i aden . 4 w % ‘ : . : . 4 . 7 : . : 7 o . - * 7 : : ’ ’ — 7 ="; 1 ‘ - ~ ‘ 7 7 ‘ » . = 4s A o1'6 +4 . <7» 1@s - _ wh fa ee- 7 1 Cr . 7 7 . i : 7 7 - wy 8 ’ =l>es a + Pluses : 7 7 8 i . rag ‘ Le i ee ——- se =ee - = me a Ohl sae owe we 8D - —“e oe e — : : - 7 - y tie 7 : . 1 From the Library of Professor Henry F. Wickhan University of Iowa Presented in 1942 ATURAL 47 1943 HISTORY AUS a » , by ey ; . i 7 yy 4 . j 4) Ms t iv ‘ ‘ hy : ey Ar f] fi ' ‘ es ’ f . , asi 4 a ore ie es ‘ot 1 & A +h, niwalitt ay N ert dary ‘ Va pay af " tA i ba a sat BWA ey Mae . 4, 2 is UW rast Y ee ' de uh \ rp Se "4 , 7 : ” «« , ‘ ‘ 4 Mi - ‘ A ty + ‘ ‘ s 7 ‘, — . i » i ’ y : r “9 \ it * e < e 4! pt q + thy" : ary At Fs x i vi n * ' - ‘ y / A * i ON THE BY HOS. Lb. CASEY 1920 PUBLISHED BY Tue New ERA PRINTING COMPANY LANCASTER, PA. B ae Oe wee ey ey ath a hs * en ai h ae j be y ean aa v x vt ‘ “a 4 ware Netuyaf Hicts ae lw 2< (cf ban~ 5. > CONTENTS ; ; PAGE Ee A Revisional Study of the American Platynine 1 II—Random Studies among the American Cara- US ST A sot Re a eae 133 | —Some Descriptive Studies among the American LES Nc ya ae ae ey a 300 é en sae ‘a re ‘ab Digitized by the Internet Archive in 2010 with funding from University of Illinois Urbana-Champaign http://www.archive.org/details/nemoirsoncoleopt009case I—A REVISIONAL STUDY OF THE AMERICAN PLATYNINE. In his synopsis of Platynus and allied genera (Proc. Acad. Phila., 1854, p. 35) Dr. LeConte gave a very good historical account of the vicissitudes of meaning accorded the old generic names Platynus, Anchomenus and Agonum of Bonelli, by various authors, alluding especially to Brullé and Erichson, the former of whom placed all under the name Platynus, while the latter, as well as Lacordaire, preferred Anchomenus for the three united genera. The most recent European list unites them all under A gonum—the third and only remaining alternative. As a result of my own studies, I am disposed to regard the three genera of Bonelli as sufficiently well circumscribed and habitally differentiated among themselves to be held as valid, and have also added some other genera, a large pro- portion of the new names being rendered necessary by singularly isolated neotropical types; several of these were recognized by Bates as compelling the use of new generic terms, but that author has, it seems, combined too many divergent forms under his con- ception of the wrongly identified Colpodes, which, unless limited to the more characteristic species, would admit of no accurately scientific definition whatever, as a congeries of species distinct from typical Anchomenus. Many of the species assigned to Colpodes by Bates are purely and typically Anchomenus, where a feeble inequality in the projections at the sides of the sinus in the fourth tarsal joint frequently becomes evident. I have therefore limited the Colpodes of Chaudoir and Bates to those species in which the fourth anterior tarsal joint is very deeply and conspicuously bilobed, and which at the same time possess a facies of the body and character of coloration distinguishing them at least to some degree from the true Anchomenus. ‘These characters are so in- definite, however, that I am forced to regard the neotropical so- called Colpodes, here given the name Plocodes, taxonomically as a subgenus of Anchomenus, though assigning full generic value to a few aberrant species placed under Colpodes by Mr. Bates. T. L. Casey, Mem. Col. IX, Jan. 1920. MEMOIRS ON THE COLEOPTERA to In defining the genera of Platynine, a great deal of consideration must be given habital differences and peculiarities, as in the Ptero- stichine, for radical divergencies in the structure of special organs and parts of the body are comparatively rare, while the habital differences are so constant throughout large groups of species, as to indicate beyond doubt that this is the natural method to pursue in defining genera. The numerous species of A gonwm, for instance, hold together remarkably well in habitus and, as a whole, present a very different appearance from Anchomenus, so that to unite the two would be quite repellant from the standpoint of what is known as the sense of proportion. So also the various species of Euro- philus, which in this case are distinguished, besides habitus, by a well marked special antennal structural character, form a very consistent whole, differing greatly from Anchomenus and showing that they form a truly valid genus. The Platynine form an extensive and important element in the Carabid fauna of the northern hemisphere, but are very much more developed in North America than in Europe. The genus Platynus Bon., itself, I hold to be exclusively European, our wingless species constituting three or more allied genera, of which Rhadine Lec., stands widely apart in general appearance from any other type of the subfamily. The genus Anchus, of LeConte, is not considered in the present revision, although in my own opinion it should constitute one of the subgenera of Anchomenus, valid as a genus if the others are also valid. LeConte placed Anchus near Atranus as an aberrant type; in the latest European catalogue it is considered a subgenus of Agonum in the broad sense there given the latter genus and the type, pusillus Lec., is held to be a synonym of the European obscurus Hbst.; but I am unable to confirm this reference.* * The following is a newly discovered species of Anchus: Anchus puncticeps n. sp.—A little larger and notably stouter than pusillus, piceous, shining, the elytra piceous, broadly nubilously testaceous peripherally; under surface piceo-rufous, the epipleura and legs flavate; head as in pusillus but a little broader, the surface with numerous rather strong punctures, almost wanting centrally; an- tenn similar but a little longer; prothorax similar in general features but broader and somewhat more pubescent, the parallel sides anteriorly rather more rectilinear; elytra nearly similar and sparsely puberulent but broader, the strie deeply impressed and smooth, the feebly convex intervals punctulate; tarsi very slender. Length (2) 6.2 mm.; width 2.22 mm. Canada (Ontario). Levette collection. PLATYNINAE 3 In the present paper I have limited investigation solely to the old composite Platynus of our lists, the genera with fimbriate ungues being omitted. Olisthopus, having simple ungues as in Platynus but differing in having no mentum tooth, has been previ- ously reviewed (Mem. Coleop., IV, p. 168) and is therefore also omitted. The species are extremely numerous and are probably at least a thousand in number in North America, and, so far as known to me at present, may be assigned to fifteen genera as defined below, of which five are entirely neotropical. Only inci- dental reference is made to the grouping of LeConte (I. c., p. 40) or to that of Zimmermann (Tr. Am. Ent. Soc., 1869, p. 244), as I preferred to work out as nearly as possible an original scheme, which by comparison with the others, will furnish additional co- ordinated data to aid future students of this very difficult subject. The elaboration of this review of the species of my collection has involved a great deal of hard work, and its completeness has been aided materially by a number of friends to whom I return sincere thanks in the name of future students of the various genera. Prof. Wickham sent a particularly interesting collection and Mr. Léding, of Mobile, sent some rare or local forms that I had long wanted, such as Platynus quadrimaculatus and picticornis, both very peculiar and isolated types. Mr. Knaus also sent a number of valuable specimens, and to others, among whom are Prof. Cockerell, Mr. Leng, Mr. Tom Spalding and Mr. Beutenmiiller, my thanks are due for lesser but none the less appreciated favors. The genera may be tabulated as follows: + Pubescence of the antenne beginning on the fourth joint............. 2 Pubescence beginning on the third joint; body very small, rather UNGER Sob Goetotue Sbera ot 2 aed RoR Rol nee aaa i II 2—Body apterous, depressed, elongate, the legs and antenne long and slender, the third antennal joint distinctly longer than the fourth..3 Body winged, except in some subgenera of Anchomenus; surface less enkesscd moenerally COMVEK:. one. cicce se een te te sscc kere. 4 3—Elytra shining, frequently with irregular interstitial punctures, the strie deep, the intervals convex; prothorax long, subcordiform, The type has been compared carefully with the same sex of pusillus and I have scarcely any doubt of the specific validity of puncticeps; pusillus is present in ample series in my collection from Rhode Island to Montana, and is invariably smaller and much narrower than puncticeps, but the head toward base frequently becomes almost as conspicuously punctate. 4 MEMOIRS ON THE COLEOPTERA much reflexed at the sides and with rounded basal angles. [Type ELON CANN POUR US SAY yore evaelecicielioete eee Platynidius Elytra opaque to shining; prothorax long, subcordiform, feebly to strongly reflexed at the sides and with sharp to blunt right basal angles; facies often as in Anophthalmus or Anthicus. [Type R. [scl AU teh bn ela ir A eRe IORI ORO moto 3 Rhadine Elytra opaque or alutaceous, finely striate, with flat intervals; prothorax not elongate, strongly and widely reflexed at the sides, with rounded or obtuse basal angles and large concave basal impressions; elytral strie fine. [Type Platynus chihuahue Bates]...... *Hemiplatynus 4—Head with a single superciliary puncture; posterior thoracic marginal puncture wanting; prothorax relatively narrow, parallel, with almost straight sides. [Type A. recticollis nov.]............ *Anacolpodes Head with the usual two superciliary punctures; prothorax never so rectilinearly parallel... 2... .2.....0. 0082022 00) eer 5 5—Prothorax trapezoidal, widest at or near the base, the sides reflexed, very broadly so toward base; elytra rather inflated; antenne long and very slender, the third and fourth joints exactly equal. [Type Colpodes encicauda Bates|.4> 4-2 ..-+- 0 ea5- eee *Trapezodera Prothorax quadrate, nearly as in Calathus, with the sides broadly reflexed basally, the basal angles obtusely blunt or rounded; antenne nearly as in the preceding. [Type Anchomenus sulcatus Dej.]...Tanystola Prothorax rather inflated at or before the middle, narrowed toward base ANG APEX: 26 siyes sesfdiaels visi «cs eee dee oO Re 6 6—Posterior thoracic angles sharp or at any rate more or less distinctly defined; prothorax more or less cordiform; hind body evidently inflated, always very much wider than the anterior parts; legs and antenne more or less long and slender. [Type An. sinuatus Dej.]. Anchomenus Posterior thoracic angles broadly rounded, rarely becoming evident though blunt or very obtuse. ....-....22....-<- 46s) e eee i 7—Posterior thoracic marginal puncture wanting; prothorax long, gee and strongly reflexed at the sides; subbasal fovee large, oncave and smooth. [Type M. panamense nov.]...*Macragonum Posterior puncture distinct as usual... 22.5... - 2 eee eee 8 8—Prothorax about as long as wide; body small to very small in size; hind body more or less inflated, oval, always much wider than the 9—Prothorax circularly subquadrate, more or less convex, very finely reflexed at the sides, the basal fovee small, sharply defined, smooth and punctiform; body convex, with thick and highly polished integuments. [Type Feronia punctiformis Say].......... Circinalia Prothorax subcordate, the basal impressions large and concave, not definitely prolonged anteriorly, the sides extremely finely reflexed or beaded; body rather less convex. [Type Feronia nutans Say]. Micragonum Prothorax nearly flat, widest before the middle as a rule, very finely reflexed at the sides, the basal impressions very feeble and in- PLATYNIN-E 5 definite; hind body only moderately convex. [Type E. vixstriatus Etesiis «cn Boh Bean oadia act OES aoe one eee *Elliptoleus Prothorax parallel, with moderately, subevenly arcuate sides and sub- truncate apex and base; body very small, rather slender, with thin pallid integuments. [Type Pl. nigriceps Lec.].. .Platynomicrus 10—Body very small in size, the hind body much wider than the head and prothorax, subparallel; lustre sometimes densely sericeous. [iv peo. vemotdtoides Kirby]. .¢.. oc... 2.. cece cece e eens Sericoda Body larger and generally stouter, more oblong, the hind body never more than moderately wider than the prothorax, the latter usually transversely suboval; form more compact than in Anchomenus and with shorter legs and antenne; metallic lustre highly developed in puemroup: (Lype Huropean|.. ose) ee cee cee ee eee Agonum 11—Body small, rather slender and convex, with only moderately thick integument, the head narrow; prothorax much narrower than the elytra, about as long as wide, with arcuate sides, rounded angles and rather large concave subbasal impressions, the sides very finely reflexed, sometimes more distinctly so basally; elytra oval, finely striate; legs and antennez long and slender. [Type European]. Europhilus The genera marked by a prefixed asterisk are neotropical, none being known from. above the latitudes of southern Mexico. The remainder occur for the greater part in Atlantic subarctic regions, Anchomenus, Agonum and Sericoda being common to the Atlantic and Pacific regions; Yamnystola is peculiar to the latter part of the continent. As a whole, representatives of the subfamily are much less abundant and diversified in the Pacific than in the Atlantic regions. On comparing the Platynine as a whole with the Pterostichine, the more loosely articulated body and smaller, narrower head, thinner integuments and absence of the subapical elytral marginal fold in the species of the former subfamily, are features to,be espe- cially noted, as well as the generally much smaller size of body. ‘In most respects the Platynine are intermediate between the Pterostichinz and the Lebiine. The elytra are, however, never so truncate at tip as in the latter subfamily and some other types of the Carabide; which might be thought to be closely allied. In most of the Carabidz, as generally well known, there is at the elytral base on each side of the scutellum,a singular modification of the striation, to which very little serious attention seems to have been given. Excepting in Pseuwdomorpha, which probably consti- tutes a distinct family, and a few more normal Carabids such as 6 MEMOIRS ON THE COLEOPTERA Anophthalmus, there is, near each side of the scutellum at base, a small ocellate puncture, from which a short stria proceeds posteriorly as a rule. I have had occasion before (Mem. Col., VIII, p. 404) to allude to peculiarities of this stria, in relation to the first regular stria of the elytra in the Pogonine. In rare instances there is no puncture of this kind and sometimes there may be a puncture but no attendant stria, as in some Evarthrids, but just now I desire more especially to call attention to the relative positions of the scutellar stria, as this short stria has been termed, and the first true stria of the elytra. As stated of the Pogonids, it is the basal part of the first regular stria which is deflexed outwardly to the ocellate puncture at or near the basal end of the second stria; this is also the invariable condition among the Platynids and most of the Lebiids, but throughout the great subfamily Harpalinz the first regular stria attains the base between the puncture and the scutellum, and the scutellar stria extends posteriorly between the first and second regular striz. I am unable to suggest anything relating to the etiology of this singular scutellar stria and attendant ocellate puncture; they may be the last remaining vestige of some useful structure in the early stages of development; but, at the same time, some such remark ap- plies to several other very permanent and characteristic structures of the Coleopterous wing case, which we are accustomed to pass over without speculative reasoning of any kind, such for example as the series of coarse ocellate punctures along the sides of the elytra, or the small oblique sinus near the tip of each elytron, the constancy and persistence of which characters, at the present epoch of their history, suggesting that they may be the remnants of some very important structural conditions prevailing during the earlier evolutionary stages. Platynidius n. gen. The species of this genus are decidedly above the average of the subfamily in size of the body and are singularly isolated in regard to facies; they probably form the closest American analogue of the true European Platynus, but seem to differ in many characters, such as the longer prothorax, with broadly rounded basal angles, and in the abnormal interstitial punctuation of the elytra. The PLATYNINE z antenne are very long and filiform, but the third joint is only slightly longer than the fourth—not so decidedly so as in Rhadine. The sides of the pronotum are widely and strongly reflexed, the edge slightly sinuate just before the rounded basal angles, the posterior setigerous puncture a little within the edge and well before the base. The basal fovee are large, deeply concave, elon- gate, adjacent to the sides and smooth. The head is elongate- rhomboidal, the palpi long, the elytra much wider than the pro- thorax, elongate-suboval and but feebly convex, always shining and with more or less coarse deep striz and convex intervals. The legs are notably long. The met-episterna are only moderately elongate and less so than might be presupposed from the very elongate hind body. The species are moderately numerous and those at hand may easily be separated as follows: Alternate intervals of the elytra each with two series of many rather irregular punctures, which adhere to the bounding strie; legs pale CYTO TIISe 9. octet EOS BIO eC TOI.S OG BS putea eRe eeaaeN CRG See 2 Alternate intervals each with a single series of punctures, more sub- axially situated, very widely spaced, a little closer basally as a rule; Famed laa eo plCCGUsmPens cc mitt Meta tals: wclas. cselicd cameo e siaehaale 3 Alternate intervals impunctate as well as the others, the regular derail punctures, three or four in number, being confined to the, third in- terval as usual in the subfamily; legs dark..................... 4 2—Upper surface piceous-black throughout; under surface piceo-rufous; head three-fourths as wide as the prothorax, with prominent eyes, the front with two nubilous reddish spots; mandibles, labrum and the long slender palpi pale rufous; antenne ferruginous, fully three-fifths as long as the body; prothorax as long as wide, widest near anterior third; base transverse, as wide as the sinuate apex; apical angles obtusely prominent; surface perfectly smooth and impunctate, the transverse impressions distinct, linear, the posterior cuspidate on the median line, which is finely impressed; elytra shorter, not more than one-half longer than wide, four-fifths wider than the prothorax; subapical sinus not very oblique and just perceptible in curvature; scutellar stria short, parallel; side margins strongly reflexed. Male with the first three anterior tarsal joints parallel and straight at the sides, oblong and equal in width; basal joints of the posterior tarsi finely striate along the sides; last abdominal segment very broadly rounded at tip, with a single puncture at each side; in the female the tarsi are simple, the last ventral still more obtusely and broadly rounded, with two or Jose setigerous punctures at each side. Length (o’ 2) 13.5-15.0 mm. width 4.8-5.3 mm. Indiana. [Platynus erythropus Dej.]. hypolithus Say Upper surface evenly deeper black and rather more shining; general 8 MEMOIRS ON THE COLEOPTERA form and structure nearly as in the preceding; prothorax similarly widest before the middle but less inflated anteriorly, so that the sides are less strongly rounded; elytra a little longer, more than one-half longer than wide in the male, as usual a little longer in the female, the broad subapical oblique sinus a little more evident; punctures of the alternate intervals more numerous but as usual sparse apically; under surface blackish-piceous. First three joints of the anterior male tarsi broader than in the preceding, the third joint less than one-half longer than wide and not nearly twice as long as wide as it is in hypolithus. Length (o' 2) 14.0-15.0 mm.; width 5.1-5.5 mm. Ontario. Levette collection. .ontariensis n. sp. 3—Form narrow, elongate, more depressed than in the preceding group, piceous-black, shining, the legs nearly black; head relatively larger, nearly as wide as the prothorax, strongly rhomboidal, with moderate but prominent eyes, with the usual slender pale palpi, the antenne three-fifths as long as the body; prothorax smaller than usual, slightly elongate, inflated anteriorly, with the sides more evidently sinuate posteriorly and the angles similarly broadly rounded, the smooth and deeply concave fovez traceable fully to the middle; margins similarly strongly reflexed; transverse impressions fine, deep; median stria deep but obliterated submedially; base slightly narrower than the apex; elytra nearly twice as long as wide, almost twice as wide as the prothorax, the sides gradually rounding basally, the apex rapidly and narrowly oblique, distinctly sinuate; strice smooth as usual, deeply impressed, the scutellar parallel; punctures bearing rather long fulvous sete. Male with the first three anterior tarsal joints narrow, parallel, rapidly narrowed at base, the third one-half longer than wide; lateral groove of the posterior tarsi deep; abdomen as in hypolithus. Length (o' Q) 11.5-13.0 mm.; width 3.8-4.2 mm. North Carolina (Black Mts.),—Beutenmiiller. Houmexam ples;..:scepye te eee ccots ets. ase terorne Met e Tete gracilentus Beut. Form: much less narrow, larger in size, similar in coloration and in the shining lustre; head similarly elongate though wider and less strongly rhomboidal; front with two small indentations transversely placed between the eyes; antenne ferruginous, even longer than in the preceding; prothorax larger, much wider than the head, barely as long as wide, the strongly reflexed sides more broadly rounded, less sinuate posteriorly; surface nearly similar, the finer median stria less evidently subinterrupted medially; base much wider, fully as wide as the apex; apical angles more obtusely rounded; elytra oval, two-thirds longer than wide, not quite twice as wide as the prothorax, subinflated posteriorly, the sides more rounded basally than in the preceding, the rather obtuse apex, sinus and fulvous sete nearly similar. Length (Q) 14.5 mm.; width 5.15 mm. North Carolina (Black Mts.),—Beutenmiiller. One example. enormis n. sp. 4—Antenne clear rufo-ferruginous throughout....................-- 5 Antenne blackish toward base... «1. senate see ees ieee ee 6 5—Body stouter, polished, piceous-black and moderately convex; under surface and legs dark rufous; head moderately elongate and rhombi- PLATYNIN4E 9 form, distinctly narrower than the prothorax, the eyes notably large and prominent; front with a small feeble discal indentation near each eye; superciliary punctures small but distinct; mandibles long and slender; palpi ferruginous; antenne filiform, half as long as the body; prothorax rather convex, very smooth, not as long as wide, strongly rounded and reflexed at the sides, the latter oblique and barely subsinuate basally to the broadly rounded angles; anterior impression deep medially, the posterior feeble and rather indefinite, the median stria fine, interrupted behind the middle, attaining the base as usual; fovee deep, smooth, scarcely traceable _to the middle; base unusually narrow, not as wide as the apex and only three-fifths the maximum width; elytra (2) one-half longer than wide, not quite twice as wide as the prothorax, subinflated posteriorly, the sides feebly arcuate basally; sinus long, moderately oblique and very feeble; striz smooth, very deep, the scutellar coarse, subparallel; intervals strongly convex, very smooth, the third with four punctures; ocellate lateral series rather coarse; abdominal apex (9) very obtuse, with two setigerous punctures at each side. Length (2) 14.0 mm.; width 5.0 mm. New York HeNCTardaGka Mts) \0s. sae ee ee 4 4—Body larger and stouter, never notably metallic; sides of the pro- thorax more or less strongly reflexed; met-episterna short to rather long; dorsal punctures three or four................ IV (sinuatus) Body smaller and more slender, frequently metallic or bicolored; sides of the prothorax very finely margined; met-episterna long; dorsal punctures three toOsixy je. «eeu Leese cites tee V (funebris) The above species assigned to represent these groups only hold good for the present work, and ina general revision other older and better known forms might be chosenin some instances. Guerrerensis is a species which appears to represent Chaudoir’s ideas of Colpodes, as also those of Mr. Bates, although both authors assigned many species to the genus so identified which cannot remain there. The species which forms the type of the subgenus Plocodes, is here described as new because I cannot identify it positively. This is not very important or conclusive, however, as the true type of PLATYNIN-E 23 Colpodes is an East Indian insect, which is generically different from any of the Mexican forms hitherto assigned to Colpodes. There can be little or no doubt that the species of the guerrerensis type, whatever this may prove to be if previously described, form a mere section of Anchomenus as heretofore defined. In fact in Anchomenus reflexus Lec., there is a decided inequality of the pro- jections of the fourth tarsal joint, but it is wholly impossible to separate this species in even a subgeneric sense from cincticollis Say, and other allied species. Chaudoir noticed this asymmetry of the fourth joint in reflexus, which he quoted under the original preoccupied name marginaius, and assigned it definitely to the Mexican so-called Colpodes, but I am sure for very inadequate reasons. Group I (districtus) Subgenus Platynella nov. The rather numerous species of this group belong to a section forming part of the very composite Colpodes as understood by Chaudoir. They appear to be apterous, have an unusually large head, rather thick compressed antenne, sharply triangular mentum tooth and rather slender palpi, with the last two joints subequal as arule. The prothorax is as long as wide or longer, the sides rather strongly reflexed and sinuate basally to the usually sharp angles, the foveze moderate and nearly always smooth, there being no pronotal punctures. The elongate-oval elytra have rather fine impunctate striae, feebly sinuate apices and generally rounded sutural angles, and [there is a sharp angle between the sinuate basal line and lateral margin. The species Colpodes marginicollis of Chaudoir, seems to be one of this series, but is not accurately identi- fiable among so many allied species; all of those at hand seem to be represented by the female alone, and the two examples of margini- collis known to Chaudoir were also females. The five species at hand, belonging to the fauna of southern Mexico, may be described as follows: Tempora swollen in a peculiar manner and almost as prominent as the eyes. Body slender, rather convex; under surface and legs blackish- piceous; prosternum and coxe paler; head and pronotum shining, blackish-piceous, the elytra blacker and opaculate; head large, five-sixths as wide as the prothorax, with broad neck, the eyes very 24 MEMOIRS ON THE COLEOPTERA moderate and only slightly prominent; anterior impressions small and feeble; posterior superciliary puncture remote from the eyes; antenne long, fully half as long as the body, fusco-ferruginous, the third joint much longer than the fourth; prothorax slightly elongate, the apex moderately sinuate, much wider than the base and with rounded angles; sides broadly arcuate, becoming broadly sinuate basally, broadly reflexed, especially at base, forming the foveal cavity, the angles right, sharp; base feebly sinuate, arcuate laterally; transverse impressions feeble, the stria sharp, impressed, subentire; elytra elongate-oval, nearly twice as long as wide, almost one-half wider than the prothorax, very oblique at apex, the sutural angles briefly divaricate and obtusely subangulate; striz very fine; dorsal punctures four, the first on the third stria, the others on the second; met-episterna short, as wide as long; tarsi slender, the upper surface finely and’ uniformly, longitudinally strigilate, and the fourth joint feebly and symmetrically emarginate; posterior tarsi also with lat- eral groove, the fifth joint scarcely ciliate. Length (2) 9.7 mm.; width 3.7 mm. Mexico (Tres Marias, Morelos), —Wickham. *districtus n. sp. Mempora not tumid behind) the’eyesssa-s.-- es) oe Joleen 2 2—Dorsal punctures of the elytra three in number. Body elongate, rather convex, deep black throughout, the legs black, the surface shining, the elytra opaculate; head large, fully five-sixths as wide as the prothorax, with broad neck and moderate, rather prominent eyes, the tempora feebly converging and slightly arcuate behind them; posterior puncture fine and rather distant from the eyes; anterior impressions long, oblique, very feebly and vaguely im- pressed; palpi piceous-black; antennz piceous, black basally, less than half as long as the body, compressed, the third joint distinctly longer than the fourth; prothorax as wide as long, the sides sub- parallel, broadly arcuate, becoming rapidly sinuate before the right and very sharp basal angles, moderately and subequally reflexed throughout; fovez feebly impressed, the surface flat thence to the sides; impressions shallow, the stria fine; base rectilinearly trans- verse, barely narrower than the sinuate apex, the apical angles ‘rather prominent and not rounded; elytra three-fourths longer than wide, one-half wider than the prothorax, widest a little behind the middle, the oblique apices very feebly sinuate, the sutural tips rounded; striz fine, the intervals flat, the punctures all near the third stria; met-episterna a little longer than wide; tarsi smooth above, the anterior rather stout, parallel, the outer lobe of the fourth joint distinctly more prolonged. Length (2) 10.5 mm.; width 4.0mm. Mexico (Tres Marias, Morelos)—Wickham. *logicus n. sp. Dorsal punctures two) im numberesereeiereeiieetee ee ciclo +33 3—Head short, scarcely longer than wide, the eyes rather small and, but slightly prominent, the pronotal foteze broadly concave, merging gradually into the reflexed sides; dorsal punctures of the elytra very remotely separated, the anterior near the base. Form slightly more ventricose, black and shining, the legs and tarsi black, rather PLATYNINAE 25 convex, the elytra only slightly alutaceous; head not over three- fourths as wide as the prothorax, with very broad neck; tempora feebly converging and slightly arcuate; anterior impressions small and feeble; antenne not quite half as long as the body, piceous, the third joint but little longer than the fourth; prothorax fully as wide as long, widest near the middle, the sides broadly and sub- equally rounded, becoming rapidly and moderately sinuate nearer the base than usual, strongly reflexed throughout; base slightly arcuate at the sides, with right and scarcely blunt angles, fully as wide as the apex, which is feebly sinuate and with roundly tipped angles; transverse impressions feeble, the stria finely impressed; elytra one-half longer than wide, two-fifths wider than the pro- thorax, the humeri a little less gradual than in the two preceding, the apex bluntly ogival, the sinus very feeble, the sutural angles evenly rounded; striz moderately fine, slightly impressed, smooth; intervals not quite flat; met-episterna somewhat elongate; tarsi slender, smooth above, the fourth joint feebly and symmetrically emarginate. Length (2) 9.0 mm.; width 3.6 mm. Mexico MEEREGEPTO) =“ aTON. cnc canis etc eee e ces ewes *baroni n. sp. Head elongate, with better developed and prominent eyes; pronotal fovee linear and separated from the sides by a convex surface; dorsal punctures of the elytra less widely separated, the anterior at or slightly before the middle; body less abbreviated and less ventricose, the elytral sides more gradually rounding basally.....4 4—Form moderately slender and convex, black, piceous beneath, the legs black; surface strongly shining, the elytra not opaculate; head narrower though nearly four-fifths as wide as the prothorax, the tempora rapidly converging and feebly arcuate; superciliary punc- tures as in the preceding species; anterior impressions moderately long, feebly impressed; antennz piceous, less than half as long as the body, strongly compressed, the third joint distinctly longer than the fourth; prothorax as wide as long, the sides subevenly rounded and rather strongly, subequally reflexed, becoming oblique and gradually feebly sinuate basally, the angles slightly more than right, with narrowly blunt tips; base slightly arcuate throughout the width, not quite as wide as the apex, which is moderately sinuate and with blunt angles; transverse impressions distinct, the stria fine, biabbreviated; elytra three-fifths longer than wide, more than one-half wider than the prothorax, rapidly and notably obtuse at apex, the sinus long and very feeble, the tips evenly rounded; striz smooth, rather fine, becoming coarser at tip, sharply defined; intervals virtually flat; anterior puncture at or just behind the middle; met-episterna slightly longer than wide; tarsi slender, smooth above. Length (9) 8.8 mm.; width 3.4 mm. Mexico (Tres Marias, Morelos),—Wickham......... *morelosensis n. sp. Form nearly as in the preceding but with the elytra less obtuse at apex, the rounded tips rather more prolonged, similar in coloration and lustre; head not so narrow and with still wider neck, more than four-fifths as wide as the prothorax, the rather long anterior im- pressions more oblique; antennz nearly similar; prothorax of . 26 MEMOIRS ON THE COLEOPTERA different form, fully as wide as long, the well reflexed sides obtusely angulate at the middle, thence oblique and nearly straight anteriorly to the rounded and subprominent apical angles, and posteriorly for a shorter distance to the rather abruptly formed sinus, at base becom- ing parallel for some distance before the angles, which are slightly more than right though very sharply defined; impressions similar, the anterior deep, the posterior feeble, the stria distinct; elytra two-thirds longer than wide and fully three-fourths wider than the prothorax, the long oblique sinus very feeble; striz fine, not coarse at tip; intervals flat; anterior puncture at or near basal two-fifths; met-episterna distinctly elongate, fully one-half longer than wide; tarsi nearly similar. Length (Q) 9.2 mm.; width 3.5mm. Mexico (Tres Marias, Morelos),—Wickham................ *infidus n. sp. Despite a few inconsistencies, such as the tarsal sculpture, swollen tempora and four dorsal punctures of districtus, the three punctures, broader tarsi and posteriorly inflated elytra of logicus, the shorter head and smaller eyes of baroni and the narrower head and differently placed dorsal punctures of morelosensis and infidus; these five species and probably some others already described, un- doubtedly form a rather homogeneous group, especially in the general habitus of the body, and I cannot avoid the conviction that they have but little close affiliation with typical forms of the Batesian Colpodes. A Group II (curtipennis) Subgenus Plantyus nov. In this apparently very restricted subgenus the body is notably abbreviated, moderately convex, with the outer joints of the rather thick antenne moderately compressed and with a fine longitudinal groove above and beneath, the triangular mentum tooth short and broad, the prothorax equally and feebly reflexed at the sides, the sinuate basal line and sides of the elytra forming an obtuse blunt angle at the humeri, and the met-episterna are very short, not quite as long as wide. The elytral apices and general structure otherwise are almost as in normal Anchomenus. The tarsi are smooth above and the fourth joint is simply sinuate at tip and bilaterally symmetric, without trace of the bilobation of the Batesian Colpodes. The type may be defined as follows: Form short and stout, deep black throughout the body, legs and an- tenne, the palpi black, with feebly diaphanous tip; surface shining, the elytra opaque; head but little longer than wide, three-fourths as PLATYNIN-E 27, wide as the prothorax, the eyes well developed and prominent; posterior puncture smaller than the anterior as in the preceding group, though not much further from the eye than the anterior; palpi obtusely pointed; antenne nearly half as long as the body, thick distally, slender basally, the third joint but little longer than the fourth; prothorax a fourth or fifth wider than long, the sides very evenly and moderately rounded, becoming slightly sinuate toward the basal angles, which are sharp and prominent at tip; base broadly arcuate from side to side, equal in width to the moder- ately sinuate apex, the apical angles subprominent though blunt at tip; surface very moderately convex, virtually smooth, with feeble transverse impressions and a fine stria extending only between them; fovez feebly impressed, distant from the sides; elytra only a third longer than wide, fully two-thirds wider than the prothorax, the sides evenly arcuate, not more so basally, the apical sinus not very long, distinct, the tips broadly rounded; strie fine, sharp, impunc- tate, rather deep, the scutellar short, parallel; intervals flat; dorsal punctures three, the two anterior at the third, the posterior near the second, stria; hind tarsi finely grooved externally. Length (of 2) 8.2-9.2 mm.; width 3.5-3.8 mm. Mexico (Tres Marias, Morelos) — Wickham. <<... 6.20 ae 0000 cies eo emers *curtipennis n. sp. This species would inevitably be considered an Anchomenus, even in the work of Mr. Bates, but I cannot identify it with any- .thing described or cited by that author in the “‘Biologia’’ or in any subsequent work. In general appearance it resembles nothing else known to me at present. Group III (guerrerensis) Subgenus Plocodes nov. Colpodes Chaud., Bates et al., nec MacLeay The type species here made known under this subgeneric name, cannot resemble. closely the Indian genus named Colpodes by MacLeay, though custom at present seems to demand that almost any neotropical Platynid shall be considered a Colpodes. In Colpodes, as represented by the Javan brunneus MacL., the men- tum is said to be edentate; the tooth in Plocodes is long and con- spicuous. In guerrerensis the met-episterna are greatly elongated, the humeri strongly rounded and the hind wings well developed; the anterior tibiz are canaliculate externally, the tarsi not medially sulcate above, the elytral tips rounded, the striz fine and the pro- thorax subcordate. These characters, in the arrangement given by Chaudoir (Ann. F. 1878, p. 377), would seem to bring it near 28 MEMOIRS ON THE COLEOPTERA purpuripennis Chd., which is from Mexico but only 7 mm. in length; the neighboring species all seem to be from South America. I have before me two species of this subgenus as follows: Form not very slender and moderately convex, shining throughout, piceous-black, the pronotum feebly diaphanous at the sides; elytra bright metallic greenish or violaceous; legs black, the tarsi piceous; head elongate, three-fourths as wide as the prothorax, with rather large and prominent eyes, the anterior impressions short, parallel; palpi black, with pale tip; antennz very slender, fuscous, fer- ruginous apically, nearly half as long as the body, the third joint evidently longer than the fourth; prothorax but slightly wider than long, the sides subevenly rounded and strongly, equally reflexed throughout, becoming feebly sinuate toward the basal angles, which are a little more than right but rather sharply defined; base transverse, equal to the moderately sinuate apex, the apical angles obtusely rounded; transverse impressions evident; fovee deeply impressed, smooth, elongate, traceable to the middle; elytra two- thirds longer than wide, nearly twice as wide as the prothorax, parallel and nearly straight at the sides, rounding at base, oblique and feebly sinuate at apex, the tips evenly rounded; strie rather fine but deep and groove-like, nearly smooth, rapidly becoming coarser and deeper at the apex, the scutellar long, parallel; intervals perfectly flat; surface feebly indented on the disk subapically; dorsal punctures three, the first near the third, the others near the second, stria;. tarsi with the fourth joint strongly bilobed, the lobes equal on the anterior, unequal on the other tarsi; upper tarsal surface bisulcate. Length (QQ) 11.5-12.5 mm.; width 4.5 mm. Mexico (Guerrero),—Baron...........-...--- *suerrerensis n. sp. Form nearly similar but less convex, smaller in size, shining, deep black above, the elytra with feeble bluish lustre, the under surface piceous, with rufous abdomen, the legs rufous; head but little longer than wide, fully four-fifths as wide as the prothorax, with large and extremely prominent eyes, the impressions short and deep but attenuated and approaching the eyes posteriad; palpi long, pale, the second joint twice as thick as the two following, which are very slender, the last a little shorter than the third; antenne long and very slender, fuscous, paler basally, two-thirds as long as the body, the fourth joint a little longer than the third or fifth; prothorax cordate, very nearly as long as wide, the sides parallel and moder- ately though circularly rounded from apex to near the base, where they became distinctly sinuate’and thence subparallel for a short distance to the angles, which are nearly right but with the tips bluntly rounded; base transverse, about as wide as the feebly sinuate apex; margins rather narrowly reflexed; surface with fine and very feeble transverse rugule; transverse impressions both evident though fine, the stria fine between them; fovee and latero- basal regions rather coarsely and sparsely punctate, the fovee shallow; elytra oblong, fully two-thirds longer than wide, twice as PLATYNIN 29 wide as the prothorax, the humeri rapidly rounded; tips rounded, the sinus long and shallow but distinct; striae moderate, smooth, grooved, the intervals flat, the punctures three in number; met- episterna very elongate; tarsi slender, the upper surface bisulcate. Length (2) 10.0mm.; width3.7 mm. Arizona (Huachuca Mts.),— RACH GLa ite hialaacinis Aateicsibis wis alshevalos eles edie aces longiceps Schf. Of the two examples of guerrerensis at hand, the second has the elytra slightly though evidently less elongate than in the type and with the lustre more cupreo-violaceous. The tarsi are densely hairy beneath, the fifth joint long, wholly nude, very slender basally and inflated distally; the claws are long. In longiceps, a specimen of which was sent to me for description by Mr. Schaeffer, the tarsi are feebly and very inconspicuously pubescent beneath. Group IV (sinuatus) Subgenus Anchomenus in sp. _ In deciding upon some type which may be known permanently as Anchomenus Bon., we encounter much uncertainty, for Dejean, Duval and others all seem to have different conceptions of what was really intended to be more essentially typical by Bonelli. In deciding upon some form which shall be truly representative of Anchomenus, | think we are warranted in taking some one of the species described under that name by Dejean, and sinuatus was there included. It seems possible, however, that in choosing sinuatus to play this part, we are approaching the true European Platynus Bon., as represented by complanatus, rather closely. Anchomenus as here understood has, however, a somewhat more convex form of body, as a rule, than might be inferred of the true Platynus. The outline is always somewhat ventricose, the antennze more or less long and slender, the third joint varying from decidedly shorter to evidently longer than the fourth. The prothorax is subcordiform, with well reflexed sides, sharp though not necessarily right basal angles, except in a very few cases such as stygicus Lec., and distinctly impressed fovez, and the elytra have rapidly rounding humeri, indicating well developed hind wings in all our species. So far as the described species are represented in my collection, the following scheme of arrangement might be proposed: Third antennal joint evidently longer than the fourth; body generally deep black, with deep strie and three dorsal punctures. [Section PSPrSTAPPMMON TS MULDEGTS Serre yat asa cts ees sc site ee ans ene eee eee 2 30 MEMOIRS ON THE COLEOPTERA Third joint subequal in length to the fourth to a little shorter. [Section PARANCHOMENUS) ‘mOVi]s5:<..0¢:. (esos. cree seer sict thers cucle estes eee 13 2—Prothorax transverse; surface only moderately convex. Black, the tibiz and tarsi piceo-rufous, shining, the elytra (Q) less polished; head elongate, three-fourths as wide as the prothorax, with large and remarkably prominent eyes, the anterior impressions parallel, rather long and distinct; palpi obscure rufous, the last joint longer than the third; antennz piceous, black at base, slender, two-fifths as long as the body, the third joint fully a third longer than the fourth; prothorax nearly a third wider than long, widest before the middle, the sides well reflexed, more broadly at base, subevenly rounded, becoming slightly oblique and straight basally to the angles, which are more than right but with the tips acutely promi- nent; base feebly oblique at the sides, equal in width to the rather deeply sinuate apex, the apical angles obtusely rounded; anterior impression deep, the posterior obsolete, the fovez broadly concave, slightly elongate; surface with numerous fine transverse ruguliform lines, finely and sparsely punctulate in the foveal region, the median stria distinct and subentire; elytra oblong, parallel, three-fourths longer than wide, not quite twice as wide as the prothorax, the basal and lateral cariniform lines uniting in a broadly, evenly rounded are at the humeri; sides scarcely arcuate; apical sinus deep and con- spicuous, the tips rounded and lobiform; strie rather coarse, nearly smooth; intervals only very slightly convex; tarsi strongly grooved externally. Length (2) 12.0 mm.; width 4.4 mm. Michigan (Marquette),—Sherman........................ inquisitor n. sp. Prothorax as long as wide or very nearly; upper surface strongly convex as a rule, the elytra subequally polished in both sexes and usually with very convex stnial intervals... <=). 2i «= esi) ieee 3 3—Species of the Lake Superior and Atlantic regions; elytral strie deep, SulGifOrIMS.. <) 2s siassiet w cto eevee severe mye co yee ced ee 4 Species occurring exclusively on the Pacific coast from northern sub- arctic regions to southern Mexico: 2.2 = 5s.) eins 7 4—Basal thoracic angles obtuse, with somewhat bluntly subprominent tips. Rather elongate, moderately convex, deep polished black throughout in both sexes; head well developed, slightly elongate, rhomboidal, with rather large and prominent eyes and short, deeply impressed, parallel anterior sulci; antenne piceous, the first three joints black, fully half as long as the body; prothorax a little wider in the female, the sides broadly, subevenly rounded and broadly reflexed, becoming gradually more oblique but scarcely at all sinu- ate behind; base and apex equal, both strongly beaded, the apex moderately sinuate and with rather blunt angles; anterior im- pression deep, angulate, the posterior feeble, the stria fine but im- pressed, not entire; fovez large, broadly concave and more or less punctate; elytra fully three-fourths longer than wide and three- fourths wider than the prothorax, the apex not abruptly obtuse and with broad and very distinct sinus; sides sharply reflexed, the ninth stria fine, much nearer the edge than to the eighth, the ocellate punctures large, irregularly spaced; strie very deep, evidently PLATYNINE 31 punctulate, the intervals very convex; second joint of the anterior male tarsi more than one-half longer than wide, gradually narrowed basally, the tarsi in part picescent. Length (o7 2) 11.0-14.0 mm.; width 4.2-5.0 mm. North Carolina (Southern Pines) and Arkansas. Five examples. [Feronia decentis Say; also An. gagates Dej., and ITA G bee Fare enter fadave les ote ord wien acista ie ahs levee ccs decens Say Basal thoracic angles sharp, rectangular or acute, more or less promi- SUBST y n.gtttd bee IN Rete ERIS Oca OO Gls SIAL ICG oe eke ot 5 5—Elytra more elongate, fully two-thirds longer than wide, feahly inflated behind the middle, the sides thence nearly straight to the rounded humeri. Body deep black and polished throughout, the tarsi black; head two-thirds as wide as the prothorax, barely elongate, the eyes rather large and prominent; anterior sulci par- allel, not very long; antenne nearly as in the preceding though barely half as long as the body; prothorax very slightly wider than long, widest before the middle, the sides rather strongly, evenly rounded and broadly reflexed, becoming sinuate and then parallel toward the basal angles, which are very sharp and somewhat everted; base strongly beaded, a little wider than the sinuate and finely, feebly beaded apex, the apical angles rather prominent and only narrowly blunt; surface with the transverse rugule very feeble, the impressions as in decens, the large fovee deeper and more closely, strongly punctate; reflexed margins very finely and feebly punctu- late throughout; elytra only one-half wider than the prothorax, the apex gradually ogival, with the oblique sinus long, very shallow and feeble; strie deep, feebly punctulate, shallower and more evidently punctate laterally, the deep ocellate punctures more widely separated medially; intervals notably convex; tarsi long and slender, grooved as usual externally. Length (2) 11.0 mm.; width 4.35 mm. Lake Superior (Marquette),—Sherman. oblongipennis n. sp. Elytra not more than one-half longer than wide in either sex and with MERE MEML Ve aT GUATE SIUES= kya, cutlalersisicleisieyals olar.t pelle vesces 6 6—Body larger, deep black and polished throughout in both sexes; head slightly elongate, not quite three-fourths as wide as the prothorax, with prominent eyes and parallel anterior sulci; palpi piceous-black, with pale tip; antennz nearly as in the preceding, a little more (o”) to slightly less (2 ) than half as long as the body; prothorax a little wider than long in both sexes, in outline nearly as in the preceding, except that the sides are more feebly sinuate and for a shorter distance basally, the angles rather abruptly and acutely prominent; surface smooth, the anterior impression always, the posterior some- times, distinct; large and deeply concave fovee punctate; broadly reflexed margins not distinctly punctulate; base and sinuate apex both beaded and subequal in width; elytra moderately convex, sometimes somewhat flattened above in the female, more rapidly obtuse at tip than in the preceding, the sinus very shallow; strie deep, finely punctate, the intervals strongly convex, subequally in the sexes; second anterior male tarsal joint almost twice as long as wide, obtriangular, gradually narrowed basally throughout its 32 MEMOIRS ON THE’ COLEOPTERA length. Length (o Q) 10.5-12.0 mm.; width 3.8-4.6 mm. New York, Pennsylvania, Indiana, Missouri, Iowa and Lake Superior (Bayfield and Duluth). Fifteen examples. [An. depressus Hald.]. sinuatus Dej. Body somewhat similar in form, coloration and lustre but much smaller and with more anteriorly inflated prothorax, the sides of which are more sinuate basally; head nearly similar but with still more prominent eyes; antenne similar in coloration but not quite so long, less than half as long as the body, the individual joints notably shorter; prothorax a little shorter than wide, as in stmuatus through- out, except that the sides are more inflated and more strongly rounded anteriorly, with the basal sinus longer and a little deeper, but with the sharp tips of the angles not quite so prominent; sides strongly reflexed, feebly punctulate, the large deep basal fovee distinctly punctate; apical angles somewhat more broadly and obtusely rounded; elytra subsimilar in general form, two-thirds wider than the prothorax, the apical sinus a little less shallow; strie not quite so deep but similarly punctate at the bottom; second joint of the anterior male tarsi of a very different outline, more oblong, with the sides more nearly parallel and much less than one-half longer* than wide; hind tarsi with the outer sulcus deep. Length (o7) 9.2-9.5 mm.; width 3.2-3.5 mm. Lake Superior (Bayfield) and Manitoba (Winnipeg),—Wickham.. .turbidus n. sp. Body still smaller in size, rather more ventricose, similarly deep black and polished, the legs black but pallescent toward the coxe; head fully three-fourths as wide as the prothorax, with moderate eyes, the frontal parts before them not much prolonged; impressions deep, dilated inwardly at the middle; palpi black, with pallid tip; antenne rather more than half as long as the body, black, the pubescence gray, the third joint much longer than the fourth; prothorax nearly as long as wide, much narrower than in the pre- ceding and not anteriorly inflated, parallel, the sides broadly and moderately arcuate, becoming gradually very feebly sinuate toward the angles, which are obtuse but with sharply defined and slightly prominent tips; margins strongly reflexed, only a little more so basally, the gutter punctulate to the apex, the punctures more wide- spread, coarser and conspicuous through the foveal region, the fovezee large, broadly impressed, with a very short linear incised part basally; impressions deep, especially the anterior, the stria broadly impressed, basally abbreviated; base even somewhat wider than the apex; elytra fully one-half longer than wide, three-fourths wider than the prothorax, oblong-oval, the sides rather arcuate, more rounded at base; subapical sinus rather long and feeble; striz moderately coarse, feebly impressed, the punctures along the bottom very fine but evident; intervals feebly convex, the three punctures moderate. Length (2) 9.2 mm.; width 3.4mm. Iowa (owas City) Wickham. senreeieeteiter eis eerie iowanus n. sp. 7—Pronotum with coarse, deep and very conspicuous transverse ruge. Body piceous-brown in color throughout, shining, the elytra (2) very feebly alutaceous; head elongate, two-thirds as wide as the PLATYNIN-E 33 prothorax, the eyes not very prominents front irregularly rugose; antenne slender, half as long as the body, pale brown, blackish basally, the second joint paler than the first or third; prothorax large, slightly wider than long, the sides evenly rounded and well reflexed, becoming gradually moderately sinuate toward the angles, which are obtuse but with bluntly prominent tips; base and apex beaded, the base broadly arcuate, more so laterally, somewhat wider than the moderately sinuate apex, the apical angles narrowly blunt; anterior impression distinct, the posterior obsolete; fovee large, concave, rugulose though not definitely punctate; elytra three- fifths longer than wide, two-thirds wider than the prothorax, the oblique apices broadly and moderately sinuate; striae nearly smooth, coarse, somewhat groove-like, the intervals virtually flat; met- episterna a third longer than wide; legs long; tarsi with numerous coarse fulvous hairs beneath, the fifth joint with a single fringe of coarse hairs beneath. Length (2) 11.0 mm.; width 4.5 mm. California (Redwood Creek, Humboldt Co.). A single example, PAI VAL UCM WINCEL xl shots Way dt inlenstald}ectsiwietene selec o's rugulifer n. sp. Pronotum smooth or very nearly so, without coarse ruge............ 8 8—Prothorax widest at about the middle of the length. Body stout, rather convex, highly polished and deep black throughout; head rather elongate, with moderately prominent eyes, scarcely over three-fifths as wide as the prothorax, the anterior impressions rather long, slightly oblique; antenne fusco-ferruginous, blacker basally, distinctly less than half as long as the body; prothorax slightly wider than long, the sides strongly rounded medially, oblique and less rounded thence anteriorly and, basally, becoming briefly sinuate near the basal angles, broadly reflexed; basal angles obtuse but sharply defined; beaded base transverse, arcuate later- ally, a little wider than the distinctly sinuate and beaded apex, the apical angles bluntly prominent; anterior impression evident, the stria fine, abbreviated; foveze elongate and moderately impressed, smooth; elytra rather short, scarcely one-half longer than wide, three-fourths wider than the prothorax, the sides evenly arcuate, scarcely at all more so at the humeri, the oblique sinus very feeble; strie deep, smooth, becoming shallower and subpunctate laterally; intervals strongly convex; met-episterna slightly longer than wide; hind wings probably curtailed; legs only moderate in length, the tarsi sulcate externally and with numerous short thick fulvous hairs. Length (Q) 11.0 mm.; width 4.4-4.6 mm. Mexico (Guer- ERE) ESAT OTT os) 2 Ser SE See Mie seis che de Sie 3.0% *consularis n. sp. Prothorax widest before the middle as usual................02--055- 9 9—Sides of the prothorax rapidly and very distinctly sinuate basally... 10 Sides gradually and at most very feebly sinuate basally............. II 10—Body deep black, polished and notably convex; head rather elongate- rhomboidal, three-fourths as wide as the prothorax, with rather prominent eyes, the anterior sulci short, parallel; antenne slender, fuscous, black basally; prothorax fully as long as wide if not longer, the sides broadly arcuate and widely reflexed, gradually arcuately T. L. Casey, Mem. Col. IX, Jan. 1920. 34 MEMOIRS ON THE COLEOPTERA converging behind the middle to the posterior sinus, the angles right and very sharp; surface with some feeble transverse rugule, the anterior impression deep, the posterior evident though feeble, stria deeply impressed, ending at the impressions; fovee deep, smooth, elongate, formed by the strongly reflexed sides and therefore not definitely limited; base transverse, only feebly oblique laterally, barely as wide as the moderately sinuate apex; elytra one-half longer than wide, very nearly twice as wide as the prothorax, the arcuate sides becoming barely more rounded toward the humeri; apex rather obtuse, the oblique sinus long and very feeble; strie deep, smooth, the intervals very convex; met-episterna distinctly elongate; tarsi black. Length (co) 10.5 mm.; width 4.2 mm. Washington State.t 2.5 ch as fee ee oe «eee maurus Mots. Body larger and stouter, similarly deep black and polished throughout in both sexes; head but slightly elongate and with rather broad neck, nearly three-fourths as wide as the prothorax, the eyes moder- ate in size and prominence; antennz slender, fusco-ferruginous, black basally, fully half as long as the body (oc) or a little less (2); prothorax as long as wide, the sides broadly and strongly reflexed, more rounded at a little before the middle, oblique posteriorly to the moderate basal sinus; basal angles obtuse but with acutely prominent tips; base as wide as the apex, becoming obliquely arcuate at the sides; apical angles prominent but bluntly rounded at tip; surface sometimes with a few faint rugule, the anterior impression not very deep, the posterior obsolete; fovee large, very deep, lineate at the bottom, smooth; elytra three-fifths longer than wide, rather inflated, with arcuate sides, becoming but little more rounded basally, the sinus oblique, long and distinct though not deep; striz deep, smooth, the intervals strongly convex; met- episterna one-half longer than wide; second joint of the male anterior tarsi one-half longer than wide, parallel, narrowing in basal half. Length (co? Q) 11.0-12.5 mm.; width 4.2-5.2 mm. California (San Francisco). Ten specimens, taken by the writer. ovipennis Mann. 11—Sides of the elytra feebly arcuate, more rapidly rounding at the humeri. Body rather depressed, black and polished, the legs and anterior parts slightly piceous; head elongate, with rather wide neck, two-thirds as wide as the prothorax, the anterior impressions narrow; eyes only very moderately prominent; palpi long, blackish, with pale tip; antenne long and slender; prothorax about as long as wide, the sides broadly rounded and widely reflexed, becoming oblique and straight basally to the prominent tips of the obtuse basal angles; base as wide as the apex, obliquely rounded at the sides; apical angles bluntly prominent; surface with some trans- verse rugule, the anterior impression very feeble, the posterior obsolete, the stria fine, attaining apex but not base; fovee smooth, very deep, extending to beyond the middle; elytra oblong, slightly over one-half longer than wide, three-fourths wider than the pro- thorax, the apex rather rapidly obtuse, with the sinus broad and shallow; striae smooth, deeply impressed, the intervals notably PLATYNIN4E 35 convex; ninth stria somewhat nearer the eighth than the margin; met-episterna one-half longer than wide; anterior male tarsi only very moderately dilated, as usual in this group, black. Length (c") 11.5 mm.; width 4.4 mm. California (Redwood Creek, Humboldt Til. 8 2 7 AGMIOe ed Att DOIBISIe Gre ROO ee tersus n. sp. Sides of the elytra more rounded but only very slightly more arcuate basally than medially; upper surface more convex............ 12 12—Form rather ventricose, polished in both sexes and of a dark piceous- brown color; head but slightly elongate, with broad neck, fully three-fourths as wide as the prothorax, the anterior impressions short and parallel; eyes moderate though rather prominent; an- tennz fully half as long as the body, slender, pale red-brown, the apices of the joints blackish, the basal joints blackish; prothorax as long as wide, sometimes a little longer, the sides moderately arcuate, well reflexed, gradually straight or just visibly sinuate posteriorly, the angles obtuse but with rather sharply prominent tips; base and apex equal, both strongly beaded; apical angles bluntly rounded at tip; surface with the transverse rugule very faint, the anterior impression deep, the posterior virtually obsolete, tthe smooth fovee deep, not extending quite to the middle; elytra oblong-ovoidal, shorter than usual, not quite one-half longer than wide and nearly twice as wide as the prothorax, widest somewhat behind the middle, the apex rapidly obtuse, the sinus long and shallow; striae smooth, sometimes feebly punctulate laterally, deeply impressed; intervals convex; met-episterna as usual in this section; legs long, the hind tarsi finely sulculate externally. Length (* @) 9.3-10.8 mm.; width 3.9-4.7 mm. Oregon (Clackamas Co.) and California (Arcata, Humboldt Co.). Sixteen specimens. arachnoides n. sp. Form less ventricose, convex, deep black, polished; head nearly as in the preceding but with somewhat longer neck; antenne shorter, not half as long as the body, the joints pale, with blackish apices but shorter than in arachnoides, the four basal joints black with pale tips; prothorax shorter, a little wider than long, the sides more inflated and rounded anteriorly, oblique basally to the broadly and obtusely prominent tips of the obtuse hind angles, resulting in a very small but definite sinus adjoining the tips; base scarcely as wide as the apex, obliquely arcuate at the sides, the prominent apical angles blunt at tip; surface, fovee and reflexed margins nearly as in arachnoides, but with the anterior impression feebler; elytra more elongate and more evenly oblong-oval, widest at the middle, fully one-half longer than wide, nearly four-fifths wider than the prothorax, the apex not so abruptly obtuse, the tips more narrowly rounded, the long oblique sinus very shallow; strie smooth, less deeply impressed, the intervals convex but rather less so than in the preceding; second anterior male tarsal joint ob- triangular, one-half longer than wide, narrowed from apex to base, smaller, narrower and less parallel than in arachnoides. Length (o*) 10.3 mm.; width 4.0 mm. California (Hydesville, Eel River MEMEO EIMMDOIE GOl}y ac cote ce tcc codec de cwsles ce similatus n. sp. 36 MEMOIRS ON THE COLEOPTERA Form still less ventricose, smaller in size and narrower, polished black, the elytra and femora just visibly picescent; head slightly elongate, rhomboidal, more than three-fourths as wide as the prothorax, the eyes moderate but prominent; antennz scarcely half as long as the body, slender, piceous-black, the third joint much longer than the fourth; prothorax not quite a fourth wider than long, the sides parallel, evenly and distinctly arcuate, becoming gradually just visibly sinuate basally, the angles slightly more than right, with well defined and sharply prominent tips; base as wide as the moder- ately sinuate apex, only just visibly oblique laterally; apical angles very blunt; margins broadly and strongly reflexed, especially toward base, and faintly diaphanous, the broad gutter more or less punctulate throughout; foveze large, concave, indefinitely limited and rugose, the outer wall formed by the reflexed edge; near the inner limit of the fovez and far before the base there is a small and abruptly very deep rounded impression; anterior impression angu- late, deep, the posterior feeble; elytra hardly one-half longer than wide, barely two-thirds wider than the prothorax, the sides gradually a little more rounded at base; subapical sinus long and very distinct; strie strong, deeply impressed, with fine but distinct punctures along the bottom; intervals strongly convex laterally and apically, rather less so elsewhere, the three punctures deep and distinct; tarsi slender, with deep lateral furrow. Length (2) 9.0 mm.; width 3.5mm. Idaho (Cceur d’Alene),—Wickham..... aleneanus n. sp. 13—Species moderately large, somewhat as in brunneomarginatus in POI OF SIZE... 3ye. sespevsns ye ahersh yatta ere aeons ee Ske eee 14 Species of small size and of the southern Mexican fauna, less than 7 mm. In TEN Sth. 4 : 5 Prothorax about as longvasiwidey. 2. - - 2-5. sla < 1s eae eee 6 5—Form rather stout, convex, shining, black, the anterior parts very feebly greenish; under surface black, the epipleura and legs pale, the femora feebly clouded distally; head elongate, three-fourths as wide as the prothorax, the eyes well developed but only feebly prominent; antennz black, with piceous basal joint and with the third scarcely as long as the fourth, long, slender, fully two-thirds as long as the body; prothorax a fifth wider than long, the sides evenly rounded and finely reflexed, more converging and reflexed basally, forming the outer wall of the fovee, which are deep, with a few small punctures, traceable anteriorly to the middle of the length; base not quite as wide as the feebly sinuate apex; basal angles obtuse, rounded at tip, the apical rather sharp; impressions feebly traceable, the stria entire; elytra oblong-oval, slightly less than one-half longer than wide, four-fifths wider than the prothorax, rather obtuse at tip, with feeble sinus; strie fine, grooved, a little coarser at tip, with very fine and close-set punctures, obsolete posteriad, the scutellar long, punctulate; intervals virtually flat, the third with four punctures; met-episterna one-half longer than PLATYNINAE 85 wide; anterior male tarsi very feebly dilated. Length (o 2) 6.7- 7.0 mm.; width 2.4-2.65 mm. Texas (Galveston). Three ex- amples, taken by the writer.................... maritimum n. sp. Form nearly similar, rather convex, shining, black, the anterior parts feebly greenish-black; legs obscure testaceous, the knees and tarsi blackish; head nearly as in the preceding, the deep anterior im- pressions flexed more finely outward behind; eyes nearly similar, scarcely prominent; antennz very slender, black throughout, two- thirds as long as the body, the third joint shorter and narrower than the fourth; prothorax fully a fourth wider than long, the sides strongly rounded, inflated, oblique and straighter basally, the fovez as in the preceding but less traceable anteriorly; base very distinctly narrower than the feebly sinuate apex; impressions sub- obsolete, the fine stria entire; elytra not quite one-half longer than wide, four-fifths wider than the prothorax, the arcuate sides simi- larly gradually more rounding basally; apex similar but with more distinct sinus; striz moderately fine, deep, grooved, finely punctu- late basally, impunctate behind; intervals not quite flat, the third with four, rarely five, punctures. Length (9) 6.8 mm.; width 2.6 mm. North Carolina (Southern Pines),—Manee. Georgia,—Le- MOST LCnepeE Meme earns aS Sich. ietaBe Slee ache We leh ROE decipiens Lec. 6—Upper surface bicolored, shining, the head and pronotum con- spicuously green, the elytra black, becoming green at the sides. Body smaller than in any other, only moderately convex, ventricose; under surface black, the legs pale throughout; head only slightly longer than wide, more than three-fourths as wide as the prothorax, the eyes large but only moderately convex; impression deep and coarse, finely oblique toward the eyes; palpi slender, black; an- tennz slender, two-thirds as long as the body, black, the first joint piceo-rufous, the third barely shorter than the fourth; prothorax very nearly as long as wide, the sides very evenly rounded, finely reflexed, more so at base, forming the outer wall of the fovez, which are large, deeply concave, slightly punctate and traceable for only a short distance anteriorly; base somewhat narrower than the feebly sinuate apex; basal angles obtuse and rounded, the apical sharply marked; surface nearly as in the preceding; elytra only two-fifths longer than wide, about twice as wide as the prothorax, the sides gradually more rounding at base; apex rapidly obtuse, with distinct sinus; striae only moderately fine, deep, grooved, coarser at tip, finely, closely punctate, obsoletely so behind, the scutellar moderate, punctate; intervals feebly convex to nearly flat, the third with four punctures; anterior male tarsi feebly dilated. Length (@ 2) 6.2-6.6 mm.; width 2.3-2.45 mm. Alabama (Fruitdale and Salco),—Léding................. semiviride n. sp. Upper surface shining, black throughout, the anterior parts or entire surface never more than just visibly and faintly viridate......... 7 7—Body stouter and rather strongly convex, the elytra very evenly elongate oval. Legs obscure rufous or blackish, the femora pale except apically; head elongate, narrower than the prothorax, the eyes large but not very prominent, the impressions as in the pre- 86 MEMOIRS ON THE COLEOPTERA ceding; antennz long, black throughout, fully three-fifths as long as the body, the third joint distinctly shorter and more slender than the fourth; prothorax very nearly as long as wide, the sides strongly rounded, converging and straighter toward apex and base, more reflexed at base along the fovez as in the preceding species; basal angles very obtuse, rounded, the apical sharp; base slightly nar- rower than the rather deeply sinuate apex; fovee very deep, with a few small punctures, not traceable quite as far as the middle of the length; impressions obsolete, the stria entire; elytra widest at the middle, the evenly arcuate sides rapidly rounding at base, three- fifths longer than wide, very nearly twice as wide as the prothorax; apex very gradually rounding, the sinus feeble; strie fine, grooved, slightly coarser at tip, very finely but distinctly, closely punctulate almost to the apex, the scutellar rather long, punctulate; intervals nearly flat, the third with four small punctures; met-episterna twice as long as wide; tarsi slender. Length (2) 7.2-7.5 mm.; width 2.7-2.85 mm. North Carolina (Southern Pines) and Alabama,— IE (yal baVers ain acd he ERO ee AA a5 o.orac-0 G20/2 ovalipenne n. sp. Body more slender, only moderately convex, the elytra less oval and raatoyn 10} 0) (0) ge ee ee OO EDO CCUG OGac Counce 8 8—Form elongate, shining, deep black, the anterior parts obscurely viridate; legs pale, with dark knees and nearly black tarsi; head slightly elongate, nearly four-fifths as wide as the prothorax, the eyes large and rather more prominent than in the preceding species, the impressions similar; antenne very slender, black, with slightly less dark basal joint, nearly three-fourths as long as the body; prothorax small, about as long as wide, with evenly rounded and finely reflexed sides, more converging basally, where as usual they are more reflexed along the deep and feebly punctulate fovee, which are traceable almost to the middle; base distinctly narrower than the feebly sinuate apex; surface nearly as in the preceding species, the stria entire, unusually impressed; elytra nearly three- fifths longer than wide, almost twice as wide as the prothorax, very gradually narrowing behind, the sinus oblique but almost obsolete; sides rather rapidly rounding at base; striz rather fine, grooved but also unusually impressed, finely punctulate except posteriad; in- tervals slightly convex, the third with four to five punctures; met- episterna nearly twice as long as wide; anterior male tarsi narrowly dilated. Length (o’ 2) 6.3-6.8 mm.; width 2.18-2.3 mm. North Carolina (Southern Pines),—Manee...............-- pinorum n. sp. Form somewhat similar but less elongate, nearly similar in coloration and lustre but with entirely pale legs; head, eyes and antenne nearly similar, the first antennal joint piceo-rufous; prothorax almost similar throughout, but a little wider, the foveal region less punctulate, the fovez deep, easily traceable to the middle of the length; transverse impressions more evident, the stria finer and less impressed and not entire but ending anteriorly at the anterior impression; elytra only one-half longer than wide, four-fifths wider than the prothorax, gradually rounded but somewhat more obtuse behind, the humeri still more rapidly rounded; striz finer, not so PLATYNIN-E 87 deep though abrupt and with the minute punctulation so feeble as to be scarcely traceable; intervals perfectly flat, the third with four punctures; met-episterna similarly long; anterior male tarsi slender, only just visibly dilated. Length (o') 7.0 mm.; width 2.35 mm. Texas (Galveston). A single example, taken by the SER PUN erp med et eT ice laintlAnapeie,', Ssajdaucisfesenti dove dosier pies houstoni n. sp. 9—Head short, not longer than wide. Body rather small, only moder- ately convex, black, shining, the anterior parts very feebly eneo- viridate, the elytra rather bright subcupreous; legs pale, the knees and extreme tips of the tarsal joints feebly infumate; head three- fourths as wide as the prothorax, with rather large and prominent eyes, the impréssions parallel; palpi slender, piceous; antenne very slender, black, the first three joints piceous, with the third shorter than the fourth, filiform, two-thirds as long as the body; prothorax a fourth wider than long, widest near the middle, the sides subevenly and rather strongly arcuate and finely reflexed, more so at base, forming part of the large, deep and finely punctulate fovez, which are scarcely traceable anteriorly; basal angles very obtuse and rounded, the base fully as wide as the feebly sinuate apex; surface with evident transverse rugulz, the impressions fine and feeble, the fine stria subentire; elytra oblong, broadly rounded from slightly behind the middle, the sinus scarcely more than straight; sides rapidly rounded at base; striz fine but deep, grooved, the punctures smaller than in the two following and obsolete in about apical half, the scutellar deep, rather long; intervals virtually flat; met-episterna nearly twice as long as wide; anterior male tarsi feebly though evidently dilated. Length (co) 6.6 mm.; width 2.4mm. Mississippi (Vicksburg).......... breviceps n. sp. Head distinctly longer than wide, subtriangular.................... 10 10—Upper surface more convex, the size larger, the strie rather more impressed; sides of the elytra more arcuate; very shining, black, with very feeble viridate lustre—scarcely observable on the elytra; legs colored somewhat as in the preceding; head rather more than three-fourths as wide as the prothorax, with rather large and moder- ately prominent eyes, the impressions outwardly oblique behind; palpi piceous, antenne colored as in the preceding, very slender, three-fifths as long as the body, the third joint evidently shorter than the fourth; prothorax a fifth wider than long, in the outline, margins and foveze almost as in breviceps, but with the anterior impression subobsolete, the stria not extending to the apex, the base relatively narrower, not quite as wide as the apex, the fovee more punctate and traceable to the middle of the length; elytra oblong, rather more obtusely rounded at apex, with feeble though more evident sinus and rather more arcuate sides, which are simi- larly finely reflexed and rapidly rounded at base; strie well im- pressed, rather strongly but not very closely punctate, the punctures becoming obsolete in about apical third; fifth stria feebly indented near apical fifth; intervals rather convex, less so posteriad; met- 88 MEMOIRS ON THE COLEOPTERA episterna nearly twice as long as wide; tarsi very slender. Length (2) 7.6 mm.; width 3.0 mm. Indiana. Levette collection. luculentum n. sp. Upper surface less convex; strie feebly impressed, the sides of the elytra parallel, finely reflexed and but feebly arcuate, similarly rapidly rounded at base; black, the anterior parts obscurely viridate, the elytra black or very slightly zneous, polished; legs obscure rufous, the femora brighter and more flavate, infumate at the knees; head nearly as in the preceding, the eyes large and rather prominent; palpi paler basally than distally; antenne similar, three-fifths as long as the body, the third joint shorter than the fourth; prothorax a fourth wider than long, the sides strongly, subevenly arcuate and finely reflexed, a little more so at the very large and deep, finely punctulate foveze, which are traceable not quite to the middle; angles broadly rounded; base usually somewhat narrower than the apex, though sometimes fully as wide, irrespective of sex; elytra rather gradually rounding behind, with very feeble sinus, one-half longer than wide, four-fifths wider than the prothorax, these pro- portions nearly as in the preceding species but more elongate than in breviceps; strie fine, grooved, the punctures distinct and well separated but not large, crenulating the intervals, obsolete in about apical third; fifth stria similarly very feebly indented near apical fifth; anterior male tarsi very feebly dilated. Length (o 2) 6.5- 7.2 mm.; width 2.35-2.6 mm. Alabama (Calvert, Mt. Vernon and Mobile),—Léding; Texas (Galveston). [Pl. crenulatus Lec.,— Georeials .. neater. ccs Gone ere rere CE ee eS striatopunctatum Dej. The single female from Alabama placed with the female type of ovalipenne, from North Carolina, seems to agree very well, though having the convex oval elytra a trifle less elongate. In this and others of that section, the feeble subapical indentation of the fifth stria, noticeable in the striatopunctatum section, is completely obsolete, as it is also in nutans; this indentation is homologous with the larger feeble dent observable in some other species, as in Anchomenus ctnciicollis and Pseudanchus excavatus; in Circinalia eruginosa and undulata, it lies at the middle of the elytra. The species of Micragonum are often rather closely allied, but can be distinguished readily among themselves on actual comparison. Group IlI—picticorne Subgenus Tetraleucus nov. It seems necessary to propose a separate subgeneric name for one of the most remarkable Platynids known from our fauna, described many years ago under the specific name picticornis by PLATYNIN-E 89 Newman. In the general structure of the body it agrees very well with the other species of Micragonum, except that the sides of the prothorax and elytra ‘are less finely reflexed and diaphanously pale; secondly in having the elytra rather shining in the male but opaculate in the female; lastly, in the remarkable coloration of the antenna, the first three joints and basal node of the fourth rufous, thence black to the apex of the seventh joint, the last four joints being very abruptly of a creamy white. The male seems to be rather less abundant than the female. Other points relating to this species are recorded in the following description: Body oblong-suboval, moderately convex, shining, the elytra (co) faintly alutaceous or (9) almost opaque; color black, excepting the fine pale side margins, the elytra dark coppery-brown; under surface black, the legs pale, especially the femora; head but slightly elon- gate, rather more than two-thirds as wide as the prothorax, with well developed and very prominent eyes; impressions very short, unusually feeble; palpi pale, slender, of the usual structure; an- tenne very slender, fully two-thirds as long as the body, the third joint distinctly shorter than the fourth (co), or subequal (@); prothorax relatively larger than in any of the preceding species, fully a fourth wider than long, the sides subevenly rounded through- out, distinctly and abruptly but not broadly reflexed, more oblique but not more reflexed basally, the angles broadly rounded; base narrower than the rather deeply sinuate apex, the apical angles blunt; impressions almost completely obsolete, the stria fine, entire; foveee large, deeply concave, nearly smooth, not much prolonged; elytra oblong, parallel, hardly one-half longer than wide, rapidly ‘rather obtuse at apex, with long and shallow though distinct sinus, three-fourths wider than the prothorax, the feebly arcuate sides rapidly rounding at base; strie very fine, impunctate, distinctly impressed (o’), less so (Q); intervals feebly convex, the dorsal punctures small, four in number, the anterior two near the third, the other two near the second, stria; scutellar stria fine, the ninth very fine, half as far from the edge as from the eighth; met-episterna fully twice as long as wide; tarsi long and very slender, the lateral groove very fine, the anterior of the male feebly dilated. Length (10°, 72) 7.3-7.8 mm.; width 3.0-3.2 mm. Alabama (Mt. Vernon and Salco),—Léding. Not rare in certain localities. picticorne Newm. LeConte (Bull. Bk., 1879, p. 49) gives albicrus Dej., as a species also having four abruptly pale outer antennal joints, but there the femora are dark in color and the dorsal elytral punctures are said to be three; in picticorne the dorsal punctures are four in number, not five as stated by LeConte. These punctures are said also to 90 MEMOIRS ON THE COLEOPTERA be four in albicrus by Dejean, who also states that the body is black, shining, the elytra duller, the prothorax subcordate and the elytral striz obsoletely punctate. In describing albicrus, Dejean does not mention the antennz at all, they probably having been lost in his specimen, and what LeConte’s albicrus, with three dorsal punctures, may be, I cannot tell at present. Just why Dejean should have named his species albicrus, when the legs are obscure yellowish with blackish femora, is also rather inexplicable. It would be most interesting to know the environmental circum- stances, or the life habits, that should have evolved the peculiar coloration of the antennz seen in picticorne. The small Lebiid Eucerus varicornis, also has antennz somewhat of this nature, but there it is the five outer joints that are abruptly white. Elliptoleus Bates Under this generic name Mr. Bates described a few species from southern Mexico, of small size and peculiar appearance. The antenne are slender, with the third and fourth joints equal, the palpi normal, the pronotum nearly flat, very finely margined and with the foveze reduced to barely observable impressions, which are slightly elongate and distant from the side margin. The elytra are evenly oval, the sides not more arcuate basally, the hind wings apparently wanting; they are deeply sinuate at base, and the angle made by the basal ‘margin and sides is promirfent and acute. The met-episterna are short. A specimen of the type species, named vixstriatus by Bates, and taken in the Federal District, is the only representative in my collection. It is very small in size, highly polished throughout and piceous, the elytral strie extremely fine and feeble; there are three dorsal punctures on the left elytron of this specimen and four on the right. The basal thoracic angles are broadly rounded and the elytra at the middle are one-half wider than the prothorax; its dimensions are 5.5 by 2.3 mm. In general habitus it is not unlike Europhilus, but the antennal pubescence does not begin on the third joint. Platynomicrus n. gen. In this genus the body is very small and narrow, the head rhom- boidal and very nearly as wide as the prothorax, which is parallel, PLATYNIN-E QI with truncate apex. The mentum tooth is well developed and triangular, the palpi only moderate in length, the second joint but little thicker than the others and the fourth longer than the third. The antenne are very slender and filiform, with the third and fourth joints equal. The prothorax is extremely finely margined but not reflexed at the sides, and the fovee are narrow and very feeble; they are distant from the sides as in Elliptoleus. The narrow elytra have the humeri rapidly rounded, the hind wings being well developed, and the striation is extremely feeble—also as in Elliptoleus. The prosternum is unusually long before the cox, the met-episterna relatively narrower than in any other generic group, and the coloration of the body is peculiar. The anterior tarsi of the male are extremely feebly dilated. The very slender hind tarsi have the lateral grooves feeble; the claws-are small and unusually arcuate and thick. Our two species are the following: Body slender, moderately convex, smooth, with extremely minute and feeble micro-reticulation, rather shining, flavate, the head black, the pronotum broadly blackish along the middle, the elytral suture also clouded except apically; under surface and legs flavate, the abdomen black except at apex; head evidently though only slightly narrower than the prothorax, with well developed and somewhat prominent eyes, the anterior impressions very small, short and feeble; antennz blackish, with the first three joints pale, scarcely half as long as the body; prothorax very slightly longer than wide, widest at the middle, the sides there more rounded, oblique and less so anteriad and posteriad, feebly subsinuate for a short distance near the rounded basal angles; base as wide as the rectilinearly truncate apex, arcuate laterally; anterior impression angulate and evident, the posterior nearly obsolete, the stria rather strongly impressed and conspicuous, extending only between the impressions; surface smooth, with some feeble transverse lines toward the stria; elytra four-fifths longer than wide, three-fourths wider than the prothorax, parallel, rounded at apex, without distinct sinus; striz very fine, feebly impressed, finely subpunctulate; dorsal punctures three. Length (07) 5.5 mm.; width 1.45 mm. Lake Superior to British Columbia. The described specimen from the latter region. nigriceps Lec. Body still more slender and smaller, similar in coloration and ‘lustre; head narrower but as wide as the prothorax, the eyes not quite so large but more prominent, the impressions longer but finer; antenne similar but longer, three-fifths as long as the body; prothorax nar- rower and more elongate, almost a fourth longer than wide, the parallel sides more feebly and subevenly arcuate, simply a little 92 MEMOIRS ON THE COLEOPTERA straighter basally, the angles more broadly rounded; base a little narrower, scarcely as wide as the apex; surface, impressions and fovee nearly similar; elytra narrower, less parallel, very faintly inflated posteriorly, twice as long as wide and twice as wide as the prothorax, similar at apex; striz still finer, excessively faint and discernible only under very close observation, not at all punctulate. Length (o) 5.0 mm.; width 1.35 mm. Canada (Toronto),— Witckhanrinerns teen ef tic crn ce eke tiie, cubes sie lett cm eerie fragilissimus n. sp. In both these species the sutural stria is more impressed and more distinct than the others. The dimensions of nigriceps, as given by LeConte, 6.2 by 2.5 mm., are so different from the reality, as observed in my British Columbia specimen, that, in conjunction with the statement that the thoracic median stria is “‘tenuissima,”’ it may possibly be something not quite the same specifically; if LeConte did not habitually overstate the dimensions of the smaller species, we might consider these circumstances more seriously. The length is reduced to 5 mm. in the “ Brooklyn Bulletin.” Sericoda Kirby In founding this genus upon a very remarkable species with dense silky surface lustre and pronounced sculpture, Kirby laid principal stress upon what he conceived to be a small retractile segment at the apex of the fourth palpal joint, which was probably a small particle of foreign matter, as there is no trace of this feature in my specimens. It is advisable to preserve the genus, however, because of the habital peculiarities, which are pronounced, although only a moderate proportion of the species have the dense and opaquely sericeous elytral lustre. There is considerable diversity in the form of the thoracic angles, besides the variety of sculpture and lustre, for, though the basal angles are very obtuse in all, the tips are strongly marked or rather sharp in some and rounded or obliterated in others, such as the Californian variolata of LeConte. In the variolata and quadripunctata sections, the four or five dorsal punctures of the elytra are notably large and conspicuous, and they are very distinct though less impressed in the opaculate bembidioides section, while in the obsoleta group they become minute, very inconspicuous and only three in number, the distance between the two anterior very much greater than that separating the two posterior. I have been unable to identify the species described PLATYNIN4E 93 by LeConte under the name consimilis, afterward changed to vicina by Gemminger and Harold; the original description states that it is materially larger than obdsoleta, being 8 mm. in length; in the Brooklyn Bulletin this length was however subsequently reduced to 7 mm., which is probably nearer the truth; it is said to differ from obsoleta in having the elytra more truncate at tip and with deeper strize; the type was found on Michipicoton Island, Lake Superior. Harpalus bogemanni Gyll., is a European species and I doubt its occurrence on this continent; in the latest European catalogue, however, obsoleta Say, is said to be a synonym of Agonum bogemanni, without doubt incorrectly, as we have a number of allied though apparently distinct species. Our species are moderately numerous and, so far as known to me, are as follows: Elytra densely opaque, with mottled and sericeous lustre; dorsal punc- tures about five, sometimes four, small and submuricate; pronotum with fine dense strigilate sculpture, the basal angles well defined; thoracic foveze before the middle near lateral fourth always evi- Rasseh PEE ee oso roar aa ts 88) ay sy6 6 ae havo aye are ake ae = es as 2 Elytra not opaque, always strongly shining; pronotum sometimes with feeble and not dense transverse rugule, but never with the close confused sculpture of the preceding section..................... 