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SMITHSONIAN INSTITUTION.

UNITED STATES NATIONAL MUSEUM.

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8

4

NEW SPECIES OF NORTH AMERICAN COLEOP-
TERA OF THE FAMILY SCARAB/EID^.

BV

MARTIN L. LINELL,

Aid, Departmtnt of Insects.

From the Proceedings of the United States National Museum, Vol. XVllI, pages 721-731.

[No. 1096.]

\j^

WASHINGTON:

GOVERNMENT PRINTING OFFICE,
1896.

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NEW SPECIES ('F NOUTir AMERICAN COLEOPTKRA OP
THE FAMILY SCARAB.EID.E.

By 3tATlTlN L. LiNELL,

Aid, Ihitartment of Inaeola,

In rearranging the TJ. S. National Museum collection of North Ameri-
can Coleoptera of the family Scarabieida*, a certain number of forms
were met with among the recent accessions that evidently are nnde-
scribed and should be ])ut on record as additions to our fauna. It Mas
found necessary to erect a new genus for some small species occurring
in the Southwest. A few notes have also been added on previously
described si)ecies.

PINOTUS COLONICUS, Say.

A species widely distributed in Mexico, which diflfers from /*. caroli-
nus, Linnaeus, by male having two tubercles on the front, one above the
other, should bo added to our Texan fauna. A specimen is in the
National Museum collection, taken by Prof. 0. H. Tyler Townsend in
Brownsville, Texas, September 5, 1895.

PSAMMODIUS SCHWARZI, new species.

Oblong, parallel, convex, shining reddish brown; vertex, disk of
thorax, and sometimes sutural region of elytra, piceous. Head mod-
erately coarsely asperate; vertex smooth. Clypeus broadly and deeply
emarginate, without teeth; sides broadly rounded; gena' obtuse,
slightly prominent. Thorax wider than long, not nnrrowed in front;
sides arcuate, the margin indistinctly crenulate; anterior angles slightly
prominent, obtuse; posterior rounded; base slightly arcuate, with vtiy
deep marginal line; disk convex, sparsely and finely punctate, with au
irregular group of coarse punctures (from 8 to 15) each side, and a
small round fovea near the front angles. Elytra as wide at base as tlie
thorax; humeri obtuse; sides nearly parallel; disk deeply striate, striic
distinctly, somewhat crenately punctured; intervals convex, smooth.
Mesosternum opaque, densely punctulate, carinate between the coxa*.
Metasternum smooth, polished, flattened and longitudinally impressed

Proceedings c>( tl.o (Tuitcd States Nntioniil MuseHin, Vol. XVIII— No. lOiiO.

Proc. N. M. 05 40 721

722

NEfV NORTH AMERICAN COLEOPTERA- TANELL.

VOL. XVIII.

at inidtlle. Abdouieu nearly sniootli, with a few coarse punctures at tlio
sides, the last segments with strongly crenato basal margin. Femora
equally incrassate, smootli. Anterior tibia; strongly tridentate; pos-
terior moderately stout, exi)anded at tip, with three rows of small
asi)erate tubercles but no oblique ridges. The i)osterior tarsi nearly
as long as the tibia; the joints decreasing in thickness; the first one
hardly wider toward apex, angular but not compressed, slightly arcu-
ate, fully as long as the tliree following together which are subequal in
length, a little longer than thick, constricted at base; last joint as long
as third and fourth together.

liCngth, 3.0 mm. Seven examjjles from Jacksonville, Florida (col-
lected by Mr. William H. Ashmead), are in the collection of Hubbard
and Schwarz, two of which these gentlemen have presented to the
National Museum.

Types.— ISo. 55J), U.S.N.M.

This species has more strictly the generic characters of Pleurophorua
in the hind tarsi, but must be placed near Psammodiufi bidens, Horn,
as the nearest ally in our fauna. It has the same shape as this si)ecie8,
but is slightly larger and lighter in color.

n

APHODIUS COQUILLETTI, new species.

