bpe xo vita ie 0 0 amputatus n. sp.
Body a little larger and stouter, oblong-suboval, somewhat shining,
piceous-black; beak in the female almost as in the preceding but
somewhat thicker and less constricted near basal third, the antennz
almost similar; prothorax of different outline, trapezoidal, one-
half wider than long, the converging sides very evenly and but
slightly arcuate from base to apex; basal lobe larger and more
prominent; punctures coarser, distinctly separated, dense laterally,
the smooth median line barely traceable and only centrally; elytra
similar but more broadly parabolic, only three-fourths longer than
the prothorax, almost similarly grooved and punctate and with
similar conspicuous squamules. Length (2) 3.2 mm.; width 1.4
minis (New Perey. babes ford. Leos. cae. vl unilineatus n. sp.
T. L. Casey, Mem. Col. IX, Feb. 1920.
418 MEMOIRS ON THE COLEOPTERA
There may be some doubt if all representatives of semiruber are
as pale rufous in color as the type, but I have noted that throughout
Odontocorynus, wherever species are represented by good series,
there is no decided variation in color to be observed.
The following table embraces all the species of the salebrosus
type that have come to me so far:
Elytra with more or less dense, pale and very conspicuous parallel-sided
scales. Rocky Mountain regions, excepting inspectus and boone,
having nude strial punctures and which occur east of the Mississippi
Elytra and pronotum with separated linear scales, which are so numerous
however as to render the vestiture conspicuous; strial punctures
each with a distinct slender white squamule..... EE A a 8
Elytra and pronotum more remotely clothed with small, sparse, slender
and inconspicuous squamules; strial punctures never squami-
FETOUG i Oa ee 2 Gere Ue ate oars Cob a Rene ORS CERT ce 9
2—Strial punctures each with a conspicuous squamule; body very
stout: “tirst funicular jot notably elomsate:. «214+ 3
Strial punctures each with a very minute, slender and barely discoverable
squamule; body less stout; first funicular joint evidently shorter. .4
Strial punctures without apparent squamules; first funicular joint some-
what diversified in length according to the species..............-. 7
3—Body stout, oblong-suboval, not shining, black, the legs and antenne
black throughout; upper surface clothed densely with rather large
white scales, intermingled with some that are darker on the elytra,
the under surface, as usual, with dense oval white scales; beak in
the female smooth, cylindric, only feebly tapering, nearly straight,
bent at base, about half as long as the body, the antennz inserted
barely visibly beyond the middle, the funicular joints with coronzs
of white squamules; prothorax four-sevenths wider than long, the
sides subevenly and strongly arcuate, becoming parallel basally,
the apex faintly constricted; basal lobe a fourth the total width;
punctures moderately coarse and very dense, with a smooth median
line centrally; elytra broadly, obtusely parabolic, a fourth longer
than wide, at the moderately prominent humeri but very slightly
wider than the prothorax, four-fifths longer; strie not very coarse,
the intervals broad, subequal, not very coarsely, confusedly punc-
tate. Length (2) 5.0 mm.; width 2.35 mm. Eastern Colorado.
coloradensis n. sp.
Body less stout, black, less obtuse behind, clothed very densely through-
out above with large yellowish-white scales, still larger, denser and
whiter beneath, the squamules of the strial punctures very distinct,
the interstitial scales of perfectly uniform tint; beak in the female
smooth, feebly arcuate, slightly tapering, bent at base and not quite
half as long as the body, the antenne nearly similar, the funicle
slightly longer; prothorax of nearly similar outline, except that the
arcuate sides become parallel only much nearer the base, the basal
BARINA 419
lobe larger, almost a third the total width; punctures moderate,
very dense, the smooth median line not evident; elytra with more
converging arcuate sides and less obtuse rounded apex, at the rather
more prominent humeri much wider than the prothorax, three-
fourths longer; strie decidedly coarser, the closely and confusedly
punctate intervals slightly more than twice as wide as the strize and
subequal in width among themselves. Length (2) 4.7 mm.; width
2.2mm. Colorado (locality unrecorded)....... densissimus n. sp.
4—Sides of the prothorax regularly arcuate, gradually less so and sub-
parallel\imaboatbadal dials oeab yes er AA 5
Sides subparallel and very feebly arcuate, rounding only in about apical
Gi ele sate hed bn Pe Raee SOLED. Std Oe SOLE ches | PROG ROS 6
5—Form oblong-suboval, stout, closely clothed above with white scales,
smaller and more slender and less dense on the pronotum, except at
apex and as usual on the basal lobe, larger, broad and dense on the
strial intervals, dense and white on the under surface; beak in the
female smooth, feebly tapering, slightly arcuate, subevenly more
arcuate in about basal half, a little less than half as long as the
body, the antenne inserted submedially, the first two funicular
joints elongate, the first less so than in the two preceding but as
long as the next two together; prothorax one-half wider than long;
apex barely at all constricted, not quite half as wide as the base,
the basal lobe a fourth the total width; punctures moderate, dense,
though slightly separated medially, without smooth line; elytra
very obtusely parabolic, at the moderate humeral prominences only
just visibly wider than the prothorax, three-fourths longer; striz
deep, the squamules inconspicuous; intervals confusedly punctate,
three or four times as wide as the strie. Length (2) 4.5 mm.;
width 2.1 mm. Dakota (locality unrecorded).....dakotanus n. sp.
Form narrower, relatively somewhat more elongate, black, the tibize
rufescent; upper surface clothed densely with uniform ochreous
scales, which are nearly as wide on the pronotum as on the strial
intervals, but not quite so dense; beak in the female arcuate, smooth,
feebly tapering, nearly as in the preceding but more abruptly bent
at the immediate base, the antennz nearly similar and inserted just
visibly beyond the middle; prothorax somewhat less than one-half
wider than long, deeply, moderately and very closely punctate,
sometimes with a median smooth line centrally; apex half as wide
as the base, the basal lobe rather more than a fourth the total width;
elytra obtusely parabolic, at the feebly prominent humeri barely
visibly wider than the prothorax, three-fourths to four-fifths longer;
strie deep and abrupt, with minute and remote squamules, the
intervals densely punctured and squamose, three or four times as
wide as the striz, the scales uniform. Length (9) 4.3-4.6 mm.;
width 1.8-2.0 mm. Colorado (locality unrecorded). Three ex-
ampléstiy deioneen Me niki CI IC Ie. ochreosus n. sp.
Form still narrower and even more cuneiform posteriorly, the upper
surface clothed with white scales, more slender and less dense than
in ochreosus and not broadly dense and confused on the strial
intervals as in the preceding, but evidently separated, although very
420
MEMOIRS ON THE COLEOPTERA
conspicuous, forming about two irregular lines on each; beak (9)
nearly as in the preceding, except that the antenne are inserted
more evidently beyond the middle though similar otherwise, or (0)
more quadrate in section, sculptured, squamulose and subopaque,
rather more tapering, more abruptly bent at base but not differing
much in length, the antenne inserted only a little further forward
and not so apical as in scutellum-album and allied species; outer
funicular joints not evidently wider or transverse, the basal tooth of
the club small and feeble; prothorax two-fifths wider than long,
rather coarsely, very densely punctate, sometimes with traces of a
narrow impunctate line centrally; elytra more elongate, fully two-
fifths longer than wide, at the obtuse humeral prominences only very
slightly wider than the prothorax, four-fifths longer, the strie rather
coarse, with scarcely discoverable squamules, the intervals coarsely,
closely punctate and two to three times as wide as the striz. Length
(7 2) 3.65-4.5 mm.; width 1.5-1.9 mm. Colorado (Greeley),—
Wickham.) * Threevexamplesi:.... 0)... os ee ee greeleyi n. sp.
6—Oblong, black, with more or less rufescent legs, dull, clothed with
numerous whitish scales above, slender and well separated on the
pronotum, linear but broader on the strial intervals, where they
are loosely arranged in about two lines on each; scales beneath large,
white and dense; beak in the female nearly straight and feebly
tapering, broadly arcuate in about basal half, smooth, but little
longer than the head and prothorax; antenne inserted slightly
beyond the middle, rufous, with piceous club; prothorax not quite
one-half wider than long, the apex feebly constricted, fully half as
wide as the base, the basal lobe a fourth the total width; punctures
rather coarse, very dense, the smooth median line narrow and much
abbreviated; elytra with broadly arcuate oblique sides and not very
obtuse apex, nearly a third longer than wide, at the rather prominent
humeri only slightly wider than the prothorax, three-fourths longer,
the striz moderate; intervals from two to three timesas wide as the
strie, rather coarsely punctato-rugose. Length (Q) 3.7-4.4 mm.;
width 1.5-2.0 mm. Dakota. Four examples... .quadricollis n. sp.
7—Form rather narrowly rhomboid-oval (o’) or stouter (9), black
throughout, clothed above with conspicuous though not compactly
dense white scales, slender and well separated on the pronotum,
linear but thick, very white and arranged in two loose uneven rows
on each strial interval, large, oval, dense and white beneath; beak
(o") stout, dull, squamulose, evenly arcuate, longer than the head
and prothorax, with the antenne inserted well beyond the middle
and the tooth of the club small and inconspicuous, or (@ ) a little
more slender but not longer, smooth, arcuate, somewhat more so
at base, with the antenne similarly inserted; prothorax a third to
one-half wider than long, the parallel and nearly straight sides
broadly rounding and converging in about apical half; punctures
rather coarse, very dense, with feeble smooth line centrally; scutel-
lum quadrate, densely albido-squamose; elytra a third to fourth
longer than wide, the notably oblique sides only very feebly arcuate,
the apex rapidly obtuse, at the moderate humeral prominences
BARINE 421
distinctly wider than the prothorax, almost twice as long; striz
rather coarse; intervals generally two to three times as wide as the
strie, rugosely punctate, becoming’ very narrow toward the suture
posteriorly. Length (o' 9) 3.2-3.7 mm.; width 1.35-1.6 mm.
Kentucky (locality unrecorded). Five examples.. .inspectus n. sp.
Form elongate-subovoidal, convex, much larger, black throughout, the’
squamules of the pronotum small, slender, sparse and very incon-
spicuous, those of the strial intervals large, suboval, bright yellowish,
in two or three irregular series and close, though not dense, those of
the under surface oval, white and dense; beak in the male not quite
as long as the head and prothorax, stout, feebly arcuate and slightly
tapering, roughly sculptured, opaculate, with the antenne inserted
distinctly beyond the middle, the tooth of the club small, obtuse
and not very prominent; prothorax unusually large, barely a fifth
wider than long, the sides evenly and distinctly arcuate, rounding
inward basally, widest before the base; apex feebly constricted,
half as wide as the base, which is bisinuate, the lobe moderate;
punctures moderate but very dense, with vestiges of a narrow
smooth line centrally, the scutellum subogival, densely squamose;
elytra very obtusely parabolic, a third longer than wide, at the
moderate humeral prominences barely at all wider than the pro-
thorax, only about three-fifths longer; striae very deep, rather coarse
and abrupt; intervals from two to nearly three times as wide as
the striez, punctato-rugose, the first much narrowed posteriorly.
Length (o’) 4.8 mm.; width 2.1 mm. Kentucky (locality unre-
corded) 1 Ome exanipleines2 osiil.7 Davies 2 bu. eee boonei n. sp.
8—Outline broadly subrhombic-oval, black throughout, dull in lustre,
the white lineiform scales well separated but subequal throughout
the upper surface, broad and dense scales of the under surface
white; beak nearly straight, abruptly bent at base in both sexes,
half as long as the body and smooth (@ ), or shorter, opaque, stouter,
more quadrate in section and sparsely squamulose (co); antennz
inserted at four-sevenths (Q) or three-fifths (o"); prothorax two-
fifths (co) to one-half (2) wider than long, the sides broadly, sub-
evenly arcuate, becoming parallel basally and oblique apically;
apex about half as wide as the base; punctures coarse, deep and
very dense, with feeble vestiges of smooth line centrally; basal lobe
a fourth the total width; elytra broadly parabolic, at the obtusely
prominent humeri distinctly wider than the prothorax, two-thirds
(co) to three-fourths (2) longer; striae rather coarse; intervals
subequal, between two and three times as wide as the strie, with
very coarse contiguous punctures, the scales each decumbent within
a puncture. Length (o' 2) 4.2-4.8 mm.; width 2.0-2.25 mm.
Nierthv@atalinas, cue reed see eee pulverulentus Csy.
Outline somewhat similar but more abbreviated, deep black, the pro-
thorax feebly rufo-piceous; vestiture similar, as is also the beak in
the female, the antennal funicle somewhat longer; prothorax three-
sevenths wider than long, the sides less evenly arcuate, parallel and
feebly arcuate basally, becoming gradually rounded, oblique and
nearly straight anteriorly; apex narrower, much less than half as
422 MEMOIRS ON THE COLEOPTERA
wide as the base, the basal lobe narrower; punctures coarse and
dense, the smooth median line distinct, narrow, even and almost
entire, being slightly abbreviated at apex; elytra still shorter,
barely a fifth longer than wide, obtusely parabolic, at the humeral
swellings distinctly wider than the prothorax, three-fourths longer;
strie, intervals and sculpture nearly as in the preceding; met-
episterna a little shorter and narrower, their inner margin somewhat
more strongly sinuous. Length (2) 4.0 mm.; width 2.0 mm.
Texas (Luling) Wickham. Siecn..s% lenses as lulingensis n. sp.
9—Prothorax more or less inflated, especially in the female, and widest
before che bases. vic i ane oie tt es ee ee eee ee 10
Prothorax widest at the base, not inflated laterally................. 20
10—Pronotal punctures more or less coarse and isolated, circular; larger
Species, \ExcepLineGomvendenseinels acs. d Ae SR ee eae Ee II
Pronotal punctures not so coarse and denser as a rule, often crowded. .13
11—Prothorax nearly as long as wide, the basal lobe very feeble. Elon-
gate-oval, convex, rather shining, deep black throughout; squamules
of the upper surface small, slender, sparse and inconspicuous though
whitish, the under surface with large dense white scales; beak in the
male longer than the head and prothorax, feebly arcuate, gradually
more so basally, sulcate and coarsely punctate; antennz inserted
at four-sevenths, the funicle slender, with only its last joint wider,
the first elongate, the club with the tooth basal and rather small;
prothorax only a sixth wider than long, the sides evenly converging,
broadly and evenly arcuate from very near the base, the apex
sinuate medially and much less than half as wide as the base;
punctures rather coarse, deep, separated by a third to half their
diameters, with dense and longitudinally ruguliform sculpture at
the sides; elytra with oblique and feebly arcuate sides and obtusely
rounded apex, three-sevenths longer than wide, at the prominent
humeri distinctly wider than the prothorax, only two-thirds longer,
the grooves coarse, abrupt and very deep; intervals from one-half
wider than, to twice as wide as, the grooves, rather coarsely, con-
fusedly punctato-rugose. Length (co) 5.7 mm.; width 2.6 mm.
Kansas: (DouglasiCo))-{Snowisanieancae te eine eee snowi n. sp.
Prothorax much shorter than wide, more inflated and with well developed
basalilobeyc\fidsa tied Je ees Wi et Be aa te 12
12—Body (@) broadly oblong-suboval, convex, rather shining, deep
black; squamules of the upper surface minute, very sparse and
wholly inconspicuous, beneath large, whitish and dense as usual;
beak in the female smooth, subcylindric, sensibly arcuate, more ‘so
basally and nearly half as long as the body; antennz inserted barely
beyond the middle, the funicle very slender; prothorax large, nearly
one-half wider than long, widest barely behind the middle, the sides
strongly, subevenly arcuate, gradually strongly converging from
slightly before the middle; apex sinuate at the middle, barely three-
sevenths as wide as the base; surface with unusually arcuate profile
above, rapidly sloping anteriorly; punctures coarse, deep, separated
by half their diameters or more, with a smooth median line centrally
and at apex; elytra obtusely parabolic, at the. swollen humeri but
BARIN 423
little wider than the widest part of the prothorax, fully three-fourths
longer; grooves coarse, very abrupt and deep; intervals from less
than two to about three times as wide as the grooves, coarsely,
closely and confusedly punctate. Length (2) 6.0 mm.; width 2.8
mm. Kansas (locality unrecorded)............... robustus n. sp.
Body less broadly and more rhomboidally oval, convex, not so shining
and more densely sculptured, black throughout; squamules of the
upper surface small and slender, whitish, sparse but distinct; beak
(o') arcuate, stout and sulcate, punctate, dull, minutely, sparsely
squamulose and a little longer than the head and prothorax, or
(2) alittle longer, smooth and more cylindric, similarly more rapidly
arcuate at base; antennz (o’) moderate in length, the last funicular
joint transverse, the club large, rather thick, with distinct tri-
angular internal basal tooth, or (Q) with longer, very much more
slender funicle and smaller, narrower club; prothorax almost one-
half wider than long, the sides subevenly rounded, more converging
anteriorly, widest but little before the base; punctures not quite so
coarse as in the preceding and almost in mutual contact, with more
-or less evident smooth line centrally; elytra parabolic, a sixth (9)
to a fourth (0) longer than wide, at the prominent humeri distinctly
wider than the prothorax, the grooves very deep and abrupt;
intervals two to three times as wide as the grooves, coarsely, closely
punctate. Length (o' Q) 5.6-5.75 mm.; width 2.65 mm. North
RGU rat maraeak ites ati adh sisi ahe ticles « x'sla@w oa) acl eee denticornis Csy.
Body rather smaller and less stout, oval or oblong-oval, convex, black
throughout, slightly shining, the squamules above small and whitish
but sparse and rather inconspicuous though very evident on the
elytra, oval, dense and white beneath, fine and rather sparse on the
femora; beak (co) rather thick, dull and strongly sculptured, much
longer than the head and prothorax, nearly straight, gradually
arcuate basally, or (9) somewhat longer, smooth, gradually and
distinctly tapering, arcuate, rapidly more so in about basal half;
antenne inserted at three-fifths (co) or four-sevenths (Q), the
funicle (o’) with the last joint much larger and transverse, the tooth
of the club relatively small, or (Q) very slender, the club smaller;
prothorax a third (o") to nearly one-half (2) wider than long, the
sides subevenly arcuate, more so in the female; punctures deep,
rather coarse and very close though narrowly separated, the median
smooth line narrow, more or less distinct and somewhat tumid;
elytra obtusely parabolic, very much wider inthe female, only very
slightly wider than the prothorax and three-fourths longer; grooves
moderately coarse, very deep; intervals two to nearly three times
as wide as the grooves, coarsely, closely punctate. Length (o 2)
4.75-5.0 mm.; width 2.0-2.3 mm. Missouri and Mississippi
(Vicksburg). Five specimens................ missourianus n. sp.
Body very much smaller than in any of the preceding species of this
section, rather narrow and gradually attenuate behind, black, some-
what shining; upper squamules small, slender, not close and incon-
spicuous; beak in the female slender, smooth, arcuate, nearly half
_ as long as the body, the antennz inserted just beyond the middle,
424
MEMOIRS ON THE COLEOPTERA
the funicle long and very slender; prothorax nearly a third wider
than long, the sides subevenly arcuate, gradually more converging
anteriorly; apex truncate, half as wide as the base, the punctures
relatively rather coarse, deep and close but not quite in mutual
contact; median smooth line entire, narrow anteriad, broad pos-
teriad; basal lobe very short, broadly rounded; elytra three-sevenths
longer than wide, at the rather prominent humeri scarcely at all
wider than the widest part of the prothorax, almost four-fifths
longer; sides converging and barely visibly arcuate to the obtusely
rounded apex, which is however rather narrower than usual; grooves
moderate but very abrupt and deep; intervals not alternating much
and between two and three times as wide as the grooves, coarsely
punctato-rugose. Length (9) 3.6 mm.; width 1.38 mm. Ken-
CLES, EF SRS Oe ea ee N82 eee .....Convergens n. sp.
13—Prothorax not evidently narrower than the elytra.............. 14
Prothorax distinctly narrower than the elytra..................00- 15
14—Oblong, not shining, black, the legs and antenne rufescent; squam-
ules above small but evident on the pronotum, broader though
linear, well separated but rather conspicuous and whitish on’ the
elytra, oval, dense and yellowish-white beneath; beak in the male
thick, rather tapering, very feebly arcuate, dull and strongly sculp-
tured, longer than the head and prothorax, the antenne inserted
near three-fifths, the club with a very minute basal tooth; prothorax
not quite one-half wider than long, the broadly arcuate sides but
little more rounding and converging in about apical half; punctures
rather small and very densely crowded throughout, with the narrow
irregular smooth median line not quite entire; elytra very obtusely
subparabolic, the converging sides but feebly arcuate, the apex
obtusely rounded, scarcely a fourth longer than wide, with the
humeral prominences feeble, two-thirds longer than the prothorax;
strie rather coarse, deep; intervals not regularly alternating but
between two and three times as wide as the striz. Length (c")
4.2 mm.; width 1.9 mm. Arkansas (Little Rock).
pinguescens Csy.
Oblong-suboval, more elongate, more convex and with more inflated
prothorax, black, not shining; beak in the male thick, strongly
sculptured, evenly and moderately arcuate, not quite as long as the
head and prothorax, the antenne inserted rather beyond three-
fifths, the basal tooth of the club acutely angulate, moderate but
distinct; prothorax two-fifths wider than long, the sides strongly
and subevenly arcuate throughout, widest just behind the middle;
apex fully half as wide as the base, the basal lobe rather prominent;
punctures not coarse though larger than in the preceding, very dense
throughout, without smooth median line, the squamules brownish-
white, small, not very slender but numerous and distinct; elytra
more regularly parabolic and longer, a third longer than wide,
hardly as wide as the widest part of the prothorax and about three-
fourths longer, the humeral swellings feeble; grooves deep; intervals
subequal, between two and three times as wide as the grooves,
coarsely punctato-rugose and with broadly linear and rather sparse
BARIN 425
but conspicuous, whitish scales; white scales of the under surface
large and dense. Length (o’) 4.35 mm.; width 1.9 mm. Ken-
PGR SS oP PLES UP ore il he 2 as SUE inflaticollis n. sp.
15—Body notably broad. Oblong-suboval, only moderately convex,
black, the prothorax and antennal club dull rufous; scales of the
upper surface yellowish, fine but numerous and evident on the
pronotum, broader though linear, well separated, confused and
notably conspicuous throughout on the strial intervals; beak in the
female smooth, evenly arcuate and gradually tapering from base to
apex, distinctly longer than the head and prothorax, the antenne
inserted at the middle; prothorax nearly one-half wider than long,
widest very near the base, the sides thence slightly converging and
very feebly arcuate, more rapidly, obliquely rounding in apical
third; apex feebly constricted, half as wide as the base, the basal
lobe rather abrupt; punctures not very small, deep, circular, very
close but rarely in mutual contact, recalling somewhat the sculpture
in denticornis and related forms but finer; median smooth line
distinct and subentire; elytra with the sides slightly oblique and
very moderately arcuate, the apex broadly and obtusely rounded;
grooves deep but not very coarse; intervals subequal, about three
times as wide as the grooves, closely, coarsely and confusedly
punctate. Length (2) 4.4mm.; width2.1mm. Missouri (locality
Piviretileig. ola) Us Webi haa tae letra ABER LP gn SE latiusculus n. sp.
Body never very notably broad in’ outline: e205. 2a ee ee 16
16—Species very small in size, with narrower prothorax and prominent
humeri. Rather narrow, convex, deep black throughout; squam-
ules of the upper surface small, sparse and inconspicuous, the larger
oval white scales beneath narrowly separated among themselves;
beak in the male stout, subopaque and strongly sculptured, nearly
straight, abruptly bent at base, almost half as long as the body;
antenne inserted near three-fifths, the tooth of the club basal and
very small; prothorax a third wider than long, widest very nearly
at the base, the sides feebly converging and broadly arcuate, grad-
ually more converging and arcuate before about the middle; apex
scarcely at all constricted, rather more than half as wide as the base;
punctures relatively somewhat coarse and deep but dense, with
traces of a smooth line centrally; basal lobe strongly binodulate at
apex; elytra with the oblique sides feebly arcuate to the rapidly
rounded but not very obtuse apex, two-fifths longer than wide,
much wider than the prothorax and nearly twice as long; grooves
moderate; intervals equal, two and one-half times as wide as the
grooves and somewhat coarsely punctato-rugose. Length (0) 3.0
mm.; width 1.2 mm. District of Columbia. A single example.
prominens n. sp.
Species similarly very small, still narrower and with less prominent
humeri. Narrow and convex, more parallel, black, the tarsi rufo-
piceous; squamules of the upper surface rather small, indistinct
on the pronotum, whitish, less slender and evident though sparse
on the elytra, in one to two or three rows on the intervals; beak in
the male rather strongly, subevenly arcuate, longer than the head
426 MEMOIRS ON THE COLEOPTERA
and prothorax, thick, dull in lustre, the antenne inserted behind
three-fifths, with slender funicle and small and feeble basal tooth of
the club; prothorax less than a third wider than long, the sides sub-
parallel and feebly arcuate, rounding in apical third or fourth, also
rounding at the immediate base; punctures strong and dense, the
median smooth line briefly and faintly traceable centrally; upper
profile evenly but rather strongly arcuate; base broadly bisinuate;
elytra nearly a third longer than wide, the sides feebly oblique ©
and slightly arcuate to the rather obtusely rounded apex, at the
feebly tumid humeri slightly wider than the prothorax, three-fourths
longer; grooves moderate, one-half to a third as wide as the coarsely
punctato-rugose intervals; *white rounded scales beneath dense
though slightly separated. Length (co) 2.7 mm.; width 1.2 mm.
Kemtuiekys cit capac cal (ose. tals ie eo eee ert oS oe pusillus n. sp.
Species of average size or somewhat above, much larger than the two
PROCES 24. ow) wahenieie ned eR Res ns hn a dete 17
17—Prothorax widest slightly behind the middle, the sides strongly
AFCA. iu) bis ceed ake Ss ids io Pate eae eit eee eee 18
Prothorax widest only very little before the base, the sides subparallel
and but feebly arcuate, gradually rounding from about the middle..19
18—Body rather narrowly subrhomboid-oval, convex, not shining, black
throughout; squamules above small and slender, scarcely discover-
able on the pronotum, visible but very inconspicuous on the elytra;
beak in the male thick, dull and sculptured, feebly, subevenly arcu-
ate and slightly longer than the head and prothorax; antenne
inserted at three-fifths, the club rufescent; prothorax barely more
than a fourth wider than long, the sides subevenly arcuate through-
out, a little more converging apically than basally; apex four-
sevenths as wide as the base; surface convex, evenly arcuate above
in profile; punctures not very coarse but strong, deep and very
dense, the smooth median line narrow, subentire; basal lobe short;
scutellum deeply emarginate, with prominent angles, denuded in
the type; elytra a fourth longer than wide, the rather strongly
oblique sides. feebly arcuate to the evenly rounded apex, with the
humeral prominences feeble, three-fourths longer than the pro-
thorax; grooves not coarse but deep; intervals punctato-rugose,
alternating slightly, from three to four times as wide as the grooves;
white scales of the under surface narrowly separated. Length, (0%)
3.5 mm.; width 1.5 mm.- Texas (Dallas),—Wickham. A single
Gmail DIGy s «5) wealaiiane + Sadvetyei Becaeee mide mae kee eee rotundicollis n. sp.
Body (co) oblong, subrhomboid and convex, dull black throughout, the
prothorax scarcely a third wider than long, with subevenly but
feebly arcuate sides, more converging anteriorly and with small and
densely crowded punctures, the squamules of the upper surface
small, whitish, fine, sparse and wholly inconspicuous, except at
apex and base on the pronotum, more visible on the elytra, the beak
feebly arcuate, thick, flat, sculptured and opaque at the sides as
‘usual and barely as long as the head and prothorax, with the an-
tennz inserted at three-fifths, or (2) distinctly stouter and more
abbreviated, the prothorax almost one-half wider than long, more
BARINZ 427
rounded at the sides, more oblique anteriorly, with the punctures
distinctly larger and much less closely crowded, the elytra shorter,
with somewhat more oblique and more arcuate sides, the beak
longer, slender, smooth, about half as long as the body, feebly
arcuate, bent at base and with the antennz inserted at four-sevenths.
In both sexes the thoracic apex is more than half as wide as the
base, the elytral apex obtusely rounded, the humeral swellings
rather prominent and the strial intervals subequal and between
two and three times as wide as the grooves, closely punctato-
rugose as usual. Length (o' 9) 3.35-4.2 mm.; width 1.4-1.8 mm.
Indiana, Kentucky and Missouri (St. Louis). Sixteen specimens.
salebrosus Csy.
19—Body larger, rather stouter and more convex than in the preceding,
.deep black throughout, somewhat shining, the squamules of the
upper surface small, fine, sparse and very inconspicuous even on the
elytra, the moderately large oval whitish scales of the under surface
evidently though narrowly separated; beak in the male thick,
feebly tapering, very slightly arcuate, bent at base, strongly sculp-
tured but not very much flattened at the sides, as long as the head
and prothorax; antenne inserted at three-fifths, the outer funicular
joints barely wider than long, the tooth of the club obtuse and
inconspicuous; prothorax large, very convex, with the upper profile
strongly arcuate and obliquely sloping and straight anteriorly, only
a fifth wider than long, the sides subparallel and feebly, evenly
arcuate, gradually a little more so and strongly converging anteriorly;
apex scarcely half as wide as the base; punctures very moderate and
extremely: dense throughout, the smooth median line evident
centrally; elytra evenly parabolic, scarcely a fourth longer than
wide, at the rather prominent humeri evidently wider than the
prothorax, only about three-fifths longer, the grooves rather narrow
but deep, the punctato-rugose intervals subequal and from slightly
less to more than three times as wide as the grooves. Length (0)
4.2-4.75 mm.; width 1.65-2.0 mm. Indiana. Two examples.
convexus n. sp.
20—Prothorax coarsely punctate. Body oblong-suboval, convex, some-
what shining, pale ferruginous-red in the type, the squamules of
the upper surface small, sparse and entirely inconspicuous; beak
in the female smooth, rufo-piceous, feebly tapering, distinctly
arcuate, straighter apically, not half as long as the body, the antenne
inserted just beyond the middle; prothorax short, one-half wider
than long, the upper profile strongly arcuate, obliquely sloping and
straighter anteriorly; sides evenly and strongly rounded in about
anterior, becoming parallel and nearly straight in basal, half; apex
feebly constricted and not quite half as wide as the base, the basal
lobe short and broad; punctures close-set or subcontiguous; smooth
median line visible except toward base and apex and somewhat
tumid; elytra subparabolic with the apex rather rapidly obtuse, a
fourth longer than wide, at the moderate humeri very little wider
than the prothorax, four-fifths longer; grooves moderate, deep, the
strongly punctato-rugose intervals subequal and about three times
428) > MEMOIRS ON THE COLEOPTERA
as wide as the grooves. Length (2) 3.4 mm.; width 1.7 mm.
Iowa (Iowa City),—Wickham. One example.......iowensis n. sp.
Prothorax less coarsely to finely and usually very densely punctate, at
least amethe imal: fit rvi ctinis eit a0 Saat, oe eer nen de eta eee nae 21
21—Prothorax dilated anteriorly, so that it is wider before the middle
than at base. Form subparallel, convex, black, the legs rufescent;
squamules of the upper surface small and linear, whitish and evident
on the elytra; beak in the male almost evenly arcuate, feebly
tapering, dull in lustre and half as long as the body, the antenne
inserted at fully three-fifths, the first and second funicular joints
equal in length, the last transverse, the club paler, apparently with-
out basal denticle; prothorax not quite a third wider than long, the
sides strongly rounded before the middle, straight and feebly con-
verging thence to the base; apex feebly constricted, half as wide as
the base; punctures not coarse but strong, dense and distinctly
defined, the median smooth line traceable medially; elytra feebly
oblique and but slightly arcuate at the sides to the obtusely rounded
apex, a fourth longer than wide, at the rather prominent humeri
slightly wider than the prothorax, two-thirds longer; grooves
moderate though abrupt and deep, a third to fourth as wide as the
densely and not very coarsely punctato-rugose intervals; under
surface with dense white scales. Length (c’) 3.2 mm.; width
1.25 mm-. “TPexas (Dallas)——Wickham 2-22); 2-0 parallelus n. sp.
Protherax of theiusuall form iyy., aoe oe ie ces 2 eee eect eet ed he een 22
22—Squamules of the elytra linear but white and distinct, arranged in
single lines, becoming double basally on some of the intervals;
basal thoracic lobe feeble. Body narrowly oval, strongly convex,
black throughout, not shining; squamules of the pronotum small,
sparse and inconspicuous; beak in the male evenly arcuate, not
very thick, dull, strongly sculptured and half as long as the body;
antenne inserted but slightly beyond the middle, the first two
funicular joints subequal in length, the club paler, narrower than
usual in the male and not distinctly dentate at base; prothorax
barely a fourth wider than long, the sides parallel in basal fourth,
thence feebly converging and nearly straight to apical fourth, then
gently rounding to the distinctly constricted apex, which is four-
sevenths as wide as the base; punctures moderate and very dense
throughout; smooth median line narrow and irregular, traceable
centrally; elytra almost a third longer than wide, narrowly parabolic
but with very feebly arcuate sides, at the feebly tumid humeri a
little wider than the prothorax; grooves deep, the intervals slightly
alternating, coarsely punctato-rugose and two to two and one-half
times as wide as the grooves; white scales dense on the under surface.
Length (co) 3.0 mm.; width 1.25 mm. Kentucky. Levette col-
lection, ove he. ke besa Eee see eee defectus n. sp.