4 2—Elytra notably elongate, fully one-half longer than wide, the sutural tips subangulate and narrow; color deep black above and beneath, the under surface strongly shining, the legs and palpi black; head fully as wide as long, fully four-fifths as wide as the prothorax, with very prominent eyes; surface partially strigilate but smooth at the middle; antenne very slender, black throughout, barely half as long as the body; prothorax one-half wider than long, widest and at the sides subprominently rounded before the middle, the sides thence less arcuate before and behind, becoming gradually somewhat sinuate before the obtuse but rather sharp angles, finely reflexed, more so at base, the latter barely as wide as the feebly sinuate apex, strongly oblique outside the peduncle of the hind body; anterior impression feeble but evident, the stria not quite entire, deep and distinct; foveze having the form of large and feeble in- definite depressions of the surface; elytra perfectly parallel, with very feebly arcuate sides, rapidly rounding at base, rapidly somewhat obtuse at apex, with distinct sinus; strie fine, feebly impressed, feebly and not closely punctulate; intervals not quite flat, seri- ceously and unevenly opaque; dorsal punctures small but lying within rather large and feeble depressions; anterior male tarsi very feebly dilated. Length (o7) 5.8-6.5 mm.; width 2.1-2.3 mm. British Columbia (Terrace, 100 miles up the Skeena River),— Keen. [Ag. cicatricosum Mots.].............. bembidioides Kirby Elytra much less elongate, always less than one-half longer than wide, Persuturalntips Droadly roundedas.carcneeccs cesses cesses cases 3 94 MEMOIRS ON THE COLEOPTERA 3—Sides of the prothorax oblique but straight basally; body similarly rather depressed and deep black throughout; head large, fully as wide as long, with the eyes large but only moderately convex, very much less prominent than in the preceding, fully four-fifths as wide as the prothorax; surface in great part smooth and shining, strigilate anteriorly; antennz very slender, the third joint a little longer than the fourth as usual in this genus; prothorax nearly one-half wider than long, the sides as in bembidioides, except that the promi- nence before the middle is much less pronounced; angles obtuse and distinct but not at all prominent, the seta similarly on the edge at the angle; base fully as wide as the apex, laterally less oblique than in the preceding, the surface smoother, the fine close strigilation rather less pronounced; anterior discal fovez deep, the impressions and fovez nearly similar; elytra not quite one-half longer than wide, one-half wider than the prothorax, in outline nearly similar, though much less elongate and with the apex less abruptly obtuse, with the sinus shorter and much feebler; surface sculpture and lustre nearly similar, the basal margin in like manner rather deeply sinuate, joining the side margin in an even curve; tarsi very slender. Length (2) 6.0 mm.; width 2.2mm. Colorado.......... monticola n. sp. Sides of the prothorax oblique basally and becoming distinctly sinuate toward the angles, which are sharp, subprominent and more nearly right; coloration, lustre and sculpture nearly similar; head in form, size and in the only very moderately prominent eyes, as in monticola, but having the entire surface strigilate, the lines radi- ating from a short incised medio-frontal line; palpi with the fourth joint more conspicuously longer than the third; antenne slender but rather more incrassate distally than in bembidioides, half as long as the body to a little less; prothorax shorter, two-thirds wider than long, nearly similar in general outline, the finely reflexed sides much less reflexed at base than in that species, the base similarly unmargined, fully as wide as the apex and arcuately oblique at the sides; impressions almost obsolete, the stria fine; fovee similarly indefinite and shallow, the anterior discal fovez smaller; surface flatter, the confused strigilation stronger and more evident; elytra nearly similar but less strongly mottled with velvety black, the general lustre less znescent, the apex more abruptly obtuse, with the sinus much deeper and more conspicuous, although the sutural tips are similarly rounded and not in the least subangulate, as they are in bembidioides. Length (@ 9) 5.6-6.2 mm.; width 2.1-2.3 mm. Mexico (Colonia Garcia, Sierra Madre Mts., Chihuahua),— Townsend... oe ee em ete ies cise oe am aheie *colonica n. sp. 4—Dorsal punctures of the elytra four to six in number.............. 5 Dorsal punctures very minute and only three in number............. 7 5—Prothorax in outline nearly as in the preceding section, the basal angles obtuse but distinct and sharply defined. Body smaller, deep black and shining above and beneath, the legs, palpi and antenne black, the upper surface with extremely feeble subzneous lustre; pronotum opaque laterally; head smaller, fully as wide as long, at least three-fourths as wide as the prothorax, smooth, the PLATYNINE 95 anterior impressions very small; eyes well developed but only moderately prominent; antenne slender, about half as long as the body; prothorax fully one-half wider than long, the sides. sub- evenly rounded and finely reflexed, a little straighter and more reflexed basally; base as wide as the moderately sinuate apex, obliquely rounded at the sides, not margined; surface feebly convex, shining, opaque laterally, the sculpture very fine; anterior im- pression evident medially, the stria rather deep and impressed; foveze as in the preceding section, large, feebly and indefinitely depressed; elytra one-half longer than wide, nearly three-fifths wider than the prothorax, parallel, with slightly arcuate sides, rapidly rounding at base; apex rather abruptly obtuse, with moder- ately oblique and rather long but very shallow sinus and rounded sutural tips; strie fine, slightly impressed, somewhat irregular laterally; intervals equal, slightly convex; dorsal punctures very large, deeply concave and conspicuous, four in number, somewhat irregularly spaced. Length (co 2) 4.3-5.0 mm.; width 1.5-1.85 mm. Michigan (Marquette), Idaho, Washington State and British Columbia (Skeena River). Rather abundant. [PI. stigmosus Lec.; RPA TSM LATEIIE My. te ete yeAe dic cistern Saud Sieecow Sides he axe quadripunctata Dej. Prothorax more parallel, with obsolete and broadly rounded basal angles though, similarly, having the posterior marginal puncture on the edge and marking the position of the angle; body of paler coloration than elsewhere in the genus and inhabiting the more southern PEELE QUEUE Tefeu (OSs Senecio CU cna Sece en eRe icy coe eee a 6 6—Form oblong-oval, moderately convex, shining, black, the anterior parts with*feeble zneous lustre, the elytra and epipleura ochreous- brown, the former paler toward the sides, the legs pale, with black tarsi; head barely visibly longer than wide, distinctly narrower than the prothorax, with well developed but only very moderately prominent eyes, the anterior impressions rather short and feeble; antenne not very slender, half as long as the body, piceous, the first joint paler, the third and fourth equal; prothorax two-fifths wider than long, parallel, the sides subevenly and moderately arcu- ate and finely reflexed, thicker about the basal angles; base arcuate, scarcely as wide as the feebly sinuate apex having rather blunt angles; surface polished and smooth, having some feeble transverse ruguliform lines, the large and feebly concave fovee rather more opaculate; impressions barely traceable, the stria very fine, not entire; elytra oblong-suboval, one-half longer than wide, four-fifths wider than the prothorax, the sides moderately arcuate, gradually more strongly so at base, the sinuate basal margin making a some- what blunt advanced angle with the side margin; apex gradually rounded, the sinus short and very feeble; striae extremely fine, smooth, the intervals perfectly flat, the third with six rather coarse impressed foveiform punctures, not however quite so large as in the preceding species; met-episterna about twice as long as wide; tarsi very slender. Length (o’ 2) 5.8-6.2 mm.; width 2.0-2.25 mm. California (Monterey to Humboldt Co.). Rather abundant. [Puce muialumeNUOtSs|eew ls, oe a )eis sss fae oe oie viele ee oe os variolata Lec. 96 . MEMorIrRS ON THE COLEOPTERA A—General characters, color, lustre and sculpture as in variolata, but with the elytra notably shorter and more oval, the sides more arcuate; sides of the prothorax usually somewhat less arcuate, the apical angles still blunter, the basal rather less broadly rounded. Length (o' 9) 5.6-5.8 mm.; width 2.15-2.25 mm. California (San Diego),—Ricksecker........ coronadina n. subsp. Form oblong-suboval and moderately convex, larger and stouter than vartolata, shining, black, with the faintest subzeneous lustre anteri- orly, the elytra piceous, with paler sides; legs rufo-piceous; head as in the preceding, though a trifle larger and more elongate; antennz much longer, black, with piceo-rufous first joint, four-sevenths as long as the body; fourth palpal joint still more elongate, one-half longer than the third; prothorax nearly one-half wider than long, the perfectly parallel sides evenly and less strongly arcuate from apex to base, the basal angles very obtuse but not so rounded as in the preceding; surface and margins nearly similar; elytra one- half longer than wide, only one-half wider than the prothorax, the sides as in variolata and similarly very finely reflexed, but with the apex rather more rapidly rounded and obtuse, the sinus longer though feeble; striae very fine, the intervals not quite so flat, the six punctures of the third much smaller and less conspicuous; epipleura flavate, the rest of the under surface deep black; tarsi very slender. Length (2) 6.5 mm.; width 2.45 mm. California (Siskiyou Co.),—Koebele......................- shastanica n. sp. 7—Sinuate basal margin of the elytra forming an obtuse, rather blunt but anteriorly projecting angle with the side margin; elytral inter- vals not, or only feebly or irregularly, alternating in width.......8 Sinuate margin joining the sides in a broad and even curve........... 9 8—Form moderately stout, slightly convex, highly polished throughout and black, with the feeblest piceous tinge; under surface piceous, the legs dark rufous; head about four-fifths as wide as the pro- thorax, slightly elongate, with large and somewhat prominent eyes, the anterior impressions very small and feeble; last palpal joint but slightly longer than the third; antennz piceous-black, with only slightly paler basal joint, rather stout, becoming more slender toward the first joint, barely half as long as the body, the third joint much longer than the fourth, the fifth two and one-half times as long as wide; prothorax one-half wider than long to a little less, widest well before the middle, the sides rather strongly rounded, less so and distinctly oblique posteriorly, finely reflexed, more so basally, the angles very obtuse and blunt; base broadly, obliquely rounded from seta to seta, as wide as the apex, which is feebly sinuate and with rounded angles; transverse impressions obsolete; anterior discal fovezee wholly wanting, the stria fine; fovee large, irregular and very shallow, smooth; elytra oblong and parallel, with feebly arcuate sides, gradually more rounding basally, nearly three-fifths longer than wide, four-fifths wider than the prothorax, rather rapidly rounded at apex, with the sinus subobsolete or barely traceable; striz fine, smooth, impressed; intervals sub- equal, feebly convex; met-episterna more than twice as long as PLATYNIN-E 97 wide; tarsi slender, the anterior (o") very feebly dilated. Length (o 2) 5.0-7.0 mm.; width 1.8-2.35 mm. Rhode Island to Lake Superior (Duluth) and southward to North Carolina (Southern Pines). Very abundant. [Ag. luctuosum Dej.; placidum Lec. nec. SINT mr SIPeEICOUE® IMiamins ((f)i)\vershenas cletts.cis)ele « sisie oe e's ele obsoleta Say Form slightly narrower and more elongate, dark piceous, the head black; under surface and legs piceo-rufous, highly polished; head nearly similar, the eyes rather less prominent; antenne longer and more slender, black, the first joint piceo-rufous, the third joint subequal to the fourth, the fifth three times as long as wide; last palpal joint barely longer than the third; prothorax nearly similar but shorter, the sides and surface similar, except that the fine trans- verse rugulz are more evident and the anterior impression distinct; basal angles obtuse though well defined; elytra two-thirds longer than wide, only three-fifths wider than the prothorax, similar in general outline and striation; anterior male tarsi feebly dilated. Length (o’) 5.75 mm.; width 2.2 mm. Vancouver Island (Vic- Me aTED) se WGI TIN ro: wns he 5 wae ete e even ee eee oo he wie eee insulina n. sp. 9—Body a little larger and stouter than in obsoleta, feebly convex, shining, black, the under surface and legs piceous-black; head evidently narrower than the prothorax, with rather prominent eyes and small anterior impressions; palpi somewhat stouter, the last joint longer than the third; antennz heavy, distinctly less than half as long as the body, piceous-black, the basal joint scarcely paler, the third much longer than the fourth; prothorax shorter, more than one-half wider than long, widest slightly before the middle but with the sides moderately and evenly rounded, feebly so and only slightly sinuate behind, distinctly reflexed, rather broadly at base, the angles extremely obtuse though evident; base broadly obliquely rounded laterally, as wide as the apex, which is very feebly sinuate, with rather broadly rounded angles; surface with two large and deeply impressed discal fovee before the middle, having also numerous distinct transverse rugule; anterior trans- verse impression distinct, the stria fine; fovez large, shallow, not definitely limited and more ruguloso-opaculate; elytra one-half (oc) to two-fifths (2) longer than wide, evidently less than twice as wide as the prothorax, oblong, with nearly straight sides, rapidly rounding at base; apex rapidly much more obtuse than in obsoleta, the sinus longer and distinctly deeper, distinct; strie very fine, impressed, smooth; intervals distinctly alternating in width, convex, the narrower ones more strongly; anterior male tarsi narrowly dilated. Length (o1 2) 6.4-7.0 mm.; width 2.45-2.75 mm. Colorado. Two examples, from the Levette collection and without THEtCHeG LECOrd) Of Jocalitys.<. Wow ces We clea s cee wees invidiosa n. sp. Body rather stout, piceous-black, highly polished and very moderately convex; under surface rufo-piceous, the legs almost deep black; head slightly elongate, nearly as in the preceding, except that the eyes are more prominent and the neck more narrowly constricted, being barely more than half as wide as the prothorax; antenne T. L. Casey, Mem. Col. IX, Jan. 1920. 98 MEMOIRS ON THE COLEOPTERA almost similar; prothorax not so short, less than one-half wider than long, the sides, general surface and proportion of the parts nearly similar, except that the transverse rugule are feebler, the fovee shining and smoother and the discal fovez before the middle completely wanting; anterior transverse impression distinct; elytra oblong but not quite so broad, one-half longer than wide (9), the apex even more abruptly and broadly obtuse, with the long sinus similarly distinct; striz very fine and more feebly impressed, the intervals mutually equal in width and more feebly convex; met- episterna two and one-half times as long as wide. Length (2) 7.2 mm.; width 2.6 mm. Washington State. One specimen, without more definite record of locality............. tacome n. sp. There is an evident bond of affinity uniting all the above species, although this was apparently not suspected by LeConte in the case of variolata. The singular ante-median discal fovez of the pronotum are constantly present in the bembidioides section, occa- sionally appear as a mere minute trace in the variolata group and are well developed in invidiosa but wholly wanting in the related tacome; in the latter the strial intervals do not alternate in width and prominence as they do in zmvidiosa and, as stated by Dejean, in the European bogemanni Gyll. It is singular that in a genus so uniform in general structural characters, outline of the prothorax and in other ways, there should be such diversity in the sculpture and lustre of the elytra as observable in bembidioides, quadripunctata, variolata and obsoleta, or such violent contrast as in the six large foveiform punctures of variolata and the three very fine punctures of obsoleta, where they often become subobsolete.* Agonum Bon. This genus is difficult to define in accurate terms and is based principally upon a specialization of habitus, due to the broader and more parallel form of the body, relatively wider and more trans- versely oval prothorax and the marked prevalence, in one of its largest sections, of bright metallic coloration, almost unknown in Anchomenus, at any rate as the latter occurs in North America. * Obsoleta occurred during August of a summer which I spent at Bluff Point, near Plattsburg, Lake Champlain, in very great profusion. On one occasion while sitting reading quietly, I felt a mild prick above my foot, and on investigating found that one of these little beetles had bitten me through my stocking, evincing most remarkable enterprise for such a diminutive animal and especially one having so short a head. PLATYNIN-E 99 There are, however, exceptions as might be expected, the prothorax in atromicans, for instance, being noticeably subcordiform, though with broadly rounded or subobsolete basal angles, but in all such cases the relative widths of the prothorax and elytra are the deter- - mining factor, and it is but seldom that a species cannot be assigned satisfactorily to either Anchomenus or Agonum. So in my opinion all the genera of Bonelli are worthy of continuance, at least from the important standpoint of general habitus, and, for taxonomic reasons, it is better so, because to unite all these elements would give us a supergeneric aggregate, so large and heterogeneous as to hamper rather than aid the process of naming what may ultimately prove to be thousands of specific forms. In our fauna four groups are definable as follows: Outline elongate-oval; surface convex, pallid, with darker median parts of the disk; elytra with more or less evident scattered interstitial punctures, the dorsal punctures five to eight. Pacific coast regions. I (maculicolle) Outline more parallel; surface generally less convex................- 2 2—Upper surface more or less brilliantly metallic in lustre; dorsal punctures three to about six in number............ II (cupripenne) Upper surface black and without marked metallic lustre, this however feebly zneous in a few, such as metallescens and renoicum, the anterior parts often feebly greenish in placidum and allied forms PMGBeMitIGehys STEEN IM CPFAWS calor siviield sieveie ss cides Nees ciseee eee 3 3—Integuments thick; pronotal foveew as in the cupripenne group, at some distance from the sides and not formed partially by the Rea RUE AME U AL ONIN a cifagea oe eer cases cre sesa-cts stay foe oy fushiate Bvauezets III (melanarium) Integuments thin; pronotal fovee large, concave, formed externally by the more widely reflexed side margin.............. IV (placidum) The second and third groups extend entirely across the continent from the Atlantic to the Pacific, and the fourth from the Atlantic to the Rocky Mountains and far into the Sonoran regions of the southwest and Mexico. The cupripenne and melanarium groups form the larger part of the genus, the others being composed of but few species so far as known. Group I—maculicolle Subgenus Leucagonum nov. In the fauna of the southern Pacific coast regions there are several distinct species of this group, all formerly confused with maculicolle. The comparatively minute variolatum, of LeConte, 100 MEMOIRS ON THE COLEOPTERA was associated closely with maculicolle by that author, but the two are by no means allied and the former species has been assigned above to the genus Sericoda. The pronotal fovez are large, shallow and formed partially by the reflexed margin as in the placidum group. Maculicolle is a very isolated type of A gonum and without doubt demands a separate name, at least of subgeneric weight. The three forms in my collection may be known as follows: Body stout in form, very variable in size, convex, shining, the elytra feebly alutaceous in the female; color pale flavo-testaceous, the head more or less clouded, the central part of the pronotal disk and a large central elytral area blackish, the elytral plaga unevenly sinuate antero-laterally; under surface dark rufous, with paler legs, the abdomen in great part black; head not elongate, two-thirds as wide as the prothorax, with moderately prominent eyes and short and feeble to obsolete anterior impressions; palpi pale, the last joint subequal to the third or slightly longer; antenne somewhat longer than the head and prothorax, not very slender, the third joint a little longer than the fourth; prothorax a third to nearly half wider than long, the parallel sides evenly rounded and strongly reflexed; basal angles broadly rounded, the apical only blunt to broadly rounded; anterior impression angulate, feeble, the stria fine; fovez large, feebly concave, formed partially by the reflexed margin, finely and sparsely punctulate; elytra oblong-oval, broad, barely one-half longer than wide, rather less than one-half wider than the prothorax, the arcuate sides but little more arcuate basally; apex gradually obtusely ogival, the sinus feeble but evident; strie fine, smooth, grooved; intervals wide, varying from perfectly flat to slightly convex, sometimes rather strongly so toward the sides, having small scattered punctures toward the sides of the disk; met- episterna rapidly narrowed, one-half longer than wide; tarsi very feebly grooved externally, the anterior moderately thick in the male. Length (o' 2) 8.7-10.7 mm.; width 3.2-4.6 mm. California (San Francisco to San Diego). Abundant............. maculicolle Dej. A—Coloration, lustre and general characters as in maculicolle but more abbreviated, with the head relatively somewhat larger, the prothorax more transverse and more widely explanato-reflexed at the sides; elytra not one-half longer than wide; striz very fine; intervals broad, flat, smooth, not evidently punctulate even toward the sides, the third similarly with six distinct punctures. Length (2) 9.2 mm.; width 3.8 mm. California (Guadalupe Tsland) ios 6m. 6. Cohen transversus n. sp. Color obscure testaceous, with the head blacker, the legs flavate; elytral suture generally finely paler; size much smaller; surface moderately convex, shining, the elytra barely visibly iridescent; head relatively AMERICAN CARABOIDEA 211 larger, four-fifths as wide as the prothorax, with large and prominent eyes; surface declivous and alutaceous anteriorly; antennz slender, fuscous, the medial joints between three and four times as long as wide; prothorax relatively much smaller than in transversus, three- fourths wider than long; general outline and surface similar, except that the side margins are more reflexed anteriorly and still more widely so basally, and that the fovee are deeper, more acutely linear at the bottom and attain the basal margin; elytra one-half longer than wide and fully one-half wider than the prothorax, the striz finer and less impressed, the intervals flatter though sensibly convex; posterior puncture much less apical, at or before posterior fourth; apex similarly obtuse. Length (co 2) 4.2-4.5 mm.; width 1.6- PMD MUNTIOIS.\ SS. 2. Se ees reflexus Lec. 11—Form elongate-subparallel, rather convex, shining, pale rufo-flavate in color, the head, entire hind body beneath, a large quadrate spot not quite attaining the marginor suture and an apical area on each elytron, deep black; legs pale flavate; elytra wholly devoid of iridescence; head barely wider than an elytron, more than three- fourths as wide as the prothorax, with large prominent eyes; epi- stoma feebly concave at each side, the apex broadly sinuate; palpi with the fourth joint much longer and thicker than the third; an- tenne very slender, black, the first joint testaceous with nubilously black apex; prothorax one-half wider than long, the sides finely reflexed, rounded, gradually oblique and straight in nearly basal half, only little more reflexed basally, the angles very obtuse, scarcely blunt; base evidently narrower than the apex, the transverse im- pressions just traceable, the fovee oval, moderately impressed, not attaining the base; elytra fully three-fourths longer than wide, one- half wider than the prothorax, rather wider behind the middle than at base, obtusely rounded at apex; stric fine, smooth, rather abrupt, the intervals almost flat, the posterior puncture near apical fifth. Length (2) 5.5-6.0 mm.; width 1.9-2.2 mm. Indiana,—Levette. “0 8 EESTI oIESS @ Bole) EROS Che OrCNE RO renee ae ae pulchellus Lec. Of the species which I have not seen, obtusus Lec., from Lake Superior, has broadly rounded basal thoracic angles; flavipes, of the southern Atlantic regions, also has these angles rounded; micans is alluded to in the introductory remarks; bipustulatus Fab., is a European species said to occur in Vancouver Island, but probably not correctly identified; maculatus Lec., from Pennsyl- vania, is marked somewhat as in pulchellus, but has a black pro- thorax, and elegans Lec., of Texas, seems to resemble maculatus, the elytral spots confluent from the fourth to ninth stria, but does not have the thoracic sides more broadly reflexed basally and is somewhat smaller in size. The species described by Mr. Blatchley from Indiana, under the name Jaticeps, is evidently allied to flavi- cornis, but is somewhat larger; the head is said to be as wide as 212 MEMOIRS ON THE COLEOPTERA the prothorax, the flavate antennz with the apical half gradually dusky and the median thoracic stria entire; nothing is said as to elytral iridescence. In flavicornis the antenne are very pale and equally flavate throughout the length, the head very distinctly narrower than the prothorax, even in the female, the difference undoubtedly still more notable in the male, for, as in Dzplochetla, the head is a little larger in the female than in the male; in flavi- cornis the median thoracic stria is not entire, extending only between the feeble transverse impressions, and the elytral surface is distinctly iridescent. In his original description of pulchellus— from Evansville, Indiana—lLeConte states that the middle black spot of each elytron is marginal, and that the antenne are “‘ob- scure, articulis 3 pallidis”; I fail entirely to comprehend the de- scription of the antenne, and, in all my specimens, the middle elytral spot is equally and narrowly separated from the sides and suture. Calathus Bon. In Memoirs IV, 1913, page 159, I briefly réferred to the species of the Pacific coastal regions, basing the remarks upon rough determinations of species in my collection, identified by comparison with the material of the Horn and LeConte collections, but find on more careful study that these identifications were in some cases erroneous. Behrensi, for example, is the notably stout subparallel form, with red prothorax, found abundantly about San Francisco; it was said by Mannerheim to occur at Fort Ross, in Sonoma Co., and had been previously described by Dejean under the name ruficollis; quadricollis of LeConte is a very much narrower species. The true obscurus, from an unrecorded locality in southern Cali- fornia, and represented by a single female said to be 10 mm. in length, does not seem to be in my collection at present, although longulus may be closely allied. Finally, the specimen from Guada- lupe Island, which I there referred to quadricollis, proves to be a different thing and is described below under the name insularis. My Alaskan material does not include ingratus Dej., or incommodus Mann., but there are several undescribed species, smaller in size, which were said to have been taken on St. Paul Island, and, although personally I have no reason do doubt this locality, Mr. Wm. T. Davis informs me that some Hemipterids received by him from the AMERICAN CARABOIDEA 213 same collector, were in his opinion taken on the mainland and not on St. Paul Island. At any rate, the species of Calathus, three in number, said to be from St. Paul Island, are apparently hitherto undescribed. The species of the Pacific coast known to me thus far may be described as follows: Species of California, larger and stouter in build.................... 2 Species of Alaska and neighboring islands, notably smaller and nar- OST, 0305 Gass bon BORE Geen RECeRORNS Soe pO Ge Cicer nian I2 2—Third antennal joint much longer than the fourth................ 3 Third antennal joint not or but very slightly longer than the fourth... .4 3—Elytra without trace of a subbasal puncture near the scutellum; last palpal joint slender as usual, but with the tip transversely truncate. Body elongate-suboval, moderately convex, shining, the elytra opaculate; color pure bright testaceous, the elytra piceous- black, with the reflexed edge testaceous; head oval, with moderately convex eyes, not three-fifths as wide as the prothorax; antenne not very slender, three-fifths as long as the elytra; prothorax a fifth wider than long, the deeply sinuate apex scarcely three-fourths as wide as the base; sides feebly arcuate; basal angles right, slightly blunt; surface nearly smooth, the anterior impression distinct, the posterior obsolete; sides rather strongly and abruptly reflexed, becoming broadly declivo-explanate basally; elytra more than one- half longer than wide, nearly a third wider than the prothorax, the sides evenly and moderately arcuate to the base; apex evenly and gradually ogival; striw very fine, the intervals just visibly convex; dorsal punctures very fine, four in number. Length (Q) 9.5 mm.; width 3.9 mm. California (Mokelumne Hill, Calaveras Co.),— Beaeeere yd ell wa ty Poet ye tarrave vik Lait Chat oes PMc says, ial) wo ed Sveneed he ignicollis n. sp. Elytra with a small subscutellar puncture, not quite at the base; last palpal joint rather inflated, elongate-oval. Body less elongate and with notably inflated elytra, obscure rufous, the legs more flavate; elytra black, with dull rufous reflexed margins; surface alutaceous, the elytra opaque, the head nearly as in the preceding; antenne slender, two-thirds as long as the elytra; prothorax subsimilar in form and structure but relatively not quite so large and with notably rounded basal angles, the apical not so prominent and more obtusely rounded at tip; anterior transverse impression completely obsolete; sides similarly reflexed and basally explanate; elytra shorter, rather less than one-half longer than wide, two-fifths wider than the pro- thorax, the sides slightly more arcuate; strie very fine, the intervals flat; dorsal punctures small, fourin number. Length (2) 8.7 mm.; width 3.65 mm. California (Monterey)......montereyanus n. sp. 4—Body very much larger than in any other American species of the genus. Form stout, oblong-oval, testaceous, the elytra blackish, with the usual testaceous reflexed margins; lustre moderately shining, the elytra opaculate in both sexes; surface very moderately convex; head subtriangular, longer than usual, more than half as wide as the prothorax, the palpi slender, with obtusely pointed apex; 214 Memoirs ON THE COLEOPTERA antenne very slender, long, fully half as long as the body; eyes large, moderately convex; prothorax a fourth wider than long; sides subevenly and feebly arcuate, narrowly reflexed anteriorly, broadly explanate basally, the basal angles slightly obtuse and rounded; apex sinuate, much narrower than the base; surface with feeble ruguliform transverse lines medially, the anterior impression barely traceable; elytra oblong-oval, rather more than one-half longer than wide, a third (co) to two-fifths (2) wider than the prothorax, gradually rounding posteriorly at the sides from before the middle, ogival at tip; striz very fine, the intervals flat; sub- scutellar puncture distinct; dorsal punctures four; anterior male tarsi strongly dilated; met-episterna evidently though not greatly longer than wide. Length (o* 2) 11.0-12.0 mm.; width 4.5-4.9 mm. Guadalupe Island, off the coast of Lower California. Six SPECITIENSA.) eA eee ee tier fas oie ore guadalupensis Csy. Body smaller, of the usual size characterizing the west coast species. . .5 5—Antenne filiform, the third and fourth joints much longer than the Antenne almost as filiform, but with joints three to five differing but little in length:.’... caoe% dees eke. 0. eee 7 6—Body elongate-suboval, moderately convex, bright testaceous, the legs more flavate; elytra blackish-piceous; surface shining, the elytra opaculate; head scarcely at all longer than wide, slightly over half as wide as the prothorax, the eyes moderate, rather feebly convex; antennz moderately slender, only a little longer than the head and prothorax; last palpal joint somewhat thicker than the third; prothorax rather large, fully a fourth wider than long, the sides subevenly and somewhat strongly arcuate to the narrowed and moderately sinuate apex having obtuse angles, a little less converging or arcuate basally, the angles slightly obtuse, narrowly rounded; surface more evenly convex than in the three preceding, the sides rather abruptly well reflexed, but becoming only slightly more broadly so basally, the transverse impressions subobsolete; elytra evenly oblong-oval, slightly over one-half longer than wide, scarcely a third wider than the prothorax; strie extremely fine, less so on the declivity, the intervals perfectly flat throughout the length; dorsal punctures three to four; scutellar puncture distinct but small, remote from the scutellum and behind the base; female as usual with the last ventral strongly rounding and with a single puncture at each side as in the male. Length (2) 9.0 mm.; width 3.8 mm. California (San Diego). A single example, taken by the writer. tenuistriatus n. sp. Body nearly similar in form and coloration but with the elytra piceous- brown, with paler suture and reflexed edge, and with its surface much more shining, scarcely less so than the pronotum; body in general very pale testaceous; head slightly more than half as wide as the prothorax, narrower and more elongate than in tenuistriatus, and with the eyes smaller and notably more prominent; antenne very slender and longer, fully half as long as the body; prothorax smaller, more quadrate, only very little wider than long, the broadly AMERICAN CARABOIDEA 215 arcuate, feebly, anteriorly converging sides becoming more parallel and straighter posteriorly, the basal angles but little more than right and rather sharp, not even blunt at tip; anterior and posterior impressions both evident though feeble; sides narrowly but strongly reflexed, becoming gradually much broader and flat posteriorly; basal fovee elongate and feebly impressed, much more evident than usual; elytra narrower and less convex than in the preceding, three-fifths longer than wide, about a third wider than the pro- thorax, of the usual outline; striz rather fine but much less so than in the preceding and less sharply defined, not deeper on the declivity; intervals flat, the subscutellar puncture similar; dorsal punctures four to five; anterior tarsi of the male rather moderately dilated, much less so than in guadalupensis. Length (co) 8.8 mm.; width eee5unm.. Guadalupe Island. ...... ncaa. necie cies insularis n. sp. 7—Prothorax large, nearly half as long as the elytra and scarcely nar- rower, with distinct and only narrowly blunt right basal angles; strial intervals feebly and confusedly punctate, less evidently in the female. Body subparallel, rather convex, bright testaceous, the elytra black, with pale reflexed margins; surface polished through- out (co) or with the elytra very faintly alutaceous (2); head four- sevenths as wide as the prothorax, barely longer than wide, with well developed convex eyes; antenne moderately slender, filiform, a little longer than the head and prothorax; last palpal joint distinctly longer than the third; prothorax but very slightly wider than long, the sides arcuately converging in apical, parallel and straight in basal, half; sides moderately reflexed, becoming broadly sub- deplanate posteriorly only in the female; stria fine, biabbreviated, the transverse impressions obsolete, the fovee barely traceable; elytra one-half longer than wide, gradually obtusely ogival behind the middle; strie only moderately fine, more deeply impressed internally and apically in the male; intervals (o’) just visibly convex or (Q) flat; dorsal punctures unusually distinct, two to three in number, the subscutellar puncture distinct; three basal joints of the anterior tarsi (o’) very distinctly dilated, the fourth abruptly very narrow. Length (co 2) 7.5-8.5 mm.; width 3.2-3.4 mm. California (Hydesville, Valley of Eel River, Humboldt Co.). SHEREEVEXA MI PlES ..<, sans) aise) aye Sle FG Srv.cisi ete Sai c’a:o oe e's grandicollis n. sp. Prothorax relatively smaller, always distinctly narrower than the elytra and less than half as long, the basal angles evidently and sometimes rather broadly rounded; strial intervals not punctulate.......... 8 8—Color pale and bright rufo-testaceous, the elytra dark as usual. Body moderately narrow and elongate, the elytra but feebly dilated; lustre shining throughout (o’), or with the elytra more or less opaculate (9); head scarcely longer than wide, very little more than half as wide as the prothorax; antenne moderately slender, some- what attenuate distally, not quite half as long as the body; last palpal joint as long as the third and not thicker, obtusely pointed; prothorax only a fifth or sixth wider than long, and with the sides arcuate and converging apically, parallel basally, reflexed, becoming deplanate basally; fovee feebly impressed; impressions obsolete, 216 MEMOIRS ON THE COLEOPTERA the median stria fine; apical angles rather obtusely rounded at tip; elytra somewhat more than one-half longer than wide, fully a fourth wider than the prothorax; outline obtusely ogival behind the middle; striz fine, but little more impressed in the male, the intervals virtually flat; scutellar puncture distinct; dorsal punctures rather strong, about three in number; three basal joints of the anterior male tarsi rather strongly dilated. Length (o' 2) 8.0- 9.3 mm.; width 3.1-3.6 mm. California (San Francisco to Sta. Barbara)y \Very,abundantaseie ane eee quadricollis Lec. Color pale testaceous though somewhat duller, and with brownish-black elytra having the usual pale reflexed edges. Body larger, very much broader, subalutaceous, the elytra more opaque; head scarcely half as wide as the prothorax, but little longer than wide, the eyes well developed and rather prominent; antennz slender, much less than half as long as the body, the third joint somewhat evidently longer than the fourth as a rule; prothorax notably transverse, a third wider than long, the sides rounding anteriorly, straighter and subparallel basally, the angles rather broadly rounded; transverse impressions feeble but traceable, the fovee subobsolete; margins strongly reflexed, deplanate basally; elytra scarcely one-half longer than wide, a fourth wider than the prothorax, ogivally rounding behind; striez fine, deeper in the male, sometimes broken or sub- punctulate laterally; intervals feebly convex (0%), or perfectly flat (2); subscutellar puncture distinct, the dorsal punctures three to four; anterior male tarsi with the first three joints rather strongly dilated. Length (o Q) 8.2-10.0 mm.; width 3.6-4.2 mm. Cali- fornia (San Francisco). Moderately abundant. [C. behrensi Manin] is.cci Se a ee re eee tuficollis Dej. Color blackish-piceous, the prothorax generally a little paler or obscurely rufescent.:: hoa. eee wees bo ea 9 9—Prothorax nearly as in the preceding, distinctly wider than long... .10 Prothorax very nearly as long as wide; body more elongate.........11 10—Body moderately convex, rather small, narrower than in quadricollis, the elytra alutaceous in the male; head very evidently more than half as wide as the prothorax, the eyes well developed and some- what prominent; last ‘palpal joint somwhat longer .than the third, slender but obtuse at tip; antenne very slender and filiform, half as long as the body; prothorax nearly a fourth wider than long, in outline and impressions almost as in the preceding, the apical angles even more obtusely rounded; elytra slightly over one-half longer than wide, a fourth to third wider than the prothorax, gradu- ally obtusely ogival posteriorly; strizw fine, coarser and deeper on the declivity; intervals flat to just visibly convex; dorsal punctures three; subscutellar puncture evident; anterior male tarsi moderately dilated. Length (c") 6.8-8.0 mm.; width 2.8-3.0 mm. California (Sta. Clara Co.). Four specimens................ minuens n. sp. Body stouter, more nearly as in guadricollis, but with the anterior parts relatively smaller and the hind body more inflated; elytra rather shining (o"), strongly alutaceous (2 ); head small, elongate, scarcely more than half as wide as the prothorax; antennz rather slender, e~enye in AMERICAN CARABOIDEA 217 evidently less than half as long as the body; palpi very slender, the last two joints equal in length; prothorax fully a fourth wider than long, in outline nearly as in ruficollis and with similarly rounded apical and basal angles, but with the sides rather less reflexed; fovez vestigial, the median stria rather deep, biabbreviated; elytra more elongate, fully three-fifths longer than wide, gradually ogival with obtuse apex in about posterior half, less than a fourth wider than the prothorax; strie moderately fine, abrupt, a little deeper behind; intervals not quite perfectly flat; subscutellar puncture distinct; dorsal punctures four; anterior male tarsi very moderately dilated. Length (1c, 62) 7.5-8.2 mm.; width California (San Diego). 3.2-3.6 mm. Taken by Mr. Dunn and the writer. piceolus n. sp. 11—Form elongate-suboval, moderately convex, alutaceous, the elytra opaque, with the reflexed margins not distinctly paler; legs dark rufous; head elongate, four-sevenths as wide as the prothorax, the eyes well developed but not very prominent; antenne very slender, dark rufous; maxillary palpi with the last joint not quite as long as the third; prothorax barely at all wider than long, the sides broadly, subevenly arcuate, less so and subparallel basally; all the angl es rounded; surface subeven, the stria short; sides deeply reflexed, broadly explanate posteriorly, the fovee and impressions obsolete; elytra nearly two-thirds longer than wide, almost two- fifths wider than the prothorax, somewhat evenly elongate-oval, gradually pointed and ogival apically; strie very fine, only slightly stronger apically, the intervals perfectly flat throughout, the sub- scutellar puncture distinct; dorsal punctures fine, two to three in number. Length (2) 9.5 mm.; width 3.5 mm. California (Los RG SRIe ON) ERT see iseee, eo Said ls HUG Seta tee Sl eieinne longulus Csy. 12—Elytral strie deep, sharply defined and groove-like, the intervals throughout the length perfectly flat, micro-reticulate and minutely and feebly, confusedly subpunctulate. Body elon gate, narrow, nearly parallel, polished and piceous-black, with diaphanously pale thoracic sides; elytra alutaceous, with the narrowly reflexed edges scarcely pale; head scarcely elongate, four-sevenths as wide as the prothorax, with large but very moderately convex eyes; antenne slender, flavate, nearly half as long as the body; last palpal joint very gradually pointed, a little longer than the third; prothorax a fourth wider than long, the sides broadly arcuate and converging anteriorly, less arcuate and just visibly converging behind the middle; basal angles narrowly rounded, the apical well defined and prominent; transverse impressions nearly obsolete, the stria fine but broadly impressed; fovez short, linear and feeble, at basal third; sides very narrowly and feebly reflexed, gradually a little more widely so basally; elytra elongate, fully two-thirds longer than wide, scarcely a fourth wider than the prothorax; sides parallel, very feebly arcuate, rounding in about apical third; subscutellar puncture strong; dorsal punctures two in number. 7-2 mm.; width 2.75 mm. Alaska (St. Paul Island Length (2) ). One speci- planifer n. sp. 218 MEMOIRS ON THE COLEOPTERA Elytral strie finer, less abruptly defined and feebly impressed, the intervals not exactly flat and not evidently uneven or punctulate..13 13—Form elongate, moderately convex, shining, the elytra not quite so polished as the anterior parts, piceous in color throughout, the thoracic margins narrowly pallid; head three-fifths as wide as the prothorax, with large and rather prominent eyes; antennz slender, flavate, half as long as the body; last two palpal joints equal ia length; prothorax quadrate, very slightly shorter than wide, the sides broadly arcuate, more converging anteriorly; apex moderately narrowed, deeply sinuate; basal angles narrowly rounded; surface with vestigial impressions and long and very feeble fovee, the sides rapidly declivous, with narrow reflexed edge, scarcely differing at all basally; elytra three-fifths longer than wide, two-fifths wider than the prothorax, the sides rapidly ogivally rounded at apex; striz very fine, not impressed; subscutellar puncture coarse; dorsal punctures three or four; three basal joints of the anterior male tarsi rather strongly dilated. Length (307, 72) 7.0-8.0 mm.; width 2:8 mm. Alaska (Gt-Baullisland).2. 