COLEOPTERA. 181 the posterior tarsi when compared with the first two combined is miicii longer and more slender than in hiuotuta. In addition we have many minor differences, for example the color and elytral maculations wliich are very different, and also the sparser pubescence of the under surface in hinotata, and tlie more convex occiput in lateipennis. STRIGODERMA Burra.
S. piinalis n. sp. — Rather dopressecl ; sides nearly parallel. Color very variable, median portions of the sterna usually darker, black to pale testaceous-brown, always strongly opalescent with metallic green or red which is more evident in the dark specimens ; elytra glabrous, pronotum clothed sparsely with long fine pubescence ; under surface sparsely and more coarsely pubescent, more coarsely and very sparsely so on the abdomen ; integuments polished. Head very slightly longer than wide ; interocular surface moderately convex, very coarsely deeply and closely sculptured, with very short impressed and vermiculate channels except along the base of the occiput where the punctures are isolated ; first two joints of the antennae fuscous,the remainder dark piceous, club shorter than the remainder ; last joint of the maxillary palpi much longer than the three preceding together, robust, sub-cylindrical, obtusely acuminate at tip \ sides of the mentum narrowly and deeply emarginate. Prothorax slightly wider than long ; sides almost evenly arcuate, slightly more strongly so anteriorly ; basal angles broadly rounded, apical acute and scarcely rounded ; apex about two-thirds as long as the base, the former broadly emarginate, the latter strongly arcuate in the middle, very feebly sinuate toward the basal angles; disk moderately convex, narrowly margined throughout its circumference, sparsely and rather coarsely punctate, the punctures becoming larger and more coalescent toward the sides; having at each side near the apical angles an oblique canaliculate impression, and, just before the middle, a rounded punctiform impression j just behind which there is another broadly impressed oblique impression parallel to the one at the anterior angles, the two posterior often coalescent ; median canaliculation broadly impressed nearer the apex than the base, not attaining either. Scutellum very slightly wider than long, sparsely and finely punctate. Elytra nearly one-half wider than the pronotum ; sides parallel and very slightly arcuate ; humeral protuberances prominent, elongated posteriorly; each elytron evenly rounded behind ; disk depressed, deeply striate ; striae coarsely foveolate, ])unctures very shallow and in close contact ; intervals very slightly wider than the striae, in the form of very convex ridges ; disk two-fifths longer than wide and four-fifths longer than the head and pronotum together. Pygidium strongly rugulose ; ridges transverse. Larger claw of anterior and middle tarsi cleft at tip. Length 11.0 mm.
Arizona, 5.
This species, until now confounded with arboricola, I find to differ in many characters irrespective of color and siiape. In pimalis tlie two teeth formed by the cleft at the tip of the middle tarsal claws are
182 NORTH AMERICAN equal in length, while in arboricola they are very unequal in length and much more unecjual in thickness. Perhaps the most decisive point of difference is in the sexual characters ; the first and sometimes also the second ventral segments in the males of arboricola are ornamented with a transverse series of broad deeply impressed longitudinal canaliculations, while in the males of piiua/is tiiere is no trace of tiiis formation, but a mere trace of two very narrow exceedingly feeble distant and partial longitudinal impressions. Tiiere is also a decidetl difference in the nature of the abdominal pubescence, this being much more abundant and finer in arboricola. In color and form the two species differ very greatly, piinalis being relatively longer and narrower, with the sides mucli less arcuate. They also differ greatly in tlie sculpture of the scutellum.
»ISO-\YCHA Cliev.
