COLEOPTERA. 69 TACHYS Steph.
T. OCCllltator n. sp. — Form rather robust, depressed. Color above reddish-testaceous, head nearly black ; beneath reddish-testaceous, except the abdomen, which is blackish-fuscous ; legs and elytral epipleurae pale fulvo-testaceous ; antennae dark brown, except the two basal joints which are slight]}^ paler : integuments highly polished, impunctate, and translucent.Head moderate, longer than wide; eyes moderate, somewhat prominent, in great part visible from above, coarsely granulated ; interocular surface very feebly convex, finely and distinctly reticulated ; front of epistoma one-half as long as the distance between the eyes, transversely truncate anteriorly, sides thence moderately divergent, narrowly elevated, and nearly straight to the anterior limits of the eyes, punctures very small, distant from the anterior angles which are very obtuse, and scarcely rounded ; from the epistomal punctures extends on each side a very broadly and irregularly impressed channel more than one-third the total length of the head, the two being parallel ; the ocular borders are elevated, the elevation becoming narrower and more acutely rounded posteriorly, taking the form of supraocularridges ; epistomal suture almost completely obsolete; labrum large, one-half wider than long, transversely truncate anteriorly, angles rounded, sides parallel ; antennae about as long as the head and prothorax together, slender, basal joint somewhat robust, larger than the second, second equal in length to and scarcely more robust than the third. Prothorax widest at about one-third its length from the apex, where it is but very slightly wider than the head, and one-half wider than long ; sides rather strongly arcuate, feebly sinuate toward the basal angles, which are right, and not at all rounded, very prominent ; base transverse at the sides, broadly arcuate in the middle ; apex just visibly longer than the base, broadly and rather feebly emarginate ; apical angles very obtuse, very slightly rounded ; anterior setae just within the border at one-third the length from the apex, posterior on the acute edge slightly before the basal angles ; disk broadly and almost evenly convex throughout ; median groove extremely fine and feeble ; at the base there is a broadly arcuate and unbroken line of minute foveae opposite the arcuate portion of the basal edge ; minute tuberculations within the basal angles entirely wanting. Scutellum hastate, small, slightly longer than wide. Elytra at base distinctly wider than the pronotum ; sides parallel and very feebly arcuate for three-fourths the length from the base, where there is a large marginal seta ; disk obtusely rounded behind, broadly and rather feebly convex, widest at the middle, where it is about threVfourths longer than wide ; sutural striae strongly marked, arcuate without, then a second very feeble stria, and beyond very feeble traces of a third on each elytron; in the middle and two-fifths the width from the suture a minute setigerous puncture, and another discal puncture in the same line at onesixth the length from the apices ; sides feebly and narrowly reflexed with a short setigerous humeral channel very close to the edge, and, through the posterior two-fifths, a more deeply impressed and irregular channel near the border, and a very short oblique discal one, both coalescing near the elytral plica with the marginal continuation of the sutural stria. Legs long and
70 NORTH AMP^KICAN slendf r, sparsely pubescent. Abdomen rather strongly convex, very sparsely clothed witli short erect pubescence toward tip; last segment having four equal equidistant marginal setae. Length 2.8 mm.
Cape May, New Jersey, 1.
FouikI under duhri? on tlie beach ; it ?onie\vliat resembles scitnlus in foini of body, and more particularly in the two small f'oraniiniform ])unctiires behind and ratlier distant from the mentuni tootli ; the dental setae of the mentum are close to tiie base of the tooth and are rather ap[»roximate.
The impressed setigerous channel begun at the humeri and again resumed toward the apices, is a generic character, but the short oblique apical stria seems to vary somewhat in obliquity; in the present species it is very widely divergent, while in gemellus it is very close to the marginal channel. The curious punctures behind the mentum tooth appear to be a characteristic of the broadly depressed species allied to scltulus, there being no trace of them in those species similar in form to incnri-iis or gemellus ; I have, therefore, restored Ciiaudoir's genus for the latter.
BARYTACIIYS Chaud.