Squamules of the elytra linear, white and distinct though small and not
close-set, in single series or rather broadly confused on the alternately
very narrow and rather broad intervals. Body moderately stout,
subrhomboid-oval, convex, black throughout, the pronotal squam-
ules small, fine and inconspicuous, the dense scales of the under
BARINAE 429
surface white; beak in the female slender, smooth, feebly arcuate,
slightly bent and thicker toward the head, half as long as the body;
antenne inserted just beyond the middle, slender; prothorax a
third wider than long, the sides very evenly arcuate from base to
apex, subparallel basally, converging apically, the apex not con-
stricted and distinctly less than half as wide as the base; punctures
moderately coarse, larger and less dense than in the preceding species,
distinctly separated throughout, with the smooth median line very
irregular but subentire; elytra in outline nearly as in defectus, at the
more prominent humeri slightly wider than the large prothorax and
only about three-fifths longer; grooves coarse; intervals as wide
as the grooves to twice as wide; punctures rather coarse and very
close but clearly defined. Length (9) 3.7 mm.; width 1.65 mm.
Kentucky Bevette\ collectionicg voce. kc Gh sass alternans n. sp.
Squamules of the elytra confused on all the intervals............... 23
23—Prothorax unusually elongate, barely visibly shorter than wide.. .24
Protneran distinetly: wider thamlong.:') 6. sie eee a2 ee Byars 25
24—Form narrowly subrhomboidal, moderately convex, black, the legs
not paler; squamules above very fine, whiter and distinct on the
elytra; beak in the male notably slender, arcuate, dull and coarsely
sculptured, slightly constricted near the base, half as long as the
body, the antenne piceo-rufous, inserted just beyond the middle,
the second funicular joint distinctly shorter and narrower than the
first, the last transversely cuneiform, the club large, the tooth very
short, feeble and obtuse; prothorax a fifth or sixth wider than long,
the sides feebly converging and nearly straight, gradually rounding
in apical third; apex feebly constricted and half as wide as the base:
punctures small, dense; smooth median line only vestigial centrally;
elytra with rather prominent humeral swelling, slightly wider and
three-fourths longer than the prothorax, a third longer than wide,
the sides feebly oblique and slightly arcuate to the relatively some-
what broadly obtuse apex; grooves moderate; intervals equal, twice
as wide as the grooves, the punctures rather coarse and very close
but clearly outlined; large dense scales of the under surface almost
white. Length (o') 3.2 mm.; width 1.28 mm. Kentucky. Lev-
Same OMT MESCROREND me ucch stein cy 30h, vk vc lane vale SEM a as regularis n. sp.
Form less narrow and more rhomboid, the sides of the elytra more
oblique and barely arcuate to the relatively narrower, though ob-
tusely rounded apex; coloration and vestiture nearly similar; beak
in the male thicker, not constricted near the base, dull and strongly
sculptured, more tapering, the sides flatter and more sulcate, simi-
larly arcuate but shorter, not half as long as the body, the antenne
_ nearly similar, except that the tooth of the club is still smaller and
more feeble; prothorax larger, longer, barely visibly wider than
long, the sides and median line nearly similar; punctures much
coarser, dense; elytra broader basally, more triangular, less obtuse
at apex, a fourth longer than wide, at the prominent humeral swell-
ings distinctly wider than the prothorax, scarcely two-thirds longer;
grooves distinctly coarser than in regularis, the intervals subequal,
much wider than in that species, though scarcely twice as wide as
430 MEMOIRS ON THE COLEOPTERA
the grooves, rather more coarsely sculptured. Length (o’) 3.7 mm.;
width 1.65 mm. Kentucky. Levette collection... .longicollis n. sp.
25—Species inhabiting the Mississippi Valley, Kansas and Texas.....26
Species of the Atlantic coastal regions, east of the Appalachians... . .28
26—Prothorax evenly narrowed from base to apex, with evenly arcuate
sides. Body rather stout and strongly convex, rhomboid-oval,
black, the legs piceous; squamules above small and whitish, incon-
spicuous and sparse though evident on the elytra, large, dense,
oval and white beneath; beak in the female smooth, moderately
slender, arcuate, only as long as the head and prothorax, the an-
tennz inserted barely beyond the middle, the first funicular joint
as long as the next two, the second elongate but thinner as usual;
prothorax a third wider than long; apex scarcely constricted and not
quite half as wide as the base; punctures moderate, somewhat
uneven in distribution but for the most part dense, the smooth
median line narrow but subentire; elytra broadly and obtusely
parabolic, evidently wider than the prothorax and three-fourths
longer, scarcely a fourth longer than wide, the humeral swellings
moderate; grooves moderately coarse, very deep, twice—rarely
nearly three times—as wide as the grooves, rugosely punctate.
Length (9) 4.3 mm.; width2.0mm. Indiana. Levette collection.
ignotus n. sp.
Prothorax with the sides subparallel and very feebly arcuate to about
apical third, where they become more or less rapidly rounded to
(Seve 0(2> ee ee PTR Tae ie ced he ALR nen MURR EME! SA ecd oar ey ACe 27.
27—Form elongate-suboval, convex, black, the legs sometimes rufo-
piceous; squamules of the upper surface small and inconspicuous,
whiter, a little less slender and more distinct on the elytra; beak (o')
not very thick, dull and sculptured, feebly, subevenly arcuate and
slightly longer than the head and prothorax, the antenne at three-
fifths, the tooth of the club small and obtuse, or (Q ) smooth but
nearly similar in length and degree of arcuation, the antennz less
apical and more slender; prothorax a fourth to third wider than long,
the punctures not coarse, very dense, the smooth line obsolete;
elytra slightly wider than the prothorax and three-fourths (co) to
two-thirds (2) longer, the moderately oblique sides feebly arcuate
to the somewhat obtuse apex; grooves very deep and abrupt,
moderately coarse, fully half as wide as the rugosely punctate
intervals, which are mutually subequal. Length (o' 9) 3.3-3.8
mm.; width 1.35-1.8 mm. Mississippi (Vicksburg). Taken by
Cheaters. w:5 cieeieeiccd Sine teens eee ae ewes 2 ae vicksburgensis n. sp.
Form more oblong or subparallel, strongly convex, black, the squamules
above slender, whitish, not very conspicuous, more so in the female;
beak (oc) thick, feebly arcuate, dull, the sides flattened, barely as
long as the head and prothorax, the antennz inserted rather beyond
three-fifths, the tooth of the club small and obtuse, obscure, or (2 )
smooth, arcuate and slightly longer than the head and prothorax,
the antenne but slightly beyond the middle; prothorax a third
wider than long, the barely at all constricted apex truncate and half
as wide as the base; punctures rather small but distinct, coarser in
BARINZ 431
the female, dense, the smooth median line feebly tumescent, not
entire; elytra a third (o’) or a fourth (2 ) longer than wide, slightly
wider than the prothorax and three-fourths (co) to three-fifths (9° )
longer, the very moderately oblique sides broadly arcuate to the
rapidly rounding obtuse apex, the humeral prominences moderate;
grooves deep and abrupt, one-half to a third as wide as the rugosely
punctate intervals, which perceptibly alternate in width. Length
(o 2) 3.8-4.2 mm.; width 1.75-1.82 mm. Texas (Dallas),—
WV IGITicetrit cere Mickie nto tate ete fd awa bwisianek Was dallasianus n. sp.
Form more rhomboid-oval, convex, slightly larger in size, black; squam-
ules of the upper surface small and inconspicuous, white, broadly
oval and dense beneath as usual; beak in the female slender, sub-
evenly arcuate, smooth and subcylindric, half as long as the body,
the antenne inserted slightly beyond the middle; prothorax a third
wider than long, in outline as in the preceding but with the some-
what coarsish punctures everywhere narrowly though evidently
separated, and not very dense as they are in dallasianus, the base
more deeply bisinuate, the truncate lobe more prominent; im-
punctate median line distinct but biabbreviated; elytra nearly a
fourth longer than wide, the moderately oblique sides feebly arcuate
to the rapidly rounded obtuse apex, at the moderately prominent
humeri distinctly wider than the prothorax, two-thirds longer;
grooves moderately coarse; intervals mutually equal, coarsely
punctato-rugose, between two and three times as wide as the
grooves. Length (2) 4.5mm.; width2.1mm. Kansas (Onaga),—
aR ULSI Pa Rees cart tA ars "> ge ada go vid ciinto vi cie ne ak OAS as onagensis n. sp.
28—Body elongate-oval, convex, deep black, the squamules above very
small and slender, sparse and inconspicuous throughout, the oval
scales of the under surface smaller than usual and distinctly separ-
ated; beak in the male evenly arcuate, rather thick, coarsely but not
densely sculptured and distinctly longer than the head and pro-
thorax, the antennze inserted at three-fifths, the tooth of the club
small and feeble, obtuse; prothorax not quite a third wider than
long, the sides evenly and feebly converging and feebly, subevenly
arcuate, a little more so approaching the slight apical constriction;
apex briefly subtubulate, half as wide as the base; punctures rather
strong, not notably small, irregularly dense, the smooth median
line obsolete; basal lobe rather narrow and prominent; elytra at the
slightly prominent humeri a little wider than the prothorax, three-
fourths longer, very obtusely rounded at apex, the feebly oblique
sides somewhat arcuate; grooves coarse and deep; intervals punc-
tato-rugose, somewhat alternating in width, from one-half to four-
fifths wider than the grooves. Length (o’) 3.5 mm.; width 1.4 mm.
Massachusetts (Southboro),—Frost..............6. cribrum n. sp.
Body larger, more oblong-suboval, strongly convex, black throughout;
squamules above very small, sparse, slender and inconspicuous,
beneath rather dense, oval and whitish; beak in the male not very
thick, longer than the head and prothorax, feebly arcuate, bent at
base, strongly sculptured, the antenne inserted near three-fifths,
the subbasal tooth of the club small but prominent and sharply
432 MEMOIRS ON THE COLEOPTERA
angulate, the funicle simple, as usual in the forms here considered;
prothorax a fourth wider than long, the sides feebly converging and
only slightly arcuate to about apical third, where they become
gradually rounded to the very faintly constricted apex, which is
less than half as wide as the base; punctures rather coarsish, very
distinct, irregularly dense, the smooth median line distinct and
entire; elytra broadly and obtusely parabolic, with very moderately
prominent humeri, only very slightly wider than the large pro-
thorax and scarcely three-fifths longer; grooves moderately coarse,
deep, abrupt; intervals alternating slightly in width, with coarse
and dense but distinctly defined punctures, from less than twice to
two and one-half times as wide as the grooves. Length (0) 4.3
mm.; widthi1.9mm. Pennsylvania (Conewago)...pennianus n. sp.
Body much smaller, more narrowly elongate-oval, convex, deep black,
the squamules of the upper surface small, sparse and inconspicuous,
white, rather evident and disposed in large part in single lines on the
elytra; whitish scales of the under surface moderate in size and
rather evidently separated; beak in the male not very thick, dull
and sculptured, very feebly arcuate, gradually more so basally and
much longer than the head and prothorax, the antenne inserted
just behind three-fifths, the basal tooth of the club small, feeble and
obtuse; prothorax nearly a third wider than long, the sides con-
verging and moderately and very evenly arcuate from base to apex,
the latter truncate, not in the least constricted and fully half as
wide as the base; punctures moderate, very dense, the smooth
median line evident but irregular, not attaining the apex; elytra a
third longer than wide, slightly wider than the prothorax and three-
fourths longer, with moderately prominent humeri, obtusely rounded
in nearly apical third, the sides thence feebly diverging and scarcely
at all arcuate to the humeri; grooves moderate; intervals mutually
equal, rather coarsely but not densely, often uniserially, punctate,
and not quite twice as wide as the grooves. Length (co) 2.85 mm.;
width 1.23 mm. New York (locality unrecorded).....parvus n. sp.
It is highly probable that the pale ferruginous coloration in the
single type of zowensis may be due to immaturity, although there
are no other evidences of this condition; the definition of the species
is, however, based upon other features, and especially the short
compact oblong outline and the very coarse pronotal punctures.
Defectus and alternans, though coming from the same region and
based upon unique types of different sexes, are, I think, amply
distinct as species, their entire habitus, sculpture and elytral
striation being strikingly different and in no way sexual, judging
at least by series of males and females of other species. The large
and densely squamose species of the coloradensis type, are evidently
allied more or less closely to the Mexican Jarvatus Boh.; the author
BARIN 433
states that the dense thoracic scales are rounded but does not allude
in any way to the conspicuous white elongate squamules arising
from the strial punctures in the species mentioned. Our only
species having large and linearly suboval pronotal scales, have
these strial squamules distinct, excepting ochreosus, where they
become so small and slender as to be easily overlooked; but here,
the vestiture is brownish-yellow and not white as stated of larvatus.
The following Mexican species is of a common Sonoran type in
regard to form, sculpture and habitus, but the vestiture is longer
and more bristling:
*Odontocorynus histriculus n. sp—Oblong, moderately convex, black
throughout, feebly shining, the squamules of the upper surface slender,
white, much longer than usual, rather sparsely and uniformly distributed
and in part suberect and bristling; scales of the under surface large,
dense, white, oblong-suboval and closely decumbent as usual; beak in
the female smooth, minutely and sparsely punctate, coarsely at base,
cylindric, feebly tapering, arcuate and half as long as the body, the
antenne inserted just beyond the middle, the first two funicular joints
elongate, the first much the longer; prothorax short, not quite one-half
wider than long, the sides feebly converging and slightly arcuate, grad-
ually more rounding and oblique in fully apical third, the apex scarcely
at all constricted and half as wide as the base; punctures coarse, close
and subrugose, the median smooth line distinct and subentire but
irregular; basal lobe abrupt and broadly rounded as usual; elytra
broad, distinctly wider than the prothorax and almost twice as long, a
fifth longer than wide, the humeral swellings very moderate; sides very
slightly oblique and feebly arcuate; apex broadly and obtusely rounded;
grooves moderate, deep, the intervals coarsely and confusedly punctato-
rugose, alternating slightly and from two to three times as wide as the
grooves. Length (2) 4.0 mm.; width 1.9 mm. Mexico (Cuernavaca),
—Wickham.
In the more northern series this species may be placed just after
pulverulentus and lulingensis, but the strial punctures are small
and obscure and do not bear slender squamules.
The other Mexican species described below do not resemble any
of the more northern forms of the genus, being more elongate and
with sparser and more feeble vestiture and sparser sculpture. In
all but swbglaber and subvittatus, where the thoracic apex is as in our
species, the sides of the more strongly tubulate apex are acutely
dentate; this is the condition in latiscapus Chmp., also, but here
the hair-like sparse vestiture is conspicuous, when compared with
the almost glabrous upper surface of limatulus and vernicicollis.
T. L, Casey, Mem. Col. IX, Feb. 1920.
434 MEMOIRS ON THE COLEOPTERA
*Odontocorynus subglaber n. sp.—Elongate-suboval, convex, shining,
deep black throughout, the squamules above almost wanting on the
pronotum, very small, slender, sparse and inconspicuous on the elytra;
under surface with fine close-set punctures, bearing small slender and
rather well spaced white squamules, larger and denser toward the sides
of the met-episterna and last three ventral segments; beak in the male
very thick, moderately, subevenly arcuate, feebly tapering and as long
as the head and prothorax, the sides flattened, deeply sulcate, punctate
and dull; antennz inserted at three-fifths, imperfect in the type, but the
outer funicular joints are transverse and with corone of smaller and
finer squamules than those of the preceding joints; prothorax only just
visibly wider than long, the sides feebly converging and slightly arcuate,
gradually and moderately convergent before about the middle, the apex
feebly subtubulate, half as wide as the base and perfectly simple at the
sides; punctures deep, moderately coarse, uniform and irregularly close-
set, separated by evidently less than their diameters; smooth median
line traceable centrally; scutellum small, quadrate, albido-squamose,
except along the middle posteriorly; elytra elongate, three-fourths longer
than wide, much wider than the prothorax and more than twice as long,
the sides feebly oblique, the humeri prominent and the apex circularly
rounded; striz moderately fine; intervals not coarsely but strongly, not
very densely but rugulosely punctate. Length (co) 5.7 mm.; width
2.3mm. Mexico (Puebla). :
There is no other species known to me with which this can be
closely compared, the general form and subglabrous upper surface
remind us of limatulus and vernicicollis, but the thoracic apex is
perfectly simple and not dentate at the sides, and, from any of the
forms allied to creperus Boh., it may be known by the subglabrous
dorsal surface, besides the absence of toothed sides of the thoracic
apex.
*Odontocorynus limatulus n. sp.—Very elongate-oval and convex
shining, subglabrous above, the fine sparse hair-like squamules of the
elytra barely discernible; scutellum with some more distinct and close
white squamules, extending also but more sparsely upon the basal
thoracic lobe; under surface with slender white scales, very uniform and
well spaced; beak in the male thick, not as long as the head and pro-
thorax, strongly sculptured, straight, bent a little at the extreme base,
and, beyond the antennz, oblique; antennz inserted at three-fifths, the
outer funicular joints simple though gradually more transverse and
perfoliate, the basal tooth of the club rather large and angulate; pro-
thorax a fourth wider than long, the sides evenly arcuate, becoming
parallel basally; apex constricted, impressed dorsally, more than half
as wide as the base, the lateral tooth strong and acute; punctures coarse,
separated by less than their diameters medially, more or less confluent
laterally, the smooth median line distinct but not attaining the apex;
elytra one-half longer than wide, at the prominent humeri much wider
BARIN-E 435
than the prothorax, somewhat more than twice as long, the sides feebly
oblique to the broadly and circularly rounded apex; striz moderate, the
intervals somewhat convex, coarsely, rugulosely but not densely punc-
tate, four to five times as wide as the strie#; abdomen with a small carini-
form tubercle medially at base. Length (o’) 4.65-4.9 mm.; width
1.8-2.0 mm. Mexico (Cuernavaca),—Wickham. Two examples.
Easily recognizable by the subglabrous and shining upper surface,
rather coarse sculpture, elongate-oval, convex form and other
characters as noted.
*Odontocorynus vernicicollis n. sp.—Elongate, subrhomboid-oval,
moderately convex, deep black throughout, shining; vestiture very
nearly as in the preceding; beak in the male nearly as in the preceding
but as long as the head and prothorax, deeply sulcate at the sides, the
antenne inserted at three-fifths, the three outer funicular joints rapidly
very transverse and perfoliate, the club large and subglobose, pointed
apically, without distinct basal tooth; prothorax only a fifth or sixth
wider than long, the sides evenly converging, evenly and moderately
arcuate throughout to the apical constriction; apex evidently less than
half as wide as the base, the lateral denticle acute and prominent;
punctures much smaller than in the preceding, widely separated medially,
rugosely confluent only at the extreme sides, having, near each side just
behind the middle, a small irregular smooth spot; median line broadly
impunctate but centrally only; elytra not quite one-half longer than
wide, at the notably prominent humeri much wider than the prothorax
and twice as long, or a little more, the sides more oblique and arcuate
than in limatulus, the apex relatively somewhat more narrowly rounded;
strie slightly coarser; intervals feebly convex, with strong and confused,
well spaced punctures, which are regularly circular, very close toward
base of the fifth, alternating perceptibly in width, two to three times as
wide as the strie; abdomen with a rounded smooth spot not quite basal
on the first segment, the centre of which has a very small cariniform
tubercle. Length (co) 5.7-6.2 mm.; width 2.3-2.65 mm. Mexico
(Puebla). Two specimens.
Allied to limatulus but differing in its larger size, more elongate
and polished, less coarsely and more sparsely punctured prothorax,
with relatively narrower apex, basally broader elytra, with coarser
striz, and in the antennal club, as may be inferred above.
*Odontocorynus subvittatus n. sp.—Slender, moderately convex, with
narrowed prothorax, black throughout; pronotum with very fine sparse
hair-like squamules, barely discernible, the basal lobe sparsely, the
scutellum densely, albido-squamulose, the elytra with whitish squamules,
fine and hair-like, sparse and indistinct but close-set and conspicuous on
the first, third and fifth intervals; under surface with the white squamules
coarser, abundant and distinct though not dense; beak in the male
evenly cylindric, feebly, evenly arcuate, densely sculptured and as long
436 MEMOIRS ON THE COLEOPTERA
as the head and prothorax; antenne inserted at three-fifths, the outer
four funicular joints gradually shorter and more transverse, greatly
prolonged internally, the club oblong-oval, rapidly pointed, without
tooth, its broad base resting against the wide terminal joint of the funicle,
its first joint scarcely a third of the mass; prothorax small, conical, just
visibly wider than long, the sides oblique and feebly arcuate from base to
the moderate apical constriction, subsinuate medially, the apex briefly
subtubulate and much more than half as wide as the base, not at all
dentate at the sides; punctures very moderate, extremely dense through-
out, the median line not impunctate but finely and feebly cariniform;
elytra one-half longer than wide, obtusely parabolic, at the moderately
prominent humeri fully a third wider than the prothorax, not quite two
and one-half times as long; strie not coarse but very deep; intervals
more than three to five times as wide as the striae, finely, confusedly and
loosely punctate, densely on the first, the third basally and apically and
the fifth almost throughout; abdomen very feebly impressed and less
punctate subbasally, the impression inclosing an extremely minute
feeble tubercle. Length (o’) 4.0 mm.; width 1.6 mm. Mexico (Omil-
teme, Guerrero),—H. H. Smith.
Differs from creperus Boh., in its smaller size, in the absence of
an erect spiculiform tooth at the base of the antennal club, in the
absence of a medial impunctate line on the pronotum, in the
relatively more elongate elytra, with alternately more punctate
and pubescent intervals, and, apparently also, in the relatively
smaller prothorax. Boheman does not allude to internally strongly
produced outer joints of the antennal funicle in describing creperus.
This is one of the forms included under creperus by Mr. Champion,
but it is a distinct species in many ways.
A very constant peculiarity of the large genus Odontocorynus is
the densely albido-squamose scutellum, and, to less degree, the
adjacent basal thoracic lobe; this is in fact a generic character; in
sutura-flava Chmp., the dense crust of scales extends posteriorly
along the entire suture, giving to that species an exceptional habitus.
Centrinopus Csy.
This is a distinctly isolated genus, composed of minute squamose
species and differing from Centrinus, or any of the genera closely
allied to the latter, in having the mandibles small, feebly decussate
and shallowly bifurcate within. The male has a small, erect,
slightly curved and gradually pointed process before each anterior
coxa, which however sometimes becomes obsolete as in Centrinaspis.
The eleven species now at hand are separable as follows:
BARIN 437
Scutellum larger, densely squamose, species of more northern habitat.. .2
Scutellum small, nude or with a few widely spaced squamules; species
HiOStly? Creal nh. UE Said My. here le ab iea td aavash clattce ta etal po) hale 5
2—Prothorax but slightly narrower than the elytra............... Riek
Prothorax only about three-fourths as wide as the elytra, and more
mabey lime cet Yea MA ee kale bata 7 Oat MA ee Ee 4
3—Form subrhombic-oval, convex, very closely clothed above with
parallel scales of pale ochreous color, more slender on the pronotum
and somewhat denser on strial intervals 3-5-7, the first interval
very narrow; under surface very densely yellowish-squamose at
the sides, more finely and less densely on the metasternum; beak
nearly similar in the sexes, slender, arcuate, distinctly longer than
the head and prothorax, the antenne inserted at the middle (0)
or distinctly behind the middle (2); prothorax only a fifth or sixth
wider than long, subconical, with the sides slightly more oblique
in about apical third; punctures regular, dense; elytra oval, rather
pointed behind, with moderate striz and subequal intervals. Length
(o' 9) 2.0-2.75 mm.; width 0.85-1.22 mm. Indiana, Illinois,
Pennsylvania and District of Columbia. Eighteen specimens.
helvinus Csy.
Form more abbreviated than in helvinus, the size smaller; color nearly
black, the elytra and tibiz dark rufous; squamules above yellowish,
abundant, close-set and distinct on the pronotum, slightly more
distinct toward the sides and along the median line, the strial
intervals alternating very greatly in width, almost as in alternatus,
the broader densely clothed with whitish scales, the narrower with
one or two series also of rather close-set squamules; beak in the
male long, evenly arcuate, almost half as long as the body, the
antenne inserted near two-fifths; prothorax almost a fourth wider
than long, the sides straight and feebly converging for four-sevenths,
there becoming oblique and nearly straight to the apex; punctures
strong and dense; elytra barely a fourth longer than wide, a fourth
or fifth wider than the prothorax, the sides subparallel, rounding
and subogival behind the middle; striae moderately coarse, deep,
the intervals alternately as wide as the striz and fully twice as wide.
Length (co) 1.8mm.; widtho.8 mm. Indiana. Levette collection.
brevior n. sp.
Form stouter, more oval and larger in size, the squamules of the upper
surface paler yellowish-white, fine on the pronotum but coarser and
closer toward the sides and in a narrow medial line, in a manner
never more than faintly discernible in helvinus, the elytra with the
strial intervals alternating much more markedly in width, the nar-
rower with very few fine squamules, the broader densely squamulose,
producing a conspicuously vittate appearance, the vitte of the third
and seventh intervals uniting near the apex, continuing thence to
the apex as a single vitta; beak longer, nearly half as long as the
body, more arcuate, the antennz inserted slightly behind the
middle (o’) or at basal third (2); prothorax larger and more
inflated than in helvinus, densely punctate, more than a fourth
wider than long, the sides converging and broadly, strongly arcuate
438
MEMOIRS ON THE COLEOPTERA
from base to the faint apical constriction; apex less than half as
wide as the base; elytra ovoidal, the strie coarser and deeper than
in helvinus. Length (o Q@) 2.25-2.85 mm.; width 0.9-1.3 mm.
Maryland and District of Columbia to Mississippi (Agricultural
College)...» Sixvexamples...; cia op eae haste oe eee alternatus Csy.
Form more abbreviated than in alternatus, the size smaller; color simi-
larly obscure rufo-piceous; scales above pale yellowish, slender and
moderately close on the pronotum, a little more visible laterally,
the strial intervals almost uniformly but loosely clothed with
slender squamules, not forming more than two irregular lines on
each, but coarser and dense on the third behind the middle; beak
shorter and less arcuate, the antenne inserted slightly (0), or
much (@), behind the middle; prothorax distinctly shorter and
more transverse, two-fifths to one-half wider than long, the sides
strongly, subevenly arcuate, gradually becoming parallel basally;
punctures dense; elytra shorter, broadly ovoidal, the strie deep but
only moderately coarse; intervals subequal and almost twice as
wide as the striz, the first much narrower as usual. Length (o’ 9)
1.8-2.25 mm.; width 0.78-1.0 mm. Illinois ——F. M. Webster.
curtulatus n. sp.
4—Body small, rather narrowly suboval, the elytra inflated and the
prothorax narrow; color almost black; squamules of the upper
surface yellowish, slender and uniform on the pronotum, not more
distinct laterally and barely so along the median line, whiter and
coarser on the elytra, which are obscure rufous in color, almost
uniformly distributed but forming not more than two irregular
lines on each interval; beak in the female moderate in thickness and
curvature, slightly longer than the head and prothorax, the antenne
inserted far behind the middle; prothorax a fifth wider than long,
the sides moderately converging, nearly straight, becoming broadly,
feebly arcuate anteriorly; apex barely more than half as wide as
the base; punctures dense; elytra ovoidal, rather pointed at apex,
the individual apices narrowly rounded as usual in the genus;
strie deep, moderate; intervals subequal, twice as wide as the
striz, excepting the very narrow first interval. Length (9) 1.8
mm.; width 0.7 mm. Indiana. Levette collection.
angusticollis n. sp.
5—Pronotum densely but subevenly punctate................-.-05- 6
Pronotum with the punctures more or less confluent, forming coarse
broken longitadinalyrugcetcp ide oe ic echt st eee ee 9
6—Pale scales of the elytra dense through most of intervals two and
five, the pronotum with two broad and distinct vitte of more
fulvous and less conspicuous squamules. Body rhomboidal, nearly
black, the legs rufo-piceous; pale scales above yellowish and glisten-
ing; beak in the male much longer than the head and prothorax,
arcuate, the antenne inserted slightly beyond the middle and the
funicle longer than in the preceding section, the male prosternum
unarmed; prothorax nearly one-half wider than long, the sides sub-
evenly and strongly arcuate to the evident apical constriction,
becoming parallel basally; apex half as wide as the base; elytra
BARIN 439
with narrow apex and unusually oblique sides, which are broadly
arcuate, at the obtuse humeri distinctly wider than the prothorax;
intervals subequal and twice as wide as the striz, with generally
well spaced punctures, the first narrower; abdomen feebly impressed
and with finer and sparser squamules medio-basally. Length (co)
2.2 mm.; width 1.0 mm. Mexico (Teapa, in Tabasco). [Gereus
veri ir t BM riche) Ronee Oe LI | ee RS *mendax Chmp.
Pale scales not forming distinct vitte on the elytra, the pronotum never
GUPLOMMVAULELA TOR isch hs SU Ue le x ifa'g bale Panis were 7
7—Squamules of the elytra long, slender, yellowish and forming a single
series on each strial interval, slightly coarser and denser on the second
interval anteriorly, and, on the fourth, in a short line near apical
third. Body more narrowly rhomboid-oval, obscure rufous through-
out; beak shorter and thicker than usual, evenly arcuate, much
longer than the head and prothorax, the antenne inserted at three-
fifths (co) or slightly beyond the middle (92); prothorax short,
two-fifths to one-half wider than long, coarsely, not very densely
punctate, the converging sides broadly arcuate to the constricted
apex, which is much more than half as wide as the base; elytra
triangular, with arcuate sides and narrowly rounded apex, slightly
wider than the prothorax and much more than twice as long, the
strie groove-like; intervals subequal, except the narrower first,
and not quite twice as wide as the grooyes, remotely and not coarsely
punctate; male with a feeble and more sparsely and finely squamu-
lose medio-basal impression, the prosternum with an extremely
short, scarcely more than tuberculiform spine before each coxa.
Length (o 9) 1.8-2.0 mm.; width 0.8-0.9 mm. Mexico (Teapa,
PORE ee Seen LES oie WERSart, dedi 2 tate dt stele *uniseriatus n. sp.
Squamules of the elytra much more abundant, conspicuous........... 8
8—Color black above, the legs and antennz more or less rufous or piceous;
squamules above subevenly close-set throughout and almost equally
wide on the pronotum and elytra, though coarser and more distinct
toward the thoracic sides and medially toward base, yellowish and
rather lustrous, forming about two close-set irregular series on each
strial interval, whitish and more or less dense beneath; scutellum
with a few squamules; beak in the male rather slender, smooth,
arcuate, longer than the head and prothorax, the antenne inserted
at three-fifths; prothorax a third wider than long, the sides slightly
converging and nearly straight, rounding in apical two-fifths, the
apex feebly subtubulate and barely more than half as wide as the
base, the basal lobe prominent, a fourth the total width; elytra
fully a third longer than wide, slightly wider than the prothorax and
somewhat more than twice as long, the sides oblique, evenly and
broadly arcuate throughout, the apex narrowly rounded; striz not
coarse; intervals rather more than twice as wide as the striz, the
punctures small, rather confused but not dense; male with feeble
medio-basal abdominal impression, the prosternum not armed.
Length (oc) 1.9 mm.; width 0.78 mm. Mexico (Vera Cruz).
“lucifer n. ‘sp.
Color similar, the squamules above also nearly similar in color and lustre,
440
MEMOIRS ON THE COLEOPTERA
similarly distributed on the pronotum, but, on the elytra, they are
not uniformly well separated as in lucifer, but dense on the second
interval, and with the intervals alternating more noticeably in
abundance of the scales; beak in the male a little shorter and
thicker, more strongly sculptured and only about as long as the head
and prothorax, the antenne similarly inserted; prothorax somewhat
larger, nearly one-half wider than long, the sides more strongly
rounding anteriorly; apex more than half as wide as the base, the
basal lobe smaller; punctures similarly strong and dense; scutellum
with very few more slender and sparse, almost hair-like squamules;
elytra almost similarin form but broader, only a little wider than the
prothorax and twice as long, the striz rather coarser, the intervals
more alternating in width; male with nearly similar abdominal and
prosternal characters, the usual spines wanting. Length (oc) 2.0
mm.; width o.g mm. Mexico (Teapa, in Tabasco). One example,
received trom (Vir, Ghanipion:: -o2 seen sa eee *tabascanus n. sp.
Color obscure rufous throughout; form somewhat narrowly subrhomboid-
oval, convex, rather shining, the squamules of the upper surface
slender but very distinct, slightly yellowish on the pronotum and
narrowly denser along the median line basally, pure white on the
elytra and arranged, without denser regions, in one or two series
on the strial intervals, whitish but rather sparse and linear on the
under surface; beak in the male slender, evenly arcuate, bright
rufous, a little less than half as long as the body, the antennz inserted
just visibly behind the middle, slender; prothorax a fourth wider
than long, the sides feebly converging and nearly straight, rather
abruptly rounding near apical third to the constricted apex, which
is much more than half as wide as the base, the basal lobe small,
abruptly subtriangular; punctures deep, relatively coarse and very
dense; scutellum small, parallel, with three or four very minute
hair-like squamules; elytra two-fifths longer than wide, a little
wider than the prothorax and twice as long; sides oblique and
evenly, somewhat strongly arcuate throughout, the apex narrowly
rounded; stri# moderate; intervals twice as wide as the strie or a
little less, somewhat finely and sparsely punctate; male with the
abdomen narrowly subimpressed or flattened and more sparsely
clothed with more slender squamules medio-basally, the prosternum
not at all armed. Length (co) 1.78 mm.; widtho.75 mm. Missis-
Sippr (Vicksburg) Os. Vidoi ones vaee te eee tee eee scutellinus n. sp.
g—Form rhomboid-oval, convex, piceous, the legs and beak rufous;
squamules above linear, pale yellowish and lustrous, replaced at
each side of the dense medial line of the pronotum—broadly basally,
narrowly toward apex—by smaller and more slender dark squamules,
on the elytra larger, elongate and conspicuous, widely spaced in
single lines on some of the intervals, but, on the second, denser in
uneven double line basally and in dense single line apically, on the
fourth dense except basally and apically, and, on the sixth, dense
basally; beak in the female strongly, evenly arcuate, rather short,
barely longer than the head and prothorax, distinctly tapering from
base to apex, the antenne inserted barely at all behind the middle;
BARINZ 441
prothorax nearly one-half wider than long, the sides converging and
evenly, distinctly arcuate to the feeble constriction; sculpture coarse;
basal lobe small; scutellum subquadrate, with six or eight slender
squamules; elytra broad, with very oblique, evenly arcuate sides
and narrowly rounded apex, a fourth longer than wide, slightly
wider than the prothorax and more than twice as long; striz moder-
ate; intervals alternating slightly. Length (2) 2.35 mm.; width
1.15 mm ». Mexico (VeracCruz) i523 isis kin 2) cael *rugicollis n. sp.