2. sees beringi n. sp. Form still narrower, very elongate, more convex and smaller in size, strongly shining throughout above, scarcely less so in the female, blackish-piceous above throughout, the sides of the prothorax only very narrowly pallid; legs pale flavate as usual; head smaller and narrower than in the preceding, slightly more than half as wide as the prothorax, the eyes well developed, not very convex; last palpal joint a little longer than the third; prothorax unusually and evenly convex and very smooth from side to side, fully as long as wide to but little less; impressions all very feeble; sides narrowly reflexed, more widely at the narrowly rounded basal angles; elytra long, three-fifths to one-half longer than wide, a third wider than the prothorax, evenly rounding in about apical third; striz rather fine, deeply impressed (c"), very moderately (2); intervals somewhat strongly to feebly convex; subscutellar puncture strong; dorsal punctures two in number; anterior tarsi (c") rather strongly dilated. Length (o' 2) 6.0-7.0 mm.; width 2.2-2.5 mm. Alaska (St. Paul Island). Fourteen examples....................-- nanulus n. sp. Longulus approaches obscurus Lec., more closely than any other species and possibly may be identical, but it is stated of obscurus that the sides of the prothorax are distinctly depressed though hardly reflexed; in Jongulus the sides are strongly reflexed, more feebly at base, where the surface as usual becomes broadly deplan- ate; it is also said of obscurus that it is ‘‘minus elongatus.” The very elongate form of Jongulus is its most striking feature; it is very much narrower and more elongate than rujicollis and more sO even than in the narrower quadricollis, both of which had been described just before obscurus in the text (Pr. Acad. Phila., 1854, Pp. 37). So I hesitate to propose any synonymy at present. — é _ Since my last study of this genus I have received a specimen of confusus Lec., taken by Sherman at Marquette, Lake Superior; it evidently belongs to the same group as the Alaskan species above described, and so may possibly be identical with ingratus Dej. ‘It is much less elongate than beringi and very much larger than ‘nanulus, which last is the smallest species known from North America. The following are four additional species of this genus: AMERICAN CARABOIDEA 219 Calathus ventricosus n. sp—Form, elongate-ovoidal, moderately con- vex, black, piceous beneath, the legs dark rufous; sides of the prothorax diaphanously pale; upper surface moderately shining, the elytra opaque; head somewhat elongate, four-sevenths as wide as the prothorax, with moderately convex eyes; antenne ferruginous, nearly half as long as the body; palpi pale, the last joint slender, barely longer than the third; prothorax scarcely visibly wider than long, the sides feebly arcuate, gradually a little more so and moderately converging anteriorly, the apex deeply sinuate and two-thirds as wide as the base; basal angles blunt at tip; impressions and lineate fovee scarcely traceable; sides abruptly and strongly reflexed throughout the length, narrowly toward apex, broadly but not deplanate basally; elytra somewhat over one- half longer than wide, one-half wider than the prothorax, oblong-oval, with distinctly arcuate sides, which as usual are not more arcuate basally, obtusely ogival behind the middle; striz fine, somewhat deeper on the declivity; intervals virtually flat; subscutellar puncture distinct; dorsal punctures four; met-episterna subtriangular, but little longer than wide. Length (9) 9.6 mm.; width 4.0 mm. Mississippi (Vicksburg). I could only secure a single example of this interesting species, which can be compared only with obesulus Csy., differing in its smaller prothorax, more dilated elytra and less elongate antenne— of the female in each case. Calathus peropacus n. sp—Form very elongate-suboval and notably depressed, piceous-black and moderately shining, the elytra deeper black and densely opaque; under surface rufo-piceous, the legs dark tufous; head slightly elongate, four-sevenths as wide as the prothorax, the eyes moderate and rather prominent; palpi slender, piceous, the last two joints equal in length and thickness; antennz blackish-piceous, slender, less than half as long as the body, the pubescence of the fourth joint beginning very abruptly at basal third; prothorax quadrate, as long as wide or very nearly, widest at the middle, the feebly arcuate sides less converging and straighter basally than apically; basal angles obtuse and rounded; apex much narrower than the base, deeply sinuate, with distinct and only slightly blunt angles; surface narrowly reflexed at the sides, gradually becoming broadly deplanate and more opaque, and also a little more reflexed at the edge, basally; impressions and fovee vestigial, the short median stria evident; elytra four-fifths longer than wide, 220 MeEmMorrs ON THE COLEOPTERA scarcely two-fifths wider than the prothorax, the sides gradually rounding behind the middle; strie very fine; intervals flat; subscutellar puncture distinct; dorsal punctures very fine, three in number. Length (9) 10.5-I11.0 mm.; width 3.75-4.0 mm. Arizona (Palmerlee)—H. A. Kaeber. Two specimens. This species stands rather alone and is not closely allied to any — other in my collection; it is much larger and less convex than ~ either opaculus Lec., or obesulus Csy., and has the anterior parts © less shining and the elytral striz still finer and less deep. It is © also very much larger than sonoricus Csy., with the latero-basal parts of the pronotum widely and concavely explanate in a manner | not even suggested in sonoricus. Calathus calator n. sp.—Narrow, elongate-suboval, rather convex, highly polished throughout, blackish-piceous, the anterior parts dark — rufous; under surface pale piceous, the legs pale brownish-flavate; head half as wide as the prothorax, the eyes but feebly convex; antenne slender, pale testaceous, more than half as long as the body; prothorax © very nearly as long as wide, widest at about the middle, the sides very evenly arcuate throughout and finely reflexed, a little more so basally; surface not deplanate at the sides basally, the fovee shallow, elongate and discal; impressions barely traceable, the stria very fine and feeble; apex deeply sinuate, only three-fourths as wide as the base; elytra — elongate, subparallel, two-thirds longer than wide, barely perceptibly — wider than the prothorax, the apex very gradually and evenly rounded; striz fine but sharp, smooth; intervals feebly convex, the third with three punctures, the two anterior in the third, the third in the second, stria; tarsi long and slender; tarsi and tibie darker than the femora. Length (2) 7.7 mm.; width 2.9 mm. Colorado (Peaceful Valley),—Cockerell. This species can be compared only with coloradensis, but it is still narrower, with relatively narrower head and paler anterior parts and with the pronotal surface not deplanate toward the hind angles. Calathus aquilus n. sp—Form more abbreviated and smaller in size, polished and blackish-piceous throughout, the sides of the prothorax ¢ diaphanously somewhat paler; under surface blackish-piceous, paler anteriorly, the legs pale rufous throughout; head moderate, with slightly prominent eyes, evidently more than half as wide as the prothorax; antenne pale, three-fifths as long as the body; prothorax shorter, more than a fourth wider than long, widest submedially, the sides very mod- erately reflexed, barely more so gradually toward base, arcuate, rather straighter behind the middle; surface feebly, subevenly convex, with fine transverse rugulze, not deplanate postero-laterally; fovee large, irregular, very shallow and scarcely definable, distant from the sides as usual;. elytra shorter, barely one-half longer than wide, fully two-fifths La AMERICAN CARABOIDEA 221 wider than the prothorax, oblong, with distinctly arcuate sides, gradually but more rapidly rounding apically; striz fine, nearly smooth; intervals very nearly flat, the third with three punctures placed as in the preceding; anterior male tarsi with the first three joints distinctly dilated and sub- equal in length; hind tarsi very slender. Length (co) 7.0 mm.; width 2.75mm. Colorado (Ouray, 7500 ft. elev.),—Wickham. Quite distinct from either calator, coloradensis or reductus, all of ‘which are also inhabitants of Colorado, in its much more abbrevi- ated form; veductus has the prothorax narrower and more elongate than in either of the others mentioned. Pristodactyla De}. The following species is allied to zwniana, but differs in its smaller anterior parts, the head especially being much smaller, relatively wider elytra, more slender maxillary palpi, smaller mandibles, less equally and more anteriorly rounded sides of the prothorax and in a consequently pronounced difference of facies: _ Pristodactyla neomexicana n. sp.— Deep black and rather shining, the elytra opaque; surface distinctly convex; legs piceous; head three- fifths as wide as the prothorax and very distinctly narrower than an elytron, with moderately prominent eyes; palpi pale testaceous, the last joint a little longer than the third, narrowly truncate at tip; an- tenne ferruginous, the four basal joints more piceous, not quite half as long as the body; prothorax widest near apical third, slightly wider than long, the sides rather strongly rounded, oblique and feebly arcuate in fully basal half; apex sinuate, with well rounded angles, the basal angles still more broadly rounded; posterior transverse impression feeble, the anterior obsolete; stria deep, abbreviated a little .at apex, attaining the base; fovez linear, feebly impressed, smooth; sides very moderately reflexed, scarcely differing basally; elytra two-thirds longer than wide, almost one-half wider than the prothorax, obtusely ogival at apex, the parallel sides broadly, evenly arcuate; strie fine, feebly impressed, finely punctulate; intervals almost flat; dorsal punctures three, the first at basal third; met-episterna slightly elongate; first three joints of the anterior male tarsi strongly dilated. Length (o’) 10.5-11.0 mm.; width 4.1-4.3 mm. New Mexico. One example from an unrecorded source and two from Cloudcroft, the latter sent by Knaus. In both this species and zuniana the tarsal claws are virtually smooth beneath, without trace of fimbriolation, but, under high power, there are visible basally about three very feeble serruliform crenules. The type of this species was considered with the larger type of zwniana in my previous work on the genus (Mem. Col., IV, p. 160) but it evidently represents a distinct species. 222 MEMOIRS ON THE COLEOPTERA The two following species are much narrower, more parallel and less ventricose than arizonica, zuniana or neomexicana, and are of a paler piceous-brown color. They evidently belong to the same group as that represented by Anchomenus mollis Dej., of Alaska, which is erroneously assigned generically, but differ in some respects according to the description of Dejean: Pristodactyla binaria n. sp.—Body elongate, parallel, feebly convex, shining, with opaculate and closely micro-reticulate elytra, dark brown in color, the edges slightly pale; under surface and legs rufo-ferruginous; head slightly elongate, with moderately prominent eyes, two-thirds as wide as the prothorax, the anterior impressions shallow and vague; palpi pale, the fourth joint distinctly longer than the third; antenne uniform pale rufo-ferruginous, moderately slender, about half as long as the body, the third joint distinctly longer than the fourth; prothorax a fifth or sixth wider than long, widest a little before the middle, the sides evenly and moderately rounded, moderately oblique and usually very slightly sinuate posteriorly, the angles broadly rounded, the punc- ture on the edge distinct; base as wide as the apex, margined, transverse medially, becoming strongly and gradually arcuate laterally; apex moderately sinuate, the angles blunt at tip; margins strongly reflexed, broadly so at base, where however they are separated from the fovee, which are elongate and feebly, vaguely impressed and virtually smooth; surface almost smooth, the impressions feeble, the stria fine, impressed, not attaining the base; elytra elongate, oblong-subparallel, with feebly arcuate sides, becoming gradually but little more rounded basally; apex gradually rounded, the sinus obsolete, nearly two-thirds longer than wide and about three-sevenths wider than the prothorax; strie fine, smooth, evidently impressed, the scutellar stria long, the ninth midway between the eighth and the edge; intervals slightly convex, with fine and feeble scattered punctures laterally, the third with two punctures at the second stria, before the middle and near apical fourth; met- episterna rapidly narrowed, not quite twice as long as wide; anterior thale tarsi unusually strongly dilated, feebly sulcate medially. Length (o 2) 8.5-9.8 mm.; width 3.3-3.8 mm. S. Arkansas. Five examples. I have no reason to doubt the accuracy of the habitat assigned this species, but have no record of the collector or other data con- nected with the specimens. The species from the far north— “prope fines Aquilones,’’ described by LeConte under the name Pristodactyla advena, and conceived by the author to connect Pristodactyla and Pristonychus, I have not seen, but it is evidently of the mollis group and related to binaria and scolopax, here de- scribed; but it isnot piceous in color and in great part dull in lustre, as in the latter two species, but of a shining black; it is 9.7 by 3.5 mm. in dimensions and the elytra have two dorsal punctures. AMERICAN CARABOIDEA 223 _ The following species is much smaller, and, relatively, the pro- thorax is not so large: Pristodactyla scolopax n. sp.—Body smaller and narrower, deeper umber-brown in color, the under surface and legs nearly as in the pre- ceding; general characters subsimilar; head not elongate, more than two-thirds as wide as the prothorax, with more prominent eyes; antenne “nearly similar; prothorax almost similar but not paler at the sides, which are straight and feebly oblique posteriorly, with the basal angles “more narrowly rounded and with more conspicuous puncture; side _ margins rather less broadly reflexed; general features similar; elytra _ narrower and still more elongate, only about a third wider than the : prothorax, the gradually rounded apex without sinus; strie, intervals and two dorsal punctures nearly as in binaria; tarsi almost similar. Length (@ 2) 7.8-8.7 mm.; width 2.8-3.1 mm. Colorado. Levette collection. Nine specimens. Besides mollis and the two preceding, there are two other Alaskan species which may be assigned to Pristodactyla, both having two dorsal elytral punctures; one of these, Anchomenus lenis Mann., from Kodiak Island, is said to differ from mollis in its larger and narrower prothorax, more narrowed and more strongly reflexed toward base, obliquely rounded basal angles and more elongate elytra, these characters fitting the two here described better than the recorded characters of mollis. According to a manuscript fhote by LeConte, /enis, in fact, is said to be a Pristodactyla. The second species was named Anchomenus dulcis by Manner- _ heim, and is from the Kenai Peninsula; it is said to differ from lenis in its still more elongate form, longer and narrower prothorax, not linearly but arcuately narrowed posteriorly, with less reflexed margins and less obliquely truncate hind angles, and also in having shorter elytra. LeConte does not seem to have seen this species. The following species resembles semirufa somewhat in general form and size, but has the head and prothorax relatively smaller, . the elytra more opaque and the coloration very different: *Pristodactyla subopaca n. sp.—Narrow, elongate-oval, small in size and moderately convex, deep black, the legs piceous-black; upper _ surface highly polished anteriorly, the elytra rather densely opaque; head barely at all elongate, fully two-thirds as wide as the prothorax, the eyes well developed but only moderately prominent; palpi rufous; antenne slender, fusco-testaceous, clearer basally, fully four-sevenths as long as the body; prothorax very little shorter than wide, widest before the middle, the sides moderately and subevenly arcuate through- _ out the length and finely reflexed; basal angles obtuse and rather broadly i» a 224 MEMOIRS ON THE COLEOPTERA rounded, the apical bluntly rounded; base transverse, rounding laterally, very little wider than the feebly sinuate apex; surface evenly and slightly convex throughout, very smooth and impunctate, the transverse im- pressions very feeble, the stria fine, subentire; fovee small, narrow, feebly impressed, linear and at some distance from the sides; elytra elongate-oval, three-fifths longer than wide, two-fifths wider than the prothorax, the sides not more arcuate at base; apex gradually rounded, without trace of sinus; basal margin sinuate, making a very sharp and acute angle with the sides; strie fine, with very feeble and obscure micro-punctulation; intervals perfectly flat, the third with four small punctures, all at the third stria; under surface black, shining, the legs moderate. Length (2) 8.0mm.; width3.0mm. Mexico (Tres Marias, Morelos), —Wickham. I can find no published description according in any way with this very distinct species and therefore regard it as undescribed. The tarsal claws are long and have within a distinct fringe of rather long spicules. Onypterygia Dej. Onychopterygia G. & H. (emend.) In many respects this remarkable neotropical genus is allied closely to the Platynid series of genera, but the tarsal claws are strongly and closely pectinate beneath. The integuments are more or less brilliantly metallic in color and the genus therefore constitutes one of the more conspicuous types of the Carabide. The species are rather numerous. Hépfneri Dej., is a larger species, having the cupreous-red and uniformly colored elytra dull in lustre, in a way foreign to most of the others; my representatives, taken by Baron, in Guerrero, are apparently larger than Dejean’s type, measuring as much as 14 mm. in length, but they seem to satisfy his description otherwise. Tvicolor and some others have the elytral apices spiniform. The following seems to be a hitherto undescribed small species: *Onypterygia cupricauda n. sp.—Outline elongate-suboval, strongly convex and highly polished throughout, the head and pronotum black, with feeble bluish lustre; elytra brilliantly green, gradually cupreous apically; under surface obscure rufo-ferruginous, the legs piceous, the femora more nearly black; head elongate, rhomboidal, nearly three- fourths as wide as the prothorax, with rather prominent and well de- veloped eyes; anterior impressions small, deep, linear; mandibles small, nearly straight except at tip; mentum tooth sharply triangular; palpi piceous, pale at tip, the last joint fusoid, gradually pointed, as long as the third and a little thicker; antenne slender, fusco-ferruginous, the AMERICAN CARABOIDEA 225 joints nubilously pale basally, distinctly more than half as long as the y; prothorax about as long as wide, the sides rounded, oblique basally, becoming feebly sinuate at the distinct angles, very finely reflexed throughout the length; apex sinuato-truncate, narrower than : base; surface slightly punctate at the basal fovez, which are rather coarse and deep, linear; transverse impressions both feeble, the stria fine, biabbreviated; elytra evenly oblong-oval, with arcuate sides and obtusely ogival apex, two-thirds longer than wide, not quite twice as wide as the prothorax, the oblique apices only just visibly sinuate, evenly rounded at the suture, the latter wholly devoid of prolongation; strie fine but abrupt, finely punctulate; intervals flat; met-episterna “much elongated; legsslender. Length (2) 7.5-8.0 mm.; width 2.8 mm. Mexico (Guerrero),—Baron. _ This small, metallic and convex species is evidently allied to _e@neipennis Chd., but in that the under surface is described as shining black, and the brilliantly green elytra are suffused with coppery reflection throughout; it is from Oaxaca. Lachnophorus De}; The following is very close to elegantulus Mann., but seems to differ subspecifically : Lachnophorus elegantulus ssp. ocularis nov.—Almost exactly similar to elegantulus in every way, except that it is a trifle stouter in the hind body and that the legs are pale flavate throughout; eyes slightly larger, separated by less than their width from a vertical point of view; thoracic constriction less sharply marked, the short sides thence to the base less parallel; elytra nearly similar in form and marking, but with the punc- tures of the interstitial series rather more evident. Length 5.2 mm.; width 2.15 mm., Texas. A single specimen. In elegantulus the eyes are separated by just twice their width when viewed vertically.* Galerita Fabr. This remarkably isolated genus is almost peculiarly American and contains a large number of species; so far as known to me they may be segregated into two subgeneric groups, based upon peculiarities of elytral sculpture, but it would be premature, with- out the African and East Indian representatives, to assign definite Names to these groups. In all the subarctic North American species the elytra have a perfectly even surface, with simple and feebly punctate strize, the intervals with fine and evenly diffused *A small form occurring at Yuma, Ariz., seems to represent a valid variety of Tetragonoderus fasciatus Hald., different from undulatus Lec. T. L. Casey, Mem. Col. IX, Feb. 1920. ~ 226 MEMOIRS ON THE COLEOPTERA punctulation and pubescence; but, in the tropical forms, the elytra generally have many fine costules, with a finer geminate pair of raised lines along the middle of each interval. Between the very long scutellar stria and the feebly deflexed basal part of the first regular stria, there is usually a series of punctures, particularly developed in species of the /econtei type. The joints of the anterior male tarsi are very asymmetric, the outer part being bluntly pro- duced; this asymmetry is far more conspicuous than in the Pter- ostichid genus Loxandrus. The pronounced isolation of Galerita in morphologic type, is even more evident in the larva, as shown by Sallé—quoted by Lacordaire—than in any of the numerous peculiarities of the imago. There is such a monotonous con- sistency in form, size and coloration among the species as to have led to a good deal of confusion in synonymy, the case being rather like that of Brachinus in this respect; but in reality our species are far more numerous than hitherto suspected, those at present repre- sented in my collection being readily separable as follows: Elytral surface even: 32.2. 2ee6ee. 2c been eee oe Z Elytral surface finely costulate; legs black......................-- 16 2—Legs pale ferruginous in color.................-+s5 50s -=eeeeeee a Legs black... sucue ote wenn ce oe nee oes 5 14 3—Sides of the head behind the eyes partially parallel or very moderately oblique, generally a little more oblique in the male than in the fermalés.....cc.c4 ses casero dienes ainsie 3s ele eis oes rr 4 Sides strongly oblique from the eyes to the base in both sexes........ 9 4—Antenne longer and very slender in both sexes, the fourth joint rather more than four times as long as wide.................-+++ssuem 5 Antenne much shorter, the fourth joint not four times as long as wide.. .8 5—Body more slender, the elytra about twice as long as wide in both sexes. Black, the prothorax above throughout and beneath, except at base, and also the legs, ferruginous, the tarsi darker; head longer than wide, three-fourths as wide as the prothorax, the eyes very prominent, at one-half more than their length from the base; tem- pora obliquely rounded from the eyes to the base; antenne of the usual coloration, the basal joint ferruginous, the next three black, the remainder blackish-brown, gradually paler toward the antennal tip; neck much constricted; prothorax somewhat longer than wide, the parallel sides broadly and subevenly arcuate, broadly reflexed, more so at base, sinuate before the basal angles, which are obtuse, blunt and reflexed, the base one-half wider than the feebly sinuate apex; apical angles broadly rounded and obliterated, the surface feebly, subevenly convex, strongly and densely punctate and feebly rugulose, the pubescence pale; surface impressed transversely at base; elytra nearly twice as wide as the prothorax, parallel, the . AMERICAN CARABOIDEA 227 sides evenly rounding at base; apex obliquely truncate, the external angle rounded; striz fine, feebly punctulate, the intervals closely, feebly punctate and with short fusco-fulvous pubescence, the general surface dull and strongly micro-reticulate; anterior male tarsi with a long oblique external series of squamules as usual. Length (@ Q) 16.0-16.8 mm.; width 5.3-5.65 mm. Missouri (St. Louis); also a single unlabeled male from the Levette collection. intermedia Csy. Body less slender, the elytra a little less than twice as long as wide in emmnelescwider inthe female. ........0...cecc cece eens she eees 6 -6—Size much smaller than in the two following, the prothorax narrow, the sides deeply sinuate before the basal angles. Coloration, lustre, sculpture and vestitute nearly as in the preceding, the short elytral hairs still darker; head narrow, much elongated, deeply and densely punctate, four-fifths as wide as the prothorax, the eyes abruptly very prominent, the tempora circularly rounded to the neck and be- coming nearly parallel toward the eyes; palpi moderate, the last joint very obliquely truncate as usual; antennz sharply tricolored, joints two to four black, the remainder somewhat pale red-brown; prothorax narrow, elongate, much less than half as wide as the elytra, the general structure and sculpture as in the preceding but narrower and more elongate, the sinus before the basal angles deep, the reflexed angles more conspicuous; elytra three-fourths longer than wide, in general form and sculpture as in intermedia; anterior male tarsi even more strongly, asymmetrically dilated, the basal joint relatively distinctly shorter than in intermedia. Length (o) 15.7 mm.; width 5.5 mm. Missouri (St. Louis). angusticeps n. sp. Size larger, the prothorax and head broader, the thoracic sides much more shallowly and broadly sinuate before the reflexed and obtuse Oud GPUS 36.5 Sp 6c ee eee een Ree oa ii ce oie 7—Color black, the prothorax and legs as in the preceding, the elytra varying from nearly black to decidedly bluish; head somewhat wider, moderately elongate, the punctures rather coarse, deep and dense, the front with a small rufous medial spot; eyes very promi- nent, the tempora feebly converging and circularly rounded to the neck; antenne slender, sometimes uniformly fusco-ferruginous though paler at base, rarely with the tricoloration of the preceding more or less evident; prothorax slightly longer than wide, the parallel sides broadly, subevenly arcuate, becoming sinuate basally and parallel for a short distance at the angles, the tips of which are sharply defined; surface somewhat densely and rugulosely punctate, broadly subdeplanate along the sides, feebly, transversely impressed at base, deeply concave at the reflexed angles; scutellum narrow, acutely attenuate; elytra twice as wide as the prothorax, three- fourths to four-fifths longer than wide, just perceptibly widest a little behind the middle, the feebly arcuate sides evenly rounded at base; apices and general surface as in the preceding two species; anterior male tarsi only moderately dilated, very asymmetric, the external fulvous fringe conspicuous, the basal joint as long as the 228 MeEmorrs ON THE COLEOPTERA next two combined. Length (o' Q) 17.0-18.5 mm.; width 6.0- 6.6 mm. Rhode Island, New York (Long Island), Maryland, Pennsylvania, Lake Superior (Marquette), Indiana, Iowa and Missouri. [G. americana Fab., nec Linn.; cyanipennis Dej., and GordtcollasiChad\; 2 5 Bek oie ies he So os Be eee janus Fabr. Color in general as in the preceding, except that the elytra are deep black and without bluish hue; head elongate, three-fourths as wide as the prothorax, coarsely punctato-rugose, more sparsely punctate anteriorly on the median longitudinal convexity, the central red spot scarcely definite; pubescence coarse, fulvous and rather long; eyes very prominent, the tempora circularly rounded, sub- parallel behind the eyes; neck deeply constricted as usual; antenne rather long, colored as usual, the first four joints conspicuously pubescent; prothorax large, elongate, widest at two-fifths from the apex, the sides broadly arcuate, broadly sinuate basally, the angles very obtuse but with definite tips, broadly and strongly reflexed; punctures dense and relatively fine, subrugose; surface broadly sub- deplanate laterally, the edge narrowly reflexed; elytra nearly twice as wide as the prothorax, four-fifths longer than wide, in general form and sculpture nearly as in janus, but with the short, fine and abundant pubescence more obscure, finer; anterior male tarsi with the first three joints strongly, obliquely asymmetric as usual, the first as long as the next two. Length (o’) 21.0 mm.; width 6.9 mm. Florida. [G. thoracica Csy. nec Chev.]............... caseyi Leng 8—Form notably elongate, colored as in the preceding, the elytra deep black; head broad, oblong, slightly longer than wide, nearly four- fifths as wide as the prothorax, the eyes large but only very moder- ately prominent, at less than one-half more than their own length from the base, the tempora near the eyes nearly as prominent as the latter, rapidly, circularly oblique thence to the constricted neck; surface convex, deeply and densely punctato-rugulose and with a conspicuous central red spot, immediately before which there is a small polished smooth spot; anterior impressions broad; antenn# short, the basal joint pale rufous, the next three deep black, the remainder pale brown, one to four with dense shaggy pubescence; prothorax not distinctly longer than wide, widest slightly before the middle, the sides rather strongly, evenly arcuate, becoming parallel for a short distance at base, the angles right but distinctly rounded; base rectilinearly transverse, the surface densely punctate, not de- planate though gradually sloping laterally, the basal fovee deep, connected transversely by a feebly impressed line; elytra very feebly inflated posteriorly, more than three-fourths longer than wide, in general form, sculpture and pubescence as in the preceding species, not quite twice as wide as the prothorax. Length (Q) 17.7 mm.; width 6.0 mm. Rhode Island (Boston Neck)... ..occipitalis n. sp. 9—Tempora longer, much longer than the length of the eyes........10 Tempora notably short, about as long as the eyes................-- 13 10—Base of the prothorax relatively wider, only a little narrower than the maximum width... <.60.0.0. 40050 Ss «desler II Base much narrower than the maximum width..................-- 12 ron oa fd ih, ee AMERICAN CARABOIDEA 229 1i—Sinus before the basal thoracic angles deep, rendering the angles laterally prominent; antennal pubescence moderate. Form rather ventricose, the hind body only moderately elongate; coloration and sculpture nearly as in all the preceding species, the elytra black, without bluish tinge; head but slightly elongate, four-fifths as wide as the prothorax, the punctures strong and close-set, the pubescence rather long, fulvous; frontal red spot more or less evi- dent; eyes very prominent; tempora converging and arcuate; antenne slender, the basal joint ferruginous, with blackish tip, the next three black, the remainder pale red-brown; prothorax dis- tinctly elongate, widest at the middle, where the sides are rather strongly rounded, thence oblique and less arcuate anteriorly, more oblique behind to the rather deep sinus, the basal angles obtusely rounded at tip; surface moderately and closely punctate and sub- rugulose, gradually feebly reflexed at the sides, the edge abruptly upturned; fovez deeply concave; elytra three-fourths longer than wide, distinctly more than twice as wide as the prothorax, rather more convex than usual, the humeri more rapidly rounded; striz rather fine but deep, punctulate, the ground punctures and pubes- cence nearly as in janus; punctures of the subscutellar series widely separated. Length (co) 16.5 mm.; width 5.8 mm. Florida (New Augustine),—Ganung. [G. dubia Lec.]. Probably described by Dejean from a LeConte specimen from southern Georgia. lecontei Dej. Sinus toward base of the thoracic sides broad and feebler, the sides becoming subparallel thence to the base; antennz bristling basally with long shaggy pubescence. Form still more ventricose, the elytra relatively broader and not so convex; coloration as in the preceding; head nearly as in lecontet but with the punctures be- coming very fine and sparser basally, the eyes even more con- spicuously prominent and the tempora even more oblique to the narrow neck; central red spot distinct; antenne slender, pale brown, the basal joint brighter rufous, not dark at tip, joints three to five not more than piceous; prothorax slightly broader though longer than wide, the sides nearly similar, except basally, the basal angles very much more broadly rounded; surface more finely punc- tured and with shorter, finer pubescence, less reflexed at the sides, the foveze narrower, remote from the sides, not forming part of the reflexed angles so evidently as in Jecontei; elytra two-thirds longer than wide, nearly two and one-half times as wide as the prothorax, less convex but otherwise nearly similar, except that the punctures of the subscutellar series are rather more close-set and more distinct. Length (2) 16.5 mm.; width 6.3 mm. Texas (near El Paso),— SPREE PA eos rae ea% | avete cud Skeets alah ok wise ace 6s crinicornis n. sp. 12—Body elongate, moderately ventricose and only feebly convex; coloration as in all the preceding species, the black elytra never with very evident bluish bloom; head oval, rather more than three- fourths as wide as the prothorax, with a central rufous spot some- times elevated in prolongation of the anterior axial convexity; punctures close-set, the erect vestiture bristling; eyes very promi- 230 MEMOIRS ON THE COLEOPTERA nent, the tempora very oblique and moderately arcuate, longer than in the two preceding species; antennz slender, tricolored as usual; prothorax notably elongate, widest and strongly rounded at the middle, the sides thence oblique and straighter to the apex, broadly sinuate basally, the angles obtusely rounded and more or less feebly everted; surface less convex than usual, finely, very closely punctate and subrugulose, moderately flavo-pubescent; sides broadly declivo-explanate, the fine edge sharply upturned as usual; foveze large, concave; elytra three-fourths to four-fifths longer than wide, more than twice as wide as the prothorax, feebly subinflated posteriorly, the humeri strongly rounded; striz mod- erately fine, sharply grooved, finely, feebly punctate, the general ground sculpture as in janus and the other species before described: male with the external oblique angles of the first three anterior tarsal joints rather sharply rounded, the basal joint as long as the next two. Length (co 2) 17.0-19.0 mm.; width 5.5-6.6 mm. Pennsylvania and North Carolina (Asheville). [G. americana Dej., nec Linn.; borealis Cast:, and longicollis Chd.]....... bicolor Drury A—Similar in nearly all respcts to bicolor but not quite so elongate, the head a little narrower; prothorax distinctly less elongate, but just visibly longer than wide, the sides more evenly rounded though similarly widest at the middle, the sinus rather more abruptly formed; elytra two-thirds longer than wide. Length (o') 17.0 mm.; width 5.8 mm. Iowa (the locality unrecorded). iowensis n. subsp. B—Nearly as in bicolor but narrower, the head narrower, with still somewhat more prominent eyes, the tempora—converging thence to the neck—straighter; prothorax narrower and relatively still more elongate, the basal angles rather less broadly rounded; elytra narrower, twice as long as wide. Length (Q) 17.5 mm.; Wiptohiet (G0) weve, WncbeyeeaoseoneuGacecncc rhombiceps n. subsp. Body still more elongate than in bicolor and much larger in size, similar in coloration, sculpture and vestiture; head and antenne nearly similar, the first antennal joint longer, bright rufous, the remainder pale brownish, two to four with feeble obscure cloud in part; pro- thorax nearly similar, the sides before the middle feebly oblique and evenly, very moderately arcuate; sinus before the obtuse basal angles rather deep though gradually formed, the angles reflexed; foveze very large and concave, traceable anteriorly very feebly almost to the apex; close punctures moderate, subruguliform, the pubescence abundant, pale and bristling; elytra nearly as in bicolor but rather more elongate, three-fourths (@ ) to four-fifths (co) longer than wide, rather more than twice as wide as the prothorax, similarly with the punctures of the long subscutellar series very much less evident than in Jecontei and related forms. Length (o Q) 19.0- 20.5 mm.; width 6.6-7.0 mm. Florida (Palm Beach). Two EXATMPLESr, wi: home noch R ates eae ee ee obliqua Csy. 13—Form notably narrow, only moderately convex, with color and general sculpture very nearly as in all the preceding species, smaller in size; head distinctly elongate, the eyes well developed and notably AMERICAN CARABOIDEA 231 prominent, at just visibly less than their own length from the base, the base of the head behind them subcircularly rounded; central red spot distinct; punctures somewhat finer basally; pubescence abundant; antenne slender, the first joint bright rufous, two to four piceous, the remainder dark brown, the fourth (co) about four times as long as wide, nearly so (@); prothorax slightly (2), distinctly (o7), longer than wide, widest before the middle, the sides subevenly rounded, becoming gradually sinuate before the basal angles, which are very obtuse though laterally somewhat prominent; punctures fine, rather close, the surface rather dull; fovee large, concave, faintly prolonged anteriorly to beyond the middle; elytra twice as long as wide (co), nearly so (Q ), barely twice as wide as the prothorax, the general form and punctuation as in all the preceding, the striz fine, obscurely punctulate, the subscutellar series distinct; anterior male tarsi asymmetrically dilated though more narrowly than usual, the first joint rather longer than the next two combined. Length (co @) 15.0-15.5 mm.; width 4.9-5.5 mm. California PSAeMIEO),—-DUNN. ..... 5. ove we ce she aats ous californica Mann. A—Similar to californica but less slender and with a relatively some- what smaller prothorax, which is however similar in form, except that the lateral sinus is more shallow, the obtuse angles less prominent laterally; eyes similarly prominent; fourth antennal joint between three and four times as long as wide in both sexes; elytra similar but broader, never quite so much as twice as long as wide, the strie similarly fine. Length (o 2) 15.0-15.8 mm.; width 5.2-5.7 mm. Arizona and Texas...... arizonica n. subsp. Form much more abbreviated, smaller in size, more ventricose, similar 14— in coloration, lustre and sculpture; head only slightly longer than wide, the eyes prominent, at their own length from the base, the base circularly rounded; red central spot similar; antennz shorter, the fourth joint barely three times as long as wide, the coloration as in californica, except that joints two to four are more nearly black; prothorax almost similar in outline but relatively smaller and narrower, barely visibly wider than the head, the evenly rounded sides more gradually and shallowly sinuate basally, the angles not prominent laterally, rounded; elytra very much shorter and re- latively wider, barely three-fifths longer than wide, two and one- half times as wide as the prothorax; striz about twice as coarse and deeper, much less evidently punctulate. Length (2) 14.0 mm.; width 5.0mm. Arizona (Yuma),—Dunn............ infirma Csy. Strial intervals somewhat coarsely, closely and roughly punctate. Form nearly as in janus; head, palpi, antenne, body beneath and legs black; prothorax reddish-yellow, the elytra decidedly bluish; head oval, very broad behind the eyes, somewhat as in janus, coarsely and densely punctate; prothorax as in janus, oval, narrowed behind, broadest in front of the middle; hind angles very obtuse, the surface somewhat densely and coarsely punctate; elytra oval, rather depressed, black, the surface decidedly blue, especially at the sides, striate, the strie distantly punctured; surface sparsely pubescent; under surface more shining, less closely punctate and 232 MEMOIRS ON THE COLEOPTERA more sparsely pubescent. Length18 mm. Arizona. [G. decipiens Form] of etevetet lelstetetet=teleteclelolclete as oe eieieleiche let eeinpeaL © 1G co OnE Strial intervals finely, feebly, rather closely and evenly punctulate as in janus and the other preceding species.....................- 15 15—Body, excepting the ferruginous prothorax above and beneath, black, the elytra without obvious bluish lustre; head large, elongate, four-fifths as wide as the prothorax, the eyes well developed and prominent, the tempora behind them strongly and circularly round- ing to the neck; surface coarsely and closely punctate, the central red spot distinct; antenne rather long and slender, the first four joints black, the remainder paler, brown; palpi black, pale at tip; prothorax fully a fourth longer than wide, widest before the middle, the parallel sides broadly and evenly arcuate, becoming moderately sinuate for a short distance before the obtuse hind angles; fovee rather sharply impressed, and with very feeble extension traceable anteriorly nearly to the apex; surface somewhat coarsely, densely, subrugulosely punctate and with suberect pale pubescence; elytra narrow, twice as long as wide (0), barely or not quite twice as wide as the prothorax, of the usual outline; striz fine, feebly micro- punctulate, the subscutellar series rather finely punctured; anterior male tarsi with the first three joints dilated and very obliquely pro- duced externally, the first barely as long as the next two. Length (o") 17.0-18.0 mm.; width 5.7-5.8 mm. Kansas...... atripes Lec. Body smaller, narrower, but, at the same time, more ventricose, the head and prothorax relatively much smaller; coloration and general sculpture nearly similar; head slightly elongate, only very little narrower than the prothorax, the eyes rather large, very prominent, at their own length from the base, the tempora more converging behind them to the neck than in airipes and much more feebly, evenly arcuate; red spot small and feeble; punctures close, smaller than in aéripes; anterior parts more sparsely and very coarsely punctato-rugose, nearly flat, scarcely biimpressed; antenne nearly as in atripes; prothorax less elongate, smaller, of almost similar outline, but with the parallel sides rather more arcuate, the basal sinus longer and more gradually formed, the angles narrowly blunt, slightly prominent laterally; surface and fovee nearly similar, the thin side margins in the same way sharply and strongly reflexed, the general punctuation less coarse; elytra four-fifths longer than wide, much more than twice as wide as the prothorax and almost four times as long, feebly inflated behind but nearly of the usual outline, the striz fine, the subscutellar series distinct; anterior male tarsi very moderately dilated, the first joint as long as the next two, Length (o‘) 15.5 mm.; width 5.4mm. Texas (Amarillo),—Shantz. melanopus n. sp. 16—Body large, moderately convex, not very slender, dullish in lustre, black, excepting the dark rufo-ferruginous prothorax above and beneath; head but slightly elongate, three-fourths as wide as the prothorax, with very prominent eyes, the tempora very short, circularly rounded to the neck, only two-thirds as long as the eyes; surface coarsely and subrugosely punctate; anterior half broadly AMERICAN CARABOIDEA 233 biimpressed, with a medial cariniform elevation; antenne with the first four joints black, the remaining joints pale brown, more obscure at their tips; prothorax large, barely visibly longer than wide, widest before the middle, with broadly, evenly rounded subparallel sides, becoming parallel near the blunt basal angles; surface coarsely, closely, subrugosely punctate; elytra slightly inflated behind the . middle, fully three-fourths longer than wide, not quite twice as wide as the prothorax; surface with complex sculpture, the fine smooth ridges nine in number, the intervals strongly micro-reticulate, and. along the middle of each, there are two finer close-set carine, separated bya deep groove, which is feebly punctured along the bottom, the space between each of the fine axial ridges and the coarser ridges has very fine and shallow punctures, resembling completely the fine interstitial punctures of janus, bicolor and other more northern species; sterna more coarsely punctured than the abdomen; anterior male tarsi dark ferruginous, strongly asym- metric, the basal joint not as long as the next two. Length (0”) 19.0 mm.; width 6.8 mm. Cuba (Havana),—Baker. [G. insularis Wast.and erythrodera Brul.].:. 2. 2-0-0 eclee saeco *ruficollis Dej. Body much smaller and more slender, deep black and more shining, the legs black, the elytra alutaceous and differing in outline from those of any of the preceding, being elongate-oval and wholly without humeri; head slightly longer than wide, only a little narrower than the prothorax, coarsely but not densely punctate, more sparsely at base; eyes very prominent, at one-half more than their own length from the base, the tempora not very rapidly converging and circularly rounded; rufous spot wanting; medial cariniform line separating the two impressions continuing to the line posteriorly tangent to the eyes; antenne slender, the first four joints black, the remainder piceous; prothorax narrow and very elongate, widest before the middle, the parallel sides broadly, evenly arcuate, very gradually and feebly oblique posteriorly, becoming parallel at base, which is transverse and four-fifths the maximum width; surface subdeplanate laterally, the foveze long, moderately concave; median line broadly, feebly impressed, with a fine axial stria; punctures coarse and rather irregularly close-set; elytra gradually narrowing from the middle to the base, four-fifths longer than wide, twice as wide as the prothorax; sculpture nearly as in ruficollis, except that the two fine axial costules of each interval are finer and feebler, and not separated by a deep groove, and that the space between each of these costular threads and the principal coste, which are very moderate, is very sparsely and obsoletely punctulate; under surface shining; anterior male tarsi black, very asymmetric, the external lobes very oblique. Length (co) 15.0-16.5 mm.; width 4.6—-5.2 mm. ienimus of Panama (Nata)..........30. 