B. glosseilia n. sp. — Form robust, short, convex ; sides strongly arcuate. Color above dark rufo-testaceous ; head slightly darker beneath, rufo-testaceous ; abdomen piceous-black ; legs pale fulvous, antennae same toward base, brownish toward tip; integuments very translucent and very highly jiolished. Head short and robust, scarcely as long as wide ; eyes moderate, rather prominent, very coarsely granulate ; iiiterocular surface feebly convex, liaving an irregularly impressed very short channel on each side over the eye, and attaining the epistomal suture ; anterior margin of epistoma one-third as long as the distance between the eyes, broadly and feebly sinuate throughout, angles extremely well marked and prominent, sides thence widely divergcuit, deeply and evenly sinuate to the anterior limits of tiie eyes ; epistoma but slightly wider than long, suture distinct, setae at two-lifths its length from the anterior angles ; labrum very short, more than four times as wide as long, finely rugulose anteriorly, broadly and feebly sinuate throughout ; antennae distinctly longer than the head and prothorax together, basal joint ratlier robust, first three joints sub-equal in length, decreasing almost uniformly in thickness. Prothorax widest at nearly twofifths its lengtli from the apex, where it is much wider than the head, and one-third wider than long: sides strongly arcuate, very feeV)ly convergent posteriorly, where they become feebly sinuate for a very sliort distance in front of the basal angles, the latter prominent and not at all rounded ; base and apex about equal in length, both transverse and straight ; disk rather feebly convex, except towar<l the apical angles where it is very strongly so, having at each side, at two-fifths the length from the apex, a small erect
COLEOPTERA. 71 sL'ta ; lateral borders very narrowly reflexed ; modian groove very fine and feeble; near tlie base there is a broadly arcuate row of minute punctiform loveae, nearly in mutual contact ; there is also a minute tuberculation just inside of each basal angle. Scutellum small, angulate behind, very slightly wider than long, sides rounded, slightly constricted at base. Elytra at base just visibly wider than the pronotum ; sides parallel and rather strongly arcuate for two-thirds the length from the humeri, thence rather strongly convergent ; disk rather acutely rounded behind, widest at one-third the length from the base, where it is scarcely two-fifths longer than wide ; humeral angles broadly rounded ; strongly convex, impunctate ; sutural striae distinct, fine, single, slightly arcuate, with excessively feeble traces of a second stria ; there are also on each elytron two punctiform impressions at the base, and two extremely minute and feeble punctures or eroded setigerous impressions at one-third the width from the suture, and just before and behind the middle ; lateral edges narrowly rellexed ; on the extreme Hanks near the humeri there is on each side a short irregular impressed channel, with two or three setigerous punctures near its point of origin ; epipleurae wide at the base, becoming rather abruptly much narrower at one-third the length from the humeri, pale in color. Abdomen nearly flat, edges of the segments abruptly and very narrowly paler. Legs long and slender. Length 2.0 mm.
Pennsylvania, near Pliihulelphia, 2.
A very robust little species, resembling incurvus, but much shorter in proportion to its width ; tlie greatest difference is perhaps in tlie head, which is much shorter and broader and with much more coarsely granulated eyes in glossema; tlie distance between the front coxaj is also relatively greater in the latter.
B. gemellus n. sp. — Form very slender, convex ; sides arcuate. Above very uniformly dark rufous throughout, antennae testaceous toward base, fuscous toward tip ; under surface throughout of same color as the upper, except along the lateral margins of the abdomen, where it becomes castaneous ; integuments polished, rather opaque ; legs flavate, translucent. Head rather small, as long as wide ; eyes moderate, somewhat prominent, coarsely graniilated ; impressions above the eye near the suture very feeble ; epistomal apex slightly longer than one-third the distance between the eyes, very feebly sinuate, angles obtuse and slightly rounded, sides thence widely divergent and feebly sinuate to the anterior limits of the eyes ; labrum large, about twice as wide as long, minutely and strongly reticulated throughout, apex broadly sinuate ; epistoma about one-half wider than long, setae at about one-third its length from the anterior angles ; antennae short, scarcely as long as the head and prothorax together, basal joint robust, second slightly shorter than the third. Prothorax widest at two-fifths the length from the apex, where it is much wider than the head, and one-half wider than long ; sides broadly and moderately arcuate to within a very short distance of the basal angles, where they become very feebly sinuate ; basal
72 NOKTll AMERICAN angles obtuse, prominent, and not at all rounded, setigerous ; anterior angles rather broadly rounded ; base and apex about equal in length, transverse and nearly straight ; disk convex, more strongly so toward the anterior angles ; lateral setae at two-fifths the length from the apical angles ; border narrowly retlexed , median groove very fine and feeble, extending from the base nearly to tlie apex ; very near the base there is a broadly arcuate impressedgroove entirely interrupted in the middle, but coarsely and feebly punctate toward the sides, tuberculatlon near each basal angle extremely feeble. Scutellum very small, distinctly wider than long, angulate behind, sides rounded, slightly constricted at base. Elytra at base scarcely wider than the pronotum ; sides parallel and moderately arcuate for nearly twothirds the length, thence convergent ; disk rather acutely rounded behind, widest at about one-third the length from the base, where it is two-thirds longer than wide, strongly convex ; sutural striae fine, strong, feebly arcuate, with distinct traces of a second stria; each elytron has on the disk two minute setigerous punctures as in g/ossema, and, at the base, a circular setigerous verrucation near the scutellum ; edges narrowly reflexed ; humeri broadly rounded, near wliich there is a short irregularly impressed channel having four small setigerous punctures nearly equidistant and scattered along its entire length ; there is also a large setigerous puncture posteriorly at the edge ; epipleurae wide at the basal third, where the inferior edge is feebly sinuate. Abdomen feebly convex ; terminal segment with two apical pairs of setae. Legs long and slender ; posterior trochanter with one discal seta; posterior femora with three equidistant erect setae. Length 2.4 mm. Cape May, New Jersey, ^.
