base oblique; seta placed
at the angle as usual in 'this group; subbasal sulcus deep, angulate,
the anterior impression visible medially; elytra nearly three-fourths
longer than wide, a third wider than the prothorax, evenly parabolic
in fully apical third, the parallel sides feebly arcuate, the humeri

BEMBIDIIX.E 213

right and sharply rounded, the edge nearly as in the preceding;
sutural stria moderate, the second very fine, the others obsolete;
foveae near basal and apical third as usual. Length 1.2 mm.; width
0.4 mm. Louisiana (Alexandria) rectus n. sp.

Elytra not so long, feebly inflated posteriorly, wider behind the middle
than at base 5

5 — Form oblong, slightly convex, shining, piceous to testaceous, the pro-
thorax always paler and having the micro-reticulation perceptible
though feeble; head two-thirds as wide as the prothorax, the eyes
very small, slightly prominent, feebly setjgerous; antennae fuscous,
paler basally, short as usual; prothorax one-half or more wider than
long, the sides rounded, oblique and straight posteriorly, generally
very feebly sinuate at the obtuse but not rounded angles, rendered
slightly prominent by the well developed setigerous pore on the edge;
anterior impression distinct medially, the subbasal sulciform and
angulate; elytra scarcely one-half longer than wide, about two-fifths
to one-half wider than the prothorax, the sides broadly arcuate,
straighter basally; humeri slightly obtuse and moderately rounded;
sutural stria deep and distinct; beyond this one or two fine and feeble
stride can usually be detected; foveae behind basal and behind apical
third. Length 1.1-1.25 rnm.; width 0.35-0.4 mm. Rhode Island
to Missouri, North Carolina, Mississippi and Texas (Galveston).
Abundant. [Bemb. troglodytes Dej.] laevus Say

Form as in ICEVHS but not so small in size, moderately convex, piceous-
black, with dark red prothorax, shining, the sculpture similar; under
surface black, paler anteriorly, the legs flavate, short and slender as
usual; head rather large, more than three-fourths as wide as the pro-
thorax, the eyes very small but prominent; antennae a little longer
though similarly moniliform, nearly three-fourths as long as the
elytra; prothorax one-half wider than long, the anteriorly rounded
sides becoming oblique and straight in nearly basal half, with a very
small sinus adjoining the very obtuse and prominently rounded
angles, the anterior impression subobsolete, the posterior as usual;
elytra as in Icevus but rather longer, fully one-half longer than wide,
at base slightly, behind the middle fully, two-fifths wider than the
prothorax; sutural stria coarse and deep; beyond this there are two
or three other fine and feeble striae; foveae at basal and apical third.
Length 1.3—1.35 mm.; width 0.45—0.5 mm. Mississippi (Vicksburg).
Four specimens flumenalis n. sp.

Form and size as in the preceding but more depressed and paler in color,
pale brown, the prothorax rufous; under surface nearly black pos-
teriorly, the legs obscure flavate; sculpture similar; head similarly
well developed, the eyes small and prominent; antennae two-thirds
as long as the elytra ; prothorax as in. flumenalis in outline, impressions
and form of the hind angles; elytra nearly similar but narrower, and
except that the second stria is almost as distinct as the first, the third
also evident, the minute erect hairs on the edge near the humeri
and the very feeble serration as in all the preceding species; posterior
part of the lateral groove very irregular, the basal part obsolete and
represented by three setigerous fovese as usual in the subgenus.

214 MEMOIRS ON THE COLEOPTERA

Length 1.25-1.3 mm.; width 0.43-0.48 mm. Texas (Austin). Three

specimens diaphanus n. sp.

6 — Body oblong, subparallel, depressed, shining, feebly micro-reticulate
as usual; color pale flavo-testaceous throughout; head rather less
than three-fourths as wide as the prothorax, the anterior impressions
evident, the eyes larger than in any other species but only moder-
ately convex; antennae slender, flavate, longer than in any of the
preceding though submoniliform, nearly three-fourths as long as
the elytra, the medial and outer joints about one-half longer than
wide; prothorax very indistinctly narrower at base than at apex, one-
half wider than long, the sides rather narrowly rounded anteriorly,
oblique basally, becoming feebly sinuate toward the angles, which
are right and very sharp, apparently without the usual seta; sides
of the base oblique and sinuate, becoming transverse toward the
angle; anterior impression distinct, the posterior deep, strongly
angulate, the stria joining the two rather deep; elytra somewhat
over one-half longer than wide, nearly one-half wider than the pro-
thorax, parallel, with almost straight sides, rapidly obtusely round-
ing behind, the apices near the suture narrowly truncate; humeri
narrowly and abruptly rounded, the edge near the base minutely
setose and feebly serrulate; each has four fine but distinct equal
striae, which are feebly and irregularly punctulate; foveae rather
before basal and apical third. Length 1.5 mm.; width 0.5 mm.
Texas (Austin). Arizona and California, — Hay ward.

rufotestaceus Hayw.

There are several characters relating to rufotestaceus that, to-
gether, are almost sufficient to make of it a distinct subgeneric
group of Tachys. The first and most important, if constant, is
the absence of the universal setigerous puncture at or near the
hind angle of the prothorax; in my single specimen there is no trace
of the seta and careful search reveals no inequality of the edge re-
sembling in any way a definite fovea, but more examples would
have to be examined before coming to a _ final conclusion. The
second character relates to the basally sinuate sides of the pro-
thorax and acutely rectangular basal angles, the third to the four
moderate subequal and punctulate elytral striae and the fourth to
the slightly longer antennas and decidedly larger eyes. The species
trechiformis of Hayward, will certainly constitute another well
marked subgeneric group. So, in the course of time, there will be
a considerable number of subgenera to record under Tachys, though
probably not comparable with the number at present composing
Bembidion. Tachyura, having the body oval, more strongly con-
vex and with denser and thicker integument, is in no way closely
allied to Tachys and should not be considered in close connection

BEMBIDIIN.E 215

therewith. The two following, however, bear a closer external re-
semblance to Tachys, though completely lacking the peculiar and
highly characteristic foraminiform cavities of the mentum.

Tachyta Kirby

Tachymenis Mots, (pars)

The body in this genus is decidedly depressed and uniformly
black, the integuments not very thin as in Tachys, but denser and
always strongly and distinctly micro-reticulate above, the coarse
reticulations of the elytra but slightly transverse and never in wavy
lines; so no appearance of opalescence is ever observable. The
head is moderate or rather small, with very moderate, rather coarsely
faceted and feebly setulose eyes and narrow, very widely separated
sulci near them; the antennae are relatively short but not monili-
form and have the second joint much shorter than the third, differ-
ing greatly also in this way from Tachys. The mentum is broadly
and feebly bi-impressed, but exhibits no trace of the singular deep
foraminiform foveae of Tachys and Pericompsus; the mental sinus
is not large and the sharp triangular tooth is well developed; the
palpi are moderate and the last segment of the outer maxillary lobe
tapers gradually to a fine apex. The hind thoracic angles are dis-
tinct, setigerous as usual and not reflexed; sometimes there is an
obvious carina; the subbasal impression is never sulciform as it is
in Tachys. The elytra are obl(5ng, always with a number of fine
and sometimes feebly punctulate striae, the sutural recurved at
apex, the long deep recurvature lying very near the posterior part
of the lateral stria, which is only partially or imperfectly inter-
rupted at the middle; the dorsal foveae are much more widely sep-
arated than in Tachys, lying nearer the base and apex and are on
the fourth stria. The anterior tarsi of the male have the two small
and slightly inflated basal joints angularly produced internally.

A careful examination of the large material in my collection shows
that there are a considerable number of species, besides the two
already recorded ; on actual comparison with a European specimen
of nana Gyll., I am convinced that it does not occur in our fauna.
The nine species at present before me, including nana, may be known
as follows:

216 MEMOIRS ON THE COLEOPTERA

Pronotum with an obtuse carina at each side of the base, subparallel
and rather close to the lateral edge 2

Pronotum without a lateral carina 5

2 — Prothorax narrower at base than at apex, the carinae short and feeble.
Body elongate, parallel, shining, black, the legs piceous; head two-
thirds as wide as the prothorax, the eyes very moderate, slightly
prominent; antennae rather slender, piceous, slightly paler basally,
but little more than half as long as the elytra, the fifth joint very
nearly twice as long as wide; prothorax one-half wider than long,
the sides strongly rounded anteriorly, notably oblique behind the
middle, becoming deeply sinuate and then parallel and straight in
about basal eighth, the right angles very sharp, the edges moder-
ately reflexed; apex deeply and conspicuously sinuate, the base
truncate; surface with minute scattered punctures, in addition to
the strong reticulation, depressed, the anterior impression narrow,
close to the apex, the posterior shallow and indefinite but strongly
angulate medially; at each side of the base there is a shallow depres-
sion, limited externally by the short carina or fold; elytra unusually
elongate, fully three-fourths longer than wide, two-fifths wider than
the prothorax, gradually parabolic in about apical third, subparallel,
with feebly arcuate sides and rather broadly rounded humeri; pedi-
cel a little over a third the subbasal width; about four fine, feeble
and shallow striae can be traced, the surface unusually shining;
fovese near one and five sevenths. Length 2.8 mm.; width i.i mm.
Wisconsin (Bayfield), — Wickham angulata n. sp.

Prothorax as wide at base as at apex or wider, the apex more shallowly
sinuate; sides not so abruptly sinuate at base 3

3 — Sides of the prothorax broadly and gradually sinuate basally and evi-
dently converging, becoming parallel before the angles, the carinae
short as in the preceding. Coloration and lustre as in the pre-
ceding, the reticulation relatively coarse and strong throughout;
legs similar; head three-fifths as wide as the prothorax, the eyes de-
cidedly small but prominent, the antennae slender, piceous-black
throughout, but little over one-half as long as the elytra, the fifth
joint about twice as long as wide; prothorax fully three-fifths wider
than long, rather wider at base than at apex, widest at anterior two-
fifths, the sides broadly arcuate anteriorly; basal angles right and
sharp; base truncate; surface as in angulata throughout, the median
stria rather wider, shallowly impressed; elytra much broader, more
oblong-oval, barely more than one-half longer than wide, scarcely
two-fifths wider than the prothorax, the parallel sides much more
arcuate and more broadly reflexed than in angulata, the humeri
scarcely so broadly rounded; five shallow striae are more or less dis-
tinctly traceable, the foveae near one-fifth and two-thirds. Length
2.75-2.8 mm.; width 1.2 mm. Minnesota (Duluth). Two exam-
ples, taken by the writer kirbyi n. sp.

Sides of the prothorax but very feebly converging from the broad and
feeble anterior arcuation and almost straight, never more than just
visibly and very broadly sinuate, the hind angles sharply defined
however 4

BEMBIDIIN/E 217

4 — Thoracic carinae short as in the two preceding; antennae thick; elytra
without interstrial punctures. Body rather narrow and somewhat
more convex, similar in color and sculpture to the two preceding;
head fully three-fifths as wide as the prothorax, the eyes rather small,
moderately prominent; antennae short, about half as long as the ely-
tra, fusco-testaceous,, the fifth joint one-half longer than wide, the
tenth on the flattened side but very slightly longer than wide; pro-
thorax three-fifths wider than long, the sides strongly rounding
anteriorly and inwardly to the apex, which is much narrower than
the base; basal angles a little more than right; surface with the scat-
tered punctures very minute; posterior impression indefinite, though
a little stronger than in the preceding, the lateral impressions very
broad and shallow; elytra fully three-fifths longer than wide, two-
fifths wider than the prothorax, gradually parabolic behind, parallel,
with very feebly arcuate and well reflexed sides and rather broadly
rounded humeri; the three inner striae are rather distinctly but irreg-
ularly impressed, the next two very fine to barely traceable; foveae
near basal sixth and apical fourth. Length 2.6 mm.; width i.o mm.

Europe *nana Gyll.

Thoracic carinae longer, nearly a fourth the total length of the pronotum;
antennae longer and less thickened; elytra with fine scattered inter-
strial punctures, somewhat less minute than those of the pronotum.
Body stouter, feebly convex, more ventricose, black, the legs dark
rufous, moderately shining; head three-fifths as wide as the pro-
thorax, the eyes small but prominent; antennae evidently more than
half as long as the elytra, dark testaceous, the fifth joint nearly
twice as long as wide; prothorax short, three-fourths wider than
long, rounded at the sides anteriorly as in nana, but not so much
inwardly at apex, the latter sinuate and distinctly narrower than the
base; sides posteriorly very broadly and feebly sinuate, the angles
right and sharp; impressions very moderate, the median stria distinct,
the lateral basal impressions broad and somewhat deep, opaque;
elytra one-half longer than wide, parallel, with arcuate and rather
narrowly reflexed sides, fully two-fifths wider than the prothorax,
very gradually ogival from but slightly behind the middle; six striae
are distinct and rather deeply impressed, the outermost feeble, the
inner rather evidently but irregularly punctulate; foveae near one-
sixth»and two-thirds. Length 2.5-2.7 mm.; width i.o-i.i mm. Cal-
ifornia (Lake Tahoe; also Humboldt and Siskiyou Cos.). Twelve

examples falli Hay w.

5 — Prothorax larger, more than three-fourths as wide as the elytra. . . .6

Prothorax smaller, about three-fourths as wide as the elytra 8

6 — Antennae short, scarcely more than half as long as the elytra. Body
oblong-suboval, rather depressed and shining, though with coarse
micro-retjculation, black, the legs piceous; head three-fifths as wide
as the prothorax, the eyes very moderate in size, somewhat prom-
inent; antennae fuscous, the medial joints one-half longer than wide,
the third narrower and distinctly longer than the second; prothorax
three-fifths wider than long, wider at base than at the feebly sinu-
ate apex; sides moderately rounded anteriorly, slightly oblique and

218 MEMOIRS ON THE COLEOPTERA

just visibly sinuate in about basal half, finely reflexed, the basal
angles somewhat more than right and slightly blunt but not rounded;
impressions feeble, the shallow basal foveae at outer sixth rather
narrower than usual, opaque; medial stria moderate; elytra rather
more than one-half longer than wide, two-fifths wider than the pro-
thorax, gradually parabolic in fully apical two-fifths, the sides thence
parallel, well reflexed and very feebly arcuate to the broadly rounded
humeri; pedicel slightly more than half as wide as the thoracic base;
striae one to four more or less evident but very shallow and somewhat
irregular; foveae near one and five sevenths. Length 2.4-2.75 mm.;
width 0.95-1.15 mm. New York to North Carolina (Asheville),
Illinois, Kansas, Texas (Houston), Colorado and Northern Idaho
Coeur d'Alene). Abundant. [T. picipes Kirby] inornata Say

Antennae decidedly longer, being evidently more than half as long as the
elytra 7

7 — Form oblong-suboval, deep black, depressed, moderately shining, the
elytral reticulations very strong; legs dark rufous; head nearly two-
thirds as wide as the prothorax, the eyes very moderate, less convex
than usual; antennae obscure testaceous, three-fifths as long as the
elytra, rather heavy, the medial joints three-fourths longer than
wide, the third and fourth equal, slender, distinctly longer than the
second; basal joint but one-half longer than wide; prothorax barely
as wide at base as at apex, three-fifths wider than long, strongly
rounded at the sides in about apical third, thence unusually strongly
oblique in much more than basal half, becoming just visibly sinuate
posteriorly, the angles right and sharp; impressions moderate, the
stria joining them distinct; sublateral basal impressions opaque,
rather deep and broadly sublinear; margins very finely reflexed;
elytra one-half or more longer than wide, only about a third wider
than the prothorax, the general outline nearly as in the preceding;
surface with six fine and feeble stria?, slightly more distinct inwardly,
all except the sutural greatly abbreviated, the foveae as in inornata.
Length 2.7-2.85 mm.; width 1.1-1.15 mm- Washington State.

collaris n. sp.

Form oblong-suboval, still more depressed and still less distinctly shin-
ing, black, with piceous legs; micro-reticulation strong throughout;
head nearly two-thirds as wide as the prothorax, the eyes rather
small but prominent; antennae rather thick and obscure testaceous,
fully three-fifths as long as the elytra, the medial joints one-half
longer than wide, the fourth slightly shorter and evidently thicker
than the third, which is longer than the second as usual; prothorax
less abbreviated, one-half wider than long, barely as wide at base
as at the feebly sinuate apex; sides less finely reflexed, rather more
broadly and feebly rounded anteriorly, oblique and straight in about
basal half, the angles evidently obtuse but not blunt; surface with
feeble but evident transverse impressions and rather fine median
stria, the opaque latero-basal impressions shallower than in collaris;
elytra one-half longer than wide, fully two-fifths wider than the pro-
thorax, gradually parabolic in fully apical third, the sides parallel,
well reflexed, almost straight, the humeri as usual; seven striae are

BEMBIDIIN^E 219

distinctly traceable, the inner four rather well impressed and dis-
tinct; foveae as usual. Length 2.6 mm.; width 0.9 mm. Arizona
(probably southern) arizonica n. sp.

8 — Body oblong-oval, slightly convex, shining, with rather feebler micro-
reticulation, black, the elytra blackish-piceous, the legs rufo-piceous;
head two-thirds as wide as the prothorax, the eyes, rather small and
not very prominent; antennae fusco-testaceous, moderately slender,
only a little more than half as long as the elytra, the medial joints
scarcely one-half longer than wide, with the third longer than either
the second or fourth; prothorax one-half to three-fifths wider than
long, barely perceptibly wider at base than at apex, the latter very
feebly sinuate, with obtusely rounded angles; sides very finely re-
flexed, broadly, evenly rounded in about apical, oblique and straight
in basal, half, becoming very slightly sinuate immediately at the
angles, which are consequently right and subprominent, with the
apex slightly blunt; transverse impressions very feeble, the stria fine;
latero-basal impressions shallow, sometimes obliquely sublinear; ely-
tra oblong, with well reflexed and slightly arcuate sides, gradually
parabolic in apical third, more or less nearly one-half longer than
wide and not quite one-half wider than the prothorax; about four
fine and feeble striae are detectible, the sutural evidently deeper
than any other; foveae as usual. Length 2.3-2.65 mm.; width 0.85
-1.15 mm. New York (Catskill Mts.), — H. H. Smith. Two speci-
mens. The male is notably larger and broader than the female.

debilicollis n. sp.

Body narrowly oblong, feebly convex, moderately shining, black, the
legs rufo-piceous; head three-fifths as wide as the prothorax, the
eyes rather small, moderately prominent; antennae somewhat thick
and short, fusco-testaceous, but little more than one-half as long as
the elytra, the medial joints barely one-half longer than wide, the
third distinctly longer than the second or fourth; prothorax not over
one-half wider than long, the base and feebly sinuate apex equal in
width; sides rather finely reflexed, rounded anteriorly, oblique and
nearly straight in about basal half, becoming very slightly sinuate
near the angles, which are right and sharp; transverse impressions
feeble, the stria somewhat fine, the latero-basal impressions rather
small and shallow; elytra about three-fifths longer than wide, three-
sevenths wider than the prothorax, gradually rounded in about api-
cal third, parallel, the sides feebly arcuate and well reflexed, the
humeri somewhat less broadly rounded than in any other species;
striae about four in number, fine and feebly impressed, the foveae
as usual. Length 2.25-2.5 mm.; width 0.85-0.95 mm. California
(Humboldt Co.; also Mokelumne Hill, Calaveras Co.). Five speci-
mens californica n. sp.

The four species having an obtuse carina near the thoracic angles,
differ conspicuously from the others and also among themselves.
The European nana, which is one of these, is included for compari-
son. Of the remaining species, the widely distributed inornata,

220 MEMOIRS ON THE COLEOPTERA

which however does not extend its range into the Pacific coastal
fauna, is distinguishable readily by its small antennae, collaris by
the peculiar form of the prothorax, and both this and arizonica
differ from inornata in the longer and thicker antennae. The last
two species of the table are also peculiar, and especially debilicollis,
which has an unusually ventricose form of body and piceous elytra;
it also differs considerably in the sexes, as noted above; calif ornica
is smaller and narrower than inornata and has the base and apex
of the prothorax more nearly equal. Mr. Bates has given rivularis
Mots. — not Mann, as stated by the author — as a synonym of nana,
but the descriptions certainly indicate quite a different thing, more
notably in coloration, and it is probably a valid species; it occurs
at Sitka, Alaska.

Tachymenis Mots.

Motschulsky included two quite different genera under his def-
inition of Tachymenis, one of which had been described by Kirby
under the name Tachyta, a genus of wide northern distribution in
both hemispheres. The other generic group, which may be con-
sidered typical Tachymenis, since no actual type species was named
by the author, includes a few remarkably distinct species, of which
flavicauda Say may be regarded as the generic type. The special
peculiarity of Tachymenis is the deep even groove along the sides
of the pronotum, thinning the integument so that by transmitted
light the edge appears testaceous; along the inner edge of the groove
posteriorly there is a fine longitudinal carina, accentuating the ab-
ruptness of the gutter. Otherwise there is a considerable simili-
tude with Tachyta, except that the antennae are still shorter and
moniliform, with the second and third joints equal in length but
not in thickness, and that the lateral groove of the elytra is more
completely and broadly interrupted submedially and more nearly
obsolete. The pronotum has the same fine scattered punctures
seen in Tachyta. The superciliary punctures bear very long setae
and are at an unusually great distance from the inner margin of
the eyes, especially the smaller posterior puncture. The Tachyta
autumnalis and cucuj aides of Bates, from Mexico and Central
America, also belong to this genus, likewise marginicollis Mots.,
which is really not different horn, flavicauda in all probability; but

BEMBIDIIN.E 221

the reflexicollis of Motschulsky, said to occur near New York City,
seems to be different, having the pronotum apparently more broadly
reflexed at the sides and the color testaceous. The dorsal elytral
fovese differ very much from those of Tachyta, being on the third
interval, very close to the third stria and they are very much less
widely separated, the anterior in fact but slightly before the middle.
The genus Mioptachys of Bates, is extremely close to Tachymenis,
having a similar conformation of the sides of the pronotum, and it
is my belief that it cannot be considered to be more than a subgen-
eric group of the genus, characterized by the narrow elongate form
of the body and deficient elytral striation. In the following table
I have described a species from Guatemala, which seems to be inter-
mediate between the normal flavicauda types of the genus and Miop-
tachys, having the slender form of the latter, with more restricted
striation than in flavicauda, though with the eyes not very small as
in Mioptachys but well developed, even more so than in flavicauda.

Body oblong-oval, slightly convex, shining, piceous-black, the trans-
lucent sides of the prothorax testaceous, the elytra abruptly testa-
ceous in almost apical half and also sometimes more nubilously at
base; abdomen feebly testaceous at tip; legs pale flavo-testaceous;
integuments thick, the ground sculpture a very fine but not close
wavy transverse reticulation throughout; head small, scarcely three-
fifths as wide as the prothorax, with two small impressions at the
anterior margin of the front and an oblique ridge near each eye,
the latter rather small, slightly prominent; antennae testaceous,
three-fifths as long as the elytra; prothorax slightly less than one-
half wider than long, somewhat wider at base than at apex, the sides
parallel and feebly, subevenly arcuate, a little straighter behind the
middle, the angles slightly more than right, sharp; anterior impres-
sion subobsolete, the posterior sulciform, broadly arcuate, inter-
rupted at the middle, the stria coarse, attaining base but not apex;
elytra two-fifths to one-half longer than wide, two-fifths wider than
the prothorax, oblong, obtusely rounded in apical third, the humeri
broadly rounded, the seven striae evident, rather strong inwardly,
uneven or vaguely subpunctate; intervals each with a single series
of widely spaced and very small micro-setigerous punctures; foveae
minute, just before the middle and near apical fifth. Length 1.7-
1.75 mm.; width 0.7 mm. Atlantic to the Gulf and Lake regions
and westward to the Pacific. Abundant. [Tachymenis margini-
collis Mots.] flavicauda Say

Body much narrower, shining, pale testaceous throughout above and
beneath, the elytra with a very faint central cloud; ground sculpture
nearly as in the preceding; head relatively larger, two-thirds as
wide as the prothorax, almost as in flavicauda in structure and in
the basal parts of the antenna? — all but three joints missing in the

222

MEMOIRS ON THE COLEOPTERA

type — but with notably large and rather prominent eyes, the length
of which is greater than a third of the frontal width between them;
prothorax one-half wider than long, about equally wide at base and
apex, the parallel sides slightly rounded anteriorly, just visibly sinu-
ate basally, the angles sharp and very feebly everted; lateral gutter
deep and even throughout, the inner bounding carina half as long
as the pronotum, the anterior part of the margin also rather acute
though not cariniform; surface and stria nearly as in the preceding,
the subbasal sulcus not medially interrupted; elytra more than one-
half longer than wide, two-fifths wider than the prothorax, rounded
in apical third, broadly subtruncate at apex, parallel, with slightly
arcuate and rather widely reflexed sides and somewhat narrowly
rounded humeri; there are two evident and feebly punctulate striae,
the others obsolete, the series of minute interstrial punctures sub-
obsolete, barely traceable; fovese nearly as in flavicauda, the anterior,
however, much coarser. Length 1.65 mm.; width 0.6 mm. Guate-
mala (Quirigua), — Mrs. T. D. A. Cockerell *ocularis n. sp.

The sutural stria in the genus becomes feebler posteriorly and does
not quite attain the apex, the latter not beaded as it is in Tachyta,
but, externally, the usual recurvature as visible in Tachyta,
still persists and is moderately long. The extended distribution
of flavicauda is altogether exceptional in the subfamily; the Pacific
coast representatives offer no essential differential features that I
can observe; individuals are extremely uniform in size throughout
its range.

The following species are unknown to me in nature; possibly
some of them may have been unknowingly redescribed in the fore-
going pages, but of this nothing definite can be said at present:

Bembidion

acutifrons Lee Cal.

aeneicolle Lee L. Sup.

aenulum Hayw Iowa

aratum Lee Gila R.

biimpressun Mann Alask.

blaisdelli nom. nov Cal.

concinnum \\ Blaisd.

bowditchi Lee Wyo.

breve Mots Alask.

canadense Hayw Ont.

carinatum Lee Ariz.

cautum Lee R. Mts.

coloradense Hayw Col.

complanatum Mann Alask.

convexulum Hayw B. Col.

cordatum Lee N. Y.

dyschirinum Lee Or.

falsum Blaisd Cal.

fortestriatum Mots Alask.

fraternum Lee Geo.

fuchsi Blaisd Cal.

fugax Lee 111.

fuscicrus Mots Alask.

mixtum Lee.

glabriusculum Mann Alask.

grandicolle Lee S. D. Cal.

hageni Hayw Ariz.

sexpunctalum \\ Lee.

hamiferum Chd Tex.

ineertum Mots Alask.

incrematum Lee Alask.

nigripes || Mann.

jucundum Horn Ariz.

kuprianovi Mann Alask.

laterimaculatum Mots Cal.

machlini Hayw Alask.

morulum Lee H. B. T.

BEMBIDIIN/E

223

nebraskense Lee Neb.

nigrocceruleum Hayw Wash.

oberthuri Hayw R. Mts.

obscuripenne Blaisd Or.

obscuromaculatum Mots Alask.

picipes Kirby Can.

pilatei Chd Tex.

plagiatum Zimm Atl.

lacunariiim Zimm.

planipenne Lee L. Sup.

planum Hald Atl.

guexi Chd..

platyderum Chd N. Y.

platynoides Hayw S. Cal.

puritanum Hayw Atl.

quadrifoveolatum Mann Alask.

recticolle Lee N. M.

rickseckeri Hayw Cal.

rubiginosum Lee Colo.

simplex Lee Atl.

suspectum Blaisd Or.

vandykei Blaisd Cal.

versutum Lee Atl.

vile Lee S. D. Cal.

viridicolle Laf Tex.

whitneyi Fall Cal.

wickhami Hayw Cal.

Amerizus

oblongulus Mann Alask.

wingatei Bland . . Pa.

Lymneops
laticeps Lee S. D. Cal.

Tachyura

brunnicollis Mots Atl.

ferrugineus Dej Atl.

frontalis Hayw Atl.

fuscicornis Chd La.

liebecki Hayw Tex.

obesulus Lee Gila R.

ovipennis Chd Atl.

Tachyta
rivularis Mots Alask.

Tachys

albipes Lee La.

glabrella Mots Atl.

latipennis Hayw L. Cal.

marginellus Lee Col. R.

misellus Laf Tex.

mordax Lee Col. R.

oopterus Chd La.

pallidus Chd Tex.

reflexicollis Mots N. Y.

sequax Lee R. Mts.

testaceolimbata Mots Atl.

trechiformis Hayw Ariz.

virgo Lee S. D. Cal.

Bibliographic references and adequate descriptions of most of
these species are given in the two papers of Mr. Hayward, referred
to at the beginning of this work, but I have not always followed
the synonymy given by that author and only the original localities
are cited above in most cases, because of the composite nature of
the material associated by Mr. Hayward under his conception of
specific scope.

II— STUDIES AMONG SOME OF THE AMERICAN
AMARIN^ AND PTEROSTICHIN^

The genus Amara, in its comprehensive sense, was held to be
merely a member of the Pterostichinae by G. H. Horn, but many
systematists believe that, because of certain habital differences
and some peculiarities of palpal structure — not however without
numerous exceptions — the genera allied to Amara should be con-
sidered separately from the true Pterostichinae and I agree with
Mr. Bates in so regarding them.

Subfamily AMARIN^E

The small or moderate, oval or oblong species composing this
subfamily are very numerous, though much less so than those of
the Bembidiinae previously described in this volume, and they are
more difficult, or perhaps unsatisfactory from a taxonomic stand-
point, owing to a more obvious deficiency in structural peculiarities.
They form a fairly isolated group, more closely related to the Pteros-
tichinae than to any other of the larger subfamilies, though easily
distinguishable as a rule by certain habital features and, as noted
by Bates, by the relatively more elongate and more setose penulti-
mate joint of the labial palpi, a special character first observed by
G. H. Horn, but apparently not utilized by him systematically.
As in the case of so many other Carabid groups, the species are
peculiarly northern in habitat; they have been treated systematic-
ally by LeConte (Proc. Ac. Phila., 1855, 7, p. 346), Horn — Tricena
and Celia — (Tr. Am. Ent. Soc., XIX, 1892, p. 18) and Hayward
(1. c., XXXIV, 1908, p. 13).

In some large sections of our Amarinae the species have scarcely
been touched from a descriptive viewpoint, so that there is almost
a virgin field for this form of research. It is primarily for this
reason that the number of legitimate taxonomic forms which I
have been forced to recognize and describe, seems incredibly large,
especially in the genus Celia. This very large proportion of new
descriptions is not by any means chiefly owing to the undiscrimi-

224

AM A RI ISLE 225

nating methods of certain earlier auth6rs, although this was largely
contributive, but is principally due to very extensive fresh material
which has been rendered available through the kindness of many
friends, and particularly Mr. John D. Sherman, Jr., who secured
remarkable series of many species in the almost inexhaustible re-
gions about Lake Superior. Messrs. Shoemaker and Schott of
New York, Prof. Wickham and others, have also aided materially.
The Levette collection furnished a large and varied assortment of
western species and a goodly number were captured by myself
from time to time.

I do not think there can be very serious doubt that the groups
of the subfamily denned and named by Zimmermann, should be
considered distinct genera and not in the nature of subgenera, for
each is characterized by its own peculiarities of facies, which be-
come more and more apparent through prolonged observation and
comparative study, and I therefore advocate their retention as
valid genera. These genera, so far at least as our own fauna is
concerned, may be outlined in few words as follows:

Terminal spur of the anterior tibiae simple 2

Terminal spur trifid equally in both sexes; posterior male tibiae pubescent

within 12

2 — Prosternal process iinmargined, not setose; prothorax widest before

the base; hind tibiae not pubescent internally in the male 3

Prosternal process margined 7

3- — Body elongate, somewhat as in Pterostichns 4

Body shorter and stouter; middle tibiae not internally dentate in the

male 6

4 — Antennae thickest medially, tapering thence to base and apex; tarsi
thick; thoracic base transverse and straight; middle male tibiae not
or but vestigially dentate within; body less slender; habitat south-
ern Feronalius

Antennae filiform; body much more slender. . •. 5

5 — Antennae and tarsi slender; frontal sulci short, never prolonged upon
the epistoma; thoracic base sinuate — either throughout or laterally;
middle male tibiae grooved or flattened internally and bi- or tridentate
on the inner edge distally; habitat arctic or subarctic. . .Curtonotus
Antennae notably thick, gradually flattened distally as usual, the tarsi
thicker than in Curtonotus; frontal sulci long, deep, sometimes in-
vading the epistoma; thoracic base not sinuate, rounded laterally;
middle male tibiae obsoletely bisinuate within; habitat as in the pre-
ceding Stereocerus

6 — Frontal sulci small; last palpal joint more swollen than usual, acumi-
nate distally; thoracic base truncate, becoming oblique laterally;
T. L. Casey, Mem. Col. VIII, Oct. 1918.

226 MEMOIRS ON THE COLEOPTERA

elytra with fine impunctate striae, the scutellar obsolete; body ob-
long, small in size Leironotus

7 — Prothorax decidedly wider before the base somewhat as in the preced-
ing genera 8

Prothorax widest at base as a rule, though sometimes very feebly inflated
and in such cases slightly wider submedially than at base 9

8 — Posterior male tibiae not pubescent within; body stout, oblong.

Leiocnemis

Posterior male tibiae pubescent within; mentum tooth truncate and trap-
ezoidal to bilobed; body slender to stout; thoracic sides sinuate to
rounded basally as in Curtonotus Bradytus

9 — Posterior male tibiae without internal pubescence 10

Posterior male tibiae pubescent within 1 1

10 — Prosternal process having numerous bristling setae; body larger.

Percosia

Prosternal process without more than two setae; body smaller, often with
thinner integument Celia

ii — Body elongate-oval, always with dense integument Amara

12 — Body as in Amara, though usually smaller or relatively narrower
and more elongate, the male tibiae as in that genus Triaena

Two of the species hitherto placed in Curtonotus, differ so greatly
from typical forms of the latter as seemingly to warrant generic
separation under the names above suggested for Curtonotus pteros-
tichinus — or putzeysi — and hcematopus. The characters given for
Leironotus Gangl., are taken from the work of Mr. Hayward, as
I have no representative of the species Amara arenaria at hand,
and therefore can consider it no further for the present. I have
also omitted Acrodon Zimm., for similar reasons; it is founded upon
A. brunnea Gyll., of northern Europe, said to occur also in Alaska;
a species from Colorado in my collection, which may have been
confounded with it, has a trapezoidal sinuato-truncate mentum
tooth; it is said to be acute in Acrodon brunneum. The form of
the mentum tooth varies a good deal in nearly all the groups of
Amarinse and is an uncertain element in the estimation* of genera.
In Curtonotus, for example, it is normally small, short and bilobed,
but in fulvipes and carinatus it is short, very broadly trapezoidal
and with truncate apex; so also in Bradytus, we have the usually
bilobed form, or the trapezoidal and narrowly truncate develop-
ment seen in apricarius.

Feronalius n. gen.

The species named pterostichimis by Hayward, forming the type
of this genus, and of which a male from Fort Wingate, New Mexico,

AMARIN/E 227

lies before me, so closely resembles pulzeysi Bates, from Mexico,
that I am altogether uncertain as to its validity. In addition to
the characters given above, the very large head and deeply and al-
most wholly strigose mandibles are important from a generic view-
point; the deep strigae are obsolete for a greater distance basally
on the right than on the left mandible. The scutellum extends
posteriorly between the elytra much less markedly than in Curto-
notus. The mentum tooth is strongly bidentate. The form and
sculpture of the pronotum and elytra are virtually as in Curtonotus.

Curtonotus Steph.
Cyrtonotus Auct.

Removing the two aberrant species pterostichinus and hcematopus
as above, this rather large and well known genus becomes fairly
homogeneous, the chief diversification being in the form of the
thoracic sides basally; there is usually a deep sinus just before the
angles, though in the brunnipennis section, the sides are rounded
to the basal angles, but with the lateral parts of the base never-
theless remaining distinctly sinuate. A large proportion of the ex-
treme northern species are unknown to me in nature, and so at
this time I will simply make known a few nondescript species,
which can readily be interpolated in the very satisfactory table
drawn up by Mr. Hayward. If Curtonotus is to be maintained
as a distinct genus, the namefulvipes Putz., will have to be restored,
in place of pennsylvanicus Hayw. This species is aberrant in out-
line, almost exactly resembling Bradytus exaratus Dej., which, with
a few allied species, forms an equally aberrant element in Bradytus,
and, as further proving the close relationship of Curtonotus and Bra-
dytus, it should be said that wholly similar differences in the form
of the thoracic sides toward base, as related of the former, exist
also in the latter genus; this qan be observed in comparing, for
example, apricarius with septentrionalis.

On reading the description of Curtonotus adstrictus given by Put-
zeys, I am unable to differentiate it from laticollis Lee., and be-
lieve the two to be identical. It is probable that the species de-
scribed below under the name spadiceus, is among those identified
as adstrictus by Hayward, but the Putzeys description does not fit
it very well, especially in the width of the elytra, which in adstrictus

228 MEMOIRS ON THE COLEOPTERA

are said to be perceptibly wider than the pro thorax; in spadiceus
it is seldom that the elytra become perceptibly wider than the pro-
thorax, and the proportion of width to length of the body given for
adstrictus — 5.7 to 13 mm. — is even greater than in any example of
laticollis at hand, showing that adstrictus is very much stouter than
the notably narrow and parallel spadiceus or tartareus.

It is to be regretted that the. philologically defective name Cur-
tonotus has to be retained, rather than the substitute Cyrtonotus of
more recent authors, but on the principle that generic symbols
should not be changed in any way if it can possibly be avoided, it
it necessary to employ it in place of the latter.

Curtonotus sponsor n. sp. — Narrow and elongate, moderately convex,
black, shining, the under surface and legs brownish-rufous; head fully
two-thirds as wide as the prothorax, with unusually large, prominent
eyes; antennae ferruginous, fully as long as the head and prothorax, the
latter two-fifths wider than long, rather evidently wider at apex than at
base, the apical angles broadly rounded; sides strongly rounded, becom-
ing parallel and straight for some distance before the basal angles, which
are very acute; median stria not attaining the apex; surface only mi-
nutely and obsoletely punctulate apically, the concavity within the long
strong basal carinae coarsely punctate and having a small, longitudinal
anterior impression at some distance from the carina; side margins finely
reflexed throughout; elytra two-thirds longer than wide, a fifth wider
than the prothorax, parallel, with feebly arcuate sides; striae fine but well
impressed, the punctures fine, sometimes scarcely observable, the lateral
series of ocellate punctures moderately interrupted ; subapical sinus rather
strong. Length (cf) 11.0-11.5 mm.; width 3.8-4.1 mm. California
(Siskiyou Co.). Three examples.

Resembles jacobinus, which I have from San Diego to Alameda,
but smaller, narrower and with longer antennae than in the male of
that species, less transverse prothorax, which is also punctured
apically, and with more obtusely rounded apical angles, very much
finer punctures of the finer elytral striae and less widely interrupted
series of the eighth. It does not seem to resemble stupidus Lee.,
from Sacramento, very closely, according to the description.

Curtonotus concretus n. sp. — Elongate, convex, subventricose, shin-
ing, black; under surface piceous, the legs dark rufous; head two-thirds
as wide as the prothorax, the eyes well developed, prominent; anterior
strides narrow, deep; antennae ferruginous, a third longer than the head;
prothorax two-fifths wider than long; apex sinuate, with broadly rounded
angles and distinctly wider than the base; sides broadly rounded, gradu-
ually sinuate basally, where they do not become parallel, the angles
acute; surface impunctate anteriorly; basal foveae and carinae nearly as

AMARIN.E 229

in jacobinus, but much less coarsely punctate, the median stria similar;
elytra unusually inflated, though three-fifths longer than wide, a third
wider than the prothorax, the eighth stria as in jacobinus, the subapical
sinus deeper; striae more deeply impressed, coarsely punctate and crenate
anteriorly; the scutellar long, coarsely punctate. Length (9 ) 12.0 mm.;
width 4.8 mm. California (a single female from the Levette collection,
without more definite indication of locality).

This species, while associable rather closely with jacobinus, differs
in its relatively smaller and much less transverse prothorax, without
trace of anterior punctures and with less parallel sides at base, and
also in its more inflated elytra, with coarser crenating strial punc-
tures and deeper subapical sinus.

Curtonotus spadiceus n. sp. — Outline narrow, subparallel and elon-
gate, rather shining, piceous-black to slightly paler; head barely three-
fifths as wide as the prothorax, with moderate eyes and narrow sub-
oblique anterior strioles; antennae ferruginous, nearly as long as the head
and prothorax (cf), shorter (9); prothorax two-fifths to one-half wider
than long, the sinuate apex equal in width to the base and with moder-
ately blunt angles; sides rounded, sinuate and parallel to diverging at
base, much more broadly reflexed than in the two preceding and punc-
tulate along the gutter; surface with fine scattered punctures anteriorly,
the latero-basal impressions large, shallow, punctate and single, the car-
ina long and strong; punctures extending across the middle as usual, the
median stria abbreviated at apex but not at base; elytra fully three-
fourths longer than wide, not or just perceptibly wider than the pro-
thorax, the lateral series broadly interrupted; subapical sinus rather deep
(cf), or broader and shallow (9); striae moderate and with moderate
punctures anteriorly, the intervals nearly flat except apically. Length
(d" 9 ) 11.0-13.0 mm.; width 4.0-4.6 mm. New Mexico (Jemez Springs,
Las Vegas and Fort Wingate). Eleven specimens.

Related to laticolHs but much narrower and with less transverse
prothorax. In some examples the thoracic fovese are very obso-
letely subdivided longitudinally but never so evidently as in lati-
collis, and their punctures are less coarse.

Curtonotus tartareus n. sp. — Form elongate, narrow and parallel,
strongly shining, black, the under surface blackish-piceous; legs obscure
rufous; head three-fifths as wide as the prothorax, with only very mod-
erately convex eyes, the strioles rather fine, parallel; antennae dark ferru-
ginous, long and somewhat slender, not quite as long as the head and
prothorax, the latter but slightly transverse, even less than a third wider
than long, the sinuate apex with broadly obtuse angles and equal in
width to the base; sides but moderately reflexed, punctulate, broadly
rounded, becoming rapidly sinuate and parallel for a short distance
before the very acute angles; surface impunctate anteriorly, the impres-
sions and carinae nearly as in laticoUis but much more finely punctate;

230 MEMOIRS ON THE COLEOPTERA

elytra equal in width to the prothorax, three-fourths longer than wide,
subinflated and wider behind the middle than at base; lateral series
widely interrupted, the subapical sinus moderately deep; striaa rather
deeply impressed though fine, not very coarsely punctate, the intervals
feebly convex except laterally, strongly convex on the apical declivity.
Length (cf) 12.0 mm.; width 4.5 mm. A single example, probably
taken in Colorado by Levette.

This distinct species belongs to the laticollis section, but differs
greatly in its narrower and more parallel form, much less transverse
prothorax and in many other characters. From spadiceus it differs
in the shorter and more abruptly formed basal sinus of the thoracic
sides, relatively longer and less transverse prothorax, which is also
less reflexed at the sides, in its still longer male antennae and in the
still broader anterior male tarsi.

Curtonotus catenulatus n. sp. — Oblong, parallel, only moderately con-
vex, deep black and polished, with the elytra bluish-black; under surface
black, with the legs pale ferruginous; head fully three-fifths as wide as the
prothorax, the eyes prominent, the strioles fine, parallel; antennae pale
ferruginous, long, almost equaling the head and prothorax. the latter
one-half wider than long, the sinuate apex with broadly obtuse angles
and not quite as wide as the base; sides broadly and evenly rounded
almost to the base, becoming very briefly sinuate at the angles, which
are slightly acute and very sharp; margins abruptly and strongly re-
flexed, feebly punctulate; surface with a few fine scattered punctures
apically, the basal fovese large, deep, feebly divided and with moderate
punctures extending entirely across as usual; median stria subentire,
the carinae strong and rather narrow; elytra equal in width to the pro-
thorax, three-fifths longer than wide, parallel, with feebly arcuate sides;
striae rather fine but deep, with the punctures relatively coarse and much
wider than the striae, distinct to the apical declivity; lateral series moder-
ately interrupted, the subapical sinus rather broad and shallow; inter-
vals nearly flat except at apex. Length (ij1) 10.3 mm.; width 3.8 mm.
Montana (Billings), — Shantz.

This species is evidently allied to infaustus Lee., but has the
elytra blue-black, with a very long scutellar stria — said to be moder-
ate in infaustus by Hayward; the two basal joints of the hind tarsi
have each a very faint external stria, only traceable toward base.
There are some coarse punctures at the sides of the metasternum
and on the met-episterna ; the latero-basal parts of the abdomen are
finely punctate. The transverse thoracic impressions are said by
Mr. Hayward to be obsolete in infaustus, they are very evident in
the present species.

The two following species received from Mr. Sherman a few years

AMARIN/E 231

ago are hitherto undescribed and the present opportunity is taken
to define them :

Curtonotus labradorensis n. sp — Body elongate, parallel, black, mod-
erately shining, not at all metallic, the elytra sometimes brownish; legs
piceo-rufous; head well developed, with prominent eyes and deep linear
strioles; antennae (o71) as long as the head and prothorax, ferruginous;
prothorax two-fifths wider than long, the apex sinuate and with broadly
rounded angles, subequal to the base in width, widest at the middle, the
sides evenly rounded, becoming sinuate and subparallel for some dis-
tance before the angles, which are slightly more than right though sharp;
foveal region coarsely punctate, the punctures fine and obsolescent api-
cally and also medio-basally; foveae rather long, linear, never wholly
confluent, the carinae short and obtuse; elytra nearly two-thirds longer
than wide, not (cf ) or quite evidently (9 ) wider than the prothorax, the
striae moderately coarse to finer or less impressed, always distinctly
punctate, the lateral series very widely interrupted; surface (9 ) slightly
alutaceous. Length (cf 9) 9.8-10.8 mm.; width 3.65-4.0 mm. Labra-
dor (\V. St. Modest). Eight examples.

•

There is some variation in the degree of impression of the elytral
striae, flatness of the intervals, coarseness of the punctures and length
of the scutellar stria. The middle tibiae of the male are very broadly
swollen on the inner posterior side, the two subapical denticles on
the inner side small. The species may be placed near hudsonicus
Hayw., but it is larger in size and not in the least metallic. The
basal joints of the hind tarsi are grooved externally.

Curtonotus scrutatus n. sp. — Elongate, rather more convex and smaller,
shining, black to piceous-brown, the legs piceous or paler; head smaller
than in the preceding but otherwise nearly similar, the eyes rather large
and prominent; prothorax nearly similar, the foveae rather longer and
still more linear; elytra nearly similar in outline, striation and punctu-
ation but more convex and, in the male, distinctly wider than the pro-
thorax. Length (c/1) 9.0-9.5 mm.; width 3.2-3.35 mm. Labrador (W.
St. Modest). Two examples.

This species while allied rather closely to labradorensis, differs in
its narrower form, more convex surface, smaller head and espe-
cially in the conformation of the middle tibiae of the male, which,
from a posterior viewpoint, are not very broadly swollen within
but more slender and only very obtusely thickened just below the
middle; the tooth itself is more prominent and acute however; it
may be placed next to labradorensis.

There are numerous species allied to brunnipennis Dej., from the
more southern localities of the continent; those at hand may be
differentiated among themselves as follows:

232 MEMOIRS ON THE COLEOPTERA

Elytra dark brown in color. Body larger, rather stout, black, moder-
ately shining, the elytra alutaceous in the female; under surface
black, the legs rufo-piceous; head two-thirds as wide as he prothorax,
the strides large, elongate and broadly impressed; antennae piceous,
the basal joint rufous; prothorax a little less than one-half wider
than long, as wide at base as at the deeply sinuate apex, widest at
about the middle, with evenly arcuate sides from apex to base; mar-
gins rather broadly reflexed and punctulate; foveae strongly punc-
tate, feebly half divided, the carinae strong; elytra one-half longer
than wide, barely visibly wider than the prothorax, the striae mod-
erate and with distinct punctures, the broad intervals nearly flat,
not more convex at apex. Length (9) 10.5 mm.; width 4.2 mm.
Labrador (Nain) brunnipennis Dej.

Elytra rather bright rufous. Body smaller and distinctly more slender,
moderately shining, the elytra dullish, deep black, the legs virtually
black; head three-fifths or more as wide as the prothorax, the strioles
small, fine; antennae blackish, the two basal joints paler; prothorax
two-fifths to one-half wider than long, widest distinctly before the
middle, the sides similarly subevenly rounded to the base but much
more finely reflexed and less punctate; apex sinuate, with broadly
rounded angles; surface impunctate anteriorly, the foveae smaller
than in brunnipennis, coarsely punctate, the inner barely traceable;
carinae shorter and more obtusely convex; elytra two-thirds longer
than wide, a fifth or sixth wider than the prothorax, ogivally rounded
from slightly behind the middle, the striae fine and very finely punc-
tulate; intervals nearly flat; lateral series of ocellate punctures ex-
tremely widely interrupted. Length (cf 9 ) 7-8-9-5 mm.; width
2.75-3.75 mm. Colorado. Eleven examples rubripennis n. sp.

Elytra not paler; upper surface uniform in color throughout 2

2 — Thoracic foveae small, only slightly elongate and completely isolated,
having but few punctures. Body rather elongate, only moderately
convex, blackish-brown and moderately shining, the under surface
and legs rufo-piceous; head two-thirds as wide as the prothorax,
with notably prominent eyes and small fine strioles; antennae pice-
ous, the one or two basal joints rufescent, moderate in length, stout,
with rather short joints; prothorax two-fifths wider than long, widest
before the middle, the rather finely reflexed sides as in the preceding;
apex shallowly sinuate but with less broadly obtuse angles; elytra
three-fifths longer than wide, a fifth or sixth wider than the pro-
thorax, parallel, with feebly arcuate sides; striae fine and more or
less finely punctate. Length (9) 8.0-9.5 mm.; width 3.0-3.5 mm.
New Hampshire (summit of Mt. Washington). Two examples.

deficiens n. sp.

Thoracic foveae larger and closely punctate, either wholly coalescent or
feebly divided 3

3 — Body narrow and very elongate, notably convex, deep black above
and beneath, the legs obscure rufous; surface moderately shining;
head two-thirds as wide as the prothorax, with prominent eyes and
small fine strioles; antennae fusco-ferruginous throughout, the joints
much more elongate than in deficiens, the medial on the edge fully

AMARIN^E 233

twice as long as wide; prothorax feebly transverse, a fourth to third
wider than long, with very evenly rounded, finely but strongly reflexed
sides, widest barely before the middle; apex equal in width to the
base as in the others of this section, feebly sinuate, with obtusely
rounded angles; fovese large, rather deep, coarsely punctate and com-
pletely coalescent as a rule, the carinse short but distinct, moderately
elevated; elytra elongate, fully three-fourths longer than wide, never
more than barely visibly wider than the prothorax, very gradually
ogivally rounded behind, the sides parallel and arcuate; striae rather
fine but impressed and conspicuous, finely punctate; intervals feebly
convex. Length (cf 9 ) 8.5-9.2 mm.; width 3.2-3.4 mm. New

Hampshire (Mt. Washington). Five examples argutus n. sp.

Body somewhat as in argutus but shorter and less convex, rather shining,
similar in coloration; head similar and with very prominent eyes,
the strioles short, rather more punctiform; antennae almost similar;
prothorax much shorter and more transverse, though not quite one-
half wider than long, otherwise nearly as in deficiens, except that
the sides become oblique and subsinuate toward base, and the foveae
are more completely divided and with fewer punctures; elytra shorter
and not quite so convex, three-fifths longer than wide, evidently
wider than the prothorax; striae and punctures nearly similar.
Length (9) 8.4 mm.; width 3.0 mm. New Hampshire (summit of
Mt. Washington). One specimen inanis n. sp.

Most of these forms seem to have been under observation by
Mr. Hayward, but were not definitely characterized; it is rather
singular that three of them should be found within the narrow con-
fines of the White Mts., of New Hampshire, but I am unable, under
present evidence, to consider them specifically identical, or in some
cases as even closely related. One of them may have possibly been
identified by LeConte as hyperborea Dej., but in such case not cor-
rectly.

Stereocerus Kirby

My four examples of the remarkably isolated hcematopus Dej.,
forming the type of this genus, are all females, and I have drawn
the male characters stated in the above table of genera from the
work of Mr. Hayward. There is a distinct habital difference be-
tween hcematopus and Curtonotus proper, so far at least as concerns
the American fauna, and I have but little doubt of the necessity
for generic separation. These habital peculiarities relate especially
to the more ventricose form of the body and to the shining metallic
lustre. The structural features enumerated above seem, in con-
junction with the habital differences, to be decisive. The exam-

234 MEMOIRS ON THE COLEOPTERA

pies in my cabinet were taken at West St. Modest, Labrador, by
Mr. Sherman.

Leiocnemis Zimm.

The typical American species of this genus is the well known
Zabrus avidus of Say, subsequently placed in the genus Pelor, of
Bonelli, and still later described by Dejean as Amara confinis. It
has somewhat the aspect of a Bradytus of the exaratus type, though
with much shorter prothorax, which is also much more sinuate at
the sides basally — even more so than in Bradytus apricarius. The
absence of pubescence on the inner side of the posterior male tibiae
is not a positive bar to its assignment to Bradytus, as this feature
is extremely variable in that genus, and, in Bradytus cequalis, there
is no more vestige of such pubescence than in Leiocnemis avida.
Leiocnemis can however be maintained as distinct from Bradytus
on other grounds. The margination of the prosternal lobe, for ex-
ample, is extremely feebly denned, and in some examples exists
hardly more than in Curtonotus; then again, the pronotal sides are
rather broadly reflexed, a condition present in no Bradytus known
to me. The mentum tooth in avida is short, broad and trapezi-
form, the apex not even evidently sinuate. The male prosternum
has a small and unimpressed area of very fine punctures, as in many
species of Celia, as well as Bradytus. The species is rather abun-
dant from Nova Scotia to Colorado.

Bradytus Zimm.

Although without much doubt valid as a genus, Bradytus is even
less consistent in uniformity of characters usually relied upon in
defining genera, than any other of the Amarinse. The mentum
tooth varies from narrowly triangular, with truncate apex, as in
apricarius, to an extremely broad, short and widely trapeziform
shape, as in exaratus, or either sinuato-truncate or bilobed, as in
most of the species. The male has a small oval punctured pro-
sternal area in the majority of species, but in nainensis and prob-
ably also in glacialis this is much modified, and in immundus it is
wanting. Usually the scutellar stria is without attendant anterior
fovea, but in immundus this is present; this character is, however,
inconstant also in Amara and Tricena. The most persistent, and
in fact the only decisive generic characters, are the submedially

AMARIN.E 235

widest prothorax and the pubescent inner surface of the posterior
male tibiae, the latter a character reproduced exactly however in
Amara and Tritzna.

In regard to the general form and habitus of the body, there are
four subgeneric groups as follows :

Body very stout and convex, oblong-oval, with notably coarse and deeply
impressed striae and very convex intervals I (exaratus)

Body less stout, with finer and less impressed striae, the intervals flat or
but slightly convex 2

2 — Body narrow and elongate, the sides of the prothorax distinctly sin-
uate at base II (apricarius)

Body less narrow to somewhat stout, the sides of the prothorax never
distinctly sinuate at base 3

3 — Prothorax relatively very short, with the sides oblique and nearly
straight in about basal half, the carinae obsolete; prosternum of the
male with a large medial unimpressed area of diffused punctures;
colors metallic Ill (nainensis)

Prothorax longer, the sides subevenly arcuate from apex to base, the
carinae usually distinct; prosternum with an elongate-oval and sub-
impressed punctured area in the male, wanting in immundus; colors
never metallic IV (latior)

As may be seen these groups are based chiefly upon habitus, but
this is so marked as to identify the various groups at first sight.
The species are not numerous and those at hand may easily be
recognized as follows:

Group I

The punctate prosternal area of the male is not impressed, though
well defined, and in that sex the anterior tarsi are but feebly di-
lated, contrasting greatly with the broad dilatation in Curtonotus;
the dilated joints have each a small quadrate subapical pale mem-
branous lamina beneath. The inner side of the posterior male
tibiae has but very few stiff hairs, sometimes scarcely discoverable.
We have several species as follows :

Body larger, very stout. Oblong-oval, very convex, piceous-black, the
legs obscure rufous; upper surface highly polished throughout in
both sexes; head three-fifths as wide as the prothorax, the eyes large
but not very prominent, the strioles fine and short; antennae slender,
obscure ferruginous, not extending to the thoracic base; prothorax
barely one-half wider than long, subparallel, widest at the middle;
apex sinuate, narrower than the base, with bluntly rounded angles;
base transverse, feebly sinuate at each side; sides broadly and sub-
evenly arcuate, becoming gradually feebly sinuate toward the hind

236 MEMOIRS ON THE COLEOPTERA

angles, which are minutely sharp and prominent; transverse impres-
sions distinct, the anterior not punctate; foveae large, two at each
side, punctate, the carinae short but strong; margins not widely but
abruptly reflexed; elytra a fourth longer than wide, barely at all
wider than the prothorax, obtusely rounded in apical two-fifths, the
coarse and deeply impressed striae strongly punctate, the intervals
very convex; scutellar stria wanting, represented by about two iso-
lated punctures. Length (9) 10.0 mm.; width 4.7 mm. Kansas
(Douglas Co.), — Dyche gravidus n. sp.

Body smaller, not so stout; scutellar stria generally evident though very
short 2

2 — Punctured area of the male prosternum broadly oval and feebly im-
pressed; body shorter, the elytra barely more than twice as long as
the prothorax. Lustre and coloration nearly as in the preceding;
head nearly similar, but with rather more prominent eyes, the slen-
der antennae pale ferruginous, extending to the thoracic base (cf )
or a little shorter (9); prothorax nearly similar but shorter, fully
one-half wider than long, more strongly arcuate at the sides, the
latter h,owever not becoming sinuate basally, except just visibly at
the angles, which are acute because of the greater sinuation at the
sides of the base; surface similar; elytra scarcely a fourth longer than
wide, not at all wider than the prothorax, very obtuse at tip but more
angulate toward the suture, the subapical sinus small and feeble as
usual in this section; striation similar; interrupted punctures of the
eighth stria more on and less to the outer side of the stria than in
gravidus. Length (d* 9 ) 7-3~7-5 mm.; width 3.3-3.4 mm. Mis-
souri (St. Louis). Two examples taken by the writer. . curtus n. sp.

Punctured area of the male prosternum very narrow and elongate; ely-
tra longer, distinctly more than twice as long as the prothorax ... 3

3 — Body broader, very convex, polished, piceous-black to ferruginous
ih color as usual, the under surface more piceous, the abdomen rufes-
cent; legs dark rufous; head as in the two preceding; antennae nearly
similar, ferruginous; prothorax only two-fifths wider than long or
less, the sinuate apex with rounded angles, slightly narrower than
the base; sides abruptly evenly reflexed and evenly rounded from
apex to base, the angles slightly more than right but very sharp,
not prominent; transverse impressions feeble; surface almost com-
pletely impunctate, the two foveae at each side of the base widely
separated, isolated and having each a few coarse punctures, the
outer fovea much the shorter, the carinae very short, obtuse; elytra
fully two-fifths longer than wide and always distinctly wider than
the prothorax in both sexes, obtusely ogival in apical third; lateral
series widely interrupted; striae less coarse or deeply impressed than
in the two preceding, the intervals less convex: scutellar stria short,
disintegrated as a rule. Length (cf 9 ) 7.8-9.0 mm.; width 3.3-4.1
mm. New York (Long Island) and North Carolina (Asheville) to
Kansas. Abundant. [Amara furtiva Say] exaratus Dej.

Body slightly smaller, narrower and more parallel, deep black above,
more piceous-black beneath, the legs osbcure rufous; head and an-
tennae nearly similar, the strioles deep, oblique; prothorax similar,

AMARIN^E 237

except that the margins are more finely reflexed and the surface
near the foveae with finer and more numerous diffused punctures,
the foveae much feebler, more linear, the inner long, the outer very
short, the carinae extremely short and rather feeble; elytra a third
longer than wide and barely visibly wider than the prothorax, al-
most as in exaratus throughout, except that the striae are relatively
rather coarser, more deeply impressed and somewhat more coarsely
punctate. Length (cf) 8.0 mm.; width 3.4 mm. Pennsylvania.

stygialis n. sp.

The species described by Say under the name A mara furtiva was
considered distinct from exaratus by LeConte, but I am inclined
to agree with Hayward that is it merely founded upon pale examples
of that species; it is impossible, at least, to gain any further infor-
mation from the original description. It is possible of course that
furtivus may prove to be valid, as there are apparently a number
of distinct species in this group of the genus, as indicated above.
The convex apical marginal beading of the epistoma is more de-
veloped in this group than in the others.

Group II

But one species assignable to this group, very widely diffused
and mundane, has occurred thus far in our fauna. The male has
a small unimpressed oval prosternal area, which is very coarsely
and irregularly punctate; the anterior tarsi are only feebly dilated
and the terminal laminae beneath are thick and not membranous;
the inner side of the hind tibiae is flat and abundantly clothed with
suberect stiff hairs:

Form elongate, convex, polished, black, the under surface piceous, with
rufous abdomen and legs; elytra but feebly alutaceous in the female,
though micro-reticulate; head two-thirds as wide as the prothorax,
with prominent eyes and very short fine oblique strioles; antennae
ferruginous, extending slightly behind the thoracic base; prothorax
widest at the middle, less than one-half wider than long, the apex
feebly sinuate, with distinct and but slightly blunt angles, not quite
as wide as the base, which is transverse, feebly arcuate medially;
sides finely but strongly, evenly reflexed, moderately arcuate, be-
coming gradually rather feebly sinuate basally, the angles right,
with minutely prominent tip; surface impunctate except basally,
the foveae large, shallow, coalescent and coarsely punctate, the carinae
strong, moderately long; elytra one-half longer than wide, evidently
wider than the prothorax, with feebly arcuate sides; striae rather
coarse, impressed, strongly punctate to behind the middle, the scu-
tellar moderately long, the lateral series but moderately interrupted;

238 MEMOIRS ON THE COLEOPTERA

subapical sinus small and feeble; intervals feebly convex. Length
(cf 9 ) 6.7-7.7 mm.; width 2.7-2.9 mm. Rhode Island to Lake
Champlain and Lake Superior (Marquette and Duluth), also in
Europe and Siberia. Abundant apricarius Payk.

The metasternal punctures vary greatly in number, rarely be-
coming very close laterally.

Group III

There is also but a single species in this group known to me;
glacialis Mann., may however also be associated with it, although
Mr. Hayward states, presumably after observation of one of the
Kenai, Alaska, examples in the LeConte collection, that the male
prosternum in glacialis has no punctured area. There are also
many other specific differences, judging by the Hayward descrip-
tion. In nainensis the male has the diffused medial punctures of
the prosternum small, the anterior tarsi very moderately dilated,
each joint with two or three small erect lamellae beneath, and the
inner side of the hind tibiae has a very elongate area of not very
dense, long, stiff suberect hairs; the outer side of the first hind tarsal
joint is very faintly grooved, the second simple; it may be described
as follows:

Body rather stout, oblong-suboval, moderately convex, somewhat ven-
tricose, shining and aeneous in both sexes, the elytra faintly micro-
reticulate (cf) or strongly so (9); under surface black, the legs
black, the femora rufescent; head large, fully two-thirds as wide as
the prothorax; eyes prominent, the strioles coarsely foveiform (cf )
or fine and linear ( 9 ) ; antennae slender, longer than the head and
prothorax, deep black throughout; prothorax two-thirds wider than
long, the apex feebly sinuate and with bluntly rounded angles and
slightly narrower than the base, which is subarcuate medially; disk
widest slightly before the middle, the sides finely but strongly re-
flexed, arcuate, becoming oblique and faintly subsinuate posteriorly,
the angles much more than right, not rounded; surface smooth,
with scattered moderate punctures near the sides and sometimes
latero-apically, also finely medio-basally; foveae rather large, sub-
confluent and coarsely punctate (cf ), or smaller, more isolated and
with but few finer punctures (9); carinae wholly wanting; elytra
fully one-half longer than wide, a third to fourth wider than the
prothorax, parallel, with arcuate sides, gradually ogival in apical
two-fifths; striae moderate, evidently though not coarsely punctate,
the scutellar very moderate, the lateral series widely interrupted;
intervals flat, barely convex on the declivity, the sinus moderate,
shallow; punctures of the under surface variable. Length (cf 9 )
6.25-6.65 mm.; width 2.75-2.8 mm. Labrador (Nain), — Sherman.

nainensis n. sp.

AMARIN.E 239

The species glacialis Mann., was described originally from a single
specimen taken under a stone on the Kenai Peninsula of Alaska,
and, as represented by LeConte's Kenai examples, described by
Hayward, it differs from nainensis in its paler basal antennal joint,
in its obsolete and not distinct transverse pronotal impressions, in
the subacute and slightly prominent basal thoracic angles, in its
long scutellar stria and in having the two basal joints of the hind
tarsi grooved externally; its length is given as 6.25-8 mm. The
species described by Putzeys as glacialis, from a specimen in the
Chaudoir collection, is evidently a different thing; it was considered
a Curtonotus by that author.

Group IV

The species of this group are numerous and are rather homoge-
neous. As shown in latior, the male prosternum has an elongate
flattened area of moderate punctures, the anterior tarsi moderately
dilated, each joint with a relatively very small narrow apical lam-
ina, the coarse hairs within the hind tibiae rather few in number
and inconspicuous and the slender hind tarsi without external
grooves. As usual, there are two apical setigerous abdominal punc-
tures in the male and four in the female. Our species are the fol-
lowing so far as known :

Scutellar stria without an ocellate puncture 2

Scutellar stria with a small but distinct ocellate puncture; body small. .7
2 — Body narrow and elongate'. Shining and black above and beneath,
the legs obscure rufous, the anterior tarsi (cf) pale ferruginous;
surface convex; elytra (9 ) but slightly less shining; head two-thirds
as wide as the prothorax, with very prominent eyes and fine strioles;
antennae obscure ferruginous, slender, as long as the head and pro-
thorax, the latter widest at the middle, two-fifths (cf ) to one-half
(9 ) wider than long, the apex deeply sinuate, with prominent blunt
angles, much narrower than the base, which is transverse; sides
rather finely but strongly reflexed, evenly arcuate from apex to
base, the hind angles nearly right, sometimes feebly prominent; sur-
face smooth and punctureless, excepting the foveae, which are shal-
low, linear, well separated and moderately punctate, the carinae very
obtuse, the transverse impressions almost obsolete; elytra one-half
longer than wide, scarcely visibly wider than the prothorax, obtusely
ogival in apical third; striae moderate, slightly impressed and finely
not closely punctate, the scutellar moderate, the lateral series more
widely spaced but not interrupted medially; intervals nearly flat
even apically; metasternum with some coarse punctures laterally,
the episterna subimpunctate. Length (c? 9 ) 7.0-7.2 mm.; width

240 MEMOIRS ON THE COLEOPTERA

2.9 mm. Lake Superior (White-Fish Point), — Schwarz. [Amara
schwarzi Hayw.] septentrionalis Lee.

Body more or less stout in form 3

3 — Larger species, always well over 8 mm. in length, with a definite
though obtuse carina at the thoracic angles 4

Smaller species, under 8 mm. in length, without an external basal tho-
racic carina 5

4 — Form oblong-suboval, convex, polished black above and beneath;
legs black, the femora obscure rufous; elytra of the female not dis-
tinctly less shining; head three-fifths as wide as the prothorax, or
less (9); eyes prominent, the strides small, fine, antennae ferrugin-
ous, much shorter than the head and prothorax, the latter two-
fifths (cf) to one-half (9) wider than long, the apex rather deeply
sinuate, with prominent blunt angles, much narrower than the
base, which is slightly arcuate at each side, the sides narrowly but
strongly, evenly reflexed, evenly arcuate from apex to the basal
angles, which are minutely prominent; impressions nearly obsolete;
surface sparsely punctulate medio-basally, the foveae linear, widely
separated, having scattered moderate punctures; median stria much
abbreviated at apex; elytra one-half longer than wide and slightly
though evidently wider than the prothorax, gradually ogival in
apical two-fifths; striae rather strong though very moderately im-
pressed and distinctly, though not coarsely, punctured, the scutellar
oblique, moderate; lateral series very widely interrupted; intervals
but just visibly convex, not more so at apex. Length (cf 9 ) 8.4-
10.5 mm.; width 3.4-4.4 mm. New York (Lake Champlain) to
Illinois (Highland Park) and Lake Superior (Marquette and Duluth).
Abundant. [B. l&vistriatiis Putz.; also liber and oregonus Lee.]

latior Kirby

Form and general habitus nearly as in latior but not quite so elongate and
less deep black, the elytra faintly picescent, the under surface and
legs throughout somewhat obscure rufous, the former sometimes
blackish-piceous, similarly shining in both sexes and convex; head
not quite so large, less than three-fifths as wide as the prothorax,
otherwise nearly as in latior, the antennae similar; prothorax shorter,
fully one-half wider than long in both sexes, otherwise very nearly
as in latior, except that the foveae are more shallow; basal punctu-
ation similarly variable in amount; elytra one-half longer than wide,
still more evidently wider than the prothorax, rather more rapidly
and obtusely ogival behind, the sculpture subsimilar. Length (cf 9 )
9.0-9.4 mm.; width 3.8-4.1 mm. Arizona (Humphreys Peak).
Four examples. Named in honor of Andrew A. Humphreys, U. S.
Engineers humphreysi n. sp.

Form and habitus nearly as in the preceding, oblong, stout, convex,
black, less shining, the abdominal segments rufescent at apex; legs
obscure rufous; head larger than in the preceding, though scarcely
three-fifths as wide as the prothorax, the eyes moderate, prominent;
antennae ( 9 ) ferruginous, extending to about basal third of the
prothorax, which is as in humphreysi, except that the reflexed lateral
margins are feebly rufescent and the anterior angles still more broadly

AMARIN^E 241

rounded; elytra similar in outline and relative size, but differing in
having all the striae rather fine and much more finely punctate, the
flat intervals becoming more noticeably convex at apex; lateral
series less broadly interrupted. Length (9) 9-O mm.; width 3.9
mm. New Mexico deceptus n. sp.

5- — Upper surface in both sexes highly polished, as though glazed, the
elytra in the female without trace of alutaceous lustre or minute
sculpture. Body oblong-suboval, convex, deep black above and
beneath, the extreme abdominal tip rufous; legs rufous throughout:
head moderate, barely over half as wide as the prothorax, the eyes
moderately prominent; strioles fine, very oblique; antennae slender,
ferruginous, not quite as long as the head and prothorax, the latter
widest at about the middle, short, three-fifths wider than long, the
apex very feebly sinuate, with rounded angles and barely three-
fourths as wide as the base, which is transverse; sides evenly rounded
from apex to base, the angles distinctly more than right, not rounded
and not at all prominent, the margins finely reflexed; surface im-
punctate, except finely and sparsely at base, the median stria very
fine and feeble; foveae shallow, the inner linear, the outer short and
suboblique; elytra slightly more than one-half longer than wide,
about three times as long as the prothorax and somewhat wider,
the parallel sides broadly, subevenly arcuate; striae extremely fine,
unimpressed, minutely punctate suturally, impunctate elsewhere,
the scutellar rather long, nearly free; lateral series more or less nar-
rowly interrupted; sinus small and shallow; under surface subim-
punctate throughout. Length (9) 7.5 mm.; width 3.35 mm. Ari-
zona (Tucson), — Tucker specularis n. sp.