In my series of helvinus, there are several specimens which seem-
ingly indicate that some subspecific forms are now confused with
the typical species from Indiana, but I have neither time nor material
at present to more than allude to this; it was the slightly greater
concentration of scales on some of the strial intervals, that misled
me, however, into the statement that alternatus and helvinus are
subspecifically related; this is so far from being the case in reality,
that attention should now be drawn to the fact of there being no
close affinity whatever between these two species, the prothorax of
alternatus—much broader and larger, with more arcuate sides and
narrower apex—would alone prove them to be distinct; alternatus
is the largest species of the genus known to me at present.
An examination of the mandibles shows that mendax, described
under the genus Gereus by Mr. Champion, and kindly sent me by
the author, comes truly under typical Centrinopus.
The specimens of uniseriatus described above, were sent to me
by Mr. Champion under the name Gereus simulator Chmp., but
uniseriatus is much smaller and has very sparse elytral squamules,
for the greater part in single lines.
Centrinites Csy.
The slightly decussate and internally bidentate mandibles and
peculiar strigilate sculpture of the prothorax, distinguish this
genus from others more or less allied, as for example the much
smaller and more abbreviated Centrinopus. A number of Mexican
and Central American species have been described by Mr. Champion,
and the following is allied to strigicollis but very much smaller: -
Centrinites egenus n. sp.—Elongate-oval, much smaller and narrower
than strigicollis, piceo-rufous in color and feebly shining; squamules of
the pronotum small, dark and indistinct but pale and evident in a sub-
lateral vitta and very narrowly along the median line toward base, on
the elytra narrow, elongate, very sparse, almost uniform, inconspicuous
442 MEMOIRS ON THE COLEOPTERA
and not paler and denser on parts of certain strial intervals as they are in
strigicollis, the white scales beneath separated, but dense along the sides
of the body; beak nearly similar in the sexes, moderately arcuate, longer
than the head and prothorax, subcylindric and coarsely punctate, the
antenne inserted well beyond the middle (co), barely less apical (9 );
prothorax two-fifths wider than long, the sides converging and nearly
straight, rounding in apical two-fifths to the pronounced constriction;
sculpture longitudinally vermicularly rugulose; scutellum small, nude;
elytra three-sevenths (o’) to a third (92) longer than wide, ovulate,
slightly wider than the prothorax and between two and three times as
long, striz abrupt, deep, not very coarse; intervals distantly and sub-
rugulosely punctate, twice as wide as the grooves; male with the abdomen
feebly impressed and more sparsely squamulose medio-basally, the
prosternum not armed. Length (o' 2) 2.3-2.6 mm.; width 0.9-1.1 mm.
Missouri. Two examples.
Differs from strigicollis as above stated, but especially in the
sparse and subuniform, slender elongate squamules of the strial
intervals; the strigilation of the pronotum seems to be coarser in
the female than in the male, where it is even finer and feebler than
in strigicollis. The female is stouter and relatively more abbreviated
than the male in both species.
Pseudogereus Chmp.
The following species seems to belong to this genus, but is widely
different from macropterus, its type, as described from Guerrero
specimens. The mandibles are small, somewhat decussate, forming
a triangle when closed, and each has a small internal tooth:
*Pseudogereus championi n. sp.—Elongate-oval, convex, deep black
throughout and shining through the sparse vestiture, which is yellowish-
white above, the squamules long, slender, almost evenly and sparsely
distributed on the pronotum and sparsely and evenly arranged in single
or double lines along the strial intervals, without admixed darker scales
at any point; under surface with coarsely linear, rather sparse white
scales throughout; beak in the female squamulose, evenly and moder-
ately arcuate, thick, feebly tapering, coarsely sculptured and barely as
long as the head and prothorax, the antenne inserted at three-fifths, the
club rather small, broadly oval, with its first joint fully half the mass;
prothorax as long as wide, the sides broadly, subevenly arcuate to the
strong apical constriction, becoming subparallel basally, the tubulate
apex less than half as wide as the base, the median lobe almost obsolete;
sculpture consisting of longitudinal vermiform ruge, without trace of
any kind of punctures, the smooth median line distinct and entire;
scutellum quadrate, sparsely and finely squamulose; elytra nearly twice
as long as wide, the sides gradually converging, broadly, evenly arcuate
from the moderate humeral swellings to the evenly rounded apex, wider
BARIN4E 443
than the prothorax and much more than twice as long; grooves deep,
moderate; intervals three times as wide as the grooves, rather finely,
sparsely, confusedly and subrugulosely punctate. Length (2) 4.8 mm.;
width 1.8 mm. Mexico (Milpas in Durango).
One example was sent to me by Mr. Champion under the name
Pseudogereus macropterus Chmp., but there must certainly have
been some oversight. In that species the pronotum is densely and
finely punctate, and the upper surface is clothed with whitish and
brownish scales condensed in vitte on the pronotum and elytra;
the figure of macropterus, on the plate, bears no resemblance what-
ever to the species here described, which I take pleasure in dedicating
to Mr. Champion.
Pseudocentrinus Chmp.
The following species differs very much from ochraceus in the
large and perfectly uniform dense ferruginous scales clothing the
upper surface; the mandibles are almost exactly as in Centrinus,
they coming together on a straight line, their inner margins wholly
unmodified; the anterior cox are narrowly separated:
*Pseudocentrinus uniformis n. sp—Elongate, rhomboidal, moderately
convex above, deep black throughout the body, legs and beak, the integu-
ments shining where accidentally exposed; upper surface densely and
equally clothed throughout with very broadly sublineate scales, broader
on the elytra than on the pronotum, the scutellum less densely squamose;
under surface with large and dense, pale yellowish scales; beak in the
female long, slender, smooth, punctured and squamulose at base, barely
tapering, evenly and moderately arcuate and fully half as long as the
body, the antennz inserted just beyond the middle; prothorax conical,
about as long as wide, the evenly converging sides very feebly arcuate;
apex barely at all constricted, feebly arcuate and less than half as wide
as the base; punctures rather coarse, dense and more or less confluent,
the median line concealed; elytra four-sevenths longer than wide, at the
distinctly prominent humeri much wider than the prothorax, scarcely
more than twice as long, the moderately oblique sides feebly and evenly
arcuate, the apex rather broadly, circularly rounded; subapical umbones
distinct; grooves fine, indicated by parting of the dense vestiture, the
intervals where exposed coarsely, rugosely sculptured, at least four times
as wide as the grooves; last abdominal segment in the female trans-
versely tumid basally, the surface thence rapidly ascending to the com-
pletely concealed pygidium. Length (2) 6.2 mm.; width 2.8 mm.
Guatemala (Amatitlan,—3000 feet elev.). One example.
In this genus the pygidium is said to be large, vertical and fully
exposed in the male, but wholly covered in the female, which would
444 MEMOIRS ON THE COLEOPTERA
seem to ally it with Centrinogyna, but the body in the latter genus
is more parallel and less rhombiform, among other differences.
Nicentrus Csy.
This genus is distinguished from Centrinaspis primarily by the
elongate cylindrical form of the body. The mandibles close along
their inner edge almost similarly, but their external outline is more
rounded, and, along the inner edge, there is nearly always some
crenulation. The prosternum is never armed in the male. The
species are very numerous, those in my collection at present being
definable as follows:
Prothorax inflated, rounded at the sides and fully as wide as the elytra.
Body larger than in any other species, rather stout, convex, piceous-
black, the legs rufous; squamules,of the upper surface yellowish,
slender, uniform and not dense on the prothorax, and closer, con-
spicuous and in two to three series on the strial intervals; under
surface with white scales, dense along the sides; beak stout, espe-
cially in the male, feebly arcuate, about as long as the head and
prothorax, the antenne inserted near three-fifths (co") or just beyond
the middle (2); prothorax a fourth (0) to two-fifths (@) wider
than long, arcuately narrowing before the middle, coarsely, rugosely
and densely punctate but shining; elytra two-thirds longer than the
prothorax, the very moderately oblique sides broadly arcuate, the
apex somewhat obtusely rounded; strie deep, abrupt, moderately
coarse, the intervals flat, somewhat finely, loosely and confusedly
punctate. Length (o&' 2) 3.8-4.7 mm.; width 1.65-2.0 mm.
Florida (Haw Creek) (es eee eo ee grossulus Csy.
Prothorax not inflated, always at least somewhat narrower than the
CUTE eS race Ws: Gus ce pe thas ati ote ped HS dane lens OR a Reo 2
2—Body parallel, subevenly clothed above, the size rather large; pro-
thorax barely visibly narrower than the elytra. Piceous-black, the
beak black, the legs rufous; squamules above slender, not close-set
and yellowish, fine on the pronotum, coarser, conspicuous and in
two or three irregular lines on the strial intervals; under surface
with white scales, generally narrowly separated; beak in the female
slightly arcuate, smooth, somewhat thickened, bent and squamulose
at base; antennz inserted just beyond the middle; prothorax three-
sevenths wider than long, the sides parallel, feebly arcuate, rounding
in about anterior half, the apex feebly subtubulate and half as wide
as the base; punctures rather small, moderately close, the sculpture
faintly ruguliform longitudinally, very much finer than in grossulus;
smooth median line distinct centrally; scutellum albido-squamose,
quadrate; elytra four-fifths longer than the prothorax, the feebly
oblique sides broadly and distinctly arcuate, the apex evenly, not
broadly rounded; humeral swellings very feeble; striz abrupt,
BARIN 445
deep; intervals flat, finely, loosely and confusedly punctate. Length
(2) 3.8 mm.; width 1.4 mm. Florida (locality unrecorded).
parallelus n. sp.
Body nearly as in parallelus but a little smaller, deep black, with rufous
legs; squamules above white and slender, not much more distinct
toward the pronotal sides, conspicuous and in two uneven series on
the strial intervals, the scutellum not transverse, densely albido-
squamose; under surface with dense white scales; beak not quite
as long as the head and prothorax, arcuate, more slender and less
strongly sculptured in the female; antenne inserted at four-sevenths
(2) or three-fifths (o"); prothorax not a third wider than long, the
sides parallel and arcuate, more rounding before the middle; punc-
tures moderate, dense and partially coalescent; elytra fully two-
thirds longer and barely wider than the prothorax, elongate-para-
bolic, with very feeble humeri; grooves deep and rather coarse;
intervals flat, finely, loosely and confusedly punctate; male with
the abdomen narrowly and feebly impressed and a little less squam-
ose medio-basally. Length (o' @) 2.7-3.6 mm.; width 1.15~-1.4
mm. Florida (Haw Creek). Three specimens...... decipiens Lec.
Body very short and broadly oblong-oval, convex; color deep black, the
surface somewhat alutaceous throughout, the legs not paler; vesti-
ture above white, fine and sparse on the pronotum but more distinct
toward the sides, coarse and dense on the transverse scutellum and
adjacent thoracic lobe, distinct in about two irregular lines on each
strial interval; beak in the female unusually long, smooth, arcuate,
as long as the elytra, the antenne barely beyond the middle; pro-
thorax fully one-half wider than long, the evenly and strongly
arcuate sides becoming parallel at base, the apex faintly subtubulate,
half as wide as the base; punctures very moderate and not dense,
the smooth median line visible in part; elytra short, but little longer
than wide, three-fifths longer than the prothorax and but very
little wider, parabolic, the striae deep and unusually coarse; man-
dibles differing somewhat from the typical, being more gradually
narrowed, straighter externally, the inner edge with a minute denticle
near the base. Length (9) 3.3 mm.; width 1.5 mm. Florida
OSES T ON ae ee contractus Csy.
Body broad, subrhomboid-oval, only moderately convex above, deep
black, the tarsi piceous; linear squamules of the upper surface
white, dense along the pronotal apex and in an abrupt lateral vitta,
also in a large medio-basal spot, elsewhere almost wanting; on the
elytra they are dense, except along the suture, broadly toward base
and surrounding the rounded and densely squamose scutellum,
also nearly wanting broadly along the sides; under surface strongly
convex and densely albido-squamose; beak in the female cylindric,
feebly arcuate, sparsely punctulate, longer than the head and pro-
thorax, the slender antennz inserted at four-sevenths; prothorax
nearly one-half wider than long, the sides slightly converging and
evenly, just visibly arcuate nearly to the apex, there rapidly round-
ing inward, the apex scarcely at all constricted and more than half
as wide as the base; punctures coarse, deep and very dense but well
446 MEMOIRS ON THE COLEOPTERA
defined; elytra obtusely parabolic, with large but moderate humeral
swellings, distinctly wider than the prothorax and about twice as
long; strize deep, moderately coarse; interstitial punctures some-
what strong where exposed. Length (9) 4.15 mm.; width 1.7
mm. Mexico (Sierra Madre Mts., Chihuahua),—C. H. T. Town-
SONU. b26! C7 Fl Ee iLL a eee penne ae eee *townsendi n. sp.
Body narrower, elongate, suboval or parallel, the prothorax always
evidently narrower than the elytras. © fenhe al ae eee 3
3—Punctures of the elytral striae strong, deep and shining, producing a
catenulate effect but not at all crenate. Body narrowly elongate-
oval, convex, black and subalutaceous, the under surface, beak
distally, and the legs, rufescent; squamules above fine, whitish,
very even and sparse on the pronotum, more distinct and forming
even single interstitial lines on the elytra; scutellum small, narrow,
emarginate, having only two or three minute slender squamules;
white scales beneath more or less separated; beak in the female
short, smooth, feebly arcuate, not as long as the prothorax, the
antenne shorter than usual but of the same general type, inserted
near four-sevenths; mandibles forming a very obtuse ogive when
closed, strongly crenate within; prothorax barely wider than long,
the sides feebly converging, moderately and subevenly arcuate
from base to the wholly unconstricted apex, which is rather more
than half as wide as the base; punctures strong, even and somewhat
close-set; elytra parallel basally, oval in apical half, with the humeral
swelling feeble, slightly wider than the prothorax and twice as long,
strie deep, abrupt; intervals not quite twice as wide as the strie,
the punctures fine, not close and uniseriate. Length (9) 2.8 mm.;
width 0.9 mm. Brazil (Para),—Baker.....*striatopunctatus n. sp.
-Punctures of the striz normal, never very conspicuous...............
4—Thoracic punctures generally more or less coarse, always clearly
defined and separated among themselves....................0-. 5
Thoracic punctures clearly defined but relatively fine and notably dense;
body smiallinsize: fo) 2 Se, Se aie apa enatites Spe mae 15
Thoracic punctures in great or entire part confluent, forming long sub-
sinuous longitudinal russe). #oV2) Mate Cee eee 16
5—Vestiture of the pronotum uneven, the squamules small, dark and
inconspicuous, but becoming pale and more distinct along the
median line and abruptly rather broadly toward the sides........ 6
Vestiture subuniform throughout the pronotum, sometimes gradually
somewhat more evident toward the sides though never abruptly
and never condensed along the median line.................... II
6—Elytra notably elongate, about four-fifths longer than wide. Body
narrow, black throughout; squamules above brownish-white, the
three vitte distinct on the pronotum; strial intervals each with
about two irregular close-set series, the scutellum small, densely
white; scales beneath white, for the most part narrowly separated,
denser on the met-episterna; beak in the male thick, feebly arcuate,
as long as the head and prothorax, dull and closely sculptured, the
antenne inserted near three-fifths; prothorax as long as wide, the
sides barely visibly convergent and very nearly straight, gradually
BARIN 447
feebly rounding in apical third, the apex very faintly constricted
and much more than half as wide as the base, the basal lobe distinct;
punctures relatively rather coarse and separated by half their own
diameters; elytra with feebly oblique and broadly, evenly arcuate
sides and rather obtusely rounded apex, at the moderate humeral
swellings fully a fifth wider than the prothorax, evidently more than
twice as long, the strie coarse, the sparsely punctate intervals
nowhere more than twice as wide as the grooves; male with the
abdomen distinctly, longitudinally impressed and less squamose
medio-basally. Length (o’) 2.7 mm.; width 1.15 mm. Guatemala
(near the city,—elev. 6500 ft.).....-..-.++++08: *trilineatus n. sp.
Elytra much less elongate, never more than one-half longer than wide
and generally less, subparabolic in outline........-+++-+++2++5-- |
7—Size much larger; north temperate in habitat. Body rather broadly
subrhomboid-oval, feebly shining, black, the legs faintly rufescent;
small squamules of the dark and clearly defined pronotal vitte
barely observable; whitish squamules of the strial intervals distinct
and in two irregular lines, becoming a single line on the three or four
sublateral intervals; whitish scales beneath dense; beak in the
female feebly arcuate, nearly smooth, rapidly bent and more punc-
tate basally and not quite as long as the head and prothorax, the
antenne at four-sevenths; prothorax large, a third wider than long,
the sides slightly converging and broadly arcuate, becoming grad-
ually more rounded apically, the apex much less than half as wide
as the base; punctures moderate, separated by nearly their own
diameters, the smooth median line distinct and entire; scutellum
quadrate, densely squamose; elytra only a little wider than the
prothorax and three-fourths longer; striz coarse; intervals between
once and twice as wide as the grooves. Length (9) 3.8 mm.; width
1.6mm, Illinois (southern). ..... 2.2. 2... ee ees ingenuus Csy.
Size smaller, the outline less stout; habitat tropical ictal + « 8
8—Prothorax broader, more narrowed apically, the apex half as wide
ag the pase. in! both Sexes... occ. 5 s/s. 2. Oe arb ales ei sible earns adele als o> 9
Prothorax narrower, less narrowed from base to apex, the latter distinctly
more than half as wide as the base... .......-- eee eee errr rece 10
9—Body suboblong-oval, convex, rather shining, black, the legs rufous;
squamules above yellowish in the three distinct pale vitte of the
pronotum, whiter and in one or sometimes two lines on the strial
intervals, the scutellum conspicuously white; scales beneath white
and dense; beak feebly arcuate, as long as the head and prothorax
(2), a little shorter and thicker (o”), sculptured in both sexes, the
antenne at three-fifths (co) or only a little less apical (2); pro-
thorax but little wider than long, the sides feebly converging and
nearly straight, gradually rounding from a slight distance before
the middle; apex completely unconstricted; punctures moderately
coarse, separated by fully half their diameters, the smooth median
line narrow, entire; basal lobe very moderate; elytra at the moder-
ately prominent humeri not quite a fifth wider than the prothorax,
three-fourths longer, circularly rounded at tip; striae moderate but
deep; intervals sparsely punctulate, from two to three times as
448
MEMOIRS ON THE COLEOPTERA
wide as the strie; male with the abdomen very faintly impressed
and scarcely less squamose medio-basally. Length (co 9) 2.8-
3.0 mm.; width 1.15-1.2 mm. Mexico (Vera Cruz). Three
examples: i. ian sei ede wan ee ee ee *ovulatus n. sp.
Body less broadly oval and more subrhombic, convex, shining, black, the
legs obscure rufous, the squamules above whitish throughout, the
lateral pale pronotal vitte rather well defined, the median usually
loose and not so well defined; strial intervals for the most part with
single lines of slender squamules, the scutellum small, densely
clothed; white scales below dense; beak (co) thick, evenly arcuate,
strongly sculptured and not quite as long as the head and prothorax,
or (2) distinctly more slender, only a little longer, less sculptured
and feebly arcuate, but more rapidly arcuate and thickened at base;
antenne at three-fifths (co), or just beyond the middle (9); pro-
thorax a sixth wider than long, the sides broadly arcuate and con-
verging in about apical half, more parallel and very feebly arcuate
posteriad; apex very faintly constricted; punctures smaller and
sparser than in the preceding, separated by nearly twice their
diameters (@ ), or by their diameters (o”), being sensibly coarser in
the male; elytra longer, narrower and more gradually and recti-
linearly attenuated than in ovulatus, rounded at tip, at the rather
prominent humeri distinctly wider than the prothorax, not quite
twice as long, the strie deep and abrupt; intervals about twice as
wide as the strie; male sexual characters nearly as in the preceding.
Length (oc! 2) 2.7-2.8 mm.; width 1.1-1.15 mm. Costa Rica
(Cachi),—Biolley. Two specimens. [WN. lineicollis Chmp., nec
Boli—spars) Shih. tenis is Wh oe ao a eee eee *ordinatus n. sp.
1o—Form narrow, elongate-oval and convex, shining, black, the legs
rufous; ffsquamules above whitish, the three pronotal lines very
*loose and indistinct; scutellum and basal thoracic lobe densely
albido-pubescent; strial intervals each with a single line of long and
slender white squamules; scales beneath white, dense; beak in the
male thick and heavy, evenly cylindric and evenly arcuate, as long
as the head and prothorax, strongly sculptured, the antenne rather
behind three-fifths; prothorax as long as wide, the sides just visibly
converging and nearly straight, gradually feebly arcuate in nearly
apical half, the apex unconstricted; punctures small but deep,
separated by twice their diameters; elytra shorter than in ordinatus,
the sides much less oblique and the apex more obtusely rounded, a
little wider than the prothorax and three-fourths longer; striz
moderate, rather less than half as wide as the intervals; male with
the abdomen feebly impressed and more scantily squamose medio-
basally. Length () 2.3 mm.; width 0.9 mm. Costa Rica
(Cachi),—Biolley. One example.............. *convexulus n. sp.
Form very narrowly elongate-oval and convex, shining, black, the legs
bright rufous; squamules above whitish, the three lines of the
pronotum loose and not very definite in the type; scutellum and
basal thoracic lobe closely squamose; strial intervals each with a
single thin line of scales; under surface with the usual dense white
scales; beak in the female thick, cylindric, moderately and evenly
BARINZ 449
arcuate, as long as the head and prothorax and strongly sculptured,
the antenne at four-sevenths; prothorax as long as wide, the sides
parallel and straight, broadly rounding before the middle to the
unconstricted apex; punctures deep and strong, moderately coarse,
separated by their own diameters; elytra narrowly oval, at the
moderate humeral swellings evidently wider than the prothorax,
about three-fourths longer; apex rather obtusely though circularly
rounded; strial grooves deep and sharply defined, the intervals each
with a single series of well separated and moderate punctures, twice
as wide as the grooves or less. Length (2) 2.3 mm.; width 1.18
Min. Meco, GV era ere) sro Boo ee aks PO Bal *rubripes n. sp.
11—Species moderate in size and of the northern temperate regions.. . 12
Species very small, inhabiting the tropics... .. 5.0.00... ..ecceeneee 14
12—Prothorax with the sides rapidly rounding in scarcely more than
apical fourth. Body narrowly suboval, black, somewhat shining,
the legs obscure rufous; squamules above narrow and whitish,
distinct, not dense, less evident on the median parts of the pronotum,
generally in a single line on the strial intervals, though irregularly
double on two or three; white scales dense beneath; beak in the
male thick, cylindric, evenly and moderately arcuate and fully as
long as the head and prothorax, deeply, not closely sculptured, the
antenne at four-sevenths; prothorax a fifth wider than long, the
sides very feebly arcuate, rounded at apex, which is more than half
as wide as the base; punctures moderate, not dense but irregular,
the smooth line subentire; scutellum quadrate and densely albido-
squamose; elytra nearly one-half longer than wide, three-fourths
longer than the prothorax and slightly wider, the sides moderately
oblique and subparabolically rounded; striae moderate; intervals
flat, strongly punctured and of unequal widths; male with a but
little less squamose medio-basal impression. Length (o”) 3.3 mm.;
width 1.3 mm. Jowa (Hamburg),—Soltau........simulans n. sp.
Prothorax with the sides gradually rounding and converging in fully
SEL STS Bee ey an RGe Baise meyer e ways! 13
13—Body elongate, subrhomboid-oval, rather convex and dullish black,
the legs obscure rufous; whitish squamules of the upper surface
nearly as in the preceding but more conspicuous, similarly arranged
on the pronotum and scutellum, dense and white below; beak (o")
feebly arcuate, dull and strongly sculptured, slightly thickened at
base, or (2) nearly similar but more slender, about as long as the
head and prothorax in both sexes, the antenne at three-fifths (co)
or four-sevenths (9); prothorax a fourth (2) toa sixth (co) wider
than long, the sides becoming parallel in about basal half; punctures
rather coarse and close-set; median smooth line narrow, entire;
elytra nearly one-half (co) to two-fifths (2) longer than wide,
elongate-parabolic, the apex somewhat obtusely rounded, at the
rather prominent humeri distinctly wider than the prothorax, three-
fourths longer; striea moderate, one-half as wide as the intervals or
much more; interstitial punctures small, not dense; male with a
T. L. Casey, Mem. Col. IX, Feb. 1920.
450 MEMOIRS ON THE COLEOPTERA
very feeble and scarcely less squamose medio-basal impression.
Length (co 9) 3.5-3.6 mm.; width 1.5 mm. Colorado (Holly).
montanus n. sp.
Body nearly similar but stouter and with relatively larger prothorax,
almost similar in coloration and vestiture; beak in the male similar
but a trifle stouter and more coarsely, deeply sulcate at the sides,
as long as the head and prothorax; antenne inserted just behind
apical third; prothorax a fourth wider than long, the broadly
rounded sides becoming parallel more basally; apex similarly un-
constricted and about half as wide as the base; basal lobe relatively
smaller; punctures rather coarse, clearly but narrowly and un-
equally separated, the smooth median line even and entire; elytra
similar in form and parabolic, but shorter, only two-fifths longer
than wide in the male and much less conspicuously broader than
the prothorax, not quite three-fourths longer; striz rather coarse,
similar but with the punctures along the bottom much more distinct;
intervals of different widths, flat, with single, the second, third and
fifth with irregularly double, lines, of distinct elongate squamules;
male abdomen nearly similar. Length (co) 3.6-3.8 mm.; width
1.6-1.75 mm. Jowa (Riverton) and Texas......... vacunalis n. sp.
14—Form narrow, subparallel, convex, rather shining, black, the femora
feebly rufescent; squamules of the upper surface small, grayish, very
slender, sparse and rather inconspicuous, very uniform in distri-
bution on the pronotum, forming single or partially double lines on
the elytra, the scutellum and basal thoracic lobe densely albido-
squamose; white squamules of the under surface parallel-sided and
more or less distinctly separated; beak in the male evenly, moder-
ately arcuate, rather thick, cylindric and dull, somewhat strongly
sculptured as usual, the antenne at about three-fifths; prothorax
about as long as wide, the sides feebly converging and nearly straight,
gently rounding in about apical third, the apex unconstricted and
much more than half as wide as the base; punctures coarse, narrowly
separated, the smooth line narrow and not well defined; elytra not
quite one-half longer. than wide, at the feebly prominent humeri
distinctly wider than the prothorax, twice as long, the sides parallel
and nearly straight, parabolically rounding in apical third; strie
moderate; intervals sparsely punctulate and fully twice as wide as
the strie; male abdomen broadly, feebly impressed basally. Length
(o') 2.2 mm.; width 0.75 mm. Guatemala (locality unrecorded).
*cylindricollis n. sp.
Form more dilated, less parallel, moderately convex, black, the legs
bright rufous; squamules above slender and rather sparse but
whitish, glistening and distinct, somewhat aggregated along the
sides of the pronotum and loosely so on the basal lobe, elsewhere
indistinct; on the elytra they form single interstitial lines, which
are conspicuous; scutellum small, densely albido-squamose; white
scales beneath narrowly separated; beak in the male feebly arcuate,
rather thick, strongly sculptured and not quite as long as the head
and prothorax, the antenne at four-sevenths; prothorax very slightly
wider than long, the sides subparallel and nearly straight in about
BARIN-E 451
basal, gradually arcuate and converging in apical, half; apex un-
constricted, rather more than half as wide as the base; punctures
coarse, close though narrowly separated, the smooth line distinct
except toward apex and base; elytra two-fifths longer than wide,
rapidly parabolic, with arcuate sides and rather narrow apex, at the
somewhat prominent humeri distinctly wider than the prothorax,
two-thirds longer; stria moderate; intervals with single series of
distinct punctures and twice as wide as the strie; male abdomen
with feeble and less squamose medio-basal impression. Length (co)
2.6 mm.; width 1.1mm. Brazil (Para),—Baker...*parensis n. sp.
15—Body oblong-suboval and moderately convex, black, the legs red;
squamules above whitish, slender and well separated but rather
closer in outer fourth on the pronotum, in single to double lines on
the elytra; scutellum and thoracic lobe densely albido-squamose;
white parallel scales beneath distinctly separated; beak in the female
slightly arcuate, subcylindric, nearly smooth, except basally, and as
long as the head and prothorax, the antenne at about the middle;
prothorax a fourth wider than long, the sides parallel and nearly
straight in almost three-fifths, then rounding gradually to the un-
constricted apex, which is somewhat more than half as wide as the
base; punctures close, partially subconfluent; smooth line narrow;
elytra not quite one-half longer than wide, evenly and gradually
parabolic, at the feeble humeri only very slightly wider than the
prothorax, twice as long; striz moderate, though fully half as wide
as the finely and remotely punctate flat intervals. Length (9)
2.2 mm.; width 0.75 mm. Florida (Haw Creek).....effetus Csy.
Body narrowly elongate-suboval, convex, dull in lustre, black, the legs
not paler; squamules above rather narrow, whitish, well separated
and very evenly distributed, equally distinct throughout; they
form loose double lines on most of the strial intervals; scutellum
and thoracic lobe densely albido-squamose; white parallel scales
beneath very even and narrowly separated; beak in the female
straight and smooth, becoming arcuate and more sculptured, though
but little thicker, in nearly basal half, somewhat longer than the
head and prothorax; antenne at the middle; prothorax a fifth
wider than long, the sides feebly converging and not distinctly
arcuate, becoming gently and gradually rounded anteriorly, the
unconstricted apex three-fifths as wide as the base; punctures very
even, narrowly separated, the smooth line indistinct; elytra long,
two-thirds longer than wide, the sides feebly oblique and barely
arcuate, gradually more so posteriorly and evenly rounded at apex,
at the very moderate humeral swellings distinctly wider than the
prothorax, two and one-half times as long; grooves abrupt; intervals
with small but numerous confused punctures and from two to nearly
three times as wide as the grooves. Length (9) 2.5 mm.; width
0.85 mm. Guatemala (near the city)........... *pistorinus n. sp.
16—Punctures of the pronotum rather small and dense, but forming
only short and feebly defined rugulosity. Body elongate-oval,
black, the legs deep black; elongate scales above white, close-set
and conspicuous, gradually coarser and rather closer toward the
452 MEMOIRS ON THE COLEOPTERA
sides of the pronotum and forming irregularly double lines on the
strial intervals, the scutellum and thoracic lobe densely albido-
squamose; under surface with dense white scales; beak in the male
feebly, evenly arcuate, thick, strongly sculptured and almost as
long as the head and prothorax, the antenne just behind three-
fifths; prothorax just visibly wider than long, the sides feebly
converging and subevenly, moderately arcuate, from base to the
unconstricted apex, which is half as wide as the base, becoming
gradually subparallel basally; smooth median line evident in part;
elytra nearly one-half longer than wide, parabolic, with obtusely
rounded apex, at the moderately swollen humeri distinctly wider
than the prothorax, about four-fifths longer; striz moderate;
intervals densely, coarsely and confusedly punctate and from two to
nearly three times as wide as the strie; male abdomen impressed
shallowly medio-basally though scarcely less squamose. Length
(o') 3.6mm.; width 1.4mm. Texas (New Braunfels) ,—Wickham.
texensis n. sp.
Punctures of the pronotum coarse, forming long longitudinal ruge
CMrOUe OTR AY LS kek SEA gortannne etal ee eee 7
17— heres ra Cher (COarSe lis Sap skitteioters Se. «cde tl eee) ae eee 18
ihe ruge evidently finer and closer..564)) 4.) oo oe: ee eee 19
18—Form narrow, elongate-suboval, convex, black, the tibie piceo-
rufous; squamules above distinct and white but rather sparse, a
little finer on the median parts of the pronotum, forming single and
double loose lines on the strial intervals, close and white beneath;
beak in the male rather thick, feebly arcuate, strongly sculptured
and fully as long as the head and prothorax, the antenne near three-
fifths; prothorax as long as wide, the sides moderately and evenly
arcuate from base to the unconstricted truncate apex, which is
much more than half as wide as the base; sculpture notably coarse,
somewhat confused in part; elytra elongate-parabolic, with rather
obtusely rounded apex, only slightly wider than the prothorax and
fully four-fifths longer, fully three-fifths longer than wide; strie
moderate; intervals from two to nearly three times as wide as the
striz, distinctly but loosely, confusedly punctate; male abdomen
feebly impressed medio-basally. Length (co) 2.9 mm.; width 1.0
mm) > Texass(Coluim bus) mses fase cee oo ee enee eee scitulus Csy.
Form much broader and more oblong-suboval, deep black throughout
the body and legs; squamules of the upper surface slender, glistening-
white, almost obsolete on the pronotum, except along the sides and
faintly along the feebly defined smooth median line; white scales
beneath conspicuous, though slightly separated, fine and less evident
on the propleura; beak (co) cylindric, coarsely sculptured, moder-
ately thick, evenly, feebly arcuate and as long as the head and
prothorax, the antenne near four-sevenths, or (@) a little longer,
with the antenne. nearer the middle; prothorax nearly a fourth
wider than long, the sides feebly, subevenly arcuate and convergent
to the feeble apical constriction, the apex half as wide as the base;
ruge rather well defined; scutellum and thoracic lobe closely albido-
pubescent as usual; elytra three-sevenths longer than wide, at the
BARINE 453
evident humeral swellings but slightly wider than the prothorax,
about twice as long, the sides subparallel and feebly arcuate, evenly
rounding in about apical third; striz moderate; intervals from two
to nearly three times as wide as the striez, subalutaceous, with fine
and well spaced punctures, the squamules forming a single line on
each, though double on the third and fifth; male abdomen broadly,
feebly impressed medio-basally and finely, sparsely squamulose.