0.24.5 *panamensis n. sp. The species just described under the name panamensis, is evi- dently related to mustelina Bates, from Costa Rica, but is very much smaller, mustelina being 18 mm. in length, and the form of 234 MEMOIRS ON THE COLEOPTERA the prothorax ‘‘antice gradatim modice angustato’’ must be quite different, the sides, except at base, in panamensis being parallel and very evenly arcuate from the basal sinus to the apex. The species described above as obliqua, is well distinguished from bicolor, not only by the materially larger size, but by the form of the anterior male tarsi, the third joint being much smaller than the second in bicolor and iowensis, but exactly equal to the third in obligua. Thoracica Chev., from Mexico, is possibly not identical with the West Indian ruficollis (erythrodera), which would render valid the name caseyi, substituted for thoracica Csy., by Leng. Loxopeza Chd. This is another genus in which the joints of the anterior male tarsi are asymmetric, though to a very slight degree when compared with the preceding genus, and in some cases the tarsus must be viewed carefully to recognize the obliquity of the joints at all. Nevertheless, I believe that Loxopeza should be maintained as distinct from Lebia; in Lebia pleuritica and enormis, having appar- ently symmetric tarsi, the peculiar habitus of Loxopeza is repro- duced, and I therefore think that these two species should be regarded as Loxopeza rather than Lebia. The three basal antennal joints and a clearly marked basal node of the fourth are glabrous as in Platynine. The ten species in my collection, which, at any rate, I prefer to record as Loxopeza, may be distinguished readily as follows: Fourth joint of the hind tarsi deeply emarginate...............-.---2 Fourth joint feebly, emarginate:.........--...--+4-- eee 5 2—Head black. Body moderately convex and ventricose, strongly shining, pale rufo-flavate, the head black but with pale epistoma, labrum and mandibles, the elytra bright steel-green, the epipleura and abdomen piceous; head four-fifths as wide as the prothorax, with large and rather prominent eyes, the front finely and feebly rugulose; antenne slender, fusco-testaceous, clearer basally; pro- thorax four-fifths wider than long, widest before the middle, the sides straight basally, the angles more than right but only slightly blunt; surface feebly rugulose, very broadly reflexed and smoother at the sides, the anterior impression obsolete, the posterior straight and deep near the base and through half the width; elytra oblong, a third longer than wide, twice as wide as the prothorax, rapidly narrowing at apex, the external angle of the truncature rounded; strie very deeply and conspicuously impressed, the micro-punctu- lation scarcely discoverable, the seventh and eighth fine and not AMERICAN CARABOIDEA 235 impressed, the intervals notably convex; scutellum pale. Length 7.2mm.; width 3.3 mm. New York (Buffalo)........ tricolor Say Head pale, similar in color to the prothorax, legs and most of the under surface; prothorax widest at about the middle, the sides rounded PMMERICLE VALC HEXEN s ctsiirc ci clo dsi.0 sts < aie a) asatecmvatne MEMES belle ole oe 3 3—Size smaller, the strie fine and feebly impressed, the outer angle of the truncaturerounded. Color rather pale rufo-flavate throughout, excepting the epipleura and abdomen, which are piceous and black respectively, the elytra dark blue; head rather more than three- fourths as wide as the prothorax, with large and prominent eyes; front faintly strigilate near the eyes; antennz slender, blackish, the first three joints testaceous; prothorax four-fifths wider than long, the basal angles obtuse but not rounded; rugule fine and faint; basal channel not very deep; elytra two-fifths longer than wide, twice as wide as the prothorax, gradually arcuately narrowing behind; surface shining, though micro-reticulate, the striz closely micro-punctulate, the third with two widely separated punctures as usual; intervals very nearly flat; tarsi slender, blackish. Length 5.4-6.5 mm.; width 2.6-2.9 mm. New Jersey, Indiana, Illinois : | and Lake Superior (Marquette). Abundant.......atriventris Say Size rather large, the strie deeply impressed, the intervals convex; elytra dark indigo-blue; prothorax relatively wider.............. 4 4—Outer angle of the elytral truncature rounded. Body stout, oblong- suboval, moderately convex, strongly shining, the elytral micro- reticulation fine, very feeble in the male; coloration as in atriventris, except that the abdomen and epipleura are piceous and the tarsi not blackish; head nearly three-fourths as wide as the prothorax, with large and remarkably prominent eyes, the front feebly and unevenly rugulose; antenne slender, half as long as the body, fusco-testaceous, the first three joints paler; prothorax twice as wide as long, the strongly arcuate sides very convergent anteriorly; basal angles rather obtuse, the tips sometimes bluntly subprominent; surface feebly rugulose, smoother in the broad lateral reflexed regions; base broadly pedunculate, the transverse channel along the peduncle rather deep; elytra a little longer in the male, two- fifths longer than wide, four-fifths wider than the prothorax; stricze deeply impressed, with very obscure micro-punctulation; intervals convex, having some feeble scattered punctulation laterally; anterior male tarsi distinctly dilated, the third joint feebly and bluntly channeled above. Length 8.7—9.8 mm.; width 4.1-4.7 mm. New York to northern Illinois and southward to North Carolina. Abun- LD: . 2. 5 Slotgimie.t) Bio Geen eLearn orien ke reo a grandis Hentz A—Similar to’ grandis throughout in coloration and size, the elytra rather more alutaceous, with nearly flat intervals and less deeply impressed strie, which are more evidently micro-punctulate; antenne shorter, less than half as long as the body, the joints much less elongate; scutellum similarly pale. Length (2) 8.5 mm.; width 3.9 mm. Texas (Brownsville),—Wickham. rivularis n. subsp. Outer angle obtuse but rather well defined, not definitely rounded; size 236 MeEmorrRs ON THE COLEOPTERA larger. General form and coloration as in grandis; elytra shining, the micro-reticulation fine and faint; head in form and relative size nearly similar, the large eyes very prominent; surface feebly rugulose, smoother anteriorly; antenne long, very slender, similar in coloration but with more elongate joints; prothorax relatively larger, fully twice as wide as long, general outline and sculpture nearly as in grandis, but with a smooth obtuse elevation extending outwardly from the convex part not quite to the outer limit of the broad lateral reflexion at base, and of which there is barely a trace in grandis; elytra larger and more elongate, three-sevenths longer than wide, four-fifths wider than the prothorax; strie finer but very deeply impressed, not micro-punctulate; intervals strongly convex except laterally, the two outer strize finer and more punctulate as usual; reflexed edges not so diaphanous or pallescent as in grandis; legs long, pale throughout. Length 10.5 mm.; width 4.8 mm. Lake Superior (Marquette),—Sherman............ magister n. sp. - 5-Head| and prothorax pales). 5... ....- =.=] ee Eee eee 6 Headblack, the prothorax pale)... .-... 0.2...) oe eee 9 6—Body stouter in form, the coloration and general habitus almost exactly as in grandis. Elytra of rather more greenish hue than in grandis; head fully three-fourths as wide as the prothorax, finely rugulose, the eyes large and very prominent; antenne long, about half as long as the body, fusco-testaceous, the three basal joints clearer; prothorax four-fifths wider than long, widest at the middle, the sides much rounded and strongly converging anteriorly; surface broadly reflexed at the sides, the convex discal parts finely, closely rugose, the basal peduncle conspicuous, the transverse groove only moderately deep, the median stria deep; elytra nearly a third longer than wide, twice as wide as the prothorax, the outer limit of the sinuate apical truncature rather narrowly rounded; strie deeply impressed, fine, nearly smooth, the intervals moderately convex, densely micro-reticulate; reflexed margins diaphanous and slightly paler; under surface pale, the epipleura and abdomen piceous; tarsi as pale as the tibie. Length 8.5 mm.; width 4.0 mm. Texas. majuscula Chd. Body narrower, much less ventricose and smaller in size........----- 7 7—Elytra with fine micro-punctulate strie and flat intervals, deep indigo-blue and with the side margins finely reflexed and not in the least paler in color. Under surface pale, the epipleura and abdomen black, the former feebly picescent basally; legs pale, the tarsi a little darker; head narrower than in grandis, with less prominent eyes, the front very finely and feebly rugulose, nearly smooth medi- ally; antennz almost half as long as the body, blackish, the three basal joints and basal node of the fourth pale testaceous; prothorax finely and feebly rugulose, three-fourths wider than long, more evenly arcuate at the sides and less narrowed anteriorly than in grandis, the margins only half as widely reflexed; basal peduncle and transverse channel almost similar; scutellum similarly rufous; elytra much narrower, almost one-half longer than wide, fully twice as wide as the prothorax, the apical truncature sinuate, more oblique AMERICAN CARABOIDEA 237 than usual, the subsutural part more posteriorly produced, the elytra divaricate at tip, the outer limit of the truncature broadly rounded; micro-reticulation rather feeble; two punctures at the third stria near basal third and apical fourth; scutellar stria rather long, feeble, parallel and close to the suture. Length 8.0 mm.; width 3.3 mm. New York (near the city)......... enormis n. sp. Elytra with impressed strie and more or less convex intervals, the narrow reflexed side margins abruptly pale testaceous; body + LSP GUE 30 6.8 Golo Breet Cie een ete Goo 40.0.0 Me didi inane 8 8—Elytra blue-black; under surface pale, the epipleura and abdomen more obscure rufous, piceous posteriorly; head finely but strongly rugulose, fully four-fifths as wide as the prothorax, with very prominent eyes; antennz slender, half as long as the body, rufous, somewhat clearer basally; prothorax four-fifths wider than long, in form nearly as in grandis, the rounded sides very converging anteriorly, broadly reflexed, the convex parts rugulose in coarse and somewhat wavy lines; basal peduncle distinct, the transverse groove deep; scutellum small, pale, the margining parts of the strial interval and the basal margin of the elytra also pale; elytra nearly one-half longer than wide, feebly inflated posteriorly, four-fifths wider than the prothorax, the sinuous truncature as usual; strie deeply im- pressed, finely punctulate, the sixth and seventh becoming gradually more approximate basally, the intervals strongly convex; seventh stria slightly, the eighth much, more feebly impressed; legs slender, pale, the tarsi not noticeably darker. Length 6.2 mm.; width 2.8 RaMEMMMMPANUEZ COTE, act < joie, 22) 5)0/,'0.ie lao far'ss ghee a aha oho sueenenanets pimalis n. sp. Elytra brighter steel-blue; under surface, entire legs and epipleura pale testaceous, the abdomen piceous-black; head moderate, in part feebly punctulate or subrugulose, smooth medially, having well developed and very prominent eyes, fully four-fifths as wide as the prothorax; antennz rufous, nearly half as long as the body; pro- thorax much shorter than in the preceding, twice as wide as long, the sides not quite so strongly though widely and more gradually reflexed, strongly rounded, very convergent apically; basal angles feebly subprominent at tip; surface finely rugulose, the basal peduncle and groove almost similar; median stria not impressed as it is in pimalis, and extremely fine; elytra oblong, slightly inflated behind, about a fourth longer than wide, very nearly twice as wide as the prothorax, the feebly sinuate truncature limited externally by broadly rounded angles; strie fine, not evidently micro-punctu- late, rather deeply impressed; intervals distinctly convex, though not quite so strongly as in grandis, much less convex than in pimalis; anterior tarsi of what appears to be the male only a little less slender than those of the female and perfectly symmetric. Length 5.8- 6.0 mm.; width 2.7mm. Arizona (Tucson),—J. F. Tucker. Five ‘SLIT 7G ad Oa ee eS tuckeri n. sp. 9—Body larger, rather ventricose, pale testaceous, the head and elytra black, the latter with pronounced blue lustre; under surface pale, the epipleura rufo-piceous, the abdomen black; legs pale, the tibia distally gradually darker, the tarsi black or nearly so; head 238 MeEmorrs ON THE COLEOPTERA large, just visibly narrower than the prothorax, with very prominent eyes; epistoma and basal part of the neck pale; front finely punctate and rugulose; antennz slender, black, the three basal joints testa- ceous; prothorax three-fourths wider than long, general outline and widely reflexed margins nearly as in grandis; surface finely rugose; basal projection and transverse groove distinct; median stria fine, not impressed, terminating near the apex in a small foveiform dilatation; elytra nearly one-half longer than wide, inflatulate behind, fully twice as wide as the prothorax, the trunca- ture broadly and feebly sinuate; striz fine, very finely, subobsoletely micro-punctulate, slightly impressed (c), scarcely so (2 ); intervals feebly convex to nearly flat; side margins not paler; anterior male tarsi rather thick, with the apex of joints one and two only very slightly oblique. Length 7.2-7.6 mm.; width 3.0-3.35 mm. New Mexico (Santa Fé), Utah (Ureka) and Mexico (Tepehuanes, Durango)! Mhreerexampless. 2: =... 4--- eee atriceps Lec. Body very nearly as in atriceps but much smaller in size, the coloration and rather shining lustre as in that species, but with the tibie pale, the tarsi piceous, the neck black throughout; head not so large, evidently narrower than the prothorax, otherwise similar, the antenne similar in coloration, but rather more slender and with the individual joints notably shorter; prothorax similar, but widest more evidently before the middle and with the sides less widely and more gradually reflexed except at base; basal parts similar, the surface finely rugulose, the median stria nearly similar but feebly impressed, not at all enlarged subapically and entire, attaining the apical margin; elytra two-fifths longer than wide, feebly inflated behind, twice as wide as the prothorax, nearly similar at tip; strie fine, feebly but evidently micro-punctulate, the intervals nearly flat. Length 5.7-6.0 mm.; width 2.5-2.6 mm. Colorado (Boulder Co.). nanulina n. sp. The three species enormis, pimalis and tuckeri are evidently allied to pleuritica Lec., from Lake Superior, which was placed in typical Lebia by Horn, who however at the same time alluded to its strongly suggestive resemblance to Loxopeza. It seems to me that all four of these species should be allied more closely to Loxopeza than to Lebia, notwithstanding the fact that the peculiar anterior male tarsal characters distinguishing Loxepeza have become virtu- ally obsolete. The case is similar to that of Colpodes in the Batesian sense, Mr. Bates, as well as Chaudoir, having assigned many species to Colpodes, in which the peculiar tarsal characters of the latter genus have become very nearly extinct. The species defined above as enormis was sent to me under the name #leuritica Lec., but it differs from the latter, judging by the author’s description, in having no vestige of the pale elytral margins, apparently exactly Nati ap AMERICAN CARABOIDEA 239 like those of pimalis and tuckeri, and in the black antenne; pimalis seems to be allied to the Mexican Loxopeza exarata of Bates and melanocephala Chd.; tuckeri and pimalis are smaller than pleuritica; they are mutually widely distinct species and are probably equally _ distinct from pleuritica, which I have not seen; tuckert must how- ever resemble arizonica Schf., from the Huachuca Mts., very closely, but in tuckeri there are only some extremely minute punc- tules toward the sides of the head, the pronotum is widely reflexed at the sides, the elytral intervals rather conspicuously convex and not flat as in arizonica, and the abdomen is impunctate; the fourth hind tarsal joint is feebly emarginate. Lebia Latr. General habitus of the body, as I have had occasion to refer to in the case of the Pterostichine and Amarine, when considered in a broadly discriminative way, is the most important single structural character which can be adopted as a criterion of classification in large groups, deficient in striking structural modifications of special organs. In fact many differences in special organs, which have generally served as bases of classification, must be regarded as indecisive in the presence of an identical general habitus, and it is for this reason that I believe Loxopeza should include, besides the typical forms, species of the plewritica type, having apparently purely Lebiid tarsi. Coming to Lebia itself, it is quite evident that, as comprehended in our lists, there are two types of general facies and two only; that is those with a prothorax transverse and well reflexed at the sides, recalling Loxopeza though more abbrevi- ated, and those with a more convex, more basally narrowed and laterally only very narrowly reflexed prothorax, as observable in Dianchomena abdominalis; in Aphelogenia the facies is exactly as in typical Lebia, excepting a somewhat different type of elytral ornamentation, and even this is inconstant, as seen in A phelogenia guttula, when compared with the vittate species. Dianchomena miranda, which differ very much in ornamentation from D. ab- dominalis, which I regard as the type of Dianchomena, I have not been able to study, and it is probable that it should not really form part of the genus Dianchomena; scapularis, which was placed in the latter genus by Horn, is a typical Lebdia in its entire physi- 240 MEMOIRS ON THE COLEOPTERA ognomy and especially in the very constant thoracic form of that genus. Adding rhodopus Scz., from description, the following is a tabular statement of all those species of Lebia at present in my collection, which have uniformly black, blue or green elytra, or at least elytra devoid entirely of maculation; they are numerous and but very few of them have been hitherto described. So far as concerns certain subordinate structural characters, this division is probably artificial, but at any rate it is a practical course to pursue in this very difficult genus: Antennz wholly black... ...20...6.- 5.520006 oe ne eer z Antenne not entirely black. ....... ss... 22. & 33 oe 17 2—Pronotum black, with pale lateral margins. Body moderately convex and ventricose, polished; head black, the elytra dark blue; entire under surface and legs piceous-black; head well developed, as wide as the prothorax, the eyes rather large and prominent, the front smooth, faintly strigilate basally; antenne slender, more than half as long as the body; prothorax rather small and short, fully four-fifths wider than long, the sides subparallel, rounding strongly before the middle; apex feebly sinuate; base lobed and transversely grooved medially; surface minutely and feebly rugulose; sides broadly deplanato-reflexed and diaphanously pale, the scutellum piceous; elytra a fourth longer than wide, feebly inflated posteriorly, much more than twice as wide as the prothorax, the sides finely reflexed; striz fine, not impressed, finely, very obsoletely and irregularly subpunctulate; intervals flat, the two discal punctures at the third stria; scutellar stria short. Length 4.0 mm.; width 1.8mm. Mississippi (Vicksburg).............. marginicollis Dej. Pronotum uniform in color throughout its extent, black, bluish or STEENISH, oa vse eestor eke Siseye Ss wasiese aies = ieee © Sc beer 3 3—Head and prothorax deep black, without metallic color, except a feeble trace in truckeensts. .. sce oes eee ee eee es eer 4 Head, prothorax and elytra uniformly bluish, greenish or in part viola- CeOus in COlOE:. Mace adeicssins eco ead wae et aloe 6 4—Elytra black, with the feeblest obscure metallic lustre, polished, the under surface and legs shining, greenish-black. Head slightly nar- rower than the prothorax, with moderate and not very prominent eyes, the tempora rather long; front smooth, with very few fine rugule laterally; at the centre there is a deep foveiform puncture; antenne half as long as the body; prothorax barely three-fourths wider than long, peculiarly narrowed anteriorly, with broadly arcuate sides, parallel in basal half, the angles right; median lobe and sulcus moderate; surface very feebly rugulose; sides rather narrowly reflexed, broadly flat and explanate at base; median stria distinct; elytra oblong, inflated behind, fully a third longer than wide, much more than twice as wide as the prothorax; strie fine, AMERICAN CARABOIDEA 241 nearly smooth, not quite regular, feebly impressed; intervals not quite flat, the two dorsal punctures adjoining the third stria at third and three-fourths. Length 3.8 mm.; width 1.5 mm. Rhode S@eemisiand (Boston Neck)................ 0600s ee eeees cynica n. sp. Ss blue, sometimes with feeble suffused violaceous lustre......... 5 : —Head well developed, not longer than wide, the body moderate in width and convexity, polished; under surface shining and deep black; head barely visibly narrower than the prothorax, with well developed prominent eyes; front rather strongly strigato-rugose throughout the width; antenne more than half as long as the body; prothorax short, barely twice as wide as long, strongly but loosely vermiculato-rugose, widest at the middle, the sides thence oblique basally and broadly rounded and converging anteriorly; sides not very widely reflexed, more widely so at base and with deep shining gutter; basal lobe and sulcus distinct; apex feebly sinuate; basal angles more than right but sharply defined; scutellum black; elytra nearly a third longer than wide, feebly inflated posteriorly, barely twice as wide as the prothorax; strie fine, nearly smooth, very feebly impressed; intervals not quite flat, the punctures as in the preceding; anterior male tarsi narrowly dilated, piceo-rufous. Length 5.0 mm.; width 2.15 mm. California (Hoopa Valley, +. cor hte) Kaltes Co) eae eee ec ane eee a perita n. sp. Head rather well developed and slightly longer than wide, the eyes less prominent than in perita, the front smoother and having scarcely more than a few minute punctures; antenne rather more than half as long as the body; prothorax very short, evidently wider than the head, fully twice as wide as long, widest before the middle but with the sides broadly and feebly rounded, straighter but only slightly converging basally; margins finely reflexed anteriad, rather broadly deplanate at base; median stria fine, feebly impressed; surface finely, feebly and subvermicularly sculptured; elytra a third longer than wide, barely twice as wide as the prothorax, feebly inflated behind; strie rather fine and nearly smooth but deeply impressed, the intervals distinctly convex; two dorsal punctures small, at the same distance from base and apex; the elytra are bright steel-blue, the head and prothorax black, with just perceptible dark greenish lustre. Length 4.4 mm.; width 1.85 mm. Nevada (Reno). A single example, taken by the writer........... truckeensis n. sp. Head rather well developed, though evidently narrower than the pro- thorax, the eyes not quite so large as in perita and distinctly less prominent; front very smooth and polished, with a few feeble rugule near the eyes; antenne not so long as in perita and slightly more slender, scarcely half as long as the body; prothorax not quite twice as wide as long, the sides subparallel to beyond the middle, thence strongly rounding to the apex, subsimilarly reflexed, the gutter not quite so deep or shining; surface nearly smooth; basal lobe and sulcus distinct; elytra narrower, two-fifths longer than wide, only feebly inflated behind, twice as wide as the prothorax; strie very fine, not impressed, feebly micro-undulated; intervals T. L. Casey, Mem. Col. IX, Feb. 1920. F 242 MEMOIRS ON THE COLEOPTERA flat, the dorsal punctures situated as in perita but smaller and feebler; under surface black, without metallic lustre, the legs faintly picescent. Length 4.0 mm.; width 1.85 mm. California (Sta./Banbara)—Dunne. 20... .< 5s. o-. see barbare n. sp. Head smaller and more elongate, the prothorax narrower than in any of the preceding three species, the body much smaller in size, deep black and shining, the elytra violet-blue; under surface deep greenish-black, the legs deep black; head slightly narrower than the prothorax, decidedly elongate, with well developed and moder- ately prominent eyes; front very smooth, with a few strigille near the eyes; antenne slender, only three joints remaining in the type; prothorax two-thirds wider than long, widest before the middle, the sides rather narrowly reflexed and distinctly arcuate anteriorly, more widely deplanate basally, feebly converging and straight from rather before the middle to the slightly obtuse but sharp basal angles; surface with feeble loose subvermiculate sculpture; basal lobe and furrow and median stria distinct; elytra a third longer than wide, slightly wider posteriorly, twice as wide as the prothorax; strie fine, feebly micro-subpunctulate, the intervals very nearly flat. Length 3.75 mm.; width 1.5mm. California (Placer Co.),— Koebele.s. 52 Saeeitiente is oo ous ce castigata n. sp. 6—Elytral strie not or only very feebly impressed...............--- 7 Elytral striae more or less conspicuously impressed..............+-- 16 7—Prothorax relatively small in size and less transverse..........--- 8 Prothorax larger, about as in viridis, more transverse except in magica, moderately reflexed toward the sides, more broadly and deeply in 8—Body much smaller and narrower than in viridis, bluish-green, some- times violaceous on the elytra, shining; under surface and legs polished black; head moderate in size, with large and rather promi- nent eyes, as wide as the prothorax; front smooth; antenne nearly three-fifths as long as the body; prothorax three-fourths wider than long, the sides subparallel, rounding anteriorly, deplanate at the basal angles, which are rather sharply marked and almost right; surface very finely, faintly or obsoletely rugulose; basal lobe and channel distinct, the median stria rather deep, entire; elytra a third longer than wide, more than twice as wide as the prothorax, slightly inflated behind; striae somewhat fine, shallowly subimpressed and slightly irregular, the intervals nearly flat. Length 3.25-3.7 mm.; width 1.35-1.45 mm. Rhode Island (Boston’ Neck) and North G@arolinas(Southempeines) see eee. eee eee adolescens n. sp. Body relatively narrower, more elongate, shining, the anterior parts dark green, the elytra polished violaceous-blue; under surface and legs polished, blackish-green; head fully as long as wide, as wide as the prothorax, with prominent eyes, the surface minutely punctulate and subrugulose, smoother medially; antenne half as long as the body; prothorax three-fourths wider than long, subparallel, rounding at the sides anteriorly and distinctly reflexed, very abruptly deplanate posteriorly; edge just visibly sinuate near the basal angles, which are as usual; surface finely and feebly subrugulose, the anterior yee ——_— AMERICAN CARABOIDEA 243 transverse impression fine and very feeble; basal lobe and channel distinct, the stria fine, abbreviated anteriorly; elytra longer than usual, nearly one-half longer than wide, feebly inflated posteriorly, fully twice as wide as the prothorax; strie extremely fine, unim- pressed, in part subobliterated, the sutural a little stronger; intervals flat. Length 4.0 mm.; width 1.5 mm. New Mexico (Las Vegas); one, taken by Prof. Snow in Kansas, seems identical.. .evoluta n. sp. 9—Antenne somewhat thicker and shorter, less than half as long as the body, the medial joints only about one-half longer than wide; body more minute. Shining, dark blue, somewhat more greenish anteriorly; under surface shining, bluish-black; head fully as long as wide, slightly narrower than the prothorax, with rather large and prominent eyes; surface distinctly though sparsely punctate from side to side, except basally; third antennal joint much longer than the fourth; prothorax very nearly twice as wide as long, sub- parallel, rounded anteriorly; basal angles subprominent; margins abruptly reflexed, narrowly so anteriad, more broadly at base; surface very finely, rather closely rugulose, the basal lobe and sulcus distinct, the stria very fine; elytra between a third and fourth longer than wide, gradually slightly wider behind, the sides rapidly rounding to the apical truncature, twice as wide as the prothorax; strie extremely fine and feeble, the intervals flat. Length 3.65 mm., width 1.4 mm. Rhode Island (Boston Neck). histrica n. sp. Antenne longer and more slender, the joints twice as long as wide or LOBOS 8 04 60.0 SOOO ee Ene COC nooo ce ny a ieee 10 1o—Sides of the prothorax rather broadly and very abruptly reflexed throughout from apex to base, as usual more broadly so basally. Upper surface shining, metallic bluish-green; under surface and femora shining, greenish-black; head not quite as wide as the prothorax, with large and prominent eyes; surface with some minute scattered punctures anteriorly, finely and feebly strigato- rugulose postero-laterad; antenne half as long as the body; pro- thorax four-fifths wider than long, the sides parallel, rounding in apical third, the angles sharp; basal deplaniture flexed upwardly; surface finely rugulose, at base as in the preceding, the median stria fine; elytra a third longer than wide, feebly inflated posteriorly, slightly more than twice as wide as the prothorax; striz very fine and unimpressed but distinct, the intervals flat. Length 4.2 mm.; width 2.0 mm. A single specimen found unlabeled in the Levette collection and probably from Indiana............... bracata n. sp. Sides of the prothorax finely reflexed anteriorly, more broadly at base. . 11 11—Prothorax wider, subequal to half the elytral width............ 12 Prothorax, though very transverse, always much less than half as wide SCM TESMESIGCTiL URS Ayrats ty eure eA hss) Stair csiarnl'c: eaten bh Rte aha EERO ade lee ale « 13 12—Form somewhat elongate, rather shining, deep cobalt-blue through- out above, the under surface and femora blackish-green, the epi- pleura violet-black; head well developed and with very prominent eyes, almost as wide as the prothorax, finely strigilato-rugulose, with some intermingled very minute punctures, smoother centrally; 444 MEMOIRS ON THE COLEOPTERA antenne slender, about half as long as the body, the third and fourth joints long, subequal; prothorax fully four-fifths wider than long, widest at the middle, the sides feebly converging and straight thence basally, broadly rounding anteriorly, the margins abruptly reflexed; surface with somewhat distinct vermiculate rugulosity; anterior impression obsolete, the basal sulcus and lobe conspicuous, the median stria distinctly impressed and rather deep; elytra fully two-fifths longer than wide, feebly inflated behind and scarcely more than twice as wide as the prothorax; strize very fine, not im- pressed, nearly smooth, the intervals flat; abdomen sparsely hairy toward tip. Length 5.5 mm.; width 2.4mm. Missouri (St. Louis). magica n. sp. Form less elongate, blue above, the anterior parts somewhat more greenish; under surface and femora dark greenish, the epipleura purplish-black; head large, with well developed and prominent eyes, though rather evidently narrower than the prothorax, finely rugose, with fine scattered punctures throughout the smoother medial parts; antenne not so slender, compressed, nearly half as long as the body, the third joint somewhat longer than the fourth and much more slender; prothorax larger than usual, fully twice as wide as long, in general outline somewhat as in the preceding, widest at the middle; margins smooth, not quite so abruptly reflexed; surface finely and shallowly though distinctly vermiculato-rugose; angles very sharp, somewhat more than right; basal sulcus and lobe distinct, the stria fine, feebly impressed; anterior transverse im- pression obsolete; elytra barely a third longer than wide, only very feebly inflated posteriad, barely twice as wide as the prothorax; strie fine, somewhat uneven, feebly impressed; intervals not quite flat; scutellar stria short, broadly, obtusely and feebly impressed. Length 5.4 mm.; width 2.22 mm. California (Hoopa Valley, Hiumboldt\Co:)\ pa aeeeides Poise eas shee eee incitata n. sp. Form rather short, shining blue, the anterior parts rather more obscure or greenish; under surface polished, dark blue; legs black, the femora blue; head as wide as long, with prominent eyes, not quite though nearly as wide as the prothorax, the front smooth, minutely, loosely punctulate laterally; antennz nearly half as long as the body; prothorax short, very transverse, twice as wide as long, widest somewhat before the middle, the sides broadly rounded and converging anteriad, slightly converging and straighter basally, becoming very feebly sinuate before the basal angles; latero-basal deplaniture with a small tubercle near the angle; surface nearly smooth, the median stria fine and feebly impressed, not entire; elytra a third longer than wide, gradually arcuately dilated pos- teriorly, only just visibly more than twice as wide as the prothorax; striaz rather fine and nearly even but distinctly more impressed than in viridis, though less so than in smaragdula; abdomen with some very short sparse hairs posteriorly. Length 4.0-4.3 mm.; width 2.0mm. New Mexico (Fort Wingate),—Woodgate. subaffinis n. sp. 13—Prothorax more widely reflexed at the sides, the surface rather AMERICAN CARABOIDEA 245 coarsely and conspicuously, vermicularly rugulose. Moderately narrow and convex, polished, bright brassy-green, the elytra with suffused violaceous-blue reflection, except suturally toward base; under surface and femora with greenish lustre, the tibia and tarsi bldck as usual; head barely visibly narrower than the prothorax, with moderate and not very prominent eyes; front smooth, finely, feebly rugulose laterally; antenne distinctly less than half as long as the body; prothorax three-fourths wider than long, the sides sub- parallel and nearly straight, rounded and converging before the middle; basal angles reflexed; basal lobe and sulcus distinct, the median stria fine; elytra two-fifths longer than wide, gradually inflated behind, more than twice as wide as the prothorax; strie rather fine, very feebly impressed, the intervals scarcely more than flat; dorsal fovez rather strong, near basal third and apical fourth. Length 5.2 mm.; width 2.2 mm. Rhode Island (Boston Neck). vermiculina n. sp. Prothorax more finely reflexed anteriorly, deplanate as usual at the sides of the base, the surface more finely, feebly and closely, subvermicu- BPM UNL OSE) S85 oi cic, Sides eabe saceteudts ete, bavet eter eeteteryay em eisbeod bales» I 14—Eyes very prominent; sides of the prothorax more rounded through- out the length. Body rather ventricose and moderately convex, shining, dark blue throughout above, the under surface and femora shining, greenish; head barely as long as wide, as wide as the pro- thorax, the eyes large and very prominent; surface finely rugulose, smoother medially; antenne slender, about half as long as the body; prothorax three-fourths wider than long, widest at the middle, where the sides are rather strongly rounded, converging and rounded anteriorly, converging but straight basally, the angles minutely prominent at tip, the surface reflexed at the angles; median stria fine, the transverse basal sulcus deep; elytra fully a third longer than wide, feebly inflated posteriorly, distinctly more than twice as wide as the prothorax; striz fine, rather shallow, finely and irregu- larly punctulate; intervals flat, the two dorsal punctures much finer than in the preceding. Length 5.3 mm.; width 2.3 mm. A single example, without indication of locality in the Levette collec- tion, probably taken in Indiana................. prominens n. sp. Eyes less or but moderately prominent, the sides of the prothorax not so rounded, barely visibly converging in about basal half, the basal angles less reflexed than in the two preceding.................- 15 15—Form moderately stout and convex, shining, bright green, sometimes blue or greenish-blue; under surface shining, greenish; head barely visibly narrower than the prothorax, with rather prominent eyes; front with fine punctures and rugulosity, smooth medially; antennz half as long as the body; prothorax three-fourths wider than long, the sides moderately converging and broadly rounded anteriorly; surface rather convex, finely, vermiculately rugulose, the stria fine; basal sulcus deep; elytra a third longer than wide, moderately inflated behind the middle, more than twice as wide as the prothorax; strie rather fine, not distinctly impressed and more or less evidently, finely punctulate, the two dorsal punctures moderate and in the 246 MEMOIRS ON THE COLEOPTERA usual position. Length 3.7-5.0 mm.; width 1.7-2.3 mm. New York (Lake Champlain), Lake Superior (Marquette), New Jersey, Pernnsylvaniavand Kansas... 2.2.5.2 se. - ee eee viridis Say Form slightly narrower than in viridis, shining, obscure blue, the head and prothorax sometimes slightly zneous; under surface and femora very dark blue and shining; head relatively smaller, with more moderate and less prominent eyes, much narrower than the prothorax, feebly rugulose and minutely punctulate, smooth medi- ally; antennz slender, half as long as the body; prothorax very short, fully twice as wide as long, the sides broadly rounded and converging anteriad, feebly converging and nearly straight in about basal half, the angles sharply marked though scarcely prominent; rugulosity confusedly strigilliform, very fine, rather close-set, the median stria fine, feebly impressed, not entire; anterior impression traceable but very close to the margin; elytra relatively longer than in viridis, two-fifths longer than wide, barely more than twice as wide as the prothorax, moderately inflated posteriorly; striz very fine and shallow, not punctulate, the intervals flat. Length 4.0- 4.85 mm.; width 1.9-2.2 mm. Arizona (Tugson),—Tucker. planifera n. sp. Form still narrower, smaller in size, polished, deep cobalt-blue, the anterior parts more greenish, the pronotum at each side discally, and also the elytra, with some violaceous lustre; under surface and femora shining, rather dark but vivid bluish-metallic; head narrow, distinctly elongate, evidently narrower than the prothorax, the eyes moderate in size and convexity; surface smooth, the lateral punc- tules and rugulosity scarcely at all visible; antennz slender, fully half as long as the body; prothorax rather small, four-fifths wider than long, the sides broadly arcuate and moderately converging anteriad, very slightly converging and straight posteriad, the angles slightly prominent at tip; latero-basal deplanation with a small tubercle near the angle; median stria fine but impressed; rugulosity very feeble and not close-set; elytra a third longer than wide, feebly, arcuately inflated posteriorly, distinctly more than twice as wide as the prothorax; striz fine, just visibly impressed, the in- tervals virtually flat; dorsal punctures distinct, near basal and apical third. Length 4.5 mm.; width 1.55 mm. Mexico (Colonia Garcia, Sierra Madre Mts., Chihuahua) ,—Townsend. *cobaltina n. sp. 16—Body rather elongate, moderately convex, shining, pale and bright green throughout above, the under surface black, with greenish lustre; head moderate, with rather large and moderately prominent eyes, about as wide as the prothorax, nearly smooth, the rugulosity laterad very fine and feeble; antenne slender, somewhat more than half as long as the body; prothorax small, two-thirds wider than long, parallel, with somewhat feebly arcuate sides, becoming slightly sinuate near the hind angles, the margins well reflexed; rugulosity fine and feeble; median stria distinct and impressed, finer and obsolescent apically; elytra long, fully two-fifths longer than wide, gradually slightly inflated posteriorly, much more than AMERICAN CARABOIDEA 247 twice as wide as the prothorax; strie not very fine and slightly uneven, the intervals evidently though not strongly convex, the dorsal punctures distinct, near basal third and apical fourth. Length 4.2-4.5 mm.; width 1.8-2.0 mm. Rhode Island, Indiana and MME ONTISLIM) ene ctateicitinci maka, ss dis oes apsiae eee tee smaragdula Dej. Body slightly broader, the head relatively not quite so large, shining, bright green, the anterior parts sometimes subeneous and the elytra partially bluish; under surface with dark bluish-green lustre; head slightly elongate, evidently narrower than the prothorax, with large but only slightly prominent eyes; front minutely, sparsely punctu- late, finely strigilate postero-laterad; antenne half as long as the body, slender; prothorax relatively a little larger than in the pre- ceding and nearly three-fourths wider than long, almost similar in form and sculpture, but with the median line finer; elytra a third longer than wide, oblong, only feebly dilated posteriorly and barely more than twice as wide as the prothorax; strize much less fine than in viridis, feebly impressed and, at least toward the sides, distinctly punctulate; intervals nearly flat; dorsal punctures er A—Similar to papago but with the head, though slightly elongate, 4 scarcely visibly narrower than the prothorax, the latter not quite so transverse; elytra narrower and more elongate, fully two- fifths longer than wide, the strie stronger, more impressed, more punctate and irregular, the intervals feebly convex and more strongly micro-reticulate than usual; abdomen similarly with very small sparse hairs. Length 4.0 mm.; width 1.8 mm. Ari- zona (the locality unrecorded, but probably from near the southern “TGA ok See eee ene ET trajecta n. subsp. _ Body narrower than in either of the preceding species or in trajecta, very shining and deep cobalt-blue above, the head and pronotum more greenish; under surface with obscure bluish-green lustre; head slightly elongate, with large and prominent eyes, fully as wide as _the prothorax, nearly smooth; antennz slender, fully half as long as the body; prothorax small, two-thirds wider than long, the sides a little more converging before and behind the middle than in either smaragdula or papago, similarly reflexed; rugulosity extremely fine and faint, the median stria fine; elytra two-fifths longer than wide, evidently inflated posteriorly, much more than twice as wide as the prothorax; striz not very fine, irregularly subpunctulate and distinctly impressed; intervals very obviously convex, the dorsal punctures moderate. Length 3.8 mm.; width 1.65 mm. Minne- SRM MMUPTETIINEID) ere ce a neni. «ss e+ aha whi eaten a eee duluthiana n. sp. 17—Antenne black, with the third joint pale; legs piceous to flavate.. .18 Antenne black; joints one, or one to three, paler.................. 24 BETA IMOGELALC IN SIZES. oe ee ce cee mcs ce cecwe sce seeseans 19 rat gta esta ig ee eacd eee Men 2kb > OC ennIn ae ae a 20 19—Head and prothorax subopaque, greenish or bluish black, the elytra shining, blue or greenish-blue; head large, wider than the prothorax; antennz more than half as long as the body, the outer 248 MEMOIRS ON. THE COLEOPTERA joints stout, the third and base of the fourth testaceous; prothorax small, very little rounded at the sides, subsinuate before the basal angles, but feebly sculptured; elytra feebly alutaceous; strie very fine, the intervals subconvex; legs bright rufo-testaceous, the tarsi blackish. Length 4.5 mm. Florida (Tampa). Characters quoted from the original description...................... thodopus Scz. Head and prothorax moderately shining, black, slightly bronzed, the elytra black, with feebly subeneous lustre, strongly shining; under surface black, the epipleura piceous, the legs brownish-flavate; head rather elongate, barely as wide as the prothorax, the eyes moderate in size and prominence, the tempora not very rapidly converging to the neck; surface micro-reticulate, feebly rugulose, smoother centrally; antennz distinctly more than half as long as the body, not very slender, the third joint and base of the fourth testaceous; prothorax small, one-half wider than long, parallel, the sides rather feebly, subevenly arcuate and somewhat narrowly reflexed, feebly sinuate at the rather sharp and subprominent basal angles; latero- basal deplaniture narrower than usual; surface finely, sparsely punctulate and subrugulose, the median line rather broadly im- pressed; elytra two-fifths longer than wide, feebly inflated behind the middle, nearly two and one-half times as wide as the prothorax; strie not very fine, widely and rather deeply impressed, the intervals distinctly convex; dorsal punctures rather small. Length 4.2 mm.; width 1.9 mm. _ District of Columbia.............. tertiaria n. sp. 20—Elytral striz distinctly impressed........... +. Jase 21 Elytral striz very fine, not at all impressed..................