Upper surface shining but less glazed, the elytra alutaceous and distinctly
micro-reticulate in the female 6

6 — Body oblong-suboval, convex, black, the abdomen rufescent apically,
the legs piceo-rufous; head slightly more than half as wide as the
prothorax, with prominent eyes and narrow oblique strioles; anten-
nae ferruginous, much shorter than the head and prothorax, the
latter large, widest at about the middle, barely two-fifths wider than
long, the apex deeply sinuate, with rather narrowly blunt angles,
much narrower than the base, which is rectilinear; sides finely but
abruptly reflexed, evenly arcuate from apex to base, the basal angles
distinctly more than right, not rounded and not prominent; surface
with obsolete impressions, sparsely punctate apically and basally,
the foveae shallow, more punctate, the inner sublinear, the outer
smaller and rounded, distant from the base as usual in this subsec-
tion; elytra widest at the middle, scarcely one-half longer than wide,
parallel, with rather strongly and evenly arcuate sides, almost a
fifth wider than the prothorax, the humeri not exposed, minutely
denticulate; striae rather fine but deep, not impressed, finely punctu-
late anteriorly, the scutellar moderate; lateral series moderately
interrupted; intervals flat, alutaceous (9 ). slightly less flat apically;
sides of the metasternum, met-episterna and latero-basal parts of
the abdomen finely, sparsely punctulate; anterior tibiae with five
T. L. Casey, Mem. Col. VIII, Oct. 1918.

242 MEMOIRS ON THE COLEOPTERA

or six short stout external spinules apically. Length (9 ) 7-8 mm.;
width 3.5 mm. Colorado (Denver) relictus n. sp.

Body smaller and narrower, nearly similar in lustre and coloration, the
abdomen not rufescent apically; legs dark rufous; head not actually
larger, though almost three-fifths as wide as the prothorax, the eyes
and strioles nearly as in the preceding, the ferruginous antennae
still shorter; prothorax shorter, one-half wider than long, the sinuate
apex similarly narrower than the base, but with more obtusely
rounded angles; sides and basal angles nearly similar; surface less
smooth, transversely wrinkled toward the median stria, which is
much finer; apical parts without trace of punctures; foveal regions
finely, strongly punctate, the medio-basal part almost impunctate;
foveae nearly similar; elytra as in relictus but more gradually and
acutely ogival behind, one-half longer than wide, at the middle evi-
dently wider than the prothorax, the sides arcuate; striae similarly
fine but more impressed, almost completely impunctate, the scu-
tellar moderate, fine, the lateral series similar; scutellum broader;
intervals very feebly convex, not at all more so apically, less aluta-
ceous (9) than in relictus; metasternum and episterna impunctate;
anterior tibiae nearly similar. Length (9 ) 7.4 mm.; width 3.25 mm.
Colorado (Colorado Springs),- — Cockerell obsolescens n. sp.

Body much more parallel, the elytra less inflated, polished, black, the
legs obscure rufous, the femora piceous; head less than three-fifths
as wide as the prothorax, with prominent eyes and fine oblique
strioles; two basal joints of the antenna? ferruginous, the remainder
missing in the type; prothorax barely two-fifths wider than long,
widest at the middle, with the sides very evenly arcuate and finely,
strongly reflexed from apex to base, the basal angles but little more
than right, not rounded; apex distinctly sinuate, with rather well
rounded angles, much narrower than the transverse base; impres-
sions subobsolete, the median stria very fine; surface impunctate,
except finely, sparsely and deeply at the foveae, which are shallow
and nearly as in the two preceding; elytra two-fifths longer than
wide, only very little wider than the prothorax, the sides feebly arcu-
ate; striae moderately fine, evidently impressed and without obvious
punctures, the scutellar moderate, almost free, the lateral series
very moderately interrupted; intervals barely evidently convex;
under surface with very few fine punctures at the sides of the meta-
sternum. Length (d71) 7.5 mm.; width 3.25 mm. Mexico (Colonia
Garcia, Sierra Madre Mts., Chihuahua), — Townsend.

*aequalis n. sp.

7 — Form oblong-suboval, very moderately convex, black, the legs rufo-
piceous; surface highly polished, with a varnish-like glaze; head
nearly three-fifths as wide as the prothorax, the eyes unusually
large, rather prominent; strioles very small, linear; antennae extend-
ing to the thoracic base, colored differently and as in Amara, piceous-
black, the three basal joints and base of the fourth bright testaceous;
prothorax one-half wider than long, widest just behind the middle
apex moderately sinuate, with obtuse blunt angles and scarcely more
than three-fourths as wide as the base; sides subevenly rounded

AMARIISL-E 243

from apex to base and finely, abruptly reflexed, the angles minutely
subprominent; impressions very feeble, the stria very fine; surface
completely impunctate; foveae extremely feeble but otherwise as in
the preceding, impunctate; elytra rather more than one-half longer
than wide, not distinctly wider than the prothorax, the parallel
sides feebly arcuate; striae fine, very feebly impressed, not evidently
punctate, the scutellar rather long, extremely fine and feeble; lateral
series somewhat widely interrupted; hind tibiae (cf) with rather
numerous fine suberect hairs within; under surface impunctate.
Length (cf ) 5.8 mm.; width 2.35 mm. California (Gualala, Mendo-
cino Co.) immundus n. sp.

The posterior tibiae of the male in cequalis are absolutely devoid
of internal pubescence but, as the facies is entirely as in the neigh-
boring species, I cannot transfer it to Celia, where the prothorax
would be incongruous. So also in immundus, nearly all the char-
acters are those of Amara, excepting the more erect and stiffer in-
ternal hairs of the posterior male tibiae; the ocellate puncture of
the scutellar striae and the coloration of the antennae, are to be
particularly noted in this comparison; the facies of the body, how-
ever, is exactly as in the other species of the fourth group of Brady-
tus. All this serves to indicate that general habitus of the body is
the criterion of chief importance in estimating genera in the Amar-
inae, but this habital character is extremely important and in my
opinion decisive.

If the genus Bradytus is to be maintained, as I believe to be war-
rantable, the name septentrionalis of LeConte, is to be restored.
The synonymy given above under latior is derived from the work
of Hayward; its correctness is demonstrable in the case of Icevistri-
atus and liber, but I am doubtful in regard to oregonus.

Percosia Zimm.

This is really one of the better defined and more consistent groups
of the Amarinae, though wholly disregarded and united with Celia
by Horn. • In habitus it contrasts strongly with Celia in its much
larger size of body, of oblong-oval form and thicker, denser integu-
ment. In the cluster of setae on the prosternal process it is appar-
ently unique in the Amarine series. The absence of pubescence
along the inner side of the posterior male tibiae distinguishes .it
from Amara, where this pubescence is always fine, decumbent and
dense, but in the Amarinae at large the character is not so important.

244 MEMOIRS ON THE COLEOPTERA

The mentum tooth in Percosia is large, triangular, with the apex
deeply and sharply bidentate, the ligula corneous and very long,
tapering gradually from apex to the narrow base. The middle
tibiae are slightly bent at the middle in the male. The five species
of the American fauna may be knoMrn as follows:

Latero-basal carina of the pronotum very oblique 2

Latero-basal carina subparallel with the side margin and, posteriorly,
more remote from the angles than in the preceding section 5

2 — Eyes nearly flat, only very slightly convex. Body narrower and less
stout than in obesa, black throughout, the legs black; surface shining,
the elytra densely alutaceous or subopaque; head scarcely more
than half as wide as the prothorax, the strioles short; antennae slen-
der, almost as long as the head and prothorax, fuscous; prothorax
longer than usual, scarcely more than a third wider than long; apex
feebly sinuate, much narrower than the base; sides parallel in about
basal half, rounding anteriorly, rather broadly reflexed and punctu-
late, more narrowly at apex; basal angles right; impressions very
feeble; median stria broadly impressed, obsolete at apex; foveae
large, shallow, completely confluent and not separately distinguish-
able, and having many strong deep punctures extending across the
middle; elytra one-half longer than wide, fully a fifth wider than the
prothorax, parallel, with arcuate sides; striae abrupt and groove-
like, evidently punctured, the scutellar long; lateral series not at all
interrupted; intervals flat, feebly convex apically. Length (9)
10.5 mm.; width 4.7 mm. Colorado (Denver). Nebraska — Le-
Conte diffinis Lee.

Eyes not prominent, though much more convex than in the preceding;
prothorax shorter and much more transverse 3

3 — Body narrower and more elongate, the elytra more than one-half
longer than wide; pronotal foveae broadly and completely confluent.
Coloration and lustre nearly as in the preceding; side margins of
the pronotum diaphanously rufescent; legs piceous-black; head simi-
lar, except that the eyes are rather more convex and the ferruginous
antennae not so long; prothorax one-half wider than long, otherwise
nearly as in the preceding; transverse impressions rather distinct;
elytra more elongate than in any other and but very little wider
than the prothorax, with the sides evenly arcuate; striae moderately
coarse, groove-like, rather feebly punctate, the lateral ocellate se-
ries as in the preceding; intervals nearly flat, densely alutaceous in
the female, distinctly convex posteriorly. Length (9) 10.3-11.0
mm.; width 4.7-5.0 mm. Oregon (Clackamas Co.). . extensa n. sp.

Body obese, the elytra generally less than one-half longer than wide; pro-
notal foveae never completely confluent, generally very distinctly
defined, isolated and less closely punctured 4

4 — Coloration nearly as in the preceding, the tarsi rufescent; head as in
extensa but relatively not quite so large; prothorax also nearly simi-
lar but even less sinuate at apex, the rounded sides becoming nearly
straight behind the middle and strongly reflexed and punctulate;

AMARIN/E 245

elytra more obtusely rounded behind and much more distinctly
wider than the prothorax, with feebly arcuate sides and deep mar-
ginal gutter, very opaque ( 9 ) or polished (cf ), the striae (9 ) finer,
feebly impressed and finely punctate, coarser (cf) and more abruptly
groove-like and also with more convex intervals; lateral series un-
interrupted; subapical sinus shallow; anterior tarsi (cf) broadly
dilated, the first three joints each with two oblique series of very
stout and erect, setiform fulvous squamules beneath. Length (cf 9 )
9.0-12.0 mm.; width 4.3-5.3 mm. Lake Superior (Bayfield and
Marquette) and New York; also an unlabeled example from the
Levette collection. Moderately abundant. The male and female
both have two setigerous fovese at each side of the apex, the pairs
closer in the male; it is allied to the European patricia Duft., but is
apparently by no means the same species obesa Say

Coloration generally rather more rufo-piceous in the female, where the
elytra are opaculate; they are black and with varnish-like polish
throughout in a male assumed to be of this species but without
locality label; head one-half as wide as the prothorax, of the usual
structure, the eyes well developed but not very convex; prothorax
one-half to three-fifths wider than long, with general form and struc-
ture as in obesa, but more transverse and with the side margins still
more broadly, strongly reflexed and usually more completely attain-
ing the base outside of the carina; elytra two-fifths longer than wide,
barely visibly wider than the prothorax, the striae coarse, groove-
like and at the same time impressed, being much coarser, deeper
and more strongly punctate than in the female of obesa. Length
(9) 11.7 mm.; width 5.6 mm. Northern Illinois (Highland Park).

latissima n. sp.

5 — Form short, very stout, ventricose, convex; coloration and lustre as
in obesa, the elytra opaculate in the female; head half as wide as
the prothorax, the eyes more prominent than usual, the antennae
obscure ferruginous, not quite extending to the thoracic base; pro-
thorax slightly less than one-half wider than long, as in obesa, except
that the sides are more widely reflexed toward base, where the ob-
tuse carina is less oblique than usual, and, more especially, abbre-
viated well before the basal margin; foveae large, shallow, imper-
fectly separated; elytra barely two-fifths longer than wide, about a
fifth wider than the prothorax; parallel and arcuate at the sides,
striae rather strongly impressed, not fine and with the«strong punc-
tures crenating the convex intervals; sides of the metasternum, the
met-episterna and the abdomen latero-basally with numerous mod-
erate equal punctures. Length (9) 10.5 mm.; width 5.0 mm.
New York (Long Island) ventricosa n. sp.

While all the above forms adhere closely to a common generic
facies, I feel quite certain that they differ specifically from each
other. The single male placed with the type of latissima was un-
labeled in the Levette collection and has the surface highly polished
— as though glazed — throughout above; it is not deep black and

246 MEMOIRS ON THE COLEOPTERA

has scarcely perceptible senescent lustre; the elytral intervals are
perfectly flat, while in the other species the intervals are distinctly
convex in the male, though flat in the female. The elytra in this
male example are notably wider than the prothorax. I have not
seen fortis Lee. — shining in both sexes, said by Horn to belong to
this genus.

Celia Zimm.

This is by far our largest genus of the Amarinae and only an in-
significant fraction of the species have been described. The body
is very moderate in size and includes some of the smallest species
of the subfamily; the coloration is frequently pale, even when mature,
with the integuments rather thin, sometimes almost diaphanous,
although the erratica and californica groups have dense integu-
ments as in Amara. The mentum tooth is bidentate, the prosternal
lobe always sharply and rather finely margined and the middle
tibiae unmodified sexually; the posterior male tibiae are not pubes-
cent within. The anterior strioles of the head are fine and moder-
ate, sometimes feebly oblique. In our fauna there are six well de-
fined subgeneric groups, each easily recognizable by reason of gen-
eral habitus; they may be defined as follows:

Legs black; body oblong-oval, with dense and frequently metallic integu-
ments; prosternum not evidently modified in the male; facies some-
what as in Amara; the pronotum wholly impunctate. ... I (erratica)

Legs not black 2

2 — Prosternum with an elongate opaque central impression in the male;
integuments dense; body oblong-oval; pronotum nearly as in the
preceding group, impunctate II (californica)

Prosternum of the male with an unimpressed central spot, which is very
finely punctulate 3

Prosternum of the male unmodified or with vestigial punctulate spot. .4

3 — Anterior male tarsi strongly dilated; sides of the prothorax straight
or subsinuate basally; integuments dense; body parallel, the pro-
thorax less abbreviated Ill (rectangula)

Anterior male tarsi moderately to feebly dilated ; prothorax more abbre-
viated, the sides arcuate to the base; body oblong-oval; integuments
thin and paler as a rule IV (remotestriata)

4 — Body more elongate, subparallel, with metallic lustre and usually
dense integument, the elytral striae always very fine, generally im-
punctate V (aurata)

Body less elongate, more oblong-oval, never having pronounced metallic
lustre and with the integuments generally thinner and more or less
pallid; elytral striae less fine and more impressed as a rule and usu-
ally distinctly punctate; species including the smallest of the genus.

VI (rubrica)

247

The erratica group is spread widely over the subarctic parts of
the northern hemisphere; the strial intervals are usually somewhat
irregularly elevated, at least in part. The calif ornica group seems
to be confined to the western parts of North America, extending
southward through most of Mexico. The rectangula group com-
prises at present but a single peculiar species, confined to the Pacific
regions. The remotestriata group contains a great many usually
pallid species, of more or less robust form, widely distributed over
the northern hemisphere. The aurata and rubrica groups seem to
be peculiarly North American, the former confined to the Pacific,
the latter to the Altantic, regions; one species of the rubrica group
occurs in British Columbia and one each in Arizona and Chihuahua;
no species of the aurata group occurs far from the Pacific coast line.

Group I

The antennae in this group are black, as well as the legs, although
the antennal base is often paler in color. The species are rather
numerous, the group extending far into Mexico; those at hand may
be known as follows :

Body stouter; head better developed, always at least somewhat more

than half as wide as the prothorax 2

Body narrower, the size smaller as a rule; head notably smaller, never

more than half as wide as the prothorax in either sex 8

2 — Upper surface with pronounced metallic lustre 3

Upper surface without metallic lustre 5

3 — Pronotum rather distinctly depressed externally toward base; strial
intervals remarkably irregular. Body oblong, very moderately con-
vex, rather shining, the elytra strongly alutaceous in the female;
color of the upper surface varying from bright bronze to dark green;
legs black, the femora faintly rufescent; head evenly convex, with
rather prominent eyes, the strides small, linear and oblique; anten-
nae black, slender, the two basal joints dark rufous; prothorax less
abbreviated than in the four following and three-fifths wider than
long, the sinuate apex much narrower than the base; stria very fine,
much abbreviated; surface with a feeble striiform impression at
basal third, nearer the middle than the sides and, nearer the angle,
one that is feeble and oblique; basal angles right, not blunt, the
puncture equidistant from base and side, the anterior puncture at
two-fifths from the blunt but prominent apical angles; elytra less
than one-half longer than wide, very slightly wider than the pro-
thorax, the sides feebly arcuate; apex ogivally lobed at the middle;
striae very fine, impunctate, the scutellar long, the lateral ocellate
series moderately interrupted; intervals alternately rather elevated

248 MEMOIRS ON THE COLEOPTERA

and irregularly nodulate to greater or less degree. Length ( 9 ) 9.3
-9.5 mm.; width 4.2 mm. Pennsylvania. Two examples. [Amara
splendida Hald. and incequalis Kirby] patruelis Dej.

Pronotum never noticeably depressed externally; strial intervals smooth
to faintly irregular in surface 4

4 — Form oblong-oval, moderately convex, bright green in color through-
out above, piceous beneath, the legs black; elytra rather shining
though somewhat alutaceous in the female; head as in the preceding,
with prominent eyes, the strioles rather deep, well developed and
very oblique; epistoma evenly sinuate at tip; antennae slender, the
medial joints two and one-half times as long as wide, black, the basal
joint alone rufescent; prothorax nearly four-fifths wider than long;
apex with rather prominent though slightly blunt angles, deeply
sinuate and much narrower than the base, the sides subevenly and
moderately arcuate, becoming almost parallel basally, finely re-
flexed; surface very slightly less convex postero-externally, the stria
and impressions nearly as in the preceding; elytra fully one-hall
longer than wide, with very feebly, evenly arcuate sides, at the
middle only just visibly wider than the prothorax, the apex sub-
evenly, rather obtusely rounded, the sinus distinct; striae and lateral
series as in patruelis, the intervals nearly smooth and subequal,
though there is a scarcely observable alternation in convexity, nearly
flat as a rule; beneath wholly impunctate as usual in this section.
Length (9) 8.4-8.6 mm.; width 3.7-3.75 mm. Two examples.
Arizona (southern),- — F. H. Snow lauta n. sp.

Form somewhat stout, oblong-oval, rather convex, bronzed above, black
beneath, the coxae obscure rufous; elytra shining, alutaceous in the
female, with strong micro-reticulation; head convex, smooth, with
well developed but only moderately prominent eyes, the strioles
very small, widely separated and oblique; antennae black, the two
basal joints rufescent, the medial joints on the compressed side less
than twice as long as wide; prothorax as in lauta, almost twice as
wide as long; anterior lateral fovea similarly a little before posterior
third; side margins even more finely reflexed; elytra similar in size
and relative proportion, also similar in the fine striae, but different
in having the striae feebly impressed, the intervals consequently
feebly convex and, more especially, in the form of the subapical
sinus, which is small and moderately deep in lauta, but very much
broader and relatively shallower in the present species; under sur-
face punctureless; tarsi long. Length (9 ) 8.3 mm.; width 3.8 mm.

Utah (Provo), — Wickham formalis n. sp.

Farm more parallel and oblong, smaller in size and less convex than in
either of the two preceding; lustre dull bronze above; head moder-
ate, just visibly more than half as wide as the prothorax, the eyes
very moderately convex; strioles small, fine and oblique; antennae
black, with the first joint pale, extending to the thoracic base,
shorter (9 ). the middle joints on the narrow edge between two and
three times as long as wide; prothorax barely visibly less than twice
as wide as long, in outline and surface nearly as in the preceding,
the outer of the postero-lateral impressions extremely shallow and

249

not at all oblique or linear, the inner short and striiform; elytra
rather narrower, one-half longer than wide, scarcely visibly wider
than the prothorax, less convex, the subapical sinus small and rather
abruptly formed, much less broad and shallow than in formalis;
striation similar, the alternate intervals rather more notably con-
vex; apex more ogivally lobiform; scutellum smaller. Length (cf 9 )
7.6-8.2 mm.; width 3.5-3.7 mm. New Mexico (Jemez Springs,
Sta. Fe and Fort Wingate) and Colorado (Boulder Co.).farcta Lee.

Form nearly as in farcta but much smaller and distinctly narrower,
bright brassy-bronze in lustre; under surface with polished greenish
lustre; legs rufo-piceous, the femora black; elytra alutaceous in the
female, though micro-reticulate in both sexes; head slightly more
than half as wide as the prothorax, with moderately convex eyes
and well developed, somewhat irregular strioles; antennae rather
stout, black, with rufous basal joint, the medial joints on the com-
pressed side one-half (cf ) to a third ( 9 ) longer than wide; prothorax
short, very nearly twice as wide as long; apex deeply sinuate, with
prominent and only narrowly blunt angles, much narrower than the
base; sides finely reflexed, subevenly and feebly arcuate, scarcely
parallel basally; inner subbasal striole fine, short and subobsolete,
the outer small, fine, oblique and barely evident; transverse impres-
sions distinct; elytra nearly one-half longer than wide, at the middle
slightly wider than the prothorax, the sides arcuate, gradually ogival
in more than apical third; striae fine, impunctate, the scutellar mod-
erate, the lateral series narrowly interrupted medially; intervals
nearly flat, the marginal greenish; subapical sinus small but rather
deep. Length (cf 9 ) 7.2-7.7 mm.; width 3.2-3.3 mm. California
(Truckee). Two examples taken by the writer finitima n. sp.

5 — Antennae with the basal joint alone paler. Form oblong, rather de-
pressed, feebly shining, the elytra alutaceous, black, the under sur-
face shining and with pronounced greenish lustre; legs, coxaa and
trochanters black, sometimes partially with feeble piceous tinge;
head convex, the eyes rather large but feebly convex; strioles longer
than usual, deep and sometimes inflated internally; antennae not
very slender, short, black, with rufous basal joint, extending to
about basal third of the prothorax in the female; prothorax fully
three-fourths wider than long, the sides very gradually converging
and feebly arcuate from base to apex, the latter sinuate, with prom-
inent and scarcely at all blunt angles and much narrower than the
base; basal angles right, not rounded; surface nearly smooth, the
inner striole short, the outer diffused and feeble; elytra less than one-
half longer than wide, slightly wider than the prothorax, the sides
evenly arcuate, the sinus wide and rather deep, not abrupt; striae
very fine, impunctate, the scutellar long; lateral series narrowly or
only partially interrupted; intervals nearly flat, alternately just
visibly convex. Length ( 9 ) 8.3 mm. ; width 3.75-3.8 mm. Nevada
(Reno). Two examples taken by the writer subdepressa n. sp.

Antennae with two or three basal joints paler 6

6 — Body rather narrowly oblong-oval, convex, shining, the elytra ( 9 )
but slightly alutaceous; under surface and legs black, not at all met-

250 MEMOIRS ON THE COLEOPTERA

allic, the coxae rufescent; head with rather prominent eyes, the stri-
oles moderate and oblique; antennae piceous-black, with two rufes-
cent basal joints, extending to about basal fourth of the prothorax,
the latter two-thirds wider than long, the sides very finely reflexed,
subevenly and moderately arcuate, becoming parallel basally; apex
sinuate, much narrower than the base and with rather blunt, not
very prominent angles; basal angles right, not rounded; surface
feebly impressed and with longitudinal rugulae along the apex, the
stria very fine, much abbreviated ; inner subbasal striole fine and
short, the outer impression small, feeble, sublinear and posteriorly
oblique; elytra one-half longer than wide and evidently wider than
the prothorax, arcuately ogival in almost posterior half; striae very
fine, impunctate, the scutellar moderate; lateral series rather widely
interrupted; sinus wide and shallow; intervals nearly flat, with but
faint traces of irregularity. Length (9) 7-8 mm.; width 3.3 mm.
Mexico (Salazar, Mex.), — Wickham *consors n. sp.

Body more broadly oblong-oval, the elytra more rapidly and obtusely
ogival behind 7

7 — Form oblong-oval, convex, shining, with very faint bronzy lustre;
elytra ( 9 ) but very slightly alutaceous; under surface polished, with
slight greenish lustre; legs, coxae and trochanters deep black; head
smooth and convex, with rather prominent eyes, the strides more
minute than usual, extremely short, fine and barely evident; anten-
nae black, slender, extending to about basal fourth of the prothorax,
the two basal joints obscurely rufous; prothorax but little more
than one-half wider than long; apex deeply sinuate, much narrower
than the base, with prominent though narrowly blunt angles, the
basal right and not rounded; sides moderately, subevenly arcuate,
rather finely but strongly reflexed and becoming subparallel basally,
the surface smooth, not notably depressed latero-basally, the inner
striole very small, fine, short and faint, the outer impression lying
anteriorly in a very indefinite depression, small and subobsolete;
elytra one-half longer than wide, not distinctly wider tha^i the pro-
thorax, ogivally rounded in apical third, the parallel sides feebly
arcuate; striae only moderately fine, somewhat groove-like, impunc-
tate, the scutellar long; lateral series more widely spaced medially
but not at all interrupted; intervals flat, feebly convex apically, the
sinus shallow. Length (9) 8.2-8.35 mm.; width 3.75 mm. New
Mexico (Fort Wingate), — Shufeldt. Two examples.

modulata n. sp.

Form oblong-oval, convex, almost equally shining in the two sexes, the
elytra micro-reticulate in both but shining, with scarcely bronzy
lustre, the under surface black, not at all metallic; legs black, the
tibiae and tarsi sometimes rufescent; head but little more than half
as wide as the prothorax, the eyes only feebly convex, the strioles
well developed and coarse; antennae black, with two or three pale
basal joints; prothorax fully three-fourths wider than long, the apex
deeply sinuate, with prominent and rather sharply defined angles,
much narrower than the base, the sides evenly and feebly arcuate
from base to apex and finely reflexed, not becoming quite parallel

AMARIN^E 251

basally; inner subbasal striole very feeble, the outer deep, oblique
and foveiform; elytra rather short, two-fifths longer than wide,
barely wider than the prothorax; striae fine, impunctate, the scutel-
lar long, the foveae of the eighth narrowly though completely inter-
rupted medially; intervals nearly flat throughout, sometimes with
alternate slight irregularity. Length (cf 9 ) 8.0-8.6 mm.; width
3.4-3.65 mm. California (Siskiyou Co.). Four examples.

shastanica n. sp.

Form more elongate-oval, convex, shining, black, with barely a trace of
metallic lustre, the elytra (9) strongly micro-reticulate though
rather shining; under surface black, without trace of metallic lustre,
the legs piceous in the type; head barely more than half as wide as
the prothorax, with nearly flat eyes and strong foveiform strioles;
antennae slender, black, the first two joints and basal part of the third
rufescent; prothorax much longer than in the preceding, barely
one-half wider than long, the deeply sinuate apex much narrower
than the base, the angles obtusely rounded at tip; sides feebly, sub-
evenly rounded, becoming parallel at base, the angles right; surface
with very indistinct impressions, the outer subbasal fovea rounded,
moderately deep, the puncture in the hind angles coarse; elytra
fully one-half longer than wide, gradually ogival in rather more than
apical third, not distinctly wider than the prothorax, the sinus
rather deep; striae somewhat fine but groove-like, not punctate, the
scutellar long, free at both ends; lateral ocellate series widely separ-
ated but not definitely interrupted medially; intervals feebly convex,
somewhat irregular; striae coarser, with convex intervals on the de-
clivity. Length (9 ) 9-Q mm.; width 3.8 mm. Oregon (Clackamas
Co.) , — Kermack semota n. sp.

8 — Eyes larger but only moderately prominent, as in most of the pre-
ceding species 9

Eyes smaller but strongly convex and prominent, the head evidently still
smaller IO

9 — Body elongate-oval, rather convex, shining and more or less bronzed
above, the under surface and legs deep and uniform black through-
out, without metallic lustre of any kind; elytra scarcely less shining
in the female, though micro-reticulate in both sexes; head very nearly
half as wide as the prothorax, the eyes only feebly convex, the stri-
oles moderate, fine; antennae extending to the thoracic base, black,
the first joint rufous, the second piceous, the third carinate basally;
prothorax one-half wider than long to slightly more; apex deeply
sinuate, much narrower than the base, with prominent though
bluntly rounded angles; sides finely reflexed, evenly and moderately
converging and feebly arcuate from base to apex; inner subbasal
impression short, feebly impressed and sublinear, the outer small,
almost obsolete; transverse impressions feeble though evident; ely-
tra (cT) more or ( 9 ) less than one-half longer than wide, but slightly
wider than the prothorax, obtusely rounded in barely apical third,
the sinus wide and shallow; striae fine, the scutellar long; lateral
series rather narrowly interrupted; intervals very feebly convex.

252 MEMOIRS ON THE COLEOPTERA

somewhat irregular. Length (cf 9 ) 8.0-8.5 mm.; width 3.7-4.0
mm. Nebraska solita n. sp.

Body more narrowly suboval, much smaller, moderately convex and shin-
ing, dull brassy-bronze in lustre, the under surface and legs black;
elytra more strongly reticulate in the female; head very nearly half
as wide as the prothorax, the eyes slightly more convex than in
solita, the strioles fine; antennae black, the two basal joints paler;
prothorax but slightly more than one-half wider than long, nearly
as in the preceding throughout but less narrowed from base to apex;
elytra one-half longer than wide in both sexes, not or just visibly
wider than the prothorax, obtusely rounding in apical third, the
sinus very shallow; striae very fine, impunctate as usual in this sec-
tion, the scutellar moderate; lateral series widely separated, only
narrowly interrupted medially; intervals feebly convex and very
distinctly irregular or faintly nodulate. Length (cf 9 ) 6.6-7.0 mm.;
width 2.8-3.2 mm. Colorado. Levette collection. Three speci-
mens reducta n. sp.

Body more evenly and less narrowly elongate-oval, also more convex,
smoother and more shining than in the two preceding, black, with
scarcely perceptible metallic lustre; under surface and legs black;
head very nearly half as wide as the prothorax, the eyes moderately
convex, the strioles very small, short and fine; antennae slender,
black, the two basal joints paler, the medial joints on the compressed
side (cf ) about twice as long as wide; prothorax slightly more than
one-half wider than long, the deeply sinuate apex with prominent
and only moderately blunt angles, much narrower than the base;
sides evenly and feebly arcuate, finely reflexed from base to apex,
parallel and feebly arcuate basally; surface smooth, with barely a
trace of the feeble subbasal impressions, more flattened postero-
externally than usual; elytra one-half (cf) to less (9) longer than
wide, not evidently wider than the prothorax in either sex, polished
(cf ), alutaceous (9 ); striae very fine and simple, the scutellar long,
very fine; lateral series rather widely and sharply interrupted medi-
ally; intervals nearly flat throughout the length, having merely the
barest trace of alternate irregularity. Length (cf 9 ) 6.8-8.0 mm.;
width 3.3-3.6 mm. Kansas and Colorado. Three examples.

ellipsis n. sp.

10 — Prothorax very short, nearly twice as wide as long, the apex fully
three-fourths as wide as the base. Oblong-oval, moderately con-
vex, very shining and bright aeneous above; under surface and legs
piceous to black, not metallic; head not quite half as wide as the
prothorax, the eyes not large but prominent, the strioles moderate;
antennae notably slender, black, with rufescent basal joint; pro-
thorax four-fifths wider than long, the apex feebly sinuate and with
broadly rounded angles; sides feebly, evenly arcuate and greatly
converging from base to apex; surface smooth, with nearly obsolete
transverse impressions, the subbasal impressions fine and feeble,
the inner striolate, the outer oblique; puncture in the angle coarse;
elytra two-fifths longer than wide, slightly wider than the prothorax,
obtusely rounded behind, with shallow sinus; sides broadly arcuate;

AMARINJE 253

striae very fine, the scutellar rather short, fine; outer striae sometimes
feebly and irregularly subpunctulate or comminuted; lateral series
narrowly interrupted; intervals almost flat, with scarcely visible
traces of irregularity. Length (cf 9 ) 6.4-6.7 mm.; width 2.8-3.0
mm. California (Truckee). Three examples nexa n. sp.

Prothorax much less than twice as wide as long, more narrowed ante-
riorly, the apex barely two-thirds as wide as the base 1 1

II — Form evenly elongate-elliptical, rather convex, moderately shining,
black above and beneath, without metallic lustre; legs black; head
not half as wide as the prothorax, with well developed and prom-
inent eyes and small linear oblique strides; antennae slender, black,
the basal joint obscure rufous; prothorax one-half wider than long,
the apex feebly sinuate, with obtuse angles; sides strongly converg-
ing, evenly and moderately arcuate from base to apex, very finely
reflexed; surface smooth, with obsolete transverse impressions and
very fine incomplete median stria, the inner subbasal striole short
but distinct, near basal fourth, the outer very short, feeble, poste-
riorly oblique; elytra nearly one-half longer than wide, evenly ogivally
rounded in about apical third, very slightly wider than the prothorax,
the parallel sides broadly, evenly arcuate; striae extremely fine, im-
punctate, the seventh obsolete, the scutellar moderate; lateral series
rather widely and sharply interrupted; intervals flat or very nearly,
not at all irregular. Length (cf) 7.5 mm.; width 3.3 mm. Mexico
(Colonia Garcia, Sierra Madre Mts., Chihuahua), — Townsend.

*mora n. sp.

Form narrowly oblong-suboval, moderately convex, shining, black, the
upper surface with faint bronzy lustre; legs not absolutely black;
elytra of the female but little less polished than in the male; head
small, not quite half as wide as the prothorax, the eyes strongly
convex and prominent, the strides very fine, oblique; antennas slen-
der, black, the basal joint very obscure rufous; prothorax slightly
more than one-half wrider than long; apex very moderately sinuate,
with obtusely blunt angles; sides converging, broadly and subevenly
arcuate and very finely though sharply reflexed from base to apex;
transverse impressions very feeble, the fine median stria incomplete;
inner subbasal striole short and small though distinct, the outer
oblique, very feebly impressed or subobsolete; angular puncture
more distant from side than base; basal angles sharply right; elytra
scarcely one-half longer than wide, barely perceptibly wider than
the prothorax, evenly ogivally rounded in about apical third, the
parallel sides sharply reflexed and feebly arcuate; striae extremely
fine, impunctate, the seventh subobsolete, the scutellar rather long,
oblique and faint; lateral series abruptly and somewhat widely inter-
rupted; sinus rather broad and shallow. Length (cf 9 ) 5.85-6.0

mm.; width 2.5 mm. Lake Superior erratica Stm.

•

I am by no means sure that the Lake Superior form here identi-
fied as the European erratica, is really that species, but it is the one
commonly so called. It is very peculiar in the sexual characters

254 MEMOIRS ON THE COLEOPTERA

4

at the abdominal apex, there being but one puncture at each side
in both sexes, but the last segment is longer in the female than in
the male. The identification of our patruelis Dej., as inter stitialis,
is one of the most remarkable errors that can be recalled just now,
for, referring to Dej can's description of interstitialis, from Kamt-
schatka, it can be seen at once that it is a very much smaller species
than patruelis. The alternately more elevated and irregular strial
intervals, is a character traceable in most of the species of this
group to a greater or less degree.

Group II

The species of the californica type, constituting this group, are
more convex than in the preceding series and have the apex of the
prothorax less deeply sinuate; the legs, also, are never black; there
is sometimes a feeble trace, however, of the peculiar alternation of
convexity in the strial intervals characterizing the erratica group.
The prosternal characters of the male are amply distinctive. The
species known to me are the following:

Prothorax widest at or very near the base 2

Prothorax not widest at base 3

2 — Form stout, oblong-oval, notably convex, bronzed above, the sides of
the prothorax very slightly diaphanous; under surface black, non-
metallic, the legs piceous; elytra distinctly micro-reticulate in both
sexes but more shining in the male; head well developed, distinctly
more than half as wide as the prothorax; eyes moderately promin-
ent, the strioles somewhat deep and coarse; antennae rather short,
obscure rufous, the two basal joints paler rufous; prothorax a little
less than one-half wider than long; apex much narrower than the
base, feebly sinuate, the angles scarcely at all prominent, blunt;
sides converging and evenly, feebly arcuate from base to apex,
finely but abruptly, evenly reflexed; surface not at all depressed
postero-laterally, punctureless, with subobsolete transverse impres-
sions, the stria very fine, abbreviated; inner of the subbasal foveae
short but linear, deep and distinct, the outer similarly deep, linear
and posteriorly oblique outwardly as usual; elytra one-half (cf ) to
two-fifths ( 9 ) longer than wide, at the middle very distinctly wider
than the prothorax, obtuse behind; striae very fine, punctureless,
the scutellar long; lateral series moderately though completely inter-
rupted medially; intervals broad, perfectly flat (9), nearly so (cf).
Length (cf 9 ) 7.3-8.5 mm.; width 3.3-4.2 mm. California (Sonoma
to San Diego), also Lower California. Abundant., .californica Dej.
Form stout, oblong-suboval and convex, almost similar to californica in
coloration, lustre and general structure, but with the elytra relatively
somewhat shorter and with still finer s1 nation; head well developed,

AMARIN/E 255

the strides rather finer; antennae rufo-ferruginous; prothorax al-
most perfectly similar, except that the small foveolae near the base,
though similar in position and extent, are feebler; elytra almost
similar in every way, but with the striation extremely fine and the
intervals flat even in the male. Length (cf 9 ) 7-9-8.Q mm.; width
3.65-3.9 mm. Mexico (Federal District) to Arizona (Tugson).
Very abundant mexicana Dej.

Form rather narrower and more depressed than in either of the preceding,
smaller in size and with relatively somewhat smaller head and much
shorter prothorax, black, with very faint bronze lustre above, the
legs obscure rufous, the femora blackish and submetallic; head but
little over half as wide as the prothorax, with prominent eyes and
short fine and very oblique strioles; antennae short, piceous-black, the
two basal joints obscure rufous; prothorax fully three-fourths wider
than long; apex evenly but not deeply sinuate, the angles blunt;
sides feebly converging, finely reflexed and feebly, subevenly arcu-
ate from very near the basal angles to the apex; surface puncture-
less and with subobsolete transverse impressions, distinctly depressed
postero-laterally, the stria short and fine, the inner of the subbasal
foveoles short, deep, linear, the outer faintly impressed, oval and
subobsolete; elytra rather less than one-half longer than wide, at
the middle barely perceptibly wider than the prothorax, obtusely
ogival behind; stria? fine, punctureless, the scutellar moderate, .free;
lateral series moderately though abruptly interrupted; intervals
nearly flat, alutaceous. Length (9) 7-8 mm.; width 3.3 mm.
Mexico (near the city), — O. \V. B *gnara n. sp.

3 — Body still smaller, rather convex, subparallel, shining, with faint
greenish-bronze lustre, the under surface and legs dark rufous; ely-
tra (9) alutaceous, strongly micro-reticulate; head slightly more
than half as wide as the prothorax, with prominent eyes and very
small punctiform strioles; antennae short, pale piceo-ferruginous,
the three basal joints paler, rufous; prothorax two-thirds wider than
long; apex very moderately sinuate, much narrower than the base
and with broadly obtuse angles; sides subevenly and moderately
arcuate, sharply though narrowly reflexed, becoming subparallel be-
hind about the middle; surface punctureless, not distinctly depressed
postero-laterally, the transverse impressions obsolete, the stria very
fine, abbreviated; inner of the subbasal foveoles short, fine and lin-
ear, the outer oblique, short and feebly impressed; elytra not quite
one-half longer than wide, barely perceptibly wider than the pro-
thorax, obtusely ogival behind, the sinus feeble; striae fine but rather
groove-like, impunctate, the scutellar short; lateral series more
widely separated medially but not interrupted; intervals wide, al-
most perfectly flat throughout. Length (9) 7-5 mm.; width 3.25
mm. Mexico (Salazar, Mex.), — Wickham *habilis n. sp.

Body more abbreviated, rather convex, bronzed above, the under surface
and legs dark rufous; elytra alutaceous in the female; head larger
than in the preceding, fully three-fifths as wide as the prothorax;
eyes prominent; strioles short, fine and oblique; antennae not extend-
ing to the thoracic base, piceous, the two basal joints rufous; pro-

256 MEMOIRS ON THE COLEOPTERA

thorax widest near the middle, where it is evidently wider than at
base, about one-half wider than long; apex distinctly narrower than
the base, very feebly sinuate, the angles not in the least prominent
and very broadly rounded; sides evenly and moderately arcuate,
strongly but not coarsely reflexed; basal angles more than right and
slightly blunt; surface punctureless, the subbasal foveoles somewhat
as in the preceding; elytra shorter, scarcely more than a third longer
than wide, ogivally rounded behind the middle, barely at all wider
than the prothorax, the marginal gutter rather coarse; striae not
very fine, groove-like, impunctate, the scutellar short, fine, oblique;
lateral series not evidently interrupted; intervals flat. Length (9)
6.6 mm.; width 3.2 mm. Mexico (Salazar, Mex.), — Wickham.

*parata n. sp.

In the first three of the above species the strial intervals frequently
display decided traces of the subnodular elevation characterizing
most of the erratica group, but this feature is not distinctly trace-
able in the last two; the single types of the latter were taken at
the same place by Prof. Wickham and belong to the same subsec-
tion of the californica group, but they are specifically different, as
may be seen from the descriptions; parata has a form of prothorax
recalling that of certain small species of Bradytus, and perhaps
there may be some real affinity.

Group III

The general habitus of rectangula Lee., sets it apart from all other
species of Celia, by reason of its elongate parallel outline and less
transverse prothorax, so that the propriety of a distinct group for it
seems apparent. It is here that some striking characteristics of all
the preceding species become obsolete and replaced by others which
remain evident through the remaining groups of the genus; this ob-
servation refers particularly to the punctureless pronotum and feeble
subbasal foveoles of the former and the latero-basal punctures and
stronger foveae of the latter, also to the irregularly elevated strial
intervals of the one and the more even intervals of the other. We
might therefore have proposed a division of the genus into two
equivalent sections, the first composed of groups I and II and the
second of groups III to VI. It is only in the second of these two pri-
mary subdivisions that punctured elytral striae become very evident,
though this character is scarcely ever noticeable even here, ex-
cept in Group VI, composed of a host of very small species. The
type species of this group is the following:

AMARINJE 257

Body elongate, parallel and moderately convex, polished and deep black
above, the elytra feebly alutaceous in the female, black beneath,
the legs obscure piceo-rufous, the femora rather paler rufous; head
rather small, about half as wide as the prothorax, the eyes prom-
inent, the strioles well developed, deep and somewhat oblique; an-
tennae ferruginous, scarcely extending to the thoracic base (cf ), or
distinctly shorter (9); prothorax only two-fifths wider than long;
apex much narrower than the base, distinctly sinuate, the angles
broadly blunt; sides broadly, subevenly arcuate and rather finely
reflexed, becoming subparallel or even feebly convergent and nearly
straight in about basal half, the angles right, minutely everted and
prominent in the male; transverse impressions obsolete; median
stria fine, almost entire; basal foveae shallow, impressed and sub-
linear, with moderate scattered punctures, the inner at about lat-
eral fourth, the outer shorter and oblique; elytra one-half longer
than wide, barely at all wider than the prothorax, obtusely ogival
behind, the sides feebly arcuate; striae not very fine and rather deep,
distinctly punctate (cf), impunctate (9), the scutellar long, not
free; lateral series variably interrupted; intervals very feebly con-
vex. Length (cf 9 ) 9.0-9.5 mm.; width 3.5-3.8 mm. California
(Hoopa Valley, Humboldt Co.) and Oregon. Three examples.

rectangula Lee.

The female comes from the first named locality, the two males
from the second, so that I am unable to confirm the sexual nature
of the strial punctures, or the lateral prominence of the basal tho-
racic angles. The head is relatively larger in the two males than in
the female, but without further evidence it would scarcely be pru-
dent to maintain that two independent species are involved.

Group IV

This is a large section of the genus, including remotestriata, ter-
restris, chalcea and many others. The general habitus is so constant
throughout that I have considered it better not to form two groups
because of the presence or absence of a postero-lateral flattening
of the pronotal surface as suggested by Horn, especially as this is
not a very sharply limited character and is often very difficult to de-
termine. I have, however, used it in the definition of the species,
which are numerous and taxonomically rather troublesome. They
are generally of more or less pallid coloration, rather broad outline
and moderate convexity and but few exhibit any decided trace of
strial punctuation. The elytra are usually alutaceous in the fe-
male. So far as known to me they may be described as follows:

T. L. Casey, Mem. Col. VIII, Oct. 1918.

258 MEMOIRS ON THE COLEOPTERA

Pronotum more or less depressed at the sides basally 2

Pronotum with the sides not even vestigially depressed basally, convex
throughout laterally 12

2 — Elytra subequal in width to the prothorax, the outline of the body
more parallel 3

Elytra inflated at the middle, much wider than the prothorax, and with
the base slightly though evidently wider than the thoracic base, as
a rule, somewhat as in gibba . . . 9

3 — Sides of the pronotum toward base conspicuously depressed 4

Sides basally only vestigially depressed, the modification generally only
discoverable by longitudinal and specially oblique reflection 5

4 — Body stout and oblong-suboval, rather convex, shining, testaceous in
color- — possibly immature, the under surface and legs pale rufous;
elytra alutaceous in the female, the head well developed, distinctly
more than half as wide as the prothorax, the eyes rather large, only
feebly convex, the strioles moderate, oblique; antennae pale, slen-
der, extending slightly behind the thoracic base; prothorax nearly
three-fourths wider than long, very slightly wider near the middle
than at base, the sides broadly arcuate, more so before the middle,
rather broadly explanate and reflexed; apex deeply sinuate, much
narrower than the base and with bluntly rounded though promin-
ent angles; transverse impressions very feeble, the stria fine, nearly
entire; surface with a few fine punctures laterally at base; foveae
moderately impressed, well developed, the inner sublinear, the outer
irregular; explanate margins finely punctulate; elytra scarcely a
third longer than wide, parallel, very slightly wider than the pro-
thorax and obtusely ogival at apex, the feebly arcuate sides sharply
and strongly reflexed; striae very fine and impunctate, the scutellar
rather long, not free; lateral series narrowly and not sharply inter-
rupted; intervals flat and broad; sinus very shallow. Length (9)
7.0-7.2 mm.; width 3.2 mm. New York (Sheepshead Bay and
Rockaway Beach, Long Island), — Schott. Two examples.

laxicollis n. sp.

Body smaller, stout, oblong-suboval, moderately convex, blackish-piceous
above and beneath, the legs rufous; upper surface shining, faintly
aenescent, the thoracic margins narrowly diaphanous; elytra strongly
alutaceous in the female; head distinctly more than half as wide as
the prothorax, the eyes large, moderately prominent; strioles rather
long, feebly oblique; antennae obscure rufous, the basal joint clearer,
rather long, extending well behind the thoracic base in both sexes;
prothorax one-half wider than long, widest at and toward the base,
the sides feebly arcuate, slightly more so apically, explanate, the
edge sharply reflexed; apex three-fourths as wide as the base, deeply
sinuate, with prominent blunt angles; surface throughout very nearly
as in the preceding, the punctulation of the explanate sides but very
slight or wanting; elytra a third to two-fifths longer than wide,
slightly wider than the prothorax, rapidly and obtusely rounded
behind, with the sinus very shallow; sides feebly arcuate and sharply
reflexed; striae fine, wholly impunctate, the scutellar long, not free;
lateral series narrowly but not abruptly interrupted; intervals wide

AMARIISLE 259

and flat in both sexes; first two ventrals sometimes with a very few
moderate punctures. Length (cf 9 ) 6.5-7.5 mm.; width 2.8-3.4
mm. Michigan (Marquette), — Sherman. Twenty-one examples.

brumalis n. sp.
5 — Larger species, always much over 6 mm. in length; lateral ocellate

series not medially interrupted 6

Small species, between 5 and 6 mm. in length 8

6 — Outer thoracic fovea not extending to the basal margin. Body elon-
gate, subparallel, moderately convex, black to dark fulvous, with
feeble senescent lustre above and shining, the elytra alutaceous (9 ),
polished (cf ), black beneath, the legs obscure rufous, the femora
piceous; head more than half as wide as the prothorax, with notably
prominent eyes, the strides rather deep but fine and subparallel;
antennae slender, obscure rufous, rather clearer at base, extending
about to the thoracic base ( 9 ) or much further (cf); prothorax
barely more than one-half wider than long, the sides broadly arcu-
ate and finely, sharply re flexed, subparallel and arcuate basally,
broadly arcuate and converging from rather behind the middle to
the slightly prominent and bluntly rounded apical angles, the apex
moderately sinuate and very much narrower than the base; fovese
rather large, broadly impressed and with numerous moderate punc-
tures, the outer oblique; sides and the remainder of the surface
wholly impunctate; elytra nearly one-half longer than wide, obtusely
ogival at apex, very slightly wider than the prothorax, the feebly
arcuate sides narrowly reflexed; striae very fine (9 ), impressed (cf),
the scutellar moderate; intervals wide, convex (cf), very flat (9);
abdomen at the sides basally with rather numerous small punctures.
Length (cf 9 ) 7.5 mm.; width 3.5 mm. Michigan (Marquette),—

Sherman. Two examples paganica n. sp.

Outer thoracic fovea extending to the basal margin 7

7 — Body moderately stout, piceous-black, sometimes with feeble senes-
cent lustre, polished above, the thoracic sides slightly diaphanous,
the elytra only moderately alutaceous in the female; under surface
nearly black to obscure rufous, the legs rufous, the anterior femora
sometimes blackish; head barely more than half as wide as the pro-
thorax, with rather feebly convex eyes and moderate convergent
strioles: antennae testaceous, slender, extending far behind the tho-
racic base; prothorax three-fifths wider than long, the sides broadly
arcuate, more strongly so and converging anteriorly, generally just
visibly converging and nearly straight from the middle to the base,
not broadly but strongly reflexed ; apex much narrower than the base,
very moderately sinuate, the angles prominent but narrowly blunt;
surface nearly as in the preceding, the foveal punctures numerous,
moderate in size; margins punctureless as a rule; elytra nearly one-
half longer than wide, very little wider than the prothorax, rather
gradually ogival in more than apical third; striae fine but distinct,
sometimes feebly punctulate toward the suture, the scutellar rather
long, not free; intervals nearly flat, sometimes feebly convex api-
cally; abdomen with but few punctures latero-basally; middle male
tibiae slightly bent. Length (cf 9 ) 6.7-7.8 mm.; width 2.8-3.5

260 MEMOIRS ON THE COLEOPTERA

mm. Colorado (Boulder Co. and Eldora) and New Mexico (Las
Vegas). Twenty-five specimens terrestris Lee.

Body somewhat as in terrestris but much smaller and relatively somewhat
narrower, nearly similar in coloration and lustre; elytra of the female
but little less shining than in the male; head relatively very much
larger, three-fifths as wide as the prothorax, the eyes very moder-
ately convex, the strioles convergent; antenna? much shorter, ex-
tending to about the thoracic base and ferruginous; prothorax less
transverse, one-half wider than long, nearly as in terrestris through-
out, but with the apex relatively less narrowed, being almost four-
fifths as wide as the base; punctures in the foveal region still smaller
and less numerous as a rule; elytra almost as in terrestris throughout,
but relatively somewhat shorter when compared with the prothorax,
two-fifths longer than wide, the striae deep, only moderately fine,
sometimes feebly punctate though often completely punctureless;
middle tibiae distinctly bent in the male. Length (cf 9 ) 6.5-7.0
mm.; width 2.65-3.1 mm. New Mexico (Jemez Springs) and Kan-
sas. Thirteen examples defecta n. sp.

Body almost as in terrestris in form and size, similarly colored, the legs
and epipleura pale rufous; elytra more strongly alutaceous in the
female, subopaque; head similar but relatively somewhat larger,
distinctly more than half as wide as the prothorax, the eyes very
moderately convex, the strioles distinct, slightly oblique; antennae
flavo-ferruginous, extending slightly behind the prothorax (cf),
or to the thoracic base ( 9 ) ; prothorax throughout nearly as in ter-
restris, the elytra also as in that species, but the striae are rather finer
and deep, groove-like, and are distinctly punctulate in the female,
though scarcely visibly so in the male and more distinctly toward
the suture as usual; middle tibiae of the male extremely feebly bent
in the middle. Length (cf 9 ) 6.5-7.6 mm.; width 2.8-3.2 mm.
Oregon (Columbia River Valley), — Shantz exposita n. sp.

Body smaller and narrower than in terrestris, similar in color and lustre,
the pronotum at the sides more broadly diaphanous and rufescent;
upper surface polished throughout in the male; head much more
than half as wide as the prothorax, the eyes rather large and strongly
convex, more prominent than in terrestris, the strioles moderate and
slightly converging; antennae uniformly rufo-ferruginous, extend-
ing well behind the prothorax, the latter throughout almost as in
terrestris in outline and sculpture, except that the apical angles are
more broadly obtuse at tip, the basal foveae much deeper and the
punctures of the foveal region coarser and more numerous; both
foveae envelop the basal margin, the surface separating them notably
elevated; elytra as in terrestris but a little shorter, narrower and with
the parallel sides rather more arcuate, the similarly rather fine but
groove-like striae very obsoletely punctulate in some individuals;
intervals flat or nearly so; abdomen with a few punctures at the sides
of the first segment; middle tibiae of the male evidently bent. Length
(c?) 6.8-7.2 mm.; width 2.55-3.0 mm. Rhode Island (Boston Neck).
Two specimens mimica n. sp.

8 — Form narrowly oblong, convex, shining, greenish-black above, the

AMARIN^E 261

under surface and legs dark rufous; elytra (9 ) micro-reticulate but
only faintly alutaceous; head relatively large, two-thirds as wide as
the prothorax, the eyes moderately prominent; strides very short,
oblique; antennae ferruginous, slender, extending well behind the
thoracic base; prothorax short, two-thirds wider than long, the sides
subparallel and feebly arcuate, more converging and arcuate api-
cally, the finely reflexed margin rufescent; apex nearly four-fifths as
wide as the base, sinuate, with slightly prominent though blunt
angles; postero-lateral flattening feeble and vestigial; transverse im-
pressions rather distinct; surface almost completely impunctate, the
foveae rounded, very moderate, subequal and impressed, each with
two or three very small punctures; elytra two-fifths longer than wide,
scarcely at all wider than the prothorax, obtusely ogival behind, the
feebly arcuate sides rather narrowly reflexed; striae very fine, min-
utely, indistinctly punctulate, the scutellar on both elytra in the
type continuing unbroken to the apex, the detached basal part of
the first stria widely isolated; foveae of the eighth not interrupted;
intervals flat. Length (9 ) 5.4 mm.; width 2.3 mm. New Mexico
(Jemez Springs), — -Woodgate.. fontinalis n. sp.

Form narrowly elongate-suboval, convex, shining, piceous, the legs pale
rufous; elytra but faintly alutaceous in the female; head not quite
three-fifths as wide as the prothorax; eyes moderately prominent,
the strioles moderate, oblique; antennae rather long, slender, ferru-
ginous, extending well behind the thoracic base; prothorax one-half
wider than long, the sides feebly arcuate and finely, sharply reflexed,
subparallel in basal, more converging and rounded in apical, half;
apex three-fourths as wide as the base, feebly sinuate, the angles
narrowly obtuse; postero-lateral flattening barely traceable, ves-
tigial; transverse impressions very faint; foveal region with a few
small sparse punctures; foveae unequal, moderately impressed, the
inner linear, the outer much smaller and oblique; elytra fully one-
half longer than wide, but slightly wider than the prothorax, grad-
ually ogival behind, the sides feebly arcuate, narrowly reflexed;
striae impunctate, very fine, slightly impressed, the scutellar con-
tinuous with the sutural in the type, the basal part of the first
slightly detached; intervals very feebly convex; hind tarsi much
shorter than in the larger and stouter terrestris Lee. Length ( 9 )
5.8 mm.; width 2.4 mm. Colorado (Eldora), — L. W. Casey.

eldorensis n. sp.

9 — Body smaller, with numerous rather strong punctures over the foveal
region of the pronotum. Rather narrowly suboval, convex, shin-
ing, blackish, the elytra less black and feebly metallic; under sur-
face of the hind body blackish, the remainder and the legs pale
rufous; head relatively large, two-thirds as wide as the prothorax;
eyes large but only moderately convex, the strioles rather long, fine
and oblique; antennae ferruginous, rather long, extending well be-
hind the thoracic base; prothorax but slightly more than one-half
wider than long, the sides moderately arcuate and finely, strongly
reflexed, subparallel in basal, more converging and rounded in api-
cal, half; apex three-fourths as wide as the base, feebly sinuate, the

262 MEMOIRS ON THE COLEOPTERA

angles narrowly blunt and scarcely prominent; postero-lateral flat-
tening just traceable, vestigial; transverse impressions subobsolete;
stria very fine, nearly entire; inner fovea large, scarcely at all im-
pressed and very indefinite, the outer larger than usual, rounded,
impressed and attaining the base; elytra a third longer than wide,
rapidly obliquely ogival in about apical third, at the middle nearly
a fifth wider than the prothorax; humeral denticles extending slightly
beyond the thoracic angles; sides arcuate, narrowly but strongly
reflexed ; striae moderately fine, impunctate, the scutellar joining
the first; lateral series narrowly interrupted; intervals wide, flat;
hind tarsi long, both the middle and hind tibiae somewhat bent in
the male; abdominal apex in that sex with a close pair of punctures
at each side. Length (cf) 5.8 mm.; width 2.7 mm. Colorado.
Levette collection docilis n. sp.

Body larger, with fewer or feeble punctures in the foveal region of the
pronotum 10

10 — Elytra fully three times as long as the prothorax; sides of the latter
parallel and nearly straight in basal half, rounding apically. Body
elongate, convex, dark red-brown and scarcely shining, the elytra
opaculate in the female; under surface shining, obscure rufous, the
legs pale rufous; head fully three-fifths as wide as the prothorax;
eyes moderately convex; strides subangularly foveiform; antennae
slender, ferruginous, extending barely behind the thoracic base;
prothorax fully one-half wider than long, the sides finely but sharply
reflexed; apex fully four-fifths as wide as the base, moderately sinu-
ate, with blunt angles; transverse impressions feeble, the stria finely
impressed, not quite entire; surface gradually feebly deplanate at
the sides, more broadly flattened behind; basal punctures rather
numerous, extending almost entirely across; foveae moderate, the
inner long and linear, the outer small and rounded; elytra one-half
longer than wide, obtusely ogivally rounded behind, a fourth wider
than the prothorax, the sides broadly and evenly arcuate; humeri
narrowly exposed at base; striae rather fine, feebly impressed, scarcely
punctulate, the scutellar long, joining the first, the lateral series of
punctures widely spaced but not interrupted; intervals feebly con-
vex; hind tarsi long, very slender; palpi very long, slender; mentum
tooth narrowly and feebly bilobed at tip. Length (9) 7-5 mm.;
width 3.3 mm. A single specimen from the Levette collection,
probably taken in Colorado brunnescens n. sp.

Elytra distinctly less than three times as long as the prothorax, the latter
slightly wider at the middle than at base; the humeri narrowly but
always evidently exposed at base; body less elongate and evidently
more shining 1 1

n — Body stout, oblong-suboval, very shining (cf ), the elytra subopaque
(9), piceous above, slightly rufescent beneath, the epipleura and
legs pale rufous; head well developed, three-fifths as wide as the base
of the prothorax; eyes very moderately convex, the strides distinct,
oblique; antennae ferruginous, slender, long, in the male extending
far behind the thoracic base; prothorax distinctly less than one-half

AMARIN/E 263

wider than long, the sides evenly arcuate, sharply reflexed at the
edge; apex distinctly sinuate, three-fourths as wide as the base, the
angles broadly blunt (cf), or narrowly (9 ); transverse impressions
feeble, the stria impressed, abbreviated; surface declivously sub-
explanate posteriorly to the obtuse elevated area outside the outer
fovea; foveal region with some moderate punctures; foveae broadly,
feebly impressed, the outer attaining the base; elytra two-fifths (9 )
to nearly one-half (cf ) longer than wide, rapidly and very obtusely
ogival at tip, a fourth wider than the prothorax, the sides broadly
arcuate; striae rather fine but groove-like, almost impunctate, the
scutellar long, oblique, not free; lateral series very widely separated
medially. Male with a close pair of punctures at each side of the
abdominal apex, a widely separated pair in the female. Length
(a71 9 ) 7.3-7.8 mm.; width 3.2-3.3 mm. California (Yreka and in
Siskiyou Co.), — Levette and Koebele definita h. sp.

Body not quite so stout, dark castaneous, shining, the under surface
rufous, the legs flavo-rufous; elytra of the female but slightly alu-
taceous; head evidently more than half as wide as the prothorax;
eyes very moderately convex, the strioles distinct, linear, oblique;
antennae rather long, slender, ferruginous, extending well behind
the thoracic base; prothorax one-half wider than long, the sides
evenly rounded and sharply reflexed; apex more than three-fourths as
wide as the base, distinctly sinuate, the angles moderately blunt
and prominent; transverse impressions subobsolete, the stria fine,
subentire; surface laterally less distinctly declivously explanate than
in the preceding, the oblique elevation along the outer fovea rather
less pronounced; punctures of the foveal region few and fine; foveae
moderate, rather deeply impressed, the inner sublinear, the outer
broader, attaining the base; elytra two-fifths longer than wide to
but little more, about a fifth wider than the prothorax, the general
form as in the preceding, the surface much more shining in the fe-
male; striae never more than very obsoletely punctulate, the scu-
tellar as in definita; intervals flat (9), or distinctly convex, espe-
cially toward the suture (cf); lateral series entire. Male with two
close pairs of apical abdominal punctures as in the preceding.
Length (d71 9 ) 6.8-7.9 mm.; width 3.2-3.5 mm. Utah. Four ex-
amples obligata n. sp.

12 — Sides of the pronotum somewhat recalling the preceding section,
gradually and feebly declivous but without a distinctly marked lim-
itation of the depression. Body very broad, oblong-suboval, rather
strongly convex, highly polished throughout in both sexes and deep
black, with barely observable senescence, the sides of the pronotum
posteriorly slightly diaphanous and rufescent; under surface piceous-
black, the epipleura feebly rufescent, the legs rufous; head not dis-
tinctly more than half as wide as the prothorax; eyes prominent,
the strioles rather long, fine and oblique; antennae piceo-ferruginous,
the first two joints and most of the third paler, testaceous, much
shorter than the thoracic width in the female; prothorax shorter
and broader than in any other species and less narrowed at apex,
almost twice as wide as long, the sides feebly converging, evenly

264 MEMOIRS ON THE COLEOPTERA

and very feebly arcuate from base to apex; basal angles right but
obtusely blunt; apex broadly sinuato-truncate, with broadly rounded,
unadvanced angles, fully four- fifths as wide as the base; posterior
transverse impression obvious, the other obsolete; foveal region
with small scattered punctures; inner fovea short, linear, not near
the base, the outer deeper, oblique; elytra a third longer than wide,
very slightly wider than the prothorax, obtusely ogival behind, the
parallel sides feebly arcuate; base not quite as wide as the thoracic
base; striae fine, impunctate, evidently impressed, the scutellar mod-
erate, oblique, not free; lateral series narrowly or indecisively inter-
rupted; intervals broadly convex near the suture. Length (9) 7.4
mm.; width 3.5 mm. North Carolina (Southern Pines), — Manee.

pinorum n. sp.

Sides -of the pronotum rather abruptly and steeply convexo-declivous
throughout the length, without trace of depression or gradual de-
clivity 13

13 — Prothorax widest at or very close to the base 14

Prothorax widest at about the middle, subevenly arcuate almost as in

some species of Bradytus 17

14 — Body deep black or very nearly black above 15

Body not black 16

15 — Form oblong-suboval, very convex, shining, the elytra micro-retic-
ulate; margins of the pronotum feebly diaphanous; under surface
shining, black; legs obscure rufous, the femora blackish; head but
slightly more than half as wide as the prothorax, with prominent
eyes, the strioles long, deep and oblique; antennae dark ferruginous,
long, extending well behind the thoracic base; prothorax nearly three-
fifths wider than long; apex only two-thirds as wide as the base,
feebly sinuate, the angles broadly blunt; sides broadly arcuate, more
so anteriorly, subparallel in about basal half, curving inward for a
short distance at base to the obtuse angles, finely reflexed; trans-
verse impressions subobsolete; foveal region with some moderate
sparse punctures; stria fine, biabbreviated; inner fovea long, sharply
linear, the outer small, irregularly punctiform, distant from the base;
elytra two-fifths longer than wide, obtusely ogival behind, at the
middle with the sides nearly straight, curving inward toward base,
distinctly wider than the prothorax, the two bases however equal;
striae moderately fine, groove-like, slightly impressed, impunctate,
the scutellar long, oblique, not free; lateral series distinctly interrup-
ted medially; intervals broadly but evidently convex. Male with
the middle tibiae coarsely crenate within but hardly at all bent, the
abdominal apex with two punctures at each side. Length (o") 7.3

mm.; width 3.3 mm. Nevada (Reno) nevadica n. sp.

Form somewhat similar but more abbreviated, black to piceous-black,
very convex, shining, the elytra scarcely at all less so in the female;
abdomen dark rufous, the legs paler rufous; head rather large, nearly
three-fifths as wide as the prothorax and with very prominent but
moderate eyes, the oblique strioles somewhat impressed internally;
antennae (9) ferruginous throughout, short, barely as long as the
thoracic width; prothorax two-thirds wider than long, the sides arcu-

AMARIN.E 265

ately converging anteriorly, parallel in about basal half, the basal
angles slightly obtuse or blunt; apex two-thirds as wide as the base,
very moderately sinuate, with somewhat blunt angles; impressions
very near base and apex and barely visible; foveae rather large and
deep, irregularly rounded, with rather coarse punctures; elytra a
fourth longer than wide, not two and one-half times or long as the
prothorax and very slightly wider, gradually ogivally rounded be-
hind the middle, with broadly arcuate sides; striae very fine, impunc-
tate, the scutellar moderate, oblique, not free; foveae of the eighth
distinctly and sharply interrupted medially; intervals wide, per-
fectly flat. Length (9) 6.7 mm.; width 3.2 mm. New York
(Staten Island) sodalis n. sp.

Form oblong-suboval, slightly broader than sodalis and somewhat larger,
scarcely so convex, polished and brownish-black, with feeble bronzy
lustre, the elytra of the female not less shining; under surface shining,
nearly black to dark rufous; legs rufous; head much wider than long,
with very prominent eyes, slightly more than half as wide as the
prothorax, the strioles fine, only slightly oblique; antennae fusco-
testaceous, paler basally, notably short, barely longer than the tho-
racic width (9 ), but evidently longer in the male; prothorax short,
fully three-fourths wider than long, the sides but slightly converg-
ing, distinctly and subevenly arcuate from the nearly right basal
angles to the apex, which is almost four-fifths as wide as the base,
feebly sinuate, with broadly rounded angles; base becoming some-
what sinuate at each side; transverse impressions subobsolete; foveal
region slightly punctate, the inner fovea rather broadly impressed to
sublinear, the outer smaller, deeper and more oblique; elytra a third
to nearly two-fifths longer than wide, ogivally rounded in less than
apical half, barely wider than the prothorax, the two bases equal;
sides feebly arcuate; striae fine but distinctly impressed, impunctate,
much less fine than in sodalis, the scutellar short, oblique, free;
lateral series completely interrupted medially; intervals broadly
and feebly convex, virtually flat in the female; abdominal apex with
two punctures at each side in both sexes. Length (cf 9 ) 6.3-7.3
mm.; width 2.8-3.35 mm. North Carolina (Southern Pines),—
Manee. Ten examples chalcea Dej.

Form elongate-suboval, narrower than chalcea and deeper black, the
upper surface polished, without trace of metallic lustre; under sur-
face black, the abdominal tip often rufescent; legs obscure rufous;
elytra in the female not perceptibly less shining; head large, with
prominent eyes, much more than half as wide as the prothorax; an-
tennae short, scarcely as long as the thoracic width in the female,
colored nearly as in chalcea; prothorax nearly similar in outline and
structure throughout, with the foveal region even less punctured, the
inner fovea large, shallow, somewhat punctured, the outer smaller,
deeper, rounded, generally almost devoid of punctures; elytra not so
broad, similarly ogival posteriorly and even less evidently wider
than the prothorax; striation as in chalcea; abdominal apex with a
single puncture at each side in the male, two as usual in the female.

266 MEMOIRS ON THE COLEOPTERA

Length (cf 9 ) 6.3-6.5 mm.; width 2.8 mm. North Carolina (South-
ern Pines), — Manee. Three examples corvina n. sp.

1 6 — Body larger, the elytra much wider than the prothorax; anterior
tarsi very feebly dilated in the male. Form oblong-suboval, mod-
erately convex, highly polished throughout above in the male, dark
castaneous; under surface black, the abdomen and middle of the
prosternum rufescent; legs dark rufous; head large, two-thirds as
wide as the prothorax, with large and somewhat prominent eyes,
the strioles deep, linear and oblique; antennae ferruginous, long,
extending well behind the thoracic base; prothorax relatively small,
rather more than one-half wider than long, the sides feebly converg-
ing, feebly and subevenly arcuate and finely reflexed from near the
base to the apex, curving inward slightly at base, the angles more
than right but sharp; apex three-fourths as wide as the base, sinuato-
truncate, with broadly obtuse angles; basal impression distinct and
with rather coarse punctures throughout the width except medially,
the anterior obsolescent; stria very fine, abbreviated; inner fovea
large, broad, just visibly impressed, the outer smaller and deeper;
elytra two-fifths longer than wide, three times as long as the pro-
thorax and nearly a fourth wider, the base distinctly wider than the
thoracic base; sides broadly, feebly arcuate, obtusely rounded in
apical third; striae very finely, slightly punctulate, the scutellar long,
longitudinal and free; lateral series moderately interrupted; inter-
vals flat; central prosternal fovea of the male very small, oval, im-
pressed; abdomen with many small punctures latero-basally, the
tip with two pairs of punctures. Length (cf) 8.0 mm.; width 3.65
mm. Arizona amplipennis n. sp.

Body smaller, much narrower, the elytra not distinctly wider than the
prothorax. Form elongate-oval, convex, polished, pale castaneous;
under surface and legs rufo-flavate; head shorter than wide, three-
fifths as wide as the prothorax, with moderate but prominent eyes
and coarse deep converging strioles; antennae ferruginous, notably
short, not longer than the thoracic width (cf ), still shorter (9 ); pro-
thorax three-fifths wider than long, the sides broadly arcuate and
feebly converging from the base, slightly more arcuate very gradu-
ally toward apex, finely reflexed ; apex two-thirds as wide as the base
or more, feebly sinuate, the angles broadly blunt; impressions very
faint; foveal region with a few widely scattered punctures; inner
fovea broadly impressed and partially sublinear, the outer deeper,
rounded, not quite basal; elytra two-fifths to one-half longer than
wide, gradually rounded, in apical two-fifths, with the sides feebly
arcuate, the thoracic and elytral bases equal; striae moderately fine,
subimpressed suturally, impunctate, the scutellar short, oblique, free;
lateral series distinctly interrupted; intervals wide, flat or nearly
so; central fovea of the prosternum (cf ) very small, impressed,
narrowly oval; abdominal apex with two punctures at each side in
both sexes. Length (cf 9 ) 6.0-6.8 mm.; width 2.5-2.9 mm. New
York (Jamaica, Long Island), — Fred. M. Schott schotti n. sp.

Body nearly as in the preceding but shorter, the elytra not distinctly
wider than the prothorax. Darker castaneous, very feebly metallic,

AMARIN^E 267

the elytra rather paler than the anterior parts, highly polished above;
under surface piceous-black, the legs dark rufous; head nearly as
long as wide, distinctly more than half as wide as the prothorax; eyes
very convex and prominent, the strioles short, oblique; antennae pale
ferruginous, slender, moderately long and extending behind the tho-
racic base; prothorax three-fifths wider than long, the sides very
feebly reflexed, just visibly converging and nearly straight from the
rather rounded basal angles to beyond the middle, then gradually
more rounded and moderately converging to the apex, which is
nearly three-fourths as wide as the base, very feebly sinuate and
with broadly blunt angles; surface very smooth, the impressions
barely traceable, the stria fine, much abbreviated; base with some
scattered punctures throughout except medially; inner fovea short,
deep, linear, the outer moderately deep, oblique; elytra two-fifths
longer than wide, obtusely rounded in about apical third, the sides
feebly arcuate; surface micro-reticulate; humeri projecting very
slightly outside the thoracic base; striae fine, impunctate, slightly im-
pressed, the scutellar short, oblique, free at tip; lateral series nar-
rowly interrupted; intervals very feebly convex; central spot of the
male prosternum larger, oval, simply flattened and very finely punc-
tulate; abdominal apex with a single puncture at each side in the
male. Length (cf) 6.4 mm.; width 2.65 mm. 'New York (Wyan-
danch, Long Island), — Schott sphaerops n. sp.