Shining ferruginous, with lateral and basal margin of thorax and
ely tral suture narrowly black ; tibiae and base of tarsi iufuscate. Head
convex, finely punctate, without tubercles or clypeal ridge. Clypeus
slightly rugose, concave at middle; nmrgiu broadly emarginate, with
a strong acute tooth each side; sides irregularly arcuate, strongly
fimbriate; gense prominent, subangulate. Thorax with the sides
fimbriate, broadly explanate, foveate near the obtuse hind angles;
base distinctly margined, arcuate at middle, emarginate each side at
the angles; disk convex, finely, not very densely, punctate; explanate
sides coarsely, rugosely punctate. Elytra glabrous, fimbriate at mar-
gin; humeri obtuse; strise fine, vaguely imnctate; intervals minutely
rugose, with coarse, irregularly biseriate punctures. Ventral surfiice
finely pubescent, 8[)arsely punctate. Anterior tibiie smooth in front,
very strongly tridentate, not crenulate above; spur slender, curvate;
first tarsal joint very short. Posterior femora sparsely punctate;
tibije with unequal spiuules, the first tarsal joint not longer than the
two following together.

This species belongs to Group I of Dr. Horn and resembles A. mili-
taris, LeConte, but is larger and has the sides of thorax distinctly
explanate and the posterior angles are distinct, although obtuse. It
differs from A. rudis, LeConte, in having distinct basaL margin of
thorax and ditterent punctuation.

Length, 6.5 mm. One example, Los Angeles, California, collected by
Mr. D. W. (Joquillett.

TyiJe.— No. 500, U.S.N.M.

««►

IIW.

I'llUCEEDINGS OF THE NATIOSAL MUSEUM.

723

OCHODi^US MANDIBULARIS, new species.

Ovul, pale ferruginous. Meiitum elongate, eonvex, only inipresHed
at apex. Prosternuni short, ujiindibles strongly but obtusely angu-
lated on exterior margin just before middle. Clypeus with rounded,
simple margin; at base with a strong acute horn; frontal suture indis-
tinet. Front sparsely, moderately, finely i)unt'tate, not rugose; vertex
without ridge. Thorax densely punctato granulate, a round im})reHsiou
at side and median line impressed at basal half. Elytra striate; striie
punctate; intervals feebly convex, punctate; sutural angles obtuse.
Ventral surfa<!e sparsely imnctate. Femora simple; hind tibiae slen-
der, strongly fimbriate; flrst tarsal joint as long as the three following,
slender, slightly curvate.

Length, 7 mm. One example, collected July 19 at V/iuslow, Arizona
(Wickham).

Type.—lSo. 561, U.S.N.M.

Keserables O.frontaHH, LeConte, in form and color, but is larger and
distinct by the arcuate clypeus, the dentate mandibles, the strong
frontal horn, situated higher up on the front than the small clypeal
tubercle in 0. frontalis, and the total absence of vertical carina. I
have seen an exactly similar specimen from Las Oruces, New Mexico,
in tlie collection of Messrs. Hubbard and Schwarz.

BRADYCINETUS MINOR, new species.

Dark ferruginous ; head, margins of thorax and elytra, suture, tibial
and tarsi darker. It differs from B. hornii, Rivers, in possessing a
larger antennal club; clypeus and fiont more narrow in proportion to
their length, the former with margin less rounded, subangulate at the
sides; thorax more shining, somewhat more sparsely punctato; scu-
tellum more narrow and smooth ; elytral strite distinctly more coarsely,
less closely punctate; intervals narrow, convex. Hind tibije, spurs,
carinae of head and thorax, the form and lateral margin of the latter
exactlj' as in the female of B. hornii. Middle tarsi with flrst joint as
long as the two following together (in B. hornii, as the three following).

Length, 7.5mm. One female collected by Mr. E. A. Schwarz at San
Diego, Texas, May 26, 1895.

Type.—^o. 562, U.S.N.M.