D. pi'OCera n. sp. — Form elongate narrow ; sides parallel. Color of liead lilack, with a dilfused band of fuscous between the antennae, pronotum pale reddish, with narrow paler liavate margins, elytra having a broad sutiiral vitta, a very broad discal one which does not attain tlie apex, and a broad lateral vitta not attaining the reflexed side margins and not attaining the apical angles, all of black, remaining portions bright yellowish-white, and so narrow as to give the appearance of black elytra with narrow silvery vittae ; under surface black, except the prosternum and its side pieces which are pale flavo-testaceous, and the last ventral segment which is fuscous, the remaining segments also have at each side a small diffused patch of dark fuscous ; femora dark rufous, tibiae and tarsi black, antennae intense black throughout; upper surface glabrous, polished, under surface covered somewliat densely with very short fine and inconspicuous pubescence ; elytral epipleurae black, outer edge pale Havate. Head slightly wider than long, median portions impunctate ; occiput having a very small median imjjression, between which and each eye, there is a large irregular impression containing three or four large punctures, also in the mid'lle of the front between the middle points of the eyes, a small deep impression with four short radiating canaliculations, and between this and each eye a few small scattered punctures ; labrum much wider than long, strongly sinuate anteriorly; antennae one-half as long as tlie body, covered densely with very fine short pale pubescence, second joint huiger than wide, oval, one-half as long as the tiiird, the latter three-fourths as long as the fourth. Prothorax distinctly more than twice as wide as long ; sides feebly convergent anteriorly, feebly arcuate ; anterior angles slightly thickened, rounded ; apex transverse, feebly indented near each apical angle ; base broadly arcuate, broadly and feebly trisiuuate, basal angles narrowly rounded, each bearing an erect seta; disk broadly convex, almost imi)unctate, very minutely and feelily reticulate, transparent, not maculate except a vague longitudinal median spot. Elytra at base as wide as the pronotum, widest at two-thirds
• COLEOPTERA. 183 the length from the base where they are but very slightly wider ; sides nearly straight ; apical angles obtuse and slightly rounded ; disk abruptly and obtusely rounded behind, rather broadly convex nearly twice as long as wide, and more than five times as long as the pronotum, feebly and sparsely punctnlate and very minutely sub-granulate, polished ; each elytron has in the median black vitta, beginning at one-fifth the length from the base and terminating at one-fourth the length from the apex, two long narrow ridges with an intervening canaliculation ; lateral margins narrowly reflexed. Legs , robust ; posterior femora very robust, strongly compressed ; tibiae finely and densely pubescent ; first joint of the posterior tarsi but slightly shorter than the remainder couibined. Abdominal segments very finely and densely ruguloso-jjunctulate. Prosternal intercoxal process slightly dilated and depressed at tip, pubescent. Length 6.8 mm, ; width 3.0 mm. Milt'ord, Delaware, 1.
The coarse granulation of the under surface of the elytra sinning through the transparent substance of the latter, gives to the narrow pale vittae a most beautiful appearance when examined with sufficient power ; these vittae are of a pure silvery white when the insect is living, but subsequently turn to a yellowish color. The species is one of the most distinct, and, according to Mr. Crotch's table of this genus, should apparently follow alternata in the catalogue. BRUCHUS Linn.
B. cnl>iculus n. sp. — Form slightly elongate. Head and entire under surface black ; pronotum black except a large spot near the basal angles and a smaller one near the apical angles which are obscure rufous ; elytra mottled with black and rufous, the most prominent black spots being a small humeral, a broad medial one not attaining the suture, and a nuich larger and irrregular apical spot ; pubesc<^nce very sparse, cinei-eous. Head strongly deflexed, much longer than wide, abruptly constricted behind tlie eyes into a rather long neck, entire surface* finely and strongly rugulosopunctulate ; interocular surface abruptly slightly below the surface of the eyes, much narrower than the latter, having a broadly obtuse but very distinct longitudinal carina ; eyes coarsely granulated, large, lenses very convex ; antennae shorter than the head and prothorax together, first four joints fuscous and slender, remainder strongly compressed, black, with the joints strongly serrate externally, becoming much more strongly so toward tip and also wider, very compact, terminal joint resting obliquely along the tooth of the preceding joint, pubescence very fine and short, cinereous, second joint oval, slightly longer than wide, much shorter and more robust than the third, third slightly longer and less robust than the fourth. Prothorax widest at base where it is about one-half wider than long ; sides strongly convergent anteriorly and very feebly arcuate ; apex less than one-half as wide as the base, broadly and very feebly arcuate ; base strongly arcuate, feebly sinuate at each side of the middle with the intermediate edge at the middle very broadly arcuate, almost truncate, also more strongly
184 NORTH AMERICAN sinuate near each basal angle, the two lateral sinuations being separated by a very broad and feeble tooth ; disk strongly convex, not elevated along the middle, strongly ruguloso-punctulate, having at the base a short and strong medial canalicnlatiou, also feebly impressed at the base on each side of the middle. Scutellum wider than long, transversely sub-oval, not densely pubescent. Elytra at base very slightly wider than the pronotum ; sides parallel and very feebly arcuate ; each elytron broadly rounded behind ; disk distinctly longer than wide, not impressed along tlie suture, moderately convex ; striae strong and impressed, scarcely punctate ; intervals nearly tlat, strongly ruguloso-reticulate, shining ; humeri very prominent. Pygidiiim very large, much longer than wide, triangular, sides all broadly arcuate, disk strongly and coarsely ruguloso-punctulate, black, rufous along the base, sparsely pubescent, more densely so at the base near the elytra, apex narrowly rounded. Ventral segments abruptly and broadly rufous at tlie sides near the elytra, the rufous color extending on the last segment tb roughout its extent, remainder black. Femora not dentate ; posterior tibiae having two large strong and unequal terminal teeth and also several very minute ones ; first joint of the posterior tarsi cylindrical distinctly arcuate more than three-fourths longer tlian tlie remainder, second much longer than the tliiid. Length 1.5 mm.