17 — Line of ocellate punctures of the eighth elytral stria not at all inter-
rupted. Body small in size, deep black, shining, the elytra moder-
ately alutaceous in the female; under surface black, the legs piceous
or partially blackish; head nearly three-fifths as wide as the pro-
thorax, with prominent though moderate eyes and rather long deep
oblique foveoles; antennae piceous, gradually testaceous basally, ex-
tending somewhat beyond the thoracic base; prothorax three-fifths
wider than long, convex, the sides subevenly rounded, rather more
converging apically than basally; apex fully three-fourths as wide
as the base, distinctly sinuate, with broadly blunt angles, the basal
nearly right, not blunt; impressions feeble, the anterior obsolescent;
foveal regions with very few small punctures, the stria fine, suben-
tire ; foveae well impressed, the inner narrowly linear, the outer shorter
and oblique; elytra a third longer than wide, barely visibly wider
than the prothorax, rather gradually rounding behind, the parallel
sides feebly arcuate, the thoracic and elytral bases equal; striae
rather fine, feebly but obviously impressed, impunctate, the scu-
tellar short, oblique; intervals not quite flat; punctures of each pair
at the abdominal apex of the female unusually close-set. Length
(9) 5.8 mm.; width 2.7 mm. A single example, unlabeled in the
Levette collection but probably from Colorado merula n. sp.

Line of punctures distinctly and more or less widely interrupted sub-
medially ; body larger 1 8

18 — Elytra inflated, widest at or slightly behind the middle, with arcuate
sides. Body short, stout, convex, deep black, shining, the elytra
distinctly micro-reticulate and slightly alutaceous in the male; under
surface black, the legs dark piceo-rufous; head rather large, more

268 MEMOIRS ON THE COLEOPTERA

than three-fifths as wide as the prothorax, with prominent eyes and
deep arcuate subparallel strioles; antennae obscure ferruginous,
brighter rufous basally, extending well behind the thoracic base;
prothorax only slightly more than one-half wider than long, the
sides evenly arcuate, finely but sharply and strongly reflexed; apex
fully four-fifths as wide as the base, rather distinctly sinuate, with
broadly rounded angles, the basal evidently obtuse but not rounded;
impressions obsolete, the stria fine, long; foveal region with fine
sparsely scattered punctures; inner fovea fine, long, deep and linear,
the outer small, rounded, impressed and not basal; elytra a third
longer than wide, submedially a fifth wider than the prothorax;
base slightly wider than the thoracic^base; striae very fine but sharply
defined, impunctate, the scutellar rather long, oblique, not free;
intervals wide and perfectly flat. Male prosternum with a small
rounded unimpressed area of fine punctures; abdominal apex in
that sex with a close-set pair of punctures at each side. Length (cf )

6.4 mm.; width 3.05 mm. Nevada (Reno) lugubris n. sp.

Elytra oblong, parallel, feebly arcuate at the sides 19

19 — Head large, shorter than wide, with very prominent but moderate
eyes; body more parallel, the elytral base never more than barely

perceptibly wider than the thoracic base 20

Head moderate, as long as wide or nearly; prothorax shorter 21

20 — Body elongate, parallel, moderately convex, shining throughout in
the male; under surface piceous-black, the legs obscure rufous; head
nearly two-thirds as wide as the thoracic base, the strioles somewhat
unevenly impressed; antennae long, obscure ferruginous, extending
fully to the thoracic base in the male; prothorax one-half wider than
long, widest at the middle, the sides rounded anteriorly, becoming
straight and oblique in basal half; apex broad, more than four-fifths
as wide as the base, broadly but evidently sinuate, with rather nar-
rowly blunt angles; transverse impressions obsolete; foveal region
with many rather close-set, moderately strong punctures; inner fovea
fine, linear, the outer more oval, deep, oblique and with its outer
boundary rather elevated; elytra one-half longer than wide, slightly
though rather evidently wider than the prothorax, rounded in api-
cal third, the sides feebly arcuate; striae fine but deep and sharp,
very slightly impressed in the male, the scutellar long, free at tip;
intervals not quite flat; prosternum (cf) with a rather large oval
central area, which is minutely punctate and not even flattened,
the abdominal apex with a moderately close-set pair of punctures
at each side. Length (cf ) 8.0 mm.; width 3.4 mm. New Mexico

(Fort Wingate), — Shufeldt nupera Horn

Body somewhat similar in general form but slightly less elongate, black
or paler; under surface and legs rufous, with the upper surface
polished throughout in the male, the elytra densely alutaceous in
the female; head nearly similar, the antennae much shorter in both
sexes, far from attaining the thoracic base; prothorax slightly more
transverse, two-thirds wider than long, more evenly rounded at the
sides, otherwise nearly as in nupera, except that there are generally
fewer and finer punctures in the foveal area, the foveae nearly simi-

AMARIN^E 269

lar; elytra almost similar but rather broader, the striae (cf ) as in
nupera, or ( 9 ) unimpressed and finely punctulate, the scutellar
notably short (9 ), longer (cf), free; intervals nearly flat (9 ) or as
in the preceding (cf). Length (cf 9 ) 7-5-8.2 mm.; width 3.2-3.5
mm. New Mexico (Sta. Fe), — Alary W. Greene greenei n. sp.

21 — Elytra not distinctly wider than the prothorax, the two bases as
nearly as possible equal. Body oblong-suboval, convex, shining,
the elytra distinctly alutaceous in the female, dark castaneous above,
piceous beneath, the legs dark rufous; head barely more than half as
wide as the prothorax, with prominent eyes and rather long and fine,
somewhat oblique strioles; antennae ferruginous, slender, extend-
ing well behind the thoracic base in both sexes; prothorax fully three-
fourths wider than long, the sides subevenly arcuate, rather more
converging anteriorly; apex three-fourths as wide as the base, mod-
erately sinuate, with broadly rounded angles; impressions very fee-
ble, the stria fine, subentire; foveal region with extremely few fine
punctures, almost impunctate; inner fovea feeble, irregularly lin-
eate, the outer more rounded, deeper and oblique; basal angles
slightly more than right but not rounded; elytra three-se_venths
longer than wide, gradually ogival in slightly less than apical half,
the sides feebly arcuate; striae fine but deep and sharply defined,
impunctate, feebly impressed, the scutellar only moderate in length,
oblique and not free; intervals very feebly convex. Male proster-
num with a small and narrowly oval flattened punctured area, the
abdominal apex with a pair of close-set punctures at each side;
tarsi thicker than in terrestris. Length (cf 9 ) 6.2-7.2 mm.; width
2.8-3.2 mm. Colorado (Boulder Co. and Eldora), — L. W. Casey.

scolopax n. sp.

Elytra medially distinctly wider than the prothorax, the base evidently
wider than the thoracic base as a rule 22

22 — Elytral striae very fine, unimpressed. Body narrower, elongate-
oval, convex, shining, the elytra barely visibly less shining in the
female, castaneous; under surface piceous, the legs bright rufous;
head much more than half as wide as the prothorax, with rather
prominent eyes and fine deep oblique strioles; antennae ferruginous,
slender, extending slightly behind the thoracic base; prothorax
fully three-fourths wider than long, the sides subevenly arcuate;
apex nearly four-fifths as wide as the base, just visibly sinuato-
truncate, with rather broadly rounded angles; the basal angles much
more than right but not blunt; impressions very feeble; stria fine,
slightly abbreviated; basal regions throughout the width strongly
but not densely punctate, more finely and sparsely medially; inner
fovea impressed, short, linear, the outer rounded, feebly impressed,
distant from the base; elytra fully one-half longer than wide, gradu-
ally rounded posteriorly from a little behind the middle, at the mid-
dle nearly a fifth wider than the prothorax; striae fine, evidently
punctulate, the scutellar rather long, oblique, not free at tip; inter-
vals flat. Male prosternum with a rather large and oval, finely
punctate central area, which is not even flattened, the abdominal
apex with a moderately close pair of punctures at each side; tarsi

270 MEMOIRS ON THE COLEOPTERA

long and slender. Length (cf 9 ) 6.5-7.4 mm.; width 2.7-3.0 mm.

Arizona (probably Apache Co.) apachensis Csy.

Elytral striae distinctly impressed in both sexes. Body broader and rela-
tively shorter than in the preceding, convex, piceous-black in color,
highly polished in both sexes, the elytra not at all alutaceous in the
female; under surface not paler, the legs rufous; head distinctly
more than half as wide as the prothorax, with well developed but
only moderately prominent eyes, the strioles straight, clear-cut and
oblique; antennae ferruginous, slender, extending behind the tho-
racic base; prothorax relatively small but broader, three-fourths to
four-fifths wider than long, the sides evenly and strongly arcuate,
rather strongly reflexed; apex fully three-fourths as wide as the base,
broadly though distinctly sinuate, with broadly blunt angles; basal
impression distinct, the other obsolete, the stria fine, not entire;
hind angles, basal punctuation and foveae nearly as in the preceding;
elytra shorter and more inflated, two-fifths longer than wide, a fifth
wider than the prothorax, the sides broadly arcuate; striae fine but
deep, evidently to obsoletely punctulate, the scutellar moderately
long, widely free behind as a rule; intervals very moderately (cf) -to
rather strongly (9 ) convex. Male prosternum with a shorter and
more rounded, usually unimpressed central area, which is more
densely punctate than in apachensis, the punctures of the pairs at
the abdominal apex less approximate. Length (cf 9 ) 7.0-7.8 mm.;
width 3.2-3.35 mm. Arizona. Five examples patula n. sp.

The species above described under the name brunnescens, appar-
ently cannot be founded upon one of the Colorado series identified
as brunnea Gyll., by Horn, for the pronotum is said by the latter
author not to be deplanate posteriorly at the sides in his specimens,
the prothorax only a third wider than long and the mentum tooth
acute. There is, however, a faint trace of an oblique elevation at
the outer side of the outer fovea, but less pronounced than in sev-
eral other unrelated species, such as definita, obligata or nupera,
where the mentum tooth is distinctly bidenticulate as usual.

The above description of chalcea is founded upon a form which
seems to represent the species, but I doubt that it can really be
the one described by Dejean, for the upper surface has but slight
metallic lustre, so that the name chalcea seemingly could not have
been given it*by any systematist of Dej can's sense of fitness. When
living this species exhales a very strong odor of the Pterostichid
order.

The species described in the table above as corvina, having only
one puncture at each side of the abdominal apex in the male, ought
to be related to robustula Horn, from California, but the two are

AMARIISLE 271

obviously not identical, corvina being smaller, narrower, more
parallel and with highly polished male elytra. Again, amplipennis,
as described above, must be allied rather closely to gibba Lee.,
having the elytral base similarly distinctly wider than the pro-
thorax, but gibba, of the Lake Superior region, differs in its darker
coloration, obscure femora, more convex upper surface and other
characters. The reference of apachensis Csy., by Dr. Horn, first
to remotestriata and subsequently, after another superficial obser-
vation, to gibba, were wholly arbitrary and erroneous statements.
The above series of four species from terrestris to mimica, are
those referred to remotestriata by Dr. Horn, but as these four spe-
cies are valid among themselves and remotestriata was described
from Unalaska Island, I am forced to hold that the true remote-
striata does not occur within our more southern faunal areas and
that terrestris and the other three species referred to are amply
valid.

Group V

In the aurata group the body is narrower, more parallel and
more elongate than in the preceding remotestriata group, and met-
allic coloration is the rule rather than the exception; the integu-
ments, also, are generally though not always thicker and firmer.
A few fine central punctures on the male prosternum are appar-
' ently observable in some of the species, so that the presence of this
prosternal punctulation in imitatrix, referred by Horn for this
reason to the gibba group of that author, does not have the im-
portance attached by him to the character; imitatrix is in fact a
member of the aurata group, and is included in the following table
of the species known to me at present; the line of ocellate punctures
of the eighth stria is invariably interrupted submedially:

Elytral striae distinctly punctulate. Body elongate-subparallel, rather
convex, polished, black, with feeble aeneous lustre, the thoracic side
margins diaphanously rufous; under surface black, the legs dark
rufous; head moderate, with prominent eyes and deep oblique stri-
oles; antennae slender, extending well behind the thoracic base, fusco-
ferruginous, paler basally; prothorax one-half wider than long, the
sides nearly parallel in basal, gradually converging and rounded in
apical, half; apex sinuate, much narrower than the base, with mod-
erately blunt but somewhat prominent angles; sides rounding in at
base, the angles obtuse; basal region with small scattered punctures,
feeble medially; inner fovea broadly impressed, linear, the outer

272 MEMOIRS ON THE COLEOPTERA

obsolete; elytra very slightly wider than the prothorax, about one-
half longer than wide, the sides rounding in apical third; striae fine,
very feebly impressed, the scutellar long and free but more or less
disintegrated; intervals nearly flat> femora much shorter than the
tibiae; abdominal apex with a single puncture at each side in the
male, the anterior tarsi feebly dilated. Length (cf) 6.0 mm.; width
2.45 mm. California imitatrix Horn

Elytral striae impunctate, or occasionally with minute and vestigial
punctulation 2

2 — Antennae more than usually compressed, broad, on the flat side with
the joints medially not more than one-half longer than wide. Form
shorter, oblong-suboval, convex, shining throughout, black, with
moderate aeneous lustre above, the thoracic margins not pale; under
surface greenish-black, the legs bright rufous; head three-fifths as
wide as the prothorax, the eyes notably feeble in convexity; strioles
deep, straight and oblique; antennae fuscous, paler basally, extend-
ing behind the thoracic base; prothorax scarcely one-half wider than
long, the sides subparallel in basal two-thirds, rounding and con-
verging apically; apex feebly sinuate, with short, clearly defined,
scarcely blunt angles; impressions very feeble; the only punctures
are fine and scattered between the foveae, the inner rather fine, deep
and linear, the outer small, rounded and feebly impressed; elytra
distinctly less than one-half longer than wide, nearly a fifth wider
than the prothorax, gradually ogival behind; striae fine though
sharply defined, impunctate, the scutellar moderately long and free,
disintegrated; intervals flat. Male with a very small narrow area
of extremely minute sparse punctulation at the centre of the pro-
sternum, the abdomen as in the preceding. Length (cT) 5.6 mm.;
width 2.4 mm. California (Monterey) rotundiceps n. sp.

Antennae slender, normally compressed, the medial joints narrower. . . .3.

3 — Body notably small and narrowly suboval, the integuments rather
thin, frequently with the pronotum broadly diaphanous laterally
and basally. Upper surface convex, polished throughout and aenes-
cent in both sexes; under surface pale brown, the legs pale rufous;
head nearly three-fifths as wide as the prothorax, the eyes promi-
nent; strioles somewhat short, deep, oblique; antennae testaceous,
rather long, extending well behind the prothorax, the latter one-half
wider than long, the sides feebly arcuate, more so apically and moder-
ately toward base, the basal angles obtuse and rather broadly
rounded; margins strongly reflexed; apex much narrower than the
base, feebly sinuate, with narrowly blunt angles; punctures very
fine and sparse at the foveae, the inner of which is indefinitely im-
pressed and sublinear and the outer obsolete; transverse impressions
subobsolete; elytra one-half longer than wide and rather evidently
wider than the prothorax, obtusely rounded in apical third, the par-
allel sides broadly arcuate; striae very fine, impunctate, the scutellar
feeble to altogether wanting; intervals perfectly flat. Male pro-
sternal modifications obsolete. Length (cf 9 ) 5.3-5.4 mm.; width
2.2 mm. California (San Diego). Three specimens, .jacinto n. sp.

273

Body of normal size for this section and with normally thick integu-
ment 4

4 — Prothorax shorter and more transverse, at least one-half wider than
long 5

Prothorax longer, less than one-half wider than long 8

5 — Body stouter, more oval, the sides of the prothorax distinctly rounded
from base to apex. Moderately convex, shining and rather bright
to feebly aeneous in lustre, the elytra barely at all alutaceous in the
female; under surface shining, greenish-black, the legs pale rufous;
head slightly more than half as wide as the prothorax, with large
but only moderately prominent eyes and coarse deep and slightly
oblique strioles; antennae slender, fuscous, the basal joints testa-
ceous, with blackish apices; prothorax nearly three-fifths wider than
long, widest slightly behind the middle, the arcuate sides a little
more converging anteriorly; apex three-fourths as wide as the base,
sinuate, with moderately blunt and slightly prominent angles; im-
pressions subobsolete: punctures of the foveal region numerous,
small and sparse, extending almost to the middle; inner fovea short,
broadly impressed, sublinear, the outer rounded but excessively
feeble; elytra one-half longer than wide, only slightly wider than the
prothorax, gradually ogival posteriorly; sides feebly arcuate; striae
very fine, sometimes slightly punctulate, the scutellar feeble, free,
generally in great part wanting; intervals flat. Length (9) 6.15-
6.3 mm.; width 2.5-2.6 mm. California aurata Dej.

Body more parallel, the sides of the prothorax parallel and but slightly
arcuate, rounding anteriorly 6

6 — Antennae longer, extending well behind the prothorax in the male,
shorter and extending to the thoracic base in the female. Oblong-
oval, rather convex and shining, the elytra barely at all alutaceous
in the female, black, with faint bronzy lustre, sometimes paler from
immaturity, the under surface piceo-rufous and the legs pale rufo-
flavate; head moderate, with large, rather prominent eyes and ob-
lique deep strioles; antennae fusco-testaceous, the first two joints,
and the third except at tip, paler; prothorax scarcely one-half wider
than long, less transverse than in the two following, the apex broadly
sinuate, with bluntly rounded angles; impressions nearly obsolete,
the stria fine; punctures numerous and distinct, confined wholly to
the foveal region; foveae very feebly impressed, the inner linear, the
outer small and rounded; elytra distinctly less than one-half longer
than wide, rather gradually ogival behind, slightly wider than the
prothorax; striae fine but sharp and deep.(cf), or very fine and more
superficial (9 ), the outer striae feebly punctulate and the scutellar
rather long, free at both ends; intervals perfectly flat (9 ), or nearly
so (cf). Length (cf 9 ) 6.2-6.8 mm.; width 2.7-2.8 mm. Cali-
fornia (Farallone Islands, San Francisco Co.), — Fuchs. Three ex-
amples : farallonica n. sp.

Antennae shorter and more nearly equal in the sexes, extending barely
beyond the thoracic base in the male; elytra more elongate; pro-
thorax shorter 7

T. L. Casey, Mem. Col. VIII, Oct. 1918.

274 MEMOIRS ON THE COLEOPTERA

7 — Form elongate, rather narrower than in the preceding, deep polished
black, sometimes with very feeble bronzy lustre, the female elytra
barely at all alutaceous; under surface greenish-black, the legs pale
rufous; head relatively somewhat larger than in the preceding, with
rather smaller but more prominent eyes, three-fifths as wide as the
prothorax; antennae rather slender, colored as in the preceding; pro-
thorax one-half wider than long, the basal angles slightly obtuse and
blunt; apex much narrower than the base, distinctly sinuate, with
the slightly prominent angles only narrowly blunt; punctures and
foveae nearly as in the preceding, except that the former are rather
finer and the latter more profoundly impressed; elytra (cf) nearly
one-half longer than wide, or not quite so long ( 9 ), only very slightly
wider than the prothorax, the striae fine, a little stronger and more
impressed in the male, the scutellar moderately long but much dis-
integrated, more noticeably so than in the preceding, the outer
striae sometimes faintly comminuted or subpunctulate, the seventh
stria almost completely obsolete in both sexes as in farallonica.
Length (cf 9 ) 6.3-6.8 mm.; width 2.65-2.8 mm. California (San
Francisco). Five examples taken by the writer and one by Mr.
Fuchs proba n. sp.

Form oblong-elongate, convex, black, with very faint greenish or bronzy
lustre; under surface black, the abdominal tip rufescent; legs pale
rufous; head well developed and with prominent eyes nearly as in
the preceding; antennae fusco-testaceous, the two basal joints clearer
testaceous; prothorax shorter and relatively somewhat narrower
than in either of the two preceding, somewhat more than one-half
wider than long, the sides rounding inward at base, the angles very
obtuse and blunt; apex relatively a little broader and only very feebly
sinuate, the angles broadly blunt and not prominent; transverse
impressions feeble, though evident, the stria very fine; punctures of
the foveal region very fine and sparse; inner fovea distinct, impressed,
sublinear, the outer almost completely obsolete to feeble and broadly
sublinear; elytra two-fifths longer than wide, more distinctly wider
than the prothorax than in the two preceding, the striation nearly
similar, but the scutellar stria is very variable, either a long discon-
nected series of dashes, or short, entire and free at both ends, or
short, oblique, entire, free at base but united at apex with the sutu-
ral stria, in the three specimens examined, the seventh subobsolete.
Length (c? 9 ) 5-75-6.7 mm.; width 2.4-2.7 mm. California (San
Clemente Island, off the southern coast). Four examples. The
female exceeds the male in size more notably than in the other
species Clementina n. sp.

8 — Body elongate, parallel, convex, shining, bright subcupreous to met-
allic green; elytra but faintly alutaceous; under surface black, the
legs obscure rufous; head three-fifths as wide as the prothorax, with
prominent eyes and oblique irregular strides; antennae slender,
fusco-testaceous, the first three joints clearer, extending but slightly
behind the thoracic base (cf), or shorter (9 ); prothorax a third to
two-fifths wider than long, the sides parallel, feebly arcuate, round-
ing apically; apex three-fourths as wide as the base, very feebly sin-

AMARIN^E 275

uate, with rather blunt angles; basal angles more than right but not
rounded; impressions obsolete; punctures of the foveal region rather
small and numerous; inner fovea long, broadly impressed, linear,
the outer feeble to obsolete; elytra slightly less than one-half longer
than wide, gradually ogival behind, rather distinctly wider than the
prothorax, with parallel and broadly arcuate sides; striae fine but
sharply defined, slightly impressed in the male, the seventh very fine
and feeble, subdisintegrated, the scutellar very short to completely
wanting; intervals feebly convex to flat. Length (cf 9 ) 6.0-6.2
mm.; width 2.4-2.6 mm. California (Humboldt Co. — Redwood
Creek and Hoopa Valley). Four examples hilaris n. sp.

Body parallel, elongate, convex, polished, rather bright bronze in lustre,
the female elytra evidently alutaceous; under surface black, the legs
rufous; head nearly as in the preceding, the eyes prominent; strioles
almost parallel; antennae extending but slightly behind the thoracic
base, piceous, the first three joints testaceous; prothorax never much
over a third wider than long, the sides parallel, gradually rounding
apically, the basal angles barely more than right, usually not blunt;
apex nearly as in the preceding, feebly though evidently sinuate;
impressions obsolete; punctures of the foveal region fine, few in
number and sparsely scattered; inner fovea long, broadly impressed
and linear, the outer more rounded, evident and near the basal mar-
gin; elytra almost one-half longer than wide, barely visibly (cf ) or
slightly ( 9 ) wider than the prothorax, rapidly and obtusely ogival
behind; striae very fine, similar in the sexes, the scutellar long but
more or less disintegrated, free at both ends; intervals flat in both
sexes; seventh stria very feeble. Length (cT 9 ) 6.4-7.0 mm.; width
2.6-2.8 mm. Oregon (Columbia River Valley), — Shantz. Three
specimens evanida n. sp.

Body very narrow and elongate, convex, polished, black, with barely
perceptible metallic lustre; under surface black, the legs obscure
rufous, the femora blackish ; head two-thirds as wide as the prothorax,
with rather large and prominent eyes and coarse deep oblique stri-
oles; antennae long and slender, extending rather far behind the tho-
racic base, fuscous, gradually testaceous basally; prothorax a third
to two-fifths wider than long, the parallel sides gradually a little
more rounding anteriorly, narrowly but strongly reflexed as usual,
the basal angles slightly more than right, not rounded; apex ex-
tremely feebly sinuate, with broadly blunt angles; impressions obso-
lete, the stria fine; punctures of the foveal region small, moderately
numerous; inner fovea irregularly linear, feeble, the outer obsolete
or very nearly; elytra about one-half longer than wide, gradually
ogival behind, rather distinctly wider than the prothorax; striae very
fine, the seventh nearly obsolete, the scutellar wanting or vestigial;
intervals flat. Length (cf) 5.8-6.3 mm.; width 2.35-2.4 mm. Cali-
fornia (Siskiyou Co.), — Koebele. Three specimens. . angustior n. sp.

Although feeble lineiform punctulation, or perhaps more cor-
rectly comminution, of the lateral striae is frequently observable,

276 MEMOIRS ON THE COLEOPTERA

the punctures in imitatrix seem to be somewhat different, being
distinct but not rounded or deep in all the striae except the deeper
sutural. The evanescent seventh stria is a group character, as well
as the constantly rather broadly interrupted line of ocellate punc-
tures of the eighth. The scutellar stria is less definite and more
fugitive than in any other group of this genus, although also a
feature of the very small species of group VI to some degree. It
is interesting to note that the species having a more elongate pro-
thorax are characteristic of the more northern faunas, while those
with shorter and more transverse prothorax are, so far as known,
confined to southern and insular regions.

Group VI

The species of this group are all small and include among them
the smallest of the Amarinse; they are unexpectedly numerous,
also, constituting a very difficult study; after developing sufficient
familiarity, however, the species are found to be no more indefinite
than in any other part of the Celia series. They are characterized
in general by a very convex body, with highly polished surface and
frequently pallid, though generally rather thick, integument; in all
but a few cases they are similar in the sexes, so far as lustre is con-
cerned, although some, such as karpalina, have alutaceous elytra
in the female; they also have deep and coarse, sometimes strongly
punctate, elytral striae and completely lack a prosternal punctured
spot in the male. There is seldom any trace of metallic coloration,
the name subcsnea, given by LeConte, being in great part fanciful.
It is also to be noted that the group does not occur in the Pacific
coast regions of the continent, excepting, so far as known at pres-
ent, the single species simwsa, of British Columbia. Those in my
collection may be known as follows:

Form elongate; prothorax but little wider than long, much narrowed
anteriorly, the apex deeply sinuate and with prominent, scarcely
at all blunt angles; elytra (9 ) generally feebly alutaceous 2

Form usually less elongate, the prothorax more transverse, the apex very
feebly sinuate and with broadly blunt angles 7

2 — Head at least half as wide as the prothorax - 3

Head very small, distinctly less than half as wide as the prothorax in
both sexes 4

3 — Body elongate-suboval, convex, shining, piceous-black, the proster-
num, abdomen and legs rufous; head half as wide as the prothorax,

AMARINJE 277

with rather prominent eyes and short oblique and lineiform strioles;
antennae ferruginous, extending slightly behind the thoracic base;
prothorax but little more than a fourth wider than long; apex three-
fifths as wide as the base; sides arcuate, becoming gradually parallel
behind the middle; basal angles right, the puncture very small; im-
pressions obsolescent, the stria fine; punctures of the foveal region
small, sparse and few; foveae feebly impressed, the inner sublinear
and extending to the base, the outer small, punctiform and more
discal; elytra barely perceptibly wider than the prothorax, one-half
longer than wide, very gradually ogival behind, the sides just visibly
arcuate; humeri minutely denticulate, extending slightly outside the
thoracic angles; striae not coarse but deep and distinct, finely punctu-
late, the scutellar rather long and free, much disintegrated; inter-
vals very nearly flat in the female. Length (9) 6.5 mm.; width
2.7 mm. British Columbia (Aldermere), — Keen sinuosa n. sp.

Body oblong-oval, convex, polished, black, the under surface and legs
nearly as in the preceding; head just visibly more than half as wide
as the prothorax, with the eyes well developed but only moderately
prominent, the strioles and antennae somewhat as in sinuosa, the
antennae somewhat less pallid, ferruginous; prothorax a third wider
than long, just visibly wider behind the middle than at base, the
sides evidently arcuate throughout, gradually more converging be-
fore the middle; basal angles very slightly more than right, the punc-
ture strong, symmetrically placed in the angle; apex three-fourths
as wide as the base, deeply sinuate; punctures of the foveal area
numerous and strong; inner fovea very broadly, feebly impressed,
indefinitely linear, the outer rounded, deep, punctiform and discal;
elytra not quite one-half longer than wide, at the middle as wide as
the widest part of the prothorax, ogival in apical two-fifths, the sides
broadly arcuate, the base exactly equal to the thoracic base; striae
fine but deep, very minutely, distantly and indistinctly punctulate,
the scutellar long, entire, free at tip; intervals perfectly flat in the
female. Length (9 ) 5.65 mm.; width 2.4 mm. A single example
from the Levette collection, probably taken in Colorado.

elusa n. sp.

4 — Form more slender, sides of the prothorax arcuately converging an-
teriorly only before the middle. Parallel, convex, polished, piceous-
black, with scarcely observable senescence; under surface piceous,
the legs rufous; head with relatively large and prominent eyes, the
strioles fine, linear and oblique; antennae ferruginous, slender, ex-
tending well behind the thoracic base; prothorax a third wider than
long, the parallel sides nearly straight behind the middle, except at
base, the angles slightly more than right, with symmetrically placed
puncture; apex barely three-fifths as wide as the base; punctures of
the foveal region rather coarse and numerous; foveae both deeply
impressed, rounded and next to the basal margin; elytra about one-
half longer than wide, gradually ogival in almost apical two-fifths,
very slightly wider than the widest part of the prothorax, the sides
but very feebly arcuate; striae deeply impressed but not coarse, very
moderately punctate, the scutellar rather long, free and entire;

278 MEMOIRS ON THE COLEOPTERA

intervals broadly convex. Length (cf) 6.2 mm.; width 2.4 mm.
New York (Lake Champlain) nupta n. sp.

Form less slender; thoracic sides more arcuate, converging anteriorly
from behind the middle, the prothorax often inflated and sometimes
wider than the elytra 5

5 — Prothorax inflated, wider than any part of the elytra. Body elon-
gate-oval, convex, highly polished throughout and rufo-castaneous,
the under surface paler, rufous, the legs flavo-rufous; head with
moderately prominent eyes and short feebly impressed and stib-
foveiform strioles; antennae long, ferruginous, extending to the mid-
dle of the body, rather thick, the joints very strongly obconic;
prothorax two-fifths wider than long, the sides strongly arcuate;
apex very narrow, four-sevenths as wide as the base, deeply sinuate
and with prominent though bluntly pointed angles, widest well
behind the middle, the margins very finely and not strongly re-
flexed; basal angles obtuse, not rounded, the moderate puncture
nearer base than side; impressions obsolete, the stria deep, entire;
punctures of the foveal regions few, very coarse and widely dis-
persed; inner fovea large, broadly impressed, oblong, the outer
smaller, irregular; elytra nearly one-half longer than wide, barely
twice as long as the prothorax and slightly narrower, gradually
ogival behind the middle; striae rather coarse, very deeply impressed,
strongly punctured internally, almost completely impunctate ex-
ternally, the scutellar short, free and entire; intervals everywhere
strongly convex. Length (cf) 6.3 mm.; width 2.65 mm. Colo-
rado (Boulder Co.) thoracica n. sp.

Prothorax sometimes perceptibly inflated but nowhere wider than the
elytra 6

6 — Oblong-suboval, convex, piceous-black, very faintly subaeneous, pol-
ished, the elytra frequently deep black and always with faint alu-
taceous lustre in the female; under surface piceous-black, the legs
bright rufous; head very small, much less than half as wide as the
prothorax, the eyes only moderately convex; strioles short, linear
and oblique; antennae long and slender, extending far behind the
thoracic base in the male, pale ferruginous; prothorax a third to
two-fifths wider than long, the apex narrow, deeply sinuate; sides
broadly arcuate, moderately reflexed; basal angles scarcely more than
right and not rounded; transverse impressions feeble, the anterior
close to the sinus; punctures of the foveal regions rather sparse,
moderate and not very numerous; foveae distinctly impressed, the
inner linear, the outer irregularly rounded, with the external bor-
dering surface rather prominently convex; elytra nearly one-half
(cf ) to two-fifths (9 ) longer than wide, equal in width to the pro-
thorax (cf) or just visibly wider (9 ), the sides feebly arcuate; apex
very gradually ogival; striae not coarse but rather deeply impressed,
distinctly but not coarsely punctate, the scutellar moderate, gen-
erally entire; widely free at tip; intervals broadly and subsimilarly
convex in both sexes. Length (cf 9 ) 5.4-6.5 mm.; width 2.5-2.75
mm. Lake Superior (Marquette and Duluth). Very abundant.
Thirty-one specimens subaenea Lee.

AMARIN^E 279

Oblong-suboval, larger and stouter than the preceding, one of the lar-
gest species of this section, piceous-black, with black elytra, pol-
ished, without trace of metallic lustre, the elytra faintly alutaceous
in the female; under surface piceous; legs very obscure, the femora
paler, rufous; head and antennae nearly as in the preceding, the
prothorax also nearly similar, but scarcely a third wider than long
and with more arcuate sides, the apex similar, the basal angles not
rounded and barely more than right; transverse impressions obso-
lete; punctures of the foveal regions stronger, closer and more nu-
merous, the foveae nearly similar but larger and more broadly im-
pressed; elytra subsimilar in general outline, equal in width to the
prothorax, with feebly arcuate sides; striae a little coarser and deeply
groove-like, wholly without evident punctures, the scutellar mod-
erate, entire, broadly free at tip; lateral series similarly uninterrup-
ted; intervals broadly convex, more shining than in the female of
suborned. Length (9) 6.9 mm.; width 3.1 mm. Colorado (Boul-
der Co.) hospes n. sp.

7 — Body rufous to flavo-rufous when mature 8

Body piceous to black, the head and prothorax, however, usually very
slightly paler or less black than the elytra 16

8 — Coloration of the upper surface uniform 9

Coloration bipartite, the elytra more obscure than the head and pro-
thorax 13

9 — Head relatively large, fully three-fifths as wide as the prothorax.
Form oblong-suboval, rather elongate, convex, polished through-
out and pale rufo-testaceous; femora brighter rufous than the tibiae
and tarsi; head fully as long as wide, with prominent eyes, the stri-
oles short, oblique; antennae ferruginous, distinctly longer than the
thoracic width; prothorax as elongate as in the preceding section
but with the apex very feebly sinuate, with broadly blunt angles,
a third wider than long; sides broadly arcuate, converging ante-
riorly, the basal angles slightly obtuse and blunt; impressions obso-
lete, the stria fine as usual; punctures of the foveal. regions rather
few in number but strong; foveae broadly impressed, the inner briefly
sublinear, the outer rounded and punctiform; elytra three-sevenths
longer than wide, just visibly wider than the prothorax, obtusely
ogival in apical third, the sides feebly arcuate; striae strong and im-
pressed, with very distinct close-set punctures, the scutellar rather
short, punctate, oblique and free; lateral series narrowly and indef-
initely interrupted; intervals distinctly though not strongly convex;
tarsi slender. Length (9) 5-8 mm.; width 2.5 mm. Delaware.

lucina n. sp.

Head relatively much smaller, never more than slightly exceeding half
the thoracic width 10

10 — Prothorax more elongate, nearly as in the preceding and much less
than one-half wider than long. Pale rufo-testaceous throughout,
the femora rather more flavate; lustre very shining, the elytra not
very distinctly alutaceous in the female; head slightly more than
half as wide as the prothorax, with prominent eyes and long slender
flavate antennae; prothorax barely two-fifths wider than long, the

280 MEMOIRS ox THE COLEOPTERA

sides subevenly and strongly arcuate, becoming parallel basally,
the angles right but rounded, the puncture strong, nearer base than
side; apex two-thirds as wide as the base, feebly sinuate, with broadly
blunt angles; impressions obsolete; punctures of the foveal regions
few and sparse, moderate in size; foveae feebly impressed, the inner
sublinear, the outer smaller and rounded; elytra nearly as in the
preceding in form and relationship, the strife finer, much less im-
pressed and only very finely though obviously punctate, the scutel-
lar still shorter, widely free at tip, the lateral series rather sharply
though not broadly interrupted; intervals flat. Length (9) 6.0

mm.; width 2.8 mm. New Jersey (Cape May) proditor n. sp.

Prothorax decidedly transverse, one-half or more wider than long . . . . 1 1
n- — Basal thoracic angles right and not definitely rounded, though finely
blunt at apex. Body elongate-oval, convex, polished, pale rufo-
testaceous, the legs somewhat more flavate, the femora more slen-
der than in either of the two preceding; head scarcely more than
half as wide as the prothorax, with prominent eyes and very small
strides; antennae ferruginous, slender, much longer than the tho-
racic width; prothorax distinctly more than one-half wider than long,
the sides broadly, evenly arcuate, parallel only near the base; apex
three-fourths as wide as the base, very feebly sinuate, with broadly
rounded angles; impressions obsolete; foveal regions in the type
wholly impunctate, excepting a small cluster within the inner fovea,
which is broadly, feebly impressed and sublinear, the outer very
small, feeble and punctiform; angular puncture rather small, at a
considerable distance from both base and side; elytra as wide as
the prothorax, two-fifths longer than wide, gradually ogival pos-
teriorly; striae fine, feebly impressed, extremely finely punctulate
by anteriorly oblique light, the scutellar very short, irregular; lat-
eral series very narrowly interrupted; intervals broadly, just visibly
convex. Length (9 ) 5.5 mm.; width 2.6 mm. New York (Sheeps-

head Bay, Long Island), — Shoemaker lyncea n. sp.

Basal thoracic angles definitely and distinctly rounded 12

12 — Form oblong-oval, convex, polished, the elytra not definitely less
so in the female, rufo-testaceous throughout, the femora slender;
tarsi long and slender; head barely more than half as wide as the
prothorax, with well developed prominent eyes and very small sub-
punctiform strioles; antennae obscure ferruginous, clearer basally,
much longer than the thoracic width; prothorax barely one-half
wider than long, the sides broadly, feebly arcuate, slightly more so
and more converging apically, almost parallel basally; basal angles
only very narrowly rounded; apex over two-thirds as wide as the
base, very faintly sinuate, with broadly rounded angles; impressions
obsolete; punctures of the foveal regions basal, rather coarse, mod-
erately numerous; inner fovea feeble but linear, the outer very small,
feeble, the angular puncture small or moderate, slightly nearer base
than side; elytra two-fifths longer than wide, not or scarcely wider
than the prothorax, obtusely ogival in apical third; striae rather fine
but sharp, deep and slightly impressed, somewhat finely and closely
punctate, the scutellar short and disintegrated, the lateral series

AMARIN/E 281

not interrupted; intervals evidently (cf), or very feebly (9), con-
vex. Length (cf 9 ) 4.8-5.75 mm.; width 2.3-2.6 mm. Two speci-
mens from the Levette collection, probably collected in Indiana.
One from the New Jersey seashore is apparently identical.

nugator n. sp.

Form very much as in nugator but rather more obscurely rufous, with
longer prothorax, shorter head and different hind tarsi, the basal
joint nearly as long as the next two together, while in nugator the
second joint is normally elongate relatively, the second and third
much longer than the first; surface polished; head distinctly more
than half as wide as the prothorax, with large and prominent eyes
and short feebly oblique strioles; antennae ferruginous, slender, com-
pressed as usual, extending far behind the thoracic base; prothorax
less than one-half wider than long, the sides feebly arcuate, gradu-
ally more so and converging anteriorly; apex sinuato-truncate,
nearly three-fourths as wide as the base, with broadly rounded angles;
basal angles narrowly rounded; impressions subobsolete, the stria
fine, feebly impressed; punctures of the foveal regions almost com-
pletely wanting, two or three in number in the type; inner fovea
fine, feeble and linear, the outer small, rounded, almost obsolete;
elytra two-fifths longer than wide, equal in width to the prothorax,
gradually ogival behind; striae rather fine but sharp, feebly impressed,
with very small but evident, rather well separated punctures, the
scutellar very short, oblique; lateral series narrowly interrupted.
Length (cf) 5.3 mm.; width 2.2 mm. Virginia (Fortress Monroe).

curticeps n. sp.

Form oblong-oval, stouter and much larger than nugator, pale flavo-
testaceous and shining throughout; sides of the metasternum and
the met-episterna with a few coarsish punctures; head barely half
as wide as the prothorax, with only moderately convex eyes, the
strioles short, feeble and irregular; antennae slender, ferruginous,
barely longer than the thoracic width in the female; prothorax dis-
tinctly less than one-half wider than long, wider behind the middle
than at base; sides subevenly arcuate, the obtuse basal angles rounded,
with the coarse puncture very close to the angle; apex fully two-thirds
as wide as the base, distinctly sinuate, with broadly blunt angles;
impressions obsolete; punctures of the foveal regions rather coarse,
few in number and in or near the inner fovea, which is feebly im-
pressed and briefly sublinear, the outer a small punctiform indenta-
tion; elytra not much more than a third longer than wide, evenly
rounded posteriorly, barely wider than the prothorax, with broadly
arcuate sides; striae coarse, sharply groove-like, with moderate but
distinct punctures, the scutellar short, entire, widely free behind,
the lateral series not definitely interrupted; intervals very feebly
convex. Length (9) 7-O mm.; width 3.5 mm. Kansas.

haldemani n. sp.

Form notably elongate and parallel, convex, highly polished in both sexes,
testaceous throughout; head barely more than half as wide as the
prothorax, with prominent eyes and small, unevenly impressed stri-
oles; antennae ferruginous, much longer than the thoracic width;

282 MEMOIRS ON THE COLEOPTERA

prothorax scarcely more than two-fifths wider than long, more quad-
rate than usual, the sides broadly arcuate, more converging ante-
riorly, the basal angles broadly rounded; apex three-fourths as wide
as the base, very feebly sinuate, with obtusely rounded angles;
transverse impressions barely traceable, the stria fine but rather
impressed; punctures of the foveal regions wide-spread, numerous
and moderate in size; foveae broadly and extremely feebly impressed,
the outer distinctly the smaller and less linear; elytra nearly one-
half longer than wide, exactly equal in width to the prothorax,
rather rapidly ogival behind, the sides feebly arcuate, the lateral
series not interrupted; striae moderately fine, with small but strong,
close-set punctures, deeply impressed (cf) or less so (9), the scu-
tellar moderate, entire, widely free at tip; intervals strongly convex
(cf ) or broadly and moderately (9 )• Length (cf 9 ) 6.2-6.7 mm.;
width 2.5-2.8 mm. New York (Long Island), — Shoemaker.

liquida n. sp.

13 — Elytral strise completely devoid of punctures. Elongate, subpar-
allel, convex, polished, obscure testaceous, brighter beneath, the
legs pale; elytra blackish; head nearly three-fifths as wide as the
prothorax, with prominent eyes and deep linear oblique strioles;
antennae dark ferruginous, extending far behind the thoracic base;
prothorax nearly one-half wider than long, the sides broadly arcu-
ate, gradually slightly more converging anteriorly, the basal angles
more than right and distinctly rounded; apex fully three-fourths as
wide as the base, very feebly sinuate, with broadly blunt angles;
impressions obsolete, the stria fine, not impressed; punctures of the
foveal regions numerous, very moderate; foveae broadly, moderately
impressed, the inner broadly sublinear, the outer more rounded,
close to the base; elytra two-fifths longer than wide, barely visibly
wider than the prothorax, rapidly ogival in apical third, the sides
feebly arcuate; striae moderately fine but sharply groove-like, the
scutellar entire and widely free at tip; lateral series narrowly inter-
rupted; intervals very feebly convex; abdomen with a small discal
impression near the side of each segment. Length (c?1) 6.2 mm.;
width 2.4 mm. Mexico (Colonia Garcia, Sierra Madre Mts., Chi-
huahua),— Townsend *chihuahuae n. sp.

Elytral striae punctured 14

14 — Striae finely and feebly punctate, the punctures only discoverable
by close observation under anteriorly reflected light; Sonoran fauna.
Body oblong-suboval, only moderately convex, polished through-
out in both sexes and pale testaceous, the elytra very slightly more
obscure; head small, with very prominent eyes, half as wide as the
prothorax, the strioles feebly impressed and punctiformt antennae
moderate though extending behind the thoracic base, very pale fer-
ruginous; prothorax one-half to three-fifths wider than long, the
sides arcuately converging in anterior, parallel and nearly straight in
about posterior, half, the basal angles barely more than right, nar-
rowly rounded; apex not three-fourths as wide as the base, just
visibly sinuate or subtruncate, with broadly rounded angles; impres-
sions obsolete, the stria fine; punctures of the foveal regions very

AMARIN.E 283

numerous, moderately coarse; inner fovea linear, long, feebly im-
pressed, the outer circular, small, deep and rather distant from the
base; elytra two-fifths longer than wide, not evidently wider than
the prothorax in either sex, rather gradually ogival behind; striae
rather fine, very feebly impressed, the scutellar short, free and 'irreg-
ular; lateral series not or narrowly interrupted; intervals broadly
and feebly convex in both sexes, rather less in the female. Length
(cf 9 ) 5.5-6.0 mm.; width 2.25-2.6 mm. Arizona (probably south-
ern) pimalis n. sp.

Striae distinctly punctured; Atlantic faunal regions 15

15 — Body narrowly elongate-oval, rather convex, polished in both sexes,
piceo-testaceous, the head and pronotum more flavate; under sur-
face and legs very pale rufous; integuments very thin and subhya-
line; head small, scarcely over half as wide as the prothorax, with
prominent eyes and short fine linear and oblique strioles; antennae
flavo-ferruginous, extending far behind the thoracic base; prothorax
very nearly one-half wider than long, the sides broadly, feebly arcu-
ate and slightly converging from near the base to the apex, which
is almost three-fourths as wide as the base and feebly though evi-
dently sinuate, the angles broadly blunt; basal angles obtuse and
bluntly rounded at tip; impressions feeble, the stria very fine; punc-
tures of the foveal regions strong but few in number, clustering
about the inner fovea, which is broad, feeble and sublinear, the outer
small, rounded, distant from the base; elytra not quite one-half
longer than wide, about as wide as the prothorax, very gradually
ogival from near the middle, the lateral series not interrupted;
striae fine, feebly impressed in the male, with the punctures fine, the
scutellar very short, oblique; intervals slightly convex (cf ), nearly
flat (9). Length (cf 9 ) 4-7-5-3 mm.; width 1.9-2.3 mm. New

York (Long Island), — Ernest Shoemaker shoemaker! n. sp.

Body less narrowly oblong-oval, convex, highly polished, bright rufous,
the elytra feebly picescent; under surface rufous, the legs flavo-
testaceous: head notably small, scarcely one-half as wide as the pro-
thorax; eyes moderately prominent, the strioles linear and oblique;
antennae not very slender, flavo-ferruginous, barely longer than the
thoracic width in the male; prothorax about two-fifths wider than
long; sides broadly arcuate, gradually more so and converging an-
teriorly, the basal angles slightly obtuse and narrowly rounded, with
the puncture deep and symmetrically included; apex not quite three-
fourths as wide as the base, sinuato-truncate, with very broadly
rounded angles; impressions obsolete, the stria very fine, slightly ab-
breviated; punctures of the foveal regions rather coarse, few in num-
ber, mostly near the inner fovea, which is very feeble, broadly sub-
linear, the outer small, rounded, punctiform, deeply impressed and
remote from the base; elytra not quite one-half longer than wide,
equal in width to the prothorax, gradually ogival posteriorly; striae
rather coarse, impressed, somewhat strongly and closely punctate,
the scutellar very short, incomplete or disintegrated; lateral series
widely separated but scarcely interrupted medially; intervals not-
ably convex. Length (cf) 5.2 mm.; width 2.25 mm. New York

284 MEMOIRS ON THE COLEOPTERA

(Long Island), — Shoemaker. The original type, from \Yillets Point,

Long Island, is apparently lost pallida Csy.

Body still stouter, oblong-oval and highly polished throughout in the
female; general habitus and coloration almost exactly as in the pre-
ceding, but with larger head, much longer antennae and feebler ely-
tral striation; head rather more than half as wide as the prothorax,
with very prominent eyes; antennae (9) rather stout and colored
as in the preceding male, but very much longer, greatly exceeding
the thoracic width, the individual joints longer; prothorax as in the
preceding but three-fifths wider than long, the rounding sides more
converging anteriorly, the foveal punctures smaller, and the outer
fovea feebler and less punctiform; elytra two-fifths longer than wide,
equal in width to the prothorax, gradually ogival behind, the striae
fine, just visibly impressed and very finely punctate, the scutellar
short, free and imperfect as in the preceding, the lateral line of fovese
not interrupted; intervals much broader and nearly flat. Length
(9) 6.0 mm.; width 2.75 mm. New York (Long Island), — Shoe-
maker politissima n. sp.

16 — Elytra micro-reticulate and alutaceous in the female, polished in

the male 17

Elytra smooth and highly polished in both sexes 19

17 — Elytral striae virtually impunctate. Body oblong-suboval, convex,
shining, piceous-black, the head and pronotum rufo-piceous, the
under surface and legs rather bright rufous; head distinctly more
than half as wide as the prothorax, the eyes well developed but only
moderately convex, the strioles short, linear and oblique; antennae
ferruginous, extending only to the thoracic base in the female; pro-
thorax fully three-fifths wider than long, the sides strongly rounded
and converging in apical, straighter and parallel in basal, half; basal
angles more than right but not evidently blunt; apex broad, rather
more than three-fourths as wide as the base, broadly, rather evi-
dently sinuate, with the angles moderately blunt; impressions barely
traceable; punctures of the foveal region rather numerous and ex-
tending more finely entirely across, to almost completely obsolete;
elytra barely more than a third longor than wide, scarcely visibly
wider than the prothorax, with arcuate sides, gradually strongly
arcuato-ogival behind; striae fine, feebly impressed in the female
and either completely punctureless or with very feeble and scarcely
discoverable though evident punctulation, the scutellar rather long,
entire, sometimes not free at tip; lateral series moderately interrup-
ted; intervals broadly, feebly convex to nearly flat in the female;
tarsi unusually short. Length (9) 5-6 mm.; width 2.3-2.4 mm.

Texas texana Putz.

Elytral stria rather strongly, crenately punctate; body more elongate. 18
18 — Form oblong, parallel, moderately convex, polished throughout in
the male, the female elytra subopaque, dark castaneous, the under
surface rufous, the legs flavo-rufous; head somewThat shorter than
wide, nearly three-fifths as wide as the prothorax, with moderately
prominent eyes; antennae ferruginous, slender, extending slightly
behind the thoracic base; prothorax a little less than one-half wider

AMARIN/E 285

than long, the sides parallel and feebly arcuate, more so and con-
verging apically; apex fully three-fourths as wide as the base, feebly
but evidently sinuate, with blunt angles; basal angles right and not
rounded; impressions subobsolete; punctures of the foveal region
numerous and close-set; inner fovea feeble, sublinear, the outer oval
and feeble, but with the exterior surface rather elevated; elytra fully
one-half longer than wide, parallel and slightly wider than the pro-
thorax, very abruptly and obliquely rounded in apical third, the
sutural angle well marked; striae fine, slightly impressed (cf ), not
coarsely but strongly, rather distinctly punctate, crenating the in-
tervals, especially in the female, the scutellar rather long, punctate;
lateral series slightly interrupted; intervals broadly convex (cf),
nearly flat (9). Length (cf 9 ) 6.0-6.5 mm.; width 2.7-2.9 mm.
New Mexico (Sta. Fe), — Mary \Y. Greene. [Celia acntangula Putz.

(Horn)] harpalina Lee.

Form elongate, more oval than in the preceding, nearly similar in color-
ation and lustre, except that the head and prothorax are more rufes-
cent; head large, fully three-fifths as wide as the prothorax, with
prominent though moderate eyes and feeble, rather punctiform
strides ; antennae ferruginous, slender, with less than the usual com-
pression, extending slightly behind the thoracic base; prothorax
one-half wider than long, the sides broadly, feebly arcuate, gradu-
ally a little more so and very moderately converging anteriorly;
apex sinuato-truncate, nearly four-fifths as wide as the base, the
angles obtusely rounded; basal angles right, not definitely blunt;
transverse impressions evident, the anterior feeble, the posterior
very distinct; punctures of the foveal region numerous, coarser than
in harpalina; inner fovea feeble, short, irregularly sublinear, the
outer small, obliquely sublinear, with rather convex and prominent
external surface; elytra not quite one-half longer than wide, evi-
dently wider than the prothorax, with arcuate sides, very gradually
arcuately ogival behind, the sutural angle not pronounced; striae
only moderately fine, groove-like, with not very coarse but deep,
well separated punctures crenating the intervals, which are perfectly
flat in the female; scutellar stria rather long, broadly free at tip;
lateral series rather widely interrupted. Length (9) 6.0 mm.;
width 2.5 mm. Colorado (Akron), — H. L. Shantz. ...shantzi n. sp.

19 — Species of the average size in the present group 20

Species notably small 27

20 — Form elongate, parallel, the head rather well developed 21

Form shorter, oblong-oval, the head always notable small in size 22

21 — Color piceous-black, the head, pronotum and under surface piceo-
rufous, the legs paler; head much more than half as wide as the pro-
thorax, with moderate, rather prominent eyes and short strioles;
antennae ferruginous, rather slender, largely missing in the type;
prothorax less than one-half wider than long, the sides broadly,
subevenly arcuate, barely more so apically than basally; apex nearly
three-fourths as wide as the base, feebly sinuate, with very broadly
rounded angles; basal angles more than right, slightly blunt; basal
impression evident, the apical obsolete; stria fine but broadly im-

286 MEMOIRS ON THE COLEOPTERA

pressed; punctures of the foveal region numerous, notably coarse
and deep; inner fovea broadly, feebly impressed, the outer rounded,
rather large, feebly impressed; elytra barely a third longer than wide,
subevenly rounded behind the middle, equal in width to the pro-
thorax; striae coarse, impressed, coarsely, crenately punctate, the
scutellar not long, coarse, free; intervals feebly convex; lateral series
more widely spaced medially but not interrupted. Length (9 ) 6.2
mm. ; width 2.45 mm. New Jersey lubrica n. sp.

Color rufo-piceous, the legs barely paler; elytra and entire hind body
beneath deep black; head nearly as in the preceding but still larger,
longer than wide, the antennae almost entirely missing in the type
but ferruginous and slender; prothorax only two-fifths wider than
long, parallel, the sides rounding and converging anteriorly; basal
angles rather broadly rounded at tip; apex nearly three-fourths as
wide as the base, broadly but distinctly sinuate, with bluntly rounded
angles; both transverse impressions obsolete, the stria very line;
punctures of the foveal region moderately numerous and very coarse,
the foveae irregular and very feebly impressed; elytra fully two-fifths
longer than wide, at the middle barely perceptibly wider than the
prothorax, gradually arcuately ogival posteriorly, the sides arcuate,
the surface highly polished in the female; striae finely groove-like,
not deep, scarcely at all impressed, the punctures minute and feeble;
scutellar stria short, free; lateral series not interrupted; intervals
very nearly flat; under surface unusually punctate, the first four ab-
dominal segments with rather close lateral punctures, the metasternal
sides and episterna with a few coarser punctures. Length (9 ) 6.8
mm.; width 2.85 mm. New York (Willets Point, Long Island).

nigripennis n. sp.

22 — Sides of the pronotum rather abruptly and strongly flattened broadly
toward base, somewhat as in terrestris 23

Sides of the pronotum not, or only very feebly or partially, flattened
postero-laterally 25

23 — Head rather well developed, distinctly more than half as wide as
the prothorax. Body stout, oblong-oval, moderately convex, piceous
above and beneath, the legs pale-flavo-testaceous, the femora some-
what slender; head scarcely as long as wide, with large and moder-
ately prominent eyes and short, very oblique strides ; antennae rufo-
ferruginous, not very slender, extending to the thoracic base in the
female; prothorax fully one-half wider than long, somewhat inflated,
the sides arcuate, scarcely more so, though more converging, api-
cally; basal angles much more than right, slightly blunt; apex more
than two-thirds as wide as the base, distinctly sinuate, with broadly
rounded angles; impressions obsolete, the stria very fine; foveal
punctures few in number and sparsely scattered, rather strong;
foveae feebly impressed and somewhat indefinite, the inner with a
deeper impressed line; elytra two-fifths longer than wide, at the mid-
dle very slightly wider than the prothorax, rather rapidly rounded
in about apical third; striae fine but impressed, with very fine punc-
tures, the scutellar moderate, oblique, widely free at tip; lateral

AMARINyE 287

series very narrowly interrupted ; intervals distinctly convex. Length
(9 ) 6.0 mm.; width 2.8 mm. Virginia (Fortress Monroe).

volatilis n. sp.

Head smaller, the body much smaller and less stout 24

24 — Form oblong-oval, convex, dark piceous, the prosternum and ab-
domen rufous, the legs flavo-rufous; head slightly more than half
as wide as the prothorax, with moderately prominent eyes and well
developed oblique strioles; antennae rather short, extending barely
to the thoracic base, obscure ferruginous, paler basally; prothorax
shorter, three-fifths wider than long, the sides almost evenly arcuate
from base to apex, the basal angles very obtuse and slightly blunt;
apex three-fourths as wide as the base, feebly sinuate, with broadly
rounded angles; impressions obsolete; stria fine but broadly and
rather deeply impressed; foveal punctures few and clustered loosely
at the inner fovea, which is broadly impressed, the outer small, more
distinct, oval; elytra less than one-half longer than wide, barely
wider than the prothorax, very gradually rounded behind the middle,
the sides arcuate; striae coarse, feebly impressed, rather coarsely
and conspicuously, crenately punctate, the scutellar short, oblique,
punctate, the lateral series scarcely or very narrowly interrupted;
intervals distinctly convex; tarsi long and slender. Length (9)
5.0 mrn.; width 2.0 mm. Wisconsin vegrandis n. sp.

Form oblong-oval, moderately convex, deep black, the pronotum rufo-
diaphanous at the sides posteriorly, the under surface more or less
rufous, the legs rufous; head barely half as wide as the prothorax,
with very prominent eyes and impressed strioles, rufescent at base;
antennae pale ferruginous, slender, extending far behind the tho-
racic base in the male; prothorax trapezoidal, not quite one-half wider
than long, the sides evenly converging and evenly, moderately arcu-
ate from base to apex; basal angles well rounded, the puncture much
more distant from side than base; apex only two-thirds as wide as
the base, very feebly sinuate, with broadly rounded angles; basal
impression distinct, the apical vestigial, the stria fine, not impressed;
punctures of the foveal area numerous, moderate in size, not ex-
tending to the sides; inner fovea broadly, feebly impressed, linear
anteriorly, the outer small, almost obsolete; elytra one-half longer
than wide, scarcely at all wider than the prothorax, rounded in about
apical third; striae fine, very feebly impressed, with rather fine and
notably distant punctures, the scutellar fine, free, punctate, some-
what disintegrated; lateral series not clearly or but narrowly inter-
rupted; intervals just visibly convex; tarsi long and slender as usual.
Length (cf ) 5.0 mm.; width 2.2 mm. Mississippi (Vicksburg).

fluminea n. sp.

25 — Elytra rather abruptly and obliquely rounded at apex, with distinct
though broad sutural angle and more coarsely punctate striae. Body
oblong, convex, polished, piceo-rufous, feebly aenescent, the last two
abdominal segments and the legs pale flavo-rufous; head small, very
slightly more than half as wide as the prothorax, with well developed
prominent eyes and very short strioles; antennae ferruginous, ex-
tending slightly behind the thoracic base; prothorax less than one-

288 MEMOIRS ON THE COLEOPTERA

half wider than long, the sides feebly arcuate, rounding inward at
base and more broadly so and converging apically; basal angles
obtuse and distinctly rounded; apex three-fourths as wide as the
base, sinuato-truncate, with broadly blunt angles; impressions nearly
obsolete, the stria fine but impressed; punctures of the foveal areas
small, very few and irregularly scattered; fovese broadly and very
feebly impressed; elytra oblong, two-fifths longer than wide, barely
at all wider than the prothorax, the long parallel sides virtually
straight, rounding very gradually at base; striae coarse, deeply im-
pressed and with coarse crenulate punctuation, the scutellar short
but coarse; lateral series subinterrupted; intervals convex. Length
(d71) 5.0 mm.; width 2.1 mm. Minnesota (Duluth). A single ex-
ample, taken by the writer crenulata n. sp.

Elytra gradually and arcuately narrowing behind, the punctures of the
elytral striae smaller, never very conspicuous 26

26 — Form moderately stout, oblong-oval, polished in both sexes, piceous-
black, the pronotum sometimes feebly pallescent toward the sides;
under surface piceo-rufous, the legs paler rufous; head very small,
seldom distinctly more than half as wide as the prothorax, the eyes
moderately prominent, more convex in some examples; antennae
ferruginous, extending well behind the thoracic base in the male,
shorter ( 9 ) ; prothorax more than one-half wider than long, the sides
broadly, subevenly arcuate and slightly converging from base to
apex, the basal angles right, only slightly rounded; apex very feebly
sinuate, with bluntly rounded angles; impressions rarely evident,
the stria distinct and almost entire; punctures of the foveal areas
rather numerous to very few, moderate in size, the foveae rather
irregular and feebly impressed; elytra fully two-fifths longer than
wide, just visibly wider than the prothorax. the sides feebly arcuate;
striae not very fine and somewhat impressed, finely to rather strongly
punctate, the scutellar very short and often disintegrated; intervals
more or less convex; hind tarsi long and very slender. Length (cf 9 )
4.7-5.7 mm.; width 1.8-2.5 mm. New York to North Carolina,
Lake Superior (Marquette and Duluth), Iowa and Kansas. Abun-
dant. [Am.contempta Lee.] musculus Say

Form and coloration nearly similar but distinctly larger, the under sur-
face paler, rufous, the legs more flavo-rufous; head larger, though
but little more than half as wide as the prothorax, the eyes rather
large and prominent; strioles short, more or less impressed; antennae
nearly as in musculus; prothorax fully three-fifths wider than long,
the sides evenly and more strongly arcuate, the basal angles rounded
at tip; apex similar; surface with greater tendency to postero-lateral
flattening, the punctures of the foveal areas similarly numerous to
almost wanting; the foveae are feebly impressed, the inner broad to
narrower and sublinear; elytra nearly one-half longer than wide,
not (cf) or slightly (9) wider than the prothorax; striae very fine,
not distinctly impressed, the punctures extremely fine and widely
spaced, the scutellar short and very fine; lateral series not distinctly
interrupted; intervals flat or very nearly; punctures of the under
surface extremely few and not coarse; hind tarsi long and very

AMARIN/E 289

slender. Length (c? 9 ) 5.6-6.0 mm.; width 2.3-2.65 mm. Vir-
.ginia (Fortress Monroe). Four examples virginica n. sp.

Form much shorter and relatively broader than in either of the two pre-
ceding, polished, piceous-black, the pronotum with a wide and rap-
idly basally broader testaceous lateral margin, due to diaphaneity;
under surface rufo-piceous, the legs rather obscure rufous; head mod-
erate, evidently more than half as wide as the prothorax and dis-
tinctly larger than in musculus, with rather large prominent eyes
and moderate oblique strioles; antennae long and slender, pale fer-
ruginous, extending very far behind the thoracic base in the female;
prothorax shorter, two-thirds wider than long, the sides subevenly
arcuate, a little more converging anteriorly; basal angles rounded;
apex scarcely three-fourths as wide as the base, feebly sinuate, with
rounded angles; impressions subobsolete, the stria fine, subentire;
punctures and foveae nearly as in musculus; sides without any sug-
gestion of posterior flattening; elytra much shorter, barely more
than a third longer than wide and scarcely wider than the pro-
thorax, arcuately narrowing behind the middle; striae moderately
fine, evidently impressed and having very fine punctures, the
scutellar moderately long, free, entire and almost punctureless, the
lateral series as in the two preceding; hind tarsi differing from those
of either musculus or virginica, being distinctly shorter. Length
(9) 5-6 mm.; width 2.5 mm. North Carolina (Southern Pines).

limbalis n. sp.

27 — Basal thoracic angles right; hind tarsi long, very slender and fili-
form as usual 28

Basal angles broadly obtuse; hind tarsi notably short and gradually
tapering 29

28 — Body smaller and narrower than in musculus and with relatively
much larger head, piceous, the anterior parts and under surface
more rufous, the legs flavo-rufous; head fully three-fifths as wide as
the prothorax, the eyes moderate in size and prominence, the strioles
short, oblique, impressed ; antennae ferruginous, long but rather stout,
extending far behind the thoracic base; prothorax scarcely more than
a third wider than long, the sides broadly, feebly arcuate, more
rounded apically; apex three-fourths as wide as the base, feebly sin-
uate, with broadly rounded angles; basal angles slightly blunt; im-
pressions feeble, the stria very fine; punctures near the foveae very
few in number and moderate, the foveae very feebly impressed, the
inner rather long, irregularly sublinear; elytra nearly one-half longer
than wide, very slightly wider than the prothorax, gradually round-
ing behind, the sides feebly arcuate; striae rather coarse, feebly im-
pressed, strongly and closely punctate, the scutellar very short, im-
perfect; lateral series very widely spaced medially; intervals dis-
tinctly convex. Length (d71) 4.7 mm.; width 1.9 mm. New York
(Wading River, Long Island), — Schott paulula n. sp.

Body still smaller and narrower than in paulula, shining, black, the an-
terior parts piceous; under surface blackish-piceous, the legs bright
rufous; head nearly three-fifths as wide as the prothorax, with rather
T. L. Casey, Mem. Col. VIII, Oct. 1918.

290 MEMOIRS ON THE COLEOPTERA

large and remarkably prominent eyes and very small but linear
strides; antennae long, extending far behind the prothorax, slender
on the uncompressed side, pale ferruginous; prothorax only a third
wider than long, the sides very moderately, evenly converging from
base to apex and feebly, evenly arcuate, only just visibly more con-
verging apically; apex nearly four-fifths as wide as the base, very
feebly sinuate or sinuato-truncate, with rounded angles; basal angles
right, with the tips slightly blunt; basal impression feeble, the apical
obsolete, the stria very fine; punctures virtually wanting, the fovese
so feeble as to be undefinable; postero-lateral parts evidently flat-
tened; elytra not quite one-half longer than wide and very slightly
wider than the prothorax, rather gradually rounding behind, the
sides broadly arcuate; striae very fine, feebly impressed, minutely
and not closely punctulate, the scutellar long, oblique, not free pos-
teriorly; lateral series not definitely interrupted; intervals feebly
convex. Length (cf) 4.5 mm.; width 1.8 mm. Virginia (Fortress

Monroe) scintilla n. sp.

29 — Size smaller, the form, especially, shorter than in either of the two
preceding, blackish, the anterior parts and under surface obscure,
the legs brighter, rufous; surface polished in both sexes; head three-
fifths as wide as the prothorax, with rather small and very prom-
inent eyes, the ferruginous antennae extending far behind the tho-
racic base in both sexes, though shorter in the female than in the
male; prothorax much shorter than in the two preceding, one-half
to nearly three-fifths wider than long, the apex fully three-fourths
as wide as the base and barely visibly sinuate, with very broadly
rounded angles; sides evenly rounded; basal angles very much more
than right, though scarcely blunt; posterior impression feeble, the
anterior obsolete, the stria very fine; foveal punctures small and
extremely few or wanting, the inner fovea broadly impressed, sub-
linear, the outer very small, rounded and so feeble as to be almost
invisible; surface sometimes but not always flattened postero-later-
ally; margin very finely reflexed; elytra a third to two-fifths longer
than wide, slightly (cf) or much (9) wider than the prothorax,
somewhat rapidly ogival behind; striae fine, feebly impressed, slightly
punctulate, sometimes virtually impunctate, the scutellar notably
short, oblique; lateral series narrowly interrupted; intervals distinctly
though not strongly convex in both sexes. Length (cf 9 ) 3.9-4.4
mm.; width 1.7-2.0 mm. North Carolina (Southern Pines),—
Manee. Three examples brevitarsis n. sp.

The species named rubrica by Haldeman, remains unknown, and
I have seen nothing corresponding closely with the short diagnosis
of the author; this is wholly insufficient to discriminate it among
the numerous other pallid species, and the dimensions given by
Haldeman — 8 by 3 mm. — very greatly exceed those of any other
species of this group known to me at present. I doubt also that
the original type is still in existence. Ferruginea Csy., which was

AMARIN^E 291

united with rubrica by Horn, is apparently peculiar, not only in
the absence of thoracic basal punctures, which character however
is sometimes manifest individually in other species, but also in the
small eyes and in the vestiture of the under surface of the anterior
male tarsi, described as densely pubescent in two series; this ves-
titure usually consists of two rows of subelevated membranous
plates. I have tried to identify the lost pallida Csy., from material
very kindly sent me with that object in view by Schott and Shoe-
maker, but am very doubtful of the indentity of the form above
described under that name. The eyes in this example se.em to be
larger, the antennae just a bit longer and the general form of the
body perceptibly narrower.*

The two specimens representing texana Putz., above described,
hold together very well in general characters, but exhibit even
unusual variability in some special characters, such as the punc-
tuation of the pronotum and of the elytral striae; the tarsi, micro-
reticulation of the female elytra, general outline of the body an£
the coloration throughout are, however, virtually constant.

Celia acutangula Putz., was placed in synonymy with harpalina
by Horn, but on reading the original description, I am almost con-
vinced that this is a mistake, perhaps not quite so marked as the
association of pallida with subcenea, but probable nevertheless.
However, I have not seen anything that can strictly be identified
as acutangula and so place the species under harpalina, though dis-
claiming any responsibility for this course.

The species near musculus Say, form a rather difficult study.
Virginica is larger, with very fine and finely punctulate striae and
flat intervals; it also has a larger head and relatively larger eyes.
Limbalis has shorter prothorax and elytra, larger head and shorter
hind tarsi; the hind tarsi are much less abbreviated or tapering in
limbalis, however, than they are in the comparatively minute brevi-
tarsis from the same region. The three species volatilis, fluminea
and vegrandis, separated because of the postero-lateral flattening
of the pronotum, similar to that of the terrestris series, are distinct
among themselves and quite different from musculus, but it should
be remarked that this flattening has but little systematic value

* This, as well as about a dozen other unique types.-including those of Amara
marylandica and ferruginea, disappeared from my collection while temporarily at the
Cambridge Museum many years ago, and I have never been able to trace them.

292 MEMOIRS ON THE COLEOPTERA

either here or in the terrestris group, because of its inconstancy;
in less developed stages it is extremely difficult to recognize at all
in some individuals, so that but little reliance should be placed upon
that feature alone. I am by no means sure that the very small
and narrower specimen, represented by the smaller measurements
under musculus, really belongs to that species, and for a long time
I had it separated under a different name; more specimens are
desirable, however, before coming to a conclusion ; this small speci-
men is from Marquette, where normal examples are abundant.

Throughout this group the apex of the last ventral segment has
.two setigerous pores at each side in the female and constantly but
one in the male. The anterior tarsi of the male are only feebly
dilated as a rule, and usually much less so than in Amara.

Amara Bon.

In the European fauna this genus and Celia are about equally
well represented, but in that of North America it is far less numerous
in species than Celia; at the same time, however, it apparently in-
cludes rather more species than are admitted in the European
fauna, but whether or not this is an actual fact depends so much
upon standards of taxonomic discrimination, that no useful com-
parisons can be made except through the study of both faunas by
the same systematist. It should be remembered also that the
European faunal region is only equivalent to that of North America
east of the Rocky Mountains.