----- 22 21—Antenne notably elongate, much more than half as long as the body, shining, deep black, the pronotum subopaque; under surface very shining, black, the epipleura piceous, the legs pale flavate, with very slender blackish tarsi; head slightly elongate, equal in width to the prothorax, the eyes very moderate in size and promi- nence, the tempora rather long, the front nearly smooth, convex; antenne black, the third joint and base of the fourth testaceous; prothorax small, one-half wider than long, parallel, the sides very moderately arcuate and very finely reflexed, gradually feebly and broadly sinuate posteriorly, the angles sharp; latero-basal deplani- ture abrupt and triangular; surface minutely and feebly punctulate, the median stria fine, subentire; elytra a third longer than wide, gradually arcuately inflated behind, much more than twice as wide as the prothorax; strie rather fine, irregular, impressed, the intervals evidently convex. Length 3.3 mm.; width 1.4 mm. Louisiana (Allexamdiital SPR rvs sccis ce sisianerars us cae ee ie ludoviciana n. sp. Antenne similarly slender and moderately compressed, but not quite so long, only a little more than half as long as the body, the pale third joint shorter; coloration nearly as in the preceding, the upper surface more zneous and the under surface and legs piceous; head as wide as the prothorax, sometimes apparently a little wider, rather elongate, rhomboidal, the eyes not Jarge and moderately prominent; surface nearly smooth; prothorax small, one-half wider than long, nearly as in the preceding, less opaque, the latero-basal | AMERICAN CARABOIDEA 249 deplaniture not so abrupt and merging gradually into the reflexed margins; elytra between a fourth and third longer than wide, moderately inflated posteriorly, two and one-half times as wide as the prothorax; strie finer, more regular, less impressed, the intervals just visibly convex, less so that in the preceding; tarsi very slender, the fourth joint similarly narrowly bilobed. Length 2.45-3.0 mm.; width 1.1-1.35 mm. Rhode Island and Pennsylvania (near Phila- MERU) RRM ce eee Sea ei ey teva! w ce aAbysy sas -acays. cetera a ese Geis era pumila Dej. 22—Elytra quadrate, barely perceptibly longer than wide. Body ventricose, moderately convex, deep black, the elytra polished, with very feeble greenish lustre, the anterior parts feebly alutaceous and without trace of metallic lustre; under surface shining, black, the legs very pale brownish-flavate, the tarsi darker and very slender; head rhomboidal, with rather prominent but very moderate eyes, the surface convex and nearly smooth; antennz somewhat slender, more than half as long as the body, the pale third joint notably elongate, relatively longer than in pumila; prothorax small, in almost every respect as in pumila, the transverse basal sulcus angu- late at the middle, the impressed stria extending from the angle to the obsolescent transverse anterior impression; elytra scarcely at all inflated posteriorly, with the sides broadly arcuate, much more than twice as wide as the prothorax; strie moderately fine, some- what irregular, the intervals virtually flat. Length 2.8 mm.; width 1.25 mm. North Carolina (Southern Pines),—Manee. quadrata n. sp. Elytra elongate, a fourth to third longer than wide................. 23 23—Antenne longer, slender, scarcely at all compressed, more than half as long as the body, the latter shining, black, faintly subeneous, the anterior parts not distinctly alutaceous; under surface black, the legs piceous; head rhomboidal, equal in width to the prothorax, the eyes prominent but rather small, only slightly longer than the gradually converging tempora behind them; third antennal joint piceo-testaceous; front nearly smooth; anterior superciliary punc- ture notably large; prothorax almost as in the preceding species, but with the anterior transverse impression more distinct, angulate at the middle, the median stria—extending thence to the angulation of the basal sulcus—rather deeply impressed; elytra a third longer than wide, gradually arcuately subinflated posteriorly, much more than twice as wide as the prothorax, the color faintly picescent; strie extremely fine and feeble, in part almost obliterated, the intervals flat; dorsal punctures small. Length 3.0 mm.; width feesemim. Northern Illinois... .....< 00 6 eda. 6 cise aes illini n. sp. Antenne shorter, scarcely half as long as the body and very stout, only feebly compressed; body black, the anterior parts feebly alutaceous, the elytra shining and very feebly subeneous; under surface black, with faintly picescent epipleura; legs dark piceous; head rhom- boidal, with rather prominent though very moderate eyes, which are scarcely longer than the tempora, not quite as wide as the pro- thorax; surface strongly micro-reticulate, the anterior superciliary puncture rather large; third antennal joint pale flavo-testaceous; 250 MEMOIRS ON THE COLEOPTERA prothorax somewhat shorter than usual in this section, rather more than one-half wider than long, the parallel and feebly arcuate sides becoming broadly and rather deeply sinuate basally, the angles sharp and prominent, the other characters as in quadrata; elytra a fourth longer than wide, widest and with the sides more arcuate near apical third, much more than twice as wide as the prothorax; strie very fine, sometimes barely visible, the intervals flat; dorsal punctures fine. Length 3.2 mm.; width 1.3 mm. Lake Superior (Bayfield, Wisconsin),—Wickham.................. frugalis n. sp. 24—Under surface and legs in great part pale...................... 25 Under surface and legs black or nearly so, the prosternum sometimes red invCyanipenmis. oo. caeeee acess cess he ose 5s ie 27 25—Thoracic sides with a short deep abrupt sinus before the basal angles, the sides of the base oblique and rounded. Polished, the head obscure green, the prothorax rufous, the elytra bright green; under surface pale testaceous, the epipleura black; femora testa- ceous, blackish at apex; tibiz more obscure, rufous, the tips and the tarsi blackish; head four-fifths as wide as the prothorax, with large and somewhat prominent eyes and short, strongly converging tempora, the front finely, feebly punctulate and rugulose, smooth medially; antenne slender, somewhat more than half as long as the body, the first three joints testaceous, the remainder black; prothorax two-thirds wider than long; the sides evenly, subcircularly rounded to the basal sinus and rather widely reflexed; basal lobe and impression well marked; surface finely, feebly and not closely rugulose, the median stria fine, feebly impressed; elytra oblong, feebly inflated behind, slightly over a third longer than wide, barely twice as wide as the prothorax; strie feeble, composed of unim- pressed series of small punctures; intervals flat, the two dorsal punctures remotely separated and moderate; tarsi notably stout. Length 5.5 mm.; width 2.6 mm. Indiana.......... abrupta n. sp. Thoracic sides not sinuate at the basal angles, which however are minutely prominent as a rule; prothorax much shorter and more transverse, the base transverse at the sides............. 0.0.0 eee eeeeeeeee 26 26—Coloration and lustre nearly as in the preceding; head but little more than three-fourths as wide as the prothorax, the eyes promi- nent, nearly as in abrupta, the front finely punctulate, smooth medially; antenne similarly long, the first two joints pale testaceous, the third not quite so pale, the remainder black; prothorax shorter, very nearly twice as wide as long, the sides subevenly rounded and well reflexed, straighter basally, gradually more widely reflexed from apex to base; basal lobe strong, the sulcus deep, the surface finely and more closely rugulose, the median stria very fine; elytra narrower, two-fifths longer than wide, fully twice as wide as the prothorax, rather rapidly arcuately narrowed apically; strie very fine and feeble, less distinctly punctured than in the preceding, the flat intervals less evidently micro-reticulate, the dorsal punctures similar; tarsi more slender. Length 5.0-5.8 mm.; width 2.5 mm. Rhode Island (Boston Neck) to Indiana..........viridipennis Dej. A—Similar in almost every way to viridipennis but with the pro- ; 5 AMERICAN CARABOIDEA 251 thorax even shorter, twice as wide as long, differing in that the front has, besides the small punctures, two deep elongate approxi- mate and anteriorly somewhat diverging fovee on a line through the middle of the eyes; antennz with the first three joints pale flavo-testaceous; elytra still more shining, bluish-green; tarsi slender. Length (o’) 5.7 mm.; width 2.5mm. Iowa (Keokuk). frontalis n. subsp. Coloration differing somewhat, the head black; prothorax pale testa- ceous, the elytra having strong bluish-violaceous lustre and very shining; under surface and legs nearly as in viridipennis; body narrower; head finely, sparsely punctulate laterally, smooth medi- ally, nearly four-fifths as wide as the prothorax, the eyes well developed and very prominent; antenne slender, black, the first joint testaceous, the second piceous; prothorax four-fifths wider than long, widest somewhat before the middle, the sides rounded, oblique and straight basally, strongly reflexed; basal lobe and sulcus conspicuous, the median stria extremely fine; rugulosity very fine, not close-set; elytra fully two-fifths longer than wide, not quite twice as wide as the prothorax; strie extremely fine and subobliterated, the serial punctures fine and feeble; intervals flat; sutural stria distinct apically; tarsi rather thick, the posterior long and slender. Length 5.5 mm.; width 2.35 mm. Rhode Island oo Sit NGOS Rae ener A recdaseree rhodeana n. sp. 27—Form rather stout and feebly convex, polished, deep black, the elytra violaceous-blue, the prothorax frequently red throughout above and beneath; under surface and legs black; head not as long as wide, with very prominent eyes, nearly four-fifths as wide as the prothorax, the front sparsely and irregularly punctulate and subrugulose; antennz slender, more than half as long as the body, black, the two basal joints piceous to nearly black; prothorax short, fully twice as wide as long (@ ), a little less (co), widest before the middle, the moderately arcuate sides broadly reflexed, straight basally, the angles sharply marked but not prominent; surface distinctly but not densely rugulose, the fine median stria impressed; elytra a third longer than wide, only slightly inflated behind, dis- tinctly less than twice as wide as the prothorax; strie fine, feebly subpunctulate, the intervals flat, the dorsal punctures small, near anterior and posterior third. Length 5.7-6.2 mm.; width 2.5—-2.65 mm. California (Los Angeles and San Diego) and Arizona. [L. LS LLG Rescues eke eee er eens Cb. ob.6 cyanipennis Dej. Form more abbreviated, much smaller in size, rather shining, deep black, the elytra with very obscure greenish lustre; under surface black, the legs testaceo-piceous; head fully as long as wide, rather more than three-fourths as wide as the prothorax, with moderate though prominent eyes; front with sparse but distinct punctures; antenne not very slender, somewhat more than half as long as the body, black, the first two joints dark rufous; prothorax three- fourths to four-fifths wider than long, widest before the middle, the sides strongly rounded and narrowly reflexed, broadly so at the slightly prominent reflexed basal angles, before which there is a 252 MEMOIRS ON THE COLEOPTERA moderate sinus; surface sparsely, finely punctulate and also with © slight rugulosity, the median line fine; elytra a fourth longer than wide, only feebly dilated behind, distinctly less than twice as wide as the prothorax; strie very fine, not distinctly punctulate; inter- vals flat, with remote and very minute punctulation, the dorsal punctures at basal, and behind apical, third. Length 4,6-5.0 mm.; width 2.2 mm. California (Lake Tahoe). Three examples. tahoensis n. sp. The entirely red or black prothorax of cyanipennis Dej., is analogous to a character well known in the longicorn Hapalosaha sphericollis Say. Lebia ruficollis, of LeConte, does not differ from typical cyanipennis in any character whatever, except the red pro- thorax, and I have examples with both red and black prothorax apparently taken together near Los Angeles; sex seems to have nothing to do with this remarkable dichromatism and there is undoubtedly but one species involved. Lebia mesta Lec. (L. Sup. Pp. 203), is a species evidently different from viridis; it is black, with subeneous lustre, the anterior thoracic impression deep, and the head is longer and narrower than in viridis; masta Lec., and rhodopus Scz., are inscribed as varieties of viridis in the Henshaw list, but they are both fully valid species. The species described above under the name ¢#ertiaria is evidently closely allied to maculi- cornis Lec., from Georgia, which has been erroneously suppressed as a race of pumila; it is a much larger species than pumila and I could not fail to identify it as maculicornis, if it were not that the author describes the elytra as obscurely viridescent and finely striate; in fertiaria there is no trace of viridescence and the elytral strie are notably deep; perhaps, however, a conservative course would be to reinstate maculicornis as a fully valid species, with tertiaria as a subspecies. Rhodopus Scz., is also a species closely allied to maculicornis. The following list comprises all the non-vittate species of Lebia, having maculate elytra, that are in my collection at present; in some cases, such as guttula, they belong to the inadmissible genus A phelogenia of Chaudoir. Elytra dark blue, crossed before the middle by a broad rufo-flavate fascia, which is emarginate at the suture both before and behind, the apex also rufo-flavate from side to side; head blue-black, the prothorax rufo-flavate; under surface and legs very pale, the tarsi darker, the head black and finely punctate throughout; prothorax AMERICAN CARABOIDEA 253 three-fifths wider than long, much wider than the head; elytral strie very fine, the intervals perfectly flat. Length 5.2-5.8 mm.; width 2.4-2.7 mm. New Jersey and Indiana...... pulchella Dej. ra never having a trace of metallic coloration; maculation more MEPEMICSG TASCIUOLM |) 2 5 es he eee ee eee ence twee 2 Head with deeply strigilliform sculpture throughout.............. 3 ead in great part smooth or sparsely punctured..................- 4 —Form moderately stout, rather convex, shining; head black; pro- thorax pale testaceous, the elytra black, flavate at the sides in anterior half, this area extending obliquely inward with recurved lobiform tip reaching the first stria and with posterior limit well behind the middle; apex transversely flavate, connected with the anterior flavate area by a narrow pale side margin; humeral black area quadrate; under surface and legs throughout pale, the head black, the abdomen brownish at tip; head large, with very promi- nent eyes, almost as wide as the prothorax; antennz slender, fuscous, the three and one-half basal joints pale; prothorax nearly twice as wide as long, finely, strongly rugulose, broadly reflexed at the sides; elytra between a third and fourth longer than wide, gradually dilated behind, scarcely twice as wide as the prothorax, the striz deeply impressed with convex intervals. Length 5.5 mm.; width 2.35 mm. Texas (Brownsville),—Wickham...anchora Chev. orm rather stout, shining, the size very variable; coloration as in the preceding, except that the flavate antero-lateral area of the elytra is smaller, not extending quite to the middle of the length, extending basally in similar manner to the fourth stria, but with the oblique inner prolongation small, extending inward to the second stria and posteriorly to about the middle, the flavate area having a fuscous spot at the humerus, the margin finely flavate posteriorly to the transverse apical flavate area; head not quite so large as in anchora, with very prominent eyes, slightly narrower than the prothorax; antenne similarly colored, very slender; prothorax twice as wide as long, moderately rounded and broadly reflexed at the sides; median stria very fine, usually a little deeper at apex; surface finely, closely and strongly rugulose; elytra fully a third longer than wide, otherwise nearly as in anchora. Length 4.4-6.0 mm.; width 1.9-2.8 mm. Indiana and Mississippi (Vicksburg). Twelve EE SLETS 2 pedo Gane ee eae ape ee a At a appendiculata Chd. Form not quite so stout and sensibly smaller, though similarly varying greatly in size, similar in general coloration, except that the elytra are more completely black, there being a narrow flavate spot in- volving the fifth and sixth intervals from base to slightly behind basal fourth, and sometimes almost obsolete—marginella; lateral margins always finely flavate throughout the length, the apical flavate fascia slightly dilated inwardly; head with remarkably large and prominent eyes, barely narrower than the prothorax; antenne slender, fuscous, the first three and one-half to four joints pale flavate; prothorax four-fifths wider than long, pale testaceous as in the two preceding and similarly rounded and broadly reflexed at the sides; rugulosity fine, close-set; median stria very fine, often i ie eee ae 2. 2 oe ie 254 MEMOIRS ON THE COLEOPTERA foveiform at apex; elytra nearly a third longer than wide, wider posteriorly as usual, twice as wide as the prothorax; strie fine, distinctly impressed except apically, the seventh extremely fine and unimpressed or obsolete as in the two preceding, the intervals moderately convex, flatter toward apex. Length 4.3-5.8 mm.; width 1.75-2.6 mm. Wisconsin, Indiana, Mississippi and Louisiana. Abundant. [Zs 7narsmmellaWey.|). 2... eee analis Dej. 4—Head with fine but deep sparse punctures. Body very small in size, shining, piceous, the head black; prothorax with pale side margins; elytra each with an irregular discal pale spot, somewhat oblique and before the middle, the tips pale, more broadly so internally; under surface and legs pale, the head dark; head four-fifths as wide as the prothorax, with rather large and prominent eyes, the tempora moderately converging; antenne fuscous, clearer basally, half as long as the body; prothorax three-fifths wider than long, widest before the middle, with very moderately rounded and widely reflexed sides, briefly and feebly sinuate at the distinct hind angles; rugu- losity fine, sparse and inconspicuous; median line distinct but not attaining the apex; elytra one-half longer than wide, two-thirds wider than the prothorax, parallel, rounding at the sides apically; strie relatively rather coarse, irregularly subpunctate, the intervals feebly convex, perfectly flat apically, where the strie become very fine. Length 3.0 mm.; width 1.5 mm. Virginia..... lobulata Lec. Head not at all punctured, smooth, sometimes slightly rugulose later- Alls. 6 5 6.553. eee amber ans 2610s. 6103 & oe 5 5—Head small, elongate, about two-thirds as wide as the prothorax.. .6 Head larger, not elongate and with more prominent eyes..........--- 7 6—Body not stout, moderately convex, shining, black, the prothorax more piceous, with the broadly reflexed margins pale; elytra each with a discal pale spot before the middle, never attaining the sides or base, and a smaller rounded pale spot near apex and adjoining the first stria; under surface and legs pale, the prosternum and abdomen piceous; head nearly smooth throughout, the eyes only moderately prominent, the anterior superciliary puncture notably large; antennz slender, rather more than half as long as the body, fuscous, the first three joints paler; prothorax two-thirds wider than long, widest before the middle, the sides moderately arcuate, straight basally, the angles minutely and bluntly subprominent; surface nearly smooth, the rugule fine, sparse and faint; median line fine, impressed, not extending anteriorly beyond the angle of the fine and feeble transverse impression; elytra fully a third longer than wide, gradually inflated posteriorly, barely twice as wide as the prothorax; striz coarsely impressed, uneven or feebly punctate; intervals moderately convex. Length 4.0-5.0 mm.; width 1.7-2.0 mm. Rhode Island to Indiana. Abundant. [Z. Prizida \ChAs) kad oak eectverbereratins oeo.we- eke ed ee ornata Say Body broader than in ornata and with much more developed pale elytral macule, shining; head black, the prothorax pale flavo-testaceous, with a median piceous cloud, the elytra black, each with a very large inwardly inflated spot extending slightly behind the middle, AMERICAN CARABOIDEA 255 gradually attenuated to the base and reaching the side margin in second fourth of the length; side margins finely pale as in ornata and extending to the transverse apical fascia, which is abruptly enlarged toward the suture, the large anterior ‘pale area extending to and along the first stria;. under surface and legs evenly very pale flavo-testaceous throughout, the head black; head nearly smooth, almost three-fourths as wide as the prothorax, with large but only moderately prominent eyes; antenne much more than half as long as the body, fuscous, gradually paler basally; prothorax almost as in ornata but shorter and broader, very nearly twice as wide as long; elytra barely over a fourth longer than wide, more parallel and less posteriorly inflated than in ornata, distinctly less than twice as wide as the prothorax, the striation nearly as in ornata. Length 4.8 mm.; width 2.1 mm. New York............... reperta n. sp. 7—Apical pale fascia of the elytra widest suturally.................- 8 Apical pale fascia widest outside of the middle of the width......... II 9 Anterior pale spots extending behind the middle of the length. Sub- > pital RERTONESS Sapa epee nO nOm rE eo Ub Ooc odd oo Ceca dcop oue 10 9—Prothorax short, twice as wide as long, very shining throughout; head deep black above and below; prothorax pale brownish-flavate, feebly clouded centrally, the elytra piceous-black, with narrow pale side margins as usual in this section, each with an anterior spot in the form of an inverted comma, extending from the middle and, in attenuated form, attaining the middle of the base, extending in- ternally to the second stria and, externally, united for a short distance with the lateral margin; apical fascia broad in more than inner half, thence narrow to the pale margin; under surface and legs very pale; head smooth and polished, with the anterior super- ciliary puncture conspicuous, not quite four-fifths as wide as the prothorax, with very prominent eyes; antennz half as long as the body, pale and uniform testaceous throughout; prothorax widest before the middle, with rather strongly rounded and widely reflexed sides, becoming feebly sinuate before the sharp angles; surface nearly smooth, the fine sparse rugule scarcely discoverable, the stria fine, not entire; elytra a third longer than wide, inflated pos- teriorly, not quite twice as wide as the prothorax, the striz coarsely impressed and punctate, fine, feeble and smooth apically, the intervals as in ornata. Length 3.6 mm.; width 1.5 mm. Virginia. virginica n. sp. A—Nearly as in virginica throughout, except that the antenne are slightly more elongate, the prothorax still a trifle shorter and more transverse, the anterior discal pale spot of the elytra not prolonged to the base—or posteriorly quite to the middle of the length—attaining the first stria and, externally, separated from the pale margin by nearly two intervals, the inner enlargement of the fine apical fascia small and quadrate. Length 4.0 mm.; 256 MEMOIRS ON THE COLEOPTERA width 1.6 mm. North Carolina (Asheville). A single example, . taken by the writer as in the case of virginica. ashevillensis n. subsp. Prothorax much less abbreviated and only two-thirds wider than long; lustre shining; color deep black, the pronotum piceous-black, with abrupt pale and broadly reflexed margins; elytra black, marked with pale areas almost exactly as in virginica; legs pale, the pro- sternum piceous and the head black; head four-fifths as wide as the prothorax, with well developed prominent eyes, the surface smooth, the anterior superciliary puncture very large; antenne pale testaceous throughout, more than half as long as the body and much more slender than in virginica; prothorax in general outline and sculpture nearly similar, much less transverse and with the fine rugulosity more visible; elytra fully a third longer than wide, gradually very moderately inflated behind, less than twice as wide as the prothorax, the striation nearly as in the two preceding; two dorsal punctures adjoining as usual the third stria and at basal third and apical fourth; epipleura very pale as in virginica and ashevillensis. Length 3.9-4.2 mm.; width 1.5-1.6 mm. Mississippi (Vicksburg) and Illinois. Five examples.......... fluviatilis n. sp. 10o—Form rather narrow and elongate, shining, the head rufo-piceous; prothorax pale flavate throughout, the elytra black, each with a large oblique flavate spot well separated from the base, lobularly prolonged internally to well behind the middle, extending internally to the first stria and, externally, separated as a rule from the pale margin by about the width of an interval, rarely uniting with the side margin for some distance; apical pale fascia broadened in about inner half; under surface and legs, excepting the head, very pale; head large, only very little narrower than the prothorax, with large and very prominent eyes; surface smooth; antennz rather more than half as long as the body, pale testaceous; prothorax four- fifths as wide as the elytra, widest before the middle; sides rath strongly rounded, broadly reflexed, becoming straight basally, the angles minutely and acutely prominent; rugule fine, faint and not dense, the stria fine, more or less impressed; elytra two-fifths longer than wide, gradually feebly inflated behind, a little less than twice as wide as the prothorax, the strie impressed, subpunctate, finer and smoother apically, the seventh obsolete as usual. Length 4.7-5.0 mm.; width 1.8-2.1 mm. Texas (Brownsville),—Wickham. Seven SPECIMENS apy cts eraes sie ree teuers es spelese 61 Gosnete serpentina n. sp. Form still more slender, smaller in size, shining; head black, the pro- thorax and elytra pale flavate, the latter black in a small angulate scutellar spot and a transverse fascia behind the middle, which is not wider suturally than the inner part of the apical fascia and connected with the scutellar spot by a fine vitta along the first interval; lateral margins along the ends of the fascia pale, no other dark markings visible; under surface as in the preceding; head smaller than in the preceding, though with equally prominent eyes, five-sixths as wide as the prothorax, smooth; antenne much more than half as long as the body, fusco-testaceous, clearer basally; AMERICAN CARABOIDEA 257 prothorax throughout nearly as in the preceding but not quite so large; elytra two-fifths longer than wide, feebly inflated posteriorly, nearly twice as wide as the prothorax; striae smoother, finer and not quite so impressed as in the preceding. Length 4.2 mm.; width 1.65 mm. Texas (Brownsville),—Wickham. Two examples. esurialis n. sp. 11—Apical pale area of the elytra usually not joining the anterior pale areas; body much larger in size. Atlantic regions.............. 12 Apical pale area usually joining the anterior—less certainly in metuens; body much smaller in size. Pacific and Sonoran regions....... 14 12—Anterior pale spots of the elytra separated from the apical fascia by a very broad black fascia. Body moderate in size and convexity, rather shining, black, the pronotum rather less deeply and with the broadly reflexed margins abruptly pale; elytra each with a broad comma-like pale spot, from the middle, attenuate and even- escent at base, extending internally to the first stria and separated from the sides by about two black intervals, the scutellar black area transversely subquadrate; pale sides limited to the reflexed margin; pale apical fascia well developed; head nearly as wide as the pro- thorax, with moderate but very prominent eyes; surface smooth, very finely and faintly subrugulose near the eyes; antenne slender, fully half as long as the body, pale testaceous throughout; pro- thorax moderate, not quite though nearly twice as wide as long, the sides broadly rounded, the hind angles minutely and bluntly subprominent; rugulosity usually distinct; median line fine, at- taining the apical margin; elytra a fourth to third longer than wide, oblong, barely inflated behind, twice as wide as the pro- thorax, with fine, smooth and slightly impressed striz, the intervals evidently convex; dorsal punctures at basal and apical fourth, they being unusually widely separated; under surface and legs pale. Length 4.3-5.0 mm.; width 2.0-2.2 mm. Lake Superior (Marquette) and Rhode Island (Boston Neck). Four examples. canonica n. sp. Anterior pale spots very narrowly separated from the broad apical pale } fascia, sometimes connected as in the typical fuscata............ 13 13—Body of comparatively large size, moderately convex, shining, the pronotum less so, black, the pronotum pale at the sides in some- what more than the broadly reflexed margins; elytra each with a large basally narrowed spot, extending from behind the middle to the base, attaining the first stria internally and separated from the fine pale margin by about two dark intervals, the apex broadly pale, this area suturally emarginate, and separated very narrowly and imperfectly from the anterior spots, the submarginal black vitta attaining apical fourth; under surface and legs pale; head four-fifths as wide as the prothorax, with large and very prominent eyes, the surface smooth; antenne slender, not quite half as long as the body, pale brownish-testaceous, clearer basally; prothorax fully twice as wide as long, the rounded and broadly reflexed sides very converging at apex, the hind angles sharply marked; rugulosity T. L. Casey, Mem. Col. IX, Feb. 1920. 258 MEMOIRS ON THE COLEOPTERA fine and not dense but distinct, the median stria fine; elytra about a third longer than wide, gradually and distinctly inflated behind, barely twice as wide as the prothorax, the strie rather fine but evidently punctate, impressed, the intervals broadly convex; dorsal punctures a little behind basal, and before apical, fourth. Length 6.2 mm.; width 2.7mm. Illinois................... fuscata Dej. Body not quite so large, relatively broader, rather convex, shining; head rufo-testaceous, the pronotum a little paler; elytra black, each with a large oval spot extending from behind the middle to basal sixth or seventh, internally to the first stria and, externally, separated from the pale margin by a vitta of about two intervals, extending to the apical fascia, which is broad, emarginate on the suture and narrowly but clearly separated from the anterior spots; under surface and legs pale; head five-sixths as wide as the pro- thorax, with large and very prominent eyes; surface nearly smooth, usually with two small approximate fovee on a transverse line through the anterior part of the eyes; antenne not very slender, shorter than in the preceding, less than half as long as the body and pale flavo-testaceous in color; prothorax fully twice as wide as long, the rounded and well reflexed sides very converging apically, the hind angles rather blunt at tip; rugulosity rather fine, not dense; median stria fine but deep, entire; elytra only about a fifth longer than wide, gradually and distinctly inflated behind, evidently less than twice as wide as the prothorax, the striez impressed, nearly smooth, the intervals somewhat strongly convex; dorsal punctures very small, at basal third and apical fourth. Length 5.0-5.5 mm.; width 2.5-2.65 mm. Texas (Brownsville),—Wickham. thodope Bates 14—Apical pale areas of the elytra separated narrowly from the anterior pale areas, or else joining by a very narrow isthmus; body smaller in size. Shining, black, the pronotum piceous to black, with the moderately reflexed margins abruptly pale; elytra pale, with a narrow scutellar area connected along the suture with a large oval posterior sutural spot, and also with a frequently isolated smaller external spot just behind the middle, black, the apices behind the posterior pale area infuscate; under surface piceous, the legs and epipleura pale flavate, the tarsi not darker; head not quite as wide as the prothorax, shorter than wide, with moderate though very prominent eyes; surface feebly rugulose laterally, especially at base; antenne slender, half as long as the body, pale flavo-testa- ceous; prothorax twice as wide as long to a little less, the moderately rounded sides very feebly sinuate just before the sharp basal angles; surface nearly smooth, the faint rugulosity scarcely discoverable; median stria fine, entire between the basal transverse sulcus and the apical margin; elytra a fourth longer than wide, slightly dilated behind the middle, twice as wide as the prothorax or less; strie fine, barely at all impressed, feebly and irregularly punctulate, the intervals not quite flat; dorsal punctures small, at basal third and apical fourth. Length 3.3-3.6 mm.; width 1.4-1.65 mm. Cali- fornia (the locality, unrecorded).................-- metuens n. sp. ——— -* eae AMERICAN CARABOIDEA 259 Apical pale areas joining the anterior in a broad and constant isthmus, always isolating the submarginal small black spot.............. 15 15—Body narrower, shining, pale in color, the head slightly infuscate; prothorax testaceous, the elytra flavate, with a large common oval sutural spot of black, the centre of which is well behind the middle, extended along the suture to the scutellum by a narrow black vitta, the submarginal spot of black slightly behind the middle, the apex black, more widely so externally than suturally; under surface and legs pale, the met-episterna and abdomen piceous-black; head five- sixths as wide as the prothorax, with large and prominent eyes, the surface smooth, but becoming longitudinally and feebly rugulose laterally; antennz slender, testaceous, more than half as long as the body; prothorax twice as wide as long to a trifle more, the sides broadly rounded, moderately reflexed, broadly so at base, the angles sharply defined; transverse rugulosity fine, not dense, the median stria fine but rather deep; elytra fully a third longer than wide, very feebly subdilated posteriorly, four-fifths wider than the pro- thorax, the striae somewhat coarse and impressed, irregularly sub- punctate, with the intervals slightly convex. Length 3.4-4.0 mm.; width 1.35-1.6 mm. Southern California to Texas and Utah anEmuestern;——Weidt).. ccc see cae de sees dee hee es guttula Lec. Body broader, shining, the head deep black, the labrum pale flavate; pronotum fusco-testaceous, gradually clearer laterally; elytra as in guttula, except that the sutural spot is relatively not so large and the apical fascia piceous and narrower; under surface and legs pale, the met-episterna and abdomen piceous-black, the metasternum blackish laterally; head nearly five-sixths as wide as the prothorax, with large and prominent eyes, the surface finely rugulose through- out, except at the middle of the vertex; antennz very slender, more than half as long as the body, fuscous, the three basal joints testaceous; prothorax very short, slightly more than twice as wide as long, the arcuate sides more convergent at apex than in the preceding, becoming very feebly sinuate at the sharp basal angles; rugulosity rather fine but close-set and distinct; margins rather more widely reflexed than in guttula; elytra much broader, scarcely a fifth longer than wide, gradually dilated posteriorly, very nearly twice as wide as the prothorax; strie finer and more feebly im- pressed, the intervals not quite flat. Length 4.2 mm.; width 2.15 mm. California (Lake Co.),—Fuchs............... pacifica n. sp. The species described above under the name serpentina, is allied closely to the Mexican calliope Bates, and was so identified by Schaeffer, but it appears to be narrower and more elongate than that species, the head piceo-rufous and perfectly smooth, and not black and very obsoletely punctulate and striate as it is in calliope, and the sides of the prothorax would appear to be somewhat more widely explanate; the size of calliope is about 0.5 mm. greater. An examination of the figure of calliope, given on the plate, would 260 MEMOIRS ON THE COLEOPTERA seem to show that the prothorax is relatively narrower, the apical pale fascia of the elytra less dilated suturally and the distance separating this lobe from the posterior lobe of the anterior pale spots much less in calliope than in serpentina. Appendiculata Chd., is a species quite distinct from analis and on the average larger and broader, besides differing decisively in maculation. Avxzillaris Dej., according to the description, seems to be a valid species, but I have seen nothing to correspond. Frigida Chd., is placed as a synonym of fuscata in our lists, but the description and figure given by Chaudoir, show unmistakably that it is a synonym of ornata. A partial review of the vittate species of Lebia was given by the writer some years ago (Mem. Col., IV, p. 191); the following is allied to vittata Fabr., but is quite distinct; a description of vittata is also given below for comparison: Lebia websteri n. sp—Form rather stout, moderately convex, shining, the head and prothorax testaceous, the elytra black, with transverse pale apex, without sutural pale area behind the testaceous scutellum, the external pale margin confined to the narrow reflexed edge through- out the length; each elytron has also an oblique irregular vitta, ex- tending from the base within the humerus to the apical pale area at inner third; this pale vitta involves outer half of the third interval from the middle to apex, all of the fourth interval from basal third to the apex, all of the fifth interval from base to apical third, and a small inner section of the sixth interval from basal seventh to third, all of these together producing a rather irregular single oblique vitta; under surface and legs throughout pale testaceous, the tarsi not at all darker; head large, about as wide as the prothorax, with large and prominent eyes; surface deeply strigose between the eyes, except at the middle, elsewhere nearly smooth; antenne rather long, slender, black, the first three and one-third joints pale testaceous; prothorax fully twice as wide as long, the strongly rounded sides very convergent apically, somewhat widely and strongly reflexed, more broadly basally, the angles sharply defined; strigillation very fine and faint; median stria very fine, dilated and abbreviated near the apical margin; elytra a third longer than wide, slightly inflated posteriorly, twice as wide as the prothorax, the striz fine, smooth, evidently impressed, the intervals slightly convex. Length 5.8 mm.; width 2.5 mm. Indiana. Named in honor of Prof. F. M. Webster. As will be observed on comparing the above with the following description, this species differs from vi/tata Fabr., in its larger size, completely pale legs and tarsi, very fine marginal pale stripe of the elytra and more irregular and composite median vitta, which is AMERICAN CARABOIDEA 261 smoothly limited at the sides in vittata, besides the larger head, more transverse prothorax and more impressed elytral striz. Lebia vittata Fabr—Smaller than the preceding but of somewhat similar outline, shining, the head and prothorax testaceous, the elytra black, with pale apex, each with an oblique pale vitta extending from the humerus to the apical pale area near the suture, and with an external _ pale vitta from the humerus to the pale apex, broadest at the middle, where it occupies fully the two outer intervals; also with a very abbrevi- ated common sutural vitta, extending a short distance behind the scutellum; under surface pale rufous, the legs black, more than basal half of the femora abruptly rufous; head nearly four-fifths as wide as the prothorax, with large and very prominent eyes, the surface almost smooth, feebly strigose toward the sides; antenne more than half as long as the body, not very slender, black, the basal joint rufous, the second and third piceo-rufous; prothorax a little less than twice as wide as long, the rounded sides very converging apically and very moderately reflexed, more widely so thence to the base, the hind angles sharply defined; subtransverse strigillation feeble, the stria fine, deep, extending only to the fine and feeble anterior transverse impression; elytra scarcely a third longer than wide, gradually dilated behind, four-fifths wider than the prothorax, the striz fine, smooth, the intervals not quite flat; dorsal punctures distinct. Length 5.0-5.2 mm.; width 2.2 mm. North Carolina (Southern Pines)—Manee. Two specimens. Dianchomena Chd. Disregarding modifications of the epilobes of the mentum and tooth of the emargination, which are of comparatively slight im- portance, I am of the opinion that this group of species should be accorded full generic value. The prothorax differs rather radically in structure and appearance from that of Lebia, being rounded at the sides, more evenly and gradually narrowed basally to the laterally much less developed basal angles, sometimes with the merest trace of these angles, as in abdominalis, and the side margins are narrowly and more feebly and equally reflexed through- out the length, giving to this important segment of the body a very characteristic habitus. The basal angle near the pedicel is sometimes remindful of Lebia, but it is very different in structure, there being no distinct basal enlargement of the finer reflexed margins. The elytra are diversified in coloration very much as in Lebia. The species at present in my collection appear to be six in number as follows, scapularis of Dejean, included by Horn, being a true Lebia, as is also miranda Horn, in all probability: 262 MEMOIRS ON THE COLEOPTERA Elytra wholly metallic green or blue in color.....................-.- 2 Elytra black, each with one or two pale vittz............2...---.-« 3 2—Body rather small in size, moderately convex, shining, the pronotum dull; head black, with dark green reflection, the prothorax flavo- rufous; elytra dark greenish-blue; under surface and legs testa- ceous, the meso- and metasterna, epipleura, tarsi and tibial tips black; head subequal in width to the prothorax, with moderate prominent eyes, the front nearly smooth, with some strigillation near the eyes and with scattered minute punctules; antennz almost deep black, the first three and one-third joints testaceous, distinctly more than half as long as the body; prothorax a third wider than long, the sides subcircularly rounded and very moderately reflexed evenly to the basal lobe, excepting a very obtuse and feeble angula- tion near the latter; basal lobe much more than half the maximum width, somewhat punctured, the sulcus distinct, minutely angulate at the middle; surface convex, finely, feebly rugulose, the stria fine, extending to the apex; elytra between a third and fourth longer than wide, gradually moderately inflated behind, much more than twice as wide as the prothorax; striz very fine, feebly punctulate, almost obliterated, the intervals flat, with some very minute sparse punctu- lation. Length 4.2-4.6 mm.; width 2.1 mm. Texas (Brownsville andielsewhere) vine eee ook eee abdominalis Chd. Body nearly as in the preceding in outline and coloration, but somewhat more elongate, with the elytra green; under surface and legs nearly similar; head only slightly though evidently narrower than the prothorax, with the eyes not quite so large and somewhat less promi- nent, the tempora more strongly rounded, the front nearly as in the preceding, the antennz similar, except that the third joint is in great part blackish; prothorax shorter and broader, three-fifths wider than long, similarly rounded and evenly, moderately reflexed at the sides, but with the basal angulation more pronounced and at a greater distance from the basal lobe, which is but little more than half the maximum width; surface less convex, impunctate, the sulcus finer; stria similar; elytra nearly similar in outline but with even more obsolete striation and only barely more than twice as wide as the prothorax. Length 5.0 mm.; width 2.15 mm. Illinois (GairoyS: See eerie) ae eel eee convictor n. sp. 3—Head and elytra black, the prothorax above and beneath testaceous, each elytron with a slightly oblique flavate vitta, extending from the middle of the base nearly to the apex at inner third; under surface and legs black, the abdomen rufous in posterior half or less, the tibiz slightly pallid, dark at apex. Head shorter than wide, four- fifths as wide as the prothorax, sparsely and unevenly punctulate, the eyes prominent, moderately large; antennz slender, black, the first three joints more or less pale, the third generally blackish distally; prothorax four-fifths wider than long to rather more, the sides strongly rounded and very narrowly, subevenly reflexed to the basal angles, which are sharp though very obtuse and at only a short distance from the basal lobe, the latter three-fifths the maximum width, the sulcus shallow; surface finely, sparsely rugulose : | a AMERICAN CARABOIDEA 263 and punctulate, the stria very fine, not entire; elytra a third longer than wide, gradually feebly inflated posteriorly, distinctly less than twice as wide as the prothorax, the striz very fine, not impressed, feebly punctate, the intervals flat, with sparse and extremely minute punctulation; dorsal punctures small and feeble, at basal and apical fourth. Length 4.5-4.7 mm.; width 2.1-2.25 mm. California. bilineata Mots. Head and elytra black, shining, the prothorax above and beneath testa- ceous; elytra each with two flavate vitte; cox and entire abdomen rufous, the meso- and metasterna and epipleura black........... 