Taken under rubbish on the sea-beaeh ; it resembles at first sight incinriis, but differs greatly in tlie color, want of elytral maculations, niueli more slender form of body, opatiue integuments, and many minor eliaracters, among wliicli may be mentioned the transversely arcuate furrow at the base of the pronotum, which is densely and evenly foveate throughout its length in inciirvus.
PTEROSTICHUS Bonelli.
P. lllclllllAttailis n. sj). — Form nearly as in tc.raiuts. Upper surface metallic, higlily jxilished, rellecting a brilliant reddish tint from tlie middle portions, and a brilliant nu-tallic green from the refiexed portions at the sides ; under surface polished, intense black without colored reUections ; legs and palpi same ; antennae piceous, becoming dark reddish-fuscous toward base. Head rather small, longer than wide ; eyes very large, prominent ; interocular surface moderately convex, very feebly rugnlose toward the eyes, extremely minutely and irregularly punctate more especially toward tlie eyes, polished, with brilliant and varied metallic red and green reflections ; labrum and maiidihles black, the former four-fifths wider than long, almost transversely truncate anteriorly, the latter very robust, rugnlose or furrowed on the inner surface ; antennae slightly longer than the heal and prothorax
COLEOPTEUA, 73 together, slender, three basal joints carinate posteriorly and glahrous, carina of the first becoming obsolete at two-thirds its length from the base, basal joint sub-cylindrical, twice as long as wide, bearing near the tip a seta as long as the first two joints together, second joint one-third as long as the third ; palpi truncate at tip, flattened, truncation in the form of a narrow rectangle, the surface of which is deeply excavated; labial very slender cylindrical, second joint more than one-third longer than the third, bearinotwo long setae ; maxillary palpi rather long and stout, entirely glabrous second joint very finely strigose, third slightly longer than the fourth ; mentura tootli vei'y broad, squarely truncate or very feebly sinuate at tip ; ligula rounded at tip, broadly swollen along the middle, bearing along the apical edge, which is retlexed, two setae. Prothorax widest at the middle, where it is scarcely' one-third wider than long; sides very strongly and nearly evenly arcuate throughout ; apex slightly shorter than the base ; basal angles obtuse, narrowly rounded, ajjical slightly acute, narrowly rounded ; base transverse, apex broadly emarginate ; disk rather feebly convex, transversely creased ; median line strong, very feeble just behind .the centre of the disk ; basal impressions rather finely and irregularly punctate, the inner ones more than twice as long as the outer, and, with the median line, dividing the disk nearly equally ; margin feebly reflexed, becomingmuchmorebroadlyandfeeblysoposteriorly;posteriorangleshavinoan erect seta, anterior setae well within the edge. Elytra at base slightly narrower than the pronotum ; sides parallel and rather strongly arcuate for three-fourths the length from the base ; disk rather acutely rounded behind, moderately convex ; striae very deeply impressed, very feebly and distantly punctulate ; intervals strongly convex, very finely and irregularly creased and finely alutaceous, third interval having six distinct punctures near the third stria ; basal carina strong, attained by all the striae except tiie scutellar ; three-fourths longer than the head and pronotum together. Legs long and slender ; first four joints of the posterior tarsi strongly grooved ; abdomen punctate toward the base, strongly convex, last segment not modified. Metasternum and its episterna coarsely, deeply, and coalescently punctate, the latter longer than wide. Length 13.0 mm. ; width 5.0 mm. Willets Point, New York Harbor. 1 %.