In the genus Amara care should be taken not to overestimate the
importance of strial modifications, for there may be feeble though
sensible punctulation in some individuals in which the striae are
normally wholly impunctate; in basillaris, however, the punctures
are so conspicuous that I am disposed to make a separate group of
that species. In the short table drawn up by Horn (Tr. Am. Ent.
Soc., 1875, p. 127), the carination of the antennae is made the pri-
mary taxonomic character, while in the treatment of Mr. Hayward
(1. c., 1908, p. 49), it is the presence or absence of an ocellate sub-
scutellar puncture which is given first importance; I am convinced
that Mr. Hayward's conception is preferable. The carination of
the third antennal joint is very obvious in some species, but in many
others becomes so indefinite that group assignment becomes vir-

AMARIN/E 293

tually impossible under the Hornian system. I have therefore dis-
regarded this character in defining groups. The name Amara
would seem to imply that the lack of polished metallic lustre may
be prevalent among the European species, but the decided reverse
of this is true of our species, a large proportion of which are bril-
liantly aeneous. I would suggest three groups for the North Amer-
ican fauna as follows :

Elytral striae not or very feebly and indefinitely punctate 2

Elytral striae strongly punctate 3

2 — Prosternum of the male with a deep punctiform central fovea, some-
what as in Celia calif ornica; body larger, more oblong; elytra with-
out an ocellate subscutellar puncture; third antennal joint not cari-

nate Group I (insignis)

Prosternum of the male not or very feebly modified; body more fusiform

and smaller in size Group II (impuncticollis)

3 — Prothorax shorter than in any other species, nearly twice as wide as
long; antennae not carinate; elytra without a subscutellar ocellate
puncture; hind tibiae of the male still more plentifully pubescent
than in the other species Group III (basillaris)

I

Group III, founded upon Amara basillaris of Say, differs greatly
from the other species of Amara, and the more abundant pubescence
of the male hind tibiae, as well as the short prothorax, would seem
to indicate a peculiar and isolated type of this genus. The pres-
ence of distinct strial punctures is also a marked peculiarity. I
have no representative of the species at present; it was said by
Horn that Amara marylandica Csy., is nothing more than basillaris,
but the whereabouts of the type of marylandica has been unknown
to me for many years. The characters given above are taken
from Hayward.

Group I

The species of this group are few in number and confined to the
coast of California and to the neighboring islands, from Sta. Rosa
to Guadalupe; so far as known to me they may be described as
follows :

Body more narrowly oblong-oval, aeneous, greenish or bluish in lustre. 2
Body stouter, more oval and more convex, the coloration never other
than obscure aeneous or bronzed; elytral striae finer, with flatter in-
tervals; antennae pale ferrugineo-testaceous 4

2 — Lateral line of ocellate elytral punctures broadly and sharply inter-
rupted; antennae piceous except basally. Body oblong-oval, con-
vex, shining, black, without obvious metallic lustre, the under sur-

294 MEMOIRS ON THE COLEOPTERA

face and femora black, the tibiae and tarsi obscure rufous; elytra (9 )
only feebly alutaceous; head scarcely more than half as wide as the
prothorax, the eyes only moderately prominent, the strioles rather
short, coarsely impressed, subparallel; antennae piceous-black, the
three basal joints obscure testaceous; prothorax three-fourths wider
than long, the sides broadly arcuate, becoming parallel in about
basal half; apex fully three-fourths as wide as the base; feebly sinuato-
truncate, with bluntly rounded angles; basal angles right and only
slightly blunt; base feebly sinuate at each side; impressions subob-
solete, the stria moderate, much abbreviated; foveal area impunc-
tate; inner fovea fine, feeble, long and linear, the outer linear, pos-
teriorly oblique outwardly; elytra one-half longer than wide, at the
middle distinctly wider than the prothorax, gradually convergently
rounded behind the middle; striae very fine, feebly subpunctulate
laterally, the scutellar long, oblique, not free at tip; intervals broadly,
feebly convex, the convexity especially feeble toward the sides; tarsi
long, slender. Length (9) 9.3 mm.; width 3.8 mm. California
(San Clemente Island) perspecta n. sp.

Lateral series with the punctures more widely, irregularly spaced medi-
ally, but not definitely interrupted; antennae ferruginous, sometimes
very feebly infuscate, excepting the four basal jeints 3

3 — Form rather.stout, larger in size, shining, black, with aeneous lustre,
sometimes decidedly blue and rarely greenish; femora nearly black,
the tibiae and tarsi obscure rufous; head half as wide as the prothorax,
with well developed but only moderately prominent eyes; prothorax
three-fifths to two-thirds wider than long, the sides parallel, feebly
arcuate, more so and converging anteriorly; apex broad, feebly sinu-
ate, the angles blunt; basal angles much more than right though not
rounded; margins abruptly and strongly but not broadly reflexed;
impressions obsolete; foveal punctures numerous to almost wanting;
inner fovea long, linear, the outer rounded, feebly impressed, dis-
tant from the base; elytra nearly one-half longer than wide, about
equal in width to the prothorax, rapidly and broadly rounded be-
hind; striae not very fine, impunctate, groove-like, sometimes im-
pressed, the scutellar long, oblique, narrowly free at tip and generally
widely free at base; anterior tarsi very broadly dilated (cf ); elytra
(9) feebly to densely alutaceous; under surface punctureless.
Length (c?) 8.8-10.0, (9) 9.8-11.0 mm.; width (cf) 3-75-4-3, (9)
4.4-4.9 mm. California (middle coast regions). Said to occur
also northwardly as far as Sitka, Alaska. [Am. ccerulea and com-
pacta Mots.] "... .insignis Dej.

Form narrower, the size notably smaller; coloration almost similar, ex-
cept that the legs are uniformly rufous throughout and the. antennae
very pale ferruginous; head slightly more than half as wide as the
prothorax, the eyes rather more prominent than in insignis; pro-
thorax almost similar throughout, except that it is relatively not
quite so large; elytra fully one-half longer than wide, a little less ( 9 ),
more gradually ogival behind than in insignis and, at the middle of
the more arcuate sides, very distinctly wider than the prothorax;
striae finer, impunctate, the scutellar very long, nearly as in insignis;

AMARIN.E 295

intervals not differing much, except in lustre, in the two sexes, but
varying from perfectly flat to notably convex; hind tarsi long,
rather stout in the male type, which has perfectly flat strial inter-
vals, but distinctly more slender in all the other examples of both
sexes. Length (cf) 8.0-9.5, (9) 9.5-10.0 mm.; width (cf) 3.6-4.0,
(9 ) 4.3-4.4 mm. California (San Diego) tarsalis n. sp.

4 — Prothorax very slightly wider behind the middle than at base, stout,
convex, rather shining, the elytra alutaceous in the female, black,
with feeble obscure bronze lustre; under surface black, the legs and
epipleura rufous; head well developed, rather more than half as
wide as the prothorax, the eyes rather feebly convex; antennae mod-
erate in length; prothorax three-fifths wider than long, the sides
subevenly and distinctly arcuate from the obtuse and somewhat
blunt basal angles to the apex, which is broad, feebly sinuate and
with broadly blunt angles; impressions obsolete or nearly so; foveal
region usually punctureless, sometimes with a few fine feeble punc-
tures at the inner fovea, which is distinct and linear, the outer small,
rounded, sometimes nearly obsolete; elytra barely more than a third
longer than wide, in the female, and slightly wider than the protho-
rax, broadly but somewhat gradually ogival behind; striae fine but
sharp, impunctate, the scutellar long, oblique; lateral series very
remotely spaced medially; intervals flat, feebly convex on the decliv-
ity. Length (9) 9.4-10.0 mm.; width 4.4-5.0 mm. California
(Island of San Clemente). Six examples insularis Horn

Prothorax widest at base, with oblique and feebly, evenly arcuate sides
thence to the apex; body rather less stout, similar in coloration and
lustre, the elytra feebly alutaceous, the legs and epipleura more ob-
scurely rufous; head and antennae nearly similar, the former dis-
tinctly more than half as wide as the prothorax, the eyes only feebly
convex; prothorax shorter and three-fourths wider than long; basal
angles obtusely rounded; apex narrower and more sinuate, not quite
three-fourths as wide as the base, the angles similarly blunt at apex;
surface similar, the outer fovea more postero-laterally oblique; ely-
tra narrower and more elongate, nearly one-half longer than wide in
the female, otherwise almost similar in outline, less evidently wider
than the prothorax; striae still finer, extremely tenuous, almost obso-
lete externally and minutely broken or comminuted, the scutellar
similar but much finer; lateral line of punctures broadly interrupted
medially; intervals perfectly flat throughout, not differing on the
declivity. Length (9) 10.0 mm.; width 4.4 mm. California (Is-
land of Guadalupe) guadalupensis n. sp.

The remarkable variations observable, even with the limited
material at hand, in the insignis group, would seem to imply a
mixture of some closely allied forms, and perhaps the names of
Motschulsky will prove to be valid, subspecifically at least. The
females of insignis may have sensibly convex and rather shining to
perfectly flat and subopaque intervals, and, although when present

296 MEMOIRS ON THE COLEOPTERA

the pronotal punctures are confined to the foveal region, in one speci-
men they are extended forward broadly and loosely near the sides
to the apex; generally there is no trace of this singular character.
The male type of tarsalis differs from all the other San Diego males
in its larger size, more elongate form, thicker tarsi and perfectly
flat strial intervals.

Group II

This group includes virtually all of our species, only basillaris and
the small preceding group being incompatible. They are extremely
difficult to define in such a way as to be surely identifiable, espe-
cially in view of their considerable number, but so far as I am able
to determine, they may be separated by the following characters:

Elytra with an ocellate subscutellar puncture, forming the anterior end of
the scutellar stria 2

Elytra without trace of an ocellate subscutellar puncture II

2 — Sides of the prothorax evenly converging and very evenly arcuate
from base to apex; third antennal joint without distinct carina.. . .3

Sides always more rounding and convergent apically than basally; third
antennal joint with more or less evident subbasal carination 5

3 — Antennae ( 9 ) notably stout, piceous, slender and pale basally. Form
regularly oblong-oval, convex, shining, with pronounced bronzy-
aeneous lustre; elytra not distinctly alutaceous in the female, though
less polished; under surface and epipleura obscure rufous, the meta-
sternum, its episterna, and the abdomen, deep black; legs obscure
rufous, the femora blackish; head distinctly less than half as wide as
the prothorax, the eyes well developed but only slightly prominent;
antennae much shorter than the thoracic width; prothorax one-half
wider than long, the apex sinuate, with moderately blunt angles,
four-sevenths as wide as the base; evenly converging sides rather
strongly, evenly arcuate; foveae impunctate, the inner linear but
very feeble, the outer rounded, feebly impressed, far from the sides
and nearly as far from the base; basal angles right, narrowly rounded,
the puncture much further from side than base; elytra two-fifths
longer than wide, as wide as the prothorax, gradually ogival from
about the middle; striae rather fine, impressed suturally, strongly
toward tip, impunctate, the scutellar oblique, free or not behind;
lateral series not interrupted; intervals, except apically, nearly flat.
Length (9) 8.0 mm.; width 3.5 mm. New York (Willets Point,
Long Island) arcuata n. sp.

Antennae very slender in both sexes and much less compressed, about as
long as the thoracic width; converging sides of the prothorax from
base to apex very feebly but evenly arcuate 4

4 — Body smaller, more narrowly oval, the subapical sinus of the elytra
shallow and inconspicuous; color black, but usually with moderate
aeneous lustre, black beneath and somewhat greenish; legs dark

297

rufous, with blackish femora; head nearly as in the preceding, the
longer and more slender antennae piceous, the three basal joints and
nearly half of the fourth pale testaceous; prothorax less transverse,
two-fifths wider than long or less; apex three-fifths as wide as the
base, deeply sinuate, with prominent and well defined, apically very
narrowly blunt angles; surface nearly as in the preceding but with
still ^nore nearly obsolete foveae; elytra one-half longer than wide,
as wide as the prothorax, gradually ogival behind the middle; striae
fine, coarse and groove-like* posteriorly, the seventh very feeble,
the scutellar oblique, variable; lateral line of punctures not interrup-
ted ; intervals very nearly flat throughout the length. Length (cf 9 )
6.7-7.8 mm.; width 2.8-3.4 mm- New York, Maryland and Vir-
ginia. [Am. anthracina Hald.] impuncticollis Say

Body larger, less narrowly oval, with the subapical sinus of the elytra
more abruptly formed, deeper and more conspicuous; coloration
similar, except that the surface lustre, though shining, is not metallic
to any obvious degree; head a little larger, otherwise similar; pro-
thorax somewhat more elongate; elytra rather more obtuse behind,
the striation similar. Length (9) 8.5 mm.; width 3.8 mm. Mis-
sissippi (Vicksburg) difficilis Lee.

5 — Elytra very gradually narrowed behind and feebly, subevenly arcu-
ate from before the middle to the acute apex, the apical part of the
disk very gradually declivous. Elongate-oval, convex, rather shin-
ing, deep black, without metallic lustre above, greenish-metallic
beneath; legs dark rufous, the femora black; head almost half as
wide as the thoracic base, a little narrower than the apex as usual;
eyes moderately convex; antennae rather long, piceous-black, the
first three joints and base of the fourth bright testaceous; prothorax
widest at base, not quite one-half wider than long; apex three-fifths
as wide as the base, very deeply sinuate, with prominent angles;
sides only slightly more arcuate and converging anteriorly; surface
nearly smooth, the stria fine; foveae feeble, impunctate, the inner
linear, the outer oval, oblique; basal angles right, barely at all
blunt, the puncture a little nearer base than side; margins finely but
strongly reflexed; elytra slightly more than one-half longer than
wide, submedially just visibly wider than the prothorax, the sides
more gradually oblique and feebly arcuate posteriorly than in any
other species, the sinus rather shallow; striae fine, impunctate, only
a little coarser apically; intervals nearly flat throughout but feebly
convex near the apex. Length (9 ) 9.0 mm.; width 3.8 mm. New

Mexico (Sta. Fe), — Cockerell acuminata n. sp.

Elytra more rapidly and less acutely rounding behind as in fallax, the

apical declivity steeper 6

6 — Larger species, somewhat as in fallax 7

Smaller species, seldom much over 7 mm. in length 8

7 — Form rather stout, oblong-oval, moderately convex and shining, the
elytra sericeous in the female, black, with feeble bronze or greenish
lustre, black beneath, the legs black throughout or partially piceous-
black; head slightly less than half as wide as the prothorax, narrower
than the thoracic apex, the eyes large and rather strongly convex;

298 MEMOIRS ON THE COLEOPTERA

antennae as long as the thoracic width, black, the first three and one-
half joints bright testaceous; prothorax one-half to nearly three-
fifths wider than long, the sides broadly rounding before the middle;
sometimes subparallel basally; apex four-sevenths as wide as the
base, deeply sinuate, with prominent angles; foveae impunctate, in-
definite, a small discal lineiform incisure sometimes representing the
inner; basal angles right; elytra one-half longer than wide, barely at
all wider than the prothorax; striae fine, very feebly impressed,
coarser and deeper on the declivity, impunctate; punctures of the
lateral series very remote and irregularly spaced medially. Length
(cf 9 ) 8.7-9.5 mm.; width 3.8-3.9 mm. California (Los Angeles
and San Francisco) mystica n. sp.

Form oblong-oval, rather convex, shining, the elytra sericeous in the
female; upper surface with bronzy-aeneous lustre; under surface
black, the legs rufo-piceous or blackish, the femora always black;
head and antennae nearly as in the preceding, the former slightly
smaller, much less than half as wide as the prothorax, the latter
similar in almost all respects, except that the apex is less deeply
sinuate; elytra almost similar but still a little more elongate, fully
one-half longer than wide, with the surface in the female more densely
subopaque and the elytral striae finer and feebler, similarly impunc-
tate, the intervals perfectly flat as a rule, and not very slightly
convex as they are in the preceding; striae similarly coarser, with
more convex intervals on the posterior declivity. Length (cf 9 )
8.0-9.3 mm.; width 3.5-3.9 mm. Ontario to North Carolina, New
Hampshire, Iowa and Lake Superior to Colorado (Boulder Co.).
Abundant fallax Lee.

Form rather more narrowly oblong-oval than in fallax and smaller in
size; color and lustre almost similar, the female elytra rather less
opaculate; head subsimilar, much less than half as wide as the pro-
thorax, the antennae rather longer; prothorax nearly similar but
rather less transverse and more deeply sinuate at apex, with more
prominent apical angles; elytra similar in general appearance and
relationship with the anterior parts, but evidently still more elon-
gate, often more than one-half longer than wide; striae not quite so
fine, the intervals very feebly convex. Length (cf 9 ) 7.7-8.7 mm.;
width 3.2-3.7 mm. California (Humboldt to Los Angeles), Nevada
(Reno), Idaho (Cceur d'Alene), Utah (Provo) and New Mexico
(Fort Wingate). Very abundant, representing fallax in the western
regions hesperia n. sp.

8 — Legs black; body narrow and elongate. Black with aeneo-cupreous
lustre above, the under surface black; tibiae and stout tarsal setae
fulvous; head fully half as wide as the prothorax, the eyes rather
large and prominent; antennae black, the three basal joints bright
testaceous, subequal in the sexes, rather stout, extending scarcely
beyond the thoracic base; prothorax nearly three-fifths wider than
long and only a little more than a third as lon^ as the elytra, the
sides broadly arcuate, converging in about apical, subparallel in
basal, half; apex two-thirds as wide as the base, rather deeply sin-
uate, with prominent, bluntly pointed angles; basal angles right,

AMARINVE 299

not rounded, the puncture symmetrically close to the angulation;
surface completely impunctate, with very fine stria; inner fovea very
feeble, linear, short and remote from the base, the outer wholly
obsolete; elytra one-half longer than wide, barely at all wider than
the prothorax, gradually but not narrowly ogival behind, the par-
allel sides broadly arcuate, the lateral series not interrupted; striae
fine, feebly impressed, impunctate, the seventh as distinct as the
others, the scutellar very long; intervals feebly but distinctly con-
vex. Length (cf 9 ) 6.7-6.8 mm.; width 2.7-2.8 mm. British Co-
lumbia (Inverness), — J. H. Keen keeni n. sp.

Legs very obscure rufous or piceous as a rule, generally with black
femora 9

9 — Body rather broadly oblong-suboval and moderately convex, black,
with greenish or cupreo-aeneous lustre, the elytra barely visibly
alutaceous or less shining in the female; under surface greenish-black;
head very nearly half as wide as the prothorax, the eyes rather large
but not very convex; strioles well developed, oblique; antennae long,
rather slender, extending well behind the thoracic base, blackish,
the first three joints and base of the fourth pale testaceous; prothorax
only two-fifths wider than long, the sides feebly converging and
nearly straight to beyond the middle, thence rounding and con-
verging to the apex, which is two-thirds as wide as the base and
rather deeply sinuate, with obtusely prominent angles; basal angles
right, the puncture but little further from side than base; impressions
subobsolete; stria fine but impressed and distinct, the surface im-
punctate; foveae broadly impressed, the inner linear, its own length
from the base, the outer extremely feeble, oblique, sometimes obso-
lete; elytra one-half (d1) to two-fifths (9 ) longer than wide, gradu-
ally rounding behind the middle, very slightly wider than the pro-
thorax; striae fine, impunctate, scarcely impressed, the scutellar
very moderate; intervals not quite flat. Length (cf 9 ) 6.8-7.6 mm. ;
width 3.2-3.35 mm. Lake Superior (Marquette and Bayfield). Six
specimens lacustrina n. sp.

Body almost similarly broad and oblong-suboval, the male shining, green-
ish-metallic in lustre; elytra micro-reticulate but shining; under
surface shining, greenish-black; legs black, the tibiae dark rufous;
head small, not quite half as wide as the prothorax; eyes prominent,
the strioles linear and oblique; antennae in great part missing in the
type but pale testaceous basally; prothorax transverse, fully one-half
wider than long, the arcuate sides gradually nearly straight and sub-
parallel posteriorly; apex deeply and evenly sinuate, only two-thirds
as wide as the base, the prominent angles very narrowly blunt at
tip; basal angles right, not rounded, the puncture close to both
base and side but not in the extreme apex of the angle; transverse
impressions evident but feeble, the stria distinct in a broad feeble
impression; foveae subobsolete and altogether indefinite, the short
coarse incised dash of the inner distinct; elytra one-half longer than
wide, just visibly wider than the prothorax and gradually ogivally
rounded behind from near the middle; striae fine, impunctate, very
slightly coarser on the declivity, the scutellar oblique, not free; in-

300 MEMOIRS ON THE COLEOPTERA

tervals flat; lateral series widely spaced medially but not interrupted.
Length (cf) 7.2 mm.; width 3.1 mm. Colorado (Boulder Co.), —
L. W. Casey laurana n. sp.

Body notably narrow, elongate-suboval and convex 10

10 — Legs obscure rufous throughout, only the anterior femora black;
surface highly polished, very bright aeneous above, greenish-black
beneath; head rather distinctly less than half as wide as the pro-
thorax, the eyes somewhat prominent; antennae slender, fusco-tes-
taceous, the three basal joints clearer; prothorax slightly less than
one-half wider than long, rather widest at base, the sides broadly,
subevenly arcuate, somewhat more converging apically; apex two-
thirds as wide as the base, very deeply sinuate; basal angles right,
not rounded, the puncture but little nearer base than side; impres-
sions feeble but traceable; stria very fine; foveae completely impunc-
tate and subobsolete, the inner traceable as a short discal line; ely-
tra equal in width to the prothorax, very evenly and gradually ogival
in posterior half; striae fine, impunctate, sharp, not at all impressed,
the scutellar long; lateral series not interrupted; intervals perfectly
flat; striae coarse on the declivity. Length (c?) 6.7 mm.; width 2.8
mm. Minnesota (Duluth) otiosa n. sp.

Legs piceo-rufous, all the femora black; surface shining, the elytra barely
less so in the female, cupreo-aeneous; under surface black, with green-
ish lustre; head rather well developed, somewhat more than half as
wide as the prothorax, with rather prominent eyes; antennae slender,
extending about to the thoracic base, black, the first three joints
and base of the fourth pale testaceous; prothorax only a third wider
than long, the sides nearly straight and subparallel, gradually round-
ing and converging before the middle; basal angles right, not rounded,
the puncture close to the base and barely further from the side; apex
two-thirds as wide as the base, only moderately sinuate, with broadly
rounded angles; impressions feeble, the stria very fine; foveae im-
punctate, indefinite, the inner broadly impressed and very shallow,
the outer small and obsolescent; elytra fully one-half longer than
wide, longer than in the male of otiosa, fully as wide as the pro-
thorax, very gradually ogival posteriorly; striae fine, barely at all
impressed, finely, closely, irregularly and very indistinctly punctu-
late, slightly coarser apically, the scutellar moderate; lateral series
narrowly interrupted; intervals almost flat. Length (9) 6.9 mm.;
width 3.0 mm. Utah (Provo), — Wickham provoana n. sp.

n — Pronotum with the foveal region punctured at least to some extent;
posterior thoracic puncture very close to the angle 12

Pronotum impunctate throughout, except rarely and in a peculiar man-
ner in the polita section, where the thoracic foveae are deep 14

12 — Outer fovea bordered externally by a short but rather prominent
ridge, not attaining the base; entire foveal region very finely, rather
closely punctured. Body elongate-suboval, convex, polished, the
elytra strongly shining in the female, black, with scarcely visible
bronzy lustre, the under surface piceo-rufous, the legs dark rufous
throughout; head well developed, evidently more than half as wide
as the prothorax, the eyes rather large and prominent; strioles deep

AMARIN/E 301

•

and oblique; antennae moderate, black, the first three joints testa-
ceous; prothorax with the sides subparallel and feebly arcuate, grad-
ually more so and converging anteriorly; apex two-thirds as wide as
the base, distinctly though not deeply sinuate, the angles not much
advanced and obtusely blunt; basal angles right, not rounded; im-
pressions feeble, the anterior distant from the apex; stria very fine;
inner fovea extremely shallow but with a long fine incised line, the
outer small, oval, feebly impressed; elytra fully one-half longer than
wide, gradually obtusely ogival behind, just visibly wider than the
prothorax, the sides feebly arcuate, the lateral series rather widely
interrupted; striae fine but sharp and deep, impunctate, the scutellar
rather long, deep and oblique; seventh stria distinct, finely commin-
uted; intervals not quite flat, not more convex and with the striae
not much coarser on the declivity. Length (9) 7-3 mm.; width
3.0 mm. California (near San Francisco), — Dunn. . . .vigilax n. sp.

Outer fovea with the surface exterior thereto not at all prominent; an-
terior male tarsi feebly dilated 13

13 — Punctures of the foveal region very minute and sparsely scattered
almost throughout; elytral striae distinctly punctulate; body rather
narrowly oblong-oval, convex, polished, greenish-black; under sur-
face black, the legs piceo-rufous; head rather large, with prominent
eyes, almost three-fifths as wide as the prothorax, the strides im-
pressed within, almost parallel; antennae slender, scarcely extending
to the thoracic base, piceous, the first three joints testaceous; pro-
thorax barely a third wider than long, the sides very feebly converg-
ing and slightly arcuate, gradually more rounding and convergent
anteriorly; apex three-fourths as wide as the base, extremely feebly
sinuate, with broadly rounded angles, the basal right, not rounded;
impressions obsolete, the stria very fine; inner fovea linear, oblique,
sharply incised, the outer small, impressed, punctiform and distant
from the base; elytra only just visibly wider than the prothorax,
very nearly one-half longer than wide, gradually obtusely ogival
behind, the sides broadly arcuate; lateral series coarse and close-set,
sharply interrupted submedially; striae rather fine but sharply deep
and with feeble but distinct punctulation, which is less evident sutu-
rally than externally, the seventh a row of distinct punctures, the
scutellar moderately long, oblique; intervals not quite flat, similar
throughout. Length (cf) 6.0 mm.; width 2.4 mm. California
(southern), — Dunn pomona n. sp.

Punctures of the foveal region fine and sparse, generally only visible in
and near the inner fovea; elytral striae with excessively minute and
close-set though rather clear punctulation; body elongate-suboval,
moderately convex, black, polished, with very feeble greenish lustre,
the elytra (9 ) but little less shining; under surface black to rufes-
cent, the legs pale rufous; head not distinctly more and sometimes
less than half as wide as the prothorax, the eyes large but only mod-
erately convex, the strioles rather long, fine and oblique; antennae
slender, not very long, piceous, the three basal joints and some of
the fourth testaceous; prothorax nearly one-half wider than long, the
sides distinctly converging from the base and feebly arcuate, very

3O2 MEMOIRS ON THE COLEOPTERA

gradually slightly more arcuate and a little more converging ante-
riorly; apex two-thirds as wide as the base, rather deeply sinuate,
the prominent angles only narrowly obtuse at tip; basal angles right,
not rounded; impressions feeble to obsolescent, the stria very fine;
inner fovea broad and extremely shallow, with a short fine incised
linear part, the outer minute and punctiform to wholly obsolete;
elytra in outline and proportion nearly as in the preceding; lateral
series finer and more narrowly, less sharply interrupted; striae very
fine, coarser and close on the declivity, feebly impressed in the male,
the seventh very feeble, the scutellar rather long, fine, oblique; in-
tervals feebly convex (cf), flat ( 9 ) ; tarsi slender, blackish. Length
(cf 9 ) 57-6.3 mm.; width 2.2-2.7 mm- Rhode Island (Boston
Neck) and Long Island (Huntington and Wyandanch), — Schott.

humilis n. sp.

14 — Posterior thoracic puncture very much further*from the side than
from the base 15

Posterior puncture almost symmetrically placed in the basal angle, some-
times slightly further from the side than from the base, extremely
close to the tip of the angle in polita and allied species 20

15 — Antennae blackish, with the first three joints testaceous 16

Antennae similar but with only one or two basal joints testaceous; legs
always black throughout 17

1 6 — Form rather narrowly oblong-oval, convex, shining, the elytra a little
less so in the female, deep black, without metallic lustre; under sur-
face and legs black; head rather well developed, fully half as wide
as the prothorax and with but moderately convex eyes and simple
oblique strioles; antennae moderate in length; prothorax one-half (cf)
to three-fifths ( 9 ) wider than long, widest slightly before the base,
the sides broadly arcuate, gradually a little more so and converging
anteriorly, almost evenly and more moderately arcuate throughout
in the male; basal angles more than right and narrowly rounded, the
puncture coarse and deep, perforate; apex two-fifths to two-thirds
as wide as the base, deeply sinuate, with rather prominent angles;
base feebly sinuate toward each side; impressions obsolete, the stria
fine; foveae very feebly impressed, sometimes obsolete, excepting the
short incised line of the inner; elytra equal in width to the prothorax,
one-half longer than wide to somewhat less and gradually rounded
behind, the sides very feebly arcuate; lateral series widely spaced
medially; striae very fine, slightly coarser on the declivity, not defi-
nitely punctured, though sometimes extremely minutely comminuted,
the scutellar long, very fine; intervals flat in both sexes; anterior
tarsi broadly dilated in the male. Length (cT 9 ) 6.7-7.2 mm.;
width 2.8-3.0 mm. Colorado. Levette collection. Three speci-
mens tenax n. sp.

Form more broadly oblong-oval, larger in size, black, usually with de-
cidedly bright cupreo-aeneous lustre above; under surface when
mature black, the legs rufo-piceous, with black femora; head slightly
less than half as wide as the prothorax; thoracic sides converging
and feebly arcuate from base to apex, but little more so apically;
basal angles right and narrowly rounded, the puncture between two

AMARIN/E 303

and three times as far from side as base; apex barely two-thirds
as wide as the base, deeply sinuate, with very prominent though
more or less bluntly pointed angles; impressions very feeble, the
stria fine; fovese almost completely obsolete, excepting the short
incised line of the inner; elytra about equal in width to the pro-
thorax, gradually ogival behind the middle; lateral series remotely
spaced medially but not sharply interrupted; striae fine, sometimes
irregularly comminuted, with the seventh subobliterated, a little
coarser on the declivity, the scutellar moderate or long, fine; inter-
vals almost flat; anterior tarsi of the male moderately dilated.
Length (cf 9 ) 7.0-7.8 mm.; width 3.0-3.35 mm. North Carolina
(Southern Pines) to Illinois, Iowa (Keokuk) and Missouri (St.

Louis) cupreolata Putz.

17 — Basal thoracic angles rounded 18

Basal angles right, not rounded 19

1 8 — Form oblong-suboval, moderately convex, deep black, the upper
surface with rather bright bronze lustre; head about half as wide as
the prothorax; eyes moderately prominent, the strioles short, broadly
impressed; antennae slender, extending nearly to the thoracic base,
black, with the first joint dark rufous, the second piceous; prothorax
slightly over one-half wider than long, the sides very evenly and mod-
erately arcuate, becoming nearly parallel basally; apex nearly three-
fourths as wide as the base, distinctly and evenly sinuate, the angles
blunt at tip; impressions subobsolete, the stria not coarse but im-
pressed and very distinct; inner fovea marked by a short incised
line, the outer a small rounded feeble impression, remote from both
side and base; posterior puncture at the basal margin, twice its
diameter from the side; elytra scarcely distinctly wider than the
prothorax, nearly one-half longer than wide, very gradually rounded
from the middle; surface (9) somewhat shining though distinctly
micro-reticulate; striae very fine, especially toward the sides, where
they are minutely subcomminuted, but little coarser on the de-
clivity, the scutellar moderate, oblique; intervals flat. Length (9 )
7.0 mm.; width 3.0 mm. North Carolina (Southern Pines),—

Manee rustica n. sp.

Form more narrowly oblong-suboval, convex, shining, the elytra but
little less so in the female; color deep black throughout the upper
surface, -without trace of metallic lustre; head well developed, evi-
dently more than half as wide as the prothorax, the eyes moderately
prominent, the strioles extremely small and fine; antennae extending
about to the thoracic base, black, the basal joint rufous, clouded
with piceous above, the second piceous; rjrothorax fully one-half
wider than long, the sides broadly, not evenly, arcuate, more so an-
teriorly, subparallel and less so in about basal half; basal angles
right but well rounded; sides of the base broadly sinuate; posterior
puncture coarse and deep, twice as far from side as from base; apex
barely two-thirds as wide as the base, deeply sinuate, the angles
bluntly rounded at tip; impressions obsolete, the stria feebly im-
pressed, distinct; inner fovea broadly, feebly impressed, with a short
anterior incised line, the outer small, rounded, subobsolete; elytra

304 MEMOIRS ON THE COLEOPTERA

nearly one-half longer than wide, barely as wide as the prothorax,
more rapidly rounding in apical two-fifths, broadly ogival at tip;
striae fine but well impressed, minutely subcomminuted, the scu-
tellar short, oblique, deeply impressed; intervals broadly but evi-
dently convex. Length (9) 6.5 mm.; width 2.78 mm. Michigan
(Marquette), — Sherman marquettensis n. sp.

Form oblong-oval, slightly more abbreviated than in the preceding, deep
black, the upper surface bright polished bronzy-aeneous; head not
quite so large, barely half as wide as the prothorax, the eyes feebly
convex, the very small linear strides and the antennae throughout
nearly similar; prothorax rather more than one-half wider than long,
the sides more evenly arcuate, rounding in basally, the basal angles
more obtuse as well as rounded, the puncture not so coarse or deep,
the remainder nearly as in the preceding, except that the base is not
so evidently sinuate laterally; elytra shorter but otherwise nearly
similar in outline, barely as wide as the prothorax; striae finer, feebly
comminuted in part, the scutellar moderate, not so oblique, very fine,
not impressed and much disintegrated; intervals flat; middle tibiae
of the male serrate within, slightly bent. Length (cf) 6.2 mm.;
width 2.65 mm. Michigan (Marquette), — Sherman.

aeneopolita n. sp.

19 — Body oblong-suboval, rather broad, convex, black, the upper sur-
face more or less distinctly bronzed; legs piceous-black, the femora
blacker; head half as wide as the prothorax, the eyes rather feebly
convex, the strioles moderate, oblique; antennae rather short, not
extending to the thoracic base, black, the two basal joints rufous,
clouded above with blackish; prothorax one-half wider than long, the
sides broadly arcuate, more so and converging anteriorly, subparallel
basally, the basal angles right, slightly blunt because of a feeble
arcuation of the base outside of the broad feeble sinuses, the puncture
moderate, twice as far from side as from base; apex two-thirds as
wide as the base, deeply sinuate, the angles blunt at tip; impressions
very feeble; inner fovea obsolete,' excepting the short incised line,
the outer oblique but very feeble; elytra not quite one-half longer
than wide, about as wide as the prothorax, gradually rounding be-
hind; striae fine, minutely subpunctulate or comminuted, the scu-
tellar long, oblique; intervals flat or nearly so. Length (d71 9) 6.0
-7.0 mm.; width 2.8-3.1 mm. Nebraska. Four examples.

nebraskana n. sp.

Body nearly as in nebraskana but more elongate and smoother, bright
bronze above; legs black, with rufescent tibiae; head relatively a
little smaller, not quite half as wide as the prothorax, the eyes slightly
more convex; antennae similar in coloration but somewhat longer and
more slender, extending to the thoracic base; prothorax broader,
three-fifths wider than long, otherwise very nearly as in the preced-
ing; elytra longer, fully one-half longer than wide, similar in general
form and relationship, the lateral series more broadly interrupted,
although in this part of the section the interruption is not very con-
stant in extent; in the type of the present species there is a broad
sharp interruption on the left elytron, while a single puncture lies

AMARIN/E 305

at the middle of the equally wide interval on the right elytron;
striae nearly as in the preceding, the long scutellar more disintegrated,
the striae similarly but slightly coarser on the declivity; intervals
virtually flat; middle tibiae of the male a little longer and less bent.
Length (cf ) 7.3 mm.; width 3.1 mm. Colorado (Boulder Co.).

oblongula n sp.

20 — Antennae dark, with the three basal joints testaceous 21

Antennae similarly dark, with the first two joints at least in part testa-
ceous 30

21 — Posterior thoracic puncture larger, well separated from both side
and base; thoracic foveae generally feeble 22

Posterior puncture small and extremely close to the apex of the basal
angle; species small and usually aeneous; thoracic foveae both deep
and conspicuous, the outer oblique postero-laterally 26

22 — Head well developed, always fully half as wide as the prothorax
and sometimes wider 23

Head notably small, not or barely half as wide as the prothorax 24

23 — Form stout, oblong, rather convex, black, shining, the male with
very feeble bronzy lustre; micro-reticulation of the elytra strong in
both sexes, but rather finer and denser on the strongly alutaceous ;
elytra of the female; under surface and legs black; head notably
large, more than half as wide as the prothorax, the eyes moderately
convex, strioles short but coarse and deep; antennae long, extending
somewhat behind the thoracic base; prothorax one-half wider than
long, with the sides strongly rounding and converging anteriorly,
straighter and parallel posteriorly; basal angles right, the puncture
very coarse and deep, slightly nearer base than side; base broadly
sinuate laterally, arcuate near the angles; apex almost three-f®urths
as wide as the base, deeply sinuate, with prominent but bluntly
pointed angles; impressions subobsolete, the stria distinct; foveae
very feeble, the inner short, rectilinear, the outer very feeble, ob-
lique; elytra only two-fifths longer than wide, about as wide as the
prothorax, rapidly and obtusely ogival behind; lateral series widely
spaced but not interrupted medially; striae fine but sharp, impunc-
tate, only slightly coarser on the declivity, the scutellar long, ob-
lique, entire; intervals virtually flat, just visibly more than flat in
the male, not more convex apically. Length (cf 9 ) 9.0—10.0 mm.;
width 3.7-4.1 mm. California (San Francisco). Abundant.

conflata Lee.

Form less stout, oblong and much smaller in size, similarly deep black
throughout, the male highly polished and very feebly bronzed, the
female elytra alutaceous but less opaculate than in conflata; head
large, evidently more than half as wide as the prothorax, the eyes
rather convex; antennae a little shorter than in the preceding but
otherwise nearly similar; prothorax one-half or more wider than long,
the sides converging and broadly arcuate in about anterior half,
thence parallel and straighter to the base, the posterior puncture
very nearly at equal distance from side and base, the other features
nearly as in conflata; elytra almost one-half (cf), two-fifths (9),
T. L. Casey, Mem. Col. VIII, Oct. 1918.

306 MEMOIRS ON THE COLEOPTERA

longer than wide, equal in width to the prothorax, rather obtusely
rounded behind; striae strong and impressed (cf1), less coarse and un-
impressed (9), distinctly coarser on the declivity, the scutellar
moderate, oblique; intervals convex (cf ), especially toward the sides,
or flat ( 9 ). Length (cf 9 ) 7.6-8.5 mm. ; width 3.2-3.6 mm. Cal-
ifornia (near San Francisco). Four examples diffidens n. sp.

Form narrower than in conflata and smaller in size, elongate-suboval,
convex, deep black throughout and shining, the female elytra feebly
alutaceous; micro-reticulation of the male elytra almost obliterated;
head not so large as in the two preceding, but fully half as wide as
the prothorax, the eyes rather prominent; strioles coarse, deep and
oblique; antennae piceous, the two basal joints bright testaceous,
the third feebly clouded apically, moderate in length; prothorax
two-fifths to one-half wider than long, the sides differing from those
of the two preceding in being almost evenly and moderately arcuate
from base to apex, gradually subparallel basally, the posterior punc-
ture coarse, very slightly nearer base than side; apex and general
surface as in the preceding, the inner fovea a fine incised line, the
outer sublinear but feeble and postero-laterally oblique, sometimes
wholly obsolete; elytra fully one-half longer than wide, a little more
in the male, more gradually rounding behind, barely at all wider
than the prothorax; striae fine but sharp, coarse on the declivity,
the scutellar long, oblique; lateral series narrowly interrupted medi-
ally; intervals almost perfectly flat throughout in both sexes.
Length (cf 9 ) 8.0-8.7 mm.; width 3.3-3.6 mm. Idaho (Coeur
d'Alene), — Jas. A. Leyden leydeni n. sp.

24 — Scutellar stria very short, isolated; body small in size, with prom-
inent eyes. Black, with the upper surface polished, bronzy-aeneous;
tibiae and tarsi obscure rufous; head half as wide as the prothorax;
antennae moderate; prothorax barely two-fifths wider than long, the
sides very moderately, subevenly arcuate, becoming gradually sub-
parallel basally; apex two-thirds as wide as the base, deeply sinuate,
with very prominent, slightly blunt angles; basal angles right, nar-
rowly rounded, the puncture evidently nearer base than side; im-
pressions obsolete, the stria very fine; foveae completely obsolete;
base gradually strongly sinuate laterally; elytra not quite one-half
longer than wide, about as wide as the prothorax, gradually round-
ing at the sides behind the middle; lateral series abruptly and rather
widely interrupted; striae fine but sharp and deep, impunctate, a
little coarser behind, the seventh distinct; intervals feebly convex
in the male; under surface wholly punctureless as usual in this sec-
tion. Length (c?) 6.0 mm.; width 2.35 mm. Pennsylvania.

enervis n. sp.

Scutellar stria rather long, more or less oblique; body moderately large,
the eyes less prominent 25

25 — Body moderately stout, elongate-suboval, convex, obscurely bronzed
above, the under surface greenish-black; legs obscure rufous, the
femora black; head small, distinctly less than half as wide as the
prothorax, the eyes moderately convex, the posterior superciliary
puncture small, not half as large as the anterior; strioles fine and

AMARIN.E 3°7

deep; antennae slender, only feebly compressed, extending nearly to
the thoracic base, piceous, the three basal joints and some of the
fourth bright testaceous; prothorax not quite one-half wider than
long, the sides feebly arcuate and subparallel, gradually more round-
ing and converging anteriorly: apex two-thirds as wide as the base,
with prominent though bluntly pointed angles, deeply sinuate; base
only very feebly sinuate laterally, the angles right and but slightly
blunt, the puncture a little nearer base than side; impressions evi-
dent though feeble; foveae just traceable, the short incised dash of
the inner distinct; elytra about as wide as the prothorax, nearly
three-fifths longer than wide, the sides very gradually rounding
posteriorly; lateral series well spaced but not interrupted medially;
striae fine, impunctate, coarser behind, the seventh distinct, the scu-
tellar oblique, joining the second well behind the base and the first
near basal sixth; intervals perfectly flat; tarsi long and slender.
Length (cf) 8.0 mm.; width 3.35 mm. Colorado (Akron), — Shantz.

turbata n. sp.

Body more narrowly elongate-suboval, moderately convex, very bright
golden-aeneous above; under surface piceous, testaceous along the
middle; legs black, the tibiae rufous; head not quite half as wide as
the prothorax; eyes less convex than in the preceding or any other
species of our fauna, almost flattened, the superciliary punctures
subequal; strioles linear, feebly oblique; antennae very slender, only
slightly compressed, extending to the thoracic base, black, the three
basal joints and base of the fourth bright testaceous; prothorax
two-fifths wider than long, the sides subparallel, gradually strongly
rounding and converging before the middle; apex two-thirds as
wide as the base, deeply sinuate, with very prominent and only
slightly blunt angles; base rather rapidly posteriorly oblique toward
the sides, the angles right, scarcely at all blunt, the puncture about
equidistant from base and side; impressions obsolete, the stria very
fine but somewhat impressed; foveae completely obsolete, except
the short incised discal dash of the inner; elytra one-half longer than
wide, about equal in width to the prothorax, the sides very gradu-
ally rounding behind the middle, the subapical sinus small but dis-
tinct as usual; striae impunctate, rather strong and groove-like sutu-
rally, not coarser on the declivity, the seventh very fine and almost
obliterated, the scutellar long, feebly oblique and somewhat disin-
tegrated; intervals almost flat; sides of the metasternum and the met-
episterna with almost imperceptible punctulation. Length (cf1)
7.0 mm.; width 2.8 mm. Connecticut (New London). A single
example taken by the writer devincta n. sp.

26 — Prothorax longer, not over one-half wider than long. Body elongate-
suboval, convex, polished, feebly bronzed; under surface black, shin-
ing; tibiae and tarsi rufous, the femora piceous; head well developed,
with very prominent eyes, more than half as wide as the prothorax,
the strioles short and fine; antennae missing in the type; prothorax
with the sides barely arcuate and just visibly converging, gradually
more converging in about anterior half; apex nearly three-fourths
as wide as the base, moderately sinuate, with rounded angles; basal

308 MEMOIRS ON THE COLEOPTERA

angles right, sharp; basal transverse impression obsolete, the ante-
rior feeble and marked with short longitudinal strides ; stria very fine,
not impressed; foveae deeply impressed; surface wholly impunctate;
elytra nearly one-half longer than wide, about as wide as the pro-
thorax, the sides rather rapidly rounding behind; lateral series
widely and irregularly spaced but not definitely interrupted medi-
ally; striae fine, scarcely at all coarser apically, impunctate, the
seventh almost completely obliterated, the scutellar rather short,
fine, oblique, free at tip; intervals perfectly flat: middle tibiae (cf )
obtusely, angularly bent within at the middle. Length (cf) 6.0 mm.;
width 2.5 mm. New Mexico (Fort Wingate), — Shufeldt.

wingatei n. sp.

Prothorax short and transverse, three-fourths to four-fifths wider than
long ^ .27

27 — Elytra with the sides gradually rounding and obliquely converging
behind from before the middle. Body stout, convex, obscurely
bronzed above, moderately shining, the elytra ( 9 ) alutaceous, with
strong micro-reticulation; under surface piceous-black, shining; legs
dark and uniform rufous throughout; head barely half as wide as
the prothorax, with rather prominent eyes and short, very oblique
strioles; antennae short, not very slender, piceous, excepting the
three basal joints; prothorax three-fourths wider than long, the
sides broadly arcuate, straighter and parallel in about basal half;
apex three-fourths as wide as the base, evenly, rather deeply sinu-
ate, with bluntly rounded angles, the basal right; surface wholly
impunctate, the impressions subobsolete, the foveae deeply impressed,
the inner inclosing anteriorly the usual short incised line; elytra
two-fifths longer than wide, near the middle slightly wider than
the prothorax; apex narrowly but obtusely subprominent; lateral
series not interrupted; striae and flat intervals nearly as in the pre-
ceding. Length (9) 6.8-7.0 mm.; width 2.8-2.9 mm. Colorado
(Boulder Co.), — L. W. Casey oviformis n. sp.

Elytra with the sides rapidly rounding from distinctly behind the middle;
body less oval and more oblong 28

28 — Elytra near the middle slightly wider than the prothorax, very evi-
dently in the female but barely in the male. Body rather stout,
oblong-oval, narrower in the male, bright bronze to greenish-metallic
above; under surface greenish-black; legs obscure rufous, the femora
slightly piceous; head half as wide as the prothorax, with rather prom-
inent eyes and short, very oblique strioles; antennae notably short,
the joints obconic and feebly compressed, fusco-testaceous, the first
three joints paler; prothorax throughout nearly as in the preceding,
except that the median stria is coarser and impressed; surface appar-
ently never with a trace of the peculiar punctuation observable in
the following two species; elytra short, scarcely two-fifths longer
than wide; striae fine, not materially coarser behind, the seventh
subobliterated, the scutellar moderate, broadly free at tip as a rule;
intervals flat or very nearly; lateral series not interrupted. Length
(cf 9 ) 5.7-7.3 mm.; width 2.2-3.2 mm. Lake Superior (Marquette
and Duluth). Abundant convexa Lee.

AMARIISLE 309

Elytra about equal in width to the prothorax, the pronotum occasionally
with peculiar punctures apically and basally 29

29 — Color above bright aeneous, rarely metallic greenish or bluish, oblong-
oval, similarly convex; under surface black to piceous; legs black,
the tibiae obscure rufous; head rather distinctly more than half as
wide as the prothorax, otherwise nearly as in convexa throughout;
prothorax three-fourths wider than long, in outline nearly as in the
preceding but with relatively somewhat wider and less deeply sinu-
ate apex; surface usually completely impunctate, but occasionally
there are scattered punctures along the obsolete anterior impression
and in about two regular lines of similar punctures along the middle
of the feeble posterior impression, the lines parallel to the base,
somewhat as in the next species; elytra longer than in convexa, more
than two-fifths to about one-half longer than wide; striation nearly
as in' convexa, the seventh usually more distinct, but the sixth and
seventh are frequently finely comminuted, apparently as though
punctulate. Length (cf 9 ) 5.5-7.0 mm.; width 2.15-2.8 mm.
Colorado (Boulder Co.) and at Akron. Rather abundant.

polita Lee.

Color above black, with feeble violaceous lustre, the entire elytra rufo-
piceous, without metallic lustre; under surface piceous; legs rufous,
the femora picescent; tarsi rufous; form more broadly oblong than
in polita, only moderately convex; head half as wide as the prothorax,
the eyes well developed, rather prominent, the strioles short, linear,
very oblique; antennae slender, piceous, the three basal joints tes-
taceous, not extending to the thoracic base; prothorax more than
three-fourths wider than long, the arcuate sides straighter and par-
allel in about basal half; apex fully two-thirds as wide as the base,
the sinus moderate, the angles very broadly rounded; impressions
subobsolete, the anterior in the type with numerous coarse but shal-
low punctures, the posterior with two transverse straight series,
exactly parallel to the base, of similar but close-set punctures which
extend across the median parts from one inner fovea to the other;
foveae deeply impressed; elytra two-fifths longer than wide, about
equal in width to the prothorax, obtusely rounded behind, the lat-
eral series not interrupted; striae moderately fine, feebly impressed
suturally, not coarser behind, everywhere finely but obviously punc-
tulate, the seventh feebler and finer than the others, the scutellar
rather long, not free; intervals flat, feebly convex suturally; hind
tarsi very long and slender. Length (cf ) 6.4 mm.; width 2.8 mm.
New Mexico (Las Vegas). One example piceola n. sp.

30 — Sides of the prothorax very moderately and evenly arcuate from base
to apex, somewhat as in impuncticollis. Rather stout, oblong-oval,
convex, shining, the female elytra strongly micro-reticulate and dull;
upper surface with scarcely any metallic lustre; under surface and
legs throughout obscure rufous or piceous; head fully half as wide as
the prothorax, with rather feebly convex eyes and short oblique
strioles; antennae slender, feebly compressed, extending to the tho-
racic base, black, the two basal joints dark rufous, clouded with black-
ish above; prothorax one-half wider than long, to barely more (9 ),

310 MEMOIRS ON THE COLEOPTERA

the sides feebly converging from base to apex, the latter two-thirds
as wide as the base and deeply sinuate, the angles prominent and
but slightly blunt, the basal right, the puncture but little nearer
base than side; impressions obsolete, the stria very fine; foveae very
feeble and indefinite, the outer oblique when present, the short in-
cised dash of the inner evident; elytra barely visibly wider than the
prothorax, the sides rather rapidly and obtusely rounding behind;
lateral series not interrupted, although remotely spaced medially;
striae fine, impunctate, the two inner a little coarser behind, the
seventh feeble, the scutellar long, barely oblique, free at tip; inter-
vals flat or nearly so in both sexes. Length (cf 9 ) 8.0 mm.; width
3.5-3.7 mm. Wyoming impedita n. sp.

Sides of the prothorax more arcuate anteriorly than posteriorly, as usual
in the genus 31

31 — Body larger, stouter, oblong-oval and very convex, deep black, feebly
shining and without trace of metallic lustre, the elytra strongly micro-
reticulate and alutaceous in the female; under surface deep black,
the legs piceous, with blacker femora. Head fully half as wide as the
prothorax, the eyes only feebly convex, the strides subobsolete;
antennae extending to the thoracic base in the female, slender, only
feebly compressed, black, the first two joints obscure rufous, the
third piceo-rufous, the second and third strongly carinate; prothorax
three-fifths wider than long, the arcuate sides becoming straighter
but not parallel basally; apex nearly three-fourths as wide as the
base, moderately sinuate, with blunt angles, the basal right, the
puncture rather small, equally distant from base and side; impres-
sions very feeble, the stria fine and feeble; foveae broad and faintly
impressed, the incisure of the inner very short; elytra subequal in
width to the prothorax, evenly ogival in apical two-fifths, about
one-half longer than wide; striae very fine, coarser on the declivity,
the seventh still finer and feebly comminuted, the scutellar long,
free or not; intervals flat; tarsi long and slender. Length (9 ) 8.5
mm.; width 3.5 mm. Colorado (Boulder Co.) ebenina n. sp.

Body smaller, much less convex, the upper surface more polished and
usually with metallic lustre 32

32 — Elytral striae impunctate, the feebler seventh often comminuted, or
quasi-punctulate, however 33

Elytral striae minutely and feebly, always more or less irregularly punc-
tulate 34

33 — Strial intervals evidently convex, at least in the male. Body oblong-
suboval, moderately convex, highly polished and with bright sub-
cupreous lustre on the elytra, the sides of the latter and the anterior
parts more greenish-aeneous; under surface deep black, the legs
blackish-piceous throughout, the hind tarsi (d71) very long and slen-
der; head half as wide as the prothorax, with rather prominent eyes
and irregularly, subangularly impressed strides; antennae slender,
extending about to the thoracic base, black, the two basal joints
rufous, clouded above with piceous; prothorax less than one-half
wider than long, the sides becoming subparallel and less arcuate
basally; apex deeply sinuate, nearly three-fourths as wide as the

AMARIN.E 311

base, the prominent angles bluntly pointed; basal angles right, the
puncture barely nearer base than side; impressions feeble, the stria
fine; foveae indefinite and feeble, the incisure of the inner very short
and sometimes indistinct; elytra nearly one-half longer than -wide,
barely visibly wider than the prothorax, obtusely rounded in apical
third; striae moderate, distinctly impressed, especially inwardly, the
scutellar long, free at tip; lateral series not interrupted; intervals
more convex inwardly. Length (cf) 6.8 mm.; width 2.9 mm.
New Mexico (Jemez Springs), — Woodgate castalia n. sp.

Strial intervals flat or virtually so in both sexes. Body rather broad,
oblong-suboval, moderately convex, polished above, with more or
less evident bronzy lustre; under surface and legs black; head well
developed, very distinctly more than half as wide as the prothorax
as a rule, the eyes large, moderately convex; antennae slender, ex-
tending to the thoracic base, black, excepting the two basal joints;
prothorax two-thirds to three-fourths wider than long, the arcuate
sides becoming gradually parallel and nearly straight in about basal
half; apex three-fourths as wide as the base, deeply sinuate, the prom-
inent angles only very narrowly blunt; basal angles right, the punc-
ture but little nearer base than side; impressions obsolete, the stria
fine, entire or not; foveae feeble, the outer oblique, the lineate in-
cisure of the inner distinct; elytra nearly one-half longer than wide,
about as wide as the prothorax, obtusely rounded in about apical
third; striae fine, the scutellar very variable in length; lateral series
not or very narrowly interrupted; hind tarsi (d71) notably long.
Length (cf 9 ) 7.0-8.0 mm.; width 2.9-3.8 mm. Colorado (Boulder
Co.), Kansas and New Mexico (Fort Wingate). Thirteen specimens.

confusa Lee.

34 — Form oblong-suboval, distinctly bronzed above, the under surface
and legs black, the trochanters piceous; elytra rather feebly aluta-
ceous and distinctly micro-reticulate in the female; head smaller
than in confusa, barely half as wide as the prothorax; eyes only feebly
convex, the strioles minute or obsolete; antennae rather short, not
extending to the thoracic base in the female, moderately compressed,
not very slender, the joints somewhat obconic, deep black, the first
rufous, the second in great part piceous; prothorax not quite one-
half wider than long, the arcuate sides nearly straight but scarcely
parallel behind the middle; apex sinuate, three-fourths as wide as
the base, the angles broadly rounded; basal angles right, not rounded,
the puncture coarse, perforate, very slightly nearer base than side,
well separated from both; transverse impressions distinct, the stria
short, fine; foveae feebly impressed, the incisure of the inner distinct,
the outer lineiform and oblique; elytra fully one-half longer than
wide, about as wide as the prothorax, the sides gradually rounding
behind the middle; lateral series narrowly interrupted; striae fine,
not coarser behind, the scutellar long, free, disintegrated; intervals
just visibly convex and vestigially uneven. Length (9) 6.5 mm.;
width 2.8 mm. Colorado (Boulder Co.) subpunctata Lee.

From more narrowly elongate-oval and very bright cupreo-aeneous above,
the elytra highly polished and with feeble micro-reticulation in the

312 MEMOIRS ON THE COLEOPTERA

female; under surface and legs deep black, the stiff setae fulvous;
head not so small, fully half as wide as the prothorax; eyes much
more convex and prominent, the strioles normal, linear and oblique;
antennae almost similar, except that both the two basal joints are
in great part piceous; prothorax nearly similar but shorter, somewhat
more than one-half wider than long, the sides slightly diverging bas-
ally; apex similar; basal angles right, sharp, the puncture similar
in position but smaller; impressions and foveae nearly similar, the
former less pronounced; elytra even more gradually narrowed and
rounded behind, one-half longer than wide, at the middle just visi-
bly wider than the prothorax; striae nearly similar but still finer, the
lateral series interrupted medially; intervals virtually flat in gen-
eral plan but unevenly undulated; hind tarsi long and slender.
Length ( 9 ) 6.0-6.5 mm. ; width 2.6-2.7 mm. Lake Superior (Duluth
and Marquette) aeneolucens n. sp.

The species described by LeConte under the name difficilis—
afterwards suppressed — is truly a close relative of impuncticottis,
but seems distinct by reason of its larger size and broader outline.
Two allied species have also been confused under the name fallax;
the eastern form, or true fallax, is larger and stouter than hesperia;
it extends from the Atlantic seaboard, at least as far to the south
as North Carolina and westward to Colorado, while hesperia ex-
tends from the Pacific coast eastward as far as New Mexico. The
segregation of these two forms in large series demonstrates their
specific distinctness, but this might not be so evident in comparing
single specimens.

The division of Amara having simple male prosternum and with-
out an ocellate subscutellar puncture, is composed of far more
numerous species than that having the subscutellar puncture, and
they are more diversified in structure and coloration. I have found
the position of the posterior thoracic puncture a particularly valu-
able and easily observed taxonomic character in this division of
the genus — much more decisive than the carination of the second
or third antennal joint, which is often very difficult to determine.
The small aeneous species allied to polita, having this puncture
crowded into the extreme apex of the thoracic angle, have occa-
sionally a remarkable type of pronotal punctuation, as related under
that species and piceola. I cannot imagine what the eastern forms
placed under polita by Hayward can be, but they are not that spe-
cies in all probability; convexa Lee., is evidently different, but has
been sunk in synonymy under polita. A few species such as eras-

AMARIN^E 313

sispina, parviceps, ccelebs, brunnipes and protensa, as well as the
purely Alaskan littoralis, are unknown to me and have therefore
not been included in the above statement.

I am rather uncertain as to the correct position of ebenina in
the series; the two basal joints of the antennae are obscure rufous,
the third more piceous than rufous, but not black like the succeed-
ing joints, indicating perhaps an intermediate stage between those
species having two and those with three rufous basal joints. How-
ever, ebenina is so isolated in its very convex form and rather dull,
intensely black integuments, that it should be recognized easily;
it does not agree with the description of protensa as given by Put-
zeys. The species described above under the name castalia, is
peculiarly brilliant in coloration. I have only a single specimen
that can reasonably be assigned to subpunctata Lee., and it has never
been compared directly with the type; the punctures are very min-
ute, as they are also in ceneolucens, but on the more polished surface
of the latter, the strial intervals have a peculiarly crumpled or sub-
nodular aspect; subpunctata is broader, more oblong and less oval
than ceneoktcens, if I have identified it correctly as seems probable.

In some species, such as turbata and piceola, the posterior super-
ciliary puncture becomes very small when compared with the an-
terior; it is easy to conceive that it occasionally may become ves-
tigial, and this may be the condition in those European species of
the subfamily which are said to have but one supraorbital seta,
although, according to Hayward (1. c., p. 15), it is the anterior
puncture that is wanting; he also refers to one species which is
said to lack both setae. I think that in these instances closer obser-
vation would possibly reveal at least traces of the missing puncture,
and the case is probably not exactly like that observed in Micra-
topus fusciceps, and presumably also in the closely allied Blemus
cenescens Lee., referred to on p. 3 of the present work.

Triaena Lee.

While closely allied to Amara, as shown by general characters,
such as outline of the prothorax, antennal coloration, prosternal
structure of the male and pubescent hind tibiae in that sex, as well
as the presence of a single puncture at each side of the abdominal
apex in the male and two in the female, I am disposed to consider

314 MEMOIRS ON THE COLEOPTERA

Tricena a valid genus, related to Amara in much the same way that
Triplectrus is to Anisodactylus . The trifid anterior tibial spur at
least is a purely non-sexual feature, which can be said of but very
few of the taxonomic characters serving for generic definition in the
Amarinae. The lateral series of ocellate elytral punctures is always
more or less interrupted medially.

The species in my collection may be known as follows:

Elytra \vith a subscutellar ocellate puncture 2

Elytra completely devoid of the ocellate puncture; antennae black, with

three basal joints and base of the fourth testaceous 7

2 — Antennae with the first four joints pale testaceous, the fourth often
feebly infumate, however, except basally. Body oblong-suboval,
strongly convex, polished throughout in both sexes, aeneous to viridi-
aeneous above, black beneath; legs bright rufous, the tarsi infuscate;
head but little more than half as wide as the prothorax, with large
and moderately prominent eyes, the antennae slender, piceous ex-
cept basally; prothorax widest at base, two-fifths wider than long,
the sides feebly arcuate, more rounded apically; apex scarcely two-
thirds as wide as the base, sinuate, with well defined and narrowly
blunt angles; anterior impression obsolete, the posterior often dis-
tinct; inner fovea with a few fine punctures, large, broadly impressed,
the incised part distinct, the outer obsolete; posterior puncture
nearer base than side; elytra not quite one-half longer than wide,
equal in width to the prothorax, the sides gradually arcuate and con-
verging behind the middle; striae rather fine but deep, impunctate,
the lateral fine and superficial, the scutellar moderate; intervals con-
vex, except laterally: anterior tarsi of the male rather feebly dilated.
Length (d71 9 ) 5.6-6.9 mm.; width 2.2-2.8 mm. Lake Superior to
Rhode Island, District of Columbia and Virginia (Norfolk). Abun-
dant pallipes Kirby

Antennae blackish, the three basal joints and base of the fourth testa-
ceous 3

3 — Femora very pale testaceous 4

Femora black or piceous-black 6

4 — Legs rufous, the tibiae feebly infumate distally, the tarsi black; pro-
thorax just visibly wider at about the middle than at base. Body
oblong-elongate, moderately convex, polished, the elytra somewhat
alutaceous in the female; under surface black, the epipleura rufes-
cent; metasternum and side-pieces virtually impunctate; head nearly
three-fifths as wide as the prothorax, with large and moderately
prominent eyes; antennae (9) rather thick, extending fully to the
thoracic base; prothorax two-fifths wider than long, the sides arcu-
ate throughout, more so and slightly converging apically; apex three-
fourths as wide as the base, very moderately sinuate, with rounded
angles; basal angles right, sharp, the puncture small and at the tip;
base broadly sinuate laterally; impressions obsolete; foveal region
not evidently punctate, the inner fovea large, broadly impressed,

AMARIN/E 315

i

the incised line short and deep, the outer oblique, linear, distinct
and attaining the basal margin; elytra fully one-half longer than
wide, ogivally rounded in about apical third, slightly wider than the
prothorax; striae fine, not deep, minutely, closely punctulate, the
inner feebly impressed, the scutellar long, not free; intervals flat,
almost so internally. Length (9) 6.8 mm.; width 2.8 mm. Lake
Superior (Marquette), — John D. Sherman, Jr shermani n. sp.

Legs rufous, the tarsi alone piceous; prothorax of the usual form, widest
at base. Body notably elongate, rather convex, black, without evi-
dent metallic lustre, polished, the elytra (9 ) very slightly less shin-
ing: epipleura pallescent; metasternum and side-pieces variably
punctate; head well developed, fully three-fifths as wide as the pro-
thorax, the eyes large and prominent; antennae rather long and slen-
der; prothorax two-fifths wider than long, the sides broadly arcuate
and anteriorly converging, nearly straight and subparallel behind
the middle; apex feebly sinuate, with well marked and but slightly
blunt angles; basal angles right, the puncture symmetrically placed;
impressions variably evident; foveal region with fine scattered punc-
tures, sometimes virtually impunctate, the foveae very feeble, the
incised discal line of the inner evident, the outer obsolete; elytra
one-half longer than wide, the sides arcuate, the apex gradually
ogival, at the middle, distinctly (9 ), or slightly (cf ), wider than the
prothorax; subapical sinus pronounced; striae not very fine, groove-
like, very finely, closely punctulate as a rule, the scutellar moder-
ately long, broadly free at tip; intervals nearly flat in both sexes;
seventh stria very feeble. Male distinctly smaller than the female.
Length (cf 9 ) 6.3-7.8 mm.; width 2.3-3.0 mm. California (Sta.
Cruz to Humboldt Co.) longula Lee.

Legs pale rufous throughout, the tarsi not darker, except at the extreme
tips of the joints; prothorax of the usual form, widest at base 5

5 — Body oblong-suboval, convex, highly polished throughout in both
sexes, aeneous or in part viridi-aeneous above, black beneath; head
small, barely half as wide as the prothorax, with large and rather
prominent eyes; antennae long, extending well behind the thoracic
base in both sexes; prothorax one-half to three-fifths wider than long,
with the sides strongly arcuate and converging anteriorly, becoming
gradually parallel basally; apex barely two-thirds as wide as the
base, rather feebly sinuate and with moderately blunt angles; basal
angles right, slightly blunt, the puncture coarse, distant from base
and side, nearer the former; base distinctly sinuate at each side;
surface somewhat strigose transversely toward the fine median stria,
the posterior impression often evident; foveal region with scattered
punctures; inner fovea deep, lineiform, distant from the base, the
outer small, rounded, subobsolete and discal; elytra very nearly
one-half longer than wide, regularly ogival in apical two-fifths, equal
in width to the prothorax; striae rather strong, groove-like, generally
impunctate, the scutellar very short, free; intervals evidently con-
vex; anterior tarsi (cf ) more strongly dilated than in pallipes.
Length (c? 9 ) 5.8-6.5 mm.; width 2.45-2.7 mm. New York. Five
examples. [Amara indistincta Hald.] angustata Say

316 MEMOIRS ON THE COLEOPTERA

Body oblong-oval, smaller and much more abbreviated than angustata
and with small head, convex, highly polished above in both sexes
and viridi-subseneous, black beneath, the metasternum impunctate;
head barely half as wide as the prothorax, the eyes well developed
but only moderately prominent; antennae nearly half as long as the
body in the female; prothorax very nearly one-half wider than long,
the sides subparallel, feebly arcuate, more so and arcuately converg-
ing anteriorly more apically than in angustata; apex and base as in
that species; foveae in general subsimilar but still less definite; elytra
much shorter, only a third longer than wide, more rapidly ogivally
rounded apically, about as wide as the prothorax; striae even more
coarsely impressed, the scutellar longer, less free, the seventh more
distinct; intervals convex; hind tarsi subsimilar, slender, the ex-
treme apex of each joint similarly blackish. Length (9 ) 5-3 mm.;
width 2.35 mm. Lake Superior (Marquette), — Sherman.

flebilis n. sp.

6 — Elytra similarly striate and shining in both sexes. Body stouter
than in longula, oblong-oval, convex, deep black, the upper surface
with, to completely without, bronze lustre, the elytra scarcely at
all less polished in the female; legs black, the tibiae and tarsi rufo-
piceous; head moderate though evidently somewhat over half as
wide as the prothorax, the eyes well developed, separated from the
front by an acute deep groove; antennae rather thick, extending to
the thoracic base; prothorax large, two-fifths wider than long, the
sides strongly rounding anteriorly, subparallel and nearly straight
in rather more than basal half; apex feebly sinuate, with bluntly
rounded angles, the basal right, the puncture rather small, sym-
metrically placed; impressions very feeble; surface smooth; foveal
region punctureless or with very few small scattered punctures;
inner fovea feeble, the incised line very short, the outer very feeble,
short, oblique; elytra nearly one-half longer than wide, gradually
ogival behind the middle, not or very slightly wider than the pro-
thorax in either sex; striae moderately fine, sharp, minutely sub-
punctulate as a rule, the scutellar moderate, somewhat disintegrated;
intervals just visibly convex; anterior tarsi (cf) rather strongly
dilated. Length (cf 9 ) 6.5-7.7 mm.; width 2.8-3.2 mm. Cali-
fornia (San Francisco to Siskiyou and Humboldt Cos.). Rather
abundant, the male less so than the female scitula Zimm.

Elytra less shining and with finer striae and flat intervals in the female.
Body similarly stout and convex, oblong-suboval, strongly convex,
deep black, the male with scarcely visible bronzy lustre; under sur-
face greenish-black; legs as in the preceding; head half as wide as
the prothorax, or (cf ) a little more, the eyes not quite so large or
prominent as in scitula, the groove at their base less marked; anten-
nae nearly similar; prothorax large, two-fifths wider than long, the
sides rounded and converging anteriorly, slightly diverging and very
feebly arcuate thence to the base, the angles and basal puncture as
in the preceding; apex two-thirds as wide as the base, distinctly
sinuate, with rather bluntly-pointed angles; impressions very feeble;
foveal regions impunctate or nearly so, the inner fovea feeble, the

AMARIN.E 31?

deep short incisure evident, the outer very feeble, rounded or sub-
oblique; elytra one-half longer than wide, equal in width to the pro-
thorax, very gradually rounded behind the middle, the subapical
sinus distinct; striae not definitely punctulate, moderate and1 im-
pressed (cf ), or very fine and unimpressed (9 ), the scutellar long,
entire or interrupted, the seventh extremely fine and feeble; inter-
vals rather conspicuously convex (cf ), or perfectly flat ( 9 ) ; anterior
tarsi moderately dilated in the male, the abdominal segments each
with a small rounded discal impression near each side, especially in
the male. Length (cf 9 ) 6.3-7.2 mm.; width 2.7-3.0 mm. Utah
(Provo), — Wickham uinta n. sp.

7 — Form and size somewhat as in longula, black, with bronze lustre,
shining, the elytra feebly alutaceous in the female, elongate-suboval,
convex; under surface black, the legs obscure rufous; head distinctly
more than half as wide as the prothorax, the eyes large and rather
prominent, nearly as in scitula; antennae extending slightly behind
the thoracic base; prothorax relatively not large, the sides strongly
rounding anteriorly, subparallel and nearly straight in more than
basal half; apex feebly sinuate, with short blunt angles, the basal
angles somewhat acute, the puncture near the tip of the angle; im-
pressions very feeble, the foveal region with small sparse punctures;
inner fovea long, feebly impressed, its anterior part deep, the outer
very feeble, oblique; elytra one-half longer than wide, at the middle
of the distinctly arcuate sides nearly a fifth wider than the pro-
thorax — probably much less in the male type, the sides very gradu-
ally rounding behind; striae rather deep and impunctate internally,
more shallow and minutely, closely punctulate externally, the scu-
tellar long; intervals nearly flat throughout. Length (9) 7.7-8.0
mm.; width 3.1-3.2 mm. California (San Francisco Bay). Three
examples afoveolata Hayw.

Form less elongate, much smaller in size, more convex, polished, greenish-
black, the elytra scarcely less shining in the female; under surface
greenish-black; femora black, with feeble metallic lustre, the tibiae
and tarsi piceo-rufous; head smaller, though sensibly more than half
as wide as the prothorax, the eyes nearly as in the preceding; an-
tennae extending nearly to the thoracic base but with shorter joints,
especially toward tip; prothorax shorter, one-half wider than long,
otherwise somewhat similar in outline, the hind angles right, the
puncture near the tip; apex feebly sinuate with blunt angles; posterior
transverse impression distinct, the anterior obsolete; foveal region
impunctate, the foveae also wholly obsolete, except the short deep
discal line of the inner, the outer sometimes represented by a small
feeble point; elytra one-half longer than wide, only very slightly
wider than the prothorax, the arcuate sides gradually rounding be-
hind; striae rather fine, impunctate, the inner deep and abrupt, the
scutellar moderate, disintegrated; intervals feebly but sensibly con-
vex internally. Length (9) 6.3 mm.; width 2.5 mm. Utah
(Provo), — Wickham vapida n. sp.