Bolboceras farctun and B. tumef actus of our lists have the eyes com-
pletely and broadly divided and should not be congeneric with B. laz-
arus, Fabricius.

GYMNOPYGE, new genus.
(Group Dichelonychini.)

Mouth parts, ventral segments, and coxae of same structure as in
Dichelonycha. Elytra short; humeral umbone prominent; base con-
jointly, broadly emargiuate; side margins expanded vertically or

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724 yjify sftnrii amkiucan coleoptkra—linkll. vclxvih.

broadly lobiMl at basal balF, stronf;Iy conviTfjont posteiioily; apices
separately roniuled. Winj^s ample (in all three species). Propygidiiim
entirely exposed. l>o<ly sbort, in front narrowed more or less strongly.
Abdomen gibbous. Legs, and especially tarsi and claws, less elongate.
Posterior tibia- short an«l stout, with iin obli<pie spinous ridge behind
middle on the exterior side, and lower edge serrate and spinous.
Tjipe. — (i. hop I i (('for HI in, new species.

GYMNOPYGE HOPLI/EFORMIS, new species.

(/val, strongly narrowed in front, brownish testaceous, head and
thorax piceous, hirsute with whitish hairs, longer on ventral surface;
long, appressed, white hairs on sides of abdomen and propygi<lium.
Anteiiuie 9 Jointed, ferruginous; club bhick. Head rugosely punc-
tate; clypeus short, separatetl by a straight impressed suture; margin
strongly retlexed, truncate in front; side angles rounded. Thorax
strongly convex, broader than long, emarginate at apex; sides obtusely
subangulate just behind the middle; hind angles very obtuse; base
arcuate; disk coarsely but not densely puiuitate, a long hair arising
from each puncture. Scutellum broad, rountlod, punctate. Elytra
rugosely punctate and hairy; sutural stria somewhat distinct and
traces of three or four more striie on the disk. Propygidium finely
punctate, densely covered with long appressed white hairs; pygidium
convex, shining, sparsely punctate at base, smooth at apex. Ventral
surface sparsely and finely pun(!tate. Metasternum at sides more
coarsely punctate. Front tibioi with upper tooth obsolete; hind tibiie
very stout, asperately punctate and coarsely serrate on the inferior
margin ; tarsi short, claws moderately long.

Length, 5 to 6 mm. Numerous examples collected by Mr. D. W.
Coquillett in Mohave Desert, Kern County and Los Angeles County,
California. An individual from San Diego is entirely black, but does
not difter otherwise.

Tyjie.—^o. 563, U.S.N.M.

GYMNOPYGE PYGM/EA, new species.

Elongate oval, sparsely hirsute, narrowed in front, pale ferruginous.
Anteunal club black. Head piceous, thorax infuscate. Antenna?
8 jointed; claws of posterior tarsi short; anterior tibise distinctly tri-
dentato. Elytra sparsely, irregularly subseriately punctate.

Length, 5 mm. Two examples, southwestern Utah. (From Charles
Palm, of New York.)

Types.— ^o. 504, U.S.N.M.

GYMNOPYGE COQUILLETTI, new species.

Oval, hirsute, narrowed in front, pale ferruginous. Antennal club
and head piceous, tarsi slightlj' infuscate. Differs from G. hopUcv/ormig
in larger size, more elongate form, head cribrate with indistinct clypeal

!►

IWS.

rnovEKuistis <tF riiic xati tXAL Mrsh:r.yr.

72r)

Kuturi>) anteriur tibia- tiidrntato, antciiiiii' 8 jointtMl, sciitclliiiii iiioru
iniirow, not transvcrst*, and hiiul tibia' Iiardly as st(Mit. Klytia sub
nipKSt'ly lanictate, with faint tratos of stria*.

LiMifftli, 7 nun. One cxainplo, Colorado Dt'sert, San Diop) County,
California, collocti'd by Mr. I). W. Cocjuilb'tt.

Typc.—^o. 505, IJ.S.N.M.