This very fine species may be [)lace(l at present immediately after lucublandus in Dr. LeConte's table of Pterostichus ; it may be distinguishedatoncefromthatspeciesbymanycharacters,chiefamongst which may be mentioned the verj' strongly tn-cuate sides of the prothorax, very black legs and tarsi, and the six dorsal punctures. CRATACAIVTHUS Dejean.
On carefully looking over my specimens of this genus, which are generally included under the name dubius, it appears to me evident that there are several distinct species which may be separated by the following table : —
74 NORTH AMKUICAN Epiplcuiae of elytra rufous or rufo-castaneous ; eyes very strongly convex ; legspale, lilytra fully twice as long as the pronotum.
Labruui short ; head much narrower than the prothorax, the latter about as wide as the elytra ; posterior margin of pronotum but very slightly wider in tlie middle than near the basal angles... 1. dllbilis. Labrum long ; prothorax scarcely perceptibly wider than the head, and distinctly narrower than the elytra, posterior margin nearly twice as wide in the middle as at the posterior angles 2. litoreiis. Elytra scarcely twice as long as the prothorax, and equal to it in width ; labrum very long ; basal margin of pronotum much wider in the middle 3. liisectus.
Epipleurae of elytra black ; eyes much less convex ; legs dark piccDUS. 4. f^xaiius.
1. C dllbillS (Beauv.) — Ins. Afr. et Am. p. 8, t. IT), f. 7; Peniisi/Iraniciis Dej. — First joint of antenna three-fourths longer than wide, .sub-cylindrical, rather abruptly narrowed at base, second two-thirds as long as the third, and just visibly .shorter than the fourth, fourth slightly shorter than the fifth, joints five and six equal in length, one-fourth longer than wide, outer joints from the fourth very strongly compressed. Middle femora having on its lower face a row of five erect setae, beginning at the base, nearly parallel to the axis and above it, also another row of about seven setae from the middle of the base obliquely to tlie lower edge beyond the middle, also a short straight row of four short stitf setae near the tip and from the upper edge obliquely and inwardly to the median line where it ends; in addition two long erect setae in the basal third of the lower edge, and a row of equidistant very short inclined setae along the entire upper edge; corresponding tibiae scarcely as long as the femora ; posterior tibia slightly longer than the femur, first joint of the tarsus very slightly longer than the second, last joint distinctly shorter than the first two together, equal in length to the second and third together. Length 9.8 mm.
New Jersey ; District of Colun)bia.
2. C. litoreilS n. sp. — Antennae much shorter, liasal joint twice as long as wide, gradually narrowed toward base, second two-thirds as long as the third, about three-fourths as long as the fourth, fourth slightly longer than the filth, joints five to eight eijual in length, the former one-fifth longer than wide. Middle fi-mora having three long erect setae along the lower edge exteriorly, and three along the same edge interiorly ; median oblique row of about five erect setae on the lower face reaching the lower edge at two-thirds tlie length from the base, also an upper marginal row of about three or four setae; posterior tibiae slightly longer than the femora, first joint of the tarsus as in <lnl>iiis. Length 8.0 mm.
Atluiilic •'ity, New Jersey.
The smallest species of the geinis thus far described ; it is very distinct in facies, the very narrow jirothorax and relatively broad atid deflexed head giving it a very peculiar appearance.
COI-EOPTERA. 75 3. C 'bisectUS n. sp. — FiiHt joint of antennae twice as long as wide, very slightly narrowed toward base, second scarcely more than three-lifths as long as tlie third, and scarcely three-fourths as long as the fourth, fourth distinctly shorter than the fifth, joints five to seven almost exactly ecjual, fully one-third longer than wide ; lower surface and edges of middle femora with setae nearly as in ilubius, except that the -upper discal line is very much further from the axis, and very near the upper edge ; first joint of the posterior tarsus much longer than the second, as long as the third and fourth together, fifth slightly longer than the second and third together. Length 9.0mm.
Fairinount Park, Philadelpliia.