Form oblong-suboval, convex, shining, black, with greenish lustre, the
elytra rather densely alutaceous in the female ; under surface black, not

3i8 MEMOIRS ON THE COLEOPTERA

metallic; legs obscure rufous, the femora still somewhat more obscure;
head but little more than half as wide as the prothorax, the eyes
not so large as in the two preceding and only moderately prominent;
antennae stouter, extending barely to the thoracic base; prothorax
large, barely two-fifths wider than long, the sides parallel and nearly
straight, rapidly rounding before the middle; basal angles right;
apex more than two-thirds as wide as the base, very feebly sinuate,
almost truncate, the angles broadly blunt; impressions obsolete;
foveal region virtually impunctate, the inner fovea long, feebly im-
pressed, its anterior part deeper, the outer fovea small, subobsolete;
elytra slightly less than one-half longer than wide, just visibly wider
than the prothorax, more rapidly and obtusely rounded behind than
in the two preceding; stria? rather fine but sharply defined, minutely
punctulate, the scutellar oblique, not free, joining the second well
behind the base; intervals flat. Length (?) 6.7 mm.; width 3.0
mm. Arizona (locality unrecorded) profuga n. sp.

Besides afoveolata* there are two other species without the ocel-
late subscutellar puncture, as shown above. The species described
by Horn under the name belfragei, is very distinct in its entirely
pale antennae; it is from Texas and I have seen no representative,
but the radically different antennae may betoken other striking dif-
ferential characters. The value of the presence or absence of the
ocellate subscutellar puncture is assumed to be primary, as in the
second group of Amara, but in one example of scitula at hand, there
is a full development of this puncture on the right elytron, but no
vestige of it on the left.

The species described as depressa by LeConte (Ann. Lye., N. Y.,
1848, p. 365) is not mentioned by Horn in his short revision of
Tricena, but Hayward places it as a synonym of pallipes. This is
highly improbable, because of its less pronounced convexity and
other reasons. I should have been disposed to identify shermani
as depressa, in spite of several important incongruities, were it not
for the fact that the seventh elytral stria is said to have five posterior
punctures in the latter; there are only two feeble subpunctiform
subapical enlargements of the seventh stria in shermani. If the
type of depressa be still in existence, it should be restudied, for it is
a distinct species, apparently without doubt — possibly, however, a
small Triplectrus; this possibility is at least surmisable from the
description.

* It is unfortunate that the author was not able to alter this name to harmonize with
philologic principles; its present form, as a combination of Greek and Latin, cannot be
approved, and yet there is no way to change it under accepted rules.

PTEROSTICHIISLE 319

Subfamily PTEROSTICHIN^E

This is one of the largest of the Carabid subfamilies, and so far
as generic subdivision is concerned, perhaps the most difficult. In
the definition of genera, more consideration should be given to gen-
eral habitus than to many of those modifications of special organs
constituting the so-called structural characters considered essential
by many authors. There are some of these structural modifica-
tions of special organs, such as the very singular hind tarsi of Ham-
matomerus, the simply rounded mental tooth of Piesmus, as re-
corded by LeConte, and the numerous broadly impressed elytral
fovese of Bothriopterus, which, though unaccompanied by habital
differences of marked degree, would nevertheless seem to indicate
of themselves distinct genera, but as a rule restricted structural
characters are not so decisive as marked difference of habitus,
which for instance, forms the chief point of distinction between
Holciophorus and Hypherpes. One could not hesitate at all in de-
ciding that Holciophorus is a different genus from Hypherpes at a
mere glance. In the vigorous search for special structural charac-
ters to supplement obvious habital differences, many misconcep-
tions have occurred and modifications of really slight importance
used in the separation of groups remarkably similar in general ap-
pearance, such for instance as the presence or absence of external
striation on the tarsal joints. LeConte separates Evarthrus because
of the broader and widely truncate fourth palpal joint being shorter
than the third, overlooking the fact that this is almost the identical
structure of the palpi in the widely different Holciophorus and occurs
to some extent in several other groups as well as Evarthrus. In
fact the subfamily Pterostichinse constitutes one of those composite
aggregates, wherein the division into surnamed units for taxonomic
convenience should be founded more upon sense of proportion than
upon differences of structure in special organs.

In applying definite tangible structural peculiarities to the def-
inition of generic groups, a few observations seem appropriate.
First, the form of the basal angles of the prothorax is not decisive
in the limitation of genera; there are four or five groups to be re-
called at present where the form of these angles varies from acutely

320 MEMOIRS ON THE COLEOPTERA

prominent to broadly rounded as in Leptoferonia, Euferonia, Gas-
trosticta, Ferestria and others. Again the basal thoracic foveae may
be double or single in the same group, as in Hypherpes and Euferonia.
Then also what might appear to be a most important character in
estimating genera, that is the number of discal elytral punctures,
though in general a rather constant criterion, occasionally becomes
unreliable, as for instance in Euferonia, where though normally two
in number, there may happen accidentally to be three on one or
both elytra, as was a puzzling fact to LeConte in comparing the
type of relicta Newm., having three punctures, with his protensa,
having but the normal two. The punctures in Cryobius are still
more variable, though never single or altogether wanting. So, to
repeat, in differentiating genera in this subfamily and fixing their
boundaries, a broad conception of general appearance pervading
the species is, as a rule, more useful as a criterion than the modifi-
cations of special organs. I have endeavored to apply this prin-
ciple in some parts of the following table of our supposably generic
groups :

Anterior tarsi with the dilated joints regular in the male 2

Anterior tarsi with the joints obliquely dilated in the male 25

2 — Met-episterna notably short, never decidedly longer, and generally

much shorter, than wide 3

Met-episterna always decidedly elongate 17

3 — Elytra without dorsal puncture 4

Elytra each with one to five or six dorsal punctures 8

4 — Body short, stout, oblong and convex; head small, the eyes very prom-
inent; maxillary palpi with broad and truncate terminal joint, that
of the labial broad and securiform; prothorax with irregular duplex
basal foveae, but little narrowed at base, with sharp angles and di-
versified side margins; elytral striae very deep, the scutellar short.

Atlantic Regions. [Type Abax chalybeus Palli.] Myas Dej.

Body elongate, sometimes much depressed 5

5 — Hind and middle tarsi with the joints pedicellate; head very large,
tumid behind the eyes; elytral striae moderate, the scutellar very
short and feeble; body rather large, resembling a narrow Hokio-
phorus. Pacific coast. [Type H. morionides Chd.]

Hammatomerus Chd.

Hind tarsi normal, the joints obtriangular 6

6 — Thoracic sides coarsely margined; body very large, the head large,
swollen behind the eyes; prothorax subcordiform, with notably
prominent anterior, and well defined posterior, angles; elytral striae
fine, punctulate, the scutellar short. Pacific coast fauna. [Type

Feronia atra Dej.] Holciophorus Lee.

Thoracic sides more or less finely margined, the anterior angles never
more than moderately prominent 7

PTEROSTICHIN^: 321

7 — Head very large, tumid behind the eyes, which are not prominent;
body elongate and subcylindric, shining, the elytral striae regular,
rather deep, the scutellar usually well developed; abdomen impressed
at apex in the male. Atlantic regions. [Type Pt. rostratus Newm.]

Cylindrocharis nov.

Head moderate to rather large, never very small and always with prom-
inent eyes, seldom with any pronounced tumidity behind the eyes,
this being evident however in such forms as tarsalis and liercnlaneus;
palpi slender; body never very small or subcylindric, though parallel
and flattened in many species; elytral striae fine to deep, regular;
lustre shining, sometimes opaque as in menetriesi; abdomen not
apically modified in the male, except in custaneus. Species extremely
abundant west of the Rocky Mountains, very few in number in
the Atlantic regions. [Type Feronia valida Dej.] Pterostichus Auct.
Amer Hypherpes Chd.

Head rather small and elongate, the eyes scarcely prominent, the palpi
slender; body small, parallel or subcylindric; elytral striae deep,
regular, complete and usually impunctate; abdomen not modified
at tip in the male. Pacific coast. [Type Per. angusta Dej.]

Leptoferonia nov.

8 — Elytra very constantly with a single dorsal puncture, excepting in an
aberrant section of Eumolops, having subopaque integuments, where
there are three small punctures on each elytron 9

Elytra with two dorsal punctures, sometimes accidentally with three on
one or both elytra; body elongate, neither parallel nor notably ven-
tricose, shining in both sexes; elytral striae complete, deep, the scu-
tellar well developed 15

Elytra with three dorsal punctures, four in Refonia and variable in Cry-
obius; genera rather widely isolated among themselves 16

9 — Elytral striae complete and well developed or at least evident through-
out 10

Elytral striae in great part obliterated 14

10 — Prothorax constricted basally, the basal angles generally well de-
fined n

Prothorax with the sides oblique basally, sometimes feebly and briefly
sinuate, the angles usually obtuse; scutellar stria obsolete 13

II — Head small; body small, ventricose; antennae and tarsi very slender;
abdomen not apically modified in the male. Atlantic regions.
[Type Per. honesta Say] Gastrellarius nov.

Head well developed; body larger in size, sometimes very large; antennae
usually more or less thick 12

12 — Maxillary palpi slender, with the third and fourth joints subequal in
length, the fourth a little wider than the third and truncate; anten- .
nae filiform; body rather small in size, shining, rarely dull in the
female; thoracic base always narrower than the apex, the anterior
angles not deflexed and the foveae always bistriate; elytral striae
with true but small and often indistinct punctures. Atlantic regions
to southern Rocky Mountains. [Type Per. constricta Say]

Anaferonia nov.
T. L. Casey, Mem. Col. VIII, Oct. 1918.

322 MEMOIRS ON THE COLEOPTERA

Maxillary palpi slender, the fourth joint longer but not wider than the
third and not truncate; antennae filiform; body moderate to rather
large in size, opaculate or feebly shining; basal thoracic constriction
feeble, the anterior angles not deflexed, the foveae single; elytral
striae with true and distinct punctures. Southern Atlantic regions.
[Type assumed C. roticollis nov.] Cyclotrachelus Chd.

Maxillary palpi stout, the fourth joint shorter than the third and trun-
cate; antennae thick basally; body very large, the head large; ante-
rior thoracic angles deflexed, the base deeply constricted, the foveae
irregularly bistriate; elytral striae almost obsolete and without true
punctures, the scutellar stria wanting; tooth of mentum rather small,
deeply emarginate at apex, with acute lobes. Texas. [Type M.
gigas nov.] Megasteropus nov.

Maxillary palpi rather slender, the last joint slightly to much shorter
than the third, and never notably wider, fusiform, never more than
narrowly truncate; body moderately large, often very stout, with only
moderately large head and shorter mandibles, which, as usual in
this section, are coarsely strigose; anterior thoracic angles not de-
flexed, the constricted base wider to much narrower than the apex,
the foveae always bistriate; elytral striae with true and distinct punc-
tures; mentum tooth as in the preceding but relatively still smaller.
Atlantic to Sonoran regions. [Type E. sexualis nov.]

Eumolops nov.

13 — Body larger, usually opaque or with the anterior parts slightly more
shining in both sexes, the palpi nearly as in the preceding genus;
thoracic foveae large, bistriate; elytral striae moderate, distinct, al-
ways distinctly punctured; abdomen not modified at tip in the male.
Atlantic to Sonoran regions. [Type Per. sigillata Say]

Evarthrus Lee.

Body smaller and more slender, the integuments shining, the elytral
striae deep, impunctate as a rule; maxillary palpi slender, the fourth
joint as long as the third or longer; thoracic foveae single, linear;
last ventral segment strongly modified in the male by impression or
tuberculation. Atlantic regions. [Type Evarthrus mancus Lee.]

Monoferonia nov.

14 — Body small and ventricose, the head well developed; basal thoracic
angles obtuse, sometimes with a minute acute prominence at the
setigerous puncture, the foveae single, short, deep and oval. Atlantic
regions. [Type Pt. Icei'ipennis Lee.] Ferestria Leng

15 — Prothorax finely margined at the sides; body small and more slender;
pronotal foveae single, long and linear; elytral striation normal. At-
lantic regions. [Type Pt. palmi Schf.] Feronina nov.

Prothorax coarsely margined at the sides; body larger, more convex and
less slender, always strongly shining in both sexes, the elytral striae
complete and very deep, the dorsal punctures somewhat variable
though normally two in number; thoracic angles obtuse, the foveae
large, generally duplex; the angles are however sharply marked and
the foveae single in lachrymosa; abdomen not modified apically in
the male. Atlantic regions. [Type Fer. stygica Say]

Euferonia nov.

PTEROSTICHIN.E 323

Prothorax coarsely margined but not so evenly as in Euferonia, the re-
flexure gradually broad and obsolescent posteriorly, the hind angles
obtuse; body resembling Euferonia in general appearance, though
less convex, differing much in having the elytral striae unevenly
broken throughout and the apex more obtuse; it differs further in
having pronounced male modification of the abdominal apex; dorsal
foveae traceable in the confused sculpture only by the attendant
setae, which are apparently two or three in number. Atlantic boreal
regions. [Type Pt. punctatissimus Rand.] Lyperopherus Mots.

16 — Habitus strongly suggesting Euferonia, the body shorter, broader,
less convex, with opaque lustre and with more oblique sides of the
prothorax, the angles and foveae nearly similar and the sides simi-
larly coarsely margined; head larger, the palpi normal; striae deep,
impunctate, the scutellar rather well developed; dorsal punctures
four. Atlantic regions. [Type Per. mcesta Say] Refonia nov.

Habitus recalling Myas but much flatter, with the prothorax not narrowed
at base, the foveae large, deep and irregularly duplex, the thoracic
sides coarsely margined, palpi slender; integuments polished through-
out, the striae deep, the scutellar deep but only moderately long; pro-
sternal process margined or not. Atlantic regions. [Type Per.
permunda Say] Abacidus Lee.

Habitus nearly as in Ferestria; body small, ventricose to subparallel; pro-
thorax finely margined at the sides, which are oblique posteriorly,
the angles obtuse or minutely and acutely prominent, the foveae
single; elytral striae deep and punctured, more or less obliterated at
the sides and tip; abdomen with conspicuous coarse punctures ex-
cept axially. Atlantic regions. [Type Per. ventralis Say]

Gastrosticta nov.

Habitus somewhat as in the more minute exponents of Argutor; body
alwavs notably small in size, including some of the smallest of the
subfamily, elongate, moderately convex; palpi slender, the antennae
rather thick; prothorax finely margined at the sides, sinuate before
the sharp basal angles, the foveae single or double; striae not deep as
a rule, feebler externally, the scutellar imperfect; dorsal punctures
becoming variable, two to five or six in number. Species numerous
in the far north, especially in the Pacific districts of both hemi-
spheres. [Assumed type Pt. hudsonicus Lee.] Cryobius Chd.

Habitus in some respects as in Piesmus, apterous, small in size; prothorax
trapezoidal, finely margined, the foveae single, linear; seventh ely-
tral stria subobsolete anteriorly, deep posteriorly; body rather de-
pressed. Male with the abdomen impressed and tuberculate at apex.
Atlantic regions. [Type Pt. lubricus Lee.] Paraferonia nov.

17 — Dorsal punctures of the elytra two in number; body subparallel, the
integuments highly polished; head moderate, the palpi normally
slender; prothorax coarsely margined at the sides, which are oblique
posteriorly, the angles obtuse, the foveae single; elytral striae very
coarse, deep and strongly punctured. Atlantic regions. [Type Per.
submarginata Say] Piesmus Lee.

Dorsal punctures three, small as usual 18

324 MEMOIRS ON THE COLEOPTERA

Dorsal punctures five, rarely six, impressed and larger than in any other
group of the subfamily 24

18 — Antennae with the subbasal joints carinate; integuments usually pol-
ished and almost always metallic in coloration; head very moderate,
the slender palpi with the last joint fusiform and rather pointed;
thoracic foveae two in number, sometimes variable; elytral striae
generally rather fine, the scutellar long. Atlantic and Pacific re-
gions. [Assumed American type Per. chalcites Say (sayi Brul.)]

Poecilus Bon.

Antennae with the subbasal joints not carinate; integuments usually pol-
ished, only very seldom with metallic lustre of any kind 19

19 — Prothorax coarsely margined at the sides; body parallel and subde-
pressed, moderate to large in size; head large, the palpi slender, oc-
casionally with the fourth joint much shorter than the third, in
which section, also, the usually polished elytra become dull; tho-
racic angles sharply marked, the foveae duplex; striae moderate, gen-
erally feebler externally and posteriorly, the scutellar very long.
Atlantic regions. [Type Per. tartarica Say] Lophoglossus Lee.

Prothorax more or less finely margined at the sides 20

20 — Thoracic foveae duplex; head well developed, with prominent eyes
and slender palpi; prothorax more or less constricted at base, except
in luctuosus; hind angles always sharply marked; elytral striation
somewhat as in Lophoglossns; scutellar stria usually long; hind tibiae
normal in the male. Atlantic regions and Europe. [Assumed
American type Per. ebenina Dej.] Omaseus Dej.

Thoracic foveae single, linear, impressed; hind angles never carinate. . 21

21 — Posterior tibiae pubescent within in the male; prothorax orbicular,
never constricted at base, the angles obtuse, sometimes with a
minute acute prominence as in mutus; head only moderate in size;
elytral striae deep, never punctate, the scutellar long. Atlantic
regions. [Type Per. muta Say] Dysidius Chd.

Posterior tibiae not more pubescent in the male 22

22 — Head moderately developed as in Dysidius; thoracic sides more or
less sinuate basally, the angles sharp, the fovea long; elytral striae
not punctate, the scutellar long. Pacific coast regions. [Type
Per. lustrans Lee.] Parargutor nov.

Head notably small ; body very small in size 23

23 — Prothorax flattened and deplanate toward the broadly rounded basal
angles; elytral striae impunctate, the scutellar completely wanting,
the ocellate puncture distinct however as usual. Atlantic regions.
[Type Per. erythropns Dej.] Pseudargutor nov.

Prothorax not flattened or explanate at the sides, the basal angles sharp
and distinct; striae punctured as a rule, impunctate in patruelis;
scutellar stria always well developed. Atlantic regions. [Type
Per. patruelis Dej.] Micromaseus nov.

24 — Body somewhat as in Parargutor, the head moderate; hind angles
of the prothorax well defined throughout, the foveae single, linear;
elytral striae more or less fine, the scutellar long; elytra frequently
sericeous in the female. Atlantic to Pacific regions, especially in
more northern parts. [Type Pt. adstrictus Esch.] Bothriopterus Chd.

PTEROSTICHIN.E 325

25 — Body oblong-subparallel, small to moderate in size, the integuments
polished and with iridescent lustre; head moderate; posterior tho-
racic angles generally rounded, sometimes sharply denned, the foveae
single; elytral striae deep, moderately punctured, the scutellar wholly
wanting, each elytron invariably with a single dorsal puncture at
about the middle of the length. Southern Atlantic and Gulf re-
gions. [Type Per. recta Say] Loxandrus Lee.

These groups, with but few exceptions, are so homogeneous within
themselves as to indicate natural and sharply delimited aggregates
of species, which is the usual test of genera or subgenera, but it
would be difficult to select those for full generic acceptance and those
which should more properly be considered subgeneric in value, which
is perhaps the reason why they are nearly all lumped under Ptero-
stichus in the European catalogue. Pterostichus tarsalis was placed
near morionides by LeConte as a Hammatomerus, but this is a de-
cided error; it is a Hypherpes near serripes.

The Pterostichus wrangelli Csy. (Mem. Col., IV, 1913, p. 131), is
nothing more than a synonym of castaneus Dej., and the single
dorsal puncture on each elytron must be regarded as a remarkable
accidental character in the single type of wrangelli. Castaneus will
however constitute a rather distinct subgenus within Hypherpes,
because of the modification of the last ventral segment in the male
by a depression, carina and submedial denticle. The men turn is
quadrate in form, with the apex broadly and rather deeply sinuate,
the lobes acute, and the prosternal process is margined along the
broad subtruncate tip. The head is less developed than usual in
Hypherpes.

The genus Myas looks decidedly out of place in this subfamily;
perhaps it should more properly represent a distinct subfamily
group because of the securiform labial palpi, wholly unlike any-
thing known among the more typical Pterostichids. I have in-
cluded it here simply for completeness, as it was included among
the Pterostichids by Horn, though not considered by LeConte in
his work on Pterostichus and allied genera, and was not mentioned
by Hayward in his treatment of the Amarinae.

I am much indebted to Mr. Leng for calling my attention to the
genus named Lyperopherus by Motschulsky, founded apparently
upon Pt. punctatissimus Rand. Mr. Leng states, in a letter just
received, that " I think that this genus was erected in Schrenk's

326 MEMOIRS ON THE COLEOPTERA

Reise, 1860, page 93, for our species, or for the similar Siberian
species cancellatus, which is considered a synonym of Randall's
species in the Siberian catalogue." In a male of punctatissimus
very kindly sent by Mr. Leng, taken in Newfoundland, there is a
semicircular impression at the abdominal apex, shallow and with
flat rugulose surface; it does not differ even varietally from a
female in my collection, taken by Sherman in Labrador. As
punctatissimus is well known, though not abundant, no further
reference to Lyperopherus will be made in the present work.

In the most recent European catalogue nearly sixty generic and
subgeneric names are united under Pterostichus. The utility of
this course is not apparent; it renders the subject no easier for the
student, more greatly complicates nomenclature and furthermore
does not express the actualities as found in nature. No very useful
or final revision of the subfamily could be formulated without in-
cluding the entire Pterostichid fauna of the world at large, and not
improbably some European groups, already named, may be among
the thirty- two appearing in the above provisional table of our own re-
stricted fauna; only seven or eight of these are at present monotypic.

Myas Dej.

This genus is mentioned at the present time only to call attention
to an evident mistake in our lists; foveatus Lee., is given as a syno-
nym of cyanescens Dej., whereas a reference to the descriptions shows
beyond doubt that cyanescens is a synonym of cor acinus Say, and
that both the latter and foveatus are valid species. The striae are
described as punctate both in coracinus and cyanescens and as com-
pletely impunctate in foveatus; the form of the thoracic side mar-
gins is also wholly different in the two species, making identifica-
tion so certain that the synonymy proposed, apparently by LeConte
himself (Bull. Bk., Dec. 1882), is wholly unaccountable. The ely-
tra in foveatus are described by LeConte as obsoletely violaceous
and shining; in my two examples, from Massachusetts and Lake
Champlain, the elytra are bright aeneo-violaceous in lustre.

Cylindrocharis n. gen.

The general appearance of the few known species allied to ros-
trata Newm., is so peculiar that I think there can be but little doubt

PTEROSTICHUSLE 327

that they should constitute a distinct genus, as named in the table.
The maxillary palpi are long and slender, but the fourth joint is
distinctly shorter than the third. The mentum tooth is very
broad, with the apex deeply sinuate medially, the lobes rounded.
The mandibles are finely and closely striate, except toward the
inner and outer margins and apex. The prosternum is subsulcate,
the process wholly unmargined, and the head is strongly tumid
behind the eyes. The known species are as follows:

Elytral striae widely and evenly spaced, the intervals virtually flat even
toward the sides; body larger and more elongate, cylindric, the outer
basal thoracic fovea separated from the sides by an obtuse though
pronounced carina, the basal angles somewhat prominent; scutellar
stria moderate, generally continuous with the first stria, the basal
part of the latter detached. Length (of 9 ) 14.8-16.0 mm.; width
4.8-5.0 mm. North Carolina (Black Mrs.) rostrata Newm.

Elytral striae unevenly spaced, closer, deeper and sulciform toward the
sides, where the intervals are narrower and extremely convex; spe-
cies not quite so large in size 2

2 — Pronotum with a fine, rather sharp carina near and parallel to the
side margins basally; elytral striae not evidently punctulate, the
scutellar stria distinct, moderately long; elytra distinctly wider than
the prothorax 3

Pronotum without a distinct carina near the margin posteriorly; elytral
striae distinctly punctate; scutellar stria indistinct 4

3 — Head (cf ) larger, nearly as wide as the prothorax, the eyes much less
prominent than the tumidity behind them; body deep black and
polished in both sexes; antennae much compressed, extending rather
behind the thoracic base; medial striation of the mandibles coarser;
prothorax virtually as long as wide, the base nearly four-fifths as
wide as the apex, the sides feebly arcuate, becoming gradually very
slightly sinuate toward the obviously sharp hind angles, which are
a little more than right; inner basal fovea large, deeply impressed
and smooth, the outer narrow and feeble along the pronounced
carina; elytra much shorter than in rostrata, three-fifths longer than
wide, rather obtusely rounded behind, the sinus very faint. Length
(cf 9 ) 12.7-14.7 mm.; width 4.4-5.0 mm. Probably Indiana.

sulcatula n. sp.

Head not quite so large, the eyes almost as prominent as the tumidity
behind them; body narrower, less deep black and more piceous,
similar in lustre and general sculpture, very shining; mandibular
striation finer; antennae slightly shorter; prothorax nearly similar,
though not so large; elytra similar in general character but narrower,
the sublateral series of coarse foveae similarly subconfluent poste-
riorly. Length (d*) 13.5-14.5 mm.; width 4.2-4.6 mm. New York
and Maine. Two examples piceata n. sp.

4 — Elytra not wider than the prothorax, the striae deep, punctate; body
in general rather similar to the preceding but with distinct punc-

328 MEMOIRS ON THE COLEOPTERA

tures of the elytral striae, indistinct scutellar stria and almost obso-
lete external carina toward the pronotal base. Length (9) 13.5
mm. New York. [Stereocerus grandiceps Lee.] . . . . grandiceps Lee.

The three differential characters relating to the thoracic cari-
nation, the scutellar stria and the distinct strial punctures of the
elytra, will, if even approximately true, serve to separate grandi-
ceps at once from any of the three preceding species. In rostrata
strial punctures are only occasionally feebly glimpsible under cer-
tain angles of reflection, and the same can be said even more truly
of sulcatula and piceata.

Hypherpes Chd.
Pterostichus Bon. (pars) Auct. Amer.

This large genus is almost wholly confined to the extreme western
parts of our territories, the small adoxus group being its only repre-
sentation in the Atlantic regions. In my former review of the
species, under the name Pterostichus, nearly all then known to me
were described, and on carefully looking again over the series I can
find but little which, under present lights, would appear to be in
the nature of obvious error.* A considerable number of species
received since that revision, or erroneously identified there, may be
defined as follows :

Hypherpes innatus n. sp. — Body only moderately elongate and dis-
tinctly convex, subparallel, shining, dark castaneous in color, the elytra
alutaceous in the female; head very moderate, not three-fifths as wide as
the prothorax, the eyes rather prominent, well developed, the sides be-
hind them not swollen; anterior sulci arcuate outward posteriorly; an-
tennae paler brown, slightly tapering, barely extending to the thoracic
base; prothorax notably large, only slightly wider than long, the base
margined except narrowly at the middle, rather broader than the evenly
sinuate apex and five-sixths the maximum width, which is before the
middle; sides strongly but not broadly reflexed, broadly arcuate, gradu-
ally subsinuously oblique posteriorly, the basal angles sharp but rather
more than right, the puncture in the angle bounded internally by a finely

* I find that the type of pugetanus Csy., is merely the female of crenicollis Lee.,
which was represented in my collection only by a male. The male is generally larger
than the female in the larger species of this genus and sometimes, as in herculaneus
has a shorter prothorax; the sides of the prothorax in the type of pugetanus are not
obviously crenulate, but this feature is variable in herculaneus and all others possess-
ing the character. The identity of ivrangelli Csy., with castaneus Dej., is sufficiently
evident, as shown by the male sexual characters at the abdominal apex, which I over-
looked in describing castaneus.

PTEROSTICHIISME 329

raised line; surface feebly convex, with widely separated wavy ruguli-
form lines, the stria moderate; impressions subobsolete; basal foveae
long, broadly impressed, the bottom sharply linear; at the sides basally
there is a very feeble longitudinal impression, between which and the
sides the surface is feebly elevated; elytra three-fifths longer than wide,
at the middle barely a fifth wider than the prothorax, the sides parallel
and evenly arcuate; apex obtuse, with feeble subapical sinus; striae deep,
impunctate, the scutellar moderate, oblique; intervals broadly convex,
more strongly toward the sides and apex. Length (9 ) 13.0 mm.; width
5.3 mm. Canada (west of the Rocky Mts.-).

This species may be placed near breviusculus, but is still shorter,
with relatively much larger and more convex prothorax and smaller
head; in breviusculus and others of that special section, the posterior
thoracic puncture, closely placed in the hind angles, is similarly in-
closed within a small elevated ring.

Hypherpes spissitarsis n. sp. — Elongate, subparallel, slightly convex,
deep black and shining, the legs and tarsi black; head two-thirds as wide
as the prothorax, the swollen sides behind the eyes as prominent as the
latter; mandibles finely punctulate distally; antennae black, moderately
stout; prothorax a fifth wider than long; sides parallel and broadly,
evenly arcuate from the distinctly produced and rather sharp apical
angles, becoming broadly, just visibly sinuate in about basal fourth;
base broadly sinuate medially, equal in width to the deeply sinuate apex
and feebly margined laterally, the angles right, not rounded; impres-
sions barely traceable; inner fovea long, the outer short, abruptly de-
fined externally; elytra three-fourths longer than wide, parallel and with
feebly arcuate sides and rapidly rounded obtuse apex, a fifth wider than
the prothorax; humeri strongly dentate; subapical sinus broad and feeble;
striae not fine, deeply impressed and with minute punctulation along the
bottom of the grooves, the scutellar short, with distinct ocellate puncture;
intervals distinctly convex; inner side of the hind tibiae serrate, the hind
tarsi short, thick, not three-fourths as long as the tibiae, not grooved ex-
ternally; anterior tarsi broadly dilated, deep black; sides of the body
beneath sparsely punctate. Length (cf ) 17.5 mm.; width 6.2 mm. Cal-
ifornia (Lake Tahoe). A single example.

This species is allied rather closely to tar sails Lee., from the same
region, but it is narrower, more convex, with smaller head, more
evenly rounded sides of the prothorax and with more prominent
and sharper apical angles, less strongly punctured sides of the body
beneath and other features. The last ventral segment of the male
has no tolerably definite transverse apical impression as in tar sails,
but the surface is gradually turned downward apically. The ely-
tral striae are more definitely punctulate in tar sails than in spissi-
tarsis; they are not impunctate as stated by LeConte.

33o MEMOIRS ON THE COLEOPTERA

The three following species are allied more or less closely to vali-
dus Dej.; they all have' the ocellate puncture near the scutellum
similarly distinct:

Hypherpes kansanus n. sp. — Subparallel and very moderately convex,
shining, piceous, the legs and epipleura pale rufous, head three-fifths as
wide as the prothorax, with moderate prominent eyes and deep arcuate
converging anterior sulci; antennae longer than the head and prothorax,
rather thick, ferruginous; prothorax just visibly wider than long, the
sides broadly, subevenly rounded, gradually very feebly sinuate broadly
toward base, the latter feebly sinuate medially, strongly margined later-
ally and distinctly wider than the apex, which is feebly sinuate, with
broadly rounded angles, the basal angles right, slightly blunt at tip; im-
pressions obsolete; inner fovea long, the outer wanting, the intervening
surface convex, the carina wanting; elytra three-fourths longer than wide,
a sixth wider than the prothorax, parallel, with feebly arcuate sides and
gradually rounding apex, the humeral denticle feeble and vestigial, the
subapical sinus broad and shallow; striae not coarse, deeply impressed
and without trace of punctulation, the scutellar short and deep; intervals
distinctly convex; prosternum distinctly sulcate; anterior male tarsi
strongly dilated and paler, ferruginous. Length (cf ) 12.5 mm.; width
4.7 mm. Kansas (probably western), — Snow.

Differs from validus in its more parallel form and relatively nar-
rower hind body, still more broadly rounded apical thoracic angles,
paler legs and antennje, more sharply sulcate prosternum and other
characters. The type was considered under validus in my previous
revision.

Hypherpes responsor n. sp. — Rather more convex, not so parallel,
shining, black, the elytra alutaceous in the female; under surface and legs
piceo-rufous, the anterior tarsi still paler; head two-thirds as wide as the
prothorax, the eyes moderate in size and prominence, with the deep sulci
arcuately converging; mandibles rufescent; antennae pale ferruginous,
the first joint blackish; prothorax barely visibly wider than long, the
sides broadly, subevenly arcuate, slightly oblique and feebly though evi-
dently sinuate basally to the right, rather sharp and subprominent
angles; base subequal in width to the apex, feebly sinuate medially and
margined laterally; apex feebly sinuate, with obtusely blunt angles; im-
pressions obsolete; inner fovea long, obtusely impressed, the outer want-
ing, the intervening surface feebly, evenly convex, without trace of im-
pression or carina; elytra two-thirds longer than wide, two-sevenths wider
than the prothorax, parallel and distinctly arcuate at the sides, evenly
rounded at apex, the humeral denticles nearly obsolete; subapical sinus
broad and very feeble; striae rather fine but deeply impressed, not at all
punctulate, the scutellar very short; intervals broadly convex, more dis-
tinctly laterad; prosternum feebly impressed, strongly margined, but
only at the extreme apex. Length ( 9 ) 13.0 mm.; width 4.75 mm. Van-
couver Island (Victoria), — Wickham.

PTEROSTICHIN.E 33 J

This species differs from validus in its shorter and broader form,
less elongate elytra, total absence of the feeble longitudinal impres-
sion near the hind thoracic angles, paler legs and paler antennae.

Hypherpes anthrax n. sp. — Nearly as in the preceding in outline but
more elongate, deep black, the legs black, the anterior tarsi feebly rufes-
cent; elytra slightly alutaceous in the female; head nearly as in responsor,
the mandibles smaller and black, the antennae piceous-black; prothorax
similar in outline to that of responsor throughout, except that the base is
transverse medially, or only vestigially sinuate, and is margined through-
out except at the middle; surface with the ruguliform lines more evident,
the impressions very feeble; inner fovea long, deeply though obtusely
impressed, the outer much shorter but distinct, forming a distinct carina
between it and the sides; elytra three-fourths longer than wide, a fourth
wider than the prothorax, the sides parallel and evenly arcuate; apex
less obtusely rounded than in responsor, somewhat as in validus, the
humeral denticles minute and subobsolete, the sinus almost completely
wanting; striae and intervals nearly as in the preceding, the short scu-
tellar stria similarly deep; prosternum almost similar. Length (9 ) 13.5
mm.; width 5.0 mm. Vancouver Island (locality unrecorded).

Allied to validus, but differing very much in the strong short
sulcus near the hind thoracic angles and denning a distinct carina;
in validus there is a short feeble impression in this position, usually
not attaining the base and not delimiting a carina; the body is
more elongate than in responsor and the mandibles are much smaller,
resembling those of validus.

Hypherpes restrictus n. sp. — Small and narrow, moderately convex,
shining, the elytra micro-reticulate but not dull; color rufo-piceous to
nearly black, the legs black, the femora rufous; head slightly elongate,
with distinctly prominent eyes, two-thirds as wide as the prothorax, the
sulci strongly arcuate; mandibles moderate; antennae not very stout,
black, gradually ferruginous distally; prothorax but slightly though evi-
dently wider than long, the sides subevenly rounded and finely reflexed
throughout, straighter and oblique basally to the minutely prominent
angles, which are more than right, owing to the rounding at the sides of
the base, the latter distinctly narrower than the apex, sinuate medially
and feebly margined laterally; apex moderately sinuate, with blunt
angles; impressions evident but feeble, the surface also with subobsolete
ruguliform lines; inner fovea moderate, not attaining the base, the outer
a barely visible short impression, the carina wholly wanting; elytra two-
thirds longer than wide, only a sixth wider than the prothorax, regularly
rounded behind, the sides feebly arcuate; humeral denticles minute; sub-
apical sinus extremely feeble; striae rather fine, moderately impressed,
minutely, closely and obscurely punctulate at the bottom, the scutellar
short, fine and feeble to wholly obsolete, the ocellate puncture always
completely wanting; intervals very feebly convex; prosternum faintly
impressed along the middle, the process not distinctly margined. Length

332 MEMOIRS ON THE COLEOPTERA

(cf 9) 9.3-11.2 mm.; width 3.2-3.7 mm. Female the smaller and nar-
rower. Colorado (Boulder Co., Leadville and Eldora) and Montana.
Eight examples.

Hitherto considered by me to be the same as longulus Lee., and
so described in my former revision, but it differs in its paler color-
ation and minutely prominent basal thoracic angles; there are simi-
larly three joints of the hind tarsi grooved externally, but* the groove
of the third is rather faint.

Hypherpes luscus n. sp. — Body not quite so narrow and rather more
parallel than in restrictus, black, with feeble piceous tinge, the legs rufo-
piceous; integuments similarly sculptured and shining; head three-fifths
as wide as the prothorax, nearly as in the preceding, except that the eyes
are smaller and less prominent; antennae dark castaneous throughout,
the third joint only a fourth longer than the fourth and slightly shorter
than in restrictus; prothorax larger, a fourth wider than long, the sides
less strongly arcuate, and more evenly so, almost to the basal angles,
which are feebly prominent; base feebly sinuate medially, margined lat-
erally, much broader than in the preceding and about as wide as the
moderately sinuate apex; both impressions distinct, the ruguliform lines
distinct; there is also a faint transverse impressed line parallel with the
base; median stria short, deep; inner fovea rather short, not attaining
base, the outer short and very feeble, the carina wanting; elytra more than
three-fourths longer than wide, only just visibly wider than the prothorax,
abruptly and obtusely rounded at tip, with evident sinus, the sides very
feebly arcuate, the humeral denticles very minute; striae strong, moder-
ately impressed, not distinctly punctulate, the scutellar rather short and
fine but usually visible, the puncture wanting; intervals very feebly con-
vex; prosternum nearly as in restrictus. Length (cf 9 ) 10.0-11.5 mm.;
width 3.35-3.9 mm. Female smaller, narrower and much less abundant
than the male. Colorado. Seven specimens from the Levette collection.

Also allied to longulus, but differing in the broader prothorax,
with minutely prominent basal angles and evident scutellar stria
—said to be wanting in longulus.

Hypherpes elumbis n. sp. — Form shorter, with relatively broader and
more oval elytra, piceous-black; under surface piceo-rufous; legs colored
as in restrictus; lustre moderately shining; head elongate, three-fifths as
wide as the prothorax, with rather long neck, moderate and somewhat
prominent eyes and arcuate, converging sulci; antennae nearly as in
luscus; prothorax also as in luscus throughout in almost every particular,
except that it is relatively smaller in size; elytra shorter, barely two-thirds
longer than wide, nearly a fourth wider than the prothorax, less abruptly
rounded behind, the parallel sides more arcuate, the sinus rather fainter,
very feeble, the humeri similar; striae finer than in the preceding, not
evidently punctulate, the scutellar short, oblique and fine, without punc-
ture; intervals feebly convex; prosternum nearly similar. Length (9)

PTEROSTICHIN.E 333

9.5 mm.; width 3.6 mm. A single specimen, unlabeled in the Levette
collection but probably from Colorado.

This very small species also belongs to the same section as the
two preceding and longulus, but it is more abbreviated and with
shorter and more oblong-oval elytra, the latter relatively wider
when compared with the prothorax; the base of the latter is not
yery obviously narrower than the apex.

In the three preceding species I can find no trace of the ocellate
puncture of the scutellar stria, which is usually visible throughout
the genus Hypherpes; it is probably also wanting in longulus.

Hypherpes intectus n. sp. — Form rather narrow and elongate, black,
shining, the elytra strongly alutaceous in the male; legs and tarsi black,
the anterior tarsi (cf) piceous; head moderate, slightly elongate, almost
two-thirds as wide as the prothorax; eyes moderate, prominent, the sulci
feebly arcuate, separated by a third the interocular width; antennae fusco-
ferruginous throughout; prothorax large, a fifth or sixth wider than long,
widest near apical fourth, with the sides moderately reflexed, evenly and
moderately rounded anteriorly, straighter and oblique basally and moder-
ately reflexed, scarcely visibly sinuate toward the basal angles, which are
obtuse, slightly blunt and not prominent; base scarcely sinuate medially,
margined laterally and distinctly narrower than the moderately sinuate
apex, the rather prominent apical angles blunt at tip; impressions both
obvious; inner fovea long, broadly and moderately impressed, the outer
very short, feebly impressed, the carina wanting; surface outside of the
inner fovea flattened; elytra nearly four-fifths longer than wide, a fifth
wider than the prothorax, regularly rounding at tip, the parallel sides
broadly arcuate, rounding more at base, the sinus feeble though evident,
the humeral denticles subobsolete; striae rather fine but well impressed,
impunctate, the scutellar short and oblique, the ocellate puncture small,
adjoining the second stria; intervals broadly though evidently convex.
Length (cf ) 14.0-14.2 mm.; width 4.6-4^ mm. Colorado (Boulder Co.).

Allied somewhat to occultus, from northern California, but lar-
ger, with more evident outer thoracic fovea and basally much less
sinuate sides, with less fine and much more impressed elytral striae
and convex intervals; in occultus the intervals are flat.

Hypherpes vivax n. sp. — Similarly elongate, rather narrow and moder-
ately convex, deep black, shining, the elytra (d71 ) not dull though strongly
micro-reticulate; legs as in intectus; head moderate, slightly elongate,
nearly two-thirds as wide as the prothorax, the eyes very moderate but
prominent; sulci strongly converging and arcuate; antennae fusco-ferru-
ginous, the first joint nearly black; prothorax scarcely visibly wider than
long, widest anteriorly, the sides broadly, feebly rounded, slightly con-
verging though only straight basally, moderately reflexed; base trans-
verse, margined laterally, with the angles obtuse but unrounded at tip,

334 MEMOIRS ON THE COLEOPTERA

just visibly subprpminent, distinctly narrower than the apex, which is
nearly as in intectus, the surface and foveae also similar, except that the
ruguliform lines are more visible and the transverse impressions obsolete;
elytra nearly similar, fully three-fourths longer than wide, rather over a
fifth wider than the prothorax, evenly rounded at tip, the broadly arcu-
ate sides barely at all more rounding basally, far less so than in intectus;
striae similar in fineness and impunctate but less impressed and more
abruptly incised, the scutellar short, scarcely oblique and wholly discal,
the ocellate puncture larger. Length (cf) 14.3 mm.; width 4.9 mm.
Wyoming (Yellowstone Park), — AVirt Robinson.

Resembles intectus but has the prothorax less arcuate at the
sides, the second antennal joint shorter and the strial intervals flat
and not sensibly convex; it also differs in the ocellate subscutellar
puncture, which is small and virtually on the second stria in intec-
tus, but larger and almost midway between the first and second
striae in vivax.

Hypherpes placerensis n. sp. — Form somewhat as in parens but larger,
less narrow, with larger head and basally more sinuate sides of the pro-
thorax, black, the under surface and legs piceous, very moderately con-
vex, the elytra slightly alutaceous; head nearly three-fourths as wide as
the prothorax, the eyes rather large and prominent, the sulci arcuately
converging; antennae somewhat thick, especially toward base, piceous-
black, gradually fusco-ferruginous distally; prothorax large, a fifth wider
than long, widest near apical third, the sides broadly rounded, rather
coarsely reflexed, becoming broadly and very distinctly sinuate basally;
base feebly sinuate medially, margined broadly toward the sides, the
angles slightly more than right but sharp, though not prominent, dis-
tinctly narrower than the apex, which is nearly as in intectus; surface
with feeble ruguliform lines, the impressions nearly obsolete; inner fovea
long, broadly impressed but sharp at bottom, not attaining the base, the
outer shorter, feeble though distinct and sometimes delimiting a feeble
carina; elytra fully three-fourths longer than wide, a third wider than the
prothorax, moderately rounded behind, the sides feebly arcuate, more so
basally, rather widely reflexed, the gutter deep; humeral denticles small
and feeble; striae rather fine, impunctate, feebly impressed, sharply de-
fined, the scutellar short, the puncture large and remote from the second
stria; intervals not quite flat. Length (cf 9 ) 15.0-15.8 mm.; width
5.5-5.7 mm. California (Placer Co.). Taken by Koebele in August.

This species may be compared with parens, from the same re-
gions, but differs as stated above; in parens the subscutellar punc-
ture is smaller and adjacent to the second stria. One of the two
specimens, the male, is pale red-brown throughout and seems to
have the elytra flatter.

Hypherpes alamedae n. sp. — Moderately elongate, more convex than
any of the three preceding species, black, the legs black; elytra (9)

PTEROSTICHIN^ 335

slightly alutaceous, with finer micro-reticulation than in the preceding;
head moderate, three-fifths as wide as the prothorax, with moderately
prominent eyes and arcuate sulci; mandibles shorter than in the preced-
ing types; antennae fusco-ferruginous, piceous basally; prothorax large,
a sixth wider than long, widest before the middle but narrowed only
slightly thence anteriorly, the sides oblique basally, becoming briefly
and barely visibly sinuate at the posterior angles which are right, not
rounded and minutely subprominent; base margined except medially,
evidently narrower than the apex, which is moderately sinuate, with
obtusely rounded angles; surface with some ruguliform lines, the im-
pressions very feeble, the anterior fine; inner fovea long, attaining the
base, the outer very short and feeble, delimiting a short and very feeble
carinule; elytra two-thirds longer than wide, a fourth wider than the pro-
thorax, gradually and evenly rounded behind, the parallel sides broadly
arcuate, the sinus long and very feeble; humeral denticles small and
feeble; striae rather fine, deep, extremely finely punctulate, the scutellar
short, wholly discal, the puncture elongate; intervals nearly flat, convex
on the apical declivity. Length (9) 13.0 mm.; width 4.7 mm. Cali-
fornia (Alameda).

Comparable only with vicinus Mann., than which it is much
stouter, differing also in the feeble carina near the basal thoracic
angles and in the decidedly more elongate third antennal joint; the
sides of the prothorax are less evenly rounded, becoming more paral-
lel before the middle.

Hypherpes mercedianus n. sp. — Form slender, rather notably convex,
black, the epipleura and legs piceo-rufous, the abdomen obscure rufous;
elytra feebly alutaceous; head slightly elongate, two-thirds as wide as
the prothorax, the eyes moderate; antennae longer than the head and pro-
thorax, ferruginous, gradually piceous basally; prothorax slightly elon-
gate, widest near apical third, the sides subevenly arcuate to a small
sinus adjoining the right and unrounded basal angles, finely reflexed;
base faintly margined only very near the angles, a little narrower than
the feebly sinuate apex, the apical angles obtusely rounded; impressions
feeble; median stria well impressed; inner fovea broadly, shallowly im-
pressed, a fifth the total length; surface thence to the sides wholly un-
modified; elytra almost twice as long as wide, not quite one-half wider
than the prothorax, the sides feebly arcuate; striae rather fine but deep,
the external feebly punctulate, the scutellar wanting, represented only
by a very short prolongation of the puncture; intervals feebly convex.
Length (cf ) 14.5 mm. width 5.0 mm. California (Merced Creek).

The type of this species was included with that of sierranus in
my former revision, but it can be distinguished easily by its narrower
and more convex form, much shorter basal sinus of the thoracic
sides, shorter and feebler inner foveae and very much more finely
reflexed edges, and also by the obsolete scutellar stria. The dimen-
sions of the Lake Tahoe female type of sierranus are 14.5 by 5.4 mm.

336 MEMOIRS ON THE COLEOPTERA

Hypherpes protensipennis n. sp. — Body narrow, very elongate, mod-
erately convex, rather shining, black throughout above and beneath, the
legs piceous; head nearly as in the preceding throughout, the eyes a little
larger and more prominent than in sierranus; prothorax slightly elon-
gate, widest near anterior third, the sides subevenly and moderately
rounded, gradually becoming faintly sinuate basally, finely but strongly
reflexed; base feebly sinuate medially, distinctly narrower than the apex,
rounded laterally, causing the sharp basal angles to be slightly more than
right, margined feebly only very near the angles; apex nearly as in mer-
cedianus; impressions faint; median stria 'moderately impressed; inner
fovea broadly impressed, less than a fourth the total length and not
attaining the base; surface thence to the sides unmodified; elytra very
nearly twice as long as wide, fully two-fifths wider than the prothorax,
the parallel sides feebly arcuate, more rounding at base; striae strong,
rather deep and notably punctulate throughout, the scutellar moderate
but distinct, oblique; intervals rather convex, especially toward the sides.
Length (a71 9 ) 14.5 mm.; width 4.8-4.9 mm. California. Two Levette
specimens, probably from the Sierran regions.

This species is also allied to sierranus and the type pair was in-
cluded under the description of the latter; it differs, however, in its
narrower outline, larger eyes, more finely reflexed thoracic sides
and more elongate and narrower elytra, with more punctured striae.
From mercedianus it differs in the more elongate basal sinus of the
thoracic sides, less convex elytra, with more punctured striae and
distinct scutellar stria and, from annosus, in its convex and not
flat strial intervals.

Leptoferonia n. gen.

Although not distinguished by any apparent structural charac-
ters affecting special organs, there is a small group of relatively
minute, more or less parallel species, allied to angustus Dej., which
look decidedly out of place among the much larger species of Hy-
pherpes, both in size and outline of the body, and it is probably well
worth while to form a separate genus of them, although there is some
diversity in several important characters, such as the margination
of the thoracic base and presence or absence of a carinule near and
parallel to the basal part of the thoracic side margins, which in all
cases are very finely reflexed. The elytral striae are complete and
in most cases are equal throughout, well impressed and completely
impunctate in every species known to me at present, excepting
pumilus. In my previous studies I made two groups of the species,
but this seems now unnecessary and Leptoferonia, as defined in the

PTEROSTICHIN.E 337

table, is designed to include both groups, for the basal margination
of the prothorax is diversified in each. Besides inanis, angustus,
crucialis, pumilus, humilis and ovicollis, as known to me among my
material, this genus will include also longicollis Lee., caligans Horn
and fuchsi Schf., the latter not correctly identified in my previous
work, having the basal thoracic angles not "obtuse" but minutely
sharp and prominent; it will also include the three following species:

Leptoferonia larvalis n. sp. — Body very small, narrowly elongate-oval
and convex, shining, pale testaceous in color; head notably small, barely
three-fifths as wide as the prothorax, elongate, with very moderate and
barely convex eyes; antennae testaceous, moderately compressed, fili-
form, slender on the narrow side, extending barely beyond the thoracic
base; prothorax very slightly elongate, the completely margined base
fully as wide as the feebly sinuate apex and five-sixths the maximum
width, the sides very broadly, moderately arcuate, a little less so basally,
the basal angles obtuse but with the apex slightly prominent and not
rounded, though not sharp at tip; foveae single, parallel to the axis, recti-
linear and not attaining the base, the external fovea and carina wanting;
elytra oval, three-fourths longer than wide, at the middle barely a fifth
wider than the prothorax; striae moderately deep, scarcely different api-
cally, the scutellar moderate but evident; punctures of the lateral series
widely spaced submedially; intervals broadly, not strongly convex.
Length (9) 6.65 mm.; width 2.35 mm. California (Hoopa Valley,
Humboldt Co.).

Allied to humilis and placed with the female type of that species
in my former study, but differing in its more slender form, narrower
head, smaller and less prominent eyes and rather more slender an-
tennae; the elytral apex is more obtuse and, in both, the sinus is
obsolete; the elytral striation is similar in the two; the sides of the
prothorax are a little more sinuate just before the basal angles in
humilis.

Leptoferonia fugax n. sp. — Elongate, slightly suboval, convex, polished,
piceous-black, the under surface and legs dark rufous; head elongate,
not quite three-fourths as wide as the prothorax, the eyes well developed,
slightly prominent, the anterior sulci strongly anteriorly converging;
antennae testaceous, somewhat as in the preceding but extending well
behind the thoracic base; prothorax barely longer than wide; base wholly
margined, biarcuate, somewhat wider than the very feebly sinuate apex;
sides parallel, feebly arcuate, rather rapidly but feebly oblique basally
to the obtuse though prominent and sharp basal angles; single subbasal
foveae small, short and feeble; medial stria rather deep, biabbreviated;
elytra two-thirds longer than wide, not quite a fourth wider than the
prothorax, obtuse at tip, the parallel sides but feebly arcuate, more so
near the base, the humeri strongly denticulate; stri'ae deep, a little shal-
T. L. Casey, Mem. Col. VIII, Oct. 1918.

338 MEMOIRS ON THE COLEOPTERA

lower apically, the scutellar very short; intervals strongly convex through-
out the width, less so apically; metasternal sides, and the abdomen latero-
basally, with small and very feeble sparse punctures. Length (d") 6.8
mm.; width 2.65 mm. California (locality unknown; the label reads
'"Cal.," with a vertical red line to the left).

This species was erroneously described under the name "fuchsi
Schf." (Mem. Col., IV, 1913, p. 128). The basal thoracic angles
in fuchsi are described as obtuse, and the size is materially larger;
fugax is much smaller and slightly stouter than longicollis Lee., and
with feebler sinuation of the sides of the prothorax before the basal
angles.

Leptoferonia inopina n. sp. — Body moderately stout, oblong-suboval,
convex, shining, piceous-black, the under surface and legs dark rufous;
head elongate, two-thirds as wide as the prothorax, the eyes rather large
but only moderately prominent; anterior sulci strongly converging; an-
tennae obscure testaceous, rather strongly compressed, slender on the
narrow side, extending slightly behind the thoracic base; prothorax
widest near apical third, fully as long as wide, rather narrower poster-
iorly than in the preceding; base feebly sinuate medially, transverse,
margined only in lateral fourth and evidently narrower than the apex,
which is subsinuously truncate; sides rather strongly rounded anteriorly,
gradually less arcuate and broadly oblique thence to the basal angles,
which are obtuse and slightly rounded, not in the least prominent; im-
pressions feeble, the posterior evident, the stria finely impressed, not en-
tire; subbasal fovea rather long, finely, deeply impressed, linear and longi-
tudinal; posterior marginal puncture far before the hind angles; elytra
nearly two-thirds longer than wide, barely a fifth wider than the pro-
thorax, rapidly obtusely rounded behind, the sides feebly arcuate, more
so basally, the humeri scarcely denticulate; stria? even throughout, rather
deeply impressed, the scutellar very short; intervals rather strongly con-
vex; prosternal process not evidently margined. Length (c?1 9 ) 8.0-8.5
mm.; width 2.8-2.9 rnm. Oregon (Josephine Co.), — Nunenmacher.

This is a remarkably isolated species in the longicollis subsection,
in having the posterior lateral thoracic puncture far before the basal
angle as in Ferestria obsoleta Say, and it differs greatly from fuchsi,
humilis and fugax in having the base not margined except at the
sides; from longicollis it differs at least in the obtuse and slightly
rounded basal angles of the prothorax.

Gastrellarius n. gen.

The species of this genus are small, peculiarly ventricose, with
deep elytral striae and a single dorsal puncture, on the third interval
near the second stria and more or less near the middle of the length;

PTEROSTICHIN/E 339

the subapical sinus is feeble though evident. The antennae and
legs are slender, the head moderate, with rather prominent eyes,
the thoracic fovese single and linear, the prosternal process unmar-
gined, the hypomera narrow, and the metasternum and latero-basal
parts of the abdomen are more or less punctured. The last ventral
segment has a single apical puncture at each side in the male, two
in the female. LeConte alludes to a very faint elevation toward the
abdominal apex in the male, but I have been unable to perceive
anything at all definite in this regard. The fourth palpal joint is
longer than the third, gradually pointed apically, and the mentum
tooth is long and with the apex blunt. The species will probably
prove to be somewhat numerous, the five at hand being easily sep-
arable as follows :

Elytral striae completely impunctate 2

Elytral striae punctured ; body very small 5

2 — Anterior tarsi of the male somewhat strongly dilated, the second and
third joints transverse. Body moderately stout and convex, pol-
ished, deep black, piceous-black beneath, the discal parts of the ab-
domen and the legs rufous; head not quite two-thirds as wide as the
prothorax, the eyes rather large, moderately prominent; anterior
sulci parallel, deeply impressed; antennss testaceous, slender, nearly
half as long as the body; prothorax rather large, a fourth wider than
long, the base transverse, two-thirds the maximum width and fully
as wide as the deeply sinuate apex, widest near apical third, the sides
strongly, subcircularly rounded, abruptly sinuate at base, abruptly
reflexed, the basal angles rather less than right, sharp and slightly
prominent; apex imperfectly margined; impressions feeble; stria
deep, subentire; basal parts punctate within the long deep foveae; ely-
tra very evenly oval, the sides not more strongly rounded basally,
one-half longer than wide and two-fifths wider than the prothorax;
striae very deep, the scutellar long, deep, joining the first, the inter-
vals strongly convex. Length (cf ) 8.5 mm.; width 3.3 mm. In-
diana atronitens n. sp.

Anterior tarsi of the male feebly dilated, the triangular second joint not

wider than long 3

3 — Hind body strongly inflated, the sides of the elytra more rapidly
rounding basally. Color blackish-piceous, polished in both sexes;
under surface and legs dark rufous; head fully two-thirds as wide as
the prothorax, with moderately large and prominent eyes, the an-
terior sulci feebly converging; antennae rufous, rather long and slen-
der; prothorax barely at all wider than long, the base (cf ) fully as
wide as the apex, or ( 9 ) somewhat narrower; apex sinuate; sides
finely, sharply reflexed, strongly rounded, at base nearly as in the
preceding, the angles slightly acute and prominent, scarcely more
than right in the female; surface and foveae nearly as in atronitens;

34Q MEMOIRS ON THE COLEOPTERA

elytra shorter, barely two-fifths longer than wide, barely less than
one-half wider than the prothorax, the striae deep and smooth and
the intervals rather strongly convex, equally in the two sexes; scu-
tellar stria moderate, free posteriorly. Length (cf 9 ) 7.7-8.5 mm.;
width 3.3-3.6 mm. Indiana. [Feronia fastidita Dej., and Stomis
americana Laf.] ' honestus Say

Hind body very moderately inflated, the elytra narrower than in hon-
estus and differing in having the sides not more strongly rounding
basally 4

4 — Form suboblong-oval, rather convex, polished, piceous, the elytra
more rufous; under surface and legs rufous; head more than two-
thirds as wide a's the prothorax, the eyes large and rather prominent,
the anterior sulci moderate, straight, just visibly converging and
extending posteriorly to a point opposite the anterior limit of the
eyes; antennae ferruginous, half as long as the body; prothorax but
just visibly wider than long, widest at apical two-fifths; base evi-
dently wider than the apex, which is only very feebly sinuate; sides
subevenly rounded, abruptly becoming straight and parallel in about
basal seventh or eighth, the angles right and sharp, the surface and
foveae nearly as in the two preceding; elytra one-half longer than
wide, at the middle about three-sevenths wider than the prothorax,
evenly oblong-oval, the sides evenly arcuate, the striae deep, smooth,
the scutellar rather long and generally joining the first; intervals
strongly convex. Length (cf) 8.0 mm.; width 3.25 mm. A single
example from the Levette collection, probably collected in Indiana.

scolopaceus n. sp.

Form, coloration, lustre and general characters as in scolopaceus but
smaller and narrower; head narrower and with the anterior sulci
coarser, longer, more irregular and extending posteriorly to a point
nearly opposite the middle of the eyes, feebly converging; antennae
as in the preceding but much shorter, slender; prothorax as in scolo-
paceus, except that the base is slightly narrower than the apex and
that the rounded sides posteriorly are gradually and more broadly
sinuate, not becoming quite parallel even at the angles, which are
somewhat more than right and sharp, though not at all prominent;
elytra in outline and proportion nearly as in the preceding but a
little shorter, the striae and intervals similar, except that the scu-
tellar stria is obsolete, represented only .by a feeble oval prolongation
of the ocellate puncture. Length (9) 7.0 mm.; width 2.7 mm.
Indiana deficiens n. sp.

5 — Body strongly ventricose, polished, black or piceous, the elytra some-
times rufous; under surface piceous, the legs pale rufous, the femora
shaded slightly darker basally; head rather small, three-fifths as
wide as the prothorax, elongate, the eyes well developed though not
very prominent; anterior sulci deep, punctured, almost parallel;
antennae ferruginous, slender; prothorax about as long as wide, the
sides strongly rounded, abruptly sinuate, the angles acute, minutely
prominent and everted; base margined throughout, rather wider
than the apex, which is barely visibly sinuate; surface nearly as in
the preceding species, except that there are no subbasal punctures;

PTEROSTICHIN/E 341

elytra short, a third longer than wide, nearly one-half wider than
the prothorax, the sides evenly rounded; stride rather coarse, very
deep, the scutellar short though evident; intervals strongly convex;
anterior tarsi of the male only feebly dilated. Length (cf 9 ) 5-O-
5.7 mm.; width 2.3-2.6 mm. North Carolina (Black Mts.), — Beu-
tenmiiller blanchardi Horn

That so large a proportion of the above species should have been
taken in Indiana alone, shows that there are probably a consider-
able number of species in the genus. Those above denned are all
seemingly quite distinct among themselves, the only one to which
any doubt may attach being deficiens, but the type being a female
and much smaller and narrower than the male type of scolopaceus,
the general rule in the genus being just the opposite, together with
the radical differences in the scutellar stria, would seem to show that
we have to deal with two separate species. The thoracic base is
generally wholly unmargined, but a fine margin at each side appears
in honestus, and in blanchardi there is a strong and entire basal mar-
gin ; these differences are interesting to note in connection with the
variability of the basal margination in Leptoferonia.

Anaferonia n. gen.

The numerous species of this genus present a rather uniform
appearance superficially, leading LeConte to pronounce them "opin-
ionative," but a large number of them at least cannot be so regarded.
They form a somewhat discordant element in the Pterostichid ser-
ies, being considered a part of Molops and later of Evarthrus by
LeConte, but transferred to Pterostichus by Horn, where their pecu-
liar habitus causes them to stand out as a very inharmonious group.
The fact is that they form a distinct genus, allied much more closely
to Evarthrus than to Pterostichus. The body is convex and stocky
and generally polished in both sexes, but sometimes with opaque
elytra in the female. The head is well developed, the antennae not
very thick, and the fourth palpal joint is truncate and somewhat
shorter than the third as a rule. As shown in pimalis, the mentum
is peculiar in sloping steeply in about anterior half, the hind margin
of the slope forming a prominent line, the apex deeply sinuate and
the lobes rather narrowly rounded; the prosternal process is broad
and unmargined. The prothorax is abruptly sinuate and con-
stricted at the sides near the base, the hind angles sharp and more

342 MEMOIRS ON THE COLEOPTERA

or less prominent as a rule, and the foveae are always bistriate. The
elytral striae vary greatly from deep to almost obsolete, and are
more or less evidently punctate; the scutellar stria varies from dis-
tinct to obsolete. There are no peculiar modifications at the ab-
dominal apex in the male and the anterior tarsi are well dilated in
that sex; there is a single terminal puncture at each side in both
sexes.

In the statement given below I have been obliged to identify the
published species from the short original diagnoses and may have
mistaken some of them, but so far as known to me our species are as
follows :

Prothorax parallel at the sides for a considerable distance before the basal

angles, which are right 2

Prothorax very briefly constricted at base, the angles notably obtuse. 10
2 — Scutellar stria long, uniting with the first stria at a considerable dis-
tance behind the scutellum. Body rather narrow and elongate,
strongly convex, polished, blackish-piceous, obscure rufous beneath,
the epipleura and legs paler rufous; head more than three-fourths as
wide as the prothorax; eyes large, moderately prominent; anterior
sulci broadly impressed, parallel; antennae obscure ferruginous and
rather stout, extending well behind the thoracic base; prothorax
only a fourth wider than long, the base four-sevenths the maximum
width, two-thirds as wide as the apex, which is feebly sinuate, with
well rounded angles; sides broadly, evenly arcuate, abruptly sinu-
ate at basal eighth, the sides thence diverging to the very sharp
basal angles; anterior marginal incised line deep, entire; stria, ex-
tending from it to the base, deep; anterior impression obsolete, the
posterior evident near the foveae, which are moderate, impunctate;
fine lateral carina strong and conspicuous; elytra oval, two-thirds
longer than wide, about a sixth wider than the prothorax, the sinus
very feeble, the lateral series not interrupted; striae deep, distinctly
and closely punctate, the dorsal puncture large, just behind the
middle and on the outer side of the second stria; seventh stria finer
and less impressed than the sixth but distinct; prosternum feebly im-
pressed; under surface impunctate. Length (o") 12.7 mm.; width

4.2 mm. Iowa distincta n. sp.

Scutellar stria extremely short, or, as a general rule, wholly obsolete. . .3
3 — Elytra sometimes slightly narrower than the prothorax, the sides of
which are more strongly rounded than usual, the base but little
more than half the maximum width. Body rather elongate, convex,
polished, black; under surface black, the legs piceous-black; head
fully three-fourths as wide as the prothorax, the sulci slightly arcu-
ate and feebly converging; prothorax two-fifths wider than long,
the sides strongly arcuate, abruptly sinuate near the base, the sides
thence parallel and straight to the right angles; base four-sevenths
the maximum width, less than three-fourths as wide as the broadly

PTEROSTICHIN.E 343

sinuate and strongly margined apex; subbasal impression feeble but
evident, not deeper near the foveae, which are impressed, the bottom
a long fine incised and outwardly arcuate line, curving outwardly
at base; lateral carina very fine; elytra elongate-oval, sometimes a
little narrower than the prothorax, the striae impressed, finely, not
closely punctate, the sixth slightly, the seventh much, finer and less
impressed; scutellar stria wholly wanting. Length (cf) 12.3-13.0
mm.; width 4.2-4.5 mm. New Mexico (Las Vegas). Three ex-
amples ovipennis Lee.

Elytra never as narrow as the prothorax, the base of which has much
more than half the maximum width 4

4 — Elytral striae extremely fine and not impressed, the sixth and seventh
barely traceable; intervals flat 5

Elytral striae distinctly impressed, the intervals more or less convex. . .6

5 — Form rather short and stout, black, shining, the elytra just visibly
alutaceous; legs piceous-black; head rather longer than wide, fully
two-thirds as wide as the prothorax; antennae black; prothorax not
a third wider than long, rather large, the apex sinuate, broadly,
strongly margined; foveae with a long inner impressed line, curving
outward at base, then forward at some distance from the lateral
edge and for less than half the length of the inner sulcus, the carina
obsolete; elytra one-half longer than wide, a fourth wider than the
prothorax, oval, with the sides rapidly rounding inward at the hu-
meri; subapical sinus broad and very shallow; striae with fine, feeble
and somewhat irregular punctulation, the scutellar wanting; met-
episterna much wider- than long, the epimeron more than half as
large as the episternum, as usual in this part of the Pterostichid
series; transverse sulcus toward the sides of the first abdominal seg-
ment conspicuous. Length (cf ) n.8 mm.; width 4.4 mm. Xew
Mexico (Sta. Fe), — Miss Greene substriata Lee.

Form more elongate, black, shining, the elytra feebly alutaceous in the
female; under surface and legs black; head barely elongate, nearly
three-fourths as wide as the prothorax; eyes well developed, the
sulci short, deep and parallel; antennae piceous-black, extending to
the thoracic base; prothorax slightly over a third wider than long;
apex sinuate but not margined, the usual deep incised line wanting,
except toward the sides, the latter less coarsely reflexed than in the
preceding, the part between the abrupt constriction and the base
straight, diverging and fully a sixth the total length; foveae nearly
as in the preceding but deeper; general surface with more evident
fine ruguliform lines; elytra three-fourths longer than wide, barely
a fifth wider than the prothorax, the arcuate sides more rounded at
base; subapical sinus broad and shallow but evident; striae consisting
of series of very fine, irregularly and well spaced punctules, the scu-
tellar subobsolete; intervals perfectly flat and having a few feeble
irregular transverse creases. Length (9) 12.8 mm.; width 4.35
mm. Mexico (Colonia Garcia, Sierra Madre Mts., Chihuahua), —
Townsend *evanescens n. sp.

6 — Body short and strongly ventricose, less so in the male. Deep black
and polished in both sexes, the legs slightly piceous; head relatively

344 MEMOIRS ON THE COLEOPTERA

not so large as usual, three-fifths as wide as the prothorax or less;
eyes moderate, the sulci coarse, deep, subparallel and slightly arcu-
ate; antenna? fuscous, blacker basally; prothorax two-fifths (cf) to
one-half (9) wider than long; base (9) two-thirds the maximum
width, less in the male; apex feebly sinuate, broadly and strongly
margined; fovese elongate, deeply impressed, the bottom a deeply
incised curved line bent anteriorly along and close to the parallel
basal part of the sides, the sides strongly rounded, the basal part
straight and parallel for a seventh the total length; elytra (9 ) less
than one-half longer than wide and nearly a third wider than the
prothorax, or (cf) one-half longer than wide and a fifth wider than
the prothorax, oval, the sides more rounding at base, the sinus
broad but rather deep; striae well impressed, the sixth and seventh
much less impressed and finer, the strial punctures strong and mod-
erately though irregularly close-set; intervals broadly convex inter-
nally; scutellar stria more or less evident but extremely short.
Length (icf, 59) 10.7-12.8 mm.; width 4.2-4.9 mm. Texas.

pantex n. sp.

Body narrower and less ventricose 7

7 — Elytra strongly shining in both sexes, this assumed in the case of

vernicata 8

Elytra strongly alutaceous to subopaque in the female 9

8 — Body convex, deep black and very highly polished; under surface
and legs deep black, the coxae rufescent as usual; head large, three-
fourths as wide as the prothorax, longer than wide; eyes large, rather
prominent, the sulci deep, subparallel; antennae fuscous, blacker
basally, extending behind the thoracic base, strongly compressed
and with the joints inflated apically on the narrow side as usual:
prothorax less than a third wider than long, of the usual form, the
sides evenly rounded to the subbasal constriction, thence just visibly
converging and straight to the right angles; apex feebly sinuate,
broadly, strongly and convexly margined; fovese smooth, very deep,
linear, the deeper line curving at base only to inclose the posterior
marginal puncture, the carina wholly wanting; sides rather finely
reflexed; surface very smooth; elytra very evenly oval, three-fifths
longer than wide, a fifth wrider than the prothorax; sides but little
more rounding basally to the obtuse humeri; subapical sinus broad
but very evident; striae only moderate in coarseness and impression,
the sixth slightly, the seventh much, finer, the scutellar extremely
short ; strial punctures fine and widely spaced ; intervals feebly convex,
the eighth much broader than any other. Length (cf) n.8 mm.;
width 4.4 mm. New Mexico (Alamogordo), — H. L. Shantz.

vernicata n. sp.

Body nearly as in the preceding but a little larger and somewhat stouter,
black, shining; under surface piceous, the legs obscure rufous: head
large and elongate, three-fourths as wide as the prothorax; eyes mod-
erate and rather feebly convex, the sulci coarse, deep, parallel and
contorted; antennae piceous; prothorax much shorter and more
transverse than in vernicata, almost one-half wider than long; apex
more deeply sinuate, the margin broad and flat, defined by a feeble

PTEROSTICHIN/E 345

fine incised line; sides arcuate, diverging and straight from the deep
constriction to the hind angles, which are less than right; surface
with some ruguliform lines, the anterior impression distinct and an-
gulate behind the flat margin, the posterior rather deep transversely
between the foveae, which are very deep, the sharply lineate bottom
outwardly curved basally, returning along the basal part of the sides,
where there is a feeble carina defined thereby; elytra almost one-half
longer than \vide, about a fourth wider than the prothorax, oblong-
oval, the sides very moderately arcuate, the humeri pronounced;
subapical sinus broad but very evident; striae deeply impressed, the
seventh notably feeble, the scutellar extremely short; punctures not
fine, deep, rather widely but irregularly spaced; intervals broadly
convex except laterally; dorsal puncture at three-fifths. Length
(9 ) !3-3 mm.; width 4.7 mm. Arizona (southern). . .pimalis n. sp.