DIPLOTAXIS RUFA, new species.

Ovato, sliffhtly broader boliind, lufoferrn^jinous, sliininj'; jjlabrons
above. Front and clypons (!onvex, cribratoly punctate; the latter
8ubrectangular, truncate, margin narrow, but distinctly retlexed.
Antenine testaceous, 10 jointed, club as loiij? as the funicle. Thoiax
one-half broader than lonjj:, narrowed in front, coarsely, moderately
closely punctate; sides obtusely 8uban<;ulato at middle, slightly
sinuate before and behind; angles acute; impressions at the angles
feeble. Scutellum sparsely punctate. Elytra coarsely, but not very
densely, jmnetate; stria-i regular at the sides; punctures confused on
the intervals; costic with a series of minute punctures. Pygidium and
ventral surface coarsely i)unctate, the punctures with short hairs.
Legs setose, femora 8i)arsely, moderately coarsely punctate; tibiae,
esi)ecially of the posterior legs, roughly punctate; the anterior tibiic
with upper tooth very small, the others strong, acute; the anterior
tarsi moderately long; the middle tarsi very long and the posterior
tarsi short, with basal joint incrassate, roughened; claws cleft, the
inferior part broader, with recurved apex.

Length, t) mm. Three examples, Georgiana, Florida.

Types.— :^o. 5()(J, U.S.N.M.

This species resenddes />. subcostala, Blanchard, in the form of thorax,
but is smaller, has the thorax less constricted and more coarsely i>unc-
turod, and the convex cribrose head with truncate clypeus is entirely
different.

Note. — In comparing the original descriptions, I have conic to the
conclusion that JJiplotaxis castanea, Burmeister, is identical with J).suh-
costata, Blanchard, U.georgkv, Blanchard, Avith I). Uberta, Cermar, and
corpulenta, Burmeister, with B. tristis, Kirby. The last-mentioned
names in each case have the jiriority.

LACHNOSTERNA ELONGATA, new species.
(Group Ephelida, Horn.)

Very elongate, cylindrical, finely and sparsely pubescent; rufotesta-
ceous, moderately shining. Head as broad as anterior margin of tho-
rax, infuscate, convex, densely and coarsely i»unctate, witn margin mod-
erately reflexed, distinctly emarginate. Antennse 10-jointed. Thorax
rather short, eveidy convex, linely and densely punctate; sides strongly
arcuate and narrowed in front, parallel behind; anterior angles obtuse,
posterior rectaugular. Elytra subopaque, finely and densely, somew hat

<►

726

NKIV SOUTH AMKlilCAN COLKni'THIlA—llSKLL. vol. xvm.

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niffosely imnctato, (lisral rostn' ftiiO)!*'. I\v>fi<nn?n very ronvpy, lonjjcr
tliiiii broiul, iiiiiTowi'tl toward aix'x, ratlior coiirsely, not donscly |iunc-
tttU\ MefastiM-miin spais(!ly liairy, Hiiely, not dcnNely |tuii(tatc. Claw-s
with a t'c>(>l>lu sulibaHal tootli.

Mnh; — Antrnnal club Hlinlitly lonotM* than tlio ston). Abdomen
8li^litly tlattoned; ponnltiinate so^niuMil broadly (Miiar^'inate, with the
mar},'in at nii<Idlo depressed, slifjiitly ronj;hene(l ; last s<'fjinent trnncat*',
vagtu'ly (ioneave, sparsely }i;ranulate. Fixed tibial spur veiy short;
outer lonj;, lanceolate. (Jlaspers sy in metrical, <let,.!y biUd, the outer
branch short, lateral, the inner biant^h lon^, strai};'i)t, with a strong tooth
towanl ai)ex on inner side.

Length, l(i mm. Two nude examples, l<'lorida. ac<!es»ion li31o3 (from
Charles Palm of New York).

7'^2,t'«._jfo. 507, IJ.S.N.M.

LACHNOSTERNA PARVA, new species,
((jiroiip Uphvl'ulii, Horn.)

