COLEOPTERA. 125 BELONUCIIUS Nord.
B. moqilillUS n. sp. — Form rather slender, depressed. Head and prothorax black, mandibles fuscous toward tips ; antennae dark fuscous, piceous-black at base ; elytra and abdomen rufous, last two segments above and beneath black ; pubescence of elytra and abdomen sparse, rather fine, pale, not conspicuous, that of the head and prothorax in the form of very sparse coarse erect setae. Head small, slightly longer than wide ; eyes elongate, oval, not at all prominent, at more than their own length from the base ; sides behind them feebly convergent and nearly straight, then strongly and broadly rounded behind to the neck ; interocular surface feebly convex, shining, extremely minutely strigato-rugulose, having two setigerous punctures near the middle on a line through the middle of the eyes, and two or three just above each eye, also a very feebly impressed median canaliculation becoming stronger toward the labrum ; the latter very short and broad, strongly bilobed, each lobe broadly rounded anteriorly and bearing two very long and several small setae ; epistoma broadly and feebly sinuate anteriorly ; mandibles long and prominent, nearly straight externally toward base, arcuate at the apex ; antennae two-thirds longer than the width of head, outer joints gradually and somewhat feebly incrassate and covered very densely with extremely short fulvous pubescence and coarse sparse erect setae, basal joint slender, four-lifths longer than the second which is more than twice as long as wide, second and third equal, strongly clavate, fourth very short, very slightly longer than wide, tenth scarcely longer than the fourth, about one-third wider than long, eleventh obliquely produced at tip ; maxillary palpi very slender, piceous-black toward base, pale reddishtestaceous toward tip, fourth joint very slender, one-half longer than the third ; under surface polished, excessively sparsely and minutely punctulate. Prothorax scarcely narrower than the head, just visibly longer than wide ; sides nearly parallel, feebly arcuate ; base and basal angles broadly evenly and continuously rounded ; apical angles inflexed, rounded ; apex broadly and feebly arcuate ; disk moderately convex, polished, with two straight medial rows of five punctures not attaining the base, and, on each side, an exterior very irregular row of three or four punctures, also three or four along the edge at each basal angle. Elytra at base distinctly wider than the pronotum ; sides slightly divergent posteriorly and feebly arcuate ; together broadly angularly and distinctly emarginate behind ; disk slightly wider than long, shining, rather finely evenly and sparsely punctate. Abdomen diminishing but very slightly in width posteriorly ; border strongly inclined, rather thin and very strong ; surface feebly and sparsely punctate ; under surface more strongly so, especially along the bases of the basal segmentswhere the punctures are abruptly large, deeply impressed and close. Legs rather long ; anterior coxae extremely large, extremely highly polished^ glabrous except near the tips, almost as long as the femora ; the latter are slender and armed along the inner edge with a short row of erect stout black spines just beyond the middle ; corresponding tibiae slender, armed at tip with two strong very nearly equal spines and many shorter and more slender spinules ; corresponding tarsi not dilated ; first joint of the posterior tarsi Cont. Part II. 5 Januaky, 1885.
126 NORTH AMERICAN much shorter than the last ; middle coxae widely separated by the mesosternum which has between them a broadly Innate area abruptly declivous along its posterior arcnate edge and feebly produced in the middle, bearing on its face a transverse arcuate row of setae.
Male. — Sixth ventral segment broadly and feebly sinuate at tip, sinus feeble, evenly rounded, about ten times as wide as deep. Female. — Prothorax slightly wider than the head ; sixth ventral segment very broadly and evenly rounded behind.
Length 7.5-8.0 mm.
Arizona (IMorrison), 2.
Tlie description is drawn from the male ; the species bears a great resemblance to Philonthus or Actobius, but appears to me to belong to Belonuchus on account of the spines along the inner edge of the anterior femora.
XAIVTHOLINUS Serv.