Body smaller and more slender, black when mature and shining; head
large, not quite three-fourths as wide as the prothorax, not elongate;
eyes moderate, not very convex, the sulci and antennae somewhat
as in the preceding; prothorax fully two-fifths wider than long, the
sides less evenly rounded, more rapidly converging behind the middle,
similarly constricted, with the basal slightly diverging part about an
eighth the total length; apex feebly sinuate, the margination com-
plete but feebly defined; anterior and posterior transverse impres-
sions both distinct, the former subangulate but rather obtusely im-
pressed; foveae and carina nearly as in pimalis; elytra three-fifths
longer than wide, only very slightly wider than the prothorax, the
sides evenly and broadly arcuate; striae rather deeply impressed,
the outer but slightly less so and equally punctate, the punctures
very distinct, moderately separated; intervals broadly convex; scu-
tellar stria wanting; subapical sinus shallow but obvious. Length
(9) 12.4 mm.; width 4.2 mm. Kansas. Headwaters of Arkansas
River — Say. [Molops lixa Lee.] constricta Say

9 — Form a little stouter than the two following, rather less convex than
usual, black, the elytra opaque in the female; legs piceous-black;
head not elongate and with the neck short, five-sevenths as wide as
the prothorax; eyes well developed and rather convex, the sulci
parallel; antennae as usual, piceous in color; prothorax two-fifths
wider than long, the sides very evenly rounded from apex to the
constriction, thence parallel for a seventh the total length, the angles
right but rather blunt; apex feebly sinuate, the border flat and with
the defining line fine though entire; median stria deep, broadly im-
pressed; surface without transverse impressions, the foveae very def-
initely bilineate, the inner sulcus curving forward from the basal
recurvature and deep, defining a distinct cariniform elevation; ely-
tra nearly one-half longer than wide, oblong-oval, barely a fifth
wider than the prothorax, the subapical sinus almost obsolete, sub-
rectilinear; striae coarse and deep, the sixth feebler and the seventh
very fine, the punctures strong and rather close-set; scutellar stria
extremely short; intervals but very feebly convex; each elytron in
the type has a dorsal puncture just before and another just behind
the middle of the length — -probably an adventitious character.

346 MEMOIRS ON THE COLEOPTERA

Length (9 ) 12.3 mm.; width 4.5 mm. A single specimen, unlabeled
in the Levette collection, but probably taken in Indiana.

latebrosa Lee.

Form less stout, the size much smaller, black, more piceous beneath, the
legs piceous-black; elytra opaculate in the female; head not elongate,
with short neck, fully three-fifths as wide as the prothorax, the eyes
moderate and rather prominent; sulci slightly converging, nearly
straight; antennae piceous, of the usual structure; prothorax almost
one-half wider than long, the sides very evenly rounded from apex
to the constriction, thence straight and parallel to the angles, which
are right, slightly blunt at tip; apex feebly smuate, the margination
perfectly flat and defined by an entire though extremely fine and
feeble incised line, which, quite exceptionally, is broadly angulate;
anterior impression subobsolete, the posterior distinct, the basal
region longitudinally rugose; foveae nearly as in the preceding, ex-
cept that the external recurvature is shorter and does not define a
distinct carina; elytra nearly one-half longer than wide, oval, a fifth
wider than the prothorax, the sides very evenly and rather strongly
arcuate; subapical sinus short and very feeble; striae fine, feebly
though sharply impressed, the seventh feeble, the scutellar very
short; punctures fine and inconspicuous; intervals but just visibly
convex; dorsal puncture small and at three-fifths. Length (9)
10.5 mm.; width 3.85 mm. Texas (locality unrecorded).

pudica n. sp.

Form rather more elongate, moderately convex, shining, the elytra alu-
taceous, probably shining in the male; color piceous-black, the under
surface and legs dark rufous; head longer than wide, with the neck
very long in comparison with the two preceding, very nearly three-
fourths as wide as the prothorax; eyes moderately prominent; an-
tennae fusco-rufous; prothorax fully two-fifths wider than long, the
sides rather strongly reflexed, almost evenly arcuate from apex to
the subbasal constriction, thence parallel and straight to the right
and rather sharp angles; apex broadly sinuate, the margination
slightly convex, defined by a fine though distinct incised line; an-
terior impression feeble, just behind the margination, the posterior
deep and conspicuous from side to side; fovese not very deep, the
inner incised line not coarse, recurved at base, the recurvature closely
paralleling the straight part of the sides; surface with a few ruguli-
form lines; elytra three-fifths longer than wide, only very slightly
wider than the prothorax, the sides evenly arcuate; subapical sinus
broad and very feeble; striae rather sharply impressed, the seventh
feeble, the scutellar extremely short; punctures small but distinct;
intervals feebly convex, somewhat crenulated by the punctures;
dorsal puncture at three-fifths. Length (9) 11.7 mm.; width 4.0
mm. Arizona (locality unrecorded) papago n. sp.

10 — Fine incised line parallel -to the thoracic apex distinct, delimiting a
convex margination. Body unusually narrow and elongate, deep
black and polished throughout, the legs, obscure, the femora and
trochanters brighter, rufous; head somewhat elongate, nearly three-
fourths as wide as the prothorax; eyes rather prominent, the sulci

PTEROSTICHIN^E 347

subparallel; antennae fusco-testaceous; prothorax not over a fourth
wider than long; base distinctly sinuate medially and arcuate at
each side; apex more than usually sinuate; sides very evenly rounded
from apex to the moderately abrupt constriction, thence parallel
and straight for a tenth or twelfth the total length to the angles,
which are more than right though scarcely blunt; surface with a few
wavy ruguliform lines, smooth at base; transverse impressions both
distinct, the anterior arcuate; foveae somewhat rounded, deep,
smooth, the inner incised line short and fine, not attaining the base;
between the foveae and the sides there is a strong straight carina
along the parallel parts of the sides, its posterior end not at all in-
flexed; elytra three-fifths longer than wide, barely a fifth wider
than the prothorax, oblong-suboval, the subapical sinus long and
extremely feeble; striae deep, abruptly impressed, with the punctures
along the bottom scarcely distinguishable, the scutellar wanting,
the seventh distinct; intervals but just visibly convex. Length (cf )
13.0 mm.; width 4.2 mm. Iowa iowana n. sp.

Fine incised line along the thoracic apex wholly wanting as a rule, except
laterally 1 1

II — Prothorax of peculiar outline, the sides parallel and feebly arcuate,
more rounding apically and rather rapidly, arcuately converging
well behind the middle to the rather broadly rounded sinus, thence
becoming subparallel and straight for a very short distance to the
angles, which are barely more than right. Body rather small in
size, not stout, convex, polished and piceous, the abdomen and legs
rufous; head two-thirds as wide as the prothorax, the eyes only very
feebly convex; prothorax a third wider than long; base transverse
and rectilinear; posterior impression shallow but evident, the ante-
rior obsolete; foveae large and irregular, extending inwardly almost
to the middle, the inner incised line short, fine and far from the base,
the carina along the postero-lateral margin fine but distinct; elytra
over one-half longer than wide, a fourth wider than the prothorax,
oval, the sinus long and very shallow; striae rather coarse and deeply
impressed, finely punctate, the scutellar very short or wanting; in-
tervals rather strongly convex. Length (cf ) 11.5 mm.; width 4.0
mm. Kansas abdominalis Lee.

Prothorax of regular outline, the sides subevenly arcuate from apex to
the constriction 12

12 — Sides of the prothorax more strongly arcuate, more rapidly curving
inward posteriorly to the constriction. Body rather narrow and
elongate, shining, the elytra feebly alutaceous in the female, black,
the legs piceous; head fully two-thirds as wide as the prothorax,
the eyes prominent; antennae somewhat thicker basally than usual;
prothorax two-fifths wider than long, the subbasal sinus at the sides
broadly rounded, not at all abrupt, the sides thence becoming
scarcely parallel through the extremely short distance to the base,
which is transverse; surface with the transverse impressions feeble,
the anterior rather close to the apex; foveae consisting of the usual
two broadly and deeply impressed lines confluent basally, the outer
the shorter, half as long as the inner, the surface between it and the

348 MEMOIRS ON THE COLEOPTERA

sides convex but scarcely cariniform, the strong postero-marginal
puncture very slightly in advance of the obtuse hind angles; elytra
three-fifths longer than wide, a fifth wider than the prothorax, the
sinus short and shallow but distinct; sides arcuate, very moderately
reflexed, striae moderately impressed and with moderate though
very distinct and rather close-set punctures, the seventh finer but
punctate, the scutellar more or less evident though comminuted.
Length (cf 9 ) 12.0-13.0 mm.; width 4.2-4.5 mm. Arkansas.

Four examples incisa Lee.

Sides of the prothorax less rounded and more regularly oblique from apex
to constriction, the latter very broadly rounded and in no way ab-
rupt, the extremely short sides thence to the angles really forming
part of the sinus. Body not quite so elongate and more convex
than in the preceding, deep black, the legs piceous-black; elytra
highly polished in the male; head with rather long neck, somewhat
elongate, nearly three-fourths as wide as the prothorax; eyes rather
prominent, the anterior sulci long, slender, perfectly straight and
feebly converging; antennae rather long, piceous, not much stouter
basally; prothorax a third wider than long; base transverse, sinuate
medially; apex feebly sinuate; surface with some transverse wavy
rugulation, the anterior impression very feeble, the posterior scarcely
evident medially; median stria abbreviated basally but almost at-
taining the apex; fovese large and broadly impressed, the inner in-
cised curved line interrupted basally, the part along the basal mar-
gin evident and the external line deep as in the preceding; elytra
one-half or more longer than wide, almost as in the preceding, ex-
cept that the scutellar stria is obsolete and the intervals are more
convex, the striae deeper. Length (o71) 11.8-12.3 mm.; width 4.25
-4.4 mm. Pennsylvania. Two examples fausta n. sp.

Having been obliged to make the above identifications of
LeConte's species from the very short and undiscriminative original
descriptions, as stated above, it may be that some of them do not
strictly accord with the types; it would be scientifically advanta-
geous, however, if under the circumstances, the identifications here
used could be made the permanent record of these species, especially
as original type labels in the LeConte cabinet are known in many
cases to have been shifted accidentally from one specimen to an-
other during the many years of its existence. At any rate, the
above descriptions are full enough for identification and embody
passably well all the characters originally published by LeConte.

Cyclotrachelus Chd.

There is at hand at present but a single species assignable to
this genus, and to avoid ambiguity, I have therefore assumed it
to be typical. Roticollis seems to be peculiar to southern Florida

PTEROSTICHIN.E 349

and is usually identified as faber Germ., in collections, but in all
available descriptions of faber, including that of the synonymous
tenebricosa by Dejean, the elytral striae are said to be fine; they are
called "pen marquees " by the latter author. Now in roticollis the
striae are conspicuously coarse and deep. The prothorax in roti-
collis is fully as long as wide as a rule, but, in describing faber, Le-
Conte states that it is transverse. So several species have without
doubt been confused under the name faber. In this genus, as
represented by roticollis, the head is much less developed than in
Anaferonia, the prothorax more elongate and with single fovese
and with shorter and feebler basal constriction. The palpi are still
more slender and differ from those of any other genus near Evar-
thrus in having the fourth joint longer than the third and rounded
at tip. Besides unicolor, rotimdatus and brevoorti, which are much
larger in size, it is probable that Evarthrus vinctus Lee., will also
enter this genus, and the original outline of its characters is given
below for comparison. It is highly probable that the Mexican
Evartlirus constrictus of Bates, also belongs to this genus.

Body shining, convex and deep black, the legs rufo-piceous; head three-
fifths as wide as the prothorax, elongate-triangular, the neck short;
eyes notably large, rather prominent; anterior sulci subparallel,
slightly arcuate; antennae fusco-testaceous, blackish basally and ex-
tending to the thoracic base; prothorax as long as wide, much wider
just before the middle than at apex, the sides evenly rounded from
apex to the very short and not abrupt basal sinus, the angles obtuse
and not in the least prominent; base broadly sinuate except later-
ally, less than three-fifths the maximum width and about three-
fourths as wide as the apex, which is feebly sinuate and wholly un-
margined, except finely toward the sides; surface smooth, with very
few transverse ruguliform lines, the anterior impression feeble and
diffuse, the posterior obsolete; median stria deep, biabbreviated,
deepest at its posterior end, foveaa single, long , deep, impressed,
subarcuately linear, not attaining the base; externally, there is no
modification of the surface, but at the basal margin, near the pos-
terior puncture at the angle, there is a small isolated rounded punc-
ture; elytra oblong-oval, one-half longer than wide, nearly a third
wider than the prothorax, the sinus rather short and deep; striae
strong and deeply impressed, becoming very fine and almost punc-
tureless posteriorly, strongly punctured, the scutellar wanting, the
sixth feebler, the seventh very fine, the submarginal very close to
the eighth; intervals broadly convex; dorsal puncture at three-fifths.
Length (cf 9 ) 12.5 mm.; width 4.2 mm. Florida (locality unre-
corded and also taken at Dunedin by Mr. Blatchley).

roticollis n. sp.

35O MEMOIRS ON THE COLEOPTERA

Body shining, black; prothorax not wider than long, not at all narrowed
at apex, which is scarcely emarginate, very much narrowed behind,
where it is only half as wide as at apex, moderately rounded on
the sides, sinuate posteriorly; angles acute, prominent; interior basal
impression long, the exterior extremely short, almost obsolete; car-
ina obsolete; anterior transverse line and impression wanting.
Length 10.7 mm. Georgia (Nakutshi, Habersham Co.).

vinctus Lee.

These two species seem to differ considerably in the form of the
prothorax, especially at apex and about the hind angles, and vinctus
is somewhat the smaller in size.

Megasteropus n. gen.

•

A single very large species, one of the largest of our Pterosti-
chinae, alone constitutes this genus as far as known. It is character-
ized by a notably large head, with well developed mandibles and
very deep superciliary groove, convex and deeply constricted pro-
thorax, with very much deflexed apical angles and total absence of
normal punctuation of the elytral striae. I at first thought that
Feronia heros Say, might also enter the genus, but, as shown below,
this is highly improbable. The type may be described as follows:

Body very large, stout, strongly convex, deep black, shining, the elytra
barely less so even in the female; head large, the eyes rather prom-
inent; sulci very coarse and deep, parallel; antennae (9 ) thick bas-
ally, only a fourth longer than the head: mandibles striate only
anteriorly; prothorax with transverse ruguliform lines, fully one-
half wider than long, equally wide at base and apex, the sides thickly
but not broadly margined, strongly, subevenly rounded, very rap-
idly oblique posteriorly to the deep stricture, thence strongly diverg-
ing to the slightly blunt but prominent angles; apex strongly sinu-
ate, the margination flat and well denned by an incised line; stria
fine, deep, broadly impressed, much abbreviated at base, which is
transverse and three-fourths the maximum width; anterior trans-
verse impression obsolete, the posterior rather deep; foveae very
deep, smooth at the bottom, the inner line long, the outer short,
the carina obtusely prominent; elytra oblong-oval, three-fifths longer
than wide, a fourth or fifth wider than the prothorax, deeply im-
pressed along the basal margin, the extremely fine and feeble super-
ficial striae being merely a succession of short lineiform and barely
visible comminution, not having the nature of punctures; lateral
series lying along a deep coarse impression, uninterrupted medially.
Length (9) 26.0-27.0 mm.; width 8.3-9.7 nim. Texas. Levette
collection gigas n. sp.

This remarkable species I have had for many years under the

PTEROSTICHINJE 351

name heros Say, but on examining the description of Say, which is
repeated under the next genus, it would seem to be conspicuously
different. The striae in heros are said to be fine but acute and punc-
tate, the punctures obsolete posteriorly. In gigas the striae are
extremely and equally fine throughout the length and are composed,
in the female at least, of minute and short lineiform dashes, in no
way resembling punctures and equally evident from base to apex
—similar to the apical part of the striation in the female of Eumo-
lops ampla. In the drawing of an assumed heros, from Texas, given
by LeConte (]. Ac. Phila., IV, t. 4, f. 2) the thoracic base is much
narrower than the apex and the side margins are much more widely
reflexed; in a drawing such as this the elytral sculpture of gigas
would be entirely invisible. Neither Say nor LeConte alludes to
any deflection of the apical thoracic angles, which is so conspicuous
a feature in gigas, and the figure referred to gives no indication of
it. The size of heros, as given by Say, is materially less than that
of gigas. In Eumolops ampla the sculpture of the elytra is exactly
that which might be inferred from Say's description of heros, but
this species is evidently different, being much more abbreviated.
In describing heros, LeConte (Proc. Ac. Phila., 1873, p. 318) states
that the scutellar stria is long; in gigas the sutural stria in its ob-
lique basal part becomes much coarser and deeper than the rest of
the stria, and the author quoted may have mistaken this for a scu-
tellar stria in his Texan representative of heros, if congeneric with
gigas. In gigas there is only a feeble diffuse impression surround-
ing the ocellate puncture, in no way resembling a stria.

•

Eumolops n. gen.

The species of this genus are rather numerous and were included
under Evarthrus by LeConte; the entire habitus, not only due to
the deeply constricted prothorax but in other features, is however
quite different from that of Evarthrus, as may be seen readily when
series of the two genera are juxtaposed. The maxillary palpi in
Evarthrus, although not notably stouter than in Eumolops, have
the last joint not fusiform and with the apex more truncate. The
prothorax is varied in form somewhat as in Hypherpes, in having
the base equal to or wider than the apex to very much narrower,
like that of the much smaller Anaferonia, and the foveae are always

352 MEMOIRS ON THE COLEOPTERA

bistriate as in the latter. The incised line behind the apical mar-
gin is generally well developed, but in the species with narrow
thoracic base it becomes wholly obsolete medially, this diversi-
fication also being somewhat as in Anaferonia. The prosternum
is impressed along the middle, the sulcus becoming very feeble in
some species; this is not an important character from a generic
viewpoint. In the male the entire upper surface is frequently
highly polished, but in the female the elytra are apt to be more
opaque; in gravida the lustre is similar in the two sexes. The scu-
tellar stria varies from long and distinct to virtually obsolete.

The species known to me are as follows, the description of heros
Say, being taken from the original:

Body stouter, less convex; thoracic base as wide as the apex or wider,
the apical incised line always distinct and entire; scutellar stria
usually evident, sometimes long, rarely wanting; prosternum sul-
cate 2

Body less stout and more convex, the thoracic base much narrower than
the apex, the apical incised line completely wanting, except toward
the sides; scutellar stria wanting or vestigial; prosternum less im-
pressed 7

2 — Body notably large in size, black and glabrous; mandibles much and
deeply striated; thorax large, convex, rather abruptly contracted
at the basal margin; dorsal and anterior and basal lines distinct;
basal margin depressed near the angles, rugose; an elevated line on
the basal margin, near to and parallel with the lateral edge; basal
angles rectangular; elytra very slightly striated; striae acute, punc-
tured, the punctures obsolete toward the tip; interstitial lines flat;
beneath black. Length rather more than nine-tenths of an inch
[say 23 mm.]. The Arkansas. [Feronia heros Say] heros Say

Body evidently not so large in size 3

3 — Scutellar stria fine, short, punctate, entirely discal, not approaching
the first stria, which continues unbroken to the base. Body oblong-
oval, stout, feebly convex, deep black and shining, the elytra alu-
taceous in the female; legs black; head slightly more than half as
wide as the prothorax, the eyes moderately prominent; sulci coarse,
long and deep, extending also through about basal half of the epi-
stoma; antennae black, with the vestiture pale gray, extending almost
to the thoracic base; mandibles striate throughout; prothorax fully
one-half wider than long; base slightly wider than the apex, which is
sinuate, broadly margined, the margination flat, delimited by an
incised line, the angles not deflexed as in Megasteropus but as in all
the following species; sides broadly rounded, coarsely reflexed, the
edge thick, gradually converging toward the very moderate stric-
ture and thence straight and just visibly diverging to the right angles;
surface with feeble ruguliform lines; anterior impression obsolete,
the posterior distinct, subangulate, the stria coarse, almost attain-

PTEROSTICHIN^E 353

ing the base; inner fovea coarse, deep and linear, the outer slightly
shorter, coarsely incurved along the margin at base, the carina long,
coarse, obtuse; elytra oblong-oval, two-fifths longer than wide, a
fourth wider than the prothorax, the striae very fine, not at all im-
pressed, finely but distinctly punctate, the punctures gradually very
fine and lineiform posteriorly; marginal stria very fine, midway
between the eighth and margin. Length (9) 19.5 mm.; width 8.3
mm. Texas ampla n. sp.

Scutellar stria long, forming the basal part of the first stria, the true
basal part of the latter detached 4

Scutellar stria wholly wanting 6

4 — Thoracic sides behind the constriction very strongly diverging to the
angles, which are acute or much less than right. Body not so stout
as usual in this section and more convex, shining, deep black, the
legs black; elytra opaculate in the female; head two-thirds as wide
as the prothorax, the eyes rather feebly convex; sulci short, coarse,
only very feeble on the epistoma; antennae fuscous, black basally,
the pubescence gray; prothorax two-fifths wider than long; base
and apex equal and subsimilarly, very distinctly sinuate, the sub-
apical incised line deep, entire; sides coarsely reflexed, evenly, rather
strongly arcuate, the stricture deep though rounded; surface every-
where with coarse deep and conspicuous ruguliform lines, especially
deep about the foveae; anterior impression feeble, the posterior deep,
subangulate; inner fovea narrow, abruptly deep, the outer about
half as long, not incurved at base; between it and the marginal gutter
the carina is narrow and strong; elytra oval, convex, three-fifths
longer than wide, fully a third wider than the prothorax, the sides
rather broadly reflexed, the marginal stria midway; striae coarse
and deep, coarsely, deeply punctate, both striae and punctures feeble
apically; intervals not quite flat. Length (9) 17.0 mm.; width
6.3 mm. Florida prominens n. sp.

Thoracic sides behind the constriction feebly diverging (cf ), or parallel
(9), the angles right, sometimes rather blunt; body broader and
less convex 5

5 — Body (cf) elongate-oval, moderately convex, highly polished through-
out and deep black, the legs also black; head large, not quite three-
fourths as wide as the prothorax; eyes moderately prominent; sulci
coarse and deep, rather deep also on the basal part of the epistoma;
antennae long, extending well behind the thoracic base, black, rufes-
cent distally; prothorax two-fifths wider than long; base feebly sinu-
ato-truncate, as wide as the rather deeply sinuate apex, the margin-
ation of the latter wide, delimited by a fine and entire, rather feeble
incised line; sides rather coarsely reflexed, evenly, somewhat strongly
arcuate to the stricture, which is shallow, gradual and rounded, thence
straight a*nd not very long to the angles; surface with feeble ruguli-
form lines, very deep and coarse at the foveae; anterior impression
very feeble, the posterior distinct; inner fovea long and deep, the
outer two-thirds as long, not incurved at base, the carina strong;
elytra oval, three-fifths longer than wide, a fourth wider than the
T. L. Casey, Mem. Col. VIII, Oct. 1918.

354 MEMOIRS ON THE COLEOPTERA

prothorax; striae not coarse but deeply impressed, rather strongly
loosely punctate anteriorly; intervals conspicuously convex. Female
differing considerably, being stouter, with the elytra broader, opaque
and with the intervals nearly flat; ruguliform lines of the pronotum
deeper. Length (cf 9 ) 17.0-18.5 mm.; width 6.5-7.3 mni. New
Mexico (Las Vegas) sexualis n. sp.

Body broader, moderately convex, deep black throughout, shining, the
elytra dull in the female; head three-fifths as wide as the prothorax,
parallel basally, the neck scarcely at all constricted behind the eyes,
which are but feebly convex; sulci coarse, parallel, slightly arcuate;
antennae well developed, black, ferruginous distally, the gray pubes-
cence conspicuous; prothorax shorter and more transverse than in
the preceding, one-half wider than long; base scarcely as wide as
the apex, sinuato-truncate; apex distinctly sinuate, the margination
delimited by a strong incised line; sides strongly, evenly arcuate and
coarsely reflexed to the stricture, which is less broadly rounded than
in the preceding and a little further from the basal angles; surface
with impressions and rugulosity nearly as in the preceding, the
double foveae also almost similar, except that the inner is more
regularly and sinuously continuous with the outer along the basal
margin; elytra barely one-half longer than wide, a fifth wider than
the prothorax; striae fine, feebly impressed, the punctures small but
distinct, widely and irregularly separated, obsolete apically, the in-
tervals about flat; marginal stria midway, it and the eighth distinctly
punctate; ocellate series as usual, uninterrupted. Length (9) 17.8
mm.; width 7.35 mm. Colorado (Akron), — Shantz. .inflatula n. sp.

6 — Form very stout, oblong-suboval, moderately convex and shining,
the elytra subequally so in the two sexes; body and legs deep black;
head four-sevenths as wide as the prothorax, slightly elongate; eyes
rather large and somewhat prominent, the sulci coarse and deep;
antennae well developed, slightly thickened basally, black, ferru-
ginous apically; prothorax one-half wider than long; base broadly
sinuate, except laterally, and wider than the deeply sinuate apex,
the margination of the latter defined by an evenly and deeply in-
cised line; sides coarsely reflexed, rounded, gradually and broadly
sinuate basally, the angles right; anterior impression obsolete, the
posterior deep and distinct; ruguliform lines feeble, more evident
basally; inner fovea long, deeply impressed, acute at bottom, not
attaining the base, the outer three-fourths as long, less sharply im-
pressed, attaining and sometimes curving inward along the base, the
carina high but obtuse; elytra a third to two-fifths longer than wide,
only a fifth wider than the prothorax, obtusely ogival in about api-
cal third, the sinus broad and barely traceable; striae rather fine but
well impressed, the punctures comparatively coarse, crenulating
the broadly convex intervals, obsolete apically. Length (cf 9 ) 19.5
—20. 8 mm.; width 8.3-8.7 mm. Texas. Three examples.

gravida Hald.

7 — Sides of the prothorax behind the constriction long, usually diverging
basally, the constriction deep and abrupt, the basal angles right.. .8

PTEROSTICHIKLE 355

Sides behind the much feebler constriction notably short, the basal
angles obtuse, though not rounded as a rule 10

8 — Sides of the prothorax more oblique and very moderately rounded
from apex to the constriction. Form not very stout, convex, deep
black, the under surface and legs somewhat piceous-black; upper
surface highly polished, the elytra in the female but slightly aluta-
ceous; head large, nearly three-fourths as wide as the prothorax;
eyes rather large and prominent, the sulci parallel, deeply impressed;
antennae extending slightly behind the thoracic base, piceous-black,
gradually ferruginous distally; prothorax scarcely a third wider than
long, the sides finely reflexed but with thick bead; base transverse,
distinctly narrower than the apex, three-fourths the maximum
width, which is near apical third; anterior and posterior impressions
obsolete, the latter represented by a depression near the inner fovea,
as in some other species of this genus as well as in Evarthrus; inner
and outer foveae forming a single deep elongate concavity, the sharp
line of the inner curving outward at base to the outer; carina dis-
tinct, confluent with the margin basally; elytra oval, nearly three-
fifths longer than wide, a fourth (cf) to nearly a third (9) wider
than the prothorax, the sides arcuate, the sinus feeble, more evident
in the female; marginal stria fine, impunctate, submedial; striae mod-
erately strong, sharply incised, finely but distinctly punctate, the
scutellar wanting; intervals almost perfectly flat, not alternating in
width. Length (cf 9 ) 15.5-17.0 mm.; width 6.0-6.2 mm. Penn-
sylvania (Rockville), — A. B. Champlain furtiva Lee.

Sides of the prothorax less oblique, subevenly, strongly and almost cir-
cularly rounded from apex to the constriction; marginal stria of the
elytra submedial but coarser and punctate 9

9 — Body but very slightly ventricose, only moderately convex, polished
in the male, deep black, the legs piceous-black; abdomen and epi-
pleura obscure rufous; head rather large though only about three-
fifths as wide as the prothorax; eyes moderate, rather prominent,
the sulci coarsely and deeply impressed; antennae nearly as in the
preceding; prothorax larger, not quite a third wider than long, the
sides evenly and rather deeply reflexed; base feebly sinuate except
laterally, scarcely two-thirds the maximum width; apex distinctly
sinuate; transverse impressions broad and very feeble, the posterior
deep only in a depression near each inner fovea, the foveae coalescent
somewhat as in furtiva; carina united completely with the side mar-
gins, the angles slightly reflexed; scutellum prominently rugulate in
basal, smooth in apical, half; elytra elongate-oval, nearly two-thirds
longer than wide, only a fifth wider than the prothorax; sides evenly
arcuate, broadly reflexed, the sinus broad and very feeble though ob-
servable; striae rather coarse, deeply impressed, strongly and rather
closely punctate, the scutellar short, forming a fine bipunctured line
behind the ocellate punctures; intervals strongly convex, subequal,
the seventh toward base becoming prominent, the ridge ending at
the omoplate; humeri rounded and not denticulate. Length (cf )
17.8 mm.; width 6.6 mm. Florida sulcata n. sp.

Body much more ventricose but not very stout, convex, deep black, shin-

356 MEMOIRS ON THE COLEOPTERA

ing (cf ) or with the elytra opaque (9 ); legs black; head more than
two-thirds as wide as the prothorax, not elongate, the neck well de-
veloped; eyes rather prominent, the sulci not very coarse, slightly
converging; antennae as in sulcata and others of this group; prothorax
relatively much smaller, somewhat more than a fourth wider than
long; base feebly sinuate medially, not three-fifths the maximum
width; apex evidently sinuate; sides not coarsely reflexed but with
somewhat thickened edge, the parallel basal part a fifth or sixth the
total length; transverse impressions very diffuse though evident,
the posterior not forming a juxta-foveal depression; inner and outer
foveae coalescent, deep, elongate, the carina rather long but fine and
adjoining the margin; scutellum smaller, triangular, smooth through-
out; elytra oval, two-thirds longer than wide, two-fifths wider than
the prothorax; sides moderately reflexed, the sinus scarcely trace-
able; striae moderate, rather sharply and deeply incised, the punctures
somewhat conspicuous, gradually obsolete behind, the scutellar stria
a minute oval impression; intervals generally somewhat alternating
in width, the second and fourth wider than the others, broadly but
distinctly convex (cf), nearly flat (9). Length (cf 9 ) 17.5-18.5
mm.; width 6.0-7.0 mm. Iowa (Keokuk). Pennsylvania — Le-

Conte sodalis Lee.

10 — General outline and convexity nearly as in sodalis, rather shining,
black, the elytra opaculate in the female; head three-fifths as wide
as the prothorax, the eyes only moderately prominent, the sulci
slightly converging; antennae as in the preceding; prothorax also
somewhat similar in outline and strongly, subcircularly rounded at
the sides, but with the constriction less abrupt, shallow and broadly
rounded, the sides thence to the base very short; disk somewhat
shorter and more transverse than in sodalis, otherwise nearly simi-
lar; elytra two-thirds longer than wide, fully three-sevenths wider
than the prothorax, oval, the striae rather fine but deep, scarcely at all
impressed, the punctures not coarse but deep and conspicuous, obso-
lete apically; scutellar stria obsolete; intervals subequal, nearly flat
in the female. Length (9) 15.8-18.0 mm.; width 5.7-6.6 mm.
Indiana. Four specimens fatua Lee.

Evarthrus sallei, colossus and torva of LeConte also probably be-
long to this genus, but the first is wholly unrecognizable, the two
lines in the table (Proc. Acad., 1873, p. 319) conveying no useful
information ; not even a measurement of length or recorded locality
is indicated, and, as the above is virtually the only reference to it,
I am obliged to consider it unpublished and therefore as merely a
manuscript name. Colossus, with its vestigial and punctiform scu-
tellar stria, I have not seen, apparently it belongs near gravida;
torva is also unknown to me. Two of my three specimens of grav-
ida have the scutellar region perfectly normal, the ocellate punc-
ture being merely within a feeble non-striiform impression, but in

PTEROSTICHINyE 357

the third specimen there is a singular abnormality; the ocellate
puncture and feeble impression are as in the others, but between
the ocellate puncture and the first stria there is an oblique incised
line, subparallel to the oblique basal part of the first stria; this
oblique line is not connected in any way \vith the ocellate puncture
and is presumably wholly adventitious.

The species described under the name corax by LeConte, from
near the Rocky Mountains, I have not seen, but the indications are
that it is a distinct species and not a synonym of sodalis; fatua,
also placed as a synonym of the latter in the lists, is a perfectly
valid species, differing greatly in the basal part of the prothorax
and more slender outline. LeConte makes no mention of alter-
nating widths of the strial intervals in sodalis; possibly this may have
been overlooked, or else the Mississippi Valley form may be specif-
ically different from the Pennsylvania type. I have no means of
deciding this at present.

Subgenus Evarthrinus nov.

The two following species so closely resemble fatua, that they are
probably commingled in collections. The body is generally more or
less opaque in both sexes. As a group they differ from the preceding
part of the genus in having three dorsal punctures on the elytra,
instead of the one so invariable in Evarthrus and allied genera.

Body moderately stout and but feebly ventricose, dull in lustre, with the
anterior parts less so, deep black throughout; head notably large,
more than two-thirds as wide as the prothorax, with rather prom-
inent eyes and deep subparallel sulci; antenna? black, ferruginous
only at apex; prothorax a third to two-fifths wider than long, the
sides only moderately coarsely reflexed, strongly, subevenly rounded
to the constriction, thence parallel in basal seventh or eighth to
the right but bluntly rounded angles; surface with some ruguliform
lines, the anterior incised line deep, entire; fovese forming an oblong
concavity, the carina long, close to the edge; base three-fourths the
maximum width and evidently narrower than the sinuate apex;
elytra two-thirds or more longer than wide, two-fifths wider than
the prothorax, the sides gradually rounding from slightly behind
the middle; striae distinct, moderately impressed and deeply and con-
spicuously though not very coarsely punctate, the scutellar varying
from evident to obsolete; intervals not quite flat; three dorsal punc-
tures distinct. Length (d71 9 ) 16.0-18.0 mm.; width 5.8-6.3 mm.
Indiana. Three specimens decepta n. sp.

Body somewhat similar in color and lustre but smaller, not quite so stout
and with less developed head, the latter scarcely three-fifths as wide

358 MEMOIRS ON THE COLEOPTERA

as the prothorax, the eyes only moderate; sulci parallel; antennae
black, gradually ferruginous from about the middle; prothorax two-
fifths wider than long, throughout nearly as in decepta, except that
the straight parallel part of the sides behind the constriction is
shorter, a ninth or tenth the total length; elytra three-fourths or
more longer than wide, relatively less inflated, only about a fourth
wider than the prothorax, similar in outline, striation and punctures,
the latter likewise gradually obsolete posteriorly; three dorsal punc-
tures deep and distinct; scutellar stria obsolete or vestigial; marginal
stria submedial in the outer interval. Length (cf 9 ) 14.5-15.0 mm.;
width 5.2-5.4 mm. Texas impolita n. sp.

The scutellum is longitudinally plicatulate as a rule in both these
species, and, as usual among the Evarthrids, is very transverse and
triangular.

Evarthrus Lee.

This genus is composed of a moderate number of species pos-
sessing a closely similar habitus, due to the generally opaque integ-
uments in both sexes; sometimes this opacity extends to the entire
body as in enormis and nonnitens, but usually the anterior parts
are less dull than the elytra and in americanus become decidedly
lustrous; in the male of blatchleyi the entire body is notably shining
though not polished. The sides of the prothorax are oblique to
the base, rarely becoming slightly sinuate before the basal angles,
and the base is about as wide as the apex, sometimes wider. The
last palpal joint is but little shorter than the third, though parallel,
with the apex truncate. The antennas are filiform and notably
long, often half as long as the body in the male. The inner and
outer thoracic foveae are widely separated as a rule, the lateral mar-
gin more or less broadly reflexed basally and finely so apically, and
not uniformly reflexed throughout the length as in the two pre-
ceding genera. The head is usually moderate in size, but some-
times becomes much larger as in enormis. The species at present
known to me may be described as follows:

Sides of the prothorax subevenly oblique to the basal angles from behind

the middle 2

Sides becoming briefly and feebly sinuate just before the basal angles. 7
2 — Legs bright red. Body elongate subparallel, only feebly convex, deep
black, but little less black beneath; upper surface shining, the elytra
opaque in both sexes; head slightly elongate, four-sevenths as wide
as the prothorax, the eyes very moderate and but slightly prominent;
sulci slightly sinuous; mandibles smooth externally; antennae ob-

PTEROSTICHIN.E 359

scure rufous throughout; prothorax scarcely more than a fourth wider
than long; base broadly sinuate except laterally, equal in width to
the still more sinuate apex, the nearly flat border of the latter de-
fined by an entire and deeply incised line; sides very evenly arcuate
from apex to base, broadly reflexed basally, the basal angles obtuse
and blunt; stria not entire, very deep at its posterior end; impres-
sions just traceable, the posterior having a deep rounded depression
near each inner fovea; surface with sparse transverse ruguliform
lines; foveae confluent; carina distinct, distant from the reflexed
sides; scutellum small, transversely triangular, smooth; elytra three-
fourths longer than wide, barely a fourth wider than the prothorax;
,sides broadly arcuate, the sinus very feeble; striae finely, deeply
incised, with deep and conspicuous punctures, slightly crenulating
the just visibly convex intervals; scutellar stria wanting, the mar-
ginal nearer the eighth than the margin. Length (cf 9 ) 14.0-16.5
mm.; width 4.8-5.7 mm. Missouri (St. Louis) and Iowa (Keokuk).

rubripes n. sp.

Legs black to piceous 3

3 — Sides basally only narrowly reflexed and broadly, just visibly sinuate

to straight, though not at all constricted 4

Sides of the prothorax rather broadly reflexed and arcuate, not straight

or feebly sinuate basally, the conformation as in rubripes 5

4 — Body slightly ventricose, moderately convex, deep black, the elytra
opaque, the anterior parts slightly shining; head more polished, nearly
three-fifths as wide as the prothorax, the eyes rather prominent; man-
dibles striate only internally behind the middle ; antennae slender, fer-
ruginous distaily; prothorax not quite a third wider than long; base
and apex equal, the apex broadly, the base medially, sinuate; anterior
margination defined by an entire and deeply incised line; sides a little
straighter basally; transverse impressions feeble, small, the depres-
sion just inside the inner foveae deep; foveae widely separated; carina
rather obtuse; elytra one-half to two-thirds longer than wide and
a fifth to two-fifths wider than the prothorax, the subapical sinus
barely traceable; strial punctures and intervals nearly as in the pre-
ceding, the marginal stria very close to the eighth and the scutellar
obsolete. Length (3d71, 69) 14.5-17.5 mm.; width 5.2-6.6 mm.
Indiana. Levette collection; also received from Mr. Blatchley

under the name orbatus sigillatus Say

A — Similar to sigillatus but flatter and much more parallel, the pro-
thorax relatively larger and subequal in width to the elytra, with
the incised line parallel to the apical margin very much finer and
feebler; surface more broadly impressed at the foveae, which are
therefore individually less deep, the depression near the inner
feeble and diffuse; oblique sides basally feebly arcuate, not be-
coming so straight as in sigillatus; other characters nearly similar.
Length (d71) 15.7 mm.; width 5.35 mm. Indiana.

parallelus n. subsp.

Bod y still less ventricose and more parallel, moderately stout, the anterior
parts relatively a little larger than in sigillatus, the surface less
opaque, distinctly shining in the male; color deep black through-

360 MEMOIRS ON THE COLEOPTERA

out; head unusually large, though only about three-fifths as wide as
the prothorax; eyes very prominent; sulci deep, parallel and slightly
contorted; antennae long and fusco-testaceous, nearly black basally;
prothorax large, a third wider than long; base somewhat wider than
the apex, the incised line behind the latter coarse, deep and entire;
sides broadly, subevenly rounded throughout, becoming just visibly
sinuate posteriorly, the basal angles obtuse but rather well defined;
surface very smooth, nowhere punctate; posterior transverse im-
pression distinct and lineate, entire, gradually deeper toward the
foveae, the latter very deep, transversely united by a very coarse
deep impression extending from the inner to the outer; carina strong,
at some distance from the margin; scutellum longitudinally plicate
at base; elytra two-thirds longer than wide, only about a fifth wider
than the prothorax, not differing much in the sexes; striae slightly
impressed, not very fine and very distinctly punctate, the punctures
rapidly obsolescent behind the middle, the scutellar wanting; inter-
vals not quite flat in either sex. Length (cf 9 ) 17.0-17.5 mm.;
width 6.0-6.35 mm. Florida (Dunedin), — W. S. Blatchley. Three

examples, sent under the name americanus Dej blatchleyi n. sp.

5 — Sides of the prothorax broadly, very obtusely subangulate medially;
base distinctly wider than the apex. Body much more abbreviated
than in the preceding and more convex, almost similar in coloration
and lustre; head fully three-fifths as wide as the prothorax, shorter
than wide, the eyes rather prominent; sulci coarse, feebly converging;
antennae blackish basally, very gradually ferruginous distally; pro-
thorax not quite a third wider than long; base sinuate in about
median third; apex sinuate, the incised line delimiting the border
deep; sides finely reflexed in apical, rather broadly in basal, half;
basal angles obtuse, rounded; impressions obsolete, the depression
near each inner fovea distinct; foveae rather short, deep, well separ-
ated, the intervening surface transversely concave; carina strong,
not far distant from the sides; elytra short, scarcely one-half longer
than wide, fully two-fifths wider than the prothorax; sides arcuate,
the sinus very distinct although not deep; striae and punctures
nearly as in sigillatns; punctures traceable nearly to the apex,
the scutellar stria wanting, the marginal extremely close to the
eighth; intervals nearly flat. Length (9 ) 15.0 mm.; width 5.7 mm.

North Carolina (Southern Pines), — Manee breviformis n. sp.

Sides of the prothorax evenly arcuate 6

6 — Body rather slender and subparallel (d71), stouter and more ventri-
cose ( 9 ), in color and lustre nearly as in sigillatns, somewhat smaller
in size; head moderate, four-sevenths as wide as the prothorax, the
eyes moderate in size and prominence; sulci and antennae as usual;
prothorax a fourth wider than long, somewhat more ( 9 ) ; base sub-
equal to the apex and broadly sinuate except laterally; apex rather
deeply sinuate, the incised line deep and entire; impressions obsolete,
the depression near each inner fovea deep and distinct; foveae not
very widely separated, rather short, very deep, shallowly confluent,
the carina short, distant from the sides; basal angles obtuse, the
tips blunt though anguliform; elytra three-fifths or more longer than

PTEROSTICHIN^; 361

wide, barely visibly (cf ) or a fourth (9 ) wider than the prothorax,
the striae not coarse but rather strongly punctate and unusually im-
pressed, the scutellar wanting as usual in this genus; intervals feebly
convex. Length (cf) 13.5-15.0, (9) 14.5-15.5 mm.; width (of1)
4.5-5.0, (9) 5-3-5-9 mm. Indiana, Iowa, Missouri, Kansas and
Arizona seximpressus Lee.

Body larger and much stouter, especially in the female, and with rela-
tively much larger prothorax in both sexes; coloration and lustre
nearly as in the other species, the elytra opaque in both male and
female as usual, the anterior parts rather strongly shining; head
better developed, three-fifths to two-thirds as wide as the pro-
thorax, the eyes moderate in size but rather prominent; sulci sinu-
ous, slightly converging; antennae as usual; prothorax a fourth wider
than long; base broadly sinuate except laterally and just visibly
wider than the apex, the incised anterior line deep and entire; stria
extending from the incised line to the base and rather fine, coarser
subbasally; impressions obsolete, the depression near the inner foveae
diffuse and transversely sublineate; foveae linear, moderate in length,
widely separated, joined transversely submedially by a feeble depres-
sion, which is acutely lineate at the bottom ; carina distinct, rather dis-
tant from the sides; elytra more oblong-oval than usual, one-half
to three-fifths longer than wide, a fifth to sixth wider than the pro-
thorax, the moderate striae rather sharply incised, the punctures
deep and rather small but nearly as in the other species, the scu-
tellar stria wanting; intervals very feebly convex (cf), flat (9).
Length (cf 9 ) 16.0-17.5 mm.; width 5.8-6.8 mm. North Carolina
(Southern Pines), — Manee. Four examples americanus Dej.

7 — Form stout and with dull lustre throughout in the female, the elytra
opaque; body and legs deep black; head larger, two-thirds as wide
as the prothorax, the eyes rather large and prominent; sulci acutely
very deep, parallel but contorted; antennae fusco-testaceous, the
four basal joints black, the first three glabrous as usual; mandibles
striate only internally; prothorax two-fifths wider than long; base
broadly sinuate except at the sides, equal in width to the more feebly
sinuate apex, the margination broad, the incised line deep, entire
and more arcuate than usual; sides finely reflexed anteriad, broadly
posteriad, evenly arcuate to the small and feeble oblique basal sin-
uation, the angles more than right; ruguliform lines of the surface
few and faint, wanting basally; transverse impressions obsolete, the
posterior visible near each inner fovea in a small depression as in
seximpressus; inner fovea very deep and briefly sublinear, the outer
short, rectangularly inflexed at base, the carina moderate, rather
distant from the margin; scutellum very broad, finely rugose; elytra
oblong-suboval. one-half longer than wide, a third wider than the
prothorax; sides feebly arcuate, the sinus broad but distinct; humeral
ridge pronounced; striae rather fine, distinctly impressed throughout,
the punctures well spaced, very deep and distinct though not coarse;
intervals very slightly convex, the marginal stria very close to the
eighth; prosternum deeply sulcate. Length (9) 20.5 mm.; width
7.3 mm. Texas (Houston) enormis n. sp.

362 MEMOIRS ON THE COLEOPTERA

Form less convex, extremely dull or opaque, black; elytra (9) entirely
without lustre, flat; prothorax wider than long, rounded and rather
strongly margined on the sides, which are very shortly sinuate be-
hind; hind angles rectangular; base not narrower than the apex, the
anterior impression [perhaps the incised subapical line is intended]
deep, hind one well marked; foveae deep, bistriate, with a short ex-
ternal carina; elytra oval, scarcely wider than the prothorax; humeri
broadly rounded; tip scarcely sinuate; striae fine, punctured; mar-
ginals not approximate; interspaces broad and flat, third with the
usual puncture; prosternum very deeply sulcate. Length 18 mm.
Louisiana (Red River) nonnitens Lee.

The species named enormis above I had labeled nonnitens in my
collection for many years, but a recent inspection of the original
description of nonnitens, of which a virtual transcription is given
in the table, shows that this identity is improbable. The elytra
are notably wider than the prothorax in enormis and by no means
flat, the marginal stria close to the eighth and the subapical sinus
is distinct. The posterior transverse thoracic impression is obso-
lete, except in a depression at each side near the inner fovea, as
pronounced a feature here as it is in seximpressus, where it served
to suggest the name given by the describer; it is distinct also in
almost all the other species. As the unique original type of non-
nitens was also a female, these comparisons seem to indicate that
enormis is a different though allied species.

I am unable to identify the species described by Chaudoir (Rev.
Mag. Zool., 1868, p. 52) under the name Evarthrus acuminatus,
and no reference to it appears in the work of LeConte. It is com-
pared with seximpressus, but the basal parts of the prothorax ac-
cord better with the genus Megasteropus where, however, the acu-
minate elytra described in acuminatus, are not apparent. Only an
inspection of the type can decide where it belongs.

It is possible that the incised line along the apical thoracic mar-
gin, well developed in all the species, though finer in parallelus, may
have been alluded to sometimes as the anterior thoracic impres-
sion. The true anterior transverse impression is always feeble and
more diffuse, lying well behind this incised line when it is present
at all;. it is usually completely obsolete in Evarthrus, though fre-
quently distinct in Anaferonia.

PTEROSTICHIISLE 363

Monoferonia n. gen.

The male of Evarthrus mancus Lee., from Habersham Co., Geor-
gia, has, according to the original description, a small transverse
tubercle near the apex of the last ventral segment. In describing
Evarthrus diligendus, Chaudoir states that the last ventral of the
male has a transverse ovulate excavation near the posterior mar-
gin, nothing being said of any tubercle or ridge. In Pterostichiis
osculant Csy., the last ventral of the male has a large deep trans-
verse excavation at tip, occupying nearly half the entire length and
bounded anteriorly by an even transverse ridge, more than half as
long as the entire width of the segment in line with it. We have,
therefore, three obviously different characterizations for the male
abdominal modification in this genus. Unless Chaudoir over-
looked the transverse ridge or tubercle, he was therefore probably
mistaken in considering his diligendus the same as mancus. Le-
Conte's description makes no mention of any excavation, the an-
teriorly bounding transverse ridge of which in oscnlans could not
be called a tubercle in any sense. It now seems to me, in view of
these facts, that it would probably be well to maintain all three of
these species as distinct until actual comparisons can be made, the
appalachius of Horn being, in any event, a synonym of osculans
(Mem. Col., IV, 1913, p. 132). In mancus LeConte states that,
besides the longitudinal fovea, the pronotum has at the posterior
angles an oblong puncture. In osculans there is, besides the elon-
gate and wholly discal impressed fovea, a small arcuate impressed
line, inwardly flexed basally, and a third as far from the sides as
from the fovea, not closely approaching the angle and not resem-
bling in any way an oblong puncture. The arcuate line of oscu-
lans, just mentioned, is widely and wholly detached from the elon-
gate fovea, so that the following language used by Chaudoir, in
regard to diligendus, could not apply: "de chaque cote de la base
un sillon profond, qui s'arrete au tiers de la longueur et qui remonte
en crochet le long de la base et du bord lateral, ou il est oblitere."
It can be seen from this, however, that osculans is probably more
closely allied to diligendus than to mancus; it is probably from
somewhere in the Altantic regions of the continent and not more
western, as originally surmised by the writer.

364 MEMOIRS ON THE COLEOPTERA

Ferestria Leng

The very small species separated under this name by Mr. Leng
(Bull. Am. Mus., XXXIV, p. 576) were placed at first in Broscus
and later in Evarthrus by LeConte. They present a singularly
distinct appearance, due to their small size, Anaferonia-like habitus
and largely effaced elytral striae. The single thoracic foveae are
shorter and relatively more deeply excavated than in any other
genus, and the posterior thoracic angles are very obtuse and rounded,
though in some species there is a minute acute prominence at the
position of the posterior marginal puncture. In obsoleta Say, the
position of this puncture is discordant, it being at a considerable
distance in front of the hind angles. In morio Dej., the almost
universal lateral reflexed margin of the prothorax is completely
obsolete behind about the middle and, anteriorly, is very fine and
barely observable. The following species is hitherto undescribed:

Ferestria nanula n. sp. — Moderately ventricose, convex, polished, deep
black, the legs rufo-piceous; head more than two-thirds as wide as the
prothorax; eyes moderately prominent, the sulci very widely separated,
slightly converging; antennae rather short and thick, piceous; prothorax
nearly one-half wider than long, the sides finely but strongly, equally
margined throughout, parallel and feebly arcuate, very rapidly and arcu-
ately oblique posteriorly, the obtuse angles with a minute acute external
projection; base sinuate except laterally, slightly wider than the peduncle
of the hind body and but little more than half the maximum width; apex
only just visibly sinuate, the anterior incised discal line distinct and en-
tire; stria fine, even, not quite attaining the base; surface very smooth,
the transverse impressions scarcely traceable, the foveae small, slightly
oblique and very deep; posterior marginal puncture coarse, at the basal
angles; elytra oval, not quite one-half longer than wide, a fourth wider
than the prothorax; marginal stria forming the outer limit of the row of
relatively very coarse ocellate punctures; striae wholly obsolete, except-
ing vestiges of the first four or five, which are feebly and indefinitely
punctulate; dorsal puncture barely at all behind the middle; abdominal
sutures very coarse, ending at each side in a coarse sublateral fovea;
anterior tarsi scarcely more dilated in the male. Length (cf 9 ) 8.5-10.0
mm.; width 3.3-3.6 mm. Alabama (Mobile), — Loding.

The very slight differences in the anterior tarsi among the four
examples at hand, renders it somewhat doubtful if both sexes be
really included. The abdominal surface is very smooth through-
out in this genus, but the sutures are unusually coarse.

PTEROSTICHIN/E 365

Feronina n. gen.

The species described by Schaeffer under the name Pterostichus
palmi, of which I have an apparently typical specimen, sent by
Mr. Beutenmiiller and taken in the Black Mts. of North Carolina,
presents no very marked peculiarities of habitus and would not be
considered as the type of a separate generic group, were it not for
the sake of consistency in basing genera to great degree upon the
number of discal punctures of the elytra. The type was compared
with lubricus Lee., by the author, but there is apparently no close
affinity between the two. Though less convex, palmi greatly re-
sembles the genus Monoferonia in the general outline of the body
and in the single elongate pronotal foveae, but differs not only in
having two discal punctures on the elytra, but in the long and dis-
tinct scutellar stria and in having the lateral series of ocellate fovese
widely interrupted at the middle. My single specimen is a female,
so that it is impossible to describe the ventral apex in the male for
comparison with Monoferonia or with Pterostichus lubricus, forming
the type of Paraferonia further on. Mr. Schaeffer states that in
the male of palmi the last ventral segment is not carinate at the
middle, and presumably there is also no impression.

Euferonia n. gen.

The rather numerous species of this genus form the most abun-
dant and conspicuous Pterostichid element of the Atlantic regions
of North America; they are usually rather large in size, of a very
polished deep black coloration in both sexes, convex upper surface
and deep elytral striation, the scutellar stria very long, sulciform
and conspicuous throughout. The thoracic apex is constantly with-
out trace of the transverse incised line of the Evarthrids. The
species are rather closely allied among themselves, so that LeConte
in later years and with constantly increasing supply of material,
was disposed to give them up in despair, uniting several of his ear-
lier species in synonymy with coracinus. The species form two
distinct subgeneric groups as follows:

Prothorax relatively large, the sides rounding to the obtuse basal angles,
the foveae double or bistriate, frequently confluent Group I 2

Prothorax relatively smaller, the sides feebly sinuate before the distinct
basal angles, the fovese long and single Group II II

2 — Carina near the hind thoracic angles obsolete. Body not very stout,
convex; head two-thirds as wide as the prothorax, with prominent

366 MEMOIRS ON THE COLEOPTERA

eyes, the sulci moderately separated, arcuate and slightly converg-
ing; antennae rather long, obscure ferruginous; prothorax a fifth
wider than long, widest at anterior two-fifths; base feebly sinuate
medially, arcuate laterally, narrower than the apex and three-fourths
the maximum width; sides broadly reflexed, arcuate, oblique and
straighter basally, the basal angles broadly rounded; foveae united,
forming a feebly punctured concavity; scutellum narrowly triangu-
lar, as long as wide; elytra two-thirds longer than wide, two-fifths
wider than the prothorax; striae deep, with the bottom extremely
finely punctulate, the marginal nearer to the sides than to the eighth
stria; intervals very convex. Length (cf1) 15.0 mm.; width 5.4 mm.

Indiana. [Pt. protensus Lee.] relicta Newm.

Carina very distinct 3

3 — Pronotal foveae separated . " 4

Pronotal foveae coalescent, forming a large deep concavity, with the bot-
tom punctate and usually almost even 8

4 — Prothorax more trapezoidal, the base distinctly narrower than the
apex, with the longer foveae separated by a wide and nearly flat de-
pressed surface; antennae longer, almost half as long as the body.
Rather stout but only moderately convex; head three-fifths as wide
as the prothorax, with prominent eyes and very broadly impressed
sulci; prothorax a sixth wider than long, widest well before the mid-
dle, the base nearly truncate; sides broadly reflexed, straight bas-
ally, the angles broadly obtuse and rather rounded; carina moder-
ately strong, long, outwardly arcuate; elytra two-thirds longer than
wide, two-fifths wider than the prothorax, gradually broadening
and with feebly arcuate sides to behind the middle; striae very deep,
the punctulation at the bottom extremely fine; intervals very con-
vex. Length (9 ) 18,0 mm.; width 6.4 mm. North Carolina (Ashe-

ville) proba Csy.

Prothorax less trapezoidal, about as wide at base as at apex, the sides
more evenly arcuate; foveae separated by a pronounced elevation,
which becomes obsolete posteriorly; antennae not quite so long. . . .5
5 — Prothorax subquadrate, but little narrower at base than anteriorly.
Body rather narrow, elongate, convex, deep black and polished;
head three-fifths as wide as the prothorax, with prominent eyes;
sulci coarse, parallel; antennae rather long and slender, ferruginous,
blackish basally; prothorax scarcely visibly wider than long; base
nearly five-sixths the maximum width, feebly sinuate medially, ar-
cuate laterally; apex very feebly sinuate; sides coarsely reflexed,
feebly arcuate, slightly less so basally, the angles very broadly ob-
tuse; transverse impressions diffuse and feeble, the stria subentire;
foveae linear, the intervening depression shallow, with a longitudinal
convexity ending before the base; carina short, distant from the
margin; elytra three-fourths longer than wide, nearly a third wider
than the prothorax; striae very deep, the minute punctules at the
bottom scarcely visible and widely separated, the marginal nearer to
the edge than to the eighth; intervals very convex; posterior sinus
distinct. Length (cf) 14.5 mm.; width 4.8 mm. Ontario.

quadrifera n. sp.

PTEROSTICHIN/E 367

Prothorax much narrower at base than before the middle 6

6 — Body small, abbreviated, the elytra but little longer than the head
and prothorax, the striae not punctulate. Convex, deep black;
head two-thirds as wide as the prothorax, with prominent eyes;
prothorax slightly wider than long, the transverse impressions dis-
tinct; sides not so coarsely reflexed as usual, rounded anteriorly,
less so posteriorly, the angles very obtuse; linear fovese separated
by a longitudinal convexity; carina distinct, very close to the edge;
elytra evidently less than one-half longer than wide, a fourth wider
than the prothorax, rounded at the sides, with subobsolete pos-
terior sinus; striae rather coarse, deep, the intervals somewhat
strongly convex. Length (cf) 12.7 mm.; width 4.7 mm. New
York (Adirondack Mts.) vapida Csy.

Body larger, more elongate, the elytra nearly one-half longer than the
head and prothorax, the striae minutely punctulate along the bot-
tom 7

7 — Body less stout, moderately large and convex, polished black; head
well developed, three-fifths as wide as the prothorax, with prom-
inent eyes and converging sulci; prothorax a fourth or fifth wider
than long; base more than three-fourths the maximum width; apex
rather deeply sinuate; sides coarsely reflexed, evenly rounded, a
little less so basally, the angles broadly obtuse and blunt; trans-
verse impressions very feeble; fovese deep and coarse, divided by a
longitudinal convexity not attaining the base, the concavity punc-
tate; carina short, not strong and not very far from the margin;
elytra two-thirds longer than wide, a fourth wider than the pro-
thorax; sides arcuate and well reflexed, the sinus not very long and
rather distinct; striae very deep, the intervals strongly convex.
Length (cf 9 ) 14.0-16.5 mm.; width 5.0-5.7 mm. New York and
Pennsylvania to Indiana. Abundant. [Pt. bisigillatus Harris and
rugicollis Hald.] stygica Say

Body larger and broader, black, polished; head a little larger, the eyes
and sulci nearly similar; antennae similar in coloration but distinctly
longer, especially the third joint in both sexes; prothorax larger and
broader, fully a fourth wider than long, the base fully as wide as
the sinuate apex and four-fifths the maximum width; sides broadly
and deeply reflexed, especially basally; impressions feeble; deep
linear foveae separated by a broad subtriangular rugose convexity,
not attaining the base; elytra broader, only three-fifths longer than
wide, a fourth to fifth wider than the prothorax; sides arcuate, the
gutter deep, the sinus very broad and feeble; striae deep, the
marginal deeply impressed, nearer to the sides than to the eighth;
minute punctulation at the bottom of the striae sharply defined
and rather close-set; intervals strongly convex; metasterna, and the
abdomen latero-basally, usually more conspicuously punctate than
in stygica. Length (cf 9) 15.4-17.5 mm.; width 5.8-6.3 mm. In-
diana, Illinois, Iowa and Missouri. Six specimens. . . .ingens n. sp.

Body smaller than in stygica and rather more anteriorly narrowed, deep
black, polished; head moderately large, with prominent eyes and
converging sulci; antennae nearly as in stygica; prothorax smaller,

368 MEMOIRS ON THE COLEOPTERA

the base almost rectilinearly transverse, rounding at the sides, three-
fourths the maximum width; sides coarsely reflexed, rounded, rather
straighter basally, the angles broadly rounded; surface with the
ruguliform lines rather distinct, the transverse impressions unusually
pronounced; concavity formed by the united foveae deep, rather
broadly rounded, the bottom subrugose and punctured as usual,
but differing from the stygica type in having an isolated central
convexity, everywhere widely separated from the sides and ends of
the concavity; carina strong though obtuse, not very close to the
sides; elytra three-fourths longer than wide, somewhat posteriorly
inflated, a third to two-fifths wider than the prothorax, the sinus
distinct; striae deep, the punctulation very fine; intervals very con-
vex. Length (cf 9 ) 14.5-15.0 mm.; width 5.0-5.35 mm. Rhode
Island (Boston Neck) umbonata n. sp.

Body more parallel than in any of the three preceding, very nearly as in
flebilis Lee., deep black, shining; head slightly elongate, with mod-
erate but prominent eyes, three-fifths as wide as the( prothorax;
palpi pale, very slender, the fourth joint much shorter than the third;
antennae extending a little behind the thoracic base, ferruginous, pice-
ous basally, the outer joints on the narrow side very slender basally
and very feebly dilated apically; prothorax larger than in any of the
three preceding, being barely visibly narrower than the elytra, just
visibly wider than long, widest slightly before the middle, the sides
subevenly rounded and coarsely reflexed to the very obtuse and
blunt, though evident, basal angles; base about equal in width to
the deeply sinuate apex and four-fifths the maximum width; foveae
rugose, deep, coalescent posteriorly, the separating surface feebly
convex; carina rather short and not very high; elytra three-fourths
longer than wide, subevenly rounded behind, parallel, with very
feebly arcuate sides; striae deep, the punctulation along the bottom
minute, the scutellar free at tip; intervals strongly convex; tarsi
ferruginous. Length (cf ) 15.0-15.5 mm.; width 5.2 mm. Indiana.
Levette collection subaequalis n. sp.

8 — Thoracic foveal cavity moderately deep, its rugosely punctate floor
nearly flat 9

Thoracic foveal cavity very deep and concave 10

9 — Body rather stout, strongly convex, deep black and polished; head
well developed, the eyes prominent; sulci broadly and deeply im-
pressed, slightly converging; antennae rather long; prothorax nearly
a fourth wider than long; base sometimes not quite as wide as the
apex, which is rather deeply sinuate; sides rounded anteriorly, more
oblique but still distinctly arcuate basally, very coarsely reflexed;
angles very obtuse and rounded; transverse impressions feeble but
evident, the stria deep, entire; foveal depression a fourth the total
length and more than a fourth the width; carina long and strong,
approaching close to the edge basally; elytra feebly subposteriorly
inflated, two-thirds longer than wide, a fourth wider than the pro-
thorax; striae very deep, vestigially punctulate, the intervals con-
spicuously convex; subapical sinus very feeble. Length (cf 9 ) 14-°
-17.0 mm.; width 5.0-6.0 mm. Lake Superior to Lake Champlain

PTEROSTICHIISLE 369

and southward to Pennsylvania. Less abundant, larger and stouter
than stygica. [Pt. ni&rens Newm.] coracina Newm.

Body narrower and more elongate, similar in color and lustre, but with
the strial intervals less convex and the two dorsal punctures much
coarser; head less broad, the eyes evidently not so large, the sulci
shorter and parallel ; prothorax less dilated anteriorly and very nearly
as long as wide, the sides coarsely reflexed, especially behind, and
subevenly arcuate throughout; basal angles very obtuse but not more
than blunt; impressions, fovese and carina subsimilar; base fully as
wide as the apex; elytra relatively narrower, fully three-fourths longer
than wide, nearly a fourth wider than the prothorax, the sinus very
long and barely traceable; strial punctulation extremely minute.
Length (c?) 15.5 mm.; width 5.3 mm. Pennsylvania, .flebilis Lee.

10 — Form rather narrower and more elongate than in coracina and with
relatively smaller prothorax, the coloration and polished lustre sim-
ilar; head larger, almost three-fourths as wide as the prothorax, the
eyes similarly large and prominent and the broadly impressed sulci
slightly converging; prothorax but very little wider than long; base
as wide as the apex, broadly arcuate laterally, the angles blunt and
very obtuse; sides arcuate, lesS so posteriorly, not quite so coarsely
reflexed as in the two preceding, the transverse impressions distinct;
carinse coarse, irregular, subadjacent to the sides posteriorly; elytra
nearly as in coracina but narrower, nearly three-fourths longer than
wide, a third to fourth wider than the prothorax; punctulation of
the very deep striae obsolete; intervals very convex; sinus feeble but
distinct. Length (cf) 13.8-16.8 mm.; width 4.8-5.8 mm. Penn-
sylvania and New York (Adirondacks) adjuncta Lee.

Form still narrower, smaller in size, deep black and polished; head well
developed but not so large as in the preceding, the eyes prominent;
sulci broadly impressed and parallel; antennae moderately long;
prothorax a fifth wider than long; base scarcely as wide as the apex;
anterior impression deep, the posterior rather feeble and more diffuse,
widest before the middle as usual, the sides coarsely reflexed and
arcuate throughout, less so basally, the angles very broadly rounded;
foveal cavity very deep, longer than wide, only feebly rugose, the
carina strong, almost adjoining the margin posteriorly; elytra with
more broadly exposed and more rapidly rounding humeri than in
any of the preceding, three-fifths ( 9 ) to three-fourths (c?) longer
than wide, a fourth to third wider than the prothorax; punctulation
of the very deep striae virtually wanting, the intervals very convex;
sinus rather short and distinct. Length (cf 9 ) 14.0-15.7 mm.;
width 4.8-5.3 mm. Lake Superior (Bayfield and Marquette).

erebea Csy.

II — Form elongate, not very stout, somewhat attenuated anteriorly,
deep black, shining; head well developed, not quite three-fourths as
wide as the prothorax; eyes moderate but prominent, the sulci
feebly converging; antennae fully half as long as the body in the male;
prothorax relatively smaller than in most of the preceding species,
only slightly wider than long, widest anteriorly, the sides coarsely
T. L. Casey, Mem. Col. VIII, Oct. 1918.

37Q MEMOIRS ON THE COLEOPTERA

i

reflexed, arcuate; slightly oblique and straight, becoming faintly
sinuate, posteriorly; angles rather blunt, though slightly prominent;
base sinuate medially, arcuate and margined laterally, distinctly
narrower than the very feebly sinuate apex; surface with widely
separated ruguliform lines; impressions distinct, the anterior angu-
late; fovea linear, deep, finely punctate, extending beyond basal
third, not attaining the base; elytra oblong-oval, convex, three-
fourths longer than wide, two-fifths (cf ) to fully one-half (9 ) wider
than the prothorax; sinus long and very feeble; striae deep, impunc-
tate, the scutellar similarly deep, long, the marginal impressed and
medial, evident only in apical half; intervals very convex. Length
(cf 9 ) 14.5-17.0 mm.; width 5.0-5.9 mm. Massachusetts, New
York (Adirondack Mts.), New Jersey and Pennsylvania.

lachrymosa Newm.

The only species apparently entering this genus and which is
unknown to me, is agona Horn ; it is only 10 mm. in length, with red
femora and very broadly rounded thoracic angles and occurs in
Alaska. There are two forms at hand so close to coracina that I
feel indisposed to name them at present; coracina occurs in typical
form from Lake Superior to New York. One of the allied forms is
larger and more elongate than typical coracina and is represented
by three examples from Danville, Pennsylvania, the other is very
much smaller, as shown by the smaller measurements given above,
and was found by the writer at Buena Vista Spring, in the same
state.

Refonia n. gen.

The type of this generic group was placed by LeConte in the
same section as coracina, stygica and others, forming the preceding
genus, but there are some features that indicate no very close affin-
ity, although others may suggest this rather strongly, such as the
long antennae, the thoracic structure and, especially, the coarsely
reflexed side margins. The form of the body is shorter, broader
and less convex than in any Euferonia, but one of the chief dis-
tinguishing points is the opaque elytra, at least in the female, a
decidedly Evarthrid character. Three other important differences
reside in very much larger head, longer, straighter and more prom-
inent mandibles and the four dorsal punctures of the elytra. The
very large thoracic depressions bear no indication of their origin
through the confluence of two foveae; they are roughly rounded,
punctate and their outer wall is the broadly reflexed side margin,

PTEROSTICHIN^; 371

there being no trace whatever of the usual carina. The scutellar
stria is well developed. Besides mcssta Say, the type of this genus,
I know of no other species that can be included at present. How-
ever, in the LeConte table of Pterostichus, the species superciliosus
Say, which is unknown to me, has apparently, by the context, four
discal elytral punctures as in mcestus, but is said to have the tho-
racic angles carinate, the color purple and the surface shining; it is
uncertain how close may be its affinities with Refonia mcesta.

Abacidus Lee.

This genus will include species of the fallax section, besides per-
mundus, planifer and hamiltoni. It seems to be a valid generic
group, the species having a strongly defined and isolated habitus.

Gastrosticta n. gen.

The chief distinguishing characteristics of this genus are the small
size of the body, very polished integuments, pedunculated hind
body, obsolescent lateral striae of the elytra, the three dorsal punc-
tures and the conspicuous coarse punctuation of the lateral parts of
the abdomen, besides some mentioned in the above table of genera.
The scutellar stria is wanting or extremely short. There are two
distinct sections as follows:

Body more nearly parallel, the single pronotal foveae very nearly longi-
tudinal ; hind thoracic angles apparently always obtuse and rounded . 2

Body shorter, more ventricose, the foveae very oblique, deeper and
shorter; hind angles less blunt, sometimes minutely and acutely
prominent 5

2 — Base of the prothorax but very little wider than the peduncle of the
hind body 3

Base of the prothorax very distinctly wider than the peduncle 4

3 — Body above black, polished, beneath piceous-black; antennae piceous,
with ferruginous hairs towards the tip; labrum deep piceous; palpi
piceous; thorax before the middle as broad as the elytra, gradually
much contracted behind; base hardly wider than the pedicel; lateral
margin not depressed; edge not excurved behind; dorsal line slightly
impressed; basal lines distinct, conspicuously punctured; elytra nar-
rowed behind; striae punctured; interstitial lines hardly convex; pec-
tus impunctured; feet rufo-testaceous; postpectus and venter punc-
tured. Length rather more than two-fifths of an inch [say 10.5
mm.]. Missouri. [Feronia ventralis Say] ventralis Say

Body smaller, slender, pale testaceous in color, slightly darker beneath,
the legs testaceous; head rather narrow, with only feebly prominent
eyes; antennae testaceous; mandibles small, strongly arcuate; pro-

372 MEMOIRS ON THE COLEOPTERA

thorax only a fourth or fifth wider than long; base much narrower
than the apex, sinuate, barely wider than the peduncle; transverse
impressions rather deep, the anterior sublineiform; linear foveae with
but very few punctures; elytra but very slightly wider than the
prothorax and nearly four-fifths longer than wide, rather obtusely
rounded in apical third; striae very coarse, deep, rapidly fine at apex,
the punctures strong, close-set, crenulating the moderately convex
intervals; sixth stria but slightly less marked though becoming obso-
lete basally, the seventh subobsolete, although becoming deep api-
cally. Length (cf 9 ) 8.5-8.8 mm.; width 2.5-2.65 mm. Texas.
[Pterost. put us Csy.] puta Csy.