Length (o' 2) 3.4-3.6 mm.; width 1.3-1.45 mm. Mexico (Sierra
Madre Mts., Chihuahua),—Townsend.......... *chihuahue n. sp.
19—Elytra longer, arcuately narrowing behind from near the humeral
protwherameess wise 2 ved sei hie oid ov vise aa nines = Feelin Sew bade 8 20
Elytra shorter and more parallel, narrowing arcuately only from behind
the middle, the intervals in every case each with a very even single
line of squamules.. ... 5... 20s e eee ee eee eee eee ee renee 23
20—Prothorax distinctly shorter than wide. Form oblong-suboval,
rather convex, only feebly shining, deep black, the legs black to
obscurely rufescent; squamules above nearly white, aggregated
loosely but in well defined lateral vitta and finer median line on the
pronotum, in single line on the strial intervals, double on the fifth
basally; very small scutellum and the thoracic lobe densely albido-
squamose; white scales of the under surface dense on the hind body,
sparse on the metasternum; beak (@) thick, cylindric, dull and
sculptured, feebly and evenly arcuate and as long as the prothorax,
with the antennze at four-sevenths, or (2) evidently thinner, with
the antenne just beyond the middle; prothorax a fourth to fifth
wider than long, the sides subparallel, feebly arcuate, more rapidly
rounding apically to the feebly constricted apex, which is more than
half as wide as the base; smooth median line uneven but entire;
elytra three-fifths longer than wide, very little wider than the pro-
thorax and twice as long, the sides evidently arcuate, only very
feebly converging from the distinct humeral swellings and with
rapidly obtuse apex; intervals with rather small and well separated
punctures, about three times as wide as the deep abrupt grooves;
male abdomen feebly impressed and with smaller and sparser
squamules medio-basally. Length (o Q) 2.6-3.3 mm.; width
0.8-1.18 mm. Massachusetts (Natick,—Frost, and from an un-
recorded locality). Four specimens.........-.--- puritanus n. sp.
Prothorax about as long as wide; trilineate with loosely aggregated fine
White squamMUlesn. << cio4 sul 6 swe bl eee eae sieie wi oF Ww viersieiate eis e+ 21
21—Body very small in size and narrow, the prothorax not evidently
constricted at apex. Elongate, suboval, scarcely shining, black, the
legs dark rufous; beak in the male rather large, thick, feebly, evenly
arcuate and strongly sculptured, longer than the head and pro-
thorax, the antenne at four-sevenths; prothorax with the feebly
arcuate sides subparallel, rounding gently near the apex, which is
distinctly more than half as wide as the base; elytra very little
wider than the prothorax and four-fifths longer, the sides almost
straight and parallel in nearly basal half, broadly and feebly arcuate
as a whole, the apex not very obtuse, the humeral swellings very
moderate; intervals about twice as wide as the strie, each with a
454
MEMOIRS ON THE COLEOPTERA
single line of squamules and moderate, uniseriate and well spaced
punctures; under surface of the hind body densely albido-squamose,
the male abdomen feebly impressed medio-basally, the impression
scarcely less squamulose than the other basal parts of the surface.
Length (o) 2.2 mm.; width 0.7 mm. District of Columbia.
pertenuis n. sp.
Body larger and stouter, the prothorax constricted and briefly subtubu-
.
laterat‘apexciyaee fs fs 60. SR SE er eae ee 22
22—Form oblong-suboval, convex, with rather prominent humeri, deep
black throughout, the legs black; pronotum abruptly though loosely
clothed with yellowish-white squamules in fully lateral fourth, also
sharply but narrowly along the median line; strial intervals each
with a single regular line of whiter squamules, somewhat irregular
on the third; hind body beneath with close white scales; beak
missing in the only specimen at hand; prothorax with the sides just
visibly converging and barely at all arcuate, abruptly rounding in
about apical fourth; elytra four-sevenths longer than wide, at the
notably though obtusely swollen humeri distinctly wider than the
prothorax, four-fifths longer; sides very feebly converging and
nearly straight, gradually rounding behind the middle, the apex
narrowly obtuse; intervals not quite twice as wide as the grooves,
each with a series of moderate though very distinct, well spaced
punctures, somewhat confused on the third; male abdomen with a
deep and subglabrous elongate medio-basalimpression. Length (co)
3.25 mm.; width 1.3 mm. Texas. [C. lineicollis Lec. nec Boh.].
lecontei Chmp.
F orm elongate, narrower, more evenly oval and rather more convex than
the preceding, similar in coloration and vestiture, except that the
loose lateral pronotal vitta of slender squamules is narrower, only a
fifth or sixth the total width, the median line not distinctly albido-
squamulose except basally, and the white squamules of the strial
intervals are indouble series on the greater part of intervals 2-4-6,
and also on some others basally, the white scales almost similarly
dense beneath; beak in the male feebly arcuate, sculptured, fully
as long as the head and prothorax and only moderately thick, the
antenne inserted very near the middle, much less apical than usual
in that sex; prothorax with the sides sensibly converging and
virtually straight to anterior fourth, there rapidly rounded to the
apical constriction, the distinctly tubulate apex half as wide as the
base; elytra more than one-half longer than wide, the sides evidently
converging and very evenly arcuate from the moderate humeral
swellings to the circularly rounded tip, slightly wider than the pro-
thorax and not quite twice as long; intervals fully twice as wide as
the strie, with small and not very distant, generally confused
punctures; male sexual characters as in the preceding. Length
(oo) 3.15 mm.; width 1.2 mm. Kentucky..... subtubulatus n. sp.
Prothorax as long as wide and more cylindric. Body subcylindric,
convex, black, with the legs feebly picescent; pale squamules above
sparsely aggregated in lateral sixth of the pronotum and on the
median line basally, more conspicuously white in single interstrial
BARINZ 455
lines, dense and white on the small scutellum; white scales of the
under surface distinctly separated; beak in the male thick, feebly
arcuate, sculptured and not quite as long as the head and prothorax,
the antenne at four-sevenths; prothorax with the sides just visibly
converging and virtually straight, gently rounding in about apical
third to the feebly constricted apex, which is much more than half
as wide as the base; elytra short, only three-sevenths longer than
wide, much wider than the prothorax and four-fifths longer, with
rather prominent but small humeral swellings, parallel and nearly
straight sides to behind the middle, then subevenly rounded through
the apex; intervals subequal, fully twice as wide as the moderate
striae, each with a series of small though distinct and well spaced
punctures; male abdomen but feebly modified. Length (07) 2.3
mm.; width 0.8 mm. Alabama (probably from near Mobile).
alabame@ n. sp.
Prothorax distinctly shorter than wide, more narrowed at apex... ...24
24—Body subcylindric, feebly shining, black, the legs obscure rufous;
squamules above throughout very nearly as in the preceding, the
lateral vitta of the pronotum a little wider, a fifth the total width:
white scales of the under surface well separated, denser on the met-
episterna; beak in the male nearly as in the preceding but much
longer, being distinctly longer than the head and prothorax and with
the antenne near three-fifths; prothorax fully a fifth wider than
long, the subparallel sides very feebly arcuate but distinctly, grad-
ually rounded in about apical fourth to the very feebly constricted
apex, the latter much more than half as wide as the base; elytra
scarcely one-half longer than wide, only a little wider than the pro-
thorax and almost twice as long, with small and feeble humeral
swellings; sides parallel and straight in three-fifths, then rounding
to the narrowly subobtuse apex; intervals twice as wide as the
moderate striz, each with a series of small but evident punctures;
male abdomen distinctly impressed and semi-nude along the middle
basally and also in the middle of the fifth segment. Length (0%)
2.8 mm.; width 1.0 mm. Kentucky (locality unrecorded).
piceipes n. sp.
Body subcylindric but less convex, deep black, with rufo-piceous legs,
slightly shining, the slender pronotal squamules as in the preceding
but even more obliterated along the median line, similarly whiter
and more conspicuous in very even single interstitial lines on the
elytra, but with the squamules more separated longitudinally, the
under surface similar; beak in the female moderately slender and
sparsely sculptured, cylindric, less arcuate distally and longer than
the head and prothorax, the antennez just visibly beyond the middle;
prothorax rather short, a third wider than long, the subparallel
and nearly straight sides rounding gradually from slightly before
the middle to the unconstricted apex, which is much more than half
as wide as the base; elytra only slightly wider than the prothorax
and distinctly more than twice as long, slightly more than one-half
longer than wide, the humeral swellings obtuse and moderately
prominent; sides subparallel, gradually arcuate about the parabolic
456 MEMOIRS ON THE COLEOPTERA
apex; intervals twice as wide as the striea, each with a single loose
series of rather large and conspicuous though somewhat shallow
punctures. Length (9) 2.7 mm.; widtho.gmm. North Carolina
(Black Mts.),—Beutenmiiller..........:....... uniseriatus n. sp.
The very short beak and nude scutellum might be held to separate
striatopunctatus as a different genus, but the same inconstancy in
vestiture of the scutellum is observable in Centrinopus. Convexulus
is from the same locality as ordinatus and comes rather near it in
general structure, but it is much narrower, with shorter elytra and
longer, laterally much less rounded prothorax, with decidedly finer
and sparser punctures and rather longer beak, the comparisons being
made from the male. These were both sent to me by Mr. Champion
under the name Jineicollis Boh., but Boheman states that in that
species the pronotum is densely punctate, so that they cannot be
considered as even closely allied. LeConte selected to represent
lineicollis, one of our species with dense, longitudinally rugose
pronotal sculpture, which is also an incorrect identification, as
recognized by Champion, who renamed it lecontei. In fact I do
not at present have anything corresponding closely with the
Boheman description of lineicollis, and ingenuus Csy., which was
placed in synonymy by Mr. Champion, is a distinctly different thing,
with widely isolated thoracic punctures and more broadly rhomboid-
oval body. The Florida species named neglectus by Blatchley,
I have not seen.
The female is comparatively rare throughout this genus, as may
be inferred from the sex identifications given in the above table.
Acentrinops n. gen.
The body in this genus is broadly oval and sparsely squamose, the
beak separated from the head by a fine sulcus, the mandibles when
closed forming an acute and prominent ogive, not at all decussate,
the inner margins feebly emarginate near the apex; the antennal
funicle is slender, the basal joint much, the second less, elongated,
the club well developed, very abrupt and oblong-oval, its basal
joint a third the mass. The anterior coxe are separated by about
one-half their width, the prosternum unarmed in the male, deeply
foveate in anterior half, the tibiz strongly mucronate within at tip,
the third tarsal joint small, only feebly dilated and the tarsal claws
BARIN4E 457
long, nearly straight, feebly diverging and connate at base. The
basal thoracic lobe is abruptly formed and sinuato-truncate at apex,
the scutellum small, nude and quadrate.
This genus, presenting a remarkable combination of characters,
may be placed near Centrinites for the present; the type is the
following:
Acentrinops brevicollis n. sp.—Evenly oval, rather convex and shining,
deep black, the legs feebly picescent; squamules above long, slender,
white, everywhere well separated but conspicuous in single or irregularly
double series on the elytra and abruptly in lateral fifth of the pronotum,
the remainder of the latter glabrous, the squamules beneath are still
smaller, very slender and white, evenly and sparsely distributed through-
out; beak in the male slender, cylindric, shining, loosely sculptured,
feebly, evenly arcuate and a little longer than the head and prothorax,
the antenne at the middle; prothorax three-fifths wider than long, the
sides strongly and evenly converging and evenly, feebly arcuate from
base to the distinct apical tubulation, which is much less than half as
wide as the base; punctures minute and sparse, rapidly coarser and
rugulose toward the sides, the smooth median line distinct and entire;
elytra oval, with evenly arcuate sides and rather narrowly rounded apex,
three-sevenths longer than wide, at the moderately prominent humeri a
little wider than the prothorax, two and one-half times as long; strize
moderate; intervals between three and four times as wide as the striae,
loosely, moderately and confusedly punctured; male with the abdomen
distinctly impressed medially at base. Length (o’) 2.75 mm.; width
1.35 mm. Texas (Alpine),—Wickham.
The white vestiture of the prosternum medially throughout its
length, is denser and more conspicuous than elsewhere on the under
surface.
Nicentrites n. gen.
The general organization of this proposed genus is nearly as in
Nicentrus, but the mandibles are entirely different and of very
peculiar structure; they are sharply angulate within, and their
outer contour is sinuate, so that the acute apex of each is everted.
The only other character to which attention should be called, is the
dense and very uniform vestiture throughout. The example at
hand which I have identified as Nicentrus testaceipes Chmp., also
belonging to this genus, came from near Guatemala City, and is
ovulate, with subinflated elytra and rather small prothorax, in
fact exactly like the figure given on the plate in the ‘Biologia’’;
the following, which may be assumed as the type of Nicentrites, is at
458 MEMOIRS ON THE COLEOPTERA
least quite different from this supposed example of festaceipes in
general outline of the body:
*Nicentrites hidalgoanus n. sp.—Oblong-suboval and convex, black,
densely clothed with sublinear scales, brownish-white above and white
beneath, the legs, antenne and distal part of the beak bright red, the
first with finer, sparse squamules; beak in the male rather short and
thick, evenly and feebly arcuate, not as long as the head and prothorax
and closely squamulose to near the apex, the antenne at three-fifths;
prothorax two-fifths wider than long, the sides parallel and feebly arcuate
in about basal, rounded and converging in apical, half, the apex barely
at all constricted and half as wide as the base; punctures moderate and
close-set, but clearly defined and separated; scutellum small, densely
albido-squamose; elytra ovulate, a fifth wider than the prothorax and
nearly two and one-half times as long, one-half longer than wide, grad-
ually somewhat narrow at apex, the humeral prominences very feeble;
striz rather fine but deep; intervals flat, subequal, four or five times as
wide as the striz and finely, confusedly, rather closely punctate; male
abdomen impressed and less squamulose medio-basally; anterior tibize
with the terminal spur conspicuous and very sharp. Length (co) 3.15
mm.; width 1.25 mm. Mexico (Hidalgo). One example.
Differs from the male example of festaceipes, at hand, in its larger
size, more parallel form, larger and more transverse, laterally more
rounded prothorax, with more distinct and entire median smooth
line and in its more elongate and apically more gradually narrowed
and rounded elytra. The flattening of the upper surface in festa-
ceipes, alluded to by Mr. Champion, does not accord with my
example, the surface of which is as strongly convex as in any
Nicentrus.
Glyptogerzus n. gen.
The type of this proposed genus is Centrinus punctatissimus Boh..,
of Cuba. The body is subrhomboid-oval, convex and _ totally
nude, excepting a very few small spots of aggregated white scales
and a few others sparsely scattered, also small dark decumbent
setee from the elytral punctures as in Pachybaris. The beak is
thick and strongly sculptured, feebly tapering apically and differing
but little in the sexes, being a little more tapering and smoother
apically in the female. The antennz are inserted very slightly (@ )
or much (co) beyond the middle, and the joints, after the elongate
first of the funicle, are all short—an important character dis-
tinguishing it from Centrinaspis. The pronotum is extremely
coarsely punctate, the elytral grooves moderate and the intervals
BARIN 459
convex, with a single series of strong asperulate punctures. The
scutellum is small and nude. The mandibles and tarsal claws are
exactly as in Centrinaspis, and the prosternum of the male is not
armed.
Pachybaris Lec.
The very broadly oval form and nude surface of the body in this
genus, are very different from anything observable in the preceding
types of the Centrinini, though remindful somewhat of Glyptogereus.
The claws are free, the mandibles crenate within, coming together
along their inner margin nearly as in Centrinus and forming a
pointed ogive when closed. The anterior coxe are separated widely,
the prosternum flat, impressed slightly at apex. Sexual characters
are very feeble. The type, named porosa by LeConte, inhabits
lower Florida, the following is a smaller and less broadly oval species:
Pachybaris ludoviciana n. sp.—Broadly oval, moderately convex,
shining, black and glabrous throughout, the legs rufous, coarsely punc-
tured and with small sparse squamules; beak as in porosa but not quite
so thick, the antennz nearly similar; prothorax also as in porosa but with
the coarse sparse punctures becoming much denser toward the. sides,
the median basal lobe less deeply emarginate for the scutellum; elytra
almost similar but a little narrower and longer, the grooves coarse and
deep; intervals nearly twice as wide as the grooves, with a single series
of very coarse punctures, each having a slender dark decumbent and
wholly inconspicuous squamule, the punctures a little smaller on the
intervals toward the suture, usually somewhat confused on the second;
sutural groove not attaining the base; scutellum small, rounded, flat
and nude; under surface with moderately coarse punctures, rather close-
set but not dense. Length (o' 2) 3.4-3.5 mm.; width I.7-1.75 mm.
Louisiana (Morgan City). Four examples.
The antennal club in this genus is very gradual in formation,
narrowly oval, the outer funicular joints gradually wider in exact
continuation of its outline and somewhat similarly micro-pubescent;
the first funicular joint is as long as the next four, which are short
and subequal. This formation of the antennz is almost exactly as
in the preceding Glyptogereus, which also has a strongly sculptured
and semi-glabrous body, but in the latter the anterior coxe are
separated by less than their own width and the mandibles are
sharper, coming together along their straight and very even inner
sides and forming, when closed, an acute triangle; the body, also,
is rhomboidal and not evenly and broadly oval as it is in Pachybarts.
460 _ MEMOIRS ON THE COLEOPTERA
Calandrinus Lec.
The bodily form is here very different from that of the two pre-
ceding genera, being oblong-suboval, compact and very convex,
and the mandibles are peculiar; they are not decussate, but indi-
vidually prominent, and are strongly uni- or bidentate both ex-
ternally and internally. The beak is rather long and smooth, the
antenne inserted near the middle and notably slender, the anterior
coxee separated by about their own width, the prosternum not
sexually modified and the claws free and slender. The vestiture
beneath is rather even though sparse, but on the elytra there are
aggregations of pale scales, generally visible at the sides basally and
subapically, together with other unevenly distributed darker
squamules. The sexual characters seem to be extremely feeble.
The following is the narrowest known species:
Calandrinus angustulus n. sp.—Elongate, constricted at the junction
of the prothorax and elytra, very convex, shining and uniform pale red-
brown throughout; sparse pale squamules of the pronotum rather more
numerous but not close toward the sides; elytra with a spot of white
scales at the sides basally and another near the apex, also narrowly along
the suture before the middle, the scales brown, more linear and sparse on
the disk basally, the surface elsewhere nearly glabrous; squamules
beneath small, sparse, slender and yellowish, lying within the notably
coarse punctures; beak (0) long, slender, smooth, cylindric, evenly and
moderately arcuate and half as long as the body, the antenne only
slightly beyond the middle, or (2 ) nearly similar but with the antenne
at or just visibly behind the middle; prothorax as long as wide, the sides
parallel, strongly and subevenly arcuate, more inflated before the middle,
the apex constricted and three-fourths as wide as the base, the basal
lobe subobsolete; punctures moderately coarse, well separated; smooth
median line entire, widest centrally; scutellum very small, nude; elytra
two-fifths longer than wide, at the middle slightly wider than the pro-
thorax, one-half longer, the sides parallel and rather strongly arcuate,
gradually converging behind about the middle to the somewhat narrowly
rounded apex and feebly sinuate near apical fourth; humeral prominences
completely wanting; strie moderately coarse, abrupt but only moder-
ately deep, the intervals not quite twice as wide as the grooves, each with
a single series of small and well separated punctures. Length (' @)
2.6-2.7 mm.; width 0.9-1.0 mm. New Mexico (Jemez Springs),—
Woodgate. Two examples. ;
This species is not closely allied to obsoletus, grandicollis or
insignis, being very much narrower and more constricted at the
waist than in any one of them.
BARINZ 461
Centrinogyna Csy.
The body in this genus in general outline is not at all unlike that
of some forms allied to Limnobaris, and especially the genus Dirabius,
but the mandibles are not decussate to any decided degree and are
strongly toothed within, though the external teeth of the preceding
genus are wanting. The prosternum is simple, separating the cox
by less than their own width and the tarsal claws are free and slender.
The most remarkable peculiarity of the genus, however, resides in
the pygidium, which is vertical, well developed and baridiform in
the male, but oblique and completely concealed beneath the elytra
in the female, as in both sexes of Centrinaspis and other genera
allied thereto. The following are four species of the genus hitherto
undescribed:
Centrinogyna canadensis n. sp.—Oblong-elongate, moderately con-
vex, only feebly shining, piceous in color, the legs slightly more rufous;
squamules above very small, slender and obscure, not distinct on the
pronotum, forming a single loose line on each strial interval, very minute
and indistinct beneath; beak in the female cylindric, nearly smooth,
evenly and moderately arcuate and not longer than the prothorax, the
antenne at three-fifths; prothorax very slightly wider than long, the
sides parallel, evenly and distinctly arcuate, widest at about the middle,
rapidly constricted at the tubulate apex, which is fully two-thirds as
wide as the base; surface with rather coarse and dense longitudinal ruge,
the median line narrowly smooth, also with a small narrow irregular sub-
median discal spot at lateral fifth; scutellum very small, nude; elytra
three-fourths longer than wide, as widé as the prothorax and about
twice as long, the parallel sides nearly straight, gradually arcuately and
in part subsinuously converging in apical third to the broadly obtuse
apex; humeral prominences wholly wanting; grooves rather coarse and
deep; intervals almost twice as wide as the grooves, each with a single
series of small and moderately separated punctures, somewhat confused
on the second and third; under surface coarsely punctate, less so and
more sparsely on the abdomen. Length (9) 4.6 mm.; width 1.6 mm.
Canada (Winnipeg, Manitoba),—Hanham.
Allied to strigata Lec., but differs in its less distinct vestiture, in
the rather less coarse pronotal rugz, with sublateral smooth discal
spot at each side and narrower median smooth line, and in the much
finer punctures of the strial intervals; the beak, also, is a little
shorter and thicker.
Centrinogyna laramiensis n. sp.—Narrow, parallel and rather convex,
the elytra feebly shining, brownish-piceous, the tibia more rufous;
squamules above minute, sparse, uniform and barely evident, forming
462 MEMOIRS ON THE COLEOPTERA
single interstrial lines, sparsely scattered and somewhat more distinct
over the under surface; beak in the male rather thick but cylindric and
almost smooth, feebly arcuate, and as long as the head and prothorax,
the antenne at three-fifths; prothorax as long as wide, slightly widest
about the middle, the sides parallel and broadly arcuate, abruptly con-
stricted at the tubulate apex, which is two-thirds as wide as the base;
surface with dense, elongate and anastomosing rugule, even throughout,
the median line in part smooth but extremely narrow; scutellum small,
nude; elytra not quite twice as long as wide, equal in width to the pro-
thorax and four-fifths longer, the parallel sides straight, gradually
arcuate and converging—partially subsinuate—to the obtusely rounded
apex; strie moderate, deep and abrupt; intervals nearly twice as wide
as the grooves, each with a single series of rather close-set, distinct
punctures, a third as wide as the intervals, confused on the somewhat
wider third interval; under surface strongly but not densely punctate,
the propleura rugulate; pygidium vertical, twice as wide as long, very
convex and finely, sparsely punctate; abdomen deeply, rather narrowly
impressed medially toward base. Length (0) 3.75 mm.; width 1.3 mm.
Wyoming (Laramie).
Also allied to stvigata but smaller, more slender, with less de-
veloped setiform squamules, much finer pronotal rugule and finer
smooth median line, rather less coarsely sculptured elytra and
more finely and sparsely punctulate pygidium in the male; from
canadensis it differs in the finer interstrial punctures, smaller size
and much more slender form; canadensis is a little stouter than
strigata.
Centrinogyna subzqualis n. sp——General characters more nearly as in
procera, but shorter and much stouter; color black throughout, the lustre
alutaceous; squamules above extremely sparse, very small and barely
discoverable, uniform, only very little more evident beneath; beak in
the female long, slender, evenly and moderately arcuate, almost smooth
and distinctly longer than the head and prothorax, the antennz near
four-sevenths, the basal funicular joint as long as the next three, the
club abrupt, obtusely oval, its first joint distinctly less than half the
mass; prothorax barely visibly wider than long, the sides parallel and
very moderately, subevenly arcuate, gradually rounding and converging
before the middle to the tubulate apex, which is very short and scarcely
more than half as wide as the base; punctures small, irregularly close-
set, the smooth median line distinct, finer apically; scutellum narrower
than long, smooth and polished, emarginate behind; elytra scarcely
one-half longer than wide, a little wider than the prothorax and three-
fourths longer, the sides subevenly arcuate to the rather narrowly rounded
apex, becoming subparallel in about basal half, the humeral prominence
small but evident; strie rather coarse, finer behind except suturally,
finely punctured along the bottom; intervals basally but little, posteriad
nearly three times, wider than the striz, with moderate and rather close-
BARIN-E 463
set punctures, confused medially along the third. Length (2) 4.1 mm.;
width 1.76 mm. Canada (Winnipeg, Manitoba). Further determina-
tive data unrecorded. One example.
Resembles the Californian procera very closely in color, sculpture
and in its almost glabrous and subalutaceous surface, but it differs
in its much shorter, stouter and rather more convex form and nar-
rower tubulate apex of the prothorax.
*Centrinogyna hispidula n. sp.—Oblong, convex, piceous, the beak
blackish; elytra, under surface and legs red-brown, slightly shining;
vestiture above consisting of rather long and suberect coarse hairs,
whitish in color, distinct throughout the pronotum but closer toward the
sides, sparse but distinct throughout the elytra but closer on the third
interval, especially in a dense basal spot, sparse but white and distinct
on the under surface; beak in the female rather thick, subcylindric,
feebly tapering, arcuate, minutely punctulate except basally and as long
as the head and prothorax, the antenne at three-fifths; prothorax a
third wider than long, the sides parallel, broadly arcuate, rounding
rapidly before the middle to the tubulate apex, which is four-sevenths
as wide as the base; sculpture strong and dense, consisting of long
anastomosing ruge, the smooth median line entire; scutellum small,
narrow, nude, polished and black; elytra one-half longer than wide, a
little wider than the prothorax and nearly four-fifths longer, the sides
feebly converging and subevenly, moderately arcuate from the almost
obsolete humeral swellings to the rapidly obtuse apex, immediately
before which the sides are faintly sinuate; grooves deep, punctate;
intervals one-half wider than, to twice as wide as, the grooves, strongly,
loosely and confusedly punctate; mes-episterna visible at the waist;
under surface strongly, not densely punctate, with sparse, hair-like white
squamules. Length (9) 4.0-4.3 mm.; width 1.45-1.65 mm. Mexico
(Sierra Madre Mts., Chihuahua),—Townsend. Two specimens.
This species is quite unlike any other known to me in the peculiar
sparse subhispid vestiture; the male might exhibit some special
characters.
Anacentrus n. gen.
In this genus, the type of which is Limnobaris bracata Csy., the
body is of small or very moderate size, oblong-oval and rather stout
to very slender, the mandibles decussate, with large internal tooth,
the second funicular joint small, though slightly elongate, the first
about as long as the next three as a rule, the club ovate, with its
first joint very large, constituting rather more than half the mass.
The anterior coxe are well separated, the prosternum unmodified
and never armed in the male, and the upper surface has the punc-
464 MEMOIRS ON THE COLEOPTERA
tures and vestiture very much diversified. The genus is related to
Centrinogyna in having the apical part of the male pygidium exposed,
but it is very oblique and not vertical as it is in the latter genus.
It constituted the first subgeneric division of Limnobaris in my
revision of the subfamily, but I find under more careful comparative
study, that neither this nor any other of the types which I placed
under Limnobarts really belongs there, and Limnobaris, as exempli-
fied by J7-album and pusio, does not occur in America. Our
described species of Anacentrus are punctiger and nasutus of LeConte,
and bracatus, limbifer, blanditus, tabtdus, deplanatus, denudatus,
planiusculus, oblitus and seclusus Csy. As an addition to these,
the following should be made known:
Anacentrus ornatus n. sp.—Somewhat broadly oval, rather convex, |
scarcely shining, the body and beak deep black, the legs obscure rufous;
vestiture above coarsely squamiform and yellowish, dense toward the
sides of the pronotum and toward the basal lobe, broadly dispersed
medially on the elytra, forming partial, rather close lines, single but
more broadly confused on the third interval behind the middle and the
third and fifth toward base, wanting in a large discal area from the suture
to the fourth groove and narrowly along the suture posteriorly, -the
scutellum nude, the scales beneath white and separated, finer on the
abdomen; beak in the female slender, cylindric, nearly smooth, feebly
arcuate and as long as the head and prothorax, the antenne at four-
sevenths; prothorax two-fifths wider than long, the sides subevenly
arcuate, parallel basally, the feebly constricted apex more than half as
wide as the base; punctures moderately coarse, dense, the smooth line
evident only in about basal half; elytra a fourth longer than wide, para-
bolic, at the moderately tumid humeri evidently wider than the prothorax,
three-fourths longer; grooves coarse; intervals not twice as wide as the
grooves, with moderate punctures in single lines, in some parts confused.
Length (2) 2.6-2.8 mm.; width 1.15-1.35 mm.; Missouri (St. Louis),
Tennessee (Memphis) and Indiana.
More closely allied to bracatus than to any other described species,
but differs in its smaller size and less obese form, closer pronotal
punctures and more squamose strial intervals; the single line of long
remote pale scales on the third interval in bracatus is wholly wanting
here.
Anacentrus ovulatus n. sp.—Broadly ovulate, small in size, convex,
slightly shining, black, the legs piceous; upper surface with the whitish
scales close along the sides of the pronotum and sparse medio-basally,
elsewhere wanting, on the elytra arranged somewhat as in ornatus but
less dense and conspicuous where present, beneath sparse, each lying
within a coarse puncture; beak in the female cylindric, nearly smooth,
BARIN 465
feebly and evenly arcuate, slightly longer than the head and prothorax,
the antenne just beyond the middle; prothorax a fourth wider than
long, the sides parallel, evenly and moderately arcuate, rapidly rounding
inward in apical third to the tubylate apex, which is four-sevenths as
wide as the base; punctures relatively somewhat coarse and close-set,
sparser and isolated basally, the smooth median line obsolete apically;
elytra at the feebly tumid humeri slightly wider than the prothorax, two-
thirds longer, a fifth longer than wide, evenly parabolic; grooves deep,
abrupt; intervals a little less to more than one-half wider than the grooves,
each with a series—sometimes partially confused—of fine, feeble and
not dense punctures. Length (Q) 2.18 mm.; width 1.1 mm. North
Carolina (Southern Pines),—Manee.
Differs from ornatus in its much smaller size, less dense sculpture
and less dense scales in the irregular spots and lines of the upper
surface.
Anacentrus decorus n. sp.—More elongate-oval than in ornatus, con-
vex, shining, pale brownish-red in color throughout; scales of the upper
surface whitish, close toward the pronotal sides and less so toward the
basal lobe, elsewhere dark, fine and very inconspicuous or wanting, the
scutellum nude; on the elytra they are fine, sparse and in single lines, a
little coarser, more irregular and distinct on the third and fifth intervals—
throughout the length of the latter; beneath fine and sparse, lying within
the notably coarse punctures; beak (0) cylindric, smooth, evenly and
moderately arcuate, minutely and sparsely punctate and barely longer
than the prothorax, or (2) similar but longer, rather longer than the
head and prothorax; antennze behind three-fifths (co) or at four-sevenths
(2); prothorax barely a fifth wider than long, the sides subparallel,
very feebly arcuate, gradually rounding before the middle to the short,
feebly constricted apex, which is rather more than half as wide as the
base; punctures moderately coarse, separated by their own diameters
or more, the smooth median line subentire; elytra two-fifths (o") to one-
half (9) longer than wide, only a little wider than the prothorax and
less than twice as long, elongate-oval in form, the apex rather acutely
ogival; grooves somewhat coarse; intervals one-half wider than the
grooves, with single, sometimes slightly impressed series of moderately
coarse, not very widely separated punctures; male with a deep rounded
impression at the base of the abdomen. Length (@ 2) 3.2-3.6 mm.;
width 1.2-1.4 mm. Colorado (locality unrecorded).
This species would seem to be related to the Texan punctiger Lec.,
which is wanting in my collection, but, from the description which
I drew up from the type, punctiger certainly has more elongate
elytra, narrower thoracic apex and more even and sparser pronotal
punctures. The prothorax in decorus is apparently more elongate
than in punctiger, where it is said to be a third wider than long and
less than half as long as the elytra.
T. L. Casey, Mem. Col. IX, Feb. 1920.
466 MEMOIRS ON THE COLEOPTERA
Anacentrus oklahome n. sp.—Oblong-oval, convex, black, the elytra
piceous, the legs and beak rufous; upper surface with fine, hair-like and
very sparse vestiture, slightly more evident toward the thoracic sides,
in a single very inconspicuous series on the strial intervals, but with a
denser spot of whitish squamules at the base of the third, and having
very coarse, loose punctures throughout the under surface, each enclosing
a very small and slender squamule; beak in the male slender, perfectly
cylindric, minutely, sparsely punctulate, feebly and evenly arcuate and
as long as the head and prothorax, the antenne at three-fifths; prothorax
fully a third wider than long, the sides parallel, evenly and moderately
arcuate, rapidly transversely rounding apically to the large and strongly
tubulate apex, which is much more than half as wide as the base: punc-
tures coarse, less so and well isolated medially but coarse and longitudi-
nally confluent laterally, forming anastomosing ruge; scutellum very
small, nude, black; elytra just visibly wider than the prothorax and twice
as long, elongate, ovulate, not very obtusely rounded at apex; humeral
swellings feeble, the mes-epimera distinct from above, the grooves rather
fine, somewhat deep; intervals twice as wide as the grooves to more, each
with a single series of moderate, well separated and distinct punctures;
abdomen of the male deeply impressed medio-basally. Length (c”) 2.9
mm.; width 1.18 mm. Oklahoma (Atoka),—Wickham.