X. f IICOSIIS n. sp. — Form very slender ; pubescence pale, short, very sparse, erect and setiform ; head black above and beneath, oral organs and antennae dark rufous ; pronotum pale reddish-testaceous ; elytra very dark testaceo-piceous ; abdomen above darker than the elytra, very dark piceousbrown, beneath slightly paler. Head very long and narrow, one-half longer than wide, sides nearly parallel, very feebly swollen behind the eyes ; basal angles rather narrowly rounded ; base transverse ; eyes very small, circular, not prominent, nearly touching the base of the mandibles, nearly three times their length from the basal angles ; interocular surface strongly and cyliudrically convex, polished, broadly impnnctate along the middle, and narrowly impunctate in a slightly oblique line from the eyes to the basal angles on the sides, elsewhere above coarsely and rather loosely punctate, punctures strongly elongate ; beneath more finely aud remotely punctate, punctures nearly round ; fourth joint of the maxillary palpi much longer than the third, third finely acuminate, swollen slightly toward base ; antennae scarcely longer than the head, basal joint distinctly longer than the next four together, more than four times as long as wide, rather strongly arcuate downward, second slightly longer than wide and slightly narrower than the first, third and fourth sub-globular, slightly narrower than the second, joints fivi! to ten increasing in width, nearly equal in length, the former very slightly wider than long, the latter nearly twice as wide as long, eleventh as wide as the tenth, slightly longer than wide, very obtusely conoidal, joints one to three glabrous, coarsely and sparsely setose, remainder very finely and densely pubescent, pubescence very short ; neck narrow, swollen. Prothorax about equal in width to the head, shorter than the same, about onethird longer than wide ; sides very feebly convergent posteriorly and very feebly arcuate from above, sinuate laterally ; apex sligiitly longer than the base, broadly triangular; apex truncate at the junction of the neck, base broadly arcuate ; basal angles rather broadly rounded, apical less broadly so ; disk polished, having a very irregular line of six punctures exclusive of the minute basal one, and a lateral discal row of four near the middle ; very
COLEOPTERA. 127 strongly convex and very strongly declivous toward the apical angles. Elytra at base scarcely as wide as the pronotum ; sides rather feebly divergent and almost straight ; disk rather depressed, one-fourth longer than wide and very slightly longer than the pronotum, polished, very finely feebly and sparsely punctate, punctures aggregated near the suture, and having a distinctly linear arrangement near the flanks, middle portions impunctate. Abdomen at base very slightly narrower than the elytra ; sides nearly parallel and very slightly arcuate ; border narrow and nearly vertical ; surface sub-cylindrically convex, polished, just visibly reticulate, sparsely very minutely and evenly punctulate. Legs rather slender, dark rufous; anterior tarsi but very slightly swollen. Length 3.9 mm. Cape May, New Jersey, 1.
The frontal grooves are long and well developed ; the under surface of the head is coarsely rather feebly and obliquely strigose ; the integument of the pronotum is so thin and transparent tiiat the complicated system of muscular attachments can be most clearly studied thi-ough it. I am at a loss to place this species in Dr. LeConte's table, but there is a probability of its coming naturally after emmesus ; it is the smallest of the genus which has been described from the United States, being somewhat shorter tlian nanus Lee.
There is a form mentioned by Dr. LeConte (Trans. Am. Ent. Soc. 1880, p. 173), which is fusciceps (Fauvel i. litt.), and which he refers to emmesus as a smaller and more slender race. I do not tliink the present species can be the one referred to as fusciceps, as I cannot conceive of the association oi' emmesus sind fucosus in any way; they differ in almost every character, and the merest glance will serve to distinguisii them ; one point deserves special notice besides the very much more flattened form of emmesus, it is that the gular sutures meet at one-fourth the length of the post-mental portion of the head from the posterior margin of the same in the latter, while in fucosus they meet before the middle of this area ; the surface in question is strongly and closely punctate and perfectly smooth in emmesus, and is strigose, and rather feebly and very sparsely punctate in fucostis.- CRYPTOBIUM Mann.