Arizona (Morrison), 1.
Much smaller than inipiger Horn, after wliicii it should be placed in the catalogue; the shape of the pronotum is very different in the two species.
In tliis connection it should be stated that there are two species of Bruchus which may be easily confounded, viz., hibisci Oliv. and alboscittellatus Horn. I have identified a series in my cabinet as the last-iuimed species, although they were taken in Pennsylvania and Delaware and vary in size from 1.7 to 2.2 mm. Dr. Horn gives the locality as Georgia, Louisiana and Missouri, and, as he states the length to be 2.;} mm., the species is seen to have a great range of variation in length as well as an extended distribution. Tlie scutellum is smaller than that of hibisci and the form of body more slender; the posterior femora has a large tooth and between it and the tip two minute dentacles almost e(piidistant from each other and the large tooth, and also near the latter and toward the base of the femur a second smaller and much shorter tooth.
EPITK.KiUS Latr.
E. ovalis n. sp. — Form moderately robust, oval, rather strongly convex ; liead and pronotum black, elytra dark rufous, under surface dark pioeousbrown, legs and antennae not paler ; pubescence of upper surface very short and ratber dense, briglit fulvous, less conspicuous on the elytra; integumentssub-opaque. Head as long as wide ; sides from the posterior limits of
COLEOPTERA. 185 tlie eyes straight and rapidly convergent anteriorly ; supra-antennal ridges Hat above, transverse anteriorly and disappearing in the general surface of the clypeus which is declivous anteriorly, produced, and vt;ry strongly rounded at the apex, almost angulate ; eyes flat, rather large, having just within each on the front a very fine carina ; interoeular surface feebly convex, broadly impressed on each side witliin the antennal ridges, very deeply densely, and slightly unevenly punctate, punctures round, rather more sparse along the middle, and much smaller on the epistoma ; labrum transverse,feeblysinuateanteriorly;antennaeslightlyshorterthanthepronotum, outer joints strongly compressed, second joint nearly two-thirds as long as the third, three to five decreasing in length, seven to ten slightly produced outwardly at apex. Proihorax widest at the base where it is about two-fifths wider than long ; sides very feebly arcuate, straight in the posterior half; apex broadly eraarginate, about three-fourths as long as the base, angles acute ; base strongly arcuate in the middle, sinuate in the middle of each side, and thence straight and transverse to the basal angles which are right and not at all rounded ; disk strongly convex, densely finely and coalesnently punctate, punctures round, deep and somewhat scabrous toward the sides, interspaces very minutely granulose. Elytra at base very slightly wider than the pronotum, widest in the middle where they are about one-half wider than the pronotum ; sides rather strongly arcuate, strongly convergent and nearly straight to the apex which, conjointly, is somewhat obtuse but scarcely rounded ; disk from above two and one-half times as hmg as the pronotum, convex, strongly declivous toward the apex, finely feebly and rather densely punctate, punctures almost uniformly distributed; striate, striae scarcely perceptibly impressed and very slightly more densely punctate, darker in color ; surface also confusedly creased. Under surface finely punctate, the metasternum sparsely and more coarsely so, the abdomen very densely ; prosternum and its side-pieces eqiTally strongly and confusedly ruguloso-punctate. Legs slender ; anterior tibiae slightly prolonged externally at tip, terminal spurs almost exactly equal, long and stout ; first joint of the corresponding tarsi slightly longer than the next two together; first joint of the posterior much longer than the next two together and very slightly shorter than the last ; claws very long and slender, perfectly simple. Length 9.5 mm. ; width 4.2 mm.
Texas, 5.
Tlie description is taken from the female. There is a very narrow median space toward the base wl)ich is very sparsely punctate, but which is scarcely noticeable ; the anterior iangles are acute but not produced, and the surface is very evenly convex througiiout ; in the male the punctuation is less dense. I cannot identify it with any of the species described in the Biologia Cent.-Amer.