4 4—Head moderate, distinctly narrower than the prothorax, the eyes moderate, prominent. Surface nearly smooth, with minute sparse punctulation; antenne unusually long, much more than half as long as the body, black, the first three joints in great part testaceous; prothorax three-fifths (o’) to two-thirds (2) wider than long, the sides rather strongly rounded and finely reflexed to the very obtuse angles, which are minutely prominent at tip; basal lobe punctulate, the sulcus shallow, not sharply defined; surface convex, shining, with fine sparse rugulosity, the median stria fine, not well defined and abbreviated; elytra two-fifths longer than wide, feebly dilated behind the middle, just twice as wide as the prothorax, the strie extremely fine and feeble, minutely punctulate, the flat intervals minutely, sparsely punctulate; each elytron with a flavate vitta from the middle of the base not quite to the apex near inner third, there slightly swollen, also with a submarginal vitta of equal width, extending to posterior fourth, the reflexed margin black; pale vittz equal in width and much narrower than the outer black vitta; legs black, the femora pale at base, the tibiz fusco-flavate except at tip. Length 5.2-5.7 mm.; width 2.25-2.4 mm. Kansas....e#mula n. sp. Head larger, barely visibly narrower than the prothorax; antenne not 5—The pale elytral vittea much narrower than the external black vitta as in the preceding; elytra more elongate; head finely and feebly, very minutely punctulate, with two larger, more widely separated, and two smaller, more anterior and more approximate, impressions, each pair on a transverse line through the eyes, the latter prominent though moderate in size; antenne not very slender, half as long as the body, colored as in @mula; prothorax one-half wider than long, the sides evenly, subcircularly rounded and narrowly reflexed to the obtuse but sharp basal angles, which are at a short distance from the basal lobe, the sulcus shallow and not sharply defined; surface convex, shining, with fine sparse rugulosity and minute sparse punctures, the stria fine, not entire; elytra slightly less than one-half longer than wide, very gradually “and slightly broader posteriorly, fully twice as wide as the prothorax; vitte nearly as in the preceding, the submarginal a little shorter, the sculpture nearly similar, except that the fine strie are rather more distinct; legs black, the femora pale at base, the tibie obscure rufous, black at tip. Length 5.3 mm.; width 2.2 mm. Jowa (Keokuk). quadrivittata Dej. 264 MEMOIRS ON THE COLEOPTERA The pale elytral vitte much wider, about as wide as the external black vitta, the elytra much less elongate, relatively broader; head finely but strongly, less sparsely punctulate, the impressions between the eyes less definite; eyes a little larger, not quite so prominent; an- tenne rather thicker, half as long as the body, shining black, the three basal joints more or less testaceous; prothorax a little more than one-half wider than long, widest more evidently before the middle, the sides subevenly rounded, finely but sharply reflexed to the basal angles, which are sharp and minutely subprominent at tip, the basal part thence to the basal lobe much more transverse than in the preceding, the surface forming the lobe more depressed and punctate, the sulcus not well defined; general surface features and fine median stria as in the preceding; elytra a fourth longer than wide, slightly inflated behind, much more than twice as wide as the prothorax, the pale vitte much broader, equal in width to the black vitte, the submedial pale vitta deflexed internally at its posterior end to the first stria, the very fine feeble striae and minute interstitial punctures nearly as in the other species; legs black, the femora pale basally, the tibie pale rufo-flavate, black at tip. Length 5-75 mm.; width 2.5 mm. Colorado (Boulder Co.). devincta n. sp. The species usually called bivittata Fabr., I have entered above in the name given it by Dejean; quadrivittata is at least accurately defined by the author and is therefore definite, but this cannot be said of the Fabrician species, whatever it may prove to be. Coptodera Dej. The salient “external features of this genus are the stout and rather convex body, very large head, short transverse prothorax, elongate labrum, comparatively short antenne, complete absence of the basal thoracic lobe of Lebia, indentation of the sixth elytral stria from the middle to apical sixth and the unusual position of the two dorsal punctures, the anterior being very near the base, ad- joining the third stria, and the posterior only slightly behind the middle and at the second stria. The considerable series in my collection from Indiana, Maryland and North Carolina agrees perfectly with LeConte’s description of his viridipennis from Alabama, and, if really identical with @rata Dej., the latter name must be regarded as unhappily chosen; this however was due primarily to Knoch, who sent it to Dejean under the manuscript name Lebia erata; the green color of the elytra is intense and vivid and the head and pronotum are’ deep greenish- black. . AMERICAN CARABOIDEA 265 Axinopalpus Lec. Axinopselaphus G. & H. In this genus the species are very small, with the hind thoracic angles acute and more or less prominent behind a small sinus, the base transverse and the elytra usually but not always ornamented with a flavate humeral spot, which is-obliquely prolonged pos- teriorly. The eight species in my collection may be known very pay as follows: ‘El Memrmieitpale humeral marking... ... 2.2.20... -cee cee r tects eees 2 Elytra PRoMvepAle without maculation.-...--ss+400 5. eecedce. +--+. 6 -2—Humeral pale maculation very short, faint and nubilously defined. : Body very small, the surface polished, blackish-piceous, the head black; under surface and femora black, the tibie and tarsi paler; head somewhat wider than long, five-sixths as wide as the pro- thorax, smooth, with a few feeble rugule behind the eyes, which are well developed and prominent; palpi pale; antennz long, nearly three-fifths as long as the body, longer than the elytra, fuscous, gradually paler basally; prothorax short, three-fifths wider than long, widest anteriorly, the oblique sides becoming sinuate posteriorly and very finely reflexed, the basal angles right, sharp and laterally prominent; surface smooth, the anterior and posterior transverse impressions deep, the connecting median stria fine but deep; elytra one-half longer than wide, nearly three-fourths wider than the prothorax, parallel, the outer angle at apex broadly rounded, the feeble truncature not sinuate; strie fine, feebly impressed; dorsal punctures small and feeble. Length 2.3 mm.; width I.o mm. California (Napa Co.—Jountville). Taken by the writer. ¢ illectus n. sp. Humeral pale maculation more extended posteriorly and sharply de- 3 3—Antenne shorter though very slender, about as long as the elytra, the individual joints much shorter. Surface highly polished; body black, the humeral pale mark extending through basal third at the sides and to the middle and inner third on the disk; under surface black, the legs and epipleura pale; head distinctly narrower than the prothorax, rounded, fully as long as wide, with notably small and but feebly prominent eyes; antennz fusco-testaceous, gradually clearer basally; prothorax less abbreviated than in the preceding, though with nearly similar outline, one-half wider than long, the finely reflexed sides similarly more widely deplanate at the sharp and laterally prominent angles; impressions finer and feebler, the median stria deep; surface very smooth and polished; elytra two- fifths longer than wide, four-fifths wider than the prothorax, similar in outline, the strie fine and very feebly impressed. Length 2.3- 2.8 mm.; width 0.8-1.1 mm. California (Los Angeles to Hum- “1 LE 5 onic 588 iit EAE californicus Mots. 266 MEMOIRS ON THE COLEOPTERA Antenne much longer, with more elongate though not quite so narrow JOints... 06... sic tees cose dena seater 4 4—Elytra more elongate, fully two-fifths longer than wide and as long as the antenne. Body elongate, polished, piceous-black, the hu- meral flavate marking extending at the sides to a little before the middle, and, on the disk, to posterior third, the inner side following _ the second stria rectilinearly for a long distance; head small, scarcely over two-thirds as wide as the prothorax, the eyes rather small but prominent; antenne slender, fuscous, becoming pale in the four or five basal joints; prothorax relatively large, scarcely one- half wider than long, in outline nearly as in the two preceding but with the sharp basal angles slightly more than right; margins very finely reflexed, broadly deplanate at the angles; anterior impression extremely fine and feeble and the posterior obsolete medially, the median stria fine but deep, the surface very smooth; elytra slightly broader posteriorly, with broadly arcuate sides, two-thirds wider than the prothorax, the strie fine and very feebly impressed. Length 2.8 mm.; width 1.15 mm. Texas (Austin). A single example, taken by the writersttg sees = cles 3 5-022 oe habilis n. sp. Elytra in similar manner fully as long as the antenne, the head and prothorax larger, the eyes very much more prominent. Upper surface almost deep black, the under surface piceo-rufous, the epipleura and legs bright flavate; head three-fourths as wide as the prothorax, with very prominent eyes, the anterior impressions parallel and very remotely separated; antenne long and slender, flavo-rufous, gradually dusky distally, the fourth joint fully three times as long as wide; prothorax large and transverse, four-seyenths wider than long, widest near apical third or fourth, the sides strongly rounded, thence oblique and less arcuate posteriorly, becoming parallel for some distance before the right and sharp angles, ex- tremely finely reflexed throughout; base broadly lobed in the middle, somewhat wider than the broad apical sinus, the apical angles broadly rounded; transverse impressions very feeble, the stria deep, the basal foveze very small and feeble; elytra rather more broadly oblong than in habilis, with broader humeri, only feebly inflated posteriorly, the humeral and apical angles broadly rounded, nearly two-fifths longer than wide, about one-half wider than the prothorax, the sharply defined pale area occupying nearly basal half at the sides and outer half at base, the posterior prolongation extending to three-fifths and not quite as long as the humero- marginal part; strie fine and very feeble, more nearly obsolete than in habilis. Length 3.2 mm.; width 1.22 mm. Colorado (Boulder Co.) —Cockcerelliyjeverecisterste «:.3.0.05, areca) terre enone coloradensis n. sp. Elytra less elongate, only about a fourth longer than wide, shorter than the antenney o.oo cc eevee + se os vee oe 000 0 ee ee 5 5—Head smaller, with well developed and very prominent eyes, piceous- black, polished; humeral flavate spot extending through basal third at the sides and to just behind the middle near inner third on the disk, the posterior arm narrower than in habilis and niore oblique; under surface piceous-black, the legs and epipleura pale flavate; f i ; . AMERICAN CARABOIDEA 267 head three-fourths as wide as the prothorax; antenne three-fifths as long as the body, feebly incrassulate distally, fuscous, the first five or six joints flavate; prothorax one-half wider than long, the sides strongly rounded anteriorly, rather deeply sinuate for a short distance before the basal angles, which are sharp and laterally prominent; margins very finely reflexed, the deplaniture at the angles more gradual and less well defined than in the preceding forms; transverse impressions obsolete,-the median stria deep and rather coarse; elytra subparallel, with arcuate sides, two-thirds wider than the prothorax, the strie very fine and Bo ee feeble; dorsal punctures not clearly visible. Length 2.65-2.8 mm.; width 0.85-1.1 mm. Rhode Island. Four examples.. biplagiatus Dej. “Head relatively larger but with decidedly smaller aad less conspicuously } i prominent eyes, piceous-black and polished; humeral pale area extending a little behind basal third at the sides, the inner ramus long, longitudinal and extending through three-fifths; under surface as in the preceding, the meso- and metasterna, but not the para- pleura, also pale as in biplagiatus; head nearly four-fifths as wide as the prothorax, as long as wide, smooth, with two feeble impres- sions at the epistomal suture; antennz slender, two-thirds as long as the body, fuscous, the first six joints flavate; prothorax shorter, rather more than one-half wider than long, widest well before the middle, but with more evenly rounded sides than in biplagiatus, the basal sinus deep, the angles sharp and laterally somewhat prominent; margins and impressions nearly similar, the median stria finer; elytra parallel, with arcuate sides, three-fifths wider than the pro- thorax, the strie fine and very feebly impressed, the dorsal punctures extremely small and feeble. Length 2.7-2.9 mm.; width 1.0-1.2 mm. California (San Francisco to Los Angeles)...demissus n. sp. 6—Body very small in size, moderately shining, flavate in color, the under surface of the hind body sometimes more piceous; head infuscate, narrow, elongate, with rather long neck, three-fourths as wide as the prothorax, the eyes small, very moderately convex; front smooth; antenne flavate, three-fifths as long as the body; prothorax a third wider than long, widest anteriorly, with evenly rounded and very finely reflexed sides, converging posteriorly, rather deeply sinuate before the acute and laterally rather prominent angles; surface at the angles slightly deplanate, elsewhere convex, smooth, the anterior impression, medially, and the posterior sulcus both distinct, the stria deeply impressed; elytra two-fifths longer than wide, feebly inflated posteriorly, four-fifths wider than the prothorax, feebly convex, the striz shallow and broadly impressed, the dorsal punctures minute and feeble, scarcely discoverable. Length 2.65 mm.; width 1.0 mm. California (San Francisco and sith COS Biche, Slots Eee ena ean COE Nea fusciceps Lec. Body decidedly larger and with the lustre and coloration subsimilar; head larger, four-fifths as wide as the prothorax and not longer than wide, the neck shorter; eyes not so small and evidently more prominent; surface not so smooth, minutely, sparsely punctulate; antenne nearly similar; prothorax larger, less abbreviated, a fourth 268 MEMOIRS ON THE COLEOPTERA wider than long, the general outline nearly similar, ‘except that the base is about as wide as the apex and not a little narrower as it is in fusciceps; anterior impression feebler, the impressed median stria longer; elytra longer, nearly one-half longer than wide, three- fourths wider than the prothorax, oblong, with arcuate sides, the striz rather deeper and more sharply defined than in the preceding; outer angle at apex similarly broadly rounded, the apex arcuato- truncate; dorsal punctures minute, indistinct. Length 2.7-3.0 mm.) width! 0:O—1.lemmessdlexass- ./-).)-)- 2) nigriceps Lec. Californicus Mots., and nigriceps Lec., have been declared synonyms of diplagiatus and fusciceps respectively, but this is incorrect; they are both amply valid as species; in fact, there would appear to be little or no doubt connected with the validity of any of the species above described; they are well characterized among themselves. Blechrus Mots. Bomius Lec. Although Metabletus, as represented in the European fauna, is probably distinct from Blechrus, this cannot be said so truly of americanus, now placed in that genus in our lists, and | think, with Zimmermann, that it should be ranged with the other American forms under the genus Blechrus; A pristus, however, by peculiarities of sculpture and habitus, should be regarded as valid, and not united with the others as recommended by Zimmermann. Our species of Blechrus are small, slender, black and polished, and have the surface nearly smooth; those in my collection are the following: Prothorax relatively narrower, but little more than half as wide as the elytra... ccc bem tiod sel gee eaas stat hee leer 2 Prothorax broader, transverse, very much more than half as wide as the elytra. Metabletus, Horn... .:..'2.< 2-2 -).+ «fe soe er 7 2—Head broader, not elongate, the eyes distinctly prominent......... 3 Head narrower, elongate, the eyes not prominent though somewhat CONVERS... od ie Soci Gee ee awiseseaalaael ees 4 3—Surface shining, black throughout the body, legs and antenne, the femora and coxe picescent; head but just visibly narrower than the prothorax, smooth, the eyes at about their own length from the base, the tempora strongly converging; antenne distinctly more than half as long as the body; prothorax larger than in any other of this section of the genus, not quite one-half wider than long, nearly three-fifths as wide as the elytra, widest anteriorly, the arcuate sides oblique behind, very finely reflexed, a little more so at the basal angles, which are minutely acute and subprominent; transverse impressions obsolete, the median line coarsely impressed; AMERICAN CARABOIDEA 269 elytra not quite one-half longer than wide, the sides barely at all arcuate, evenly and moderately diverging from the humeri; apex truncate, the external angle moderately rounded; strie broadly, very feebly impressed and subobsolete. Length 2.65-3.3 mm.; width 1.0-1.2 mm. Utah (southwestern), Idaho (Cceur d’Alene), Wisconsin and Iowa to New York and Massachusetts. [Dromius __angustus IRC Ge ete te vesede seceae: teens Sialbae wide. Fale wreneetaerereate @ linearis Lec. Surface sim larly colored and shining, smaller in size; head relatively larger, as wide as the prothorax, nearly smooth, with a small central fovea or impression; eyes at about their own length from the base; __antennz moderately slender, over half as long as the body; pro- thorax a third to two-fifths wider than long, four-sevenths as wide as the elytra, in outline nearly as in the preceding, the basal angles even more distinctly acute and prominent; impressions faint, the stria deeply impressed and biabbreviated; elytra shorter, two-fifths longer than wide, in general outline and sculpture nearly similar. Length 2.6-3.0 mm.; width 0.9-1.0 mm. Nevada (Reno) and California (Lake Tahoe and Humboldt Co.)...... prominulus n. sp. 4—Antennz long and slender, much more than half as long as the body. engl Peis cy. )osald web) s se ISR See Mee Rete emNaGehls alee 5 Antenne shorter, half as long as the body, the individual joints much more abbreviated; size much smaller. Sonoran regions......... 6 5—Body smaller and narrower than in Jinearis, rather depressed, shining, black, the legs piceous; head smooth and rhomboidal, just visibly narrower than the prothorax, the latter a third wider than long, widest anteriorly, the sides broadly arcuate, oblique behind, the angles minutely prominent; margins as in the preceding species; impressions obsolete or very feeble, the surface smooth as usual; median stria rather coarsely and deeply impressed, biabbreviated; elytra nearly one-half longer than wide, the sides very feebly arcu- ate, slightly diverging; surface depressed, the striez broadly, feebly impressed but evident. Length 2.75-3.0 mm.; width 0.85-1.1 mm. California (Sta. Clara to Sonoma). Rather abundant. nigrinus Mann. A—Similar to nigrinus but somewhat larger and more convex, the head not so narrow, as wide as the prothorax, with the eyes distinctly larger and relatively somewhat less prominent; pro- thorax shorter, fully two-fifths wider than long; elytra wider and more convex, very smooth, the striz subobsolete, barely glimpsible in. part by oblique light. Length 3.4 mm.; width 1.15 mm. Bamiornia (San Prancisco).. sa... 0. snsaeess.s8 fretus n. subsp. B—Similar to nigrinus and with the head notably narrow and the antenne long and slender as in that and fretus, but with the prothorax shorter, nearly one-half wider than long; elytra as in nigrinus in outline, about one-half longer than wide, narrower and more elongate than in fretus, rather convex, smooth, the striz obsolescent as in fretus. Length 3.25 mm.; width 1.05 mm. California (Port Harford, S. L. Obispo Co.)....obispinus n. subsp. Body still smaller and with evidently shorter elytra, shining, black, the legs piceous; head rhomboidal, barely narrower than the prothorax, ee 270 ¥ MEMOIRS ON THE COLEOPTERA the eyes very slightly more prominent than in nigrinus, the front smooth; antenne evidently shorter than in any of the three pre- ceding forms, though longer than half the body, the individual joints much more abbreviated; prothorax as in nigrinus but a little shorter, the head, neck and prothorax all relatively wider than in that species; elytra a third longer than wide, three-fourths wider than the prothorax, in outline and striation almost as in migrinus, the strie obtusely impressed and similarly distinct. Length 3.0 mm.; width 0.95 mm. California (San Francisco). curtipennis n. sp. 6—Form narrow, very moderately convex, polished black, the elytra, epipleura and legs piceous; head narrow and elongate-rhomboidal, fully as wide as the prothorax, smooth, the eyes rather well de- veloped but not at all prominent; prothorax small, barely a third wider than long, the sides broadly arcuate, converging from well before the middle, becoming briefly sinuate at the basal angles, which are more than right though sharp and subprominent, barely at all reflexed; anterior impression scarcely evident and only at the middle, the posterior obsolete, the median stria deeply impressed, biabbreviated as usual; elytra two-fifths longer than wide and just visibly more than twice as wide as the prothorax, of the usual outline but without evident striation; dorsal punctures very minute, just before the middle and near apical third. Length 2.5 mm.; width 0.75 mm. Texas (Austin). Colorado River of Cali- forniaj—LeContea..cac eek sive Seine & osc hee lucidus Lec. Form still narrower and smaller than any other known species, feebly - convex, shining, black, the epipleura and legs piceous; head not so elongate, barely longer than wide, rhomboidal, the eyes small, feebly convex; prothorax equal in width to the head, small, only slightly wider than long, the moderately oblique sides from near the apex less arcuate than usual, the hind angles sharply subprominent; transverse impressions very feeble, the anterior nearer the apex than usual, the median stria moderate; elytra almost one-half longer than wide and just visibly less than twice as wide as the prothorax, the sides slightly diverging from the humeri; striz broadly and very feebly impressed though evident. Length 2.0 mm.; width 0.65 mm. Texas (Brownsville); also occurs in Louisiana. pusio Lec. 7—Form somewhat broader, rather convex, shining, black, the ‘egs piceous; head wider than long, sensibly narrower than the pro- thorax, the eyes well developed and notably prominent; front smooth; anterior impressions briefly lineiform, oblique; antenne slender, a little more than half as long as the body; prothorax short and transverse, nearly three-fifths wider than long, widest - and inflated well before the middle, the hind angles more than right but sharp and subprominent; impressions moderate, the anterior at a considerable distance from the apex, the stria moderate, im- pressed; base with a feeble median lobe; elytra two-fifths longer than wide, rather convex, subparallel, less than one-half wider than the prothorax, the strie fine but rather sharp, slightly irregular, AMERICAN CARABOIDEA 271 feebly impressed though evident, the dorsal punctures nearly as in the preceding; apical truncation just visibly sinuate, rounded toward the suture. Length 2.6-3.0mm.; width 0.9-2.2 mm. New Hampshire, Ontario, Lake Superior, Colorado, Arizona, Idaho and Washington State (Spokane). Abundant........ americanus Dej. one er eeey~ : _ There can be little or no doubt that linearis Lec., is a species different from nigrinus, with which it was united too hastily, as shown by ample series. I am quite unable to place the species described by Zimmermann as Metabletus borealis, from Lake Super- ior; it is said to be very similar to americanus, but with the pro- thorax transversely quadrate, only slightly narrowed behind and having broadly reflexed hind angles; these characters will not amswer at all to americanus, for there the prothorax is rather strongly narrowed behind and with a very narrow deplaniture at the hind angles. The name angustus is only preoccupied apparently in Dromius, in which genus it was placed by LeConte, so that it would be available in Blechrus, but as linearis, by the same author, is equally suitable, I leave the synonymy as above given. There is very little development or diversification of color or sculpture throughout this genus, so that an unusual degree of monotony prevails among the species. The name Microlestes Sch.-Géb., is used in place of Blechrus in the recent European catalogue, but I have no opportunity at present to confirm the correctness of the course indicated. Apristus Chd. The general habitus of the small elongate species composing this genus is very much as in the preceding, but the elytra are more deeply sculptured and the colors more metallic as a rule; the chief distinction, however, among the Lebiinz, resides in the small slender tarsal claws, which are devoid of all vestige of serru- lation beneath. The sides of the thoracic base are more or less Oblique and the mentum is denticulate. The anterior tarsi of the male are barely thicker than those of the female, but are always notably shorter. Our species are widely diffused over the entire country, as well as. Mexico, and are rather numerous, especially near the Pacific coast; those now represented in the material so far accumulated are as follows: a . ¥ 272 MEmMorrs ON THE COLEOPTERA Sides of the prothorax briefly and feebly sinuate at the sharp and minutely — subprominent basal angles; dorsal punctures of the elytra two in Sides deeply sinuate in basal fourth; dorsal punctures three......... II 2—Prothorax very short, fully three-fourths wider than long. Body black, rather shining but without distinct metallic lustre; under surface and legs black, the coxe piceous; head well developed, four-fifths as wide as the prothorax, with notably broad neck, not © longer than wide, the eyes rather large and prominent; surface rugulose or strongly micro-reticulate throughout, with a small central puncture and striole; antenne black as usual, about half as long as the body; prothorax widest at apical third, where the sides are strongly rounded, oblique posteriorly; base equal in width to the neck, the lateral obliquity short but strong; apex broadly | sinuate; margins extremely finely reflexed; surface feebly rugose, the impressions obtuse, shallow, the median stria deeply impressed; elytra between a third and fourth longer than wide, parallel, one- half wider than the prothorax, the apices slightly oblique; margins very finely reflexed; striz fine, shallow, slightly uneven, not at all sulciform; intervals somewhat uneven, sparsely micro-punctulate and strongly reticulate though shining. Length 3.25 mm.; width 1.25 mm. California (Sonoma Co., Cloverdale). A single female. cephalus n. sp. Prothorax less abbreviated. ..-.-..<...2...0-+~ «soe eee 8 3—Elytral striz very fine, shallow and equal throughout the width, not in the least sulciform. Body rather more depressed than usual and shorter, black, somewhat shining, the elytra dark piceous; under surface and legs black; head scarcely as long as wide, five- sixths as wide as the prothorax, the eyes moderate and but slightly prominent; front smooth, rugulose antero-laterally, the anterior impressions long, striiform and parallel; antennz moderate, less than half as long as the body; prothorax three-fifths wider than long, in outline and general structure nearly as in the preceding; surface smoother, the impressions more nearly obsolete; stria fine, impressed, entire; elytra oblong, parallel, a third longer than wide, a little less than one-half wider than the prothorax, shining and only feebly micro-sculptate, the intervals flat; dorsal punctures distinct, near two-fifths and three-fourths, not closely adjoining the third stria. Length 3.0 mm.; width 1.2 mm. California (Mt. Diablo). A single male example, taken by the writer....... subdeletus n. sp. Elytral striz broadly sulciform at least toward the suture..........-- 4 4—The sulciform strie of the elytra obliterated laterally, rather less deep than usual toward the suture; body small in size..........- 5 The striz more or less conspicuous throughout the width..........-- 6 5—Upper surface shining and rather brightly eneous throughout; under surface black, the legs piceous; head fully four-fifths as wide as the prothorax, as long as wide, with moderate but rather prominent eyes; front smooth, rugulose anteriorly, the anterior impressions short; antenne black, half as long as the body; prothorax large, three- fifths wider than long, the sides finely but evidently reflexed, rather Clb l™ AMERICAN CARABOIDEA 273 broadly rounded anteriad, oblique posteriad, the hind angles some- what blunt, thickened; surface smooth, except at apex and base, the impressions very feeble, the stria fine, impressed, biabbreviated; elytra short, parallel, a fourth longer than wide, two-fifths wider than the prothorax; apices slightly oblique, with very broad ex- ternal angle; strie in about inner half shallowly broad and sulci- form; dorsal punctures adjacent to the third stria, just before the middle and at apical fourth. Length 3.0 mm.; width 1.2 mm. California (San Diego). A single female example, taken by Mr. quite so deep black as the anterior parts; under surface and legs black, the coxe paler as usual; head only just visibly narrower than the prothorax, fully as long as wide, with rather large and prominent eyes, the surface smooth, feebly punctulate and subrugulose an- teriorly, the impressions short; antenne slender, nearly half as long as the body; prothorax almost three-fifths wider than long, relatively not so large asin the preceding, though nearly similar in outline, the hind angles somewhat more than right but sharper and prominent; impressions obsolete, the surface punctulate near apex and base; stria fine, deeply impressed; apex very shallowly sinuate, subprominent toward the middle; elytra between a third and fourth longer than wide, parallel, with broadly arcuate sides, fully one- half wider than the prothorax; strie fine throughout, feebly im- pressed and much less than usually subsulciform internally; dorsal punctures fine, not quite adjoining the third stria behind basal third and at apical fourth. Length 2.85 mm.; width 1.1 mm. Nevada (Reno). A single example, taken by the writer. nevadensis n. sp. 6—Sides of the prothorax moderately oblique behind................ 7 Sides strongly oblique, the base relatively narrow.................-. 10 7—Eyes notably prominent; surface shining, black, very obscure sub- geneous in lustre; under surface and legs black; head rather large, barely visibly narrower than the prothorax, smooth, with some sparse and minute punctulation anteriorly, the anterior impressions short but deep; antenne slender, half as long as the body; prothorax less than usually expanded anteriorly, slightly less than one-half wider than long, widest behind apical third, the sides broadly rounded, oblique and becoming gradually sinuate behind, the angles right and sharp; margins very finely reflexed, the surface shining and nearly smooth, punctulate at apex and base, the impressions almost obsolete, the median stria deeply impressed; elytra oblong, parallel, with broadly and subevenly arcuate sides, scarcely a third longer than wide, three-fifths wider than the prothorax; strie broadly sulciform, finer and feebler laterally, the micro-reticulation strong; dorsal punctures distinct, barely before the middle and just visibly before apical fourth. Length 3.1 mm.; width 1.2 mm. uizone (Lucson);—J. F. Tucker... .......0.0.5-... tuckeri n. sp. T. L. Casey, Mem. Col. IX, Feb. 1920. 274 MEMOIRS ON THE COLEOPTERA Eyes only very moderately prominent, the prothorax more expanded anteriorly. ...0.c See ann ad ees BARINE 369 and not densely punctate, rather longer than the head and prothorax, with the upper surface very feebly swollen basally; prothorax a fourth wider than long, the sides just visibly converging and straight, gradually rounding in nearly anterior half to the constriction, the apex broad, three-fifths as wide as the base, the lobe rounded, rather abruptly formed; punctures coarse, dense and partially confluent, the smooth median line central only; scutellum small, subquadrate, slightly transverse; elytra suboval, rather rapidly and broadly rounding behind, only about a third longer than wide, distinctly wider than the prothorax and less than twice as long, the humeral callus moderate but rather prominent; grooves ‘moderately coarse and very deep, the intervals one-half wider than the grooves, with single series of coarse and close-set punctures, the second and third wider, with the uniserial punctures less coarse; short sete small, the long distinct only on intervals 3-5-7—9; condensation at base of the third very distinct; abdomen strongly, rather densely punctate. Length (2) 3.0 mm.; width 1.25 mm. Florida (Key West). To be known readily from nigrina by its more robust outline, coarser pronotal sculpture, coarser and closer interstitial punctures and more conspicuous white squamules of the elytra; the abdominal punctures are also slightly denser and the prothorax is larger. Pseudobaris caroline n. sp—Form, deep black color and rather shining lustre as in nigrina; beak nearly similar in the sexes, arcuate, rather closely punctulate at the sides and about as long as the head and prothorax, not very slender; prothorax between a fourth and third wider than long, the sides just visibly converging and barely arcuate to about apical fourth, there rapidly rounding to the tubulate apex, which is distinctly more than half as wide as the base, the latter transverse, with somewhat abrupt rounded lobe; punctures moderate, dense and partially confluent throughout, the smooth median line distinct centrally; scutel- lum transversely oval; elytra feebly ovulate, rather obtusely rounded behind, two-fifths longer than wide, very little wider than the prothorax and twice as long, the humeral callus very moderate; grooves deep, a little more than half as wide as the intervals, the single series composed of punctures rather close-set and half as wide as the intervals; sete indistinct, the white squamules long, sparse but distinct on the alternate intervals; basal clusters moderate; abdomen rather strongly and closely, at the sides more densely and rugosely, punctate, the basal impression of the male long though feeble. Length (o’ Q) 2.4-2.8 mm.; width 0.9- 1.25 mm. North Carolina (Black Mts.),—Beutenmiiller. Very close to nigrina in size and general appearance, but differing in the form of the prothorax, the sides of which in that species are gradually rounding anteriorly from very near the middle, with the apex not quite so wide and the tubulation less marked; the pronotal punctures, also, are a trifle larger in nigrina, the elytra manifestly broader and relatively shorter than in caroline. T. L. Casey, Mem. Col. IX, Feb. 1920. 370 MEMOIRS ON THE COLEOPTERA Pseudobaris verecunda n. sp.—Elongate-oval, convex, shining and deep black throughout, very small in size; beak (co) rather thick, evenly arcuate, closely punctulate and as long as the head and prothorax, or (2) more slender, smoother and very slightly longer; prothorax shorter, a third wider than long, the sides subparallel and very feebly arcuate for two-thirds, then gradually rounding to the tubulate apex, which is three-fifths as wide as the base, the lobe of the latter rather gradual and not very broadly rounded at apex; punctures moderate but very dense throughout, the smooth median line distinct and entire or nearly so; scutellum small, transversely oval; elytra very gradually subovoidal, obtuse behind, three-sevenths longer than wide, very slightly wider than the prothorax and distinctly more than twice as long, the grooves deep, moderate, half as wide as the intervals, the single series of which are composed of rather small, feeble and separated punctures; sete small, the erect sparse squamules very few, the basal spots rather diffuse; abdomen finely and sparsely, toward the sides more coarsely and closely, punctate, the basal impression of the male deep, abrupt and somewhat transversely oval. Length (o’ 2) 2.3-2.6 mm.; width 0.8- 1.0 mm. Indiana. Levette collection. Said to occur on the golden- rod. This species, while allied to nigrina, differs in its still smaller size, shorter prothorax and rather narrower and more elongate elytra, with less coarse grooves and much finer and feebler interstitial punctures. Pseudobaris providens n. sp.—Stouter, convex, elongate-suboval, deep black and shining, the beak (o") rather thick, arcuate, closely punctulate and but little longer than the prothorax, or (2) not so thick, though closely punctulate at the sides, and slightly longer than the head and prothorax, the latter fully two-fifths wider than long, the sides just visibly converging and nearly straight to about the middle, there grad- ually rounding and more convergent to the subtubulate apex, which is not quite half as wide as the base, the lobe of which is rather large and abrupt but short and broadly rounded; punctures relatively coarse, deep and dense throughout, but confluent only at the sides, the smooth line distinct, not quite entire; the punctures at apex are small and sparse; scutellum transversely suboval, feebly canaliculate along the middle; elytra very obtusely suboval, two-fifths longer than wide, slightly wider than the prothorax and about twice as long, the humeri rather prominent; grooves somewhat coarse, very deep, about half as wide as the intervals, the uniserial punctures of which are rather coarse but shallow, moderately separated, less coarse posteriad, the sete very small and indistinct, the longer white squamiform hairs thicker than usual, very sparse, some- times more evident along the first interval subbasally, the basal clusters distinct; abdomen moderately and rather closely punctate, with a dis- tinct elongate-oval medio-basal impression in the male. Length (@ 9) 3.3-3.5 mm.; width 1.28-1.5 mm. Indiana. Levette collection. Four examples. BARIN 371 ih. Not closely allied to any other described species, being twice as _ large as nigrina and stouter, with much larger, more coarsely and somewhat less densely punctate prothorax. The punctures of the inner intervals are finer than those of the others, as is frequently the case. The following four species are more or less close relatives of angusta Lec., differing from those of the nigrina section in the generally more slender outline, absence of the longer white squam- ules of the elytra and obsolete or feeble condensation at the base of the third interval; also in the finer and more widely separated punctures of the interstitial series. By longitudinally reflected light there is generally a more or less evident imbricate sculpture visible on the lateral intervals. The very much larger discreta, from Texas, is also to be placed in this angusta section, although much less slender than the others and with coarser pronotal and larger, though shallow, interstitial punctures, and with somewhat coarser grooves: Pseudobaris tradita n. sp—Elongate-oval, convex, rather shining and deep black throughout; beak in the male rather slender, evenly arcuate, subopaque and somewhat closely punctulate, fully as long as the head and prothorax, the latter barely a fourth wider than long, the sides con- verging and nearly straight to about apical third, there rounding rather rapidly to the tubulate apex, which is just visibly more than half as wide as the base, the basal lobe short, gradual and broadly rounded; punctures relatively coarse and dense throughout though not in contact or confluent, the median impunctate line wholly wanting; scutellum small, transversely suboval; elytra elongate and obtusely subovoidal, nearly one-half longer than wide, a little wider than the prothorax and twice as long, the humeral callus rather prominent, the grooves deep, moderately coarse; intervals a little less than twice as wide as the grooves, with feeble, well separated, transversely sublineate punctures; sete indistinct, the basal condensations small but evident; abdomen with small but deep, close but separated punctures, becoming coarser, longi- tudinal and subrugose at the sides, the medio-basal impression of the male rather long and narrow though shallow. Length (co) 2.8 mm.; width 1.12 mm. Missouri,—Schuster. Stouter than angusta, with less cylindric prothorax, the sides of which are more rapidly rounded and more anteriorly; also with distinctly coarser pronotal punctures. I have associated with the male type a female from Keokuk, Iowa, which resembles it very closely but is much smaller in size. 372 MeEmorrRS ON THE COLEOPTERA Pseudobaris illini n. sp—Resembles the preceding rather closely but somewhat stouter, the beak in the male a little shorter, barely longer than the prothorax, opaculate and punctulate at the sides; prothorax only a fifth wider than long, the sides converging and straight to beyond apical fourth, there gradually and feebly rounding for a short distance to the tubulate apex, which is more than half as wide as the base, the lobe of the latter smaller and more narrowly rounded than in tradita; punctures coarse and dense; median smooth line well developed but abbreviated; scutellum very short and transverse, impressed; elytra shorter, two-fifths longer than wide, a little wider than the prothorax and slightly less than twice as long, the sides more parallel, gradually rounding behind the middle, the humeral callus smaller but somewhat prominent; grooves not quite so coarse; intervals nearly twice as wide as the grooves, each with a single loose series of fine punctures, which are not transverse as they are in fradita: sete indistinct, the basal condensations minute and feeble; abdomen with close-set and rather strong punctures, coarse and closer at the sides, the medio-basal impres- sion of the male very shallow. Length (o’) 3.0 mm.; width 1.2 mm. Illinois (locality unrecorded),—Webster. Differs from fradita in its shorter and stouter form, especially in the hind body, in having the subapical rounding of the thoracic sides still feebler and more anterior, in the smooth thoracic line and smaller basal lobe and in the finer and non-transverse interstitial punctures. Pseudobaris levettei n. sp.—Suboblong-elongate, obtuse behind, deep black, slightly alutaceous; beak in the female slender, arcuate, shining except on the punctured basal part of the sides, distinctly longer than the head and prothorax, the latter only a fifth or sixth wider than long, the sides slightly converging and very feebly arcuate, gradually rounding and feebly converging in about anterior third, the subtubulate apex more than half as wide as the base, the lobe of the latter small, obtusely triangular; punctures moderate in size, deep and dense, but not coales- cent except at the sides; median impunctate line distinct though only centrally, the scutellum small, transverse; elytra nearly one-half longer than wide, barely visibly wider than the prothorax and twice as long, the sides feebly arcuate, barely at all converging to the evenly but obtusely rounded apex, the humeri prominent; grooves moderate, very deep; intervals subopaque, twice as wide as the grooves, each with a close-set series of moderate rounded punctures; sete small but distinct; basal condensations very small, loose and obsolescent; abdomen rather coarsely but shallowly, closely punctate, rugose at the sides. Length (2) 3.25 mm.; width 1.2 mm. A single specimen unlabeled in the Levette collection, but in all probability taken in Indiana. This species is distinct in the rather long, subparallel and obtusely rounded elytra, with opaculate intervals and in several other features, as may be inferred from the description. BARIN-E 7 Pseudobaris kansana n. sp—DMore narrowly elongate-oval, much less obtuse behind, convex, deep black and not very shining; beak in the male short, feebly punctate, opaculate, only slightly arcuate and a little longer than the prothorax, which is shorter, fully a fifth wider than long, the sides feebly converging and nearly straight, rounding gradually from only slightly beyond the middle, the subtubulate apex more than half as wide as the base, the basal lobe nearly as in Jevettei; punctures coarse but not very deep, dense, the smooth median line feebly traceable medially but not definite; scutellum small, transverse, coarsely sculp- tured; elytra nearly one-half longer than wide, barely wider than the prothorax and somewhat more than twice as long, elongate, suboval, more narrowly rounded behind than in Jevettei, the humeral callus less prominent; grooves deep, very moderate; intervals nearly twice as wide as the grooves, each with a single line of shallow and well spaced, subtransverse punctures; sete inconspicuous, the basal clusters obsolete; abdomen polished as usual, with fine, deep and evidently separated punctures, becoming rather coarse though not at all dense at the sides, the medio-basal impression of the male small, oval and very shallow. Length (o’) 3.0 mm.; width 1.1mm. Kansas. Distinguishable easily from /evettei by the characters given above, and, from angusta, the typical locality of which is also Kansas, it may be known by the very much larger prothorax, with evidently converging sides and less parallel elytra, which are less distinctly wider than the prothorax; the latter in angusta is small, cylindric, arcuately rounding at the sides in apical two-fifths, only four-fifths as wide as the elytra and much less than half as long. Hesperobaris Csy. In this genus of very small, oval, convex species, the pygidium in the male is vertical and rather well developed; in the female, however, it is very short, not visible from behind and forms a part of the abdomen in even continuation of the convexity of the latter. In my original work on Hesperobaris, I placed with the type, named suavis and founded upon the female, a male specimen from Missouri; it appears now, however, that this Missouri specimen represents another species, the differences being unaccountable on the score of sex: Hesperobaris ovulum n. sp.