C. capito n. sp. — Form robust, rather depressed. Color throughout dark brownish-red ; head slightly more castaneous and blackish anteriorly; integuments somewhat translucent ; legs much paler and more llavate ; antennae dark rufo-testaceous, palpi much paler ; pubescence sparse, coarse and setiform on the head and pronotum, more abundant at the sides, more dense finer and evenly distributed on the elytra, very dense long fine and conspicuous on the abdomen, plumbeous in color. Head large and con-
128 NORTH AMERICAN spicnous, mucli longer thaiiMide; sides behind the eyes xiarallel and very strongly arcuate ; at a distance behind the eyes equal to the length of tlie latter it is distinctly widest ; sides convergent slightly toward the neck which is almost as broad as the pronotum ; eyes rather small, slightly prominent, in great part visible from above, oval, evenly rounded anteriorly ; interocular surface depressed, flat anteriorly, highly polished, coarsely evenly and rather densely punctate ; punctures round, sub-variolate, almost as wide as the interspaces ; between the antennae there is a large area having only a very few widely scattered punctures, with very feeble punctulations in the interspaces ; antennae very long and slender, one-third longer than the head, basal joint very long, slender, slightly enlarged toward tip, feebly sigmoid and longer than the next four together, second shorter than the third, as long as the fourth, joints eight to eleven decreasing slightly in length and increasing in width, the former about three-fourths longer than wide, strongly narrowed toward base, the latter oval, one-third longer than wide ; maxillary palpi long, second joint slender, longer than the third, strongly arcuate, third conical, rather slender, narrowed toward base, fourth conical, nearly as broad at base as the tip of the third, acute at tip, two-fifths as long as the third ; labial palpi very small and slender, last joint fine and acicular ; under surface iinely and confusedly rugulose, finely rather sparsely and feebly punctulate, slightly swollen along the gular sutures; mandibles very long, tapering and acute. Prothorax distinctly shorter than the head, narrowed scarcely perceptibly from apex to base ; sides evenly and moderately arcuate ; apical angles narrowly rounded, basal rather broadly so ; apex and base nearly transversely truncate, extremely narrowly margined ; disk five-sixths as wide as the head, scarcely one-fifth longer than wide, moderately convex, highly polished, finely feebly sparsely and irregularly punctate, more serially so near the broad median impunctate area. Elytra at base as wide as the pronotum, slightly wider than thi; base of the latter ; sides feebly divergent posteriorly and nearly straight ; together broadly roundly and strongly emarginate behind ; disk nearly flat, shining, slightly longer than wide and very slightly longer than the pronotum, coarsely strongly evenly and densely punctate. Abdomen at base as wide as the contiguous elytra ; sides moderately arcuate ; border extremely strong, nearly erect at base, rapidly becoming almost obsolete at the apex of the fifth segment ; surface feebly convex, very moderately shining, finely evenly and rather densely punctate, transversely very minutely and rather strongly strigate. Legs slender ; femora long and slender, strongly compressed, narrow ; first joint of the posterior tarsi as long as the next two together. Prosternum very strongly and acutely carinate posteriorly. Under surface much paler than the upper.
Mule. — Fifth ventral segment broadly and extremely feebly emarginate behind ; sixth deeply incised at apex, incisure as deep as wide, sides sinuate and arcuate just before the anterior angle which is very acutely rounded, apical angles slightly rounded.
FciiKile.—Unknown.
Length 9.0 mm.
JtMikinlown, near Pliil;ul('l|tliiii, 1.
COLEOPTERA. 129 This very fine species should evidently be placed immediately after tumiditm in Dr. LeConte's table of the genus Cryptobium. The very large elongated head, distinctly widest behind the eyes, very long slender antennae and pale coloi", separate it from other forms in this neighborhood.
C. COllvergens n. sp. — Form rather slender, rather feebly convex ; sides parallel ; head and prothorax piceous-black ; elytra dark rufo-piceous ; abdomen nearly piceous-black, slightly paler and more rufous toward tip ; pubescence rather long, coarse, erect and bristling over the entire body, somewhat abundant and nearly evenly distributed, pale fulvous. Head moderate in size, much longer than wide; eyes rather small but convex and prominent; sides continuous in outline with them behind, distinctly convergent toward the neck which is not two-thirds as wide as the width at the eyes, nearly straight toward the eyes, more arcuate behind ; just in advance of the eyes the head is scarcely three-fourths as wide as across the latter, forming a short very transverse epistoma the sides of which to the antennae are feebly convergent and straight, transversely truncate anteriorly ; supraantennal tuberculations very strong and conspicuous, front between tliem sparsely and irregularly punctate, shining, minutely granulose ; occiput coarsely and evenly punctate, moderately convex, polished, minutely and feebly strigato-retieulate ; punctures round, separated by less than twice their widths in the middle, becoming much more dense finer and very confusedbehind the eyes where there is on each side two large areolate puncturesbearing long erect setae ; between them extending longitudinally from the eye there is a broadly rounded feeble ridge ; under surface miniitely ^ticulated, rather finely sparsely and evenly punctate, not elevated along tlie gular suture ; maxillary palpi rather long and slender, second joint slender, slightly ilattened and feebly bent, equal in length to the third which is slender, conical, feebly narrowed toward base, truncate at tip, nearly four times as long as wide, fourth joint very small, subulate, conical, much narrowerthan the apex of the third and received partially within it, but slightly more than one-fourth as long as the latter; antennae rather slender, very feebly incrassate, longer than the head, very dark rufous, basal joint feebly sigmoid, scarcely longer than the next three together, second much shorter than the third and very slightly longer than the fourth, the latter scarcely more than two-thirds as long as the third, first two joints glabrous and sparsely setose, the remainder very finely pubescent throughout and sparsely setose. Pro'horax very small, scarcely more than three-fourths as long or wide as the head ; sides parallel and feebly arcuate ; apical angles acutely rounded, basal rather strongly and evenly so ; base broadly and very feebly arcuate; apex broadly sinuate ; disk broadly convex, about one-fourth longer than wide, rather coarsely closely and unevenly punctate ; broad median line impunotate, punctures more sparse toward the base. Elytra at base distinctly wider than the pronotum, slightly narrower than the head ; sides parallel and nearly straight ; together broadly roundly and moderately sinuate behind ; apical angles evenly rounded ; disk very broadly and feebly convex, distinctly longer than the pronotum, more than one-fourth