Very eloufifate, cylindrical, dark brown, shininpf, glabrous above.
Head piceous, short, moderately broad, deeply and si)arsely punctate;
clyi)eus short, concave, Hi)ar.sely punctate, with nuirgin moderately
rcHexed, feeldy emarginate. Antennae 10-jointed. Thorax short,
evenly convex, sparsely and not coarsely punctate; lateral margiiiH
parallel behind, strongly rounded in front; anterior angles obtuse,
l)osterior rectangular. Klytra rather <'oaraeIy, rugosely punctate;
discal costal very feeble. Pygidiiim narrowed toward apex, as long
as broad, densely, moderately coarsely, punctate, smoother at apex.
Metasterr.um densely and linely puncitate, with long hairs. Abdomen
sparsely and finely punctate. Claws with a small acute tooth before
the middle.

Male. — Antennal club longer than the stem. Abdomen flattened
along the middle; penultinnite segnient asperatcly rugose, broadly
ennirginate, obliquely pli(!ate each side; last segment deeply concave
at middle, with an elevated cusp each side near the margin within the
concavity. Fixed spur very short, nearly atrophied; outer spur long,
slender. Claspers synimetrical, short, undivided; apices triangular,
obtusely pointed, grooved on the outside.

Length, 12 mm. Two male examples (accession 23.S53) from Mr.
Charles l*alm, of New York.

Types.— ^o. o(iS, U.S.N.M.

This species re.semblea L. hoops, Horn, in size, color, and form, but
has entirely different structural chara(tters.

LACHNOSTERNA ALPINA, Schwarz, MSS.

(Group Fiisea- Fratenia , Horn.)

Ovate, robust, broader behind, rufocastane(ms, shining. Head small,
slightly convex, piceous, moderately dens»^ly and finely punctate;
clypeus flat, rather densely, not coar.sely iv,:ictate; distinctly emar-

i»\n.

pnociiKitiNds OF nui i\ATn ty.iL mtsi:i wr.

727

fj;inatR; itiiirgin iuiin)wly lellexod. Thoiux short, lnoadest at base;
Hides broadly loiuidtMl, seriatim iiiul spaisoly <'iliat«>; i\\h'K iiiiu'li widiu*
than the lu>ad; anterior ati^h^s slightly prodiiciMl: piiiict nation evenly
distrihnted, moderately eh»sely plaeeil, rather line; punetnres leet>ly
innbilieate. Sentellntn sparsely and linely punt^tale. I^'lytra not fim-
briate, llnely, not closely |)nnetate, transversely rngose near tln^ snturo
und behind the humeral umbones. 1\> <;idi(im transverse, sparsely and
ttiiely pnnetate, Metasterniim very densely punetulate, with lon^',
dcuise, yellow hairs. Abdomen sparsely and obsoletely punetulat*'.
Posterior tibia' slemhM-, witli very t'eolih ridges. (3Iaws stronj^ly
curved; tooth snbmedian, snail, acute, (iast Joint of nuixillary pali^i
lUHiform, not impressed.

Mah'. — Antennal club nearly as lonf>' as the stem. Abdomen flat-
tened at ndddle; penultimate sejiinent witli a stronj;' ar(!uate rid<i:e,
distant from apical nuirp;in; last segment with a cu[iuliforni, smooth
fovea. I'Mxed spur spatulate, about half as long as the slender exterior
spur. The elaspers retsall those of L. ilubin, Smith, but are much
smaller and less twisted.

Tins spe<'ies resend)les A. irrnns, but has a dilferent clypeus, much
finer punctuation, nonlind)riate elytral margin, slender tibia' ainl
ditterent sexual chara<;ter8. (Note on habits, sve Schwarz.')

Length, about l.Siiun.

I have examined four male exaniples, collected near Alta, [I tali, at an
elevation of 1>,000 to 11,(K)0 feet, by Messrs. E. A. Schwar/, and 11. (1.
Hubbard. One has been presented to the National Museum by these
gentlemen.