4 — Form stouter, strongly convex, deep black, the legs more piceous, the
tibiae and tarsi rufescent; head well developed, the eyes rather prom-
inent, the mandibles longer than in the preceding; antennae moder-
ate, slender, ferruginous; prothorax not quite a third wider than
long; base feebly sinuate, narrower than the rather deeply sinuate
apex; sides arcuate, less so and more oblique basally, the angles
broadly rounded; surface with a few obsolescent ruguliform lines
basally, the transverse impressions obsolete or very feeble; foveae
deep, with but few punctures, not attaining the base; elytra oblong-
oval, the sides rounding behind from near the middle, also rapidly
rounding at base, two-thirds longer than wide, evidently but not
greatly wider than the prothorax; striae deep, very obscurely or
scarcely at all punctured, the sixth and seventh fine and obso-
lescent; intervals convex internally, the scutellar stria completely
wanting. Length (tf 9 ) 10.3-10.5 mm.; width 3.3-3.6 mm. Indi-
ana,— W. S. Blatchley. [Feronia obscura Say] obscura Say

Form less stout and less convex, more parallel, polished, obscure testa-
ceous to piceous in color, the under surface and legs rufous; head
well developed, with rather prominent eyes, much broader than in
puta and with less arcuate mandibles, the sulci rather short, parallel;
antennae slender, pale ferruginous, nearly half as long as the body;
prothorax barely a fifth wider than long; base rather deeply sinuate,
distinctly narrower than the subequally sinuate apex; sides strongly
but not widely, subequally reflexed and arcuate, the gutter extend-
ing inward at base for some distance; transverse impressions subob-
solete; foveae rather long, deep, more or less punctate, the punctures
coarse; scutellum small, evenly triangular; elytra three-fifths longer
than wide, not a fifth wider than the prothorax, the sides gradually
rounding behind, rapidly at base, the sinus rather deep; striae coarse
and deep, not very coarsely, rather closely punctate, the sixth more
or less evidently less deep, the seventh very fine and subobsolete
except apically; marginal line distinct, rather nearer the edge than
to the eighth stria; scutellar stria very short but evident; intervals
strongly convex except laterally. Length (cf ) 8.4-8.8 mm.; width
2.8-3.0 mm. Missouri (St. Louis) amnicola n. sp.

5 — Body rather stout, strongly convex, polished, deep black above and
below, the epipleura and legs rufous; head three-fifths as wide as
the prothorax, somewhat elongate, the eyes only moderately prom-
inent; sulci converging; mandibles short and arcuate; antennae

PTEROSTICHIN/E 373

scarcely extending to the thoracic base, dark ferruginous; prothorax
much wider at apical third than at apex, two-fifths wider than long,
the sides sharply but not broadly reflexed, strongly, evenly rounded
to the very small basal sinus, the angles right and minutely prom-
inent; base sinuate medially, margined in lateral third, much nar-
rower than the distinctly sinuate apex; anterior impression rather
deep and sublinear, the posterior obsolete; foveae smooth, very deep,
elongate-oval, discal; elytra two-thirds longer than wide, nearly a
fourth wider than the prothorax, the arcuate sides more rounded at
base, gradually arcuately converging in apical half; striae deep, not
coarsely but strongly and rather distantly punctate, obsolete at
apex, the fifth very feeble, sixth and seventh subobsolete through-
out; scutellar stria wholly wanting; intervals broadly convex inter-
nally; abdomen very coarsely, confluently punctured except medi-
ally. Length (9 ) 9.7 mm.; width 3.3 mm. Texas. . subacuta n. sp.
Body stout, very convex, smaller, black or piceous-black and polished;
under surface obscure, the legs brighter, rufous; head nearly as in
the preceding, the eyes larger and more prominent; prothorax al-
most perfectly similar throughout, except that the anterior trans-
verse impression is very feeble and diffuse, and that the hind angles
are obtuse and blunt, not in the least prominent; elytra similar in
form and proportion, the striae much coarser, very deep and coarsely
punctate, the fifth like the others, the sixth evidently feebler but
distinct, the seventh subobsolete, all subobsolete or feeble at apex;
scutellar similarly wholly wanting; intervals broadly and not very
strongly convex; abdomen less coarsely and more loosely punctate.
Length (9) 7-7 mm.; width 2.8 mm. Texas (Houston). Taken
by the writer. Louisiana — LeConte. [Pterost. tnmescens Lee.]

tumescens Lee.

The species named subacuta above, answers so closely to LeConte 's
description of his Evarthrus acutus — placed in Ferestria by Leng —
that I have for some time considered it to be identical, but on study-
ing this description more carefully, it may be inferred that in acutus
the head is large and obtuse, the antennae black basally and the
prothorax not at all narrowed at apex, which is scarcely emarginate.
Furthermore, in identifying it as Evarthrus acutus we should have
to assume that LeConte overlooked the three dorsal punctures of
the elytra, and also the very coarse confluent abdominal punctures
of subacuta. This must be admitted, however, to be a striking in-
stance of parallelism in two different generic groups.

Cryobius Chd.

The met-episterna in this genus, though short enough to distin-
guish the numerous components from the smaller forms of the Ar-

374 MEMOIRS ON THE COLEOPTERA

gutor series, are less visibly abbreviated than in any of the preced-
ing generic groups, in some cases becoming slightly elongate. The
species are so numerous, small in size and usually so poorly repre-
sented in collections, that Cryobius should be considered perhaps
the most difficult, taxonomically, of the subfamily Pterostichinae,
and my own collection includes but very few of the known compo-
nents. A large consignment, recently received from St. Paul Island,
in Bering Sea, includes five species, of which four seem worthy of
description at the present time as follows:

Cryobius otariidinus n. sp. — Elongate-suboval, convex, rather stout
and shining, with very obscure subcupreous lustre on the elytra, black
above and beneath, the legs dark rufous; head rather large and but feebly
convex, nearly three-fourths as wide as the prothorax, with very moder-
ate though prominent eyes, placed near the base, the neck very short;
mandibles black, rufous distally; palpi deep black with abruptly pale
tip; antennae rather thick and short, black, the first joint rufous to pice-
ous; prothorax nearly one-half wider than long, widest barely before the
middle, the sides rather strongly rounded, finely reflexed throughout,
oblique and broadly, feebly sinuate basally, the angles right and sharp;
base transverse, equal in width to the deeply sinuate apex, not margined
at the sides; apical angles prominent, blunt at tip; impressions feeble;
inner foveee deep, extending almost to the middle, curving outwardly
basally, the outer wanting or represented by a very small feeble basal
puncture; surface between the inner foveae and the sides evenly convex;
elytra one-half to three-fifths longer than wide, oval, with evenly arcuate
sides, a third or more wider than the prothorax, widest at the middle;
striae fine and feeble, unimpressed, with feeble but evident uneven punc-
tulation, the scutellar very short; intervals flat; dorsal punctures four,
the two posterior closer. Length (9 ) 8.0-9.0 mm.; width 3.2-3.35 mm.
Alaska (St. Paul Island). Two specimens.

By the characters given by LeConte, this species would come
near vindicatus Mann., but the first and second striae are not united
behind by a "deeper hook," and the scutellar stria is very short as
a rule, though in the second specimen, having slightly more elon-
gate elytra, it is long, forming the oblique basal part of the first
stria; vindicatus is from Kodiak Island.

Cryobius beringi n. sp. — Elongate, convex, shining, black, without
distinct metallic lustre, the legs piceo-rufous; head elongate, the eyes
moderate in size and prominence; maxillary palpi deep black, the extreme
tip abruptly pale testaceous; antennae black, the basal joint rufescent;
prothorax a third wider than long, the base feebly sinuate medially,
straight and unmargined laterally, about as wide as the moderately sinu-
uate apex, widest just before the middle, where the sides are feebly, sub-
prominently rounded, thence feebly converging and slightly arcuate to

PTEROSTICHIN,E 375

apex and slightly more oblique and broadly sinuate to the base, the mar-
gin sharply, evenly and not broadly reflexed; anterior impression deep,
the posterior obsolescent; inner fovea long, coarse and deep, attaining
base, the outer shallow, feebly punctate, delimiting a sharp carina along
the sides basally; elytra almost twice as long as wide, inflated and much
broader behind the middle, fully two-fifths wider than the prothorax;
striae fine, feeble or subobsolete externally, slightly impressed, distinct
and punctate internally, the scutellar moderately long but imperfect;
dorsal punctures two, just behind the middle and at apical fifth; female
with two apical abdominal punctures at each side. Length (9) 8.0
mm.; width 3.0 mm. Alaska (St. Paul I?land).

This is a remarkably distinct species in general habitus, because
of the unevenly rounded, basally broadly sinuate sides of the pro-
thorax and the long and posteriorly inflated elytra.

Cryobius delicatus n. sp.- — -Body very small, narrow and elongate,
deep black and polished, without metallic lustre; femora bright rufous,
tibiae piceous, the tarsi black; head moderate, short, with very prominent
eyes, the sulci rather long, converging; antennae black, piceous basally,
rather thick; palpi black, tipped with testaceous; prothorax fully a third
wider than long, widest well before the middle, the sides broadly arcuate
and very moderately converging anteriorly, arcuately oblique in nearly
basal half, sinuate behind, becoming subparallel before the angles; base
not margined laterally, slightly narrower than the apex, which is mod-
erately sinuate, with broadly rounded angles; anterior impression very
faint, angulate, the posterior obsolete; inner fovea linear, rather fine,
widely separated from the base, the surface thence laterally flat and feebly
punctulate to a short fine carina near the sides; elytra three-fourths
longer than wide and two-fifths wider than the prothorax, parallel, with
evenly arcuate sides; striae finely, feebly punctate, impressed internally,
very feeble externally, the scutellar very short; dorsal punctures fine,
four or five in number. Length (cf 9 ) 5-5-5-8 mm.; width 1.8-2.1 mm.
Alaska (St. Paul Island).

In the female the elytra are broader and more strongly arcuate
at the sides than in the male described above, but they are simi-
larly parallel and symmetrical.

Cryobius breviusculus n. sp. — Relatively shorter and broader than
any of the preceding, shining and piceous, more rufous beneath, the ab-
domen black; legs rufous throughout; head well developed, triangular,
with rather large but only moderately prominent eyes, the sulci parallel;
antennas thick, bright testaceous, gradually infuscate beyond the middle;
palpi ferruginous throughout; prothorax two-fifths wider than long,
widest at anterior third, where the sides are evenly rounded to the apex,
gradually less arcuate and oblique posteriorly and becoming gradually
broadly sinuate near the sharp right angles; base not margined laterally,
slightly less broad than the broadly sinuate apex, the apical angles not
very broadly rounded; transverse impressions both distinct though shal-

376 MEMOIRS ON THE COLEOPTERA

low; inner fovea long, linear, attaining the base, the outer linear, three-
fourths as long as the inner, the carina long, confluent with the sides at
the basal angles; intervening surface nearly flat, punctate; elytra oblong-
oval, not quite one-half longer than wide, a third wider than the protho-
rax, rather obtuse behind, the sinus deep and rather narrow; strise fine,
subequal throughout, barely at all impressed and feebly punctulate sutur-
ally, the scutellar nearly obsolete; intervals almost flat; marginal stria
fine, distinct, much nearer to the side than to the eighth, the ocellate
punctures very large, widely spaced medially. Length (9?) 7-3 mm.;
width 3.0 mm. Alaska (St. Paul Island).

The anterior tarsi are missing in the type of breviuscuhis, where
the abdominal apex has four punctures; the met-episterna are a
little longer than wide and the dorsal punctures of the elytra are
two in number, well behind the middle and near apical fifth. The
subapical sinus of the elytra is rather short and deep in beringi and
brevitisculus, but in delicatus it is longer and so feeble as to be barely
traceable; in the latter species there is one apical abdominal punc-
ture at each side in the male and two in the female.

I am unable to place any one of these species in the table given
by LeConte, but for the present they can come in just after vindi-
catus Mann. By far the largest series received in the lot mentioned,
amounting to some thirty-six specimens, consists of a species of
bright bronze lustre, with the thoracic sides evenly arcuate from
apex to the faint and gradual basal sinus, the base narrowly and very
obsoletely margined at each side and with slightly convex unmodi-
fied surface between the linear fovea and the sides, the elytral
striae distinctly impressed internally, with the scutellar rather long,
and the dorsal punctures three or four in number; it is probably
also allied to vindicates, but is different from any of those here
described.

Paraferonia n. gen.

Nothing is known to me concerning Pterostichus lubricus Lee.,
the type of this genus, except the meagre data so far published,
but I am disposed to think that is is placed above in a nearly cor-
rect position in the series; its resemblance to Piesmus is probably
purely superficial, however, and I assume that the met-episterna
are short.

Poecilus Bon.

The probabilities are that the species described by the writer
under the name snowi (Mem. Col., IV, 1913, p. 137) is the same as

PTEROSTICHIN^: 377

mexicanus Chd. (1'Abeille, 1875, p. 44). At all events, the char-
acters given by Chaudoir to distinguish his mexicanus from cyani-
color Chd. (cyaneus \\ Lee.) fit snowi very well; that is: it is much
larger than cyanicolor, similar in coloration and with a notably more
elongate prothorax. Mexicanus is said by Bates to occur at Gua-
najuato and Oaxaca; snowi was described from extreme southern
Arizona.

Dysidius Chd.

This genus is very exceptional among the allies of PterosticJms in
having male sexual characters recalling those of Amara, but here
the pubescence on the inner side of the posterior male tibiae is of a
somewhat different character, being coarser and erect. Besides
mutus Say, the genus will include purpuratus Lee., and the follow-
ing varietal form :

Dysidius purpuratus ssp. trinarius nov. — Similar in almost every way
to purpuratus, but less robust and with the elytral coloration still more
shining and metallic, being of a more aeneo-purpurate character; it also
differs in having the sides of the elytra more gradually rounding at base;
subapical sinus of the elytra a little shorter and more distinct. Length
(cf) 11.5-12.8, (9) 11.7-14.0 mm.; width (c?) 3.8-4.6 , (9) 4-3-5-Q mm.
Pennsylvania (Camphill), — A. B. Champlain. A large series.

LeConte described his purpuratus from Ohio, and the differences
noted distinguish the species as it occurs to the west and east of
the Appalachian Mountains. I have had occasion to notice this
geographic differentiation in several other cases, such as Cicindela
and Tetraopes. The dimensions of my single female representative
of purpuratus are 14.5 by 5.5 mm.

Parargutor n. gen.

The species are, so far as known, few in number in this generic
group, which is peculiar to the true Pacific coast fauna. There
are two distinct species in my collection at present, which may be
known easily as follows :

Body subparallel, moderately convex, black, shining, the legs black or
piceous-black, the anterior male tarsi ferruginous to piceous; head
fully three-fifths as wide as the prothorax, the sulci feebly converg-
ing; front convex, with some irregular longitudinal strigilation lat-
erally; antennae black, the tip ferruginous, about as long as the head
and prothorax, the latter very evidently wider than long, the sides
distinctly sinuate basally, the foveal region abundantly punctate,

378 MEMOIRS ON THE COLEOPTERA

especially within; fovea attaining the base, which is as wide as the
sinuate apex; elytra two-thirds longer than wide, a fourth wider than
the prothorax, the striae very moderately impressed, the intervals
feebly convex; joints of the middle and posterior tarsi deeply sulcate
externally; male with one, the female with two, apical abdominal
punctures at each side. Length (cf 9 ) 9.5-11.5 mm.; width 3.5-
4.2 mm. Middle and northern California and Nevada (Reno). A

large series lustrans Lee.

Body nearly similar but more elongate, similar in coloration and lustre;
head less than three-fifths as wide as the prothorax, almost as in
lustrans, the antennae (cf) longer than the head and prothorax, the
latter not distinctly shorter than wide, somewhat more noticeably
so in the female; sides basally oblique but barely perceptibly sinu-
ate, the angles minutely sharp and subprominent; base a little wider
than the deeply sinuate apex in the male; foveal region strongly
punctate, the fovese similar; elytra longer, fully three-fourths longer
than wide, nearly a third wider than the prothorax; striation nearly
as in lustrans; anterior tarsi of the male differing greatly in being
black and not obscure ferruginous. Length (cf 9 ) 10.7-11.8 mm.;
width 4.0-4.1 mm. Oregon (Clackamas Co.). Two examples.

atrolucens n. sp.

The met-episterna, sides of the metasternum and latero-basal
parts of the abdomen, are punctate in both these species, the punc-
tures a little coarser in atrolucens, but, as usual, these punctures
are notably variable in number in different individuals. In lus-
trans the male is smaller than the female, but this is not noticeable
in atrolucens.

Pseudargutor n. gen.

So far as examined, literature seems to show that no distinctive
generic name has ever been given the remarkably isolated Feronia
erythropus, of Dejean. It was described under the name nitidus by
Kirby, and placed in Platyderus Steph., a genus of peculiarly south-
ern European range, and apparently assuming, in those regions,
very nearly the role that Loxandrus does in North America. There
is something about erythropus, besides the occasional feebly opal-
escent lustre, that reminds us of Loxandrus, but the anterior tarsi
of the male are perfectly symmetric.

Micromaseus n. gen.

The species of this genus, known to me thus far, arefemoralis Kirby
and desidiosus Lee., corusculus Lee. and patruelis Dej., all very small
species, remindful of Cryobius, but with much smaller head and dif-

PTEROSTICHIN.E 379

fering decisively, of course, in the longer met-episterna. Desidi-
osus very closely resembles femoralis, and does not seem to differ
materially in strial punctuation as stated by LeConte, but it is
nevertheless distinct in its entirely rufous legs, more abbreviated
form of the body and more oval elytra. The following is allied to
femoralis and desidiosus in strial punctuation, but differs in the
form of the prothorax:

Micromaseus aequicollis n. sp. — Body elongate, moderately convex,
very shining, the type ferruginous but very immature, probably nearly
black in maturity; femora not quite so dark as the tibiae; head four-sev-
enths as wide as the prothorax, with large though but slightly prominent
eyes and unusually short sulci; antennae half as long as the body, very
slender and equally filiform, the basal joint nearly twice as thick as the
remainder ; prothorax widest exactly at the middle, parallel, scarcely visibly
shorter than wide, the sides very evenly and equally arcuate from apex
to base, the basal angles sharp and minutely, feebly prominent; base as
wide as the rather deeply sinuate apex; surface wholly impunctate, the
fovea not long, rather narrow and not attaining the base, which is finely
margined, the margin interrupted medially; median stria extremely fine;
elytra three-fourths longer than wide, scarcely a fifth wider than the
prothorax; striae rather coarse, not very deep and strongly punctured,
more closely than in femoralis; scutellar stria rather long and finer, punc-
tured, interrupted basally in the type; intervals only feebly convex.
Length (o") 6.0 mm.; width 2.0 mm. Missouri (St. Louis).

The peculiar form of the prothorax, which is widest at the middle
and with perfectly parallel and evenly arcuate sides throughout,
will enable one to identify this species at once. The single type
specimen is extremely immature.

I have at present no representative of Pterosticlhis obesulus or
splendidulus of LeConte, but, from the published characters, they
should apparently each form the type of a peculiar generic group.

Loxandrus Lee.

Megalostylus \\ Chd.

The peculiar neatness of appearance, the highly polished integu-
ments, generally with distinct iridescent lustre, and the remarkable
fleetness of foot characterizing the species of this genus, might,
with some unscientific license, justify us in regarding them as the
grayhounds of the Pterostichinse. The species are very numerous
and probably number far more than one hundred. They are essen-
tially southern, only a few occurring as far to the northward as the

380 MEMOIRS ON THE COLEOPTERA

latitude of Pennsylvania, and they are particularly abundant in the
regions bordering the Gulf of Mexico. Some of the few Mexican
and South American species placed in this genus by Bates, such as
sculptilis and opaculus, certainly are far from being typical Loxan-
drus, and should probably be separated generically. The genus is
also recorded by Bates as occurring in Celebes and Australia, but
I doubt the correctness of the identification very much. Possibly
Loxandrus tetrastigma Bates, from Mexico, may also form a differ-
ent genus, as it differs decidedly in habitus from the normal forms.
In fact it seems probable that the genera allied to Loxandms should
form a natural tribal group in the subfamily Pterostichinae.

In regard to our own species, I have in my collection twenty-six,
scarcely more than a fourth of which can be identified with any pre-
viously described and of these a few are doubtful, owing to the
very inadequate descriptions of some earlier authors. These spe-
cies may be described as follows :

Elytra uniform in coloration 2

Elytra with a small rounded sutural rufous spot near the apex; size

small 20

2 — Prothorax broadly reflexo-explanate at the sides posteriorly; largest

species of the genus 3

Prothorax not distinctly reflexed at the sides posteriorly 4

3 — Body rather broad, more parallel, moderately convex, deep black,
the elytra distinctly iridescent; legs black, the tibiae and tarsi pice-
ous; head well developed, nearly three-fifths as wide as the protho-
rax, the anterior sulci small and feebly impressed; antennae long,
very slender, infuscate, the three basal joints and the palpi ferru-
ginous; prothorax large, fully two-fifths wider than long, parallel,
the sides very evenly arcuate from apex to the broadly rounded
basal angles; apex deeply sinuate, evidently narrower than the base,
which is feebly sinuate medially as usual, finely margined laterally;
transverse impressions not evident; apical margin without trace of
a fine incised parallel line except laterally; stria fine, biabbreviated;
surface with a few scattered punctures medially toward base, the
elongate foveae rather coarsely impressed; lateral explanature mod-
erate; elytra oblong, one-half longer than wide, barely a fifth wider
than the prothorax, the striae coarse and very deeply impressed,
strongly punctured, the punctures obsolete posteriorly; intervals
strongly convex; subapical sinus short, distinct. Length (cf 9
12.0-13.5 nim.; width 4.6-5.1 mm. Louisiana (Monroe). Eleven

specimens saphyrinus Chd.

Body much narrower, more elongate-suboval, rather more convex, simi-
lar in coloration throughout, the elytra having feebler iridescence;
head narrower and rather more elongate; antennae not quite so

PTEROSTICHIN^E 381

slender o; elongate, fusco-testaceous, paler basally, the palpi pale;
prothorax relatively not quite so large, two-fifths wider than long;
apex sinuate but scarcely at all narrower than the base, similarly
without trace of a fine incised submarginal line except laterally;
sides evenly but less strongly arcuate, more coarsely and strongly
reflexed, finely so apically, rapidly more broadly basally; anterior
transverse impression evident; surface otherwise nearly as in the
preceding, the hind angles very broadly rounded; base finely mar-
gined toward the sides; elytra more oval, arcuately narrowing from
near the middle, less obtuse at apex, more convex, more than one-
half longer than wide, a fourth wider than the prothorax; striae deep
but rather less coarse, very distinctly but somewhat less coarsely,
crenulately punctate except posteriorly, the intervals not quite so
convex; sixth and seventh striae abruptly subobsolete; they are much
like the other striae in saphyrinus, the seventh there distinct but fee-
bler. Length (9) 13. 5 mm.; width 4.6mm. Florida (Sarasota), —

Blatchley lateralis n. sp.

4 — Hind angles of the protho.rax obtuse and more or less obviously
rounded, or at least blunt at tip, though never so broadly rounded

as in the two preceding; body small to rather large in size 5

Hind angles not at all rounded, generally minutely and feebly subprom-

inent 17

5 — Legs rufous, either throughout or rarely with only the femora wholly

or partially darker 6

Legs black or dark almost throughout, the tarsi generally paler 14

6 — Species of moderately large size, 8-13 mm 7

Species notably small in size, not materially exceeding 7 mm. in length . . 10

7 — Incised line along the thoracic apex entire, angulate 8

Incised line arcuate, completely though not broadly interrupted at the

middle 9

8 — Form suboblong, rather convex, black, the legs dark rufous; elytra
with moderate iridescence; head rather large, not longer than wide,
with moderate and prominent eyes, the sulci short, feebly and dif-
fusely impressed as usual; mandibles piceous-black; antennae slen-
der, fusco-testaceous, a little clearer basally; prothorax large, nearly
two-fifths wider than long, the sides parallel and only very moder-
ately though subevenly arcuate, not coarsely but abruptly and evenly
reflexed throughout; basal angles very obtuse, somewhat rounded;
apex deeply sinuate, much narrower than the base, the angles rather
sharp and distinct; surface with scattered punctures at base between
the foveae, the latter coarse and deeply impressed; base margined
from the foveae to the sides as in the preceding; elytra three-fifths
longer than wide, almost a fourth wider than the prothorax, oblong,
the subapical sinus rather feeble; striae rather coarse and impressed,
strongly, very closely punctured, the seventh feebler basally; inter-
vals moderately convex. Length (9) 12.5 mm.; width 4.4 mm.

District of Columbia, — -Ulke rectus Say

A — Almost similar but a little narrower, the head somewhat smaller
and more elongate, the mandibles bright rufous, becoming black
distally; prothorax less transverse, a third wider than long; apex

382 MEMOIRS ON THE COLEOPTERA

less distinctly narrower than the base and with the angles broadly
rounded, otherwise nearly as in rectus; elytra nearly similar, though
relatively broader, the seventh stria still finer and more nearly
obsolete except posteriorly. Length (cf) 11.5 mm.; width 4.0

mm. District of Columbia, — Ulke mandibularis n. subsp.

B — Form shorter and broader than in rectus, similar in coloration and
striation, the head notably smaller, but little more than half as
wide as the prolhorax, the mandibles as in rectus; prothorax rela-
tively not so large, a third wider than long, otherwise nearly simi-
lar, except that the hind angles are less obtuse, with the apices
only blunt and not distinctly rounded; elytra rather shorter, more
obtuse at apex but with deeper subapical sinus, similarly striate
and punctured. Length (cf) n.o mm.; width 4.3 mm. Texas

(Galveston) laticollis Chd.

Form less broad, more nearly as in lucens, black, the legs ferruginous;
elytral iridescence rather feeble; head moderate, longer, with longer
neck and rather prominent eyes, four-sevenths as wide as the pro-
thorax; mandibles faintly rufescent basally, the labrum, antennae
and palpi bright ferruginous; prothorax shorter, very nearly one-half
wider than long, the parallel sides very evenly and rather strongly
arcuate and finely reflexed from apex to the very obtuse and rather
rounded basal angles; base margined laterally, wider than the deeply
sinuate apex; foveae deeply depressed, not quite attaining the base,
the margination of the latter extending inward slightly beyond them;
elytra three-fifths longer than wide, more than a fourth wider than
the prothorax; striae rather coarse but not very deep, the punctures
not strong or very close-set and feebly crenulating the intervals,
which are only very moderately convex, the seventh stria feeble
basally; sinus rather short and distinct. Length (9) 10.0 mm.;

width 3.7 mm. District of Columbia, — Schwarz limatus n. sp.

Form still narrower, the size much smaller, black; epipleura, sides of the
prosternum and almost the entire abdomen rufescent; legs pale ferru-
ginous; elytra strongly iridescent; head two-thirds as wide as the
prothorax, with long neck, moderate but very prominent eyes and
ferruginous antennae, palpi and labrum; mandibles obscure rufous,
blackish distally; prothorax of different form, not quite one-half
wider than long, widest rather before the middle; base scarcely so
wide as the apex and very finely margined laterally, with extremely
obtuse and rather rounded angles; sides subevenly arcuate, finely
subevenly reflexed; anterior impression obsolete, the posterior feeble;
surface with a few punctures scattered near the foveae, the latter
rather short, narrow and deep, not attaining the base; elytra oblong-
oval, very moderately convex, one-half longer than wide, not quite
a third wider than the prothorax, the striae moderately coarse, not
very deep, finely and not at all conspicuously punctate, the punc-
tures very finely subcrenulating the intervals, which are almost flat,
the seventh stria feeble basally; sinus rather short, distinct. Length
(9 ) 8.0 mm.; width 2.8 mm. Texas (Houston) . . . . collucens n. sp.
9 — Surface rather depressed, black, the legs dark rufous, the elytra with
bright iridescence; head three-fifths as wide as the prothorax, with

PTEROSTICHIN^; 383

rather long neck and large prominent eyes; antennae, palpi and la-
brum dark ferruginous; prothorax parallel, with evenly and strongly
arcuate and very finely reflexed sides; base somewhat wider than
the deeply sinuate apex, finely margined laterally, the angles very
obtuse, rounded; incised line behind the apex extremely narrowly
interrupted at the middle; stria very fine and incomplete, the surface
with a band of dispersed punctures between the foveae, the latter
rather narrow and deep, not attaining the base; elytra oblong-oval,
three-fifths longer than wide, less than a fourth wider than the pro-
thorax; striae very moderate, shallowly groove-like, with very fine
punctures, the intervals nearly flat; seventh stria fine only near the
base; sinus rather short and distinct. Length (9 ) 9-8 mm.; width
3.35 mm. Texas (locality unrecorded) lucens Chd.

Surface rather more convex, black, the legs dark rufous; epipleura and
abdomen faintly rufescent; elytra with moderate iridescence; head
two-thirds as wide as the prothorax, with long neck and moderate,
prominent eyes, not as large as in the preceding; antennae a little
less elongate but similarly ferruginous; prothorax not quite one-half
wider than long, widest distinctly before the middle, with the sides
rounded, rather less so basally, finely reflexed; base about as wide as
the deeply sinuate apex, finely margined laterally, the angles broadly
rounded; apical incised line very fine, rather broadly and completely
interrupted medially; surface with very few extremely small punc-
tures near the foveae, the latter narrow and deep, not attaining the
base; elytra scarcely a fourth wider than the prothorax, one-half
longer than wide, more obtuse at apex than in lucens, the sinus a
little longer; striae moderate though deep and groove-like, the punc-
tures small, minutely crenulating the intervals, which are very mod-
erately convex; seventh stria very feeble except apically. Length
(9) 8.7 mm.; width 3.0 mm. Lousiana (Cane River). One ex-
ample taken by the writer ludovicianus n. sp.

10 — Femora all blackish, the tibiae and tarsi dark rufous. Body mod-
erate in width and convexity, black, the elytra feebly iridescent;
head small, slightly over half as wide as the prothorax, with rather
long neck and large eyes, the sulci very short, feeble and indefinite;
antennae fuscous, very slender, the three basal joints in great part
testaceous, the palpi pale; mandibles small; prothorax a fifth wider
than long, the apex feebly sinuate, with obtusely rounded angles and
a little narrower than the base, which is margined except medially
and with rounded, moderately obtuse angles; sides moderately, sub-
evenly arcuate, narrowly reflexed and diaphanous, less rufous apic-
ally; apical incised line entire; impressions obsolete; foveae narrow,
deep, punctured and almost attaining the base; elytra less than one-
half longer than wide, fully a third wider than the prothorax, rapidly
and obtusely rounded behind, the sides also more rounding basally,
the sinus short, distinct; striae rather coarse and deeply impressed,
strongly punctate except apically, the seventh obsolescent basally;
intervals rather strongly convex. Length (9) 6.8 mm.; width 2.5
mm. Pennsylvania (Harrisburg), — Champlain agilis Dej.

Femora all rufous, but clouded with blackish beneath. Moderately

384 MEMOIRS ON THE COLEOPTERA

broad and rather feebly convex, black, sometimes piceous anteriorly,
the elytra very feebly iridescent; head relatively larger than in agilis,
with moderate but prominent eyes, two-thirds as wide as the pro-
thorax; antennae slender, fuscous, the three basal joints and palpi
pale, the labrum rufous; prothorax nearly a fourth wider than long,
the deeply sinuate apex a little narrower than the base and with
somewhat prominent though blunt angles; base margined except
medially, the angles moderately obtuse, with slightly blunt apex;
surface with scattered punctures medio-basally, very fine stria and
obsolete apical incised line, the latter visible laterally and sometimes
very faintly traceable medially; foveae deep, not quite attaining the
base; sides moderately, subevenly arcuate, narrowly reflexed and
diaphanous; elytra nearly one-half longer than wide, a third wider
than the prothorax, parallel, rapidly and obtusely rounded behind,
with distinct sinus and with posteriorly diaphanous margins, the
suture dull rufous posteriorly; striae rather fine and groove-like,
finely, rather obscurely punctate, the seventh gradually finer basally;
intervals but very moderately convex; sides beneath and abdomen
slightly rufous. Length (9) 6.2-6.35 mm.; width 2.25-2.4 mm.

Texas (Galveston) taeniatus Lee.

Femora rufous, the posterior however more obscure than the two anterior.
Body black and moderately convex, almost entirely black beneath;
elytra feebly iridescent; head elongate, with moderately prominent
eyes and distinct neck, three-fifths as wide as the prothorax; labrum
and mandibles rufous, the latter blackish at tip; antennae very slen-
der, piceous, the three basal joints and the palpi pale testaceous;
prothorax parallel, a fifth wider than long, the sides broadly, sub-
evenly arcuate, the margin narrowly reflexed, diaphanous posteriorly;
apex moderately sinuate, with very blunt angles and only very little
narrower than the base, which is margined only from the line of the
foveae outwardly, the angles obtuse and rounded; apical incised line
entire and broadly angulate, the stria very fine, incomplete as usual;
impressions obsolete; scattered subbasal punctures minute and very
few; foveae narrow, deep, not attaining the base; elytra rather more
than one-half longer than wide, fully a fourth wider than the pro-
thorax, gradually arcuately rounded behind from near the middle;
sides subevenly arcuate; suture feebly rufescent posteriorly; striae
not fine, rather deep, scarcely impressed, the punctures not coarse
but strong and crenulating the intervals, which are barely at all
convex; seventh stria fine, completely obsolete basally. Length ( 9 )
6.5 mm.; width 2.4 mm. Florida (Dunedin), — Blatchley.

suturalis n. sp.
Femora all bright rufous; apical incised line of the prothorax distinct

and entire 1 1

n — Elytra arcuately rounded behind from near the middle 12

Elytra parallel, rapidly and more obtusely rounded behind 13

12 — Form rather elongate and convex, deep black, more piceous beneath;
elytra with the feeblest vestiges of iridescence; head smaller and more
elongate than in suturalis, but little more than half as wide as the
prothorax, the neck long, the eyes well developed and prominent;

PTEROSTICHIN^: 385

antennae very slender, fusco- testaceous, paler basally, the palpi pale;
labrum rufous, the mandibles notably small; prothorax scarcely a
fifth wider than long, the sides evenly and moderately arcuate,
finely reflexed, only a little paler basally; apex moderately sinuate,
with less blunt angles than in suturalis and much narrower than the
base, which is margined nearly to the middle, the angles obtuse and
bluntly rounded; impressions barely traceable, the scattered medio-
subbasal punctures fine and very few; foveae narrow and deep, longer
than in suturahs though not attaining the base; elytra rather more
than one-half longer than wide, a third wider than the prothorax,
the sides a little more rounded basally, the subapical sinus rather
long, only moderately deep; striae and punctures throughout nearly as
in the preceding, the intervals a little more convex. Length (cf)
6.3 mm.; width 2.35 mm. Florida (Sarasota), — Blatchley.

cervicalis n. sp.

Form somewhat elongate-oval, rather strongly convex, rufo-piceous, paler
anteriorly and beneath; elytra barely perceptibly iridescent; head
not large, elongate and with rather large and prominent eyes, two-
thirds as wide as the prothorax; labrum and mandibles rufous, the
latter tipped with blackish; antenna? slender, piceous, the first three
joints and the palpi pale testaceous; prothorax nearly a third wider
than long, parallel, with very evenly though moderately rounded
sides and finely reflexed edges; apex barely visibly narrower than
the base, feebly sinuate, with obtuse angles, the base finely margined
except medially, the angles obtuse and very blunt; impressions obso-
lete, the fine stria distinct; medio-subbasal punctures very few;
foveae very narrow, moderate in depth, widely separated from the
base; elytra oblong-oval, more than one-half longer than wide,
nearly one-half wider than the prothorax, the sides a little more
rounded basally, the subapical sinus rather feeble; striae fine but
deeply impressed, very finely but distinctly punctate, the seventh
obsolescent basally; intervals moderately though distinctly convex.
Length (9) 5-75 mm.; width 2.2 mm. Florida (LaBelle), — Blatch-
ley mundus n. sp.

13 — Form and general characters very nearly as in tccniatus, but with
very pale and uniform ferruginous legs, smaller and narrower head
and complete and distinct apical incised line of the prothorax, rather
depressed, black, the thoracic side margins, a medio-basal area and
the elytral suture, apically, rufescent; under surface not paler;
elytra with moderate iridescence; head elongate, with moderately
prominent eyes, but little more than half as wide as the prothorax,
the neck long; labrum and mandibles dull rufous, the palpi pale;
antennae slender, nearly as in tceniatus but not quite so long; pro-
thorax a fourth wider than long, parallel, with very evenly, moder-
ately rounded sides; apex moderately sinuate, a little narrower than
the base and with rather blunt angles; base margined, except in the
rufous median area, the angles obtuse and distinctly rounded; foveae
rather deep, punctulate, well separated from the base; elytra one-half
longer than wide, fully a third wider than the prothorax, obtusely
T. L. Casey, Mem. Col. VIII, Oct. 1918.

386 MEMOIRS ON THE COLEOPTERA

rounded in apical third; striae not very fine but shallow and groove-
like, with small, close-set and rather indistinct punctures, the sev-
enth finer though distinct basally; intervals barely more than flat.
Length (9 ) 6.0 mm.; width 2.2 mm. Texas (Galveston).

accelerans n. sp.

Form more elongate and parallel, feebly convex, black, the thoracic base
and distal parts of the elytral suture feebly rufescent; under surface
piceous-black, the legs pale; elytra not distinctly iridescent; head
elongate, with long neck and rather large prominent eyes, four-sev-
enths as wide as the prothorax; labrum and mandibles dull rufous,
the latter blackish distally; antennae fusco-testaceous, clearer bas-
ally, the palpi pale; prothorax a fourth wider than long, subparallel,
with very evenly, moderately rounded sides, the edge finely reflexed;
apex deeply sinuate, with distinct though blunt angles, very much
narrower than the base, which is margined, except medially, and with
blunt and moderately obtuse angles; impressions obsolete; medio-
subbasal punctures very few, feeble and indefinite; foveae deep,
almost attaining the base; elytra more than one-half longer than
wide, only a fourth wider than the prothorax, rapidly and obtusely
rounded at apex, parallel, with the nearly straight sides gradually
rounding basally; subapical sinus very moderate; striae moderate,
groove-like, distinctly though finely, subcrenulately punctate, the
seventh distinct though finer; intervals broad, barely at all convex,
rapidly very narrow on the apical slope, where the striae become
coarser. Length (cf) 7.0 mm.; width 2.7 mm. Louisiana (Mon-
roe). A single example taken by the writer parallelus n. sp.

14 — Prothorax widest posteriorly. Body moderately stout and unusually
convex, highly polished and deep black, the elytra without evident
trace of iridescence; under surface and legs black, the tarsi rufous;
head four-sevenths as wide as the prothorax, slightly elongate, with
long neck and rather large prominent eyes; antennae piceous, the
first joint pale; mandibles blackish, the labrum dark; palpi testa-
ceous; prothorax scarcely a fourth wider than long, the sides broadly,
subevenly arcuate, gradually converging from near the base to the
apex, which is very moderately sinuate, with broadly rounded angles
and much narrower than the base, the latter strongly margined ex-
cept medially and with obtuse and distinctly rounded angles; lateral
margins strongly reflexed, narrowly toward apex and more broadly
posteriad, the surface declivously subexplanate basally; impressions
obsolete, the incised apical line entire; medio-subbasal punctures
few but distinct; foveae only a fourth the total length, not quite
attaining the base, deep; elytra one-half longer than wide, only a
fifth wider than the prothorax, ogival in apical third, the sides parallel
and very feebly arcuate, more so basally the sinus short and deep;
striae rather coarse and deep, s,trongly and crenulately punctate, the
seventh obsolescent except apically; intervals broadly and moder-
ately convex. Length (cf ) 9.3 mm.; width 3.5 mm. Florida (Dun-
edin), — Blatchley. Tampa, — LeConte calathinus Lee.

Prothorax more of the usual form, widest at or near the middle; lateral
thoracic margins finely, evenly reflexed throughout the length. . .15

PTEROSTICHIN.E

15 — Pronotum narrowly deplanate at the sides basally. Elongate-sub-
oval, rather strongly convex, very shining, deep black, the tarsi
rufous; anterior tibiae paler than the others; elytra without any very
obvious trace of iridescence; head small, with long neck and well
developed eyes, four-sevenths as wide as the prothorax; mandibles
black, the palpi pale; antennae nearly black, testaceous basally;
prothorax nearly a third wider than long, the sides very evenly,
moderately rounded; apex sinuate, distinctly narrower than the base,
the incised line deep, the stria deep and almost entire; base margined
except medially, the angles broadly obtuse, rounded; anterior im-
pression obsolete, the posterior feeble, the medio-subbasal punctures
evenly scattered and distinct; foveae deep, not quite attaining the
base; elytra one-half longer than wide, fully a fourth wider than the
prothorax, arcuately narrowing behind the middle, the sides feebly,
subequally arcuate to the base, the sinus short, unusually deep;
striae somewhat coarse, strongly and conspicuously, subcrenalately
punctate, the seventh obsolete basally; intervals rather strongly
convex. Length (9 ) 7-6 mm.; width 2.75 mm. Florida (Dunedin),
— Blatchley cursitans n. sp.

Pronotum not deplanate at the sides basally 16

16 — Form rather stout and subventricose, highly polished, deep black,
the tarsi paler; elytra feebly iridescent; head elongate, with prom-
inent eyes and long neck; mandibles blackish throughout; antennae
fuscous, testaceous basally; prothorax barely a fourth wider than
long, the sides very evenly, moderately arcuate; apex moderately
sinuate, evidently narrower than the base, which is finely margined
laterally and with broadly obtuse rounded angles; apical incised
line very fine and feeble, interrupted at the middle; impressions fee-
ble, the stria very fine; medio-subbasal punctures almost wanting;
foveae narrow and deep, distinctly separated from the basal margin;
elytra one-half longer than wide, fully two-fifths wider than the
prothorax, rather rapidly, arcuately narrowing in about apical third;
sides slightly more arcuate basally, the subapical sinus short and
notably shallow; striae rather fine but well impressed, the punctures
distinct and subcrenulate but not coarse; seventh stria obsolete bas-
ally; intervals broadly convex. Length (9) 8.6-9.5 mm.; width
3.4-3.5 mm. Florida (Dunedin), — -Blatchley comptus n. sp.

Form much narrower, not so ventricose and not quite so convex, simi-
larly colored, the elytra feebly iridescent; head barely at all elon-
gate, with large prominent eyes and moderate neck, nearly two-
thirds as wide as the prothorax; mandibles obscure rufous, blackish
distally; antennae piceous, testaceous basally, the palpi pale; pro-
thorax a fourth to third wider than long, the parallel sides evenly
and rather strongly arcuate; apex rather deeply sinuate, much nar-
rower than the base, with but slightly blunt prominent angles and
very fine and feeble though entire incised line; base finely margined
laterally, with broadly obtuse and rounded angles; impressions both
feeble, the stria very fine, biabbreviated, the medio-subbasal punc-
tures minute, few or wanting; foveae narrow, deep, far from attain-
ing the base; surface very feebly declivously flattened postero-lat-

388 MEMOIRS ON THE COLEOPTERA

erally but not explanate; elytra three-fifths longer than wide, about
a fourth wider than the prothorax, evenly ogival in apical two-
fifths, the sides a little more arcuate basally; subapical sinus short
and moderate; striae and punctures throughout nearly as in the pre-
ceding, the intervals rather less convex. Length (cf) 7.8-8.0 mm.;
width 2.8 mm. Florida (Dunedin), — Blatchley scitus n. sp.

Form broader and flatter, with shorter prothorax, black, piceous beneath,
the tibiae rufo-piceous, the tarsi paler, rufous; elytra with very faint
bluish iridescence; head not at all elongate, with short neck and
large, rather prominent eyes, two-thirds as wide as the prothorax;
mandibles rufescent, blackish distally, the labrum pale castaneous,
the palpi testaceous; antennae fuscous, paler basally; prothorax fully
a third wider than long, the sides evenly and moderately rounded;
apex moderately sinuate, with slightly blunt, somewhat projecting
angles, distinctly narrower than the base, which is finely margined
laterally, with the angles but slightly obtuse and rather narrowly
rounded; surface with numerous faint ruguliform transverse lines,
the apical incised line fine and faint, wholly obliterated medially;
both transverse impressions rather evident; medio-subbasal punc-
tures virtually wanting; foveae narrow, deep, not attaining the base;
latero-basal parts of the surface nearly as in scitus; elytra fully one-
half longer than wide, about a third wider than the prothorax, rap-
idly ogival in scarcely apical third, the parallel sides more arcuate
basally, the sinus rather short, deep; striae and punctures through-
out nearly as in comptus, the intervals rather less convex. Length
(9) 8.0 mm.; width 3.2 mm. Florida (Indian River), — Prof.
Kemp contumax n. sp.

17 — Body rather large in size, notably broad, with the upper surface
unusually flattened. Oblong, deep black and polished, the tarsi
not more than piceous in color; elytra brilliantly iridescent; head
small, slightly elongate, with rather long neck, large but moderately
prominent eyes, piceous-black mandibles and dark castaneous la-
brum, scarcely more than half as wide as the prothorax; antennae
fusco-testaceous; prothorax large, a third wider than long, the sides
moderately arcuate and sharply but not broadly reflexed, a little
straighter basally; apex deeply sinuate, with rather blunt prominent
angles and distinctly narrower than the base, which is faintly mar-
gined only in lateral fourth, the angles only slightly more than right
and not in the least rounded or blunt, though not prominent; apical
incised line fine but strong, entire; surface feebly iridescent, rather
depressed postero-laterad, though not exactly explanate; impres-
sions vestigial, the subbasal punctures virtually wanting; foveae
two-fifths the total length, not attaining the base, broadly impressed
but sharply so along the bottom; elytra three-fifths longer than wide,
about a third wider than the prothorax, rapidly rounded in apical
third, the parallel sides a little more arcuate basally; sinus moder-
ate but distinct; striae fine and shallow, extremely finely and indis-
tinctly though closely punctulate, the seventh subsimilar and dis-
tinct to the base; intervals almost flat. Length (9) u.o mm.;
width 4.2 mm. Mississippi (Vicksburg) fulgens n. sp.

PTEROSTICHIN/E 389

Body smaller, narrower and more convex 1 8

1 8 — Form ventricose, the hind body very much broader than the pro-
thorax. Black and shining, the legs black, with piceous tarsi; ely-
tra feebly iridescent; surface rather convex; head slightly elongate,
with long neck and large, rather prominent eyes, three-fourths as
wide as the prothorax; mandibles black, rufous distally except at
the extreme apex; labrum very dark, the palpi pale; antennae pice-
ous, rufous basally; prothorax a fourth wider than long, widest at
the middle, the sides subevenly, moderately arcuate to the basal
angles, which are minutely and abruptly prominent, not rounded;
margins narrowly reflexed, diaphanous posteriorly; apex sinuate,
with distinct angles and distinctly narrower than the base, which is
margined laterally; apical incised line very fine, obsolete medially;
impressions nearly obsolete; medio-subbasal punctures very few,
clustered in two groups; foveae moderate, linear, not attaining the
base; elytra less than one-half longer than wide, three-fifths wider
than the prothorax, parallel, rapidly obtusely rounded behind, the
sides more rounded basally; sinus moderate and short; striae not
very fine, feebly impressed, finely but strongly, closely punctate,
the seventh distinct to the base, though gradually finer; intervals
moderately convex. Length (9) 6.7 mm.; width 2.8 mm. Texas
(Galveston). A single example taken by the writer.

parvicollis n. sp.

Form more elongate, not ventricose, moderately convex 19

19 — Body moderately broad, polished, black; legs obscure rufous, the
hind femora alone blackish; elytra rather brilliantly iridescent; head
four-sevenths as wide as the prothorax, elongate, with moderate but
rather prominent eyes; mandibles obscure rufous, darker distally;
palpi pale; antennae slender, piceo-testaceous, paler basally; pro-
thorax not a fourth wider than long, widest slightly before the mid-
dle, the sides finely, diaphanously reflexed, subevenly and moder-
ately rounded, a little less so basally to the angles, which are very
minutely subprominent and not rounded, the sides coming upon
the base in distinctly more than a right angle; apex deeply sinuate,
with rather blunt angles, much narrower than the base, which is
finely margined except along the median sinus; apical incised line
distinct, entire and obtusely angulate; surface with very feeble
ruguliform transverse lines and nearly obsolete impressions; sub-
basal punctures distinct, sparse, and extending also outwardly along
the base; foveae rather long and deep, far from attaining the base;
elytra three-fifths longer than wide, barely a third wider than the
prothorax, gradually, then more rapidly, rounded posteriorly, the
sides rather arcuate; sinus unusually shallow; striae rather strong,
the punctures very fine and close-set, the seventh stria distinct to
the base, though becoming finer; intervals moderately convex.
Length (9 ) 9-5 mm.; width 3.35 mm. Indiana. . . .inquietus n. sp.
Body narrower but otherwise of the same habitus, similar in coloration
throughout, except that all the legs, with exception of the tarsi, are
piceous-black; hind trochanters and the hind femora, basally, rufous;
elytra similarly iridescent; head throughout almost as in inquietus

39Q MEMOIRS ON THE COLEOPTERA

but a trifle narrower; antennae long, very slender, fusco-testaceous,
paler basally; prothorax only just visibly wider than long, widest
slightly before the middle, the sides less rounded than in the pre-
ceding, gradually less arcuate basally, where the angle is distinctly
more than right and not at all rounded, but with its apex not at all
prominent; apex as in inquietus, except that the angles are blunter
and the incised line finer, feebler and subinterrupted at the middle,
the surface otherwise as in the preceding, except that the fine median
stria is more impressed, the ruguliform lines obsolete and the fovese
less elongate; elytra three-fourths longer than wide, a third wider
than the prothorax, gradually rounded behind, the sinus shallow;
striae fine, feebly impressed suturally, the punctures extremely mi-
nute, the seventh distinct to the base but feebler than the others;
intervals nearly flat. Length (cf1) 8.7 mm.; width 2.9 mm. Dis-
trict of Columbia, — Ulke velocipes n. sp.

20 — Lfcgs pale ferruginous throughout; hind thoracic angles obtuse and
rounded at tip. Black, the elytra feebly iridescent; head two-thirds
as wide as the prothorax, not elongate, the eyes very prominent;
labrum and mandibles rufo-castaneous; antennae fuscous, paler bas-
ally; prothorax parallel, a fourth wider than long, the sides evenly,
moderately rounded and finely reflexed from apex to base; apex
feebly sinuate, with obtuse angles, not distinctly narrower than the
base, which is rufescent medially, finely margined laterally; apical
incised line distinct and entire; impressions feeble though visible,
the stria very fine; subbasal punctures obsolescent; foveae narrow,
deep, far from attaining the base; elytra one-half longer than wide,
barely a third wider than the prothorax, gradually rounding behind,
more rapidly at apex; sides more rounding basally; striae not very
fine, moderately impressed, distinctly though not coarsely, crenu-
lately punctate, the seventh obsolete basally; intervals moderately
convex; subapical sinus very shallow. Length (9 ) 6.5 mm.; width
2.35 mm. Indiana vulneratus n. sp.

Legs dark, the femora black; hind thoracic angles slightly more than right,
but not rounded and more or less indistinctly, minutely and bluntly
subprominent 21

21 — Body oblong-suboval, rather convex, polished, black, the tarsi rufo-
piceous; elytra with moderate iridescence; head nearly two-thirds as
wide as the prothorax, with rather long neck and prominent eyes,
scarcely elongate; mandibles and labrum very dark; palpi pale;
antennae brownish-testaceous, a little clearer basally; prothorax a
fourth to third wider than long, parallel, with evenly and distinctly
arcuate and finely reflexed sides, the apex moderately sinuate, with
bluntly rounded angles and only slightly narrower than the base, the
incised line fine and feeble though entire and unusually close to the
apical edge; medio-subbasal punctures few, clustered toward the
foveae, which are moderate, rather deeply impressed; elytra rather
more than one-half longer than wide, scarcely a third wider than
the prothorax; parallel, rapidly rounding behind, the nearly straight
sides more rounding basally, the sinus feeble though evident; striae

PTEROSTICHIN/E 391

fine, groove-like, very finely, closely punctate, the seventh distinct
throughout; intervals only very feebly convex. Length (cf 9 ) 7.2
mm.; width 2.5-2.6 mm. Florida (Sarasota), — Blatchley.

celer Dej.

Body shorter, more ventricose and rather more convex, polished, black,
more piceous beneath, the tarsi dull rufous; elytra moderately iri-
descent; head slightly elongate, with large and rather prominent
eyes, almost three-fourths as wide as the prothorax; antennae pice-
ous, paler basally; prothorax smaller and narrower than in the pre-
ceding, barely a fourth wider than long, the parallel sides very evenly,
moderately arcuate and finely, diaphanously reflexed; apex moder-
ately sinuate, with bluntly rounded angles, slightly narrower than
the base, which is margined except medially, not rufescent at the
middle; incised apical line very fine, obsolete medially; subbasal
punctures few; foveae deep, attaining the base; impressions obsolete;
elytra shorter and more oblong-oval, scarcely one-half longer than
wide and three-sevenths wider than the prothorax, more regularly
rounded behind in apical two-fifths, the sides gradually more arcu-
ate basally; subapical sinus shorter and distinct; reflexed margin
rufous; striae rather fine but more impressed, the punctures much
more distinct, minutely crenulating the intervals, which are slightly
more convex; seventh stria evident throughout, though merely a
series of fine punctures except apically. Length ( 9 ) 7.0 mm.; width
2.4-2.5 mm. Florida (Dunedin), — Blatchley concinnus n. sp.

The species named lateralis above, I received under the name
reflexus Lee., but there are only five discal striae on the elytra, the
sixth and seventh barely traceable, and, if such a remarkable and
wholly exceptional character as this exists in reflexus, from Tampa,
it surely would have been mentioned by the describer. Again the
elytra in reflexus are said to be not wider than the prothorax; this
is in all probability not rigorously true, as the hind body is always
at least somewhat wider than the prothorax in this genus, but the
language used seems to show that the difference in width in the
case of reflexus must be very slight; it is very pronounced in later-
alis. LeConte, although laying considerable stress upon the par-
tial obliteration of the incised line along the apical thoracic margin
in crenatus and tceniatus, unaccountably makes no allusion to the
still more complete obliteration of this line in saphyrinus; it is simi-
larly obsolete in lateralis and presumably also in reflexus, being, in
the case of these larger species, to some extent correlated with the
basally broadly reflexed sides of the prothorax.

Some of the small species above described, such as suturalis and
cervicalis, are apparently rather closely allied to velox Dej., but the

392 MEMOIRS ON THE COLEOPTERA

description of the latter states that the prothorax is not at all nar-
rowed anteriorly; the narrowing of the apex is slight though ob-
vious in suturalis and very pronounced in cervicalis. Other differ-
ences would undoubtedly become evident if the type of velox were
available for comparison, as its habitat is quite different from ex-
treme southern Florida, a large proportion of the species of which
are peculiar to that region and, in many cases, more nearly allied
to Cuban than to more northern Atlantic species.

The species described under the name parallelus seems to be the
closest approach to micans Chd., from Opelousas, Louisiana, that
I have in my collection, but in micans the legs are bicolored, the
femora being darker than the tibiae and tarsi, and the surface be-
tween the thoracic fovese and the sides is flat; in parallelus it is
convex. In micans the apical thoracic incised line is said to be
wholly interrupted in the middle; it is deep and entire in parallelus;
the elytra also seem to be more abbreviated and oval in the former.
The interrupted incised. line in micans seems to be similar to that
described above in ludovicianus, but the latter is a larger species,
with uniformly dark rufous legs, and the elytral striae are very finely
and not "fortement" punctured.

I was at first disposed to identify cursitans as floridanus Lee.,
but the author states that in the latter species the elytra are iri-
descent and the striae feebly and finely punctulate, neither of which
characters will fit the more southern cursitans. The species in-
guietus and velocipes, of the table, are both allied more closely to
erraticus Dej., than to any other described thus far, but in the latter
the sides of the prothorax are said to be slightly sinuate basally
and to form an angle with the base which is "tout-a-fait droit."
The legs in inquietus are differently colored, all the femora being
described as blackish-brown in erraticus, and in velocipes the strial
intervals are flatter. Although from an extreme southern latitude,
the species above described as celer Dej., seems to fit the author's
description, especially in the very fine strial punctures; in concinnus
these punctures are much more conspicuous and the bodily form is
quite different.

In Loxandrus the mentum tooth constitutes a peculiar exception
among the Pterostichinas, being very thin, flat, diaphanous and
trapezoidal, with the apex more or less strongly and evenly rounded.

PTEROSTICHIN^: 393

In Piesmus the tooth is nearly similar in outline, but the surface
slopes anteriorly, the posterior limit of the slope marked by a prom-
inent line, wholly unobservable in Loxandrus. The male in Lox-
andrus has one, the female two, apical setigerous punctures at each
side of the last ventral segment.

Ill— OBSERVATIONS ON THE AMERICAN POGONIN^,

INCLUDING TRECHUS.

The Pogoninee, as organized by LeConte and Horn, comprise
but few genera, but these differ from each other very much in gen-
eral habitus, as well as special structural characters, and the usual
custom now is to restrict the Pogoninae to Pogonus and a few related
genera and subgenera, such as Cardioderus , Syrdenus and Pogonistes
and to make of Trechns, Anophthalrmis, Patrobus and some others
a separate subfamily — the Trechinae; but, as my material will not
permit me to go deeply into the subject, I desire at the present time
to give synopses of merely the four genera Patrobus, Platidius,
Trechns and Anatrechus, as now represented in my collection.

Patrobus Steph.

The body in this genus is of moderate to rather small size, some-
what ventricose, with moderate head, prominent eyes and very
slender palpi, the last joint of the maxillary always distinctly longer
than the third. The prothorax is more or less cordiform, with very
deep basal foveae, which are irregularly rounded and always coarsely
punctate and with a short fine carina near the lateral edge basally,
the median stria deep, subentire and becoming coarser and deeper
at base; the anterior transverse impression is punctate and usually
deep, but in some species, such as Iceviceps and insularis, it becomes
obsolete medially, leaving only a somewhat evident broad apical
beading. The elytra have punctured striae, the scutellar always
long and parallel to the suture, the first stria gradually outwardly
oblique at base, ending near the point of origin of the second stria.
The subapical sinus is subobsolete, the base not margined, except
by a slight incurvature of the lateral margin, and the submarginal
line of ocellate punctures is feebly developed. The discal punc-
tures are three in number, but in rnfipes, LeConte mentions four—
possibly however an abnormal condition. The legs and tarsi are
slender, the male having the first two joints of the anterior tarsi
very moderately dilated. The sterna are all coarsely punctured as

394

POGONIN/E 395

a rule, except medially. Excepting longicornis Say, the species occur
only in very cold climates; those before me are in great part unde-
scribed hitherto and may be known as follows:

Frontal sulci long and deep, coarsely impressed 2

Frontal sulci very short and feeble, almost obsolete 4

2 — Anterior transverse impression of the pronotum coarse, deep, groove-
like and impunctate. Body larger, broader and more convex, pol-
ished; head three-fourths as wide as the prothorax, with very prom-
inent eyes; last palpal joint two-fifths longer than the third; basal
constriction scarcely punctate; prothorax nearly one-half wider than
long, cordate, the sides evenly and moderately reflexed throughout
the length, sinuate basally, the basal angles not rounded, the apical
rather broadly; stria deep, coarsely sulciform at base; foveae large,
deep and cavernous, the carina feeble; elytra widest slightly behind
the middle, the striae coarse, very deep and strongly punctate, rap-
idly obsolete laterally; under surface piceous, the legs notably pale
flavo-testaceous. Length (cf 9 ) 11.0-13.5 mm.; width 3.9-4.8 mm.
Rhode Island to North Carolina (Asheville) and northward to Du-
luth. Abundant. [Feronia longicornis Say; P. americanus Dej.]

longicornis Say

Anterior impression coarsely and diffusedly punctate; body much smaller
and narrower, the elytral stria? finer and less impressed, the legs

darker 3

3 — Color black, the elytra obscure rufous, darker basally; under surface
rufous, blackish anteriorly, the legs dark rufous, the femora some-
times darker; elytra less shining in the female; head four-fifths as
wide as the prothorax, with very prominent eyes and small rounded
mandibles; basal constriction diffusedly punctate; antennae dark ru-
fous, sometimes piceous basally, rather long and slender, fully half as
long as the body in the male; prothorax a third (c/1) to one-half (9 )
wider than long, widest two-fifths from the apex, the sides rounded,
becoming strongly sinuate, then parallel, basally, the angles sharp
but not prominent, the margins well reflexed, more narrowly toward
apex; anterior impression shallow but with numerous coarse diffused
punctures, the stria coarsely sulciform at base; foveae deep, coarsely
punctate, bistriate, the carina sharply marked; elytra oblong-sub-
oval, widest behind the middle, two-thirds longer than wide and
nearly one-half wider than the prothorax; apex gradually rounded;
sides but just visibly arcuate, rapidly rounding for a short distance at
the humeri; striae rather fine, bill slightly impressed suturally and
distinctly punctured except apically, where they become gradually
very fine, the seventh fine but distinct, the eighth moderately coarse;
third interval with three punctures. Length (cf 9 ) 9.5-10.5 mm.;
width 2.8-3.3 mm. Labrador (W. St. Modest), — Sherman. Two

examples labradorinus n. sp.

Color black, slightly rufescent posteriorly beneath, the legs dark rufous;
body smaller and narrower than in the preceding, the head similar
but with smaller and scarcely so prominent eyes and with the man-

396 MEMOIRS ON THE COLEOPTERA

dibles more expanded beneath basally; antennae slightly shorter and
thicker; prothorax narrower, less than a third wider than long, the
sides less strongly rounded anteriorly and rather less sinuate basally,
more broadly and equally reflexed throughout the length, otherwise
nearly as in labradorinus, the median stria similarly coarsely sulci-
form basally; elytra not quite so elongate, otherwise nearly as in
the preceding, though not so noticeably swollen behind the middle
and with the striae much less evanescent posteriorly, being subequal
in strength throughout the length; met-episterna more finely and
feebly punctate. Length (cf) 8.6 mm.; width 2.6 mm. Labrador
(W. St. Modest), — Sherman minuens n. sp.

Color black, the elytra piceous and scarcely so shining in the female,
piceo-rufous beneath, the legs obscure rufous; head well developed,
with large and very prominent eyes, the basal constriction narrow
- and deep; mandibles small; antennae rather long and slender, black;
prothorax a third to nearly half wider than long, the sides evenly
rounded, sinuate basally, parallel in basal fourth, the angles sharp,
sometimes slightly prominent; margin deeply and subevenly but
not broadly reflexed; anterior impression rather deep, very coarsely,
diffusedly punctate; median stria deep but, unlike the two preceding,
only slightly coarser or deeper basally; foveae large, deep, coarsely
punctate, obscurely bistriate, the carina moderate; elytra two-thirds
to three-fourths longer than wide, about one-half wider than the
prothorax and not obviously swollen behind the middle, gradually
evenly rounded behind; striae distinctly impressed suturally (cf),
less so (9 ), distinct though finer to the apex, the punctures strong,
less so in the female, the seventh stria very fine in both sexes; third
interval with the usual three punctures. Length (cf 9 ) 8.8-9.6
mm.; width 2.9-3.2 mm. Michigan (Marquette), — Sherman.
[Pterostichtis tenuis Lee.] tenuis Lee.

4 — Form subparallel, black, the under surface rufous, darker anteriorly,
the legs rufous; head fully three-fourths as wide as the prothorax,
the eyes moderately large and prominent; basal constriction coarse,
entire, punctate; mandibles small, rounded externally; epistoma
transversely tumescent at the middle; antennae rufo-piceous, half as
long as the body; prothorax rather large, two-fifths wider than long,
the sides evenly rounded, sinuate posteriorly, becoming parallel in
about basal fifth or sixth, finely, subevenly reflexed throughout the
length; basal angles right, slightly blunt at tip; base and apex equal
t in width; anterior impression wholly obsolete, with a few scattered
punctures, the apical beading feeble; median stria but slightly coarser
and deeper basally; foveae only moderately deep, punctate, the car-
ina fine and feeble; elytra three-fourths longer than wide, only a
fourth wider than the prothorax, not distinctly inflated posteriorly,
very gradually rounding at the sides posteriorly; sides less abruptly
rounded at the humeri than in the preceding species; striae very fee-
ble, finely, indistinctly and irregularly punctulate, the seventh al-
most obsolete, all but the first and eighth obsolete at tip; intervals
nearly flat, the third remotely tripunctate; prosternum alone very

POGONIN^E 397

coarsely punctate. Length (cf) 8.5 mm.; width 2.8 mm. Labra-
dor (W. St. Modest), — Sherman laeviceps n. sp.

Form rather slender, not quite so parallel, shining, rufous, the head and
prothorax somewhat darker; legs rufous; head three-fourths as wide
as the prothorax, with rather large and moderately prominent eyes;
nuchal constriction deep, punctate; anterior sulci very short, feeble
and irregular; epistoma with a transverse ridge, feebler and straighter
than in the preceding; antenna much shorter and thicker, rufous,
much less than half as long as the body; prothorax a fourth to two-
fifths wider than long, the sides broadly, evenly rounded and finely
reflexed, becoming parallel in basal fifth or sixth, the angles right
and sharp; anterior impression obsolete, with a very few punctures,
the apical beading subobsolete medially; median stria only a little
coarser but very deep basally; foveae smaller than usual, rather deep,
punctate and distinctly binary, the carina distinct, very close to the
edge; elytra three-fourths longer to nearly twice as long as wide, two-
fifths wider than the prothorax, very gradually arcuately narrowing
behind; striae fine, slightly impressed suturally, the discal obsolete
at apex; punctures very fine and slightly uneven, close-set; outer
striae very feeble; third interval remotely tripunctate. Length
(cf 9 ) 8.0-9.0 mm.; width 2.7-3.0 mm. Alaska (St. Paul Island).
A large series. insularis n. sp.

The species labradorinus, minuens and tennis have been united
with septentrionis Dej., in our collections and lists, but they are
apparently not the same; septentrionis has been traced from north-
ern Europe to Kamchatka, but probably does not cross the Rocky
Mountain divide, the species of eastern North America being almost
invariably distinct from the Pacific species — even in comparatively
northern latitudes. The multiplicity of species, as shown above,
they sometimes being abundantly distinct among themselves, as
in the case of tennis and labradorinus, tends to prove that all are
distinct from septentrionis. Septentrionis is usually compared with
excavatus Payk. (rufipes Duft.) and was for a long time considered
identical, but a specimen of the latter now before me, differs much
from the three species mentioned, in its more abbreviated form, evi-
dent subapical sinus of the elytra and in having th'e median stria of
the pronotum but little coarser basally, differing in this way from
labradorinus and minuens but resembling tenuis; this, however, has
a larger head, with very much larger and more prominent eyes.
Rufipes Lee., may or may not be still another species; I have not
been able to view the type, which seems to be larger in size than any
of the above — 10 mm., according to the record. Insularis may be
allied to fulvus Mann., from Kodiak Island, but there is nothing to

398 MEMOIRS ON THE COLEOPTERA

indicate this in the description, from which it may be inferred that
the frontal sulci are normally long and deep in fufaus, which is
besides an evidently larger species — 10 mm. in length.

Platidius Chd.

The uniting of this genus — which seems to be wholly peculiar to
the western parts of North America — with Patrobus, is inexplicable.
Typically it bears no close resemblance to Patrobus, differing in the
more parallel and subdepressed form of the body, thicker palpi and
more developed mandibles, absence of deep pronotal foveae and in
the acutely pointed hind trochanters, which sometimes attain al-
most the length of the femora in the males; it differs also in the im-
punctate sterna. As a remarkable peculiarity, it should be stated
that a minute nick in the sides of the prothorax just before the basal
angles is usually evident and, in incisus, this becomes a rather con-
spicuous character; it seems to be wholly wanting in Patrobus, where
the hind trochanters are short and obtuse in both sexes. In Pla-
tidius the eyes are relatively smaller and much less prominent than
in Patrobus, and the feebly impressed latero-basal part of the pro-
notum is very finely punctulate or rugulose, contrasting greatly
with the coarse punctures of Patrobus. Our species are moderately
numerous and, so far as known to me, may be described as follows:

Prothorax nearly as long as wide, subquadrate; size larger as a rule; hind
wings well developed 2

Prothorax shorter, transverse and subcordiform; pronotum more sharply
punctulate and with the punctures extending from side to side bas-
ally ; hind trochanters shorter though acutely pointed 7

2 — Latero-basal part of the pronotum broadly, very feebly and subevenly
impressed and punctulato-rugulose 3

Latero-basal part similarly sculptured, but with a more definite shallow
foveiform impression remote from the side margin, the carina less
obsolete than in the preceding section 5

3 — Mandibles smaller, less prominent. Body relatively broader than in
the two following, rather dullish, deep black, the legs black; head
large, elongate, nearly four-fifths as wide as the prothorax, the sulci
long, deep, extending to the middle of the epistoma; eyes moderate,
not very prominent; antennae black, extending well behind the tho-
racic base and rather thick; prothorax just visibly wider than long,
widest just before the middle, where the sides are rounded, thence
feebly converging anteriad and arcuately feebly converging poster-
iad, becoming very feebly sinuate, the edge sometimes feebly crenu-
late, feebly and narrowly reflexed, rapidly more broadly so near the
rounded apical angles; base as wide as the sinuato-truncate apex,

POGONIN^E 399

very oblique at each side, the angles right and sharp, the nick dis-
tinct; impressions very feeble and diffuse, the posterior feebly punc-
tulate medially; median stria deep, biabbreviated, not deeper be-
hind; elytra three-fifths longer than wide, parallel and with nearly
straight sides, rounding basally, the margin incurvate at base for
a short distance, nearly one-half wider than the prothorax, somewhat
obtuse at tip, the sinus very feeble; surface subdeplanate laterally
at apex, as usual in the genus; striae fine, feebly impressed, not def-
initely punctate, the outer feeble, the ninth midway between the
eighth and margin; third tripunctate, the scutellar long as usual;
intervals very feebly convex. Male with the anterior tarsi rather
stouter and more convex than usual in the genus, the hind trochan-
ters acicularly narrowed and prolonged in apical half and almost as
long as the tibiae, two-fifths as long as the latter and simply pointed
in the female. Length ((^9) 10.5-13.2 mm.; width 4.0-4.7 mm.
California (Mendocino and Humboldt Cos.). Six specimens.

latipennis n. sp.

Mandibles notably longer and more prominent in both sexes 4

4 — Body smaller and more slender than in latipennis, similar in color and
in the rather dullish lustre; male more notably smaller than the fe-
male; head slightly narrower than the prothorax, the eyes more prom-
inent than usual in the genus; sulci long, very broad and deep,
slightly converging; antennae rather long, not so thick as in latipen-
nis; prothorax nearly similar throughout but smaller, with the sides
usually more distinctly sinuate basally; vestiges of a fine carina more
evident; elytra narrower though of nearly similar outline, structure
and striation, fully two-thirds longer than wide and nearly one-half
wider than the prothorax. Male with the anterior tarsi rather less
stout, the hind trochanters three-fourths as long as the tibiae, grad-
ually finely aciculate in less than apical half. Length (cf 9 ) 10.0-
12. o mm.; width 3.7-4.0 mm. California (Sonoma and Mendocino

Cos.). [Pair, trochantericus Lee.] californicus Mots.

Body nearly as in californicus but much larger, more elongate and larger
than in latipennis, similar in coloration and lustre; head and pro-
thorax larger than in the preceding, the former with less prominent
eyes and less constricted and much broader neck; antennae long,
more pallescent distally, the sulci similar; prothorax slightly though
evidently wider than long, as in the two preceding in general form
and structure, the short carina near the hind angles very feeble and
vestigial; minute nick before the hind angles distinct; elytra notably
elongate, fully three-fourths longer than wide, less than one-half
wider than the prothorax, similar to the two preceding in general
outline, striation and structure, the three punctures on the third
stria more broadly impressed, equidistant and widely separated as
usual; hind trochanters of the male gradually finely aciculate and
more or less contorted distally and almost as long as the tibiae;
in the female they are gradually sharply pointed and half as long as
the tibiae; anterior tarsi of the male notably stout basally. Length
(cf 9 ) 13.0-15.0 mm.; width 4.4-4.8 mm. California (south of San
Francisco) , — Dunn incisus n. sp.