This is another species allied to punctiger, but the elytral stric
are finer, and the intervals—described as one-half wider than the
strie in punctiger—relatively much broader. The apex of the
prothorax, also, is more abruptly and strongly constricted and more
broadly tubulate.
Anacentrus minuens n. sp.—Body very small, oblong-suboval, only
very moderately convex, scarcely shining, rufo-piceous in color, the
beak blackish; scales above yellowish-white and dense along the sides
of the prothorax and before the basal lobe, elsewhere fine, sparse, darker
and inconspicuous, on the elytra distinct on parts of the third and fifth
intervals, but otherwise darker and inconspicuous, though not much
smaller, rather sparse but distinct beneath; beak in the male slender,
distinctly punctulate, squamose at base, cylindric, very feebly but evenly
arcuate and not longer than the prothorax, the antenne near three-
fifths; prothorax a fourth wider than long, the sides parallel, evenly,
feebly arcuate, rounding and rapidly more convergent in less than apical
third, the tubulate apex four-sevenths as wide as the base; punctures
deep, even, moderately coarse and dense though clearly defined, the
median smooth line entire; elytra short, abruptly a good deal wider than
the prothorax, with rather prominent humeral swellings, three-fifths
longer, scarcely a fourth longer than wide, the sides subparallel in anterior,
ogivally rounded in posterior, half; grooves very moderate; intervals
two to three times as wide as the grooves, with moderate loose punctu-
ation; abdomen in the male narrowly and deeply impressed medio-
basally. Length (o’) 2.2 mm.; width 0.9 mm. Arizona.
BARINE 467
Related rather closely to the southern California seclusus and
included with the type of that species in my former work, but it is
much smaller, the beak very much too small even allowing for
difference of sex, the prothorax smaller, shorter, less coarsely and
more closely punctate, and the elytral striz finer and not distinctly
punctate; in the female type of seclusus the strie are remotely,
strongly and crenately punctate, the intervals relatively not so
wide and with the punctures twice as numerous; the elytra in
seclusus, when compared with the prothorax, are relatively much
smaller than in minuens. The length and width of the type of
minuens given in my revision are too great.
Anacentrus validulus n. sp.—Form, coloration, lustre and facies some-
what as in blanditus, but much larger and stouter, polished, rufo-piceous,
the elytra clearer red-brown; upper surface nearly glabrous, the pale
yellowish scales forming a narrow and rather dense abrupt pronotal
margin and an elongate spot at the base of the third strial interval, the
elytral surface elsewhere with only a few widely dispersed yellowish
scales; under surface with very small slender squamules lying within the
coarse punctures, the met-episterna alone densely squamose, less so
posteriorly; beak in the female cylindric, evenly and moderately arcuate,
finely, sparsely punctate and shining, about as long as the head and pro-
thorax, the antennz at four-sevenths; prothorax a little wider than long,
the sides rounding gradually from behind the middle to the feebly con-
stricted apex, which is more than half as wide as the base; punctures
small and widely separated, the smooth line not entire; elytra parabolic,
just visibly wider than the prothorax and three-fourths longer, the grooves
moderate, feebly crenulate; intervals three to nearly four times as wide
as the grooves, with fine, rather confused punctures, having also single
series of larger punctures bearing the scales and very remotely separated
along intervals 3-5-7. Length (2) 3.7 mm.; width 1.65 mm. Texas
(Austin).
Separable easily from blanditus, occurring in the same region, by
its much larger size and stouter form, somewhat larger and more
elongate antennal club, much more convex pronotum, as shown by
the more arcuate median line in lateral profile, and other characters;
the elytral sculpture is, however, almost identical in the two species.
Anacentrus subtropicus n. sp.—Rather short, oblong-oval and convex,
moderately shining, black, the legs rufous; entire upper surface com-
pletely glabrous; punctures of the under surface bearing slender and
very sparse, inconspicuous squamules; beak in the female slender, evenly
cylindric, nearly smooth, very evenly, moderately arcuate and scarcely
as long as the head and prothorax, the antenne near three-fifths; pro-
thorax between a fourth and third wider than long, the sides parallel and
468 MEMOIRS ON THE COLEOPTERA
evenly, distinctly arcuate, very gradually and coarcuately rounding
anteriorly to the briefly subtubulate apex, which is barely more than
half as wide as the base; punctures fine, rather sparse, larger and forming
some rugule at the extreme sides; smooth median line sharply defined
and entire; scutellum flat, smooth, bicuspid behind; elytra nearly one-
half longer than wide, only slightly wider than the prothorax and two-
thirds longer, the humeri obtusely tumid; outline subparabolic, the apex
somewhat obtuse; strie moderate, feebly and minutely, subcrenately
punctate; intervals three to four times as wide as the striz, with single
or confused series of very fine punctures, those of the third and fifth also
with some noticeably larger punctures at remote intervals in the series;
abdomen shining, finely, rather sparsely punctulate. Length (2) 2.8
mm.; width 1.3 mm. Texas (Brownsville),—Wickham.
There is no other species known to me with which this can be
closely compared; probably it belongs to a more tropical structural
type. The species which I described under the name Limnobaris
oblita, has a similar perfectly nude and even more alutaceous upper
surface, but in the latter the body is more elongate and less convex,
and the sculpture throughout much stronger and decidedly closer.
Anacentrus apertus n. sp.—Elongate, oblong-oval, rather depressed,
polished, deep black throughout, glabrous, the strial intervals with
single series of minute and inconspicuous setiform squamules; those
beneath also very small and sparse; beak slender, cylindric, as long as
the head and prothorax, a little shorter in the male, finely, sparsely
punctulate, evenly and feebly arcuate, the antenne slender, at three-
fifths (o7) or but just behind this point (2); first joint of club more than
half the mass, pubescent; prothorax fully as long as wide, the sides
parallel, broadly, subevenly arcuate, just visibly more converging before
the middle to the apical constriction, the tubulate apex evidently more
than half as wide as the base; punctures not coarse but. distinct, well
separated, sometimes rugulosely confluent at the extreme sides; median
smooth line slightly traceable centrally; scutellum very small, emarginate
behind; elytra one-half longer than wide and subparabolic, with only
feebly marked and obtuse humeri, slightly wider than the prothorax and
four-fifths longer; strie sharply defined but not very coarse or deep;
intervals between two and three times as wide as the grooves, each witha
single line of minute and widely spaced punctures; male with the apical
part of the pygidium exposed, the abdomen shallowly impressed medio-
basally. Length ( @) 3.5-3.8 mm.; width 1.2-1.33 mm. Utah
(Provo and near St. George) and Texas (western),—Dunn. Seven
specimens.
Allied to the Californian nasutus Lec., but much smaller, with
narrower elytral striz and relatively wider intervals and also finer
and still sparser punctures of the under surface. In nasutus the
prothorax is more abruptly constricted at apex than in apertus.
»
BARINZ 469
Anacentrus subcrenatus n. sp.—A little larger and stouter than apertus,
similarly subdepressed and shining, black throughout, the sparse and
minute hair-like squamules similar; beak similar, the antenna slightly
longer, the basal funicular joint more notably elongate; prothorax
similar but with the punctures stronger, notably coarser and more rugose
toward the sides; elytra nearly similar but with the somewhat coarser
grooves more coarsely and subcrenately punctate, the punctures of the
interstitial series small but stronger than in apertus. Length (2) 3.5
mm.; width 1.4 mm. Texas (El Paso),—Dunn.
This species is not as large as masutus, and the elytral grooves are
less coarse and more crenately punctate; the beak is relatively a
little longer and more arcuate and the sculpture toward the sides
of the pronotum coarser, dense and more rugose.
Anacentrus franciscus n. sp.—Body nearly as in nasutus but much
smaller, similar in color and in general features of sculpture and vestiture;
beak in the female nearly similar but shorter, not longer than the pro-
thorax and more arcuate; prothorax similar but with the apex still
more abruptly tubulate, the punctures finer and more numerous, a little
coarser and moderately close at the sides; elytra almost similar but
shorter, only three-fourths longer than the prothorax, the small punc-
tures along the bottom of the strize more distinct and sharply defined
but not at all crenate; interstitial serial punctures still smaller. Length
(2) 3.4 mm.; width 1.3 mm. California (San Francisco). A single
example, taken by the writer.
The four forms nasutus, apertus, subcrenatus and franciscus,
form a compact small group of the genus and are undeniably closely
interallied, so that they might appropriately be considered, per-
haps, as subspecifically related to one another. Nasutus is the
largest, being somewhat over 4 mm. in average length, and is from
southern California—described from Tejon—and in my collection
is represented by a series of five specimens from Los Angeles Co.
Anacentrus angustus n. sp.—Form narrow, very elongate and some-
what depressed, the upper profile of the pronotum only just visibly
arcuate, the color dark red-brown throughout, the lustre moderately
shining; squamules of the upper surface small, slender and yellowish,
indistinct on the pronotum except along the sides, where they are sparse
and very minute, forming single lines on the strial intervals, minute and
sparse beneath; beak in the female rather short, scarcely as long as the
prothorax, cylindric, evenly and moderately arcuate, finely punctulate,
the antenne near four-sevenths, the first joint of the club much more
than half the mass; prothorax distinctly longer than wide, the sides
parallel and straight, gradually and moderately rounding before the
middle, the tubulate apex two-thirds as wide as the base; punctures
moderate and well separated, coarser and rugulosely confluent at the
470 MEMOIRS ON THE COLEOPTERA
sides, the median smooth line wider centrally, subentire; scutellum very ©
small; elytra more than three-fourths longer than wide, very narrowly
subparabolic, barely wider than the prothorax and three-fourths longer,
the humeri scarcely at all prominent; striz deep and groove-like, moder-
ately coarse, the intervals twice as wide as the grooves to somewhat less,
with single series of moderate though strong and widely spaced punc-
tures, the punctures beneath moderate and sparse; anterior coxz separ-
ated by more than their own width. Length (2) 3.0 mm.; width 0.8
mm. Oregon (Huntington). One specimen.
Not closely allied to any other species and distinguishable readily
by its slender, subparallel form and other characters noted above.
It belongs to the nasutus section however.
*Anacentrus guatemalensis n. sp.—Elongate-oval, polished and con-
vex, piceous-black, the elytra less dark than the prothorax; scales above
yellowish and conspicuous though sparse along the sides of the pronotum,
in a small denser spot at each side of the base and on the basal lobe,
elsewhere wanting; on the elytra they are slender, darker and sparse in
single interstitial lines and more scale-like and paler, though slender and
sparse, in a sublateral vitta extending to the apex and thence along the
suture in apical third: on the under surface they are slender, white and
sparse throughout within the coarse and somewhat close-set punctures;
beak in the female cylindric, evenly and slightly arcuate, finely, sparsely
punctulate and as long as the head and prothorax, the antennz at four-
sevenths, the club narrow; prothorax a sixth wider than long, parallel,
the sides slightly rounding anteriorly, the subtubulate apex two-thirds
as wide as the base; punctures sparse, deep and rather coarse, with a
sublateral smoother area, the median line also smooth; scutellum very
small, nude; elytra one-half longer than wide, subparabolic, slightly
wider than the prothorax and four-fifths longer, the striz moderate;
intervals three times as wide as the strie, each with a single line of
moderate, deep and widely spaced punctures. Length (2) 3.0 mm.;
width 1.15 mm. Guatemala (Mauricio,—elev. 500 ft.). One example.
A distinctly differentiated species in its polished surface, coarse,
rather sparse punctures and in peculiarities of ornamentation.
*Anacentrus politus n. sp—Subparallel, narrower than the preceding,
convex, polished, piceous-black throughout; whitish scales of the upper
surface loosely aggregated along the sides of the pronotum and denser
in a spot on the basal lobe, the squamules elsewhere invisible; on the
elytra they are very small, slender and scarcely visible but become
more distinct though slender and sparse toward the suture apically, the
very small scutellum nude as usual; beneath, the squamules are fine and
very sparse within the very coarse, rather close-set punctures; beak in
the female slender, cylindric, evenly but only feebly arcuate, finely,
sparsely punctulate and only as long as the prothorax, the antenne at
four-sevenths, the club narrow as in the preceding; prothorax very
nearly as long as wide, the parallel sides distinctly, subevenly arcuate
BARIN 471
_ from base to the tubulate apex, which is nearly three-fourths as wide as
the base; punctures small but deep, sparse, separated by two or three
times their diameters, a little larger and closer laterally, the smooth median
line traceable in basal half; elytra three-fifths longer than wide, barely
wider than the prothorax and fully twice as long, the sides parallel and
nearly straight, slightly converging and partially sinuate posteriorly to
the obtusely rounded apex; striae deep but not coarse; intervals fully
three times as wide as the striz, each with a single line of very fine and
widely spaced punctures. Length (2) 2.6 mm.; width 0.75 mm.
Guatemala (Yzabal,—elev. 100 ft.). One specimen.
This species is peculiar in the form of the elytra, the posterior
partially sinuous obliquity toward the obtusely rounded apex,
exactly as in Centrinogyna, indicating again that Anacentrus is a
genus rather closely allied to Centrinogyna, but differing in the
small size of the body and in having only the tip of the oblique
pygidium exposed in the male. I cannot find that either of these
Guatemalan species was described by Mr. Champion, and I kept
no record of the source from which they were received many years
ago.
Dirabius n. gen.
The body here is much larger than in the preceding genus and is
subglabrous, the squamules above and beneath always minute,
grayish, very sparse and inconspicuous, the integuments at first
view being glabrous. The beak is rather long and slender, cylindric
and sometimes almost straight in the female, but, unlike the pre-
ceding genus and more nearly as in Odontocorynus, it becomes thick
and strongly sculptured in the male; the surface of the beak joins
the head without constriction but there is generally a frontal punc-
ture. The mandibles are decussate, with large internal tooth, the
antenne slender, the first two funicular joints notably elongate and
often subequal and the club peculiarly narrow, gradually pointed
and with long basal joint; the anterior cox are well separated and
the prosternum simple in both sexes. The type of the genus is
Centrinus rectirostris Lec., which I erroneously referred to Limno-
baris in my revision. Centrinus calvus Lec., from Georgia and
Florida, also belongs to this genus, but is not now represented in my
collection; the others at hand may best be treated in tabular form
as follows:
Body broader and oblong, convex, the prothorax sometimes inflated at
Gitags AC eeagioiin a ROU eS lite) 0,4 fh ra 2
472 MEMOIRS ON THE COLEOPTERA
Body more elongate, narrower, subcylindric or feebly anteriorly nar-
rowed, the habitus extremely similar to that of Limnobaris T-album
and pusio. [Subg. LIMNOBAROPSIS nov.]...........5.00.5--00 7
2——Prothorax not inflatedcat ‘the ‘sides: £22) page ts ee ee ee 3
Prothorax more or less strongly, laterally inflated and rounded, appar-
ently in: bothtsexts. 2. <>. SER an RO rn een ee 6
3—Head half as wide as the thoracic base. Body elongate-suboval,
strongly convex, feebly alutaceous, deep black; beak in the female
much longer than the head and prothorax, cylindric, nearly straight,
just visibly and evenly arcuate, finely, not densely punctate, the
antenne at the middle; prothorax a fourth ,wider than long, the
sides moderately convergent and just visibly arcuate, rounding at
apical third to the strongly tubulate apex, which is much more than
half as wide as the base; punctures moderately coarse but not deep,
finer medially, everywhere well separated, the propleura rugulose;
median smooth line entire; elytra four-fifths longer than wide,
evidently wider than the prothorax and more than twice as long,
the humeral swellings broad but feeble; sides parallel and feebly
arcuate, broadly and circularly rounding in about apical third;
grooves narrow but very deep and abrupt; intervals at least three
times as wide as the grooves, with fine and subconfused, slightly
transverse, loose punctuation; abdomen finely, sparsely punctate;
legs slightly picescent. Length (2) 4.7 mm.; width 1.75 mm.
Tin ois:c cs cise ccantse dt heats eee Pei eee oe oe oo ees rectirostris Lec.
Head much less than half as wide as the thoracic base............... 4
4—Elytral grooves smooth, though closely punctate along the bottom.
Body larger in size, polished and deep black throughout; beak in
the male thick, very strongly sculptured, straight, becoming slightly
arcuate in about apical half, as long as the prothorax, the antenne
at four-sevenths, the club extremely slender, fully three times as
long as wide, as long as the four preceding joints; prothorax between
a fourth and third wider than long, the sides subparallel and very
feebly arcuate, rapidly rounding at apical third, becoming subtrans-
verse to the notably long tubular apex, which is half as wide as the
base; punctures not very coarse, shallow and well separated, with a
submedian elongate impunctate spot at each side near outer fourth
and an entire impunctate median line; base very obtusely and feebly
cuspidate medially, the scutellum smooth flat and quadrate; elytra
three-fourths longer than wide; only slightly wider than the pro-
thorax and more than twice as long, with rather prominent humeral
swellings, the sides parallel and straight, gradually converging and
broadly, circularly rounding behind, the grooves very moderate;
intervals three to nearly four times as wide as the grooves, the
punctures subtransverse, moderately strong, confusedly subserial
and not dense; abdominal punctures, fine, not close, the abdomen
strongly impressed medially at base in the male; anterior coxe
separated by rather less than half their width. Length (o") 5.8 mm.;
width 2.25 mm. North Carolina (Southern Pines),—Manee.
nimius n. sp.
BARIN 473
Elytral grooves coarser, more or less distinctly crenate, at least in part;
OG WAGE ae cer cre Ae ia ie Pare ee iahedalte POM awe ld ole mere Whe eae 5
5—Body oblong, convex, shining, deep black, the legs piceo-rufous;
beak in the male nearly as in the preceding in form, thick, deeply
and strongly sculptured, about as long as the head and prothorax,
the antenne beyond the middle, shorter than in nimius; prothorax
shorter, two-fifths wider than long, the sides parallel. evenly and
distinctly arcuate, rapidly rounding in apical fourth, becoming
subtransverse to the long tubular apex, which is less than half as
wide as the base; punctures small and moderately separated,
gradually larger, deeply and rugulately coalescent laterally, the
smooth median line narrow and not entire, the discal smooth spots
of the preceding wanting; elytra three-fifths longer than wide,
barely at all wider than the prothorax and evidently more than
twice as long, the humeral callus distinctly prominent; sides just
visibly converging and very feebly arcuate, gradually more rounding
behind to the broad and obtusely rounded apex; grooves deep,
feebly crenulate basally; intervals two and one-half to three times
as wide as the grooves, the punctures fine, feeble and loosely con-
fused throughout the surface; abdomen rather feebly impressed
medio-basally, the punctures more numerous than in mimius.
Length (oc) 4.2 mm.; width 1.6 mm. North Carolina (Southern
Pee ee SO OMEe Tk EIS SS CO eRe PAL aT atromicans n. sp.
Body broadly oblong-suboval, convex, less shining, faintly alutaceous,
black, the legs obscure rufous; beak in the female cylindric and
rather slender, distinctly and subevenly arcuate, finely punctulate
and as long as the head and prothorax, the antenne at the middle;
prothorax fully two-fifths wider than long, the sides sensibly con-
verging from the base and feebly arcuate, more so basally, rather
rapidly but evenly rounding in apical fourth to the tubulate apex,
which is distinctly less than half as wide as the base; surface notably
convex, the punctures moderate, separated by their own widths,
gradually closer and stronger laterally, longitudinally rugose at the
sides, without discal smooth spots, the impunctate median line
distinct though obsolete anteriorly; scutellum quadrate, flat, not
very small; elytra two-thirds longer than wide, very slightly wider
than the prothorax and much more than twice as long, with very
moderate humeral prominences; sides parallel, evenly and moder-
ately arcuate, obtusely and circularly rounded behind; grooves
decidedly coarse, finer suturally behind, almost everywhere strongly
crenate; intervals two to two and one-half times as wide as the
grooves, with fine and loosely confused punctures. Length (2)
4.3mm.; width1.8mm. Florida (Enterprise)...... promptus n. sp.
6—Form oblong, convex, moderately shining, black, the tibie and tarsi
piceous; small slender squamules more abundant and distinct than
in the preceding species; beak in the male thick, strongly and deeply
sculptured, feebly but very evenly arcuate and as long as the head
and prothorax, the antennz at four-sevenths, the club very narrow
as usual; prothorax transverse, nearly one-half wider than long,
much wider near the middle than at base, the parallel sides strongly,
474
MEMOIRS ON THE COLEOPTERA
subevenly arcuate, strongly converging in apical fourth to the long
tubulate apex, which is distinctly less than half as wide as the base;
punctures not very coarse but deep and close-set, longitudinally
rugose laterally, with a smail elongate vacant spot at each side near
outer fifth, the smooth median line only visible centrally; scutellum
quadrate, impressed along the middle and more emarginate behind
than in the preceding species; elytra three-fifths longer than wide,
somewhat narrower than the prothorax and barely twice as long,
with moderate humeral callus; sides subparallel and feebly arcuate,
gradually more arcuate behind to the broadly obtuse and circularly
rounded apex; grooves deep and abrupt, not at all crenulate;
intervals three times as wide as the grooves, with fine and rather
close-set but loosely confused punctuation. Length (o’) 4.2 mm.;
width 1.72 mm. North Carolina (Southern Pines),—Manee.
inflaticollis n. sp.
Form oblong, more parallel, convex, black, the elytra feebly picescent,
the legs and antenne piceo-rufous, moderately shining, the elytra
subalutaceous, the fine sparse squamules distinct, alternately con-
fused and in nearly single line on the elytra; beak in the male
thick, strongly sculptured, straight in basal, arcuate in apical, half,
as long as the head and prothorax, the antenne at four-sevenths;
prothorax fully a third wider than long, the sides parallel, evenly
and rather strongly arcuate, very abruptly, subtransversely rounded
anteriad to the long tubulate apex, which is fully half as wide as the
base; punctures not very coarse but strong, very close-set, less so
basally, larger and more impressed laterally, the median smooth
line distinct; entire surface notably convex as in the preceding;
scutellum quadrate, impressed along the middle; elytra equal in
width to the prothorax and more than twice as long, fully three-
fourths longer than wide, the humeral callus only moderate but
evident; sides feebly converging and broadly arcuate, gradually
more arcuate behind to the obtusely but not very broadly rounded
apex; grooves deep, sharply defined, not at all crenulate; intervals
alternating, two to three times as wide as the grooves; punctures
numerous, strong, confused on the third and fifth, densely so basally,
in uneven single line on most of the others; male with the abdomen
impressed medially toward base, the anterior coxe separated by a
third their width. Length (o') 4.3 mm.; width 1.7 mm. Penn-
SYAVA NIA. Ae Di geu< ond ee ee a eee rotundicollis n. sp.
7—Body elongate and rather narrow, subcylindrically convex, black
throughout, the sparse, minute and setiform squamules everywhere
very indistinct; beak nearly similar in the sexes, deeply sculptured
and rather thick, barely as long as the head and prothorax (o"),a
little longer (9), almost straight, the antennz slightly beyond the
middle in both sexes; prothorax but slightly wider than long, the
sides just visibly converging and feebly subsinuate, rounding rapidly
in apical third to the broad tubulate apex, which is two-thirds as
wide as the base; punctures very moderate and shallow, rather close-
set, sparser basally, the smooth line subobsolete anteriorly; scutel-
lum quadrate, not canaliculate; elytra twice as long as wide, evi-
BARIN 475
dently wider than the prothorax and much more than twice as long,
-the humeral swellings feeble but evident, the sides parallel, feebly
arcuate, gradually rounding behind; strie narrow; intervals four
or five times as wide as the grooves, with fine and sparse, very’feeble
and loosely confused punctuation and approximately single series
of minute and indistinct squamules; male with the abdomen im-
pressed medio-basally; anterior coxe separated by pe eanely less
than half their widths. Length (SM 2) 4.3-4.5 mm.; width 1.5-
1.7mm. Indiana. Four specimens.. i ; ‘tentus n. sp.
Body relatively less elongate and slightly ptouter, "parallel, convex,
slightly shining, black, the legs partially picescent, the sparse fine
squamules forming a single line on the strial intervals; beak in the
male nearly as in the preceding but somewhat shorter, deeply sculp-
tured, thick and nearly straight, the antenne more apical, inserted
at three-fifths; prothorax shorter, about a fourth wider than long,
the sides subparallel, very feebly arcuate, gradually more rounding
before the middle to the tabulate apex, which is three-fifths as wide
as the base; punctures small, unevenly somewhat dense to sparse;
median smooth line uneven, sometimes entire; scutellum flat,
quadrate, more truncate behind and less emarginate than in tentus;
elytra three-fourths longer than wide, barely visibly wider than the
prothorax and evidently more than twice as long, the sides parallel,
feebly arcuate, the apex obtusely rounded; grooves as in tentus;
intervals more equal, four times as wide as the strie, finely, very
feebly and sparsely, unilineately punctulate; anterior coxe separated
by a third their width. Length (o’) 4.0-4.2 mm.; width 1.5-1.6
mm. California (locality unrecorded). Two specimens.
californicus n. sp.
The species described above under the name rotundicollis seems
to make the closest approach to calyus Lec., but, from the descrip-
tion which I drew from the original type, the size in the former is
very much smaller, the prothorax more rounded at the sides and
the elytra not wider than the prothorax and relatively very much
longer.
The last two species of the table are of a peculiar type, strongly
recalling the European Limnobaris T-album, but the sides of the
body beneath completely lack the dense scales characterizing
Limnobaris; the beak is longer, still thicker and straighter, the
antennal club much narrower and the ventral pygidium of the male
more exposed at tip.
Trichodirabius n. gen.
This genus is allied to the preceding in some general characters,
but differs radically in others; the prothorax, for example, is not so
476 MEMOIRS ON THE COLEOPTERA
abruptly or strongly tubulate at apex, often in fact without distinct
trace of constriction, and the body is conspicuously clothed with
slender white scales, almost uniformly distributed above, but more
rounded and becoming denser toward the sides beneath. The
antenne are almost similar, but the club is smaller and not so
attenuate. The beak is strongly sculptured and rather thick in the
male, much longer, nearly smooth and cylindric in the female. The
type of Trichodirabius is Centrinus canus Lec., from Florida, and
the Texan Centrinus longulus Lec., of which I now have a male
and female from Brownsville, also belongs here. The following is a
hitherto undescribed species:
*Trichodirabius indutus n. sp.—Elongate-oval, convex, deep black
throughout, alutaceous, clothed closely above with linear white scales,
confusedly and closely arranged on all the strial intervals, slightly
separated beneath, but narrowly dense along the sides of the body;
beak in the female long, cylindric, smooth, black and evenly, moderately
arcuate, abruptly squamose at base and slightly longer than the head and
prothorax; the antenne slightly behind the middle and black; pro-
thorax between a fourth and third wider than long, the sides feebly
converging, broadly and subevenly arcuate to a slight apical sinus,
defining the feebly subtubulate apex, which is fully half as wide as the
base; punctures moderately strong, close to well separated, the smooth
median line distinct and entire; scutellum flat, quadrate and nude;
elytra fully four-fifths longer than wide, with parallel and arcuate sides,
gradually obtusely rounding behind, at the middle slightly wider than
the prothorax, evidently more than twice as long; strie moderate, dis-
tinct by reason of abrupt partings of the vestiture; intervals alternating
somewhat, two to three times as wide as the striae, finely, unevenly and
loosely punctulate. Length (2) 3.9-5.0 mm.; width 1.4-1.8 mm.
Mexico (Vera Cruz),—Wickham. Four specimens.
The antennal club is relatively very small, oval, the first two
funicular joints elongate, the anterior coxe separated by nearly
their own width, the third and fourth abdominal segments glabrous
in anterior half, somewhat as in Trichobaris, and the femora are as
conspicuously albido-squamulose as the median parts of the under
surface. This species is allied to longulus Lec., but is more elongate
and has denser punctuation and vestiture; my four specimens are
females.
Barilepis n. gen.
The body in this genus is abbreviated, oblong-suboval, densely
clothed with large scales above and beneath, the beak rather short,
- BARINZE 477
arcuate, the antenne also somewhat short, with relatively large,
stout and ovate 4-jointed club, which is as long as the preceding
six joints of the funicle; the first funicular joint is nearly as long
as the next four; the anterior coxze are separated by more than
their own width, with flat prosternum, unarmed in the male; the
scutellum is quadrate or narrower and nude. There are three
species at hand, of which Centrinus griseus Lec., may be regarded
as the type; they can be described as follows from the female:
Prothorax larger, only a fourth wider than long. Body stout, oval, con-
vex, piceous, with rufous legs; scales above almost white, dense on
the prothorax, especially toward the sides, generally in single line
on the strial intervals, irregularly doubled on the second and third
and toward base of the fifth, close-set beneath; beak fully as long
as the head and prothorax, cylindric, strongly arcuate and feebly
sculptured, with the antennz rather behind the middle; prothorax
somewhat coarsely, deeply and densely punctate, with narrow and
incomplete median smooth line, the sides parallel, slightly arcuate,
rounding before the middle to the feebly constricted apex, which is
three-fifths as wide as the base; basal lobe a third the total width;
elytra subparabolic, a fourth longer than wide, obtuse at apex,
slightly wider than the prothorax and only four-sevenths longer,
the grooves rather coarse. Length (9) 3.0 mm.; width 1.35 mm.
PRrePER AS ANGER ECIN) es oe od the aleve DL a sie ninvn er atehaln cate eevee grisea Lec.
Prochotax Shorter and, more, transVerse. . ..6).6 2c. so See ees oslo a ole 2
2—Elytra evenly parabolic, not very obtuse, being somewhat strongly
rounded behind; body oblong-oval, convex, piceous, the elytra and
legs more rufous; scales above yellowish, large and broadly dense
toward the pronotal sides and in a broad medial area, elsewhere
smaller and less conspicuous; on the elytra they are dense and con-
fused on the second, third and thence on the alternate intervals to
the sides, irregularly uniseriate on the others; they are close and
conspicuous beneath, fine and indistinct on the pro- and mesopleura;
beak (o7) arcuate, rather thick, more punctate and not longer than
the head and prothorax, or (Q ) longer, less stout and smooth except
basally; antennz at three-fifths (o”) ora little beyond the middle (9 );
prothorax two-fifths wider than long, the parallel sides distinctly and
subevenly arcuate, more oblique anteriorly to the unconstricted
apex, which is half as wide as the base, the basal lobe as in grisea;
elytra a third longer than wide, slightly wider than the prothorax
and four-fifths longer, the grooves rather coarse; male with the
abdomen feebly impressed medially near the base. Length (o 2)
3.0-3.2 mm.; width 1.25 mm. Arizona (locality unrecorded).
PWG ea erates tere MING ido ore ce apacheana n. sp.
Elytra with the sides only feebly oblique and slightly arcuate to the
very broadly rounded and obtuse apex; outline oblong, rather stout;
color piceous-black, the legs obscure rufous; scales above large,
pale yellowish and dense, slightly less so just within the lateral
478 MEMOIRS ON THE COLEOPTERA
dense pronotal areas, dense on the strial intervals, narrowly on the
outer intervals as well as the first and fourth; beneath they are
distinct but widely separated, dense on anterior two-thirds of the
met-episterna, evident on most of the pro- and mesopleura; beak
strongly, evenly arcuate, moderately slender, black, feebly punctu-
late and not longer than the prothorax, the antenne barely beyond
the middle; prothorax a third wider than long, subinflated before
the middle, the sides parallel and moderately arcuate, oblique an-
teriorly to the unconstricted apex, which is slightly more than half
as wide as the base; punctures moderate and dense, the smooth
line narrow and incomplete; elytra but little more than a fourth
longer than wide, slightly wider than the prothorax and three-fifths
longer, the grooves not so coarse as in the two preceding. Length
(2) 3.3 mm.; width 1.28 mm. Virginia (Fort Monroe).
virginica n. sp.
These species adhere closely to a common type but I believe them
to be distinct as described. Individually, they seem to be rare.
Sibariops n. gen.
The species of this genus, the type of which is Centrinus confinis
Lec., are very numerous, but only a few of them have been described.
The general structure is not very unlike Divabius, but the body is
smaller, frequently minute, the outline sometimes more abbreviated
and the surface more or less convex. On segregating the species, a
marked peculiarity of habitus is seen to pervade the genus, and it
differs from any of the preceding members of the Limnobaris series
in having a slender, subporrect spine before each anterior coxa and a
deep prosternal pit between the spines; these however often become
obsolete, in which case the deep rounded pit also disappears. The
second funicular joint is elongate, though much smaller than the
first, and the club is more or less narrowly oval, with large pubescent
basal joint.
In drawing up the following table the specific descriptions can
be curtailed by not repeating characters that are virtually uniform
throughout. The vestiture is always sparse, consisting of fine
and more or less inconspicuous squamules, usually uniseriate on
the strial intervals, and but seldom much more conspicuous and
never squamiform on the under surface; the color of the body and
legs may be known to be black, except where the coloration is
specially stated:
Pronotal punctures never very coarse but deep and notably close-set,
SOMETIMES GENSE. i .-.\4)s’ ose) os ale = ow maha ape hac npee Ce eerie ne ete 2
BARINAE 479
Pronotal punctures more or less sparse or at least well separated... ..10
a—Legs black as usual.) co. 2 i ied ccs ae see tee teers renee 4
Legs piceo-rufous........----ee ee 1 REE Gee ey Ree cae ian 9
3—Interstitial punctures confused on some or all of the intervals......4
Interstitial punctures in even or uneven, at least approximately, single
series almost throughout... .......0. cece seer erence e tee 6
Elytral punctures moderately strong and dense throughout. Form
rather broad but oblong-oval; beak shorter than the prothorax in
both sexes, feebly arcuate, more slender and smoother in the female
as usual; antennz inserted near three-fifths (o"), or just behind the
middle (2); prothorax but slightly shorter than wide, the parallel
and feebly arcuate sides oblique in less than apical third, the apex
feebly constricted and fully half as wide as the base; punctures
deep and very close, the smooth median line distinct, entire; elytra
a little wider than the prothorax and very nearly twice as long, ob-
tusely rounded at apex; grooves moderately coarse, closely punctate,
not crenate; intervals from less to more than twice as wide as the
grooves; prosternal spines of the male long, slender and porrect.