BI.APSTI1VIJS Latr.
B. pinialis n. sp. — Form rather slender, moderately convex. Color black above, piceous-black beneath, legs slightly paler, dark fuscous, au-
186 NORTH AMERICAN tennae scarcely paler except toward base where they are slightly piceons ; pubescence above rather fine, short and sparse, recumbent, dark fulvous, more conspicuous beneath, cinereous. Head distinctly wider than long; anterior angles very broadly rounded ; apical margin narrowly and feebly sinuate ; eyes small ; surface feebly convex, rather coarsely densely deeply and sliglitly confusedly punctate, punctures slightly elongate ; antennae as long as the pronotum, rather slender, slightly geniculate, outer joints distinctlycompressed,secondone-halfaslongasthetliirdandthree-fourthsas long as the fourth, about as long as wide, seventh sub-globular, eightli slightly wider than long, ninth still wider, ninth and tenth equal in width, eleventh slightly narrower, conoidal, very slightly longer than wide, joints four to nine sub-equal in leiifitb ; labrum very short and transverse, rather deeply sinuate anteriorly. Prothorax widest at the middle where it is about one-lialf wider than long ; sides evenly and feebly arcuate ; apex slightly shorter than the base, broadly and feebly emarginate, angles from above right and slightly rounded ; base broadly arcuate in the middle, distinctly sinuate near the basal angles which are right and very slightly rounded ; disk broadly convex, narrowly and acutely margined at the sides and along the base, coarsely deeply very densely and nearly evenly punctate ; ijunctures perforate, elongated, interspaces nearly flat, very minutely granuloreticulate. Elytra at base as wide as the pronotum, slightly wider at twothirds the length from the base ; together thence gradually and acutely rounded behind; sides very feebly arcuate anteriorly; disk about twice as long as the head and prothorax together, coarsely striate ; striae feebly impressed,punctate: punctures round, rather fine, feebly impressed, distant in the rows by nearly twice their widths, intervals feebly convex, finely and feebly ruguloso-punctulate, moderately shining. Under surface finely and sparsely punctate ; prosternum deeply and very densely punctate, scabrous, side-pieces very densely and longitudinally rugulose ; first three ventral segments decreasing very gradually in length, fourth shorter ; sutures betweenthe last three segments very deeply impressed. Legs rather slender ; first joint of the posterior tarsi longer than the next two together. Length 4.7-5.0 mm.
Arizona (Morrison), n.
Tiie jtubescent'e of the elytra is rather coarser ami more conspicuous tlian that ol" tlie lieail and pronotum. In general form this species reseml)h's piilreriilentns Mann., being only a little shorter and more robust ; it diflers from that species in its rougher and more dense sculpture and especially in the form of the pronotal punctures, wiiich are circular in pulverulenfus, and in its very much deeper and d<'nser rugulosity of the prosternal side-pieces; it should probably follow that species in the catalogue.
MORDELI.A Linn.
M, deserta n. sp. — Form rather robust: sides nearly parallel. Pubescencevery coarse, close, recumbent and sericeous, setiform, very pale fulvo-
COLEOPTKRA. 187 cinereous on tlie flanks of the head and pronotuni, piceous on the middle portions of the disk, also fulvo-cinereoiis in two hroad lateral vittae extendingfrom the humeri of the elytra to the apex and slightly increasing in width through the basal third, also on the scutellum and very narrowly along the suture ; .on the remainder of the elytral surface dark piceous-brown by reflected light, dark reddish-purple by transmitted light ; integuments uniformly piceous-black, very finely feebly and closely punctate, much more finely so on the pi'othorax than on the elytra. Head slightly wider than long; interocular surface broadly and very evenly convex throughout; eyes continuous in curvature with it and somewhat large, rather finely granulated ; anterior margin of the epistoma narrow and very feebly arcuate, slightly less than one-half as long as the distance between the eyes ; last joint of the maxillary palpi more than twice as long as wide, so obliquely truncate as to be scalene in outline, truncated edge very broadly arcuate ; antennae short, scarcely longer than the width of head, first and second joints nearly equal in length, shorter than the third, first four joints subcylindrical, five to ten decreasing in length, narrowed toward base, trapezoidal,the former slightly longer than wide, the latter distinctly transverse, eleventli longer than wide, oval in outline, obtusely rounded at tip, joints five to eleven strongly flattened. Prothorax one-third wider than long, rather strongly and evenly convex; sides feebly and evenly arcuate ; apex . very slightly shorter than the base, broadly and somewhat angularly arcuate, the latter strongly and abruptly arcuate through the middle third. Scutellum slightly wider than long, evenly and acutely rounded behind, sides feebly arcuate, surface flat, finely and asperately punctate. Elytra at base just visibly narrower tlian the pronotum ; sides parallel and nearly straight for three-fouii;hs the length from the humeri, thence rather obtusely rounded behind, each elytron evenly and rather acutely rounded at apex ; disk conjointly very slightly more than twice as long as wide. Legs and under surface of the body black, with ^ne fulvo-ciuereous pubescence; posterior tarsi longer than the femora, first joint much longer than the next two together, slightly shorter than the tibiae ; tibiae and first three tarsal joints densely fimbriate at tip with short stout equal spinules ; claws feebly arcuate, not at all cleft nor pectinate, but having on the inner edge two or three very minute tuberculiform denticulations ; spurs of posterior tibiae rather long, very stout, acute, straight and very unequal. Length from tij^ of anal style 4.5 mm. ; width of pronotum 1.7 mm.