130 NORTH AMERICAN longer tlian wide, shining, moderately coarsely very evenly and rather densely punctate ; punctures round, impressed, generally distant by twice their widths. Abdomen at base just visibly narrower than the contiguous elytra ; sides parallel and very feebly arcuate on the first four segments ; border nearly equal throughout the same segments, very strong, moderately deep ; surface feebly convex, finely very strongly evenly and rather sparsely punctato-asperate and transversely finely and strongly strigate, shining ; setae at the sides and tip very long, strong and bristling. Legs long and slender ; femora very slender, pale flavate, remainder pale rufo-testaceous, first joint of the posterior tarsi much shorter than the next two together, first four decreasing uniformly in length. Body not paler beneath. Prosternum obtusely angulate behind, angle not at all rounded and very strongly elevated, elevated portion narrowly and feebly carinate. Male.—Unknown.
Female. — Second and third ventral segments each with a very short transverse posteriorly arcuate eroded fold in the middle of the disk, about onesixth as long as the width of the segments, and bearing a very dense line of erect stiff setae ; sixth segment very broadly rounded belaud, transverse in the middle.
Length 8.0 mm.
Near Camden, New Jersey, 1.
Under the supposition that the narrowing of the head behind the eyes is not a constant character, which however I have no reason to suspect, the above species would fall naturally immediately after despecfiim in the table referred to above ; if, however, we consider this as a rigid and constant character, it can find no |)lace under any of till' subdivisions proposed there, as, with crlhratttm and serpentinum it appears to possess very few cliaracters in common, except the one indicated.
The type specimen was taken on the sandy shores of the Delaware River about six miles from Philadelphia.
C. parallc'llllll u. sp. — Form slender, depressed ; sides parallel. Color throughout i)ale reddish-brown, iu)t paler beneath ; femora much paler, llavate ; antennae testaceous, basal joint slightly more flavate and the tip more fulvous and paler from an excessively fine short and dense pubescence; head and prothorax less opaque and more purely rufous than the remaiiuier ; sparsely and coarsely pubescent, elytra and abdomen more densely and conspicuouslyso.Headtwo-thirdslongerthanwide;sidesparallelbehindthe eyes and almost straight posteriorly, broadly rounded to the neck whicli is three-fifths as wide as the head ; eyes rather small, very slightly convex ; epistomal regions before them two-thirds as wide as the head, sides parallel and straight, truncate anteriorly, angles rounded ; antennal tuberculations broad and ver^' prominent ; surface between them feebly declivous and slightly more strongly impressed near them, slightly more sparsely and finely i)unctate ; interocular surface and occiput rather coarsely strongly
COLEOPTERA. 131 evenly and sparsely punctate ; punctures circular, sub-variolate, strong, generally separated by about three times their widths in the middle, sliglitly closer toward the sides where the surface becomes slightly rugulose : immediatelybehind the eye in a line parallel with its rather truncate and oblique hind margin, and at a distance from it more than equal to its length, there are two large round crater-like setigerous punctures, very distinct from the mass of punctures about them ; under surface rugulose, shining, sparsely and finely punctate ; maxillary palpi long, all the joints slightly flattened, second scarcely as long as the third, arcuate, gradually widening toward tip which is obliquely truncate, third conical, gradually narrowed toward base, truncate at tip, three times as long as wide, fourth very small, flattened, conical, oblique, two-thirds as wide at base as the tip of the third and nearly as wide as long, not one-fourth as long as the third joint ; inner tooth of mandibles very long, arcuate, strong ; antennae much longer than the head, slender, basal joint much the most robust, as long as the next three together, second two-thirds as long as the third, as long as the fourth, joints four to eight increasing slightly in length, eight to ten decreasing rapidly in length, eleventh very slightly longer than the tenth. Prothorax two-thirds as long and nearly five-sixths as wide as the head ; sides feebly convergent from apex to base and feebly arcuate ; apex broadly and very feebly emarginate ; angles slightly acute and very slightly rounded ; base transverse, angles broadly rounded ; disk polished, one-sixth longer than wide, rather coarsely closely and irregularly punctate, more irregularly and sparsely so laterally; median impunctate area even. Elytra very long, one-third longer than the pronotum, about as wide as the head ; sides nearly parallel, very feebly arcuate near the middle ; together broadly roundly and rather strongly sinuate behind ; angles broadly rounded ; disk nearly one-third longer than wide, depressed, extremely highly polished, coarsely evenly and densely punctate, interspaces one and one-half times as wide as the punctures, convex. Abdomen very slightly narrower than the elytra ; sides parallel and straight ; border very strong, deejj, strongly inclined, equal throughout the first four segments ; surface finely rather sparsely and evenly punctate, also coarsely and distinctly strigato-reticulate, shining ; under surface like the upper, bristling with long erect black setae toward the tip. Legs long and slender ; first joint of the posterior tarsi one-third longer than the second, slightly shorter than the last ; femora much paler than the tibiae and tarsi. Gular support of the mentum and scutellum each having two small setigerous punctures in the middle of the disk and transversely disposed. Female. — Second ventral segment having just behind the middle a short transverse and feeble fold, one-sixth as long as the width of the segment, straight and densely fimbriate with slender black setae ; third segment having just before the middle a short transverse and very feeble fold similar to the first, except that it is not one-half as long ; sixth segment very broadly roundedbehind.