Length (o' 2) 3.0-3.4 mm.; width 1.2-1.4 mm. Indiana, Missis-
sippi (Vicksburg) and Nebraska. Nine specimens.. .confusa Boh.
Elytral punctures coarser, similarly dense. Form more broadly oblong-
oval and larger in size, black throughout, subalutaceous, the fine
gray squamules rather sparse but everywhere evident, confused
throughout on the elytra; beak in the female very nearly as long as
the prothorax, very smooth and slender, feebly tapering, rather
strongly arcuate, the antenne slightly behind the middle; pro-
thorax larger than in confusa, very slightly wider than long, the
subparallel and feebly arcuate sides more rapidly and more trans-
versely rounded just behind the tubulate apex, which is fully half
as wide as the base; sculpture similar, except that the punctures are
a little coarser; elytra longer and with more converging arcuate
sides, three-fifths longer than wide, the apex similarly not very
obtuse and with somewhat individually distinct tips, distinctly
wider than the prothorax and almost twice as long; striz similar;
interstitial sculpture dense and much coarser and deeper. Length
(2) 3.65 mm.; width 1.45 mm. Kansas (locality unrecorded).
kansana n. sp.
Elytral punctures more loosely confused, having a tendency to form
single series on some of the intervals......-----++seeeseer etree 5
5—Interstitial punctures nearly as strong as in confusa, the beak in the
female unusually arcuate. Body more ventricose, with relatively
wider elytra; beak in the female slightly longer than the prothorax,
slender, smooth and strongly arcuate, slightly tumid and more
punctulate at base, the antenne barely behind the middle; pro-
thorax shorter, a fifth wider than long, the parallel sides more arcu-
ate, more gradually oblique anteriorly, the feebly tubulate apex
rather more than half as wide as the base; elytra shorter, fully a
fifth wider than the prothorax and twice as long, obtusely sub-
parabolic, with moderate humeral callus; grooves moderately
coarse, not very deep; intervals twice as wide as the grooves, the
480 MEMOIRS ON THE COLEOPTERA
punctures a little smaller and sparser than in confusa, those of the
third and fifth tending to form single lines, except basally. Length
(2) 3.0 mm.; width 1.3mm. Mississippi (Vicksburg).
latipennis n. sp.
Interstitial punctures nearly as in confusa and almost equally dense but
confused only on the second, third and fifth intervals, forming even
single close-set series on all the others. Body oblong-oval, moder-
ately convex, dull above throughout and with small but evident
squamule, more shining and with whiter and more evident though
fine sparse squamules beneath; beak in the male rather thick, slightly
tapering, strongly but finely sculptured, arcuate, straighter basally
and nearly as long as the prothorax, the antenne near three-fifths;
prothorax slightly wider than long, the sides gradually converging,
broadly and evenly arcuate, parallel behind about the middle, the
apex only feebly constricted and rather more than half as wide as
the base; sculpture as in confusa; elytra notably short, a third
longer than wide, very little wider than the prothorax and nearly
four-fifths longer, the sides parallel, rounding in apical half, the
humeral callus moderate; grooves rather coarse; intervals from less
to more than twice as wide as the grooves; male abdomen distinctly
impressed medio-basally, the prosternal spines extending to the
thoracic apex. Length (oc) 2.7 mm.; width 1.2 mm. ‘North
Carolinay(Ashevalle)taWaaw eh. Senet Poe ee obesella n. sp.
Interstitial punctures notably fine, well separated................... 6
6—Form oblong-oval, moderately shining; beak in the female as in
latipennis, but not quite so arcuate and a little shorter, though
somewhat longer than the prothorax, the antenne similar; pro-
thorax still shorter, fully a third wider than long, the sides more
evenly arcuate from base to the rather strongly tubulate apex,
which is much more than half as wide as the base; sculpture nearly
similar, the smooth median line entire; elytra narrower, obtusely
subparabolic, with feebler humeral prominences, slightly wider than
the prothorax and fully twice as long; grooves less coarse; intervals
somewhat more than twice as wide as the grooves; punctures fine,
confused throughout basally but tending to form finer single series
posteriorly. Length (9) 2.7mm.; width1.15mm. Florida (Enter-
MEISE) Rie lot 8 Fie ea a ae ak A a tubifera n. sp.
F m more elongate, somewhat more shining; beak in the male rather
thick, feebly arcuate, dull, distinctly sculptured and not quite as
long as the prothorax, the antenne at four-sevenths; prothorax
natrower and longer, about as long as wide, the sides very evenly
and moderately arcuate in anterior, becoming less so and parallel
in basal, half, the moderately constricted apex much more than half
as wide as the base; punctures nearly similar, the smooth line barely
attaining the apex; elytra fully a fourth wider than the prothorax
and twice as long, the sides parallel and nearly straight behind the
feeble humeral prominences, rounding in about apical half to the
obtuse apex, with traces of feeble subapical Centrinogyna-like
sinuation; striz and punctures nearly as in the preceding; abdomen
of the male with a deep rounded impression medially at base, the
BARIN4E 481
porrect prosternal spines slender, shorter than in confusa. Length
(@) 3.3 mm.; width 1.2 mm. Illinois (southern).. .illiniana n. sp.
6—Prothorax nearly as long as wide....... 6... cece eee eee eee e eee 7
Prothorax much more abbreviated, distinctly shorter than wide....... 8
7—Body small, elongate-oval, convex, feebly shining; beak notably
short in both sexes, dull and sculptured, nearly straight, but arcuate
apically (o”), or very slender, slightly and evenly arcuate and nearly
smooth (@?), the antenne at four-sevenths (0) or slightly behind
the middle (2); prothorax with the sides feebly converging, grad-
ually a little more arcuate apically, the feebly constricted apex
much more than half as wide as the base; punctures moderately
close-set and distinct, the median smooth line not quite attaining
the apex; basal lobe short and broadly rounded; scutellum small,
nude as usual; elytra parabolic, a little wider than the prothorax
and about twice as long; grooves moderate but deep, not crenulate,
the intervals twice as wide as the grooves to somewhat less; pro-
sternum of the male with a narrow anterior fossa, devoid of any
trace of spines, the abdomen with rounded basal impression. Length
(7 Q) 2.2-2.4 mm.; width 0.9-1.1 mm. Florida (Enterprise).
ive Soccwmelise: oft ew ere cece Cee e erent esse fraterculus Csy.
’ Body larger and stouter, more oblong-oval and less convex, subaluta-
ceous; beak in both sexes nearly as in the preceding; prothorax
larger and broader, not quite so nearly as long as wide, the sides
similar, the more distinctly tubulate apex slightly more than half
as wide as the base; punctures and smooth median line similar;
elytra much broader, more ovulate, with similarly very feeble
humeral prominences, distinctly wider than the prothorax and about
twice as long; grooves, intervals and sculpture nearly similar, the
slender setiform squamules more numerous; prosternum of the male
with a very deep circular pit and two slender and well developed
porrect spines, the abdomen more acutely and narrowly impressed
at the middle of the rather strongly punctured first segment. Length
(7 2) 2.6-2.8 mm.; width 1.15-1.25 mm. Florida, Alabama and
New Jersey (Newark). Seven specimens..........- diffidens n. sp.
Body more narrowly oval and rather more convex, feebly shining; beak
in the male short, not as long as the prothorax, moderately thick,
more shining and less closely punctate than usual in that sex, similar
in form to that of the preceding and with similar small dorsal
tumidity adjoining the feeble transverse impression of the head;
prothorax as long as wide, longer and narrower than in difidens, the
sides gently rounding, becoming straighter and subparallel behind
the middle, the subtubulate apex narrower, not more than half as
wide as the base; punctures somewhat more separated, the smooth
median line biabbreviated; elytra narrower and with the similarly
feebly oblique sides less arcuate, distinctly wider than the prothorax
and not quite twice as long, the subuniserial to confused punctures
closer and evidently stronger; intervals twice as wide as the grooves
to distinctly less; male with prosternal porrect spines and deep
perforate fovea, the deep medio-basal impression of the abdomen
T. L. Casey, Mem. Col. IX, Feb. 1920.
482 MEMOIRS ON THE COLEOPTERA
much longer, extending almost through the second segment. Length
(oo) 2.8 mm.; width 1.15 mm. New York (locality unrecorded).
Onevexam plese 2.2) 4.2. selcttstes eee oles Geers fultonica n. sp.
8—Form narrowly oblong-oval, not very convex, rather dull in lustre;
beak in the female very slender, evenly arcuate, as long as the
prothorax, smooth, squamulose at each side above basally, the
antenne at the middle; prothorax a fifth wider than long, the sides
parallel in basal half, rounding gently thence to the subtubulate
apex, which is three-fifths as wide as the base; punctures small but
close-set, the narrow smooth line not attaining the apex; elytra
narrowly subparabolic, almost one-half longer than wide, rather
obtusely rounded at apex, only slightly wider than the prothorax
and somewhat more than twice as long; grooves moderate, deep;
intervals about twice as wide as the grooves, each with a single
regular series of distinct punctures. Length (9) 2.25 mm.; width
0.85 mm. Mississippi (Vicksburg). One example.....#gra n. sp.
Form broader, oblong-suboval, with wider and relatively shorter elytra,
slightly more shining; beak (o') sparsely punctate and shining,
of the usual form and much shorter than the prothorax, or (9)
equal to the latter, slender, smooth and more arcuate; antenne well
beyond or slightly behind the middle respectively; prothorax a
fourth to fifth wider than long, the sides as in the preceding, the
subtubulate apex about three-fifths as wide as the base; punctures
stronger and less close-set than in the preceding, the smooth line
not attaining the apex; elytra a fourth longer than wide, the sides
less oblique and more arcuate with the apex obtusely rounded,
distinctly wider than the prothorax but not quite twice as long, the
sculpture similar, except that the punctures of the interstitial series
are finer and less close-set; abdomen of the male strongly impressed
medially through the first segment, the prosternum not deeply
fossate and with two very short and slender, porrect spines. Length
(7 Q) 2.3-2.45 mm.; width 0.95-I1.0 mm. North Carolina (Ashe-
Villevand "Black Mise.) 90 Meese ers ae oe eae ashevillensis n. sp.
9—Body oblong-oval, moderately stout, feebly shining, piceous-black;
beak in the female very slender, moderately arcuate and in great
part smooth, unusually short, not as long as the prothorax, feebly
swollen above at base and more punctulate; antenne barely behind
the middle; prothorax a fifth or sixth wider than long, the sides
broadly arcuate, becoming parailel behind the middle, the short
tubulate apex slightly more than half as wide as the base; punctures
moderate, close-set, the smooth line not quite entire; elytra obtusely
parabolic, slightly wider than the prothorax and twice as long;
strie moderate, the intervals two or three times as wide as the
grooves, minutely, loosely and more or less confusedly punctulate,
the punctures occasionally forming partial single series. Length
(9) 2.8 mm.; width 1.15 mm. Colorado...... curtulirostris n. sp.
Body much larger and stouter, oblong-suboval, alutaceous, black; beak
in the male three-fourths as long as the prothorax, sparsely punctate,
straight, bent at the point of antennal insertion near four-sevenths;
prothorax a fifth wider than long, the sides parallel, broadly arcuate,
BARIN 483
more rapidly rounding near the apex, which is tubulate and half
as wide as the base; punctures moderately small, separated medially
by nearly twice their widths, gradually dense and longitudinally
subrugulose laterally; smooth line distinct; elytra evenly parabolic,
a third longer than wide, distinctly wider than the prothorax but
only three-fourths longer; grooves deep, shining; intervals twice
as wide as the grooves, with fine and well spaced punctures, loosely
confused more or less on all the intervals; male abdomen distinctly
impressed medio-basally, the prosternum with a very deep but
unusually small perforation and two porrect spines, extending
beyond the apex. Length (o") 3.35 mm.; width 1.45 mm. _ Florida.
surrufipes n. sp.
10—Body oval or subventricose, smooth, the pronotal punctures small
iin ter nMen Wl COUS PIC MOLISs 5c x cycle mare tere eceteinceas eciy eid eideerg! ake satcssiare II
Body narrow, parallel, the pronotum with rather coarse and conspicuous
punctuation, the vestiture of slender squamules more or less distinct;
size always very small; beak strongly sculptured in both sexes.. . 32
11—Vestiture of slender sparse squamules distinct on the elytra... ..12
Vestiture very fine, sparse and inconspicuous, sometimes distinct on the
EUS 10 DTT Aa Tag tee te ogee 81 eae oS 15
12—Body shorter, smaller in size and subventricose................ 13
Body larger, elongate-oval in outline; beak more elongate......... eee |
13—Body short and stout, rather shining and convex, deep black through-
out; beak in the male of the usual form, moderately thick and
sculptured, not as long as the prothorax, the antennz at four-sev-
enths; prothorax a fourth wider than long, with the sides broadly,
subevenly arcuate, becoming parallel and less arcuate basally, the
subtubulate apex half as wide as the base; punctures shallow, well
separated, becoming fine near the entire smooth line, the squamules
feebly evident laterally; elytra barely a fourth longer than wide,
broad, the sides feebly oblique and distinctly arcuate,with the apex
broadly obtuse, a fifth wider than the prothorax and four-fifths
longer, the humeral prominences moderate but distinct; grooves
narrow, deep and with small distinct punctures, the intervals
between two and three times as wide as the grooves, finely, rather
sparsely and confusedly punctate throughout and with the slender
squamules whitish, rather close-set and conspicuous, in single lines
except on the second and third; squamules beneath very small,
slender and sparse but whitish and evident; prosternum of the male
with a large and very deeply perforate oval fossa and two well
developed porrect spines, extending beyond the head; abdominal
impression very faint. Length (oc) 3.0mm.; width1.3mm. Texas
User ee ihe) ae haan 4 ad cant oc wise) tai See «oa REE mundula n. sp.
Body more elongate and with relatively still smaller prothorax, the elytral
squamules not quite so distinct though evident, becoming rather
conspicuous at base, indistinct on the pronotum, notably evident
throughout beneath though sparse; color black, the lustre some-
what shining; beak in the female very slender, smooth, feebly
arcuate and as long as the head and prothorax, with a few punctures
and fine squamules at each side of the base above, the antenne
484 MEMOIRS ON THE COLEOPTERA
slightly behind the middle; prothorax small, a fifth wider than
long, the sides evenly and moderately arcuate, becoming gradually
parallel basally, the distinctly tubulate apex more than half as
wide as the base; punctures moderate, shallow, distinctly separated,
with a smooth discal spot at each side, the impunctate median line
not attaining the apex; elytra not quite one-half longer than wide,
a third wider than the prothorax and much more than twice as long,
the humeral callus distinct; sides parallel and nearly straight,
rapidly rounding in about apical half, the apex strongly rounded;
grooves deep; intervals more than twice as wide as the grooves,
with fine and well separated, uniserial subtransverse punctures and
single lines of squamules, more confused on the second. Length
(2) 3.35 mm.; width 1.3 mm. North Carolina (Black Mts.),—
Beitenmiillers Sek cco: Go ee Bees ene Ses eae eee tee caudex n. sp.
14—Form elongate-oval, convex, black throughout and subalutaceous;
beak in the female long, rather slender and feebly, evenly arcuate,
moderately punctate and finely subsulcate, longer than the head
and prothorax, the antenne about at the middle; prothorax nearly
as long as wide, the sides broadly, subevenly arcuate, becoming
straighter and parallel basally, the subtubulate apex fully half as
wide as the base, the punctures fine and sparse, rather coarse and
rugulose at the sides, where the very inconspicuous squamules become
more distinct; median smooth line entire; elytra one-half longer
than wide, only very slightly wider than the prothorax and about
twice as long, the humeral prominences feeble; sides only feebly
oblique and subevenly, distinctly arcuate to the broadly rounded
and obtuse apex; grooves deep and conspicuous; intervals twice as
wide as the grooves, the punctures moderately small, strong and
distinct, well spaced in single or narrowly confused lines, the sete
small and gray, not close-set but very evident, in single, sometimes
irregular lines, more confused on the third; squamules beneath
small, sparse and very inconspicuous. Length (2) 3.75 mm.;
width 1.5mm Rlotida ((2aterprise) sine: erat: incolumis n. sp.
Form nearly similar but larger and relatively stouter, black, similarly
alutaceous, the vestiture similar, except that the sete of the elytra
are more confused on most of the intervals, smaller and less distinct,
except at base throughout the width, where the whitish hair-like
squamules become close and rather conspicuous; beak in the female
long, slender, smoother than in the preceding, still somewhat longer
and almost perfectly straight, much longer than the head and pro-
thorax, the antenne at the middle, slender, with still longer and very
slender club; prothorax a sixth wider than long, the subevenly
arcuate sides becoming parallel at base, the feebly constricted apex
half as wide as the base; punctures well separated, very fine medially,
stronger and dense laterally, the smooth line abbreviated ‘anteriad;
basal lobe similarly small and feeble; scutellum narrow, nude,
emarginate at tip; elytra obtusely ovoidal, slightly wider than the
prothorax and barely twice as long; grooves deep and conspicuous;
intervals twice as wide as the grooves to slightly more, sparsely,
BARIN 485
finely and in general confusedly punctate. Length (9) 4.0 mm.;
width 1.65 mm. Mississippi (Vicksburg). One specimen.
definita n. sp.
15—Form narrowly and subevenly oval, notably elongate and almost
GMEERANTO pote crete ak aaa oa olsns cake mg, x xp tan caste 7d of pete Be Ree 16
Form stouter and, even when small and less stout, evidently subventri-
ChE a cass ee oh a ered Riese aid ac a: WB edness oh ba inde We einalia Sea tea Soe 18
16—Size larger, alutaceous, the elytra slightly more shining. Convex,
deep black; beak in the female feebly arcuate, not quite as long as
the head and prothorax, nearly smooth, punctulate closely toward
base; prothorax nearly as long as wide, the sides parallel, feebly
arcuate, rounding apically, the subtubulate apex much more than
half as wide as the base; punctures rather small, shallow and widely
separated, closer and stronger laterally; elytra one-half longer than
wide, the sides parallel and feebly arcuate, rapidly obtusely, ogivally
rounded behind, barely visibly wider than the prothorax and fully
twice as long; grooves deep; intervals between two and three times
as wide as the strie, with single series of small and moderately
separated punctures. Length (9) 3.4 mm.; width 1.28 mm.
Rt ates ers Pe suc nok ol x sautdey nih tees ad alae ah seminitida Csy.
Size smaller, the entire surface polished and deep black............. 17
_ 17—Body narrow, parallel, convex, subglabrous; beak in the male rather
thick, feebly, subevenly arcuate, rather shining, not densely though
distinctly sculptured, about as long as the prothorax, the antenne
barely beyond the middle; prothorax about as long as wide, the
sides broadly, moderately arcuate, becoming gradually parallel in
almost basal half, the subtubulate apex broad, two-thirds as wide
as the base; punctures small, sparse; smooth median line obliterated
from slightly before the middle; elytra parallel, three-fifths longer
than wide, barely visibly wider than the prothorax and more than
twice as long, the sides nearly straight, subcircularly rounded in
about apical third; stria deep but not coarse; intervals more than
three times as wide as the grooves, with single series of small and
widely spaced punctures; male abdomen feebly impressed medially
at base, the prosternum not perforate and with very short, broadly
angulate elevations in place of spines. Length (o") 2.85 mm.;
width 1.1 mm. Florida (Enterprise)............. mediocris n. sp.
Body smaller, parallel, moderately convex, subglabrous, the legs piceous;
beak in the male rather thick, very short, feebly, subevenly arcuate,
slightly shining though evidently sculptured, not as long as the
prothorax, the antenne near three-fifths, piceo-rufous; prothorax
nearly a fourth wider than long, rather wider at the middle than at
base, the sides parallel and feebly, subevenly arcuate, the somewhat
abruptly tubulate apex three-fifths as wide as the base; punctures
fine and sparse, very minute anteriorly; elytra two-fifths longer than
wide, barely visibly wider than the prothorax and more than twice
as long, with small but evident humeral callus; sides parallel and
nearly straight, gradually rounding behind the middle; grooves fine;
intervals four times as wide as the grooves, each with a single series
of very minute, remotely separated punctures; male abdomen
486 MEMOIRS ON THE COLEOPTERA
impressed medially at base, the prosternum unarmed, feebly im-
pressed along the middle. Length (o7) 2.1 mm.; width 0.8 mm.
Districttot) Golamibiary |. stesa:: aa eise mere eae lucidula n. sp.
18—Size moderate to rather large, the prosternum with well defined
ante-coxal spines am be males nO i5 i ie aie ae 19
Size very small, the spiniform processes wanting or very feebly de-
VElOPed ine nema re eo ee AY aan Ce, Oe 28
19—Body not very evidently ventricose, the elytra but little wider than
the prothorax er 225: 2; ht aie Se ie ee De eee eee 20
Body very evidently subventricose, the elytra decidedly wider than the
prothorasc Ge cre teh ook Ne se en ne at a orl Aen ge 24
20—Prothorax subinflated, widest just behind the middle, the sides
subparallel and broadly, subevenly arcuate. Body very stout;
convex, deep black, rather shining; beak in the female much longer
than the head and prothorax, nearly straight, evenly and but just
visibly arcuate, nearly smooth; prothorax fully a fifth wider than
long, the apex evidently constricted and slightly more than half as
wide as the base; punctures fine and sparse; smooth line lost
anteriorly; elytra two-fifths longer than wide, slightly wider than
the prothorax and not quite twice as long, with feeble humeral
callus; sides parallel, gradually and obtusely, ogivally rounded in
apical half; grooves deep; ‘intervals alternating in width, from more
than two to more than three times as wide as the grooves, with small
but distinct, sparse punctures, alternately in single line and con-
fused. Length (9) 3.6 mm.; width 1.5 mm. Texas (Columbus).
ebena Csy.
Prothorax not inflated, widest at or near the base.................. Bi
21—Prothorax with the sides converging from the base............. 22
Prothorax with the sides parallel and feebly, subevenly arcuate, gradually
a little more so toward the briefly subtubulate apex; integuments
throughout rather shanine: sees). Ss wer se pan enna tee re 23
22—Prothorax but little shorter than wide, the converging sides becoming
gradually and but slightly more arcuate anteriorly, the tubulate
apex fully half as wide as the base, black throughout; beak evenly
and very feebly arcuate in both sexes, thick (co), strongly sculptured
and rather sulcate, as long as the head and prothorax, or (@), very
thin, smoother and distinctly longer; antenne very slightly behind
the middle (@) or at four-sevenths (o’); prothorax a fifth wider
than long, the sides moderately and subevenly arcuate, slightly
converging throughout; punctures distinct, well separated, grad-
ually minute toward the imperfect median smooth line; elytra two-
fifths longer than wide, only slightly wider than the prothorax and
fully twice as long, parallel, obtusely and ogivally rounded in about
apical half; grooves deep, very feebly subcrenulate basally; intervals
only just visibly alternating, flat, with punctures as in the preceding
but very much more minute; male abdomen feebly impressed
medio-basally, the prosternal UNS extending rather beyond the
apex. Length (o' 9) 3.5-3. 75 mm. ; width 1.33-1.4 mm. Missis-
sippi (Vicksburg). Three apettaienies: : ; .corvina n. sp.
Prothorax much shorter than wide, the feebly éonverpitiz sides evenly
BARIN 487
and very feebly arcuate, rapidly rounding and becoming more
transverse in apical fourth to the short but strongly tubulate apex,
which is fully half as wide as the base; color black, the surface less
convex than in corvina, moderately shining; beak in the female
slender, much shorter than in corvina, barely as long as the prothorax,
only just visibly arcuate and nearly smooth, the antenne submedial;
prothorax fully a third wider than long, the punctures distinct,
rather well separated, the smooth line not entire; elytra relatively
long, more than one-half longer than wide, only slightly wider than
the prothorax and nearly two and one-half times as long; striz
deep, feebly subcrenulate; intervals subequal, about three times as
wide as the grooves, the punctures sparse, minute and subuniserial.
Length (9) 3.2 mm.; width 1.28 mm. Missouri.
longipennis n. sp.
23—Form oblong-oval, rather convex, black throughout, the sparse
setuliform squame of the upper surface rather more evident than
usual in this section; beak in the female slender, smooth, almost
straight and as long as the head and prothorax, the antenne medial;
prothorax a fourth wider than long, the sides gradually a little more
rounding in apical third to the feebly constricted apex, which is
rather more than half as wide as the base; punctures small but
somewhat strong and well separated, the broad smooth line lost
anteriorly; elytra three-sevenths longer than wide, slightly wider
than the prothorax and distinctly more than twice as long, the sides
just visibly converging and very slightly arcuate, obtusely parabolic
in apical third; grooves deep, not at all crenulate and half to a third
as wide as the intervals, which are finely, loosely and unevenly
uniseriately punctate. Length (2) 3.0 mm.; width 1.2 mm.
Missouri (locality unrecorded). One example...... rivularis n. sp.
Form elongate-suboval, smaller and narrower than the preceding, convex,
rather strongly shining, deep black; beak in the female a little
longer, perceptibly but feebly, evenly arcuate, feebly and sparsely
sculptured and slightly longer than the head and prothorax, the
antenne medial; prothorax a fifth wider than long, the sides arcu-
ate, a little more so in apical fourth to the very broad, feebly con-
stricted apex, which is two-thirds as wide as the base; punctures
fine, well separated, the smooth line narrower, not entire; elytra
with nearly obsolete squamule, three-sevenths longer than wide,
slightly though evidently wider than the prothorax and much more
than twice as long, the sides parallel, rounding in apical half, less
obtuse at tip than in the preceding; striz finer but deep, not crenu-
late; intervals fully four times as wide as the grooves, minutely
and loosely, not very evenly uniseriately punctate. Length (@ )
2.7 mm.; width 1.1 mm. Texas (Austin). One specimen, taken
UTR CRW LilGe sil ack Weedle so nce gles sos soe austiniana n. sp.
Form nearly as in rivularis but with the thoracic sides a little less parallel,
being just visibly converging, also more rapidly rounding apically
to the tubulate apex, which is more than half as wide as the base;
beak in the female nearly as in rivularis, but a trifle less slender, in
the male moderately thick, more sculptured, short, not longer than
488
MEMOIRS ON THE COLEOPTERA
the prothorax, the antenne at four-sevenths, where the beak is
gradually and feebly bent; prothorax nearly as in rivularis but
somewhat more finely punctate; elytra two-fifths longer and per-
ceptibly wider than the prothorax and twice as long (o’), or more
(2), the sides parallel, obtusely rounded in nearly apical half;
striz and intervals almost as in rivularis in form and sculpture, but
with the latter slightly convex; male with the abdominal basal im-
pression very faint, the prosternum perforately fossate, with two
very moderate spines, extending but little more than half way to
the apex. Length (10', 49) 2.8-3.1 mm.; width I.15-1.25 mm.
Lonisiana-.(Cowimeton). 4: <5 ic 1ne ke cel heen difficilis n. sp.
24—Male with two short prosternal spines...................00-0-- 25
Male with the prosternal spines long and porrect; body much stouter
TUE ORI So ais cetaie OCA ie co ga a AG Aiea Pt Rar A nee ere cg 2 26
Male without trace of prosternal spines and only feebly impressed. . .27
25—Prothorax much shorter than wide; beak unusually short in both
sexes; body narrow, convex, deep black and somewhat shining;
beak (o') rather thick, evenly, feebly arcuate, dull and densely
sculptured, not as long as the prothorax, or (2), more slender,
feebly arcuate, rather strongly sculptured and about as long as the
prothorax; antenne at four-sevenths (o’) or barely beyond the
middle (2); prothorax between a fourth and third wider than long,
the subparallel and feebly arcuate sides more rounding anteriad,
the tubulate apex much more than half as wide as the base; punc-
tures small and rather sparse, the smooth line not entire; elytra a
little more than one-half longer than wide, much wider than the
prothorax and two and one-half times as long; grooves narrow;
intervals between three and four times as wide as the grooves, with
very fine and remote punctures in single series; male abdomen
distinctly impressed medio-basally, the prosternal pit very deep,
the spines semi-erect. Length (co 2) 2.7-2.85 mm.; width 1.15-
L2ominiey, vlinidianatand Kansas! © 5h. nee me tae puteifera Csy.
Prothorax subcylindric, narrow and as long as wide; beak less abbrevi-
ated; body rather strongly shining, deep black; beak in the male
rather shining, though somewhat closely sculptured, thick, evenly
but barely visibly arcuate and fully as long as the head and pro-
thorax, the antenne near three-fifths; prothorax with the parallel
sides feebly arcuate, slightly more so apically, the tubulate apex
broad, two-thirds as wide as the base; punctures small but rather
deep and distinct, well separated, the smooth line as in the pre-
ceding; surface more shining; elytra shorter, only a third longer
than wide, two-sevenths wider than the prothorax and twice as long,
the parallel and nearly straight sides rounding behind the middle,
the humeral callus feeble; striae moderate, deep; intervals almost
three times as wide as the grooves, with irregularly single series
of fine and very feeble, rather well separated punctures; male with
the abdomen distinctly impressed medially through the first two
segments; prosternum nearly as in the preceding. Length (0%)
2.65 mm.; width 1.15 mm. _ Illinois (locality unrecorded).
sectator n. sp.
BARIN 489
26—Body rather stout, oblong-suboval, convex, deep black, somewhat
shining, a little more so in the male; beak in that sex just visibly
arcuate, strongly sculptured, moderately thick and about as long
as the prothorax, or (9), very slender, similarly very feebly, evenly
arcuate, almost smooth and not quite as long as the head and pro-
thorax; antenne at the middle (9), or at four-sevenths (c');
prothorax slightly shorter than wide, the sides very feebly con-
verging (2) or parallel (co), feebly, subevenly arcuate, gradually
more so anteriorly, the feebly constricted apex half as wide as the
base, somewhat less in the female; elytra only two-fifths longer
than wide, a fifth wider than the prothorax and a little more than
twice as long, parallel, obtusely rounded in apical half; striz moder-
ately coarse; intervals between two and three times as wide as the
grooves, with fine and loose punctuation, generally in single series
but confused on the second, third and fifth, less so in the male,
the intervals subequal in width throughout; male abdomen feebly
impressed medially at base, the prosternum with a deep perforation,
the spines extending far beyond the thoracic apex. Length ( 2)
3.2-3.5 mm.; width 1.25-1.6 mm. Indiana, Illinois and Missouri.
convexula n. sp.
27—Form narrower than in convexula, elongate-oval, convex, feebly, the
elytra more strongly, shining, deep black throughout; beak (0)
only moderately stout and sculptured, straight, bent slightly at the
antennal insertion at three-fifths, as long as the prothorax, or (92),
very slender, nearly smooth, evenly and very moderately arcuate
and distinctly longer than the head and prothorax, the antenne
medial; prothorax slightly shorter than wide, the subparallel sides
broadly arcuate, the subtubulate apex a little more than half as
wide as the base; punctures moderate, well separated, the smooth
line as in the preceding species; elytra almost one-half longer than
wide, a fourth to fifth wider than the prothorax and distinctly more
than twice as long, subparallel, rounding in apical half; grooves
moderate; intervals from two to three times as wide as the grooves,
with single or confused series of small but evident, well separated
punctures; male abdomen broadly impressed at the middle of the
first segment; prosternum féebly impressed. Length (co 2)
2.65-3.1 mm.; width 1.0-1.28 mm. District of Columbia.
concurrens Csy.
20 aaesel hinted ARATE SEOU Gs oe 50 ho ais x ee « oev aera at ied Be w voile 29
ie a EC ie osha an val ad a eI + GRE ETT oe vie © 31
29—Prothorax large, only very slightly narrower than the elytra. Body
oblong-suboval, convex, shining, deep black throughout; beak in
the male rather thick, somewhat closely sculptured, just visibly
arcuate and as long as the prothorax, the antennz near three-fifths;
prothorax between a fourth and third wider than long, the sides
broadly arcuate, becoming nearly straight and parallel in about basal
half; punctures rather strong, moderately well separated, with a
smooth discal spot at each side and a nearly entire smooth median
line; elytra two-fifths longer than wide, evidently more than twice
as long as the prothorax, oblong, subparallel, obtusely though
490
MEMOIRS ON THE COLEOPTERA
gradually rounded behind; strie deep but not very coarse; intervals
between two and three times as wide as the strie, each with a single
line of very distinct, not very small though shallow, moderately
separated punctures; prosternum impressed along the median line.
Length (o") 2.65 mm.; width 1.0mm. North Carolina (Southern
Piirés)\== Manca? de ceng cee Fai ee ee eee erebea n. sp.
Prothorax relatively smaller, much narrower than the elytra......... 30
30—Form oblong, moderately convex, deep black; beak (<) stout, feebly
arcuate, strongly sculptured and as long as the prothorax, or (9),
more slender, feebly arcuate, nearly but not quite smooth and fully
as long as the head and prothorax; antennz at four-sevenths (c*)
or at the middle (2); prothorax a sixth () or a fifth (2) wider
than long, the sides feebly converging and broadly, subequally
arcuate, the very short subtubulate apex three-fifths as wide as the
base; punctures fine, sparse, the smooth line not entire; surface
alutaceous; elytra shining, a third to two-fifths longer than wide, a
fourth wider than the prothorax and much more than twice as long,
parallel and nearly straight at the sides, rounding rapidly in about
apical third; striae moderate, the intervals about three times as wide
as the grooves, each with a single series of minute but evident,
remotely spaced punctures. Length (o' 2) 2.4-2.6 mm.; width
0.85-I.1 mm. Southern Illinois and Missouri (St. Louis). Five
po 2h 10110) | cra a alee igen srt te ORs Neva Vaal neers bite Oh ge amnicola n. sp.