400 MEMOIRS ON THE COLEOPTERA

5 — Mandibles long and prominent in both sexes. Body larger than in
any other species, rather stout, subparallel, deep black, more shin-
ing than usual; head large and elongate, only very slightly contracted
at base, the eyes scarcely more prominent than the tumid sides be-
hind them; sulci very coarse; epistoma tumid in anterior half; an-
tennae black, not very thick, extending behind the thoracic base;
prothorax large, only slightly wider than long, widest at the middle,
the sides feebly converging thence anteriad, feebly oblique but not
sinuate toward the hind angles, feebly reflexed, the edge finely and
abruptly erect and, toward the rounded, anteriorly produced and
lobiform apical angles, becoming conspicuously and broadly reflexed;
base sinuously very oblique at the sides, the angles scarcely more
than right, the nick distinct though shallow; transverse impressions
distinct but diffuse, the rather fine deep and even stria biabbreviated;
inner fovea very large, shallow and diffuse, the outer narrow and
short but more sharply defined; elytra oblong, parallel, two-thirds
longer than wide, scarcely a third wider than the prothorax, sub-
circularly rounded at tip; striae not very fine and distinctly impressed,
the outer less so though distinct and feebly punctate; intervals con-
vex; anterior tarsi (cf ) only slightly dilated, the tibia broadly arcu-
ate, the inner tooth near apex distinct; hind trochanters gradually
aciculate, three-fourths as long as the tibiae, the tibia feebly sig-
moid. Length (cf) 14.5-15.5 mm.; width 5.2-5.4 mm. Washing-
ton State. Two examples strenuus n. sp.

Mandibles rather short, more rounded externally 6

6 — Form parallel, slightly convex, deep black, more polished than usual;
head fully two-thirds as wide as the prothorax, subquadrate, the
neck almost as wide as the distance across the eyes, which are not
prominent; sulci long, very broad and deep, parallel; epistoma nearly
flat, with a feeble foveiform impression at base; antennae black, rather
stout, extending but slightly behind the thoracic base; prothorax
large, barely at all wider than long, equally wide at base and apex
as usual in this genus, widest at the middle, the sides very feebly
arcuate, nearly straight, subparallel and feebly crenulate anteriad,
barely at all converging and just visibly sinuate posteriad; base ob-
lique at the sides, the angles slightly blunt, the nick distinct; sides
feebly reflexed, the lobiform apical angles rounded and broadly
deplanato-reflexed; apex subtruncate; impressions feeble but evi-
dent, the stria biabbreviated; inner fovea large, shallow and finely
scabrous, the outer a fine sharp impressed line, not delimiting a car-
ina; elytra parallel, with straight sides which rapidly round at base,
three-fourths longer than wide, not a third wider than the prothorax;
striae rather feebly impressed, not fine and very minutely punctulate;
intervals nearly flat. Male with the anterior tibiae broadly arcuate,
the femora obtusely dentate beneath at the middle, the tarsi feebly
dilated; hind tibiae strongly sigmoid, with longer and closer coarse
hairs within, except basally, the trochanters gradually finely acic-
ulate and subequal in length to the femora. Length (cf ) 12.7-14.0
mm.; width 4.6-4.8 mm. -Nevada (Reno). Two specimens.

rectus n. sp.

POGONIN.E 401

Form less parallel, the anterior parts relatively smaller, body smaller in
size, similar in the deep black color, the surface slightly less shining;
head not quite so large, though two-thirds as wide as the prothorax,
less broad at base, the eyes more convex and distinctly more prom-
inent; sulci very broad and deep, parallel; antennae nearly similar;
prothorax slightly though more evidently wider than long, in gen-
eral similar to that of rectns, though relatively smaller in size and
with the apical angles less conspicuously lobed, the sides basally more
distinctly sinuate and the inner fovea shallower and less definite,
the outer an almost similar short, finely and feebly incised line;
elytra similar but narrower, less obtuse at apex and fully two-fifths
wider than the prothorax, the striae finer but more evidently im-
pressed, the outer striae less obsolete and the punctulation very fine
and feeble. Male with the anterior tarsi very moderately inflated,
the tibiae apically more bent, the femora not dentate beneath; pos-
terior tibiae less sigmoid and with less conspicuous hairs within, the
trochanters gradually finely aciculate and four-fifths as long as the
femora; in the female they are more rapidly and obtusely pointed
and two-fifths as long as the femora. Length (6cf, 89) 12.0-13.0
mm.; width 4.1-4.5 mm. California (Mokelumne Hill, Calaveras
Co.) and Nevada (Reno) sierranus n. sp.

Form much more abbreviated and very much smaller in size, similar in
color and lustre to the preceding; head nearly four-fifths as wide as
the prothorax, with notably convex and prominent eyes, the coarse
sulci divided each into two large deep fovese in the type; antennae
black, rather thicker and distinctly shorter than in either of the pre-
ceding, as seen especially in the shorter third joint; nuchal constric-
tion shallow, with minute sparse punctulation; prothorax in. nearly
all respects as in sierranus. except that the inner shallow fovea is
more sharply defined and the outer one a deeper and more conspicu-
uous short incised line, and also that the basal margin is slightly
beaded toward the sides; elytra similar but very much shorter, not
quite one-half longer than wide, one-half wider than the prothorax.
Male with the anterior femora very obtusely angulate at the middle
beneath, the tibiae but feebly arcuate distally and the tarsi scarcely
at all dilated; posterior tibiae feebly sigmoid, distinctly pubescent
within and with the trochanters rapidly finely aciculate distally and
scarcely more than two-thirds as long as the femora. Length (cf )
9.0 mm.; width 3.7 mm. Nevada (Reno). One example.

breviusculus n. sp.

7 — Head, exclusive of mandibles, fully as wide as long, the neck very
short, the mandibles very small, acute though only feebly inflexed
at tip. Body rather narrow, feebly depressed, black in color, the
legs black, the trochanters rufous; head three-fourths as wide as.
the prothorax, the eyes notably prominent, the sulci long, deep,
slightly converging, extending beyond the middle of the epistoma;
antennae moderate, rather slender, black; prothorax two-fifths wider
than long, widest just before the middle, slightly narrowed thence
to the broadly rounded apical angles, oblique and sinuate poste-
T. L. Casey, Mem. Col. VIII, Oct. 1918.

4O2 MEMOIRS ON THE COLEOPTERA

riorly, becoming subparallel in about basal fifth; base as wide as the
distinctly sinuate apex, only feebly oblique laterally; anterior im-
pression distinct, subangulate, the posterior not distinct, very dif-
fuse; foveae large, shallow, the outer wanting; side margins broadly
reflexed; hind angles sharp, the nick obsolete as* usual in this section;
elytra three-fourths longer than wide, not quite one-half wider than
the prothorax, parallel, the sides gradually rounding behind, with-
out sinus, gradually arcuate basally; striae moderate, deeper api-
cally, distinctly impressed and obsoletely punctulate suturally, the
seventh distinct, the ninth very fine, the space between the eighth
and margin much narrower than in the preceding section, the ocel-
late series entire but fine. Male with the anterior femora angulate
beneath behind the middle, the tibiae straight, the tarsi with the
first two joints very feebly dilated; posterior trochanters much less
than half the femoral length and acutely pointed; last ventral with
a single very small apical puncture far to each side; female with two
close-set punctures at each side, the hind trochanters more obtuse,
scarcely more than a fourth the femoral length. Length (cf 9 )
10.0-10.5 mm.; width 3.5-3.6 mm. The female the smaller. Colo-
rado (Boulder Co.) breviceps n. sp.

Head slightly to distinctly longer than wide, the neck less abbreviated;

mandibles more prominent and more incurved at tip 8

8 — Space between the eighth elytral stria and the margin narrower than
the eighth interval as in the preceding; frontal sulci extending at
least to the middle of the epistoma; antennae moderately long and

slender; elytra narrower, parallel 9

Space between the eighth stria and the sides as wide as the eighth inter-
val, the elytra broader and more oblong-suboval; frontal sulci ex-
tending to but not upon the epistoma; antennae notably longer and

more slender 10

9 — Form moderately narrow, subparallel and feebly convex, dark piceous-
brown in color, the femora blackish; head nearly three-fourths as
wide as the prothorax, the eyes well developed but only moderately
prominent; sulci long, coarsely impressed and subparallel; antennae
dark rufous, half as long as the body; prothorax not quite two-fifths
wider than long, the sides broadly reflexed, subevenly rounded, be-
coming subparallel in about basal sixth; base rather wider than the
moderately sinuate apex, only slightly oblique laterally, the angles
sharply defined, the anterior moderately blunt; impressions distinct,
the posterior more obsolete medially in the female; fovese distinctly
impressed, rugulose, the outer evident but feeble, linear; elytra three-
fourths to four-fifths longer than wide, a third, or more (9 ), wider
than the prothorax, the parallel sides rapidly more rounded at the
humeri, gradually subcircularly rounded at apex, the sinus wholly
wanting; striae fine but everywhere distinct, not at all less so apically,
evidently impressed suturally throughout but barely at all punctu-
late, the third with the usual three punctures. Male with the an-
terior femora evenly and feebly arcuate beneath, the tibiae straight
and the tarsi more inflated than in the preceding, though moderately;
hind trochanters a third as long as the femora, sharply pointed, the

POGONIN^E 403

tibiae but feebly curved outwardly toward tip and with the inner erect
hairs short; hind tarsi very slender and not much shorter than the
tibiae. Length (40", 29) 9.0-10.3 mm.; width 3.25-3.5 mm. Col-
orado. Levette collection tenuitarsis n. sp.

Form elongate, subparallel, rather depressed, shining, deep black, the
legs black with rufous trochanters; head elongate, fully two-thirds
as wide as the prothorax, the eyes moderate and not very prominent;
sulci long and deep; palpi and antennae black, the latter rather long
and slender; prothorax transverse and about one-half wider than
long, the sides rounded and well reflexed, sinuate basally and par-
allel in about basal sixth, the angles more than right but well de-
fined; base feebly oblique laterally, as wide as the distinctly sinuate
apex, the apical angles rounded and very obtuse; anterior impres-
sion deep and with a few fine punctures, the posterior obsolete;
basal punctures numerous and very clearly defined; foveae shallow,
the exterior very short and acutely linear; elytra long, but little less
than twice as long as wide, two-fifths wider than the prothorax, grad-
ually ogival apically, without trace of sinus; sides nearly straight,
gradually rounding basally; striae acutely deep and strong through-
out, even coarser and deeper at apex, still more impressed suturally,
minutely punctulate "basally, the seventh entire and rather deep, the
eighth not quite attaining^ the apex; intervals moderately convex.
Male with the anterior femora distinctly dentate beneath at basal
third, the tibiae straight, with strong inner subapical tooth, the tarsi
only just visibly enlarged basally; hind trochanters slightly less
than half the femoral length, sharp, the tarsi slender, black, long
though distinctly shorter than the nearly straight tibiae. Length
(cf) n.o mm.; width 3.8 mm. Colorado (Red Cliff), — -Wickham.

coloradensis n. sp.

Form nearly as in the preceding, black, the legs black or piceous, shining,
the elytra dullish in the female as usual; head slightly elongate, with
moderately prominent eyes and long deep sulci; antennae rufo-pice-
ous, moderately long and slender; prothorax less transverse and less
rounded at the sides than in the preceding, a third wider than long;
sides broadly and strongly reflexed, feebly oblique and sinuate bas-
ally, becoming not quite parallel toward the very sharp and subprom-
inent angles; base oblique at the sides; apex sinuate, with rounded
angles; impressions and biabbreviated stria nearly as in the preced-
ing; inner fovea deep, sublinear, broadly impressed, the outer very
short, feebly defined; elytra three-fourths longer than wide, not
quite one-half wider than the prothorax, very feebly inflated pos-
teriorly, gradually ogival apically, the sides gradually rounding bas-
ally, the sinus completely wanting; striae fine, acute but not conspic-
uous, not punctate, the inner equally distinct and barely impressed
to the apex, the outer very fine and feeble, not entire, the eighth
abbreviated on the broad latero-apical declivity; intervals nearly
flat. Length (9) n.o mm.; width 3.8 mm. Colorado. Levette
collection reflexus n. sp.

10 — Body more oblong-suboval in form, feebly convex, deep black and
very shining; legs black, the coxae rufous, the abdomen rufescent

404 MEMOIRS ON THE COLEOPTERA

apically; head rather elongate, more than three-fourths as wide as
the prothorax, with prominent mandibles, extremely broad deep
sulci and rather prominent though moderate eyes; antennae piceous,
very slender, much more than half as long as the body; nuchal con-
striction very feeble and diffuse, with fine punctures; prothorax two-
fifths wider than long, widest at the middle, the sides thence feebly
converging and nearly straight to the broadly rounded apical angles,
broadly and moderately sinuate basally, becoming very gradually
parallel in about basal sixth, the angles right and sharply defined;
margins reflexed, deeply so only in apical half; apex feebly sinuate,
transverse; impressions both evident but feeble and diffuse, both
plentifully and sharply punctulate; stria deep, biabbreviated; foveae
broadly and deeply impressed, sublinear, the outer short, linear,
feeble and indefinite; elytra three-fourths longer than wide, one-half
wider than the prothorax, gradually ogival in nearly apical half, with
long and very feeble sinus; sides very gradually a little more arcuate
basally; striae fine but sharp, finely punctulate, evidently impressed,
rather deeply so inwardly, entire, the seventh distinct and impressed,
the ninth midway between the eighth and margin; intervals feebly
convex. Length (9) 10.5 mm.; width 4.0 mm. California (Red_
wood Creekr, Humboldt Co.)' filicornis n. sp

The elytra in this genus and Patrobus are very much as in Ptero-
stichinse, resembling them especially in the disposition of the ninth
stria, but they differ in having no basal margination and in the rather
conspicuous declivo-explanate postero-lateral part of the surface,
which is feebly traceable also in Pogonus. The five last described
species of the table are doubtless allied to the Alaskan aterrimus
Dej., which I have not seen, and they approach the genus Patrobus
more closely in general outline, and especially in the more cordiform
prothorax, than they do the larger parallel forms with greatly de-
veloped male hind trochanters; but that they do not strictly form
a bond between the two genera, can be shown by the system of
sculpture, form of the pronotal foveae and sexual modifications of
the hind trochanters, which are exactly of the same nature as in
the larger species, though less developed; also by the feeble nuchal
constriction, more flattened upper surface of the body and general
habitus.

The first elytral stria is bent outwardly toward base, ending in
the ocellate puncture at the base of the second stria; the long scu-
tellar stria lies between the basal part of the first and the scutellum
and basal part of .the suture, and is not connected in any way with
the ocellate puncture, as is usual with the scutellar stria. I have
noticed this same peculiarity in Trechns. In Anophihalmus there

405

is no scutellar stria, the first ending at base in a large dilatation,
which includes the minute elevated subscutellar tubercle — not a
puncture in this case or in Trechus. This unusual disposition of
the basal part of the first stria and the scutellar stria, is very differ-
ent from that characterizing the Pterostichinae, where the scutellar
stria lies between the first and second striae and proceeds directly
from the ocellate puncture, but I have noted in some Evarthrids,
as an abnormal feature, that the first stria may be deflected at
base, becoming coincident with the scutellar stria and ending in
the puncture, the true base of the first stria being disconnected and
free. By evolution this detached basal part of the first stria, has
become the regular scutellar stria in the Pogonid genera, the first
regular stria being always and normally deflected outwardly at base
to the ocellate puncture.

Trechus Clairv.

This genus of comparatively minute species— when compared
with the preceding genera, together with Anophthalmus, differs very
greatly from the preceding types in having the hind body narrowly
pedunculate and in having the fourth palpal joint slender, acicu-
late and frequently longer than the third, though in Anatrechus,
defined below, the maxillary palpi are much thicker than in Trechus,
approaching the structure seen in Patrobus. In Trechus the frontal
sulci are usually more prolonged and outwardly curvate posteriorly
than in Patrobus. The elytra are nearly similar in general structure,
except that there is at apex a coarse deep arcuate prolongation of
the fine fifth stria, which is absent in Patrobus and related genera.
The legs and trochanters are unmodified as in Patrobus, but the
general structure of the under surface is similar. There is a single
puncture at each side of the abdominal tip in both sexes and the
posterior of the three dorsal punctures of the elytra is very near
the apex.

Trechus and Anophthalmus are both enormously developed in the
European fauna, but they are comparatively poor in species and
rare in individuals in North America. Our very moderate number
of Trechus species may be known as follows:

Outline more nearly parallel, the hind body oblong-suboval 2

Outline strongly ventricose, the hind body more inflated and ovulate. .8
2 — Eyes rather large and prominent. Pacific coast fauna 3

406 MEMOIRS ON THE COLEOPTERA

Eyes moderate to small, less prominent. Atlantic coast fauna 5

3 — Color rufo-piceous, the prothorax paler and more testaceous. Under
surface obscure rufous, the legs paler; antennae long and filiform, pic-
eous; head shorter than wide, three-fourths as wide as the prothorax,
the sulci subinterrupted; fourth palpal joint scarcely as long as the
third; prothorax short and transverse, fully two-thirds wider than
long, subevenly rounded at the sides, the latter finely reflexed, more
so near the basal angles as usual, the angles more than right, sharp,
minutely subprominent at tip; base evidently wider than the feebly
sinuate apex; impressions distinct, the anterior near the margin;
stria not coarse but deeply impressed, abbreviated in front; foveae
deep, remote from the sides; elytra one-half longer than wide, a
third wider than the prothorax (cf), slightly more (9), subevenly
rounded behind from a little beyond the middle; striae rather fine,
only feebly impressed and with small punctures internally, gradu-
ally becoming obsolete externally. Length (cT 9 ) 3-7~4-2 mm.;
width 1.35-1.6 mm. British Columbia (Stickine River), — Wick-
ham. Sitka, — Motschulsky. An ample series. . . californicus Mots.

Color black to piceous-black, the prothorax not or scarcely at all paler
than the elytra, the latter faintly opalescent; legs rufous; body much
stouter in form 4

4 — Body stout, moderately convex; head two-thirds to three-fourths as
wide as the prothorax, not quite as long as wide, the sulci very long,
entire; last palpal joint somewhat longer than the third; antennae
slender, rather long, piceous, paler at base; prothorax much less
transverse than in the preceding, one-half wider than long, the sides
and angles subsimilar; base scarcely at all wider than the apex;
impressions and foveae nearly similar; elytra oblong-suboval, not
quite one-half longer than wide, two-fifths wider than the prothorax,
the arcuate sides moderately reflexed; striae finely punctate, rather
fine, feebly impressed internally, gradually obsolescent externally;
dorsal punctures coarse and conspicuous. Length (d71 9 ) 4.3-4.7
mm.; width 1.45-1.75 mm. California (Siskiyou Co.) and Van-
couver Island. Unalaska Island, — Dejean chalybeus Dej.

Body distinctly more abbreviated and broader, deep black above, pice-
ous beneath, the legs bright rufous; head three-fourths as wide as
the prothorax, about as long as wide, the sulci subinterrupted; palpi
and antennae bright rufo-testaceous throughout, in structure some-
what as in chalybeus; prothorax broader, nearly two-thirds wider
than long, the sides subsimilarly rounded and basally feebly oblique
and straighter, the apices of the basal angles minutely prominent;
impressions and foveae nearly similar; base much broader than the
moderately sinuate apex; elytra notably shorter and broader, with
much more rapidly and broadly obtuse apex, parallel, with feebly
arcuate sides, a third longer than wide, two-fifths wider than the
prothorax; striae moderate, distinctly though not coarsely punctured,
evident throughout the width, gradually more impressed, though
not very deeply, toward the suture; three dorsal punctures not so
coarse as in chalybeus; opalescent lustre scarcely evident. Length

POGONIN.E 4°7

•

(9 ) 4-35 mm.; width 1.7 mm. California (Lake Tahoe). Two ex-
amples tahoensis n. sp.

5 — Color testaceous, the head and prothorax more or less infumate; sides
of the prothorax more strongly arcuate anteriorly and oblique and
straighter for a greater distance thence to the base. Form rather
convex, moderately stout, polished; head three-fourths as wide a.s
the prothorax, the eyes slightly more developed and prominent than
in the following three species, the sulci long, entire; fourth palpal
joint slightly longer than the third; antennae rufous, as long as the
elytra and slightly thickened distally; prothorax not quite one-half
wider than long, widest near apical third, the basal angles minutely
and feebly subprominent; anterior impression deep, subangulate,
the posterior feeble; stria deeply impressed; foveae deep, at lateral
fourth; elytra slightly less than one-half longer than wide, a third
wider than the prothorax, nearly one-half (9), obtusely rounded
at apex; striae inwardly coarse, deep and strongly punctured, feeble
though traceable laterally, the dorsal punctures coarse; intervals
strongly convex suturally. Length (cf 9 ) 3.7-4.0 mm.; width 1.5-
1.6 mm. Minnesota (Duluth) and Wisconsin (Bayfield). [Trechus
fulvusi.ec. (Epaphius Lch.) — -nom. praeocc.]. Eight examples, de-
monstrating the constancy of coloration pallescens nom. nov.

Color black or piceous-black, the elytra feebly opalescent, the anterior
parts not or scarcely paler; sides of the prothorax more evenly arcu-
ate, oblique and nearly straight in about basal half; legs rufous. . .6

6 — Elytra more elongate, fully two-thirds longer than wide; antennae
notably longer, fully as long as the elytra, very slender, evenly fili-
form and rufous. Body notably elongate; head two-thirds as wide
as the prothorax, the long sulci wholly interrupted medially in the
type; eyes moderate, not very prominent; prothorax slightly more
than one-half wider than long, the basal angles well reflexed, obtuse,
not rounded but not at all prominent at tip; anterior impression
fine, linear, the posterior evident; foveae small, deep, just beyond lat-
eral fourth; elytra two-fifths wider than the prothorax, gradually
rounding behind, parallel, with arcuate sides and rather rapidly,
evenly rounded humeri; striae inwardly moderate, rather impressed
and not coarsely but strongly punctate, gradually obsolete later-
ally; intervals evidently convex suturally; dorsal punctures distinct
but not coarse, adjoining the third stria as usual. Length (cf1) 4.4
mm.; width 1.5 mm. Massachusetts (Fall River), — Frost.

puritanus n. sp.

Elytra, less elongate, barely one-half longer than wide; antennae much
shorter, not as long as the elytra in either sex 7

7- — Form moderately stout and convex, shining, blackish-piceous; head
nearly three-fourths as wide as the prothorax, somewhat longer than
wide, the eyes notably small, slightly prominent; sulci subinter-
rupted; antennae very slender, fusco-rufous, slightly compressed dis-
tally; prothorax relatively smaller than in the preceding, one-half
wider than long to slightly less, the basal angles obtuse, with the
tip barely visibly subprominent; base slightly wider than the apex
(cf ), subequal in the smaller prothorax of the female; anterior im-

408 MEMOIRS ON THE COLEOPTERA

pression notably feeble, the posterior more distinct, the stria rather
deep, subentire; foveae small and narrow, deep, at lateral fourth;
elytra two-fifths (cT) to one-half (9) wider than the prothorax,
parallel, with evenly arcuate sides, subcircularly rounded at apex;
striae moderately coarse, impressed and distinctly punctate inwardly,
becoming feeble though easily traceable laterally; dorsal punctures
notably coarse. Length (c? 9 ) 3.8-4.0 mm.; width 1.35-1.45 mm.
Rhode Island (Boston Neck) rhodensis n. sp.

Form nearly as in the preceding but with distinctly smaller prothorax,
the eyes not so small and rather more prominent; head nearly three-
fourths as wide as the prothorax, somewhat elongate, rufescent at
base and apex, the sulci subinterrupted; antennae dark rufous, a
little longer and thicker than in rhodensis and more evidently in-
crassulate distally, less evidently shorter than the elytra; prothorax
one-half wider than long, the basal angles obtuse, sharp but not
prominent; anterior impression subobsolete, the posterior distinct;
fovese much larger, relatively shallower and less definitely limited
than in the preceding species; elytra not quite one-half longer than
wide, almost one-half wider than the prothorax, feebly inflated pos-
teriorly, circularly rounded behind; striae as in rhodensis, the dorsal
punctures coarse. Length (cf) 4.2 mm.; width 1.48 mm. Labra-
dor (W. St. Modest), — Sherman brumalis n. sp.

8 — Elytra each with the normal three discal punctures 9

Elytra each with but two discal punctures, the median constantly want-
ing - 14

9 — Elytra more nearly of the form prevailing in the preceding group,
being oblong-oval. Body piceous-black, moderately convex, shin-
ing, the legs rufous; head not longer than wide, fully four-fifths as
wide as the prothorax, the eyes moderately large but only slightly
prominent; sulci coarse and deep, entire; last palpal joint not as
long as the third; antennae filiform though not very slender, piceous,
rufescent basally, distinctly shorter than the elytra; neck rufescent;
prothorax two-fifths wider than long, the base and apex subequal
in width; basal angles reflexed, obtuse, the tips not prominent; an-
terior and posterior impressions both distinct, the stria subentire;
foveae deep, slightly outside of lateral fourth; elytra one-half longer
than wide, one-half to two-thirds wider than the prothorax, rather
obtusely but evenly, subcircularly rounded at apex, the sides some-
what strongly, evenly arcuate; striae moderate, not clearly punctate,
feebly impressed inwardly, gradually obsolete laterally, the dorsal
punctures very moderate in size. Length (cf 9 ) 4.4-4.6 mm.; width
1.7-1.75 mm. Colorado. Levette collection . saxatilis n. sp.

Elytra more subglobose, less elongate and more convex, the striation
much less developed 10

10 — Elytra with the medial puncture slightly behind the middle of the
length as usual, the striae very fine but rather sharply impressed
suturally 1 1

Elytra with the medial puncture before the middle of the length, the
striae usually indefinite, very fine when visible 13

II — Antennae notably long, very slender and filiform, fully as long as

POGONIN.E 4°9

the elytra or a little longer. Body extremely ventricose, blackish-
piceous with rufous legs, polished; head unusually narrow and elon-
gate, two-thirds as wide as the prothorax, the eyes notably small and
scarcely at all prominent; sulci long, deep and entire; antennae ob-
scure rufous; prothorax relatively very small, a third wider than
long, the evenly rounded and well reflexed sides becoming slightly
sinuate before the acute, sharp and notably prominent basal angles;
base and apex equal in width; anterior impression very fine and lin-
ear, the posterior feeble, the foveae deep, sublinear, at outer fourth;
elytra scarcely a third longer than wide, twice as wide as the pro-
thorax, evenly elliptic-oval and very convex; striae very fine, scarcely
at all impressed, not clearly punctulate, gradually almost obsolete
laterally; dorsal punctures somewhat coarse; sutural stria gradually
coarser and deeper apically. Length (of) 44 mm.; width 2.0 mm.
North Carolina (summit of Black Mts.), — Beutenmiiller.

Carolina Schf.

Antennae not as long as the elytra; hind body much less dilated and not
quite so convex; head less narrow and not elongate, the eyes more
developed 12

12 — Form rather stout, shining, dark rufous, the elytra more clouded;
legs rufous; head fully three-fourths as wide as the prothorax, the
eyes slightly prominent, moderate in size, the sulci long, deep, entire
and strongly arcuate; last palpal joint shorter than the preceding;
antennae filiform though not very slender, obscure rufous, but little
shorter than the elytra; prothorax nearly one-half wider than long,
somewhat wider at base than at apex, the rounded and well reflexed
sides becoming briefly but deeply sinuate at the hind angles, which
are scarcely more reflexed but acute, very sharp and laterally prom-
inent; anterior impression feeble, the posterior coarser and deeper,
both subangular; stria very fine, coarser basally; foveae rather large,
deep though diffuse; elytra two-fifths longer than wide, two-thirds
wider than the prothorax, broadly rounded posteriorly, the humeri
and sides almost coarcuately rounded; striae internally rather fine,
evidently impressed and finely, obscurely punctulate, gradually ob-
solescent laterally, the second as well as fifth with an arcuate apical
groove; scutellar stria rather long and deep; dorsal punctures mod-
erate. Length (cT) 3.8 mm.; width 1.65 mm. Arizona (locality
unrecorded) arizonae n. sp.

Form nearly similar but smoother, more convex and very much smaller
in size — the smallest of the known American species; color piceous-
black, the legs rufous; head moderate, two-thirds as wide as the pro-
thorax, fully as long as wide, the eyes small, scarcely prominent;
sulci deep, entire; last palpal joint very slender, much shorter and
narrower than the third; antennae short, filiform, piceo-rufous, clearer
basally, scarcely four-fifths as long as the elytra, the joints unusually
short; prothorax short, three-fifths wider than long, the rounded
sides oblique and straighter posteriad, very feebly sinuate at the
hind angles, which are right, not very sharp and not prominent;
anterior impression fine, feeble, linear, the posterior coarse and deep;
foveae small, deep, slightly beyond lateral fourth; elytra more oblong-

4i o MEMOIRS ON THE COLEOPTERA

oval, more obtuse at base and apex, the humeri more rounded than
the sides, two-fifths longer than wide and one-half wider than the
prothorax; striae very fine and feeble even suturally and not evidently
punctulate, broadly obsolescent laterally, with the scutellar stria ex-
tremely short; dorsal punctures rather small. Length (cf ) 2.8-3.0
mm.; width 1.2-1.3 mm- North Carolina (Black Mts.), — -Beuten-
miiller. Three examples hydropicus Horn

13 — Body rather stout and convex, female the less; integument shining,
dark rufous, the elytra more or less clouded; head more than three-
fourths as wide as the prothorax, with moderate eyes and long deep
entire sulci; last palpal joint shorter than the fourth; antennae slen-
der, infuscate, clearer basally, not quite as long as the elytra; pro-
thorax small, about one-half wider than long, the sides strongly,
subevenly reflexed, arcuate anteriorly, oblique and straighter pos-
teriad, very faintly sinuate near the angles, which are nearly right
and not at all prominent, though not rounded; anterior impression
subobsolete, the posterior feeble; foveae small, deep, sublinear, at
outer fourth; elytra oval, more obtuse than circular at apex, the
humeri rather more rounded than the sides, nearly three-fourths
wider than the prothorax; striae extremely fine and faint, sometimes
obliterated as sharply marked lines, wholly obsolete externally, not
punctate, the scutellar moderate, the two anterior dorsal punctures
moderately strong, more approximate than usual in this genus.
Length (cf 9 ) 3.6-4.1 mm.; width 1.5-1.75 mm. California (Sta.
Cruz to Humboldt Co.). Nine specimens. [T. Iccvigatus Lee. —
catalogue name.] ovipennis Mots.

14 — Form narrower than in ovipennis but otherwise very similar, testa-
ceous in color and shining; head somewhat longer than wide, scarcely
three-fourths as wide as the prothorax, with rather large and moder-
ately prominent eyes and deep entire sulci, which are not much
curved outwardly behind; fourth palpal joint longer than the third;
antennae pale, about as long as the elytra in the male, or evidently
shorter (9 ); prothorax nearly as in ovipennis, but with broader and
more irregularly impressed foveae, the basal angles similar; elytra
very nearly one-half longer than wide, oval, barely two-thirds wider
than the prothorax, less obtusely rounded at tip than in ovipennis;
sides but little more rounding toward the humeri; striae fine, very
faint and vestigial, the sutural rather more visible, the scutellar
moderate, fine. Length (cf 9 ) 3-4~3-8 mm.; width 1.35-1.55 mm.
California (Pasadena). Four examples pomonae Fall

I am at a loss to know which of our species could have been iden-
tified as the European rubens Fab., and am inclined to believe that
the latter is not established here, though possibly occurring occasion-
ally through fortuitous importation. The species above described
as puritanus answers best to rubens in its notably elongate elytra,
but it is black and has unusually long antennae; as brumalis and
rhodensis are allied black or blackish species, though distinctly dif-

POGONIISLE 411

ferent in elytral and antennal structure, it becomes highly probable
that no one of the three can be rubens. Micans of LeConte, from
Lake Superior, I have not seen; it probably belongs in the same sec-
tion as the three just mentioned, but the expressions in regard to
the prothorax "utrinque ante medium foveolatus" and to the ely-
,tra "maculis utrinque duabus magnis obscuris valde obsoletis"
are not applicable to any of them; the former of these expressions
is possibly either a mistake or refers to some abnormal condition
in the type specimen.

There can be no doubt that calif ornicus is distinct from chalybeus;
it is a smaller and narrower species, as shown by the ample series
at hand, besides differing in color as stated by Motschulsky. The
species described by LeConte under the preoccupied name fulvus
is also amply isolated. Carolina is the most remarkable of our
species in its extremely inflated and convex hind body, narrow head,
small eyes, very long filiform antennae and sharply prominent hind
thoracic angles, in which last character it is however approached
by arizoncz.

Anatrechus n. gen.

This remarkable genus is founded upon Trechus barbarce of Horn.
It differs from Trechus in the much larger head, stouter palpi, the
last joint being much longer than the third and conoidal, in the
obsolete frontal sulci, basally much narrowed prothorax, with the
sides of the base very oblique, recalling Platidius, and in the obso-
lete basal foveae, absence of elytral striation and of the subscutellar
puncture or tubercle; also in the lack of any trace of the peculiar
arcuate apical fossa in prolongation of the fifth stria distinguishing
Trechus; it further differs by the presence, along the median line
of each elytron, of several coarse setigerous -punctures, disposed
apparently in two approximate series. On the under surface it
differs greatly in the small and very short met-episterna and rela-
tively longer abdomen and the male, instead of having the first
two joints of the anterior tarsi strongly dilated, has these tarsi
thicker, the first two joints more transverse and less conspicuously
dilated when compared with the two following joints. The eyes
are well developed and rather prominent, the mentum tooth acutely
bidentate and the hind tarsi thick, the basal joint as long as the

412 MEMOIRS ON THE COLEOPTERA

next three combined, the latter subequal among themselves and
about as long as wide. Hind wings are almost certainly wanting.

The male example in my collection was received from Mrs.
Fuchs, and is in all probability the same as that described and fig-
ured by Mr. Schaeffer (Bull. Am. Mus,, N. Y., XIV, p. 210). Its
dimensions are 5.0 by 1.8 mm. It was labeled "Pasadena, Los
Angeles Co" as received, and has never, so far as known, been com-
pared directly with the original type of barbarce, taken at Sta. Bar-
bara, by Mr. Fuchs. It agrees very well with the original descrip-
tion of barbarce, however, except in one particular, for it is said in
the description that there are the usual dorsal punctures, which
would mean two discal and widely separated and one subapical ; in
the specimen here referred to this is not true, there being about six
punctures on each elytron, irregularly disposed in two close-set
series.

There are so many homologous characters pervading Pogonus,
Patrobtis, Platidius and Trechus, and some closely related genera,
that the course favored by LeConte and Horn, placing them all in
a single subfamily Pogoninae, would seem to me more appropriate
than the division into two subfamilies, Pogoninae and Trechinae,
now advocated in the European lists. In this subfamily Pogoninae
there are several tribal groups. Pogonus is very poorly represented
in North America by three genera and three species — Pogonus tex-
anus Chd., Pogomstes planatus Horn (depressus \\ Lee.) and Diplo-
chcetus parallelus Lee. (lecontei Horn). The last two are considered
subgenera of Pogonus by some systematists, but this is not neces-
sary or advisable, as the three groups differ among themselves very
much in habitus, as well as structural characters.

IV— MISCELLANEOUS NOTES AND CORRECTIONS

CARABID/E

The Selenophorus mustus, described by me as new, from Biscayne
Bay, Florida (Mem. Col. V, 1914, p. 152), is evidently the same as
excisus Lee., which is a valid species and not a synonym offatuus as
maintained by Leng (Bull. Am. Mus., XXXIV, p. 597). S. blan-
chardi Manee, is not closely allied to excisus, but differs in its still
shorter and relatively broader prothorax, smaller head and more
obscure bronzy lustre, that of excisus being rather brilliantly sub-
aeneous; as in excisus, the body is much less elongate than infatuus.

Celiamorphus opaculus Csy. (1. c., p. 143), has proved to be
abundant at Southern Pines, North Carolina — a region peculiarly
rich in the Selenophorids; it is the largest species of the genus,
notably elongate, with the head somewhat variable in relative
size but on the whole larger than in any other, and with the man-
dibles wholly black as a rule. In elliptic us the body is notably
smaller, and the mandibles are pale testaceous, black at tip and at
the outer edge basally. My series of opaculus consists of twenty
individuals, that of elUpticiis also of the same number, so that thoir
divergences can be easily compared. Cnrrens resembles ellipticus
somewhat but is narrower, the prothorax more narrowed and more
deeply sinuate at apex and the eyes notably larger. Of contractus
Csy., a small species with shorter prothorax, Mr. Manee has re-
cently sent me two additional examples; it is a rather isolated form
and is not closely allied to any other.

Mr. Loding has very kindly sent me three examples of Aniso-
dactylus lodingi Schf. It is very much larger than any other spe-
cies and differs conspicuously in habitus, because of its very large
head, notably larger in the female than in the male, with feebly
convex eyes and long and less constricted neck. The anterior tarsi
of the male are very broadly dilated, with extremely transverse
joints. The discal puncture of the elytra, at the outer side of the
second stria near four-sevenths, is as distinct as in any other species,
and I am therefore at a loss to undertand the apparent oversight

414 MEMOIRS ON THE COLEOPTERA

of Mr. Schaeffer in stating that this puncture is wanting. The
species must be regarded as the type of a separate genus near
Anisodactylus, for which I would propose ihe name Cephalogyna
(n. gen.).

The name "celax " (1. c., p. 107) will be recognized of course as
a misprint for celox; it is given correctly in the index.

EROTYLID^:

If Mr. Blatchley will again examine his type of Tritoma dissimilis
from Florida (Can. Ent., 1917, p. 140), he can better decide as to
its relationship with Pseudischyms acuminatus Csy. (Mem. Col.,
VII, 1916, p. 157), for it appears now, by an inspection ot his de-
scription, that the two are probably identical.

HISTERIM;

A few errors, which have become apparent since my last paper
(Mem. Col., VII), are corrected as follows:

Platysoma (Cylistosoma) quadrifera Csy. (1. c., p. 202), is a syno-
nym of parallela Say.

Saprinus discoidalis ssp. ampins Csy. (I.e., p. 258), is the true
discoidalis of LeConte. The former, as found at El Paso and in
New Mexico, resembles discoidalis in general form and size, but is
arways deep black, never having the metallic lustre of discoidalis—
described originally from southern California, has rather stronger
sculpture, which however is almost similar in nature and distri-
bution, and more strongly angulate mandibles externally. The
pygidium is also more or less carinulate toward base along the me-
dian line, a character which is not suggested even vestigially in
either of my two examples of discoidalis (ampins Csy). This New
Mexican form may take the name Saprinus discoidalis ssp. lati-
formis nov., having as a synonym S. discoidalis Csy. nee Lee.

The two species Saprinus repens and insolitus (1. c., pp. 262, 263)
belong to the genus Chelyoxenus of Hubbard, but differ from C.
xerobatis Hubb., in the form of the pygidium, among other features.
The peculiar and mutually very different pygidial modifications in
the two species first named above, have been made known in suf-
ficient detail under the original descriptions. In xerobatis, my two
specimens from Crescent City, differing considerably in size, have

NOTES AND CORRECTIONS 415

the pygidium mutually similar; beyond the middle it is centrally
flattened in a small area, the surface thence rather rapidly sloping
toward the apical parts, with a fine cariniform median line extend-
ing from the small flattened area to the apex. I do not know to
what extent these singular and sharply diversified pygidial charac-
ters may be due to sex.

CERAMBYCID^:

The genus Malthophia Csy. (Mem. Col., Ill, p. 308), is either
the same as Idcemea Horn or closely allied, but on comparing the
male type of M. oculata with Mr. Fall's description of Idcemea cali-
fornica .(Occ. Papers, Cal. Acad., VIII, p. 256), which seemed at
first might be identical, I find that in oculata the prothorax is tuber-
culate at the sides, well behind and not "at the middle" and the
elytra are only one-half wider than the prothorax, and not "three-
fourths wider." Otherwise there seems to be close agreement, ex-
cept that californica is materially larger — 13 to 16 mm. — and not
10 mm. as in oculata. Having become involved in a serious over-
sight in this matter, it is however somewhat compensating to find
that, under more modern conceptions as shown in the catalogue of
Aurivillius, Idcemea, Methia and other related genera should form
part of the series near Achryson. It did not occur to me to look for
Malthophia among the Lamiids. At all events, we have here an
absolutely independent estimate of its systematic position, confirm-
ing that of Aurivillius. It is furthermore highly probable that
Malthophia, as represented by californica and oculata, is not exactly
the same generically as Idcemea Horn — that is judging by the devel-
opment of the eyes and antennae.

Geropa cequicollis Csy. (1. c., p. 306), is evidently a synonym of
Achryson concolor Lee. The genus Geropa differs, however, from
Achryson, as represented by surinamum, in some important partic-
ulars besides the straight and elongate-oval and not arcuate basal
joint of the antennae, truncate and not bisinuate thoracic base,
and rounded and not spinose elytral apices; it differs very strongly
in general habitus and should be regarded as valid.

Of Pogonocherus salicicola Csy. (Mem. Col., IV, p. 347), I have
recently received a second specimen from Mr. Frost, agreeing per-
fectly with the type and confirming the species as amply valid and

4i 6 MEMOIRS ON THE COLEOPTERA

in no sense a variety of any other. The name was misprinted
" salicola," but, although noticing the error shortly after publi-
cation, I have neglected until the present opportunity, to change
it to the correct form — salicicola.

It is possible that Tetraopes vegasensis Csy. (1. c., p. 380), may
be the same as collaris Horn. Although an inspection .of the type
of the latter some time ago, at any rate shows a rather close gen-
eral agreement, I could form no absolutely determinative conclusion
except by having the two forms together; meanwhile it might be
considered as subspecifically related to collaris.

Anthophilax viridis Lee., from Eagle Harbor, Lake Superior, is
said to have the head and prothorax virescent, the antennae paler
toward tip and the tibiae rufescent toward base. The form from
the Adirondacks, which we have been calling viridis, has the head
and prothorax of a subcupreous chocolate-brown and the elytra
bright green as in viridis and similarly sculptured, but the antennae
are not paler apically in either sex, being entirely black (cf1), or
with the joints beyond the second entirely pale, with black tips
(9); the legs in the male are entirely black; in the female they
are colored as described of viridis. This Adirondack form seems to
be at least varietally distinct from viridis, and I would propose for
it the name Anthophilax viridis ssp. viridipennis nov. In the
Lake Superior cyanens Hald., the entire upper surface is green, the
antennal joints (9) particolored, and the legs in that sex are en-
tirely pale, with darker knees and tarsi, the elytral sculpture less
dense than in viridis or viridipennis; it is apparently a valid species,
differing from malachiticus in its larger size, stouter form and much
finer and sparser terminal sculpture of the elytra.

The Lake Superior form of Centrodera decolorata differs from the
eastern form in having more cuneiform and basally broader elytra
in both sexes, and a relatively smaller and more densely punctate
head. This may be seen very readily in series. The Lake Superior
form may be called Centrodera decolorata ssp. lacustris nov.

INDEX.

All generic and specific names without designation of authorship in the following
index, refer to new descriptions in the preceding pages of this work. Names merely
incidentally mentioned are frequently omitted.

PAGE

Abacidus Lee 323, 371

permundus Say 323, 371

Abax chalybeus Pallrd "". 320

coracinus Say 326

Achryson concolor Lee 415

Acrodon Zimm 226

brunneum Gyll 226

Amara Bon 226, 292

acuminata 297

a^neolucens 312, 313

ffineopolita 304

anthracina Hald 297

apachensis Csy 270

arcuata 296

aurata Dej 273

basillaris Say 292, 293

brunnea Gyll 226

cserulea Mots 294

californica Dej 246, 254

castalia 311

chalcea Dej 265

compacta Mots 294

confinis Dej 234

conflata Lee 305

confusa Lee 311

contempta Lee 288

convexa Lee 308, 312

cupreolata Putz 303

devincta 307

difficilis Lee 297, 312

diffidens 306

ebenina 310, 313

enervis 306

fallax Lee 298, 312

ferruginea Csy 290, 291

furtiva Say 236

gibba Lee 271

quadalupensis 295

harpalina Lee 285

hesperia 298, 312

humilis 302

impedita 310

impuncticollis Say 293, 297

inaqualis Kirby 248

indistincta Hald 315

insignis Dej 293, 294

insularis Horn 295

interstitialis Dej 254

keeni 299

PAGE

Amara lacustrina 299

laurana 300

leydeni 306

marquettensis 304

marylandica Csy 291, 293

mexicana Dej 255

musculus Say 288

mystica 298

nebraskana 304

obesa Say 245

oblongula 305

otiosa 300

oviformis 308

pallida Csy 284

patruelis Dej 248, 254

perspecta 294

piceola 309, 312

polita Lee 309, 312

pomona 301

protensa Putz 313

provoana 300

rustica 303

schwarzi Hayw 240

splendida Hald 248

subffinea Lee 278

subpunctata Lee 311, 313

tarsalis 295

tenax 302

terrestris Lee 260

turbata 307

vigilax 301

wingatei 308

AMARIN/E 224

Amerizus Chd 2, 164

crassicornis 165

keeni 166

longicornis 166

oblongulus Mann 166

spectabilis Mann 165

Anaferonia 321, 341, 362

abdominalis Lee 347

constricta Say 321, 345

distincta 342

evanescens 343

fausta 348

incisa Lee 348

iowana 347

latebrosa Lee 346

ovipennis Lee 343

417

4i8

INDEX

Anaferonia pantex 344

papago 346

pimalis 341, 345

pudica 346

substriata Lee 343

vernicata 344

Anatrechus 405, 41 1

barbarae Horn 411

Anillaspis 168

Anillinus 167

Anillus Duv 2, 167, 168

carolinae 167, 168

coecus Duv 168

explanatus Horn 168

fortis Horn 168

AnisodactyTus lodingi Schf 413

Anophthalmus Stm 394, 404, 405

Anthophilax viridipennis 416

Asaphidion Gozis 4

Barytachys Chd 175

gemellus Csy 181

glossema Csy 182

Bembidion Latr 2, 4

acomanum 59

acticola Csy 125, 141

actuosum 65

acutifrons Lee 163

adductum 149

adjutor 39

adolescens 158

adultum 33

adumbratum 26

aegrotum 51

aeneorubrum 1 1

aestivum 129

affine Say 89, 128, 142

agitabile 115, 140

albidipenne 80

aleneanum 114

americanum Dej 15

amicum 29

amnicum 121

ampliatum 24

ampliceps 161

angulifrons Lee 163

animatum 62

antiquum Dej 78

approximatum Lee 97, 139

aptum Lee 17

arcuatum Lee 117

argutum 123

assimile Gyll 7, 155, 163

atrolucens 115, 140

augurale 92

avidum 53

axillaris Lee 151

aztecanum 145

badiipenne 60

barbarae 99

bellulum 71

bifasciatum Mots 6, 43, 45

bifossulatum Lee 5, 13, 14

bimaculatum Kirby 72

Bembidion binarium 9

blaisdelli 222

blanchardi Hayw 77

blanditum 23

brevistriatum Hayw 47, 62, 82

brumale 22

bucolicum : 34

caducum 80

californicum Hayw 47, 63

caliginosum 119

callens 112

callidu'm 50, 8 1

canonicum 61

castalium 75

castum 20

caudex? 98

cautum Lee 164

cernens 100

chalceum Dej 79

champlaini 56, 82

cheyennense 15

citulum 66

civile 124

clemens 159

cogitans 69

cognatum Dej 142

coloradense Hayw 138

commotum 23

compar Lee 82

complanatum Mann 37

concinnum Blaisd 153

concolor Kirby 47, 51

concretum 156

conflictum 32

confusum Hayw 10

congruens 156

connivens Lee 160

consanguineum Hayw .74, 84

consentaneum Lee 99, 139

consessor 52

consimile Hayw 81, 137

conspersum Chd 104

consuetum 93

constricticolle Hayw 89

constrictum Lee 124, 141, 142

continens 91

contractual Say 113, 141

cordatum Lee 88, 89, 119, 141

cornix in

coxendix Say 1 1

crurale Lee 148, 153

curiosum 95

curtulatum 39

daphnis 120

debiliceps 104

deceptor 29

decipiens Dej 131

decrepitum 41

definitum 116

dejectum Csy 126

delectum 44

demissum 133

dentellum Thun 138, 141

INDEX

419

Bembidion denveranum 64

derisor 99

devinctum 97

digressum 155

dilatatum Lee 78, 81

diligens 114. 140

dilutum 33

disparile 161

docile 126

dorsale Say no

dubitans Lee 149, 153

dyschirinurn Lee 140

editum 125

effetum 40, 43, 154

efficiens 90

egens 132

electum 42, 43

ephippigerum Lee 6, 85, 86, 89

erasum Lee 4, 5, 18, 20, 35

erosum Mots 59

evidens 93

exclusum 109

excursum 59

expositum 101

extensum 42, 43

extricatum 98

fabrum 27

facile 48

fallax Dej 128, 143

falsum Blaisd 43

fastidiosum 150

fenisex 106

festinans 121

festivum 5, 45, 46, 48

fidele 113

filicorne 56

flammulipenne Mots 104

flavopictum Mots 135, 143

flebile 41

formale 101

franciscanum 102

fraternum Lee 4

frontale Lee 157, 163

frugale 130

fugax Lee 82

fugitans 127, 142

funereum Lee 26, 35

furtivum 145

fuscicrus Mots 85

graciliforme Hayw 117, 138

grandiceps Hayw 48, 81

grapei Gyll 83

graphicum 108

gratiosum 34

gratuitum 130

gregale 148, 153

guexi Chd 82

gulosum 96

habile 162

hageni Hayw 143

haplogonum Chd 47, 57

haruspex 31, 35

Bembidion henshawi Hayw 138

hesperium Fall 9

hilare 44

histricum 68, 83

honestum Say 4, 47, 48

horni Hayw 45

humboldtense Blaisd 55

idoneum 90

illex 31

illini 15

imbelle 130, 142

imitator 105

imperitum 91

impium 28

impotens 129

improvisum 25

incertum Mots 35

incrematum Lee 141

indigens 133

indistinctum Dej 104

innocuum 63

inopinum 51

inquietum 67

insopitans 68

insulatum Lee 118, 141

integrum 79

intermedium Kirby 109

invidiosum 162

iridescens Lee 29, 35, 36

jacobianum 101

jucundum Horn 153

laevigatum Say 5« J8

lampros Hbst 143

lascivum 21

lassulum 118

latebricola 100

laticolle Duft 17

laticolle Lee 120

laxatum 24

lepusculus 75

levettei 9

litorale Oliv 5. 7

lividulum 25

longulum Lee 54

lubricum 21

lucidum Lee 75- 84

luculentum 122, 141

lugubre Lee 60, 82

marquettense n

mannerheimi Lee 47

marcidum no

marinicum 57

mediocre 107

merens 7o

mexicanum Dej 82

militare Csy 69, 83

minax 146

mobile 95

monstratum 106

mormon Hayw 112

morosum 49

morulum Lee 140

42O

INDEX

Bembidion mundum Lee 45

mutatum G. Si H 151

muscicola Hayw 89, 136, 143

nactum 77

nebraskense Lee 5

negligens 127, 142

nescium 30

nevadense Ulke 76

nigripes Kirby 92, 139

nigripes Mann 141

nigrocoeruleum Hayw 36

nigrum Say 47. 48, 83

nitens Lee 66, 83

nitidum Kirby 5, 17

novellum 88, 113, 140

nubiculosum Chd 120

nubiferum • 96

nuperum 16

oblatum 52

obliqulum Lee 17

obliviosum 27

obsequens 90. 139

obtusangulum Lee 88, in

occultum 144

opaciceps 8

operosum 103

oppositum Say 147

oppressum 40

optatum 69

ornatellum 102

osculans 20

parabile 114, 140

parallelocolle Mots 28

parowanum 80

particeps 124

patruele Dej 108, 139

pedicellatum Lee 150

pellax 136

peregrinum 159

pernotum 62, 82

perspicuum Lee 58

pertinax 53

perturbatum 115

petulans .81, 85

picipes Kirby 83, 84

pictus Lee 129

pimanum 98

placabile 119, 141

planatum Lee 6, 37, 38, 42

planipenne Lee 82

planiusculum Mann 37, 39, 43

planum Hald 82

platyderum G. & H 120

platynoides Hayw 84

plectile 107

porrectum 55

postfasciatum Ham in, 139

posticum Hald ... 107

postremum Say 73

praecinctum Lee 152, 153

probatum 22

procax 103

Bembidion prociduum 91

prosperum 122, 141

provoanum 105

pugetanum 148, 153

pullulum 133, 142

punctatostriatum Say 10

quadrifoveolatum Mann 36

quadrimaculatum Linn. . 7, 146, 147

quadrulum Lee 47, 49, 81

reconditum 102

recticolle Lee 52, 81

regestum 16

relictum 153

remotum 163

renoanum 72, 84

repens 35. 36

retectum 61

retractum 109

rickseckeri Hayw 5, 48

robusticolle Hayw n

rotundiceps 132

rubiginosum Lee 140

rufotinctum Chd 77

rupicola Kirby 77

rusticum 33, 35

salinarium 86

sallei Bates- 82

sapphicum 149

sarpedon 58

satelles 71

saturatum 24

scenicum 159, 163

scintillans Bates 140

scopulinum Kirby 47, 71, 84

scrutatum 64

scudderi Lee 5, 88, 89, 137

sculpturatum Mots n

seclusum 23

seductum 66

sedulum 70

sejunctum 48, 79, 85

semifasciatum Say 139

semistriatum Hald 6, 87

semotum 96

serenum 21

sexpunctatum Lee 143

shastanicum 74

simplex Hayw 35

simulator 93

siticum 157

snowi ii, 12

sociale 127, 142

solutum 38

sordidulum Chd 134

sordidum Kirby 84

speculum . . 20

sphseroderum Bates 6, 7, 144

stabile Lee 60

strigulosum 150

striola Lee 74

subangustatum Hayw 67

subinflatum Mots 76

INDEX

421

Bembidion submaculatum Bates. ... 84

sufflatum 15

sulcatum Lee 7, 153, 154

suspectum Blaisd 139

tartareum 49

temperans 135

tenax 152

tersum 162

tessellatum Lee 104

testatum 30

tetracolum Say 76, 84

tetragonoderum Chd 53

texanum Chd 69

thespis 128

tigrinum Lee 5, 6, 46, 89

timefactum 41

timidum Lee 135, 143

tolerans 132

tractabile 64

transversale Dej 47, 57

trechiforme Lee 27, 35

trepidum Lee 154

tritum 50

triviale 134

turbatum 32

umbraticola 54, 81

umbraticum 158, 164

umbratum Lee 94

unicum 10, 12

ustulatum Linn 6, 46, 47

vacivum 22

vafrum 60

vancouveri 73

vandykei Blaisd 36

vapidum 160

variegatum Say. .6, 88, 108, in, 139

variolosum Mots 94

vegetum 151, 153

venator « n, 12

veridicum 152, 153

vernula Csy 124

versicolor Lee 136, 142

vespertinum 40

viaticum 65

viator 31

vigilans II, 13

vile Lee 89, 140

vinnulum Csy 89, 116, 140

virgatulum 131

vividum Csy 122, 141

volatile 28

vulpecula 126

vulsum 55, 82

wingatei Bland 166

xanthostictum G. & H 104

Blemus a^nescens Lee 3, 313

Bothriopterus Chd 319, 324

adstrictus Esch 324

Bracteon Bedel 7

Bradytus Zimm 226, 234

aequalis 242, 243

apricarius Payk 226, 235, 238

Bradytus curtus 236

deceptus 241

exaratus Dej 227, 235, 236

glacialis Mann 239

gravidus 236

humphreysi 240

immundus . 243

laevistriatus Putz 240

latior Kirby 235, 240, 243

liber Lee 240

nainensis 235, 238

obsolescens 242

oregonus Lee 240

relictus 242

septentrionalis Lee. . 227, 240, 243

specularis 241

stygialis 237

CARABID.E 413

Celia Zimm 224, 226

acutangula Putz 285, 291

amplipennis 266, 271

angustior 275

apachensis Csy 270, 271

aurata Dej 246, 271, 273

brevitarsis 290

brumalis 259

brunnescens 262, 270

calif ornica Dej 246, 254

chalcea Dej 265, 270

chihuahuae 282

Clementina 274

consors 250

corvina 266, 270

crenulata 288

curticeps - 281

defecta 260

definita 263

docilis 262

eldorensis 261

ellipsis 252

elusa '. 277

erratica Stm 246, 253

evanida 275

exposita 260

farallonica • 273

farcta Lee 249

ferruginea Csy 290, 291

finitima 249

fluminea. . . 287, 291

fontinalis 261

formalis • 248

gibba Lee . 271

gnara • 255.

greenei • 269.

habilis . 255.

haldemani 281

harpalina Lee 276, 285;

hilaris 275

hospes -279

imitatrix Horn 271, 272, 276

jacinto 272

lauta 248

422

INDEX

Celia laxicollis 258

limbalis 289, 291

liquida 282

lubrica 286

lucina 279

lugubris 268

lyncea 280

merula 267

mexicana Dej 255

mimica 260

modulata 250

mora 253

musculus Say 288, 291

nevadica 264

nexa 253

nigripennis 286

nugator 281

nupera Horn 268

nupta 278

obligata 263

paganica 259

pallida Csy 284, 291

parata 256

patruelis Dej 248

patula 270

paulula 289

pimalis 283

pinorum 264

politissima 284

proba 274

proditor 280

rectangula Lee 246, 256, 257

reducta 252

remotestriata Dej 246, 271

robustula Horn 270

rotundiceps 272

rubrica Hald 246, 290

schotti 266

scintilla 290

scolopax 269

semota 251

shantzi 285

shastanica 251

shoemakeri 283

sinuosa 277

sodalis 265

solita 252

sphserops 267

subsenea Lee 276, 278

subdepressa 249

terrestris Lee 260

texana Putz 284, 291

thoracica 278

vegrandis 287, 291

virginica 289, 291

volatilis 287, 291

Celiamorphus Csy 413

Centrodera lacustris 416

Cephalogyna 414

CERAMBYCID^E 415

Chelyoxenus xerobatis Hubb 414

Cryobius Chd 320, 323. 373

Cryobius beringi 374

breviusculus 375

delicatus 375

hudsonica Lee 323

otariidinus 374

vindicatus Mann 374, 376

Curtonotus Steph 225, 226, 227

adstrictus Putz 227, 228

argutus 233

brunnipennis Dej 231, 232

carinatus Lee 226

catenulatus 230

concretus 228

deficiens 232

fulvipes Putz 226

haematopus Dej 226, 233

hudsonicus Hayw 231

hyperborea Dej 233

inanis 233

infaustus Lee 230

jacobinus Lee 228, 229

labradorensis 231

laticollis Lee 227, 229

pennsylvanicus Hayw 227

pterostichinus Hayw 226

putzeysi Bates 226

rubripennis 232

scrutatus 231

spadiceus 227, 228, 229

sponsor 228

stupidus Lee 228

tartareus 229

Cyclolopha 144

Cyclotrachelus Chd 322, 348

faber Germ 349

roticollis 322, 349

vinctus Lee 350

Cylindrocharis 321, 326

piceata 327

rostrata Newm 321, 327

sulcatula 327

Cyrtonotus G. &. H 227

Diplocampa Bedel 155

Diplochaetus parallelus Lee 412

Dysidius Chd 324, 377

mutus Say 324

purpuratus Lee 377

trinarius 377

Epaphius fulvus Lee 407

EROTYLID.'E 414

Eudromus Kirby 17

Euferonia 320, 322, 323, 365, 370

adjuncta Lee 369

coracina Newm 369, 370

erebea Csy 369

flebilis Lee 369

ingens 367

lachrymosa Newm 370

proba Csy 366

quadrifera 366

relicta Newm 366

stygica Say 322, 367

INDEX

423

Euferonia subaequalis 368

umbonata 368

vapida Csy 367

Eumolops 322, 351

ampla . .3SL 353

decepta.. . 357

fatua Lee 356

furtiva Lee 355

gravida Hald . .354, 356

heros Say 352

impolita 358

inflatula 354

prominens 353

sexualis 322, 354

sodalis Lee 356

sulcata , 355

Evarthrinus 357

Evarthrus Lee 319, 322, 358

abdominalis Lee 347

acuminatus Chd 362

acutus Lee 373

americanus Dej 361

blatchleyi 360

breviformis 360

colossus Lee 356

corax Lee 357

diligendus Chd 363

enormis 358, 361, 362

fatuus Lee 356

furtivus Lee 355

gravidus Hald 354

heros Say 351

incisus Lee 348

latebrosus Lee 346

lixus Lee 345

mancus Lee 363

nonnitens Lee 362

ovipennis Lee 343

parallelus 359, 362

rubripes 359

seximpressus Lee 361, 362

sigillatus Say 322, 359

sodalis Lee 356

substriatus Lee 343

Ferestria Leng 322, 364, 373

larvipennis Lee 322

morio Dej 364

nanula 364

obsoleta Say 338, 364

Feronalius 225, 226

pterostichinus Hayw 226

putzeysi Bates 227

Feronia americana Dej 361

angusta Dej 321

atra Dej 320

castanea Dej 325, 328

chalcites Say 324

constricta Say 321

ebenina Dej 324

erythropus Dej 324

fastidita Dej 340

heros Say 352

Feronia honesta Say 321

longicornis Say 395

moesta Say 323

muta Say 324

obscura Say 372

patruelis Dej 324

permunda Say 323

recta Say 325

sigillata Say 322

stygica Say 322, 367

submarginata Say 323

tartarica Say • 324

valida Dej 321

ventralis Say 323, 371

Feronina 322, 365

palmi Schf 322, 365

Gastrellarius 321, 338

atronitens 339

blanchardi Horn '. 341

deficiens 340

honestus Say 321, 340

scolopaceus 340

Gastrosticta 323, 371

amnicola 372

obscura Say 372

puta Csy 372

subacuta 373

tumescens Lee 373

ventralis Say 323, 371

Geropa Csy 415

Hammatomerus Chd 319, 320, 325

morionides Chd 320

HISTERID.« 414

Holciophorus Lee 319, 320

ater Dej 320

Hydriomicrus 87

Hydrium Lee 18

Hypherpes Chd 319, 321, 325, 328

alamedae 334

anthrax 331

elumbis 332

innatus . 328

intectus 333

kansanus 33°

luscus 332

mercedianus 335

placerensis 334

protensipennis . 336

responsor . 33°

restrictus • 331

spissitarsis . 329

vivax • 333

Idcemea Horn 4J5

Isotachys 204, 211

Leiocnemis Zimm • 226

avida Say • 234

Leironotus Gangl 226

arenaria Lee 226

Leptoferonia . .321, 33°

angustus Dej 321

fuchsi Schf 337. 338

fugax 337

424

INDEX

Leptoferonia humilis Csy 337

inopina 338

larvalis 337

Leuchydrium 46

Liocosmius 43

Lionepha 18, 19, 35

Lopha Steph 146, 155

Lophoglossus Lee 324

tartaricus Say 324

Loxandrus Lee 325, 379, 392

accelerans 386

agilis Dej 383

calathinus Lee 386

celer Dej 391, 293

cervicalis 385, 391

collucens 382

comptus 387

concinnus 391

contumax 388

crenatus Lee 391

cursitans 387, 392

erraticus Dej 392

floridanus Lee 392

fulgens 388

inquietus 389, 392

laticollis Chd 382

lateralis 381, 391

limatus 382

lucens Chd 383

ludovicianus 383, 392

mandibularis 382

micans Chd 392

mundus 385

opaculus Bates 380

parallelus ' 386, 392

parvicollis 389

rectus Say 325, 381

reflexus Lee 391

saphyrinus Chd 380, 391

scitus 388

sculptilis Bates 380

suturalis 384, 391

taeniatus Lee 384, 391

tetrastigma Bates 380

velocipes 390

velox Dej 391

vulneratus 390

Lymnaeum laticeps Lee 169

Lymnastis indica Mots 3

Lymneops 2, 168

angusticeps 169

laticeps Lee 169

Lyperopherus Mots 323, 325

punctatissimus Rand 323, 325

Malthophia Csy 415

Megalostylus Chd 379

Megasteropus 322, 350

gigas 322, 350

Melomalus 37

Micratopus fusciceps Csy 3, 4, 313

Micromaseus 324, 378

sequicollis 379

Micromaseus desidiosus Lee 379

patruelis Dej 324

Micromelomalus 37

Microtachys 210

Mioptachys Bates 221

Molops lixa Lee 345

Monoferonia 322, 363

appalachius Horn 363

diligenda Chd 363

manca Lee 322, 363

osculans Csy 363

Myas Dej 320, 325, 326

chalybeus Palli. . 320

coracinus Say 326

cyanescens Dej 326

foveatus Lee..- 326

Notaphus Steph 88

Ochthedromus Lee 13

Odontium Lee 7

Omaseus Dej 324

ebeninus Dej 324

Paraferonia 323, 376

lubrica Lee 323, 376

Paralopha 153

Parargutor 324, 377

atrolucens 378

lustrans Lee 324, 378

Paratachys 3, 174, 191

austinicus 174

colonicus 175

Patrobus Steph 394, 398, 405

americanus Dej 395

excavatus Payk 397

fulvus Mann 397

insularis 394. 397

labradorinus 395

laeviceps 394- 397

longicornis Say 395

minuens 396

rufipes Lee 394, 397

septentrionis Dej 397

tenuis Lee 396

trochantericus Lee 399

Pelor Bon 234

Percosia Zimm 226, 243

diffinis Lee 244

extensa 244

latissima. 245

obesa Say 245

ventricosa 245

Pericompsus Lee 2, 170

ephippiatus Say 170, 171, 172

histrionellus Bates 172

laetulus Lee 170, 173

longulus Bates 173

oculaticauda 172

sellatus Lee 170, 171

Peryphodes 85, 89

Peryphus Steph 46

Piesmus Lee 319, 323, 393

submarginatus Say • 323

Plataphus Mots 19. 35

INDEX

425

Platidius Chd ..398,411

aterrimus Dej 404

breviceps . 4°2

breviusculus 401

californicus Mots 399

coloradensis 403

filicornis ... 404

incisus 399

latipennis 399

rectus 400

reflexus 403

sierranus 401

strenuus 400

tenuitarsis 403

Platyderus Steph 378

Platysoma quadrifera Csy 414

parallela Say 414

Pcecilus Bon 324, 376

chalcites Say 324

cyaneus Lee 377

cyanicolor Chd 377

mexicanus Chd 377

sayi Brul 324

snowi Csy 376

Pogonidium Gangl 17

POGONIN^: 394

Pogonistes planatus Horn 412

Pogonocherus salicicola Csy 415

Pogonus Dej 394. 404. 412

depressus Lee 412

lecontei Horn 412

texanus Chd 412

Polyderis Mots 191, 211

minuscula Mots 211

Pseudargutor 324, 378

erythropus Dej 324, 378

Pseudischyrus acuminatus Csy 414

PTEROSTICHIN^ 224, 319

Pterostichus adjunctus Lee 369

adstrictus Esch 324

agonus Horn 370

bisigillatus Harr 367

castaneus Dej 325

erebeus Csy 369

fallax Dej 371

flebilis Lee 369

herculaneus Mann 328

hudsonicus Lee 323

lachrymosus Newm 370

Iffivipennis Lee 322

longulus Lee 332

lubricus Lee 323, 365

mcerens Newm 369

obesulus Lee 379

osculans Csy 363

palmi Schf 322

probus Csy * 366

protensus Lee 366

pugetanus Csy 328

punctatissimus Rand 323

putus Csy 372

rostratus Newm 321

Pterostichus rugicollis Hald 367

sayi Brul 324

splendidulus Lee 379

superciliosus Say 371

tarsalis Lee 325, 329

tenuis Lee 396

tumescens Lee 373

wrangelli Csy 325, 328

Refonia 323. 3?o

moesta Say . .323. 371

Saprinus amplus Csy 414

discoidalis Lee . 414

insolitus Csy 414

latiformis • 414

repens Csy • 414

Selenophorus blanchardi Manee . . . . 413

excisus Lee 413

mustus Csy 413

Stereocerus Kirby 225, 233

grandiceps Lee 328

haematopus Dej 233

Stomis americana Laf 34°

Tachymenis Mots 3. 215, 220

flavicauda Say 220, 221

marginicollis Mots 220, 221

ocularis • 222

reflexicollis Mots . 221

Tachypus Dej 2, 4

Tachys Steph i, 3, 191. 192, 211

a^neipennis Mots 201

anceps Lee 180

anthrax Lee 178

appalachius 195. 203

audax Lee 177

beaumonti 196, 203

bradycellinus Hayw 208, 210

capax Lee 187

columbiensis Hayw 196

congestus 212

corax Lee 209, 210

coruscus Lee . . 201

cuneatus 195

diaphanus • 214

dolosus Lee 177

edax Lee 193

elegantulus Laf 172

esurialis 209, 210

flavicauda Say .221

flavicollis Mots 203

flumenalis • 213

frontalis Hayw 175

funebris 205

fuscicornis Chd 190

gentilis 197

granarius Dej ,182

hyalinus 200, 203

incurvus Say 180

iowensis !95

laevus Say .192, 210, 213

laxicollis . 202

liebecki Hayw I91

litoralis Csy 206, 209

426

INDEX

Tachys luridicollis 207

mendax Lee 185

multistriatus Mots 175

nebulosus Chd 179

nubifer 200, 203

obliquus 201

oblitus 195

occultator Csy 175, 208, 210

omissus 81, 206

pallescens 199, 203

pallidus Chd 209

panamensis 194

proximus Say 192, 198, 203

pugnax 207, 210

pulchellus Lee 180

pumilus Dej 194, 203

rapax Lee 177

rectus 213

rhodeanus 198, 203

rufotestaceus Hayw 211, 214

sagax 197

scitulus Lee 199, 203

spadix 202

subtropicus 208, 210

temporalis 200, 203

torrescans 207

trechiformis Hayw 211, 214

tripunctatus Say 188

umbripennis Chd 193

unistriatus 212

ventricosus Lee 197

vernilis 202

vittiger Lee 192, 204, 205, 210

vivax Lee 189

vorax Lee 194

xanthopus Dej 185

Tachysalia 173

Tachysops 171

Tachyta Kirby 3, 215

angulata 216

arizonica 219, 220

autumnalis Bates 220

californica 219, 220

collaris 218, 220

cucujoides Bates 220

debilicollis 219

falli Hayw 217

inornata Say 218, 219

kirbyi 216

nana Gyll 215, 217, 219

picipes Kirby 218

rivularis Mots 220

Tachyura Mots 3, 175, 191, 214

ancilla 186

anthrax Lee 178

apacheana 184

audax Lee 177

brevis 182

capax Lee 187

congener 181

dolosa Lee 177

famelica 185, 190

Tachyura fatua 187

fracta 188, 190

gaudens 188, 190

gemella Csy 181

granaria Dej 182

incurva Say 180

laetifica 183

laredoana 189

laxipennis 185, 190

levipes 186, 190

mellita 176

monticola 179

nebulosa Chd 179

parallela 182

profuga 185

rapax Lee 177

renoica 183

rubricauda 186, 190

saturata 187

sectator 180

sedula 184

serva 189

solita 178

soror 179

sospes 180

tahoensis 183

tripunctata Say 188

vernicata 181

vivax Lee 189

xanthopus Dej 185, 190

Testedium Mots 13

Tetraopes collaris Horn 416

vegasensis Csy 416

Trachelonepha 37

Trechonepha 19, 35

Trechus Clairv 164, 394, 404, 405

arizonae 409

barbarae Horn 411

brumalis 408, 410

californicus Mots 406, 411

Carolina Schf 409, 411

chalybeus Dej 406

fulvus Lee 407

hydropicus Horn 410

laevigatus Lee 410

micans Lee 411

oblongulus Mann 166

ovipennis Mots 410

pallescens 407

pomonae Fall 410

puritanus 407, 410

rhodensis 408, 410

rubens Fab 410

saxatilis 408

spectabilis Mann 165

tahoensis f. 407

Triaena Lee 224, 226, 313

afoveolata Hayw 317, 318

angustata Say 315

belfragei Horn 318

depressa Lee 318

flebilis 316

INDEX 427

Triaena longula Lee 315 Triaena uinta 317

pallipes Kirby 314 vapida 317

profuga 318 Triplectrus Lee 314, 318

scitula Zimm 316 Tritoma dissimilis Blatch 414

shermani 315, 318 Zabrus avidus Say 234

Issued November 12, igi8