Type.—^o. rm, U.8.N.M.

LACHNOSTERNA GRANDIOR, new species.
( Grdup fuHca-yuijom, Horn. )

Hobust, ovate, depressed above, rufocastaneous, shining. Head
broad, very densely punctate; elypeus (as in L. hnrtla, Horn) flat,
densely punctate, deeply em.arginate; margin narrowly but distinctly
reHexed. Antenna' 10-jointed. Tlun-ax very short and broad, slightly
narrowed behind, coarsely and densely, but not contluently, punctate;
punctures umbilicate; median line smooth; side margins serrato, sub-
angulatc at middle ami convergent in front; anterior angles subobtuse.
Elytra finely punctate, slightly rugose; sutural and nmrginal costal
Avell defined, the others obsolete. Pygidium rounded, sparsely, vaguely
punctate. Mctasternum densely punctate, with long, moderately dense
hairs. Abdomen sparsely ami tijudy punetulate. Claws with a strong
median tooth. La.-M> joint of maxillary i>alpi fusiform, not impressed.

Mole. — Antennal club as long as the stem. Abdomen flattened at
middle; penultimate segment broadly emarginate, with a strongly ele-
vated rugulose, anaiate ridge, behind which is a deep, broad excava-

<V

Proc. Ent. Sec. Wiisli., II, p. 242.

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NEW NORTH AMERICAN COLEOPTERA—LINELL.

VOL. XVIII.

tion; last sej^ment Lroiidly coiicavo. Fixed si)ur triangular, acute;
exterior spur one-lialf longer, slender. The ehifspers are unsyniiuetrieal,
liij;lily developed, associating the s])ecies with the hornii-rugom group,
but they are still more twisted than in any previously described species.

Length, -i> mm.

Type. — No. 570, U.S.N.M. One example, Shrevei)ort, Louisiana;
collected by F. W. Iklally.

This species, the largest Lachnostenia in our fauna, resembles in form
L. quadnita, Smith, but is nuu'h larger, has different clypeus and punc-
tuation, but thorax particularly distinguishes them, being subangulate
and crenulate in L. (jrawlior.

LACHNOSTERNA RUGOSIOIDES, new species.
(Group J'nsca-rufiom, Horn.)

Oblong, broader behind, moderately robust, rut'ocastaneous, shining.
Antenna' 9-jointed. Clypeus densely and coarsely punctate, acutely
emarginate; margin narrowly retlexed. Front somewhat less densely,
coarsely punctate. Thorax widest at middle, obtusely angulate at
sides, narrowed at base, more obliquely narrowed in front; margiu
slightly crenulate, sparsely ciliate; disk convex, moderately closely,
coarsely punctate; punctures umbilicate; the median line and small
sjiaces on each side smooth. Elytra finely punctate, rugulose; discal
costse obsolete. Pygidium longer than in L. rugosn, convex, very
shining, sparsely and finely punctate. jNletasternum densely punctate,
with sparse short hairs. Abdomen sparsely, obsoletely punctulate.
Claws very strongly curved, with a strong median tooth.

j\ral€. — Antennal club very short. Abdomen flattened at middle;
penultimate segment with a straight, acutely elevated, overhanging,
transverse ridge at middle, and the posterior nmrgin broadly and
decjdy con(;ave; last segment concave, asperately granulate; fixed
spur very long, slender, fully ecpial in length to the exterior spur.
Claspers aftei- the type of L. nifiosa, but ditl'erentl}^ twisted, and the
extreme apices i-rolonged, acute, and recurved.

Length, 18 mm. One example, collected by myself on Long Island,
New York.

7//^>f.— No. 571, U.S.N.M.

This species resembles su])erficially a small L. rugona, but is abun-
dantly distinct by the characters above.

LACHNOSTERNA MINOR, new species.
((Jroiip halia, Horn.)