Form oblong, more shining throughout, deep black; beak (2) only
moderately slender and distinctly sculptured, feebly arcuate and as
long as the head and prothorax, the antenne at about the middle;
prothorax small, between a fourth and third wider than long, the
sides parallel, rounding beyond the middle to the tubulate apex,
which is three-fifths as wide as the base; punctures fine and sparse,
the smooth line distinct; elytra more elongate, fully one-half longer
than wide, more than a fourth wider than the prothorax and two
and two-thirds times as long; sides parallel and straight, obtusely
rounded in about apical half; grooves fine but deep; intervals four
times as wide as the grooves, each with a single series of extremely
minute and feeble, well separated punctures, invisible except under
careful observation. Length (2) 2.5 mm.; width 0.9mm. North
Carolina (Southern Pines),—Manee................ nanella n. sp.
31—Body elongate-suboval, rather convex, somewhat shining, deep
black; beak in the male short, not quite as long as the prothorax,
moderately thick, not very densely sculptured and just visibly
arcuate, the antenne at three-fifths; prothorax a fifth wider than
long, the sides converging and feebly, evenly arcuate from base to
the tubulate apex, which is three-fifths as wide as the base; punc-
tures fine and rather sparse; elytra oblong, two-fifths longer than
wide, a fourth wider than the prothorax and two and one-half times
as long, parallel, gradually rounded behind the middle; striz moder-
ate, deep; intervals rather more than three times as wide as the
grooves, each with a single series of minute but evident, remotely
spaced punctures; male abdomen moderately impressed at the
BARIN 491
middle of the first segment. Length (07) 2.35 mm.; width 0.8 mm.
INST sya) hes ae was Reece ok MBM NW baie Shera confinis Lec.
Body nearly similar to that of confinis but with the beak in the male
not so short, being as long as the prothorax, with the antenne at
four-sevenths; prothorax nearly similar, but with the sides less
converging and more strongly, subevenly arcuate to the apex, which
is more briefly and less sharply tubulate; elytra longer, one-half
longer than wide, only a fifth wider than the prothorax and more than
two and one-half times as long, more gradually and narrowly round-
ing behind; strie almost similar but relatively coarser at base;
interstitial series composed of very minute, distant and feeble
punctures, even less distinct than in confinis. Length (o’) 2.35 mm.;
St MReNONNS OH 7 or RI PLOW Aiea ee Sa Nt als dees Mie S Piste soo ee civica n. sp.
Body more narrowly elongate-oval, deep black and shining throughout;
beak in the male feebly, evenly arcuate but more so thanin confinis,
equal in length to the prothorax, the antenne at four-sevenths, the
sculpture strong but loose; prothorax smaller, a sixth wider than
long, the sides less converging, parallel basally, evenly and rather
strongly arcuate throughout, the apex only very feebly and briefly
constricted and almost two-thirds as wide as the base; punctures
much deeper, coarser and separated by scarcely more than their own
diameters, the smooth line indistinct; elytra narrower and longer,
three-fifths longer than wide, nearly a fourth wider than the pro-
thorax and two and three-fourths times as long; sides just visibly,
converging, evenly and moderately arcuate throughout to the rather
rapidly rounding apex; strie moderate; intervals fully three times
as wide as the grooves, each with a single series of extremely minute
though observable, widely spaced punctures. Length (07) 2.25
mm.; width 0.75 mm. Virginia (locality unrecorded).
micans n. sp.
32—Elytral strie remotely, moderately punctate and crenulate. Body
oblong, moderately convex, alutaceous and deep black throughout;
squamules above white, rather sparse but broader than usual and
very distinct, forming a single line on each strial interval; beneath
closer and more conspicuous than usual and rather dense on the
*met-episterna; beak in the female roughly sculptured, slender,
feebly arcuate and as long as the prothorax, the antenne medial,
short, the club longer and thicker than in preceding types, as long
as the five preceding joints; prothorax a fifth wider than long, the
sides parallel, gently rounding in about apical half, the apex tubu-
late and three-fifths as wide as the base; punctures sparse, distinct,
the smooth median line not well defined; elytra oblong, with sub-
parallel arcuate sides and obtuse apex, just visibly wider than the
prothorax and barely twice as long; strie not coarse; intervals
three times as wide as the striew, with single series of fine and well
spaced punctures; prosternum with two small fovee arranged
transversely at apex. Length (9) 2.2 mm.; width 0.75 mm.
J Won fide) See ae Penne oS es Ae | ee benigna n. sp.
Elytral strie with the punctures widely separated, not crenulating the
SUPPL EMAC ee en we et i ch ht oad Aah tN esi g 0, 3 fe nla aw o> 33
492
MEMOIRS ON THE COLEOPTERA
33—Form stout, oblong, convex, deep black and subalutaceous; squam-
ules above white, distinct but sparse and finer and less conspicuous
than in the preceding, forming single interstitial lines, short and
sparse on the under surface, denser on the met-episterna; beak in the
female evenly, moderately arcuate, distinctly sculptured, slender
and not quite as long as the prothorax, the antenne medial, the
club narrower than in benigna; prothorax large, scarcely at all
wider than long, the sides parallel, gently rounding from before the
middle, the tubulate apex two-thirds as wide as the base; punctures
rather coarse, close anteriorly, sparser basally, the median smooth
line narrow but well defined and entire; elytra short, the sides
feebly arcuate to the obtusely rounded apex, as wide as the pro-
thorax and three-fourths longer; striae moderate, the punctures
widely spaced but evident; intervals nearly as in the preceding, the
punctures sparse and very minute; prosternum similar. Length
(2) 2.35 mm.; width 0.88 mm. Florida (Baldwin)...amica n. sp.
Form very much narrower, less convex, deep submetallic black, the
lustre rather shining; squamules above sparse and rather fine but
distinct in single interstitial lines, on the under surface sparse but
closer on the met-episterna; beak sculptured in both sexes and
feebly arcuate, as long as the prothorax in the female, evidently
shorter and rather more arcuate in the male; prothorax as long as
wide, the sides parallel, rounding rather rapidly near the tubulate
apex, which is two-thirds as’ wide as the base; punctures strong
and well separated throughout; elytra two-fifths (co) to one-half
(2 ) longer than wide, the sides parallel and nearly straight, rounding
rather rapidly behind, as wide as the prothorax and three-fourths
longer; strie notably. fine; intervals with minute and widely separ-
ated serial punctures. Length (oO 2) 1.65-1.9 mm.; width 0.5-
0.7 mm. Florida (Enterprise and elsewhere) and North Carolina
(Southern Pines): Ten specimens... ..s22/. 5... concinna Lec.
Form intermediate in stoutness between the two preceding species,
parallel, deep black, slightly shining, the sparse squamules as in
concinna, shorter and less conspicuous than in amica; beak in the
male rather slender, conspicuously sculptured, feebly and subevenly
arcuate and as long as the prothorax, the antenne at four-sevenths;
prothorax nearly as long as wide, the sides feebly, subevenly arcuate,
gradually parallel basally, the apex only feebly constricted and three-
fifths as wide as the base; punctures coarser than in concinna, these
and the median line nearly as in amica; elytra nearly as in concinna
but broader, three-fourths longer than the prothorax and exactly
equal in width; striz not so fine, the fine remote interstitial punc-
tures nearly similar, much feebler and less conspicuous than in
amica; anterior coxe separated by half their width. Length (0)
2.0 mm.; width o.65 mm. Texas (Houston)....... houstoni n. sp.
The species of this genus are very numerous but are well defined
as a rule, and should be easily identified by the characters recorded
above. The concinna section is very strongly differentiated, as is
BARINE 493
also the confusa section, the latter having notably strong and close
thoracic punctuation. In stating the length of the beak, the
language here used should be taken literally; comparisons are made
with the prothorax alone, or with the head and prothorax, the former
should never be interpreted as equivalent to the latter.
Cylindridia n. gen.
In this group the body is narrow, convex, parallel and cylindric
in form, subglabrous and with shining and very sparsely, finely
punctured integuments. In the male the prosternal spines are
greatly developed, extending, from a dorsal viewpoint, far in front
of the head as a rule, and, just in front of them, there is a deep
rounded fossa. The antenne are of the usual type in the preceding
genus, the beak not separated from the head by a decided depres-
sion, and the scutellum is nude and subquadrate. Besides the type
of the genus, Centrinus prolixus Lec., and Limnobaris nitidissima
Csy., we have the two following species:
Cylindridia simulator n. sp.—Slender, cylindric, rather strongly shining,
deep black, with piceous tarsi, the squamules above very small and
remote, slightly more visible at the thoracic sides; beneath they are
extremely small and sparse but closer, whiter and more distinct on the
met-episterna; beak (c’) stout, feebly arcuate, moderately punctulate
and as long as the prothorax, or (2), more slender and smoother, feebly
arcuate and a little longer than the prothorax; antenne at the middle
(o) or slightly behind the middle (Q); prothorax barely as long as
wide (2), or longer than wide (co), the parallel and almost straight
sides rapidly rounded apically to the tubulate apex, which is nearly three-
fifths as wide as the base; punctures very fine and sparse, more distinct
laterally; elytra more than twice as long as wide, very slightly wider
than the prothorax and distinctly more than twice as long, the sides
parallel and straight, obtusely rounded in about apical third; humeral
callus small but evident and abrupt; striz fine; intervals nearly five
times as wide as the grooves, each with a single series of small and widely
distant punctures; male with the tip of the pygidium exposed, the
abdomen narrowly impressed medio-basally, the prosternal spines long
and testaceous, curving outwardly beyond the head. Length (% @)
2.6-3.2 mm.; width 0.7-0.9 mm. Colorado (Greeley),—Wickham.
Four examples.
Differs from prolixa in its smaller size, more slender form and
more rapidly and apically rounded sides of the prothorax toward
the base of the tubular apex.
Cylindridia perexilis n. sp.—Still much smaller and more slender than
the preceding, but similar in color, lustre, sculpture and in the small,
494 MEMOIRS ON THE COLEOPTERA
very remote and inconspicuous squamules; beak in the female thicker
and more arcuate, also more strongly sculptured than in the same sex
of simulator, and as long as the head and prothorax, the antenne behind
the middle; prothorax narrower, longer than wide, the parallel sides
rounding more gradually from anterior third to the tubulate apex, which
is fully two-thirds as wide as the base; punctures nearly similar; elytra
between two and three times as long as wide, evidently wider than
the prothorax and two and one-half times as long, otherwise as in the
preceding throughout and, similarly, with a very feeble sinuation at
each side of the rounding apex asin Limnobaris. Length (2) 2.15 mm.;
width 0.55 mm. Colorado (Greeley),—Wickham. One specimen.
Coming from the same source and locality as the types of simu-
lator, | hesitated a long time before deciding to separate this as a
distinct species, but the different form of beak, much narrower and
more elongate prothorax, with more gradually rounded sides
anteriorly, as well as the much smaller size and still more slender
outline of the body, seemed to be decisive.
The species named Limnobaris tenuis—inadvertently published
in the erroneous form “‘tenua’’—by Mr. Blatchley, possibly belongs
to this genus, but I have not seen it.
Limnobaroides Chmp.
This remarkable genus serves to show how large and complex
groups may and often do refuse to lend themselves to consistent
systematic treatment. Judging by the temperate fauna of North
America, for instance, there could be no doubt that a division on the
visibility of the pygidium in both sexes is entirely natural and
clearly cut, but in Limnobaroides, we have a genus that combines the
characters of the two subdivisions mentioned, for in no known
instance among the northern species, do male prosternal spines—
a purely Centrinid character—appear in species having the pygidium
exposed and vertical in both sexes, but in Limnobaroides this aberrant
character suddenly appears in well developed form. The genus is
purely tropical, extending from southern Mexico to the Amazon.
The following is a hitherto undescribed species from the former
region: ;
*Limnobaroides sculpturatus n. sp.—Very stout, oblong-oval and
convex, feebly shining, deep black, the legs obscure rufous, the prosternal
spines testaceous, long, slender, evenly curved and extending somewhat
beyond the head; vestiture above consisting of sparse, slender, rather
long and conspicuous squamules, wanting in a large medial pronotal
BARINE 495
area and forming single interstitial lines, becoming finer, darker and
indistinct on the elytral flanks; squamules beneath whiter, sparse and
slender on the propleura, shorter, broader and close-set on the hind body;
beak (co) thick, fully half as long as the body, strongly, evenly arcuate,
gradually tapering and distinctly sculptured throughout, the antenne
at three-sevenths, or (9), smaller, more slender and shorter than in the
male, more feebly arcuate, slightly longer than the head and prothorax,
tapering, nearly smooth except basally, with the antenne also at three-
sevenths; prothorax two-fifths wider than long, the sides strongly,
evenly arcuate, becoming less so and parallel in basal half, the feebly
constricted apex much less than half as wide as the base; punctures
very coarse, narrowly separated; scutellum obtriangular, smooth, flat
and nude; elytra scarcely longer than wide, parabolic, a little wider
than the prothorax and one-half longer; grooves rather coarse; intervals
one-half wider than the grooves, each with a series of coarse and rounded
punctures; under surface strongly and closely punctate; anterior coxe
separated by their own width, the prosternal surface flat and coarsely
punctate in the male. Length (co 2) 2.65-2.8 mm.; width 1.2-1.35
mm. Mexico (Frontera, in Tabasco),—Townsend. ‘Three specimens.
The much larger and longer beak in the male than in the female,
is a very exceptional character, but also occurs, I believe, in some
of the Madarids. The female is also smaller and slightly narrower
than the male. In the present species the pygidium of the male
is vertical, prominently convex and separated from the propygidium
by a transverse suture; in the female it is not quite so convex and is
sensibly oblique, though entirely exposed; the body is larger, the
form more obese and the pubescence much more conspicuous than
in expositus Chmp.
The following species has the beak in the male similarly large,
stout, arcuate and strongly sculptured, though less tapering and
relatively not quite so long, the body more narrowly oval and very
convex, and the elytral stria very much finer:
*Limnobaroides bakeri n. sp.—Rather stout, oval, only moderately
convex above, deep black and shining, the legs short and clear rufous;
scales of the upper surface whitish, sparse and slender on the pronotum
and forming single incomplete series on the strial intervals, close and
more distinct beneath, though mostly denuded in the type; beak in the
male rather strongly sculptured and dull, moderately and subevenly
arcuate and fully half as long as the body, feebly tapering from base to
apex; prothorax a third wider than long, the sides subparallel and broadly
arcuate, gradually more rounding anteriorly to the tubulate apex, which
is fully half as wide as the base; punctures coarse, separated by their own
diameters, the smooth median line entire; scutellum quadrate, nude and
flat, broadly emarginate behind, with acute angles; elytra barely a fourth
longer than wide, very obtusely, subevenly parabolic, slightly wider
496 MEMOIRS ON THE COLEOPTERA
than the prothorax and one-half longer, the humeri very obtuse; grooves
moderate, with small and distant punctures at the bottom; intervals
twice as wide as the grooves, each with a single series of fine and widely
separated punctures; under surface closely but not very coarsely punc-
tate. Length (co) 2.4 mm.; width 1.2 mm. Brazil (Para),—Baker.
The spine before each anterior coxa is erect, slender and straight,
and is one-half longer than the thickness of the anterior femora.
Haplostethops n. gen.
The type of this proposed genus was described by me under the
name Idiostethus ellipsoideus, but, with the discovery of several
other allied forms, it becomes apparent that the discrepancies
between it and species of the tubulatus type, are generic, rather
than merely specific. The body is of different outline, being sub-
evenly elongate-oval, the humeral callus much less evident, and,
beneath, the generally very small remote and inconspicuous squam-
ules, become dense white scales broadly toward the sides of the hind
body, almost exactly as in Limnobaris T-album and pusio; there is
no trace of this character in any of the rather numerous species
allied to tubulatus and constituting the true JIdiostethus. The
prosternum is not armed in the male and the rather deep sulcus of
Idiostethus is almost obsolete. Our six species, so far as discovered,
may be described as follows:
Form moderately stout, but little more than twice as long as wide... .2
Form notably slender, much more than twice as long as wide in both
BERESH iat Cee INS (on Ee Sa ei ae eet 4
2—Prothorax less abbreviated. with clearly defined punctures, except at
the sides. Body oval, somewhat convex, deep black. throughout,
moderately shining, the minute remote squamules above scarcely
discoverable, closer and more distinct beneath and dense at the
sides of the hind body; beak in the female long, not quite half as
long as the body, cylindric, evenly and strongly arcuate and dis-
tinctly sculptured, the antenne at the middle; prothorax fully one-
half wider than long, -the sides converging and feebly arcuate, a
little more so toward the tubulate apex, which is more than half as
wide as the base; punctures rather strong and close, especially in a
longitudinal direction; smooth median line biabbreviated; scutellum
small, nude, emarginate behind; elytra one-half longer than wide,
an even ogive in outline from base to the narrow apex, slightly
wider than the prothorax and two and one-half times as long, the
humeral prominences feeble; striz rather coarse, with small distant
punctures at the bottom; intervals twice as wide as the grooves,
with very fine and loosely confused punctures; under surface rather
BARIN 497
strongly and very densely punctate. Length (9) 3.8 mm.; width
1.7mm. Missouri (St. Louis),—Schuster........ fusiformis n. sp.
Prothorax shorter, with long anastomosing longitudinal ruge, the punc-
tires mere er end isolated basally; (28 S05 ee eet eta es 3
3—Form notably stout, convex, shining, deep black, the legs piceous;
squamules of the upper surface very sparse but longer and more
distinct than in the preceding, especially on the elytra and in a
narrow sublateral thoracic line; under surface nearly similar;
beak (co) thick, strongly arcuate, densely sculptured and slightly
longer than the head and prothorax, or (2), longer, more slender
and less sculptured though not very smooth, strongly, evenly arcu-
ate and not quite half as long as the body; antenne near three-
fifths (oc), or at the middle (2); prothorax one-half (co) to three-
fifths (2) wider than long, the converging and feebly arcuate sides
very rapidly rounded apically to the tubulate apex, especially in
the male, the apex barely half as wide as the base; smooth line
obliterated (o), distinct (9); elytra slightly less elongate than in
fusiformis, otherwise nearly similar, though more obtuse at apex,
nearly three times as long as the prothorax in the female—this sex
smaller in size than the male—and with stronger interstitial punc-
tures. Length (o’ 9) 3.4-3.6 mm.; width 1.4-1.5 mm.; Missouri
(St. Louis). Taken by the writer. Two specimens.
gravidula n. sp.
Form less obese but nearly similar in coloration, lustre and vestiture,
the elytra differing in outline, being parallel to behind the middle
and then obliquely rounding to the apex; beak in the male a little
longer, still more evidently longer than the head and prothorax,
the latter similar, but with the apex rather more than half as wide
as the base; elytra one-half longer than wide, distinctly wider than
the prothorax and two and two-thirds times as long; striation
nearly similar; intervals having the punctures similar but more
inclined to uniserial arrangement on some of the intervals, the
punctures very much coarser than in fusiformis. Length (0) 3.0
Deewana, Lowa. os! 0 cet eta) fee ellipsoidea Csy.
4—Prothorax smaller, with more rapidly converging sides; size small.
Narrowly fusiform, convex, polished, black, the legs piceous; squam-
ules above very slender, almost invisible, more evident though
sparse near the sides of the prothorax and on the median line just
before the basal lobe; under surface as in the preceding species;
beak in the male unusually long and moderately thick, arcuate,
densely sculptured and much longer than the head and prothorax,
the antennz at four-sevenths; prothorax more than one-half wider
than long, the sides strongly converging from the base and straight,
moderately arcuate anteriorly, with the constriction very deep, the
tubulate apex more than half as wide as the base; punctures rather
coarse, in general well separated, partially subconfluent, the smooth
line entire and sharply defined; elytra ovulate, more than one-half
longer than wide, nearly a fourth wider than the prothorax and
between two and three times as long; interstitial punctures not very
T. L. Casey, Mem. Col. IX, Feb. 1920.
498
MEMOIRS ON THE COLEOPTERA
small but extremely shallow, moderately separated in single series;
anterior coxe separated by less than half their width, the prosternum
feebly impressed. Length (o’) 2.4 mm.; width 1.1mm. Missouri
(near St. Louts):. Pwo examples: 1222. *-tn gee scaphinella n. sp.
Prothorax larger, with less converging sides and less deeply constricted
BPO Bsn Sse os Rae ratte ear tee ose ce RU altel Oe toe a a ee
5—Body more oblong-oval, convex, shining, black, the legs black, some-
times rufescent; scanty squamules above nearly as in the preceding;
beak (o") rather thick, more arcuate but straighter basally, sculp-
tured densely and much longer than the head and prothorax, or (Q),
longer and much more slender, more evenly and strongly arcuate,
smoother and not quite half as long as the body; antenne (0) at
three-fifths, or (2) at the middle; prothorax more than one-half
wider than long, less trapezoidal than in scaphinella, the sides very
moderately converging and straight, rapidly rounding to the tubu-
late apex, which is much more than half as wide as the base; punc-
tures moderate, less coarse in the female, in great part confluent,
isolated basally; elytra ovoidal, much longer in the male, slightly
wider than the prothorax and between two and three times as long;
sculpture nearly as in the preceding, but with the interstitial punc-
tures smaller, closer and less regularly uniserial. Length ( 2)
2.5-3.0 mm.; width I.0-1.2 mm. Missouri (St. Louis). Four
SPCCIRIEHIG (if. Ste oe RG at oe ye ote nae (ney an marginata n. sp.
Body more elongate and more regularly oval, black, subalutaceous,
with rufous legs; beak in the male a little longer and thinner and
more evenly arcuate than in the preceding, not quite so densely
sculptured, much longer than the head and prothorax, the antenne
near three-fifths; prothorax less transverse, only two-fifths wider
than long, the sides, apex and sculpture nearly similar, the smooth
median line sharply defined and entire; elytra elongate-oval, only
slightly wider than the prothorax and two and one-half times as
long; striae somewhat coarser, the uniserial interstitial punctures
larger but very shallow; prosternum of the male feebly impressed
along the middle anteriorly, the coxe separated by much less than
half their width, the prosternal surface distinctly though loosely
albido-squamulose as usual in the genus. Length (oc) 3.15 mm.;
width’ *.2/mim-« Missouri (St Lonis)oa ee ee elongata n. sp.
. In this genus, as well as Limnobaroides, the female is apparently
smaller and rather less elongate than the male. Haplostethops
seems to be singularly restricted geographically; I have never seen
an example of it taken far from the median section of the Mississippi
River, and nearly all my representatives were, in fact, taken very
near St. Louis.
Idiostethus Csy.
In this genus the body is much shorter and relatively stouter than
in the preceding, with more prominent humeral callus, subglabrous
BARIN 499
throughout and without trace of the condensation of white scales
broadly along the sides of the hind body beneath. The male has
the prosternum similarly unarmed, except in cases to be mentioned
below, but, anteriorly, there is a deep fossa and the prosternal
surface is devoid of the conspicuous clothing of pale scales to be
noted in Haplostethops; the female seems to be similarly smaller
than the male. The genus is widely distributed over the Atlantic
states, and the species now at hand may be known as follows:
Pronotum coarsely sculptured; prosternum spinose or tuberculate before
LU ER eee Aas a est op Or at ie tour he oe Te ee fo 2
Pronotum finely and in general more densely sculptured, the body very
much smaller in size, except in dispersus; prosternum never armed
Dg SCC TES SORRY Tee ia 9 ent ean AW | SRM RS INO te ie ae 9
2—Punctures of the strial intervals small though distinct............3
Punctures rather coarse and relatively conspicuous.................. 7
3—Pronotum coarsely punctate, the punctures isolated basally but else-
where generally confluent in short longitudinal ruge, especially
OSE IEE 25 My) tek Are ane GORE, A eee 4
Pronotum deeply, longitudinally rugose throughout; body less broadly
SM are P ec BN so ac yS ng AhaOR, ine Fuel oma Die elds Ea 6
4—Apical tubulation of the prothorax notably long and clearly defined.
Body broadly suboval, strongly convex, shining, black throughout
and virtually glabrous, the squamules of the elytral series very
small and barely discoverable; beak in the female much longer than
the head and prothorax, moderately sculptured and arcuate; an-
tenne at the middle; prothorax two-thirds wider than long, the
sides strongly converging and straight, rounding before the middle
to the strongly tubulate apex, which is less than half as wide as the
base, the tube between a fifth and sixth as long as the entire pro-
notum; punctures isolated basally though generally more or less
confluent longitudinally, the median smooth line very narrow but
subentire, the scutellum small, emarginate behind; elytra broadly
ovoidal and convex, a third longer than wide, much wider than the
prothorax and two and one-half times as long; grooves rather coarse;
intervals not quite twice as wide as the grooves, the punctures uni-
seriate and only moderately separated; under surface strongly
punctured, rather densely on the abdomen. Length (2) 3.5 mm.;
width 1.75 mm. Pennsylvania (Allegheny),—Hamilton. [Jd.
Sivten Pubs TAA |. g oco sn. > sc o's ola bore oaks oe cen tubulatus Say
Apical tubulation very short and barely noticeable.................. 5
5—Form very stout, ovoidal and convex, polished and deep black;
beak (o") much longer than the head and prothorax, evenly and
moderately arcuate, strongly sculptured, the antenne near three-
fifths, or (2), shorter, thick, similar to that of the male but less
sculptured, the antenne near the middle; prothorax almost as in
tubulatus, except that the apical tubulation is very short, not half
as wide as the base; elytra almost as in tubulatus, except that the
500
MEMOIRS ON THE COLEOPTERA
punctures of the single interstitial series are more minute and much
more widely separated; male with a distinct spine before each
anterior coxa, about as long as the basal thickness of the beak and
suberect and very acute, the abdomen feebly, indefinitely impressed
medio-basally. Length (co 2) 3.0-3.35 mm.; width 1.4-1.7 mm.
Pennsylvania: liawo speciniens.4) 5-2). ee ee ee spiniger n. sp.
Form not quite so stout, similar in coloration, lustre and sculpture;
beak (co) almost similar but less arcuate, much longer than the
head and prothorax, with the antenne near three-fifths; prothorax
nearly similar but shorter, three-fourths wider than long, the smooth
median line similarly narrow and well defined; apical tubulation
similar; elytra similar but not so inflated, the grooves not quite so
coarse and the remote punctures along the bottom less evident;
intervals similar; legs much more conspicuously clothed with longer
and more bristling squamules, the abdomen similar, the prosternum
with a short and broadly angulate tubercle before each coxa; female
smaller than the male, with shorter beak, having the antenne at
the middle and the pronotal apex relatively broader than in the
male. Length (o 9) 2.8-3.25mm.; width1.25-1.6mm. Indiana.
proximus n. sp.
6—Body smaller and more narrowly oval than in any of the preceding,
similarly black and shining; beak in the male evenly and distinctly
arcuate, rather thick, strongly sculptured and much longer than
the head and prothorax, the antenne rather beyond four-sevenths;
prothorax transverse, the sides less rapidly rounding anteriorly
than in either of the preceding, rounding before the middle, sub-
parallel basally, the sculpture closer, consisting of very large, oval,
subcontiguous punctures basally and close but coarse long ruge
elsewhere; smooth median line obliterated; elytra broadly ovoidal,
much wider than the prothorax and two and one-half times as long,
the sculpture as in proximus; male with a feeble medio-basal
abdominal impression, the prosternum without distinguishable
modification before the coxe; legs piceo-rufous. Length (07) 2.85
(iid. Wit £40. WNewoN Olkem tie. cn nies strigosicollis n. sp.
—Pronotal punctures everywhere isolated and distinctly defined, even
at the sides and also beneath on the propleura; sparse setiform
squamules of the upper surface unusually distinct. Body very
stout, rounded-oval and convex, shining, black, the legs rufous;
beak in the male evenly, moderately arcuate, slightly tapering, a
little longer than the head and prothorax, the antenne somewhat
beyond four-sevenths; prothorax three-fifths wider than long, the
slightly converging and nearly straight sides broadly, evenly round-
ing in apical third to the short but strong tubulation, which is half
as wide as the base; median smooth line strongly defined and entire;
elytra barely visibly longer than wide, evenly elliptic, wider than
the prothorax and more than twice as long; grooves rather coarse,
intervals twice as wide as the grooves, the well separated uniserial
sete very distinct; male with a very short spiniform tubercle before
each anterior coxa. Length (oc) 3.1 mm.; width 1.5 mm. Iowa
(lowa: City) =—Wickhaim: soci es oe erage puncticollis n. sp.
BARINAE 501
Pronotal punctures less coarse but isolated basally and on the propleura,
elsewhere tending to longitudinal confluence and coarse rugulosity;
descrinuous arawi iron the females: 8.5 ol oa pwede ewe 8
8—Body larger than in any other species, stout, oblong-oval, convex,
shining and black throughout, the legs black; beak (9) cylindric,
evenly and moderately arcuate, sparsely but distinctly sculptured
and much longer than the head and prothorax, the antenne just
visibly beyond the middle; prothorax one-half wider than long, the
converging sides nearly straight, rapidly rounding anteriorly, the
strongly tubulate apex half as wide as the base, the smooth line
well developed, sharply defined and entire; elytra fully a third
longer than wide, elliptic, the sides near the obtusely rounded apex
feebly sinuate as in Limnobaris, distinctly wider than the prothorax
and two and one-half times as long, the humeral prominences dis-
tinct; grooves coarse, deep, punctured along the bottom; intervals
about twice as wide as the grooves, the squamules from the large
but very shallow punctures not distinct. Length (9) 4.0 mm.;
width 1.9 mm. Florida (locality unrecorded)... .,. . .illustris n. sp.
Body in size and general form almost as in spiniger, deep black, shining,
the legs piceo-rufous; setiform squamules not evident above, very
minute within the coarse punctures beneath; beak (Q ) moderately
stout, cylindric, sparsely sculptured, evenly and distinctly arcuate
and much longer than the head and prothorax, the antenne slightly
though evidently beyond the middle; prothorax transverse, nearly
four-fifths wider than long, the sides feebly converging and just
visibly arcuate, broadly rounding from slightly before the middle,
the briefly but sharply tubulate apex half as wide as the base;
surface strongly rugose, only a small lateral area at base being
discretely punctate; smooth median line very narrow and sub-
cariniform; elytra a fourth longer than wide, subelliptic, with rather
prominent humeri, wider than the prothorax and two and three-
fourths times as long; grooves deep, strongly punctate along the
bottom; intervals barely twice as wide as the grooves, the setiform
squamules indistinct. Length (2) 3.2 mm.; width 1.7 mm.
IGE DCMIE MAGS ix! dhe Sid 24 Sree Lab and oh x oy 8 rugicollis n. sp.
Body smaller and more abbreviated, very convex, black and shining, the
legs black; beak (9) thicker and slightly shorter than in the pre-
ceding, strongly, closely sculptured, distinctly longer than the head
and prothorax and similarly arcuate, the antenne exactly at the
middle; prothorax less transverse, two-thirds wider than long, the
sides converging and distinctly, subevenly arcuate from base to the
briefly tubulate apex, which is more than half as wide as the base;
surface and median line nearly as in rugicollis; elytra shorter, a
fifth longer than wide, much wider than the prothorax and less
than two and one-half times as long; grooves strongly punctured
along the bottom and about half as wide as the intervals, the punc-
tures of the single series of the latter not quite so coarse but well
defined and well separated, bearing very distinct setiform squamules.
Length (2) 2.7 mm.; width 1.4mm. Illinois (locality unrecorded).
ovulatus n. sp.
502 MEMOIRS ON THE COLEOPTERA
g—Size of the body agreeing very well with that of the preceding section.
Form stout, oval, convex, not very shining, black, the legs piceo-
rufous; pale slender squamules of the upper surface very small and
indistinct but longer, closer and distinct toward the sides of the
pronotum and on the median line at base, the interstitial series
having larger and paler squamules, remotely separated and sub-
erect; beneath they are indistinct but become dense at the sides of
the last three ventral segments and at apex; beak in the male short
and thick, feebly arcuate, densely sculptured and not as long as the
head and prothorax, the antenne at three-fifths; prothorax two-
thirds wider than long, strongly constricted at apex; punctures very
moderate, isolated at base but elsewhere forming long rugule,
except in a smooth discal spot at each side, the median smooth line
well developed, sharply defined and entire; scutellum very small;
elytra semi-elliptic, a third longer than wide, distinctly wider than
the prothorax and two and one-half times as long, the humeral callus
obsolete; grooves coarse, with extremely remote punctures along the
bottom; intervals one-half wider than the grooves, with single
series of moderate and rather close-set punctures; abdomen of the
male impressed medio-basally, the prosternum moderately sulcate
and without ante-coxal prominences. Length (co) 3.2 mm.; width
1.5 Tne Alabama eee et eae oe eee ee dispersus Csy.
Size of the body very much smaller, sometimes relatively minute... .10
10—Prothorax more transverse, the sides but feebly converging, very
rapidly and strongly rounded anteriorly to the tubulate apex.
Body rhombic, convex, rather shining, black throughout, the legs
black; squamules above almost wanting but forming evident single
interstitial lines, slender and sparse but evident beneath; beak
nearly similar in the sexes, rather slender, finely sculptured basally,
smoother apically, as long as the head and prothorax (0), distinctly
longer (9), the antenne submedial in both sexes; prothorax three-
fifths wider than long, finely, densely rugulose, the smooth line fine
but entire; tubulate apex more than half as wide as the base, the
constriction deep; elytra obtusely attenuate, with arcuate sides, a
third longer than wide, at the very prominent humeri a third wider
than the prothorax, nearly three times as long; grooves moderate,
impunctate; intervals three times as wide as the grooves, each with
a single series of small but distinct and widely separated punctures.
Length (o' 9) 2.3-2.6 mm.; width 1.15-1.2 mm. Kentucky.
Four-examipless: seers here ane eee epee ees humeralis n. sp.