Arizona, 1.
According to the table given by Mr. J. B. Smith, tliis species would enter the first of his groups in the second division of Mordella, and I see nothing there which will at all fit the above description. XYLOPHILUS Latr.
X. densus n. sp. — Form elongate, rather slender, sub-cylindrical, intenseblack throughout, antennae piceous, last joint pale testaceous, femora piceous, tibiae and tarsi paler, dark testaceous ; pubescence very fine, short,
188 NORTH AMERICAN sub-recumbent, plumbeous, rather dense but not at all conspicuous, uniform in color tlirougliout, mucli more sparse beneath ; integuments sliining. Head moderate mueli wider than long ; base broadly and roundly eraarginate throughout ; basal angles slightly prominent, narrowly rounded ; eyes very large, coarsely granulated, glabrous, at less than one-third their length from the tips of tlie basal angles, inner edges feebly sigmoid, strongly convergent anteriorly ; interocular surface finely strongly and evenly punctate, puncturesroun<l, perforate, distant by about twice their own widths, interspaces feebly sub-granulose, flat ; antennae rather distant at base, robust, onethird longer than the width of liead ; excavations deep, narrowly margined, entering the eye as a rather feeble emargination ; first joint moderately robust, slightly elongate, oval, second very slightly narrower, sub-globular, thiid slightly narrower, much elongated, about as long as the next two together, four to six slightly wider, quadrate, seven to eleven abruptly wider, increasing slightly in widtli, forming a five-jointed club, seventh very slightly wider than long, tenth one-half wider than long, eleventh conoidal, moderatelyelongate ; last joint of the maxillary palpi nearly twice as wide as long, transversely truncate and spongy at the apex, triangular, convex outwardly, slightly concave internally, remaining joints very narrow. Prothorax widest near the middle where it is one-third wider than long; sides strongly convergentand nearly straight antei'iorly, less strongly convergent and feebly arcuate to the base which is nearly transverse ; basal angles obtuse, not at all rounded, somewhat prominent ; apex broadly arcuate, about two-thirds as long as the base ; disk broadly convex, finely very densely and strongly punctate ; punctures perforate, round, generally separated by their own widtiis or less ; aiear the base there is on each side of the middle a large deeply impressed lunate area, the two being completely divided. Scutellum small, nearly circular. Elytra three-fourths wider than the pronotuui ; sides parallel and nearly straight ; humeral angles rounded; together rather abruptly and obtusely rounded behind, leaving the tip of the pygidium exposed ; disk broadly convex, distinctly more than twice as long as wide, rather finely very deeply and nearly evenly punctate ; punctures perforate, round -near the base, finer and more elongate near the apices, generally separated by twice their own widths, interspaces flat, extremely minutely punctulate ; each elytron is narrowly margined along the suture, and is broadly impressed in the middle near the base and slightly swollen between the impression and tlie scutellum. Legs slender; posterior femora strongly toothed on the internal edge at two-thiids the length from the base, the opposite outer edge is also slightly swollen. Abdomen finely punctate and minutely reticulate. Length 2.0 nnii.
Gleiiolden, neai" Pliiladelphia, 1.
I can distinguish but tour ventral segments besides tlio very short pygidium, the lirst two being perhaps connate and together as long as tlie remaining tliree. The only species whicii can be conibunded with this is iinpressus, after which it should stand in the catalogue; it ditl't-rs from tliat species, according to Dr. LeConte's description, in size color and t'orni.