Oblong, slightly broader behind, glabr<ms above, rufotestaceous,
shining; head and thorax darker. Clypeus acutely, but not deeply,
emarginate, moderately closely, imt coarsely, ]mnctate; margin rather
narrowly retlexed. Front more densely punctate. Antennic 9 jointed.
Thorax convex, narrowed in front; sides regularly arcuate from base,

wmm

J KIT).

rnocKi'JDiNas of the national museum.

729

not creiiate; disk moderately closely and coarsely, soniewliat irregu-
larly, punctate; basal channel distiuctat the sides. Elytra alutaceous,
slightly rngiilose; punctures finer and more closely i)laced than those
of thorax. Pygiilium sparsely and finely ])unctulate. Metasterniim
finely and densely punctulate, with long yellow hair. Abdomen
sparsely ]mnctulate at the sides; punctures with short hairs. Claws
arcuate, with a strong median tooth. Last joint of maxillary i)alpi
fusiform, not impressed.

Male. — Antennal club as long as the stem. Abdomen longitudinally
concave; penultimate segment with a deep semicircular fovea, each
.side of which is an oblicjue elevated cusj); last segment with an
impressed line at middle. Fixed spur nearly half the length of the
exterior one, strongly curvate. Claspers with the apices long, slender,
acute, strongly curvate, simi>le on the right (1 with a strong inferior
basal hook on the left.

Length, Ki nun. One example collected by Mr. F. F. Crevecoeur,
Oiiaga, Kansas.

Type.—^o. 572, U.S.N.M.

What Professor Smith' figures as Lachnosterna fratcrna, female, is
the female of L. vora, Smith. The real female of L. fmterna has the
pubic process furcate at apex, after the manner of X. hipartita, but not
quite as deeidy.

A male of Laehno-steriia (liffinin, Blanchard, collected by Miss Etta
Braly at Fayetteville, Arkansas, has the antenme l(>-jointed.

PHYTALUS CAVIFRONS, new species.

Male. — Elongate, cylindrical, shining, pale rufo testaceous. Head
darker in color, broad; eyes large; front convex, moderately coarsely,
not densely punctate; clypeal suture strongly biarcuate, >'ery deeply
inipresse<l from eye to eye; clypeus concave, sjjarsely i)unctate; mar-
gii; broadly refiexed, rounded at the sides, slightly emarginate at mid-
<llo. Antenna' 10-jointed, second Joint globose, third, fourth, and fifth
cylindrical; sixth and seventh transverse; club as long as the funicle.
Last Joint of maxillary ]»alpi large, flattened above, subtruncate at
apex. Thoiax a little more than twice as wide as long, a little nar-
lowed in front; sides arcuate at middle, not crenulate; base without
impressions, finely nnngined; disk convex, regularly, sparsely, rather
finely punctate. Elytra slightly wider than thorax, sparsely and
liiely punctate; sutnral costa well marked; discal costa' distinct,
smooth ; submarginal obliterated. Tygidinm convex, sparsely, vaguely
punctate. Frothorax beneath sparsely, not deeply, punctate. Meta-
fiternnm very sparsely clothed with short hairs, si)arse]y i)nnctate at
middle, a little more densely at sides. Abdomen convex, very sj)arsely
hairy, almost smooth at middle, sparsely ])nnctnlate at sides; last seg-
ment with a cupuliform fovea. Legs long and slender, anterior tibiae

'Pioi\ r. S. \iU. Murt., XI, i>l. 1,1V, fig. 43.

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730

NEW NORTH AMERICAN COLEOPTERA—LINELL.

VOL. xvrir.

1895.

i.; \

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obtusely tridentate, upper tooth small, apical tooth iu the axis of tho
tibia, obtuse at apex. Posterior femora compressed; tibia3 with an
oblique fine acute ridge at middle, furnished with long, slender, not
closely set spines; basal ridge very short, with two or three small
spines; apex squarely truncate exteriorly, with a dense row of fine
spines; spurs movable, obtuse at .apex; the exterior one somewhat
longer. Tarsi, esi)ecially on the front legs, nuich longer than tho
tibif.^, clothed beneath with dense, long, somewhat stiff hairs. Claws
subequally cleft, inferior part a little broader and oblique at apex.