Prothorax smaller, the sides more converging from the base, only slightly
rounded anteriorlyias'a rule ee eee ne ee eee 1
11—Elytra only slightly elongate in either sex and with notably promi-
nént hunieriiy. 57405 Ae oe AO oe he. ere a enone ne ea 12
Elytra distinctly eloiieate:. ARS 2 eiseieee ate eee oe eects 14
12—Body very small in size. Form subrhomboidal, convex, rather
shining, black throughout; squamules almost wanting above, very
minute, sparse and slender beneath; beak in the male unusually
slender, feebly arcuate, densely sculptured and distinctly longer than
the head and prothorax, the antenne at four-sevenths; prothorax
BARIN 503
less than one-half wider than long, the converging sides straight,
rapidly and strongly rounding anteriorly, but for only a very short
distance, to the tubulate apex, which is half as wide as the base;
surface finely, densely rugulose; smooth line distinct only toward
base; elytra but little over a fourth longer than wide, the sides
feebly converging in basal, more rapidly oblique and rounded in
apical, half, a third wider than the prothorax and rather less than
two and one-half times as long; striz fine, about a fourth as wide
as the intervals, the single series composed of minute and widely
separated punctures. Length (o') 1.8 mm., width 0.85 mm.
Pennsylvania. A single typical example........... subcalvus Lec.
Body less minute, convex and very much stouter in form, the humeri
similarly prominent; fine darkish squamules above minute and
very inconspicuous, more evident and whiter beneath........... 13
13—Form subrhombic, very stout and convex, shining, black, the legs
black; beak in the female rather long, feebly arcuate, distinctly
sculptured and very much longer than the head and prothorax, the
antenne at about the middle; prothorax conical, scarcely one-half
wider than long, the strongly converging sides very feebly, subevenly
arcuate throughout, the constriction not deep, the subtubulate apex
half as wide as the base; surface finely, densely rugulose, the smooth
line narrow, distinct only toward base; elytra a fourth longer than
wide, a third wider than the prothorax and more than two and one-
half times as long, the sides behind the prominent humeri parallel
and straight, rounding and oblique in apical half to the narrowly
rounded apex; striae moderate; intervals three times as wide as the
striz, with single series of fine and distant punctures. Length (9 )
2.15 mm.; width 1.15 mm. Missouri (locality unrecorded).
nanulus n. sp.
Form very broadly oval, convex, black and shining, the legs black; beak
moderately thick, evenly, very feebly arcuate, distinctly longer than
the head and prothorax and strongly sculptured; antenne at four-
sevenths; prothorax nearly as in the preceding but more transverse
and with more strongly converging sides, notably arcuate only for a
very short distance at the tubulate apex, which is more than half
as wide as the base, two-thirds wider than long, very densely rugu-
lose, the fine smooth line traceable only basally; elytra broader,
barely a fifth longer than wide, subelliptic, with narrowly rounded
apex, a fourth wider than the prothorax and two and one-half times
as long; striae moderate; intervals between three and four times as .
wide as the grooves, the punctures fine and distant, forming rather
less regular single series than usual. Length (o”) 2.25 mm.; width
1.2mm. Kentucky. One example............brevipennis n. sp.
14—Fine and suberect, setiform squamules of the elytra forming even
single lines and very distinct. Body fusiform, narrowly rounded
behind, convex, moderately shining, black, the legs partially piceous;
squamules on the pronotum more evident in a small spot at the basal
lobe, inconspicuous beneath; beak in the male slender, sculptured,
evenly and feebly arcuate and evidently longer than the head and
prothorax, the antenne at four-sevenths; prothorax not quite one-
504 MEMOIRS ON THE COLEOPTERA
half wider than long, subconical, the converging straight sides
becoming broadly arcuate anteriorly, the tubulate apex half as
wide as the base, the surface densely rugulose, the narrow smooth
line obliterated anteriorly; elytra two-fifths longer than wide, the
oblique sides evenly and rather strongly arcuate from the very
moderate humeral prominences to the somewhat acute apex, nearly
a third wider than the prothorax and between two and three times
as long; striz deep; intervals rather less than three times as wide
as the grooves, the punctures small, widely spaced in single series,
_more close-set on the second and third, confused on the fifth basally;
squamules beneath denser on the last three abdominal segments.
Length (o7) 2.3 mm.; width 1.15 mm. Missouri,—Schuster.
densicollis n. sp.
Fine squamules above indistinct or very inconspicuous throughout.. .15
15—Form somewhat as in the preceding but narrower, the sides of the
elytra subevenly oblique but less arcuate, with the apex similarly
' narrowly subogival; color black, somewhat shining, the legs black;
beak in the female slender, nearly smooth distally, evenly and feebly
arcuate and distinctly longer than the head and prothorax, the an-
tenne at the middle; prothorax short, three-fifths wider than long,
trapezoidal, the strongly converging sides nearly straight to the
fine strong apical constriction, the apex more than half as wide as
the base; surface with dense but relatively not very fine rugulosity,
the median smooth line obsolete; elytra three-sevenths longer than
wide, scarcely a fourth wider than the prothorax and between two
and three times as long; sides subparallel and nearly straight, oblique
and rounded in apical half, the humeral callus feebler than usual in
this section; strize moderate; intervals between three and four
times as wide as the strie, each with a single remotely spaced series
of very small punctures. Length (2) 1.7 mm.; width 0.78 mm.
Indiana. “levette collection: ics ie Soe es eee minutus n. sp.
Form stouter, the sides of the elytra less oblique, more feebly, subevenly
arcuate, the apex much more obtuse than in either of the two pre-
ceding; color black, rather shining, the pronotum and under surface
densely sculptured and dull; beak in the female slender, only just
visibly arcuate, nearly smooth distally, about as long as the head
and prothorax, the antenne barely perceptibly beyond the middle;
prothorax small, conical, with broadly arcuate, basally straighter
sides, scarcely one-half wider than long, the subtubulate apex
fully half as wide as the base; surface finely, very densely rugose,
the median smooth line wholly obliterated; elytra two-fifths longer
than wide, at the very prominent humeri fully two-fifths wider than
the prothorax, nearly three times as long; striz moderate; intervals
about three times as wide as the grooves, each with a single series of
small and well separated punctures. Length (2) 2.5 mm.; width
1.2mm. Indiana. Levette dbllection.... ..1.:..; parvicollis n. sp.
The strigapunctus, of Hamilton, I find from a typical specimen
sent by the author, is none other than the true tubulatus of Say.
BARINAE 505
The tubulation in the allied species, hitherto associated with it, is so
brief, that it certainly would not have been made the basis for the
very appropriate specific name given by Say.
The short spines and acute tubercles that appear on the proster-
num before the coxe in the larger and stout, coarsely sculptured
species of the twbulatus type, were overlooked by me in my revision,
as stated by Blatchley; they do not appear, however, in the minute
forms allied to subcalvus, or in dispersus, and it is interesting to
note in the latter, the peculiar and extremely dense vestiture at the
sides of the under surface, characterizing Haplostethops and Limno-
baris, but here it is confined to the last three segments of the
abdomen. In the minute densicollis it also appears, but in a looser
or less compact and more erect form; there seems to be no trace of
it in any other of the minute species, or in any of the larger forms
allied to tubulatus.
The female appears to be smaller than the male throughout the
genus, less stout and sometimes with relatively shorter beak, as is
the case in the preceding genus, as well as Limnobaroides; this is a
rather singular character to be encountered in the Barine, which
however, constitute a group of the Coleoptera characterized by
inconsistencies of all sorts.
- Stethobaris Lec.
The eastern smooth species of this genus can be assigned to two
well defined sections, one having the prothorax shouldered, that is
with feebly converging sides from the base, becoming broadly and
strongly rounded anteriorly, and the other having a more conical
form of this part, the sides more strongly converging from the base,
and feebly and not at all abruptly, if at all, more rounded anteriorly.
The language of LeConte (Proc. Am. Phil. Soc., XV, p. 302) “pro-
thorax rapidly narrowed in front, very strongly and tubularly
constricted near the tip,’’ shows that the prothorax in ovata has the
form of the first section just noted. In regard to the interstitial
punctuation of ovata, the wording under the original description is
‘with rows of small but deep punctures,” and, under the subsequent
reference (p. 303), “‘the interspaces are narrow, each with a row of
fine but distinct punctures.’’ All this seems to show that under
my description of ovata (Rev. p. 656), in stating that the inter-
506 MEMOIRS ON THE COLEOPTERA
stitial punctures are confused, I have probably given an incorrect
identification of ovata, and the name commixta given by Blatchley
to my ovata Lec., may be regarded as warranted. But the species
described by me under the name congermana, is by no means ovata,
as stated by the author quoted, but a distinct and valid species;
for the prothorax has a conical form, with the sides scarcely at all
more rounded anteriorly, and the single rows on the strial intervals
are composed of punctures so very fine and feeble as to be observable
only by careful observation and under rather high magnification,
and the language of LeConte quoted above would therefore not.
apply at all. The Massachusetts type of congermana is a male,
and I now have a female of the species, agreeing absolutely in all
specific characters, from Buffalo, New York. There is now at
hand a specimen taken by Mr. Frost at Hopkinton, Mass., which
satisfies all of LeConte’s description of ovata, and I therefore regard
it as a typical example of that species; the interstitial punctures
are in single rows, and, though small, are deep and distinct, and the
sides of the prothorax are broadly and strongly rounded anteriorly
and deeply constricted at the notably marked tubulation, which
doubtless led LeConte to regard the species as tubulatus Say. In
congermana this tubulation is shorter and less conspicuous than in
ovata. As Mr. Blatchley states that his commixta is a name given.
for the Massachusetts species that I had described as ovata Lec.,
I regard this specimen described by me as properly the type of
commixta; it is represented in my collection also from Virginia and
the mountains of western North Carolina.
The following is another species allied to congermana, in having a
subconical prothorax:
Stethobaris convergens n. sp.—Stout and very convex, polished, deep ©
black throughout and glabrous; beak in the female thick, evenly and
moderately arcuate, shining, though rather strongly, sparsely sculptured
and much longer than the head and prothorax, the antenne at the
middle; prothorax one-half wider than long, the sides strongly converging,
almost evenly and moderately arcuate from base to the apical con-
striction, which is tubulate and slightly less than half as wide as the
base; punctures strong, separated by about their own diameters, smaller
and closer toward the well defined median smooth line, which is entire as
usual, close but not in mutual contact on the propleura; basal lobe
moderate but rather abrupt and distinct; scutellum small, quadrate,
impressed along the middle; elytra large, a fourth longer than wide,
very obtusely parabolic, with distinct though obtuse humeral promi-
BARIN2 507
nences, a fifth wider than the prothorax and two and one-half times as
long; grooves deep, rather coarse, with only moderate punctures, not
at all crenulate; intervals from less to more than twice as wide as the
grooves, the fine punctures distinct, generally rather close-set in single
series, but confused along the middle of the second and third, and
throughout the width of the fifth.toward base; under surface strongly
and closely punctured. Length (2) 3.15 mm.; width 1.65 mm. Mis-
souri (locality unrecorded).
Differs from congermana in its rather larger size and much stouter
form, in the slightly longer beak in the female, in the larger and less
abbreviated prothorax, much feebler punctures at the bottom of the
elytral grooves, and in the distinct and not subobsolete punctures of
the strial intervals.
The following species belongs to the ovata section, near incompta:
Stethobaris collaris n. sp.—Stout, oblong-oval and convex, polished,
black, the legs and beak piceous; surface glabrous; beak thick, evenly
and moderately arcuate, shining, sparsely sculptured and but little longer
than the head and prothorax, the antenne submedian; prothorax large,
one-half wider than long, the sides subparallel in basal half, broadly
and transversely rounding thence to the deep apical constriction, the
conspicuously tubulate apex being almost half as wide as the base;
punctures very fine and remote, somewhat coarse though separated by
nearly twice their diameters laterally, obliquely rugulose on parts of the
propleura; smooth median line feebly defined, basal lobe broadly round-
ed; elytra broadly oval, barely a fourth longer than wide, distinctly
wider than the prothorax but only a little more than twice as long, the
humeri obtusely prominent; grooves rather coarse, deep, not at all
crenulate, the punctures along the bottom remote and distinct; intervals
alternating from two to nearly three times as wide as the grooves, the
narrower with single rows, the broader with confused, very fine punctures;
under surface coarsely, loosely punctate, the abdomen behind the first
segment finely and sparsely. Length (9) 3.0 mm.; width 1.5 mm.
Florida (Enterprise). One specimen.
This species differs from incompta in its larger and less abbrevi-
ated prothorax, with much broader apical tubulation, this in that
species being very much less than half as wide as the base; in
incompta, also, the elytral grooves are crenulate basally.
The following belongs to an aberrant group of the genus, peculiar
to the Arizona region and with very much coarser sculpture than
the eastern species:
Stethobaris arizonica n. sp.—Oblong-subrhomboidal, -black, the legs
picescent, the elytra dull rufous, moderately shining, glabrous; beak in
the female thick, evenly arcuate, distinctly tapering apically and with
coarse close sculpture throughout, about as long as the head and pro-
508 MEMOIRS ON THE COLEOPTERA
thorax, the antenne at the middle; prothorax only a third wider than
long, the sides evenly converging, evenly and rather strongly arcuate
from base to the apical constriction, the tubulate apex a little less than
half as wide as the base; punctures coarse, separated by their own
diameters, dense laterally, the propleura rugulate; impunctate median
line only visible in basal half; elytra three-sevenths longer than wide, a
fourth wider than the prothorax and a little more than twice as long, the
feebly oblique sides nearly straight to the broad, circularly rounded apex,
the humeral prominences large; grooves rather coarse, with small,
remote punctures along the bottom, the intervals subequal, only one-
half wider than the grooves, each with a single series of strong and close-
set punctures, which are two-fifths as wide as the interval; sterna very
coarsely, densely punctate, the abdomen much more finely and loosely.
Length (2) 2.65 mm.; width 1.35 mm. Arizona (locality unrecorded
but different from that of the type of egregia). One specimen.
The type of this species I considered in connection with the type
of the larger egregia, in my revision, but it seems to be a different
species, differing in its smaller size, smaller and less transverse
prothorax, with more evenly arcuate sides and very much less dense
punctuation, and with less coarse and more evenly serial interstitial
punctures; the metasternal punctures are coarser though equally
dense.
Cholinobaris n. gen.
The body in this genus is strongly remindful of Oomorphidius
erasus, being rhomboidal, very convex and smooth, with virtually
glabrous integments, but the prothorax is not tubulate at apex
above, and the elytral sculpture is quite different. The beak is
very thick, with strongly decussate mandibles, the antennal funicle
rather compact, the club abrupt but very small, almost circular,
its basal joint fully one-half the mass. The anterior coxe are
somewhat widely separated and the prosternum unmodified. The
prothorax is similarly without basal lobe, but the scutellum is very
different, being notably elongate and posteriorly attenuate, though
small. The third tarsal joint is rather narrowly dilated but is
bilobed, and the tarsal claws seem to be very small and free, though -
on all except one tarsus of the type specimen, and this partially
concealed from view, the claws have been broken away. ‘The type
may be described as follows:
Cholinobaris rhomboidea n. sp.—Rhomboidal, very convex, moder-
ately shining, though alutaceous and glabrous above; under surface
smooth and glabrous, excepting the sterna of the hind body and the
BARINZ 509
‘abdomen at base between the coxe, where there are sparse and rather
strong punctures, each enclosing a minute scale; beak in the male very
thick, cylindric, smooth and rather shining, finely, somewhat closely
punctate, evenly, moderately arcuate and nearly as long as the head
and prothorax, the antenne at about the middle; prothorax large, almost
as long as wide, the sides converging and straight for three-fifths, then
rounded, becoming sinuously oblique to the apex, which is half as wide
as the base, constricted and tubulate only beneath; base broadly, evenly
arcuate from side to side; punctures extremely minute and remote,
becoming more visible toward apex; elytra a fourth longer than wide,
inflated, with rounded sides near basal fourth, and there a fourth wider
than the prothorax, fully three-fourths longer, the sides behind basal
fourth oblique and broadly arcuate to the narrowly rounded apex; striz
fine and extremely feeble, almost obliterated, but with very large, widely
spaced and conspicuous punctures, the intervals with extremely minute,
sparse and confused punctures; male with the abdomen broadly, feebly
impressed and strongly punctured at base; tibie# with coarse fulvous
decumbent vestiture internally. Length (oc) 3.5 mm.; width 2.0 mm.
North Carolina (Southern Pines),—Manee.
This is one of the remarkable apterous rhomboidal species, such
as Oomorphidius and Eisonyx; they are probably the remains of a
very ancient fauna, and, at the present time, nearly all that are
known constitute monotypic genera. The upper profile of the body,
viewed from the side, is strongly and evenly arcuate from front to
elytral apex, in this species more strongly so than in Oomorphidius
erasus, a specimen of which, from Iowa, is now in my collection.
Zygobarella n. gen.
In this genus the body is small in size, oval, rather coarsely
sculptured and subglabrous, the elytra with remotely scattered
linear white scales. In the last-named feature, as well as in the
general structure of the beak, mandibles and prosternum, as well
as in the connate tarsal claws, it resembles Zygobaris Lec., but in
the type of elytral sculpture, form of the distal parts of the antennz
and in the much smaller body, it differs conspicuously. The outer
part of the antennal funicle does not merge gradually into the out-
line of the club as it does in Zygobaris, but the club is abrupt in
formation and its basal joint is not a third the total length as in
that genus, but fully one-half the mass or only slightly less. The
elytral striz are coarser, and are finely to obscurely punctate along
the bottom, and not fine, with very large punctures as in Zygobaris;
the interstitial sculpture, also, is altogether different. The type
510 MEMOIRS ON THE COLEOPTERA
of this genus is Zygobaris xanthoxyli Pierce, and the Mexican Z.
tristicula Chmp., also belongs here. Zygobaris nitens Lec., is at
present the only species assignable to the true Zygobaris.
Neocratus n. gen.
The body in this genus is somewhat larger than in Zygobaris,
with much larger and longer prothorax and very different sculpture.
The beak is long but thick and strongly sculptured, the mandibles
similarly decussate, the antennal funicle unmodified apically, the
club abrupt, rather small and gradually pointed, with its first
joint about half the mass. The prosternum is flat and unmodified,
unarmed in the male, the coxz well separated and the tarsal claws
approximate, becoming strongly connate basally as in Zygobaris.
The scutellum is smooth, obovoidal and strongly rounded at tip.
The type is the following:
*Neocratus nudus n. sp.—Evenly rhomboid-oval, strongly convex,
polished, black and completely glabrous above, the coarse punctures of
the under surface—smaller and sparser on the abdomen—each enclosing
a very small and slender squamule; the prosternum is clothed with
dense elongate ochreous scales; legs, beak and antenne black; beak in
the male, thick, feebly tapering, shining though coarsely sculptured
throughout, strongly, subevenly arcuate and a little more than half as
long as the body, the antenne near four-sevenths, the scape far from
attaining the finely faceted eyes; prothorax barely a fourth wider than
long, the sides evenly converging and very evenly, moderately arcuate
from base to the moderate apical constriction, the subtubulate apex but
slightly more than a third as wide as the base, the basal lobe abrupt,
moderate in size, with its apex truncate at the scutellum; punctures
well separated, fine medially, gradually becoming coarser laterally,
forming coarse ruge at the sides and on the propleura; elytra very broad,
only a fifth or sixth longer than wide, subtriangular, with evenly arcuate
sides and rather narrowly rounded apex, at the prominent humeri
distinctly wider than the prothorax and only one-half longer; strie
moderately coarse, not very abrupt, finely punctate along the bottom;
intervals between two and three times as wide as the strie, not very
flat, coarsely, closely and confusedly punctate, less coarsely and more
loosely toward the suture; abdomen of the male distinctly impressed
medio-basally. Length (co) 4.5 mm.; width 2.35 mm. Mexico (Fron-
tera, in Tabasco),—Townsend. :
Possibly this species may have been described, but I can find
nothing resembling it in the work of Mr. Champion.
BARIN4E 511
Catapastus Csy.
This genus of minute species, allied somewhat closely to the
Zygobarid series, proves to have an extended range over the more
southern parts of the North American continent. The following
three species are to be added in our own fauna:
Catapastus simplex n. sp—Rhomboidal, convex and feebly shining,
piceous-black throughout, the legs not paler; upper surface with slender
brown decumbent scales, sparse but evident on the pronotum, especially
toward the sides, also on the flanks of the elytra, but not medially, the
strial punctures each with a very small slender whitish scale; scattered
pale scales wholly wanting; beneath, the scales are larger, white and
well separated, closer on the met-episterna; beak in the female thick,
moderately arcuate, slightly tapering and as long as the head and pro-
thorax, sculptured and dullish, finely, sparsely squamulose basally, the
antenne at about the middle; prothorax large, two-fifths wider than long,
the sides parallel, rapidly rounding and oblique before the middle, the
feebly constricted apex more than half as wide as the base; punctures
coarse and dense, the median smooth line vestigial and central only;
scutellum albido-squamose; elytra two-fifths longer than wide, parabolic,
with individually rounded apices and prominent humeri, a fifth wider
than the prothorax and slightly more than twice as long; striae moderate;
intervals twice as wide as the grooves, with single series of well separated,
moderate and subtransverse punctures; under surface strongly and
densely punctured throughout. Length (9) 2.0 mm.; width 0.85 mm.
A single example, without locality label, but probably from Florida.
When compared with conspersus, this species is much stouter,
with larger and more transverse prothorax, sparser interstitial
punctures and with completely obsolete scattered pale scales.
Catapastus squamirostris n. sp.—Narrowly and feebly rhomboidal,
convex, dull black, the legs not definitely paler; upper surface with con-
spicuous elongate pale ochreous squamules, sparse but very uniformly
distributed on the pronotum and in single close-set conspicuous lines on
the strial intervals, more broadly confused toward base on the second
and third, without scattered scales; on the under surface large, less
yellow, well separated, very dense on the prosternum and finer and rather
close on the met-episterna, narrow but distinct on the legs; beak in the
male short, barely as long as the prothorax, thick basally, rapidly tapering
to the apex, evenly, moderately arcuate, rather closely clothed through-
out with conspicuous yellowish scales, the antenne beneath and beyond
the middle, rather thick and compact; prothorax only a little wider than
long, the moderately converging sides slightly and subevenly arcuate;
apex more than half as wide as the base, the basal lobe small but abrupt
and strong; punctures coarse, very close and even throughout, without
trace of smooth median line; scutellum small, semi-glabrous; elytra
two-fifths longer than wide, rapidly subparabolic, somewhat narrowly
512 MEMOIRS ON THE COLEOPTERA
rounded at apex, the oblique sides feebly arcuate, a fourth wider than
the prothorax and scarcely twice as long; striz# moderate, half as wide
as the intervals, the punctures of the latter small, rather well separated
and unevenly uniserial, confused throughout the broader second and
third; male with a feeble rounded medio-basal impression, which is
semi-glabrous. Length (oc?) 1.85 mm.; widtho.8 mm. Texas (Browns-
ville), —Wickham.
A very distinct and isolated form, easily recognizable by the
clearly marked single lines of ochreous scales on the elytra and the
conspicuously squamulose beak.
Catapastus seriatus n. sp—Narrowly subrhomboidal, more obtuse
behind, feebly shining, black throughout; squamules of the upper
surface long, slender, sparse and whitish, evenly distributed on the pro-
notum and in single lines on the strial intervals, becoming rapidly and
broadly confused only very near the base on the second interspace;
scattered scales wanting; under surface with slender and close-set
scales, larger and sparser throughout the prosternum; beak in the female
moderately thick, feebly tapering, strongly, evenly arcuate, moderately
sculptured and a little longer than the head and prothorax, the surface
with some fine, sparse squamules basally; antenne inserted beneath and
at the middle; prothorax a fourth wider than long, the sides converging
and straight, rounding and oblique only in apical fourth, the apex three-
fifths as wide as the base; punctures coarse, much less close-set than in
the preceding and with a well developed, entire, polished and impunctate
median line; scutellum semi-squamose, small; elytra a fourth longer
than wide, the sides feebly oblique and rather strongly, subevenly arcuate
to the somewhat obtusely rounded apex, the humeri not distinctly tumid,
a fifth wider than the prothorax and distinctly more than twice as long;
intervals distinctly and uniserially punctate. Length (Q) 1.75 mm.;
width 0.75 mm. Texas (Brownsville),—Wickham. One example, as in
the preceding.
Although this species and the preceding were taken at the same
place and by the same collector, one represented only by the male
and the other by the female, and both characterized by somewhat
the same unilineate arrangement of the elytral squamules, I have
no doubt at all that they represent different species. The form and.
sculpture of the prothorax differs very much, this being a feature
not greatly subject to sexual modification. (
Of C. albonotatus Linell, I have two specimens, one from Lake
Worth, taken by Kinzel, and the other from Eleuthera Island; it
is the smallest species known to me, being 1.5 by 0.62 mm. in di-
mensions; the basal spots of white scales, from which it derives its
name, are minute and rather inconspicuous.
BARINAE 513
Barinus Csy.
The species of this genus are moderately numerous and were
included under Barilepton by LeConte, but the general habitus of
the body is very different, lacking the narrow and subcylindric
outline of that genus, as well as some of its more distinctive struc-
tural characters. The two following species are hitherto unde-
scribed:
Barinus ferruginosus n. sp.—Oblong and moderately convex, black
throughout, the integuments shining where exposed, the upper surface
densely clothed with large, oblong, ferruginous scales, abruptly glabrous
’ in a large oval median area on the pronotum; under surface and femora
with very minute and slender, sparse squamules, more distinct at the
outer sides of the anterior coxe and becoming dense whitish scales on
the met-episterna and sides of the last three ventral segments; beak in
the female thick, smooth, finely punctulate, strongly arcuate basally,
straighter apically, and distinctly shorter than the prothorax, the
antenne at the middle subinferiorly; prothorax nearly one-half wider
than long, the sides parallel and arcuate, gradually more converging
before the middle, the feebly constricted apex fully three-fifths as wide
as the base; punctures rather coarse, separated by less than their dia-
meters, the median smooth line distinct and entire; scutellum rounded,
nude; elytra two-fifths longer than wide, about as wide as the prothorax
and two and one-half times as long, the sides parallel, gradually rounding
in apical two-fifths to the narrowly obtuse apex, the humeral prominences
feeble; strie indicated by clefts in the dense vestiture; abdomen finely,
sparsely punctate and polished, more strongly and closely punctate on
the first segment; anterior coxe separated by less than half their width.
Length (2) 3.0 mm.; width 1.2 mm. Missouri (St. Louis),—Schuster.
Related to curticollis but broader, more oblong, with still more
transverse and laterally more rounded prothorax and denser and
more ferruginous vestiture of the upper surface; it seems to be
related also to lutescens Lec.
Barinus debilis n. sp.—Oblong, parallel, rather convex and shining,
black, the legs piceo-rufous; elongate scales of the upper surface whitish
and rather sparse, more distinct, though not denser toward the sides of
the pronotum, narrowly and loosely confused on the strial intervals,
the squamulation beneath as in the preceding species and curticollis;
beak in the male thick, strongly, evenly arcuate, strongly punctate but
shining, only about three-fourths as long as the prothorax, the antenne
slightly beyond the middle, the funicle and club together about as long
as the beak; prothorax a fourth wider than long, the sides nearly straight,
subparallel or very feebly diverging, rapidly rounding and oblique in
apical third, the feebly constricted apex three-fifths as wide as the base;
punctures rather coarse, separated by nearly their diameters, smaller
T. L. Casey, Mem. Col. IX, March, 1920.
514 MEMOIRS ON THE COLEOPTERA
apically, the smooth line distinct but not quite entire; elytra parallel,
with straight sides, rounding at apex, about as wide as the prothorax and
slightly more than twice as long, about one-half longer than wide; striz
narrow, the intervals fully four times as wide, with fine and loosely
confused punctures. Length (o") 2.4mm.; widtho.85 mm. Louisiana.
One example.
This species also belongs to the curticollis section, but is much
smaller and with less abbreviated prothorax, apparently somewhat
wider before the middle than at base, in its more parallel, more
obtusely rounded and more finely striate elytra and in general
appearance.
Barilepton Lec.
The following species is allied somewhat to quadricollis, but differs
in the shorter and relatively stouter beak, larger prothorax and
more scanty vestiture:
Barilepton productum n. sp.—Elongate, parallel, strongly convex and
cylindric, moderately shining, deep black, with obscurely rufous legs;
squamules above whitish, fine and sparse on the pronotum but closer
though not dense along the sides, coarser and forming single or partially
double interstitial lines, and more broadly condensed at the base of the
second interval and on the third posteriorly; beneath sparse but distinct,
white, dense on the met-episterna and close but not very dense almost
throughout the last three ventral segments; beak in the male thick,
cylindric, finely, sparsely punctate and shining, very strongly arcuate
basally, less so apically and distinctly shorter than the prothorax, the
antenne slightly beyond the middle; prothorax about as long as wide,
the parallel sides feebly arcuate, rounding and oblique in apical two-
fifths, the subtubulate apex three-fifths as wide as the base; punctures
somewhat small, moderately and unevenly separated, the smooth line
distinct but extending only slightly beyond the middle; scutellum tumid,
nude; elytra exactly as wide as the prothorax and more than twice as
long, with straight, parallel sides, gradually parabolic behind the middle,
not quite twice 4s long as wide; grooves fine but deep, the intervals
with uneven series of small and feeble punctures; male abdomen nar-
rowly impressed medio-basally and more broadly and feebly at the
middle of the last segment. Length (o’) 3.3 mm.; width I.o mm.
Louisiana (southern). One example.
The rather common eastern species, named quadricollis by
LeConte, is very densely clothed above, thus having a widely
different appearance from productum.
Zaglyptus Lec.
In this genus, which includes the most minute of the Barine,
the body is rather abbreviated and very convex, with sparse coarse
BARINZ 515
recurved hairs and widely scattered long erect setae above, the
under surface wholly glabrous. The anterior coxe are widely
separated, the prosternum feebly impressed, the third tarsal joint
narrow and undilated, the claws slender and free and the antennze
slender, with narrow pubescent club, its first joint constituting about
half the mass. The species szlcatus is very stout, with wide deep,
coarsely punctate and sulciform striz; the others are all much less
stout and have series of less coarse elytral punctures, the series
never more than moderately impressed. LeConte gives the
length of the Pennsylvania striatus as 1.8 mm. A specimen from
District of Columbia, which apparently represents this species, meas-
ures 1.65 by 0.7 mm,
The following two species are much more minute and may be
described as follows:
Zaglyptus perminutus n. sp.—Smaller and more abbreviated than
striatus, convex, shining and castaneous; coarse matted hairs of the
pronotum very numerous and conspicuous; beak (0) two-fifths as long
as the body, rather slender, very feebly arcuate, with the antenne barely
beyond the middle, or (2), nearly half as long as the body, smoother
apically, the antenne at about the middle; prothorax fully a third wider
than long, coarsely, densely punctate, the sides converging and rather
strongly arcuate; scutellum as usual in the genus, minute and obtri-
angular, emarginate and sharply bicuspid at apex; elytra barely at all
longer than wide, evenly, obtusely semi-elliptic, a fourth wider than the
prothorax and twice as long, the serial punctures strong and rather
close-set, the series not impressed, except feebly toward the suture, the
intervals smooth and virtually impunctate. Length (co 9) 1.25 mm.;
width 0.7 mm. _ District of Columbia,—Ulke. Three specimens.
Nearly similar to striatus, but smaller and with notably shorter
prothorax; in striatus the more conical prothorax is but little wider
than long in the male.
Zaglyptus atomicus n. sp.—Still more abbreviated than in perminutus
and more pallid in color; beak in the female nearly as in that species
but not quite so long; prothorax shorter, nearly one-half wider than
long, the basally subinflated sides more constricted apically, the punc-
tures not quite so coarse but still denser; vestiture of coarse hairs sparser
and much less conspicuous, not hiding the sculpture; elytra similar in
form but not barely twice as long as the prothorax as in perminutus, but
distinctly more than twice as long as that part; punctures of the un-
impressed striae distinctly coarser and less close-set than in the preceding.
Length (2) 1.18 mm.; width 0.65 mm. Mississippi (Vicksburg). One
specimen.
516 MEMOIRS ON THE COLEOPTERA
Easily distinguishable from perminutus by the shorter, less
pubescent and more densely punctate prothorax and coarser, less
close-set punctures of the elytral series.
I am of the opinion that Eunyssobia Csy. (Euchetes Lec.), sup-
pressed by Mr. Champion, is a valid genus; its habitus is quite
different from that of Plocamus, as can be seen from the figures,
and there are many special differences relating to the beak, pro-
thorax and character of the bristling spines.
ERRATUM
In Memoirs VIII, a ter Bembidion acutifrons, in the first line of the
list at the bottom of page 222, for “‘ Cal.” read Col.
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 PAGE
NCONUTEINION Gasca iy cee © Faktanddett nase 456 ¥ Agontimvmilttare. 242). . Nenads. ear II4
DECVIRGUIS > ~ anes o oney theo ound 457 MCerens DE IsF 4) cick Lowey 1225 129
Agonum Bon...... Tig 2s Oo, LOLs LEO MIGIESCUM: CCs.g20 7 oe alia ee II2
seruginosum Deis... sw .'« 72, 78 IGEGAR: aed crete ats heaters LTT rs) 229
PODUIG ES eae tye trae ee sheed ayer tea leone 116 IOGLOSUM WET: ss, as os.parree areiere 123
PINE AL We At st dicpaiacs cieiepete ote 5! 9 122 Iatitatum Ge Re Eee he eis: sas stan II5
AIMICEUSWICT A 2 ia tlanr< ay mul s\ens 89 AIBC OTs. yak sai cee a tes 104
SPE INGE a ee Tener eehalckcha aca teh dah afar 124 octopunctatum Fab........... 102
SIRVISDION nts Materia s aici Melee 101 OVALICAUCA 1.615) he, Sue, cee eaten 109
AU OUMICANIS rat vay Marc fire tecs sa holds 120 PAGwienm w= 2/37... Aes eee 102, 109
PUALCCATINTIN Glenn ee So era, sate cols a 124 palliatum=Dejs. oso. er 73
DOUCALNUIN ter cca) ofolansd ¥.200 Gi evals 109 parallels. satern. teers satelite 108
brevicolle’ De}... sve eas 120 POUCA. al aceite yeaa I19, 122
DPLEVINSCUlUM ys sie ars sa as II9 picenim Lecr=. 5 eee LD 7p 122
AEN OEE Co csi to iagcs 4 /