Distinguished by the short and narrow elytra, the base of the pronotuni almost dividing tlie body into two equal portions. 4. C. texailUS n. sp. — First joint of antennae twice as long as wide, sub-cylindrical, very feebly narrowed toward base, second longer than in liiseclus, nearly one-half longer than wide, two-thirds as long as the third, three-fourths as long as the fourth, fourth as long as the fifth, which is nearly one-half longer than wide. Antennae much darker than in the preceding species. Middle femora nearly as in the preceding species ; tibiae and tarsi black throughout; posterior tibiae much longer than the femora; first joint of the tarsus much longer than the second, as long as the third and fourth together, fifth about as long as the first two together. Length 10.8 mm. Texas.
This species is abundantly distinguished from the otiiers by the characters given. The head is relatively longer and narrower. The iront is more strongly declivous than in any except Utoreus. DISCOD£RUS Lee.
I>. pinguis n. sp. — Form robust, moderately convex ; sides parallel. Color piceous- black, legs and under surface concolorous and slightly paler; when immature piceous-brown throughout, legs paler ; integuments very minutely reticulate, moderately shining. Head robust, wider than long; surface moderately convex ; supra-orbital seta opposite the posterior limit of the eye ; epistomal suture transverse and distinct, anterior edge broadly and feebly emarginate ; labrum large, sides near the base very feebly divergent anteriorly, then strongly convergent to the apical angles, which are rounded, anterior edge strongly sinuate, disk i:)aler in color; emargination of mentum more tlian twice as wide as deep, very broadly rounded at the bottom, sides feebly arcuate, not toothed ; seco;jd joint of labial palpi much longer than the third ; sub-mentum bearing upon the disk at each extremity a close pair of setae ; antennae rather slender, fuscous, paler at base, second joint scarcely one-half as long as the third, third distinctly loiiger than the fourth, joints four to eight decreasing distinctly in length. Prothorax widest very slightly before the middle, where it is four-fifths wider than the head and two-fifths wider than long ; sides strongly and almost evenly arcuate throughout ;
76 NORTH AMERICAN basal angle'; broadly rounded ; base distinctly broader than the apex, nearly transverse, broadly sinuate between the basal angles ; apex rather strongly euiarginate throughout, angles very narrowly rounded ; disk rather strongly convex, broadly depressed toward the base and basal angles; median line rather feebly impressed ; lateral border narrow, rellexed, edges thick ; apical border narrow, becoming nearly obsolete in the middle, basal continuous with that of the sides, only interrupted in a very short space in the middle ; surface impiinctate, except a few excessively feeble punctures along the lateral edges toward the base, and a very few near the basal angles. Elytra scarcely visibly wider than the pronotum ; sides parallel and feebly arcuate for threefourths the length, then obtusely rounded behind, more acutely so at the immediate apex ; disk convex ; striae strongly impressed ; intervals very feebly convex, having numerous, large, very feeble, rounded impressions, second, fifth, and seventh striae punctate, punctures small, rather distinct. Legs rather slender ; middle tibiae strongly bent ; anterior tarsi distinctly dilated, very coarsely dentate over the lower surface ; first joint of the posteriortarsi slightly shorter than the next three together ; anterior coxae widely separated, process nearly fiat, circularly rounded, large; middle coxae distinctlysei)arated.Metasternalepisternafullythree-fourthslongerthanwide. Length 8.r)-10.5 mm.
Arizona, G.
Described from t!ie male ; it appears to be common in Arizona, and varies much in color, probably from immaturity. This species is described as new after reading Di"- Horn's description of robnstns, under which name I had recorded these specimens. In the description of rohiistiis, the prothorax is said to be distinctly narrower at base than at apex, and the metasternal episterna arc said to be scarcely lonjxer than wide; these measurements are so distinctly and positively reversed in the present species that the two are necessarily distinct, if all the cliaracters are correctly stated.
SELEXOPIIOKUS Dej.
S. perpolitllS n. sp. — Form somewhat robust and depressed. Color above black, beneath piceous-black, abdomen wry slightly paler. Head moderate in size, slightly longer than wide; eyes large, sligiitly ]>romincnt, in most part visible from above, inner margin strongly sinuate; interocular surface feebly convex, scarcely four times as wide as the eye, polished, excessively feebly rugulose, covered sparsely behind with very fine feeble eroded impressions ; supra-ocular setae rather distant from the eye; labrum very large, nearly one-half wider than long, feebly and narrowly sinuate anteriorly, anterior angles very broadly rounded, sides thence rather strongly divergent to within a short distance of the base, where they become distinctly convergent ; epistomal setae slightly distant from the anterior angles ; maxillary palpi slender, third joint three-fourths as long as the fourth; second joint of the labial i)alpi distinctly shorter than the third, which is a segment