Length 9.5 mm.
Pennsylvania, near Philadelphia, 1.
The two areolate punctures behind the eyes appear to characterize the genus or a large portion of it. I do not see any group made by
132 NORTH AMERICAN Dr. LeConte in his table which can i-eceive this species, on account of the structure of the fourth joint of the niaxilhiry palpi; it can, however, for the present be placed after higuhre.
C proxiltmm n. sp. — Form moderately slender, depressed. Color throughout lathor dark brownisli-red ; head very slightly darker, castaneous ; femora paler, yellowish-testaceous ; pubescence of head and pronotum very coarse, setiform, sparse, erect, that of elytra and abdomen slightly more dense, finer, erect, fulvous. Head much longer than wide ; sides behind the eyes parallel and very slightly arcuate, broadly rounded behind ; base broadly and very feebly emarginate ; eyes small, truncate behind, slightly prominent ; width across the eyes scarcely as great as at their own length behind them ; epistomal region adjoining them anteriorly about two-thirds as wide as the head, sides parallel and straight, broadly truncate and very feebly sinuate anteriorly, angles rounded ; antennal tuberculations strongly marked, intermediate surface feebly declivous, slightly more strongly impressednearthemandslightlymoresparselypunctatethantheocciput;the latter broadly convex, polished, coarsely deeply evenly sparsely and subvariolately punctate, punctures round, separated in the middle by about two and one-half times their own widths, at the sides smaller and slightly closer; large punctures at one and one-half times the length of the eye l)ehind the latter, the upper one the larger and elongated ; under surface finely and sparsely punctate, polished, finely rugulose ; maxillary palpi long, second joint very feebly arcuate, distinctly shorter than the third which is conical, rather abruptly narrowed near the base, about two and one-half times as long as wide, fourth flattened, olilique, conical, very slightly longer than wide at base, two-thirds as wide as the third and one-fourth as long, color pale ; mandibles nearly black ; antennae much longer than the head, slender, pubescence toward tip rather coarse, very close and dense, bright fulvous, basal joint as long as the next three together, second nearly threefourths as long as the third, equal to the fourth, joints four to eight increasing very slightly in length, the latter conical, twice as long as wide, ninth longer than th<» tenth, equal to the last, the latter very slightly longer than wide. Prothorax much shorter and \n\i slightly narrower than the head ; sides about parallel, rather strongly arcuate ; apex slightly longer than the base, broadly and very feebly arcuate, angles obtuse, narrowly rounded, base transverse in the middle, angU's rather broadly rounded ; disk extremely highly polished, scarcely one-sixth longer than wide, l)roadly convex, coarsely and rather densely punctate, i)unctures roundly impressed, without trace of serial arrangement; broad mt>dian area, and on each side a narrower oblique line beginning near the apical angles and continuing to the base, iiii]>uuctate ; two setigerous punctures of scutelluni very widely separated. Elytra at base as wide as the head ; sides parallel and very feebly arcuate ; together broadly and rather strongly sinuate behind; apical angles rounded; disk nearly one-third longer than the pronotum, depressed, flat, rather coarsely evenly and very closely punctate, very highly polished. Abdomen about as wide as the elytra; sides parallel and straight; border very strong on the llrst four segments, slightly stronger toward base ; surface polished.