Length, 12 mm. Two examides, collected May 24, 1895, by C. H.
Tyler Townsend, at Brownsville, Texas.

TijpeH.—^o. 573, U.S.N.M.

Female. — Differs from the juale described above as follows: Color
darker ferruginous, infuscate on head and thorax, punctuation dis-
tinctly coarser throughout, dypeus less concave, coarsely and densely
punctate. Antennal club slightly shorter. Pygidium longer, gibbose
at middle. Last ventral convex, subemarginate at apex. Legs shorter
and stouter; anterior tibia* with upper tooth stronger, apical tooth
obliquely truncate and notched at apex; posterior tibial spurs longer,
more lanceolate.

One example, collected Juno 1 1, at Brownsville, Texas, by Prof. C. H.
Tyler Townsend.

Type.—^o. 574, U.S.N.M.

LISTROCHELUS PULCHER, new species.

Male. — Ovate, distinctly broader behind, dark rufocastaneous, densely
covered with a silvery-gray coat, except the head, disk of thorax, hume-
ral umbones, apex of pygidiuni and legs ; clothed with sparse, short
hairs in the punctures. Front flat, densely and coarsely, not conflu-
ently imnctate; clypeal suture finely impressed, bisiuuate; clypeus
concave, less densely punctate; margin semicircularly rounded and
broadly refiexed. Anteuuie ferruginous, 10-jointed; club longer than
the funicle. Thorax nearly twice broader than long, narrower at apex,
convex, shining on the glabrous median part, regularly, moderately
densely, not coarsely, punctate; sides regularly arcuate, feebly ser-
rate and fimbriate with long hairs; angles obtuse. Elytra moderately
coarsely, sparsely punctate ; costal obsolete; margin sparsely fimbriate.
Pygidium convex, sparsely punctulate, subtruncate at apex. Meta-
sternum and the coxa>. clothed with long, dense, yellowish white hairs.
Abdomen sparsely aTid finely punctulate; second and third segments
slightly concave at middle, fourth with a median transverse gibbosity,
longitudinally strigose; fifth gibbous at base, on the sides with two
or three oblique elevated carina*, strongly constricted on apical half;
sixth short, transversely constricted, with sparse hair bearing punc-
tures; apical margin ciliate. Legs moderately stout, sparsely bristly;
anterior tibiie strongly tridentate. Posterior tibia; scarcely fimbriate.

1805.

PROCEEDINGS OF THE NATIONAL MUSEUM.

731

H.

Spurs rather slender, outer broader and longer, with pelhicid margin.
Posterior tarsi longer than the tibia; tirst joint stout, consti'icted at
base. Claws pectinate along a double margin ; outer anterior claw with
a strong tooth near the apex.

Length, 17 mm. One example, collected by C M. Porter, in Skid-
more, Texas, April 2, 1895.

Type.—^o. 575, U.S.N.M.

Female. — Form, size, and sculpture of the male, but differs as follows:
Antennal club slightly shorter. Thorax with a median white line at
base. Pygidium flat, deeply, longitudinally channeled before apex,
with coarse setigerous punctures at and near the margin. Abdomen
very convex, broadly glabrous and polished along the middle; fifth seg-
ment constricted at the sides, with a round gibbosity at middle near
apical margin and with a transverse row of setigerous punctures behind
the gibbosity, interrupted at middle; sixth very short, coarsely punc-
tate. Anterior and middle claws with a strong tooth near apex and
cojirsely serrate at base. Posterior claws dissimilar, the inner without
tooth, i^ectinate, the outer like the anterior daws.

One example, from Texas, in collection of Mr. II. Ulke.

This species differs from L. mucoreun, LeConte, by its color, broader
form, distinctly broader thorax, more concave and rounded clypeus, and
the sexual characters of abdomen and pygidium.