—Evenly elongate-oval, strongly convex, rather shining, deep black, the legs and beak rufo-piceous; beak in the male moderately thick and arcuate, closely punctured and equal in length to the prothorax, the antennal club narrow, elongate-oval and pubescent throughout; prothorax a fourth wider than long, the sides feebly con- vergent and nearly straight, gradually slightly arcuate and feebly con- 374 MeEmorrs ON THE COLEOPTERA verging in about apical third, the constriction barely traceable; apex distinctly more than half as wide as the base, the lobe of the latter ex- tremely small and feeble; punctures coarse, deep and very close, though not in actual contact throughout, the medium smooth line wholly want- ing; scutellum small, rounded, not shining; elytra two-fifths longer than wide, oval, gradually obtusely acuminate behind, evidently wider than the prothorax and fully twice as long, the humeral callus obsolete; grooves deep, finely, feebly and closely crenulate basally; intervals one- half wider than the grooves, each with a single series of relatively very coarse but separated, perforate punctures, the third wider and with smaller, loosely confused punctures; sete very small though distinct, even, with no condensed spot; abdomen rather coarsely, deeply and somewhat closely punctate, with a distinct oval medio-basal impression in the male. Length (o) 2.2 mm.; width o.8 mm. Missouri (locality unrecorded). Differs from swavis in the shorter prothorax, without trace of the narrow subentire median smooth line of that species, also in the smaller basal lobe, and it also differs in the coarser, much deeper and perforate punctures of the interstitial series. The humeral callus is obsolete in ovulum, but is visible, though feebly developed, in suavis. Trichobaris Lec. This is a large genus, but the species are to great extent confused in collections. The character of the scaly vestiture is comparatively constant in each species, but it is subject to partial or even entire removal. Probably most of the species live on or near the ground, and the constant friction against detritus removes or breaks the scales, so that the general appearance of the insect may be greatly changed; there are several specimens at hand in which almost every vestige of the scaly covering has disappeared, a condition which does not seem to occur among the more arboreal scaly forms of the subfamily. The pygidium is much larger and usually more vertical in the male than in the female. The following seven species belong to the mucorea and vestita section of the genus: : Trichobaris striatula n. sp.—Elongate, subparallel, moderately convex, black throughout, including legs and antenna, slightly shining; beak subsimilar in the sexes, very little longer in the female and about as long as the prothorax, moderately arcuate, punctate, loosely clothed with narrow pale scales above and gibbous at base; prothorax but slightly wider than long, the sides feebly converging, more oblique at apex, deeply and densely punctate, the punctures forming longitudinal ruge: i ae BARINZ 375 transverse vestiture not very dense, the slender squamules becoming larger, denser scales at apex; elytra parallel, rounded at apex, four- sevenths longer than wide, about a fourth wider than the prothorax and much more than twice as long, the humeral callus very obtuse, feeble and closely sculptured; striz not very coarse, deep, punctured and subcrenate, the confused interstitial squamules hair-like and not at all dense, more or less oblique at the sides of the closely and strongly punctured intervals; scutellum and two basal thoracic spots as in trinotata; abdomen very densely clothed with broader and elongate-oval white scales, not sparser but less broad medially, where there is a feeble subbasal impression in the male, the usual polished spot at the middle of the third and fourth segments very abruptly defined in both sexes. Length (co 9) 4.0-6.0 mm.; width 1.7-2.3 mm. Arizona (Tucson). Seventeen specimens. There is much less sexual difference in the pygidium here than in trinotata; in the present species it is a little larger and more trans- verse in the male, with the pale scales confined to a single anterior transverse fascia, while in the female the pale scales are uniformly dense throughout; it is subvertical in both sexes. This species is rather closely allied to mucorea, but is slightly narrower, with more elongate elytra, having deeper strie and more convex intervals, and there is less sexual difference in the beak; the pygidial and abdominal characters are similar, but the scales of the under surface are not so broad as in mucorea, which latter seems to be confined to southern California, the neighboring parts of Arizona, and the upper part of Lower California. The coarsely punctate propleura are almost entirely denuded in both species. Trichobaris nanella n. sp—General characters nearly as in the pre- ceding, but much smaller in size, with shorter beak and distinctly shorter and more compact antenna, black, slightly shining, the legs rufo-piceous; beak less abruptly declivous above at base than in either striatula or mucorea, thick, feebly arcuate and almost as long as the head and pro- thorax in the female; prothorax shorter, fully a fourth wider than long, the sides parallel, rounding for a short distance anteriorly to the apical constriction; sculpture and smooth tumid median line nearly similar, the transverse vestiture very fine, sparse and inconspicuous, the basal spots and scutellum as usual; elytra shorter, less than one-half longer than wide, parallel, more abruptly obtuse at apex, the humeral callus more prominent; striz coarser and less crenulate; intervals only between two and three times as wide as the strie, nearly flat, confusedly punctato- rugulose, the pale hair-like scales still finer and sparser; pygidium similar; abdomen with the squamules slender and much less dense, in fact dis- tinctly separated. Length (2) 3.4mm.; width1.4mm. Arizona (near Tugson),—Tucker. One example. 376 MEMOIRS ON THE COLEOPTERA Distinguishable from the preceding by its small size, more abbreviated outline, finer, sparser and inconspicuous vestiture, shorter and more compact antenne and other characters. Trichobaris latipennis n. sp—Oblong, moderately convex, somewhat shining, black throughout; beak in the male very thick, only slightly arcuate, rapidly but arcuately declivous at base above, moderately clothed with pale scales, densely sculptured and fully as long as the prothorax, the antenne long; prothorax large, a fifth wider than long, the sides distinctly converging, feebly sinuate at the middle, gradually rounding anteriorly to the constriction; sculpture consisting of long sinuous ruge, the tumid smooth median line distinct; pale scales largely denuded in the type but slender; basal spots and scutellum of the trinotata type; elytra one-half longer than wide, parallel, circularly rounding in posterior fourth or slightly more, nearly a third wider than the prothorax, the humeral callus moderate; striz not coarse, deep, not clearly punctate, the intervals convex, finely, confusedly and sub- rugulosely punctate, the fine hair-like pale scales unusually short, not close and rather inconspicuous; abdomen nearly as in mucorea and striatula, impressed broadly toward base in the male, the fifth segment similarly having a small medial ligula at tip. Length (co) 5.7 mm.; width 2.4mm. Texas. Resembles striatula somewhat but with broader elytra and still more convex intervals, larger and slightly more transverse pro- . thorax and still stouter beak. Trichobaris apicata n. sp—Oblong-elongate, rather convex, black, closely covered with slender whitish hair-like scales, not in mutual con- tact but obscuring the integuments, with three denuded spots as in trinotata; the scales become larger and dense in an apical fascia on the pronotum; on the under surface and legs throughout they are large, oval and in mutual contact, except on the subdenuded propleura and in the usual subapical polished spot of the abdomen; beak in the male rather thick, squamose, feebly arcuate and barely as long as the pro- thorax, the upper surface abruptly almost vertically declivous at base; prothorax a sixth wider than long, the feebly convergent sides subsinuate medially, rounding anteriorly to the constriction, the punctures coarse, dense and rugulosely confluent; elytra scarcely one-half longer than wide, parallel, rounded at apex and fully a fourth wider than the prothorax, the humeral callus not evident; strie and sculpture largely concealed by the vestiture, the striz sometimes indicated by slight parting of the latter; abdominal depression of the male very feeble, densely covered with large and unmodified scales. Length (oc) 4.7-5.7 mm.; width 1.9-2.2 mm. Utah (St. George) to Columbus, Texas, and San Diego, California. Eight specimens, the female unrepresented. Allied rather closely to mucorea, but with denser and more con- spicuous vestiture, also by the form of the short ligula at the apex BARINAE 377 of the fifth ventral in the male; this in mucorea is only slightly wider than long, while in apicata it is strongly transverse. Trichobaris arida n. sp.—Subparallel, with rather small but subparallel prothorax, black, rather dull in lustre, the vestiture fine, not at all dense, whitish but not concealing the integuments, arranged as usual in trinotata but less distinct, close-set on the abdomen though more lineiform than in mucorea; beak (c') barely as long as the prothorax, or (9) a little longer and thinner, sculptured and clothed as usual, arcuate, the upper surface less abruptly declivous at base than usual; prothorax a third or fourth wider than long, the sides parallel and nearly straight, obliquely rounding in about apical third, the constriction feeble; punctures coarse, confluent, the longitudinal ruge usually evident, the tumid median line obsolescent basally; elytra cylindric, with parallel straight sides, rapidly very obtuse in apical fifth, a third wider than the prothorax and two and one-half times as long (Q), a little less (o"), the humeral callus very obtuse; striz moderate, the intervals flat and with the usual confused sculpture; abdomen with the subapical polished spot involving nearly half of the fifth segment, the apical ligula of the male as in mucorea. Length (o' 9) 4.0-4.2 mm.; width 1.6-1.8 mm. Texas. Levette collection. Two examples. es ie] As in trinotata, the male is rather stouter than the female. This species differs from mucorea in its smaller size, smaller, shorter and more parallel prothorax and more slender and lineiform scales of the abdomen. e Trichobaris jejuniosa n. sp—Parallel, moderately convex, deep black and rather dull; beak in the female moderate in thickness and feebly arcuate, normally sculptured and clothed and not quite as long as the head and prothorax, the upper surface rapidly declivous at base; pro- thorax between a third and fourth wider than long, the sides nearly parallel and barely at all arcuate, rounding anteriorly to the distinct constriction; punctures close-set but differing from those of the pre- ceding species in being circular, deep and not crowded, the fine tumid smooth line evident; lineiform transverse squamules very fine, not con- cealing the integument, the denuded basal spots and scutellum as in trinotata; elytra barely one-half longer than wide and only a fifth wider than the prothorax, parallel, rounding in about apical third, the humeral callus large, obtusely subprominent; vestiture of very short pale hair- like scales not concealing the surface; striae moderate but deep; intervals broad, flat, rather coarsely and densely punctato-rugose; abdomen with rather coarse punctures not filled by the scales, which are therefore isolated, and, within the concavity of the male becoming linear and rather widely separated, the terminal ligula of that sex short, small and subtriangular. Length (o’) 4.4 mm.; width1.7mm. A single example without label in the collection of Levette, probably from Colorado. This species is not closely related to any other, differing in the distinct circular punctures of the prothorax, and, from any of the ‘ 378 MEMOIRS ON THE COLEOPTERA preceding, in peculiarities of abdominal vestiture; the humeral protuberance is more prominent than usual though rounded. The propleura are denuded in two separated spots. *Trichobaris rugulicollis n. sp—Stout, subparallel and only feebly convex, black and feebly shining where denuded; vestiture of lineiform whitish scales coarser than in mucorea but not denser, more condensed at the thoracic apex, with the denuded spots as in frinotata, the under surface with large and oval dense scales, denuded in two separated pro- pleural spots, the polished abdominal spot confined to the third and fourth segments; beak (@) short, arcuate, stout and cylindric, barely as long as the prothorax, partially squamulose and closely punctate, the upper surface not abruptly declivous at base; prothorax a fourth wider than long, the sides distinctly converging, moderately and evenly arcuate, more rounding for a short distance anteriorly to the constriction; punc- _tures strong, in great part forming longitudinal rugulosity, the smooth median line cariniform; elytra broad, parallel, rapidly very obtuse at apex, three-sevenths longer than wide, two-fifths wider than the pro- thorax and two and one-half times as long, the humeral angles obtusely subprominent; strie moderate, punctate, the broad and nearly flat intervals with the usual rugose sculpture; squamules oblique at the sides ~ of the intervals as in mucorea and others of this section. Length (2) 5.8 mm.; width 2.6 mm. Mexico (Durango City, Durango),—Wick- ham. Differs from mucorea in its relatively much shorter and broader elytra, shorter and stouter beak and broader lineiform squamules of the entire upper surface. It is interesting, on forming series of the males and females of trinotata, to observe the sexual differences, which are peculiarly marked in that species, occurring rather abundantly over the eastern parts from Kansas to New England and southward to Key West, Florida. The male is notably shorter and broader than the female, the outline in the latter sex being peculiarly elongate-oval and narrow; at first sight these series might be thought to represent different species. The terminal abdominal ligula of the male is extremely small and feeble and is obtusely angulate. The following species is evidently allied to ¢rinotata but is much smaller and more slender: Trichobaris impotens n. sp.—Slender, cylindric, moderately convex, deep black, barely at all shining; the vestiture of the upper surface is loose, not concealing the integuments and consists of small lineiform scales, even smaller and finer than in érinotata; on the under surface they are but little broader, isolated, but denser and a little broader at the extreme sides, the propleura denuded in two spots; beak arcuate, a BARINE 379 little thicker and less smooth in the male, more declivous above at base but not very abruptly, as long as the head and prothorax in the female; antennal club rather large; prothorax shorter, smaller and more cylindric, more than a fourth wider than long, the sides parallel and straight, ob- lique and feebly rounding in nearly apical half; punctures strong, in great part longitudinally rugulose, the smooth median line not very distinctly defined, although somewhat tumid; elytra parallel, obtusely rounded behind in more than apical third, one-half longer than wide, nearly a fourth wider than the prothorax, the humeral callus moderate though distinctly prominent; strie moderate, the intervals nearly flat and rugulose, the squamules not oblique at the sides of the intervals; abdominal depression of the male with narrow, sparse squamules, the terminal ligula very short and broadly angulate; subapical quadrate polished spot involving also about half of the length of the fifth segment. ‘Length (of Q) 2.8-3.1 mm.; width o.9-1.1 mm. North Carolina (Black Mts.),—Beutenmiiller. 7 — C.) re Besides the much smaller size and more slender form, this species differs from frinotata in the shorter and basally more parallel pro- thorax, shorter, basally less declivous upper surface of the beak and much shorter legs. In both species the pygidium of the male is vertical and well developed, while in the female it is not only smaller but more oblique and more concealed by the elytra. This is by far the smallest species of the genus known thus far. The next four species are allied more or less closely to compacta Csy., having a short and more convex form of body and notably dense vestiture: a4, Trichobaris brevipennis n. sp—Oblong, convex, black, clothed with brownish-white scales, which are parallel-sided in form and very close, though not in actual contact above, much larger and broadly oval, whiter in color and in mutual contact beneath, a little smaller and less dense though oval in the feeble male abdominal impression, the third and fourth segments not entirely nude at the middle, having a thin line of hair-like scales at the apex; scutellum denuded, the two basal spots of the pronotum very small; beak in the male short, thick, densely Squamose, angularly gibbous at base above and not quite as long as the prothorax, the antenne compact; prothorax a third wider than long, the sides feebly converging to beyond the middle, then more rounded and gradually convergent to the apex, the constriction obsolete; punctures very dense and not distinctly defined under the vestiture; elytra three- sevenths longer than wide and parallel, rounding in about apical third, almost a third wider than the prothorax and more than two and one-half times as long, the rounded humeri but slightly tumid; vestiture concealing the sculpture, the strie indicated by fine and obscure partings, the scales at the sides of the intervals not oblique; terminal abdominal ligula of the male very minute. Length (co) 4.5 mm.; width 2.15 mm. Cali- fornia (southern—the locality not more definitely indicated). 380 MEMOIRS ON THE COLEOPTERA Allied to compacta but differing in its more abbreviated form and shorter prothorax, elytra and beak; the scales of the upper surface are more broadly linear in form and are still denser. Trichobaris retrusa n. sp.—Oblong-suboval, moderately convex, black, the vestiture of the upper surface consisting of close-set lineiform scales, which are however much less dense and not so broad as in the preceding, the basal thoracic spots very small; the under surface is nearly as in brevipennis and compacta, except that the dense scales are less broadly oval; beak in the male feebly arcuate, rather thick, densely squamulose, angularly gibbous above at base and as long as the prothorax, which is formed nearly as in brevipennis but rather less abbreviated; punctures coarse and close but separately circular and not forming rugule; elytra not quite one-half longer than wide, parallel, obtusely, evenly rounding in somewhat less than apical third or fourth, wider than the prothorax and evidently more than twice as long; strize moderate, sometimes clearly indicated by parting of the rather close-set scales, which however are less dense than in any of the other species of the compacta section. Length (o) 4.6-5.0 mm.; width 1.8-2.2 mm. Arizona (Tug¢son),— Tucker. Three specimens. The vestiture of the three species brevipennis, compacta and retrusa is of the same character but decreases in density in the order named, being very densé in the first, a little less so in the second and very notably so in refrusa. The prothorax is smaller and shorter than in compacta, but not so abbreviated as in brevipennis, and the beak of the male is less thick than in either of the other two. The species which immediately follows differs from either of the three just mentioned, in having the scales which clothe the feeble abdominal impression of the male as large and dense as those toward the sides: Trichobaris utensis n. sp.—Oblong, somewhat convex, black, very closely clothed above with rather broad but lineiform gray scales, the striz only indicated by slight obliquity of the scales along the sides of the intervals, the pronotal spots very small; scales of the under surface dense, oval, fan-shaped on the propleura; beak in the male nearly as long as the head and prothorax, thick, densely squamose and angularly gibbous on the upper surface at base; prothorax a fourth wider than long, the sides rather strongly converging and nearly straight for three- fifths, then rounding and more convergent to the apex; sculpture dense, obscured by the broad linear scales; elytra two-fifths longer than wide, nearly a third wider than the prothorax and two and one-half times as long, parallel, the sides gradually arcuate in posterior two-fifths to the obtusely rounded apex; sculpture concealed by the very close though not contiguous scales; pygidium convex, with long and close, suberect scales above, smaller and sparser beneath; median third of the fifth BARINE 381 ventral with small and sparse lineiform scales, the ligula minute and feeble. Length (o’) 4.3 mm.; width 1.9 mm. Utah (St. George),— _ Wickham. The very close covering of rather broad gray lineiform scales, oblique, and intermatted at the sides of the strial intervals, as well as peculiarities of abdominal vestiture, as related above, will serve to distinguish this species in the compacta section of the genus. The following is the largest of the compacta series and has the scales of the male abdominal impression nearly as large as those at the sides, though distinctly separated: Trichobaris densata n. sp.—Oblong, rather convex, black, the scales of the upper surface closely decumbent, ochreous and so broad as to approach the oval in form, dense as possible without being in mutual contact, the strie indicated by feeble obliquity of the scales at the sides of the intervals; two basal thoracic spots more developed than in others of the compacia section; scales of the under surface and femora large, oval, very dense and yellowish-white in color; beak very thick, slightly arcuate and densely squamose, differing but little sexually, barely as long as the prothorax in the female, angularly gibbous above at base; pro- thorax less transverse than in the others, barely a fifth wider than long, nearly similar in outline, the sinuation of the sides near the middle rather more distinct; dense coarse sculpture concealed by the vestiture; elytra longer than in any other of the compacia section, three-fifths longer than wide, the parallel sides more gradually rounding behind from near the middle, barely a fourth wider than the prothorax and between two and three times as long; humeri barely inflated. Length (o’ 2) 5.0-5.8 mm.; width 2.2-2.45 mm. California (San Diego). Four examples. To be identified by the short and very thick beak, dense vestiture, longer, more gradually rounded and less apically obtuse elytra and more developed basal spots of the pronotum, among other char- acters. The Mexican soror of Champion, is well represented in my col- lection by three examples taken by Wickham near Durango City. It is a stout species, clothed very closely above with broad lineiform ochreous-brown scales, the strize being indicated by feeble obliquity of the adjacent scales, the two basal thoracic spots well developed. The whitish scales of the under surface are large, oval and dense, and, in the feeble abdominal impression of the male, become only narrowly separated and a little less broad; the polished subapical area is not continuous, both the third and fourth segments having plentiful scales except basally, and the fifth segment is faintly and 382 MEMOIRS ON THE COLEOPTERA minutely tumid at apex, the ligula obsolete, being represented only by a feebly arcuate part of the margin. The chief peculiarity of the species resides in the unusually long, nearly straight and slender beak of the female, that of the male normally thick though rather longer than the head and prothorax, densely squamulose and angularly gibbous above at base. The following is another species of the soror section, being smaller and much narrower, with finer and much less dense vestiture above: *Trichobaris pueblana n. sp——Oblong, rathe1 convex, black, clothed above with slender reddish-gray decumbent scales, by no means so close- set as in soror, the abdominal concavity of the male with scales nearly as dense as those at the sides but of narrower form; beak (co) nearly as in soror but shorter and slightly less thick, or (Q ) also as in that species but still straighter and less thickened toward base; prothorax nearly similar, small, a fourth wider than long, the sides strongly converging, rounding and oblique in apical third, the sculpture apparently coarser and in the form of long sinuous rugule; elytra one-half (o’) to two- thirds (2) longer than wide, parallel, rapidly very obtuse at apex, a third (o’) to a fourth (9) wider than the prothorax, the striz coarse and deep, indicated by feeble partings of the vestiture when normally clothed, the intervals confusedly punctato-rugose; abdomen nearly as in soror, the fifth segment narrower and more rounded at apex. Length (o 9) 4.6-5.0 mm.; width 1.8-2.15 mm. Mexico (Puebla). Com- municated by the Mexican National Museum. Three examples. The much narrower outline, smaller size and finer, less dense vestiture of the upper surface, will readily distinguish this species from the rather closely related soror. The male is relatively broader than the female, a feature not observable in soror. A small section, represented by texana, cylindrica and insolita, differs from any of the preceding, excepting the érinotata section, in the narrower and more cylindric form of the body, and from all others it differs in having no small denuded spots at the base of the pronotum. The scales of the upper surface are usually more oval and denser, but in specimens collected by Wickham at Puente de Ixtla, they, though rather dense, become much more lineate in form. Mr. Champion unites pellicea Boh., with texana Lec., but if these Ixtla specimens represent the former—and from this locality cited for it also in the ‘‘Biologia,’’ they would seem to be so considered by Mr. Champion—it is quite impossible for me to agree; the prothorax in pellicea has a peculiarly transverse, subquadrate- oval form, with parallel and arcuate sides, notably different from BARINE 383 _ the form of that part in fexana, and the vestiture is quite different, - owing to the dense oval scales of texana. The following is another species distinctly different from texana: Trichobaris amplicollis n. sp—Oblong-elongate and parallel, convex, _ black; upper surface clothed very densely with elongate-oval ashy scales, concealing the surface, transverse as usual on the pronotum, the elytral striz indicated by fine and feebly marked partings; under surface with very dense oval or truncate scales of the same color, the median basal part of segments three, four and five glabrous; beak in the female arcuate, rather thick, densely squamulose and as long as the prothorax, gibbous on the upper surface at base; prothorax transverse, not quite one-half wider than long, the sides parallel, feebly arcuate, rounding in about apical third; sculpture deep and moderately coarse, dense but not very coalescent; elytra three-fifths longer than wide and parallel, gradually rounding behind, scarcely a fifth wider than the prothorax and between two and three times as long, the humeri rather prominent. Length (9) 5.4 mm.; width 2.2 mm. Texas (Terrell). Distinguishable from texana by the much more elongate elytra and shorter prothorax; in both species, a slightly denuded crevice between the bases of the prothorax and elytra near the humeri, replaces the more discal denuded spots of the trinotata type. Rhaptinus n. gen. The body in this genus is subcylindric but not slender, convex, the integuments nude, excepting sharply defined dense patches of scales, variously disposed according to the species. The beak is stout, cylindric, slightly arcuate, about as long as the prothorax, distinctly sculptured and may sometimes be tumid and densely scaly at base above, as in the preceding genus; the antenne are nearly similar but smaller, the club oval and pubescent. The prothorax is rapidly contracted at apex and often subtubulate, parallel or rounded at the sides, the punctures strong, not dense, and very notably evanescent medio-basally as in many Madarids, the scutellum rounded or subquadrate, sometimes feebly canalicu- late. Elytra rather short, parallel, only slightly wider than the prothorax, obtuse at apex and without humeral callus, the strie fine, sometimes coarser and crenate basally; the intervals are flat and with minute sparse punctures. Pygidium vertical and distinct in both sexes. Prosternum flat, unmodified, separating the cox by their own width to a little less, the anterior and post-coxal part divided by a suture at the middle of the coxe, the hind margin 384 MEMOIRS ON THE COLEOPTERA transverse, not intruding in any way upon the mesosternum. Femora unarmed, the third tarsal joint broad and bilobed, the fourth joint long and the claws closely united toward base. The male has a medio-basal abdominal impression, which sometimes bears a central prominence bristling with slender scales. The type of this interesting genus is Baridius quadrimaculatus Boh., of Cuba, and the Porto Rican Baris torquata Oliv., also belongs to Rhaptinus, which is in all probability an essentially Antillean type. It has many bonds of affinity with Trichobaris, although having a very different system of sculpture, vestiture and striation. Orthoris Lec. The distinguishing characters of this genus are the slender and often nearly straight beak, rather approximate anterior cox, oblique pygidium in both sexes, elongate antennal club and absence of the terminal tibial spur. The body is oblong, clothed sparsely with coarse whitish hair, the prothorax small and subconical and the tarsal claws are free. More careful observation shows that the species of Orthoris are rather numerous, those now at hand being the following: Beak long, very much longer than the head and prothorax........... 2 Beak short in both sexes, not or but little longer than the head and PPOthOrax. ...\. apse sees eee se ee wees oa) ott. 2 7 2—Beak abruptly tumid dorsally at base. Body oblong, shining, deep black throughout; beak in the female three-sevenths as long as the body, just visibly arcuate, cylindric, strongly sculptured and rather slender, the antenne barely behind the middle, the club cylindric, not quite as long as the funicle; prothorax over a fourth wider than long, the converging sides feebly, evenly arcuate throughout; apex more than half as wide as the base; punctures strong, separated by their own diameters, without median smooth line; elytra oblong, with parallel straight sides, obtusely rounded at apex, two-fifths wider than the prothorax and more than three times as long; stri@ deep, moderate; intervals flat, with distinct and confused though sparse punctures. Length (2) 3.4mm.; widthi1.3mm. Wyoming (@heyenne) prereset ie ewe oo ee ee tumidirostris n. sp. Beak not abruptly tumid though sometimes slightly prominent at the extreme base, due to a rapid turn of the surface toward the head.. .3 3—Beak relatively longer, nearly straight...................sseeeee 4 Beak moderately long and evenly, though very feebly, arcuate; descrip- tions drawn from the female... .............0.-+++ ses 5 4—Body larger, deep black, shining, clothed as in crotchi; beak in the female not quite half as long as the body, slender, scarcely visibly | } i BARIN= 385 arcuate, with bristling vestiture above behind the antenne, which are at the middle, the club much shorter than the funicle; prothorax nearly as in the preceding but with the punctures narrowly though evidently separated and distinctly coarser; elytra shorter, oblong, much wider than the prothorax and distinctly less than three times as long, the interstitial punctures small, uniserial on many of the intervals; abdomen finely, sparsely punctulate. Length (2) 3.3- 3.5 mm.; width 1.35-1.4 mm. Colorado (Colorado Springs). tenuirostris n. sp. Body very much smaller and more slender, black, rather shining, the elytral hairs subuniserial; beak in the female virtually straight, nearly half as long as the body, pubescent and bristling above behind the antenne, which are at the middle, the club not quite as long as the funicle; prothorax bristling with long sparse hairs, only a little wider than long, the sides feebly converging and broadly arcuate: apex two-thirds as wide as the base; punctures moderate and rather well separated; elytra parallel, nearly three times as long as the prothorax and about a third wider; interstitial punctures fine, con- fused. Length (9) 2.6 mm.; width o.9 mm. California (locality PR CROTCLEU) VaF ey flea scabs Seve Hele Ahead ee cteteremesrale tenes angustula n. sp. 5—Pronotal punctures notably coarse and almost in mutual contact. Body stout, moderately shining, black; beak in the female two- fifths as long as the body, slightly thickened and notably bristling toward base, the antenne near the middle, the club slightly shorter than the funicle; prothorax fully a third wider than long, the con- verging sides broadly arcuate; apex fully half as wide as the base; elytra oblong, a fourth wider than the prothorax and evidently less than three times as long; stri# rather coarse; intervals not quite flat, the fine punctures confused, rather strong and somewhat more close-set than usual, the squamules in about two irregular series. Length (2) 3.5 mm.; width 1.6 mm. California (locality unre- PeaT Gd) BM acs «ahah ayes a oss, 3 age) coined eheenenecs o Sreceuene robustula n. sp. Pronotal punctures everywhere distinctly separated; body not so 6—Integuments more shining, the pronotal punctures rather coarse and deep; beak (2 ) nearly two-fifths as long as the body, almost straight, the upper surface curving rapidly upon the head at base, or (o") very little shorter and somewhat more evidently arcuate; antenne at the middle (@), a trifle beyond (co), the beak in both sexes in great part with very bristling pubescence; prothorax small, nearly a third wider than long, the converging sides arcuate; elytra more gradually rounded behind than usual, two-fifths wider than the prothorax and distinctly more than three times as long, the humeri rather prominent; interstitial punctures confused and well separated though rather strong. Length (o' 9) 3.6-3.8 mm.; width 1.35-1.4 mm. California (Ontario). Three specimens...... captiosa n. sp. Integuments only moderately shining, deep black, the size smaller than in captiosa; beak rather thick, slightly but evidently arcuate, slightly longer than the prothorax (0), distinctly so (2), almost similar in T. L. Casey, Mem. Col. IX, Feb. 1920. 386 MEMOIRS ON THE COLEOPTERA the sexes; antennal club about as long as the funicle (co) or little shorter (2); prothorax larger than in the preceding, the arcuate sides somewhat less converging; punctures not quite so coarse, nar- rowly but distinctly separated; elytra shorter, of the usual oblong form, more rapidly obtuse at apex than in captiosa, a third wider than the prothorax and not quite three times as long; interstitial punctures finer and rather sparser, confused, the suberect setiform squamules a little shorter; male abdomen moderately impressed medio-basally through nearly the first two segments. Length (Sf 2) 3.2-3.6 mm.; width 1.2-1.35 mm. California (southern coast regions)., Ninespecimens). «-.....-.... os. see crotchi Lec. 7—Body smaller, not so stout, shining, black; beak subsimilar in the sexes, feebly arcuate, bristling and densely sculptured, more slender than in the preceding, barely (co) or distinctly (2) longer than the head and prothorax, the antennal club fully as long as the funicle or longer, especially in the male; prothorax less strongly conical, the apex more than half as wide as the base, the sides subevenly but rather strongly arcuate; punctures notably coarse and deep, nar- rowly separated; elytra in outline as in the preceding but fully two- fifths wider than the prothorax and about three times as long; striz rather coarse and deep; intervals equal, barely more than twice as wide as the grooves, not quite flat, with stronger and subuniserial punctures; male abdomen very feebly impressed medio-basally. Length (o' Q@) 2.8-3.1 mm.; width 1.15-1.25 mm. Arizona (probably southern). Two examples....... ....cylindrifera Csy. These various forms are mingled together in most collections, but closer study shows that there are a number of very evident structural differences among them. Gerezus Pasc. As previously stated (Ann. N. Y. Acad., VI, p. 573), under sub- genus IV, there is a certain peculiarity in mandibular structure, which distinguishes Centrinus senilis Gyll., from any of the allied forms, they being divaricate apically, with more or less arcuate inner margin. This should be considered a generic, rather than subgeneric, character, and affords a beginning for the division of the very numerous small Centrinus-like North American species into separate genera. Centrinus senilis was made the type of Gereus by Pascoe, and several specimens sent me by Mr. Champion show that the Arizona species, which I described in some detail under the name senilis, is not that species at all. I therefore assign to ita new name as follows: Gereus balteatus n. sp.— Centrinus senilis Csy., nec Gyll. (I. c., p. 589); senilis Chmp. (Biol. Cent.-Amer., IV, 5, p. 265). Arizona (Sta. Rita Mts.). BARIN-E 387 The type of this species is a female and is very much smaller than senilis Gyll.; it differs also in the more narrowly oval outline and much finer sculpture. The black elytral maculation takes the form of a regular transverse submedian fascia from side to side, _ interrupted only at the suture and a broader one near the apex, also Peuturally interrupted and not clearly attaining the sides. The f beak in the female is very much shorter, with the antennz less : post-median in insertion than in senilis. , j The following are two additional species of this genus: *Gerzus omissus n. sp.—Elongate-rhomboidal, rather convex, slightly shining, dark piceous-brown in color in the type; beak in the female evenly arcuate, slender, gradually somewhat thickened, as well as laterally sulcate and feebly punctate, basally, as long as the elytra, the long slender antenne inserted at the middle; prothorax a third wider _ than long, the sides evenly and rather strongly arcuate, becoming parallel basally, the apical tubulation strong, three-sevenths as wide as the base, the basal lobe rather abrupt; punctures coarse, close but not in mutual contact, each with a long and slender, yellowish-white scale; elytra arcuately acuminate from the base, much wider than the prothorax and not quite twice as long; strie moderate, rather deep, minutely punc- tate; intervals three times as wide as the strie, rather finely, sparsely and confusedly punctate, the punctures bearing each a long slender yellowish scale, coarser than those of the pronotum, and replaced in a dark submedian and subapical fascia, both interrupted suturally and not attaining the sides, by finer obscure fulvous squamules; under surface coarsely punctate and with linear but coarser and closer pale squamules; legs long and rather slender. Length (2) 4.5 mm.; width 1.8mm. Mexico (Temax, in N. Yucatan),—Gaumer. A single example was kindly communicated by Mr. Champion. This species differs from senilis, which is well represented before me from Guerrero, Jalapa and Managua, in its slightly smaller size, distinctly narrower form and especially by the coarser and more sharply and individually defined punctures of the prothorax. The antennz of the female are inserted at the middle of the beak and not well behind, the middle as they are in senilis. *Gereus bellax n. sp.—Elongate-rhomboidal, rather convex, slightly shining, piceous-black; beak nearly as in the preceding, slender, as long as the elytra, with the antennz inserted at the middle (co) or at three- _sevenths (2); prothorax a fourth to third wider than long, the con- verging sides evenly arcuate to the short and feebly defined apical tubu- ‘ation; punctures somewhat coarse but shallow, dense and sometimes subcoalescent, the lustre dull, the vestiture of long slender whitish scales distinct but loose; elytra arcuately acuminate, with rather tumid humeri, 388 MEMOIRS ON THE COLEOPTERA a fourth (o") or a fifth (2 ) wider than the prothorax and fully twice as long; striz moderately coarse, deep, the intervals rather more than three times as wide as the striz, the punctures small, sparse and confused, the squamules long, sparse and whitish, replaced by fulvous squamules in two moderate and not well defined spots on each elytron; under surface with the stout lineiform whitish squamules more or less dense. Length (So 9) 4.7-5.7 mm.; width 2.1-2.4 mm. Mexico (Puebla). Distinguishable from senilis by its smaller prothorax and sparser, more whitish lineiform squamules of the upper surface. The ante- coxal spines of the male are shorter in the type, although otherwise similar and the dark spots on the elytra are much less definite. Pachygereus n. gen. The type of this proposed genus is a rather large, oblong-oval species, named Centrinus levirostris by LeConte. The beak is relatively rather short and stout, at least in the male, the only sex known to me, the antenne only moderately elongate, the club rather broadly oval, with its first joint constituting about half the mass, the mandibles small, coming together along a straight internal line. The prothorax is relatively large, densely but not coarsely punctured, the anterior coxe rather narrowly separated, the spine before them in the male erect basally, flexed forward thence to the tip, and, between them, there is a large and very deep perforate fovea. The elytra are oblong, narrowing near the apex and the legs are long, the third tarsal joint very broad and strongly bilobed. The following species has been heretofore overlooked: Pachygereus zsopus n. sp.—Oblong-oval, convex, densely sculptured, the vestiture of pale yellowish elongate-oval scales dense on intervals 1-5-9, and moderately dense on 3-7, also dense in a sublateral vitta on the prothorax; under surface with more or less dense oval yellowish- white scales; integuments rufo-ferruginous; beak in the male barely longer than the head and prothorax with the antenne inserted at the middle, smooth and minutely, sparsely punctured apically, coarsely and densely at the sides basally; prothorax a third wider than long, the sides strongly convergent and evenly arcuate from base to the apical tubulation, which is two-fifths as wide as the base; punctures moderate, very dense throughout and partially coalescent, without evident median smoother line; scutellum small, subquadrate, the basal thoracic lobe rounded, rather abrupt; elytral strie rather coarse and deep; intervals densely and confusedly punctate, alternating in width, the narrower not three times as wide as the strie; outline evenly elongate-oval, one-half longer than wide, slightly wider than the prothorax and somewhat more than twice as long; abdomen broadly, feebly impressed basally in the BARINE 389 male. Length (o’) 4.4 mm.; width 1.82 mm, Nebraska (Holt Co.). One example. Differs from /evirostris in its much smaller size and narrower form, more evenly elongate-oval elytra and paler coloration; the elytral striz are much less coarse than in Jevirostris, where also the strial punctures are far coarser and more conspicuous. Pycnogereus n. gen. The body in this genus is short, thick and strongly convex, with loose coarse punctuation and vestiture as a rule, the strong thoracic tubulation deeply constricted. The beak is thick in the more typi- cal forms, the antennal club nearly as in the preceding, and the male has two very moderate erect ante-coxal spines, the surface between them flat, but anteriorly there is a deep transverse fossa. The basal thoracic lobe is well marked, the scutellum oblong, emarginate behind, the elytral striz coarse and deep, the intervals moderate, with coarse, confused sculpture and clothed with small slender dark squamules, with large oval or broad linear pale scales somewhat evenly intermingled, the linear scales of striatirostris much denser than the oval scales of modestus and tortuosus. Besides these three species, the genus will possibly comprise the Central American arcuatirostris of Champion, although in my single female representative from Villa Nueva, Guatemala (3000 ft. elev.), the more strongly arcuate beak is very much more slender, relatively longer and with the point of antennal insertion much more basal; the sparsely scattered pale scales in this species are narrowly linear. The type of the genus is Centrinus modestus Boh. Gerzopsis n. gen. The type of this genus is Gereus tumidirostris Chmp., from Sinanja, on the Atlantic slope of Guatemala, a specimen of which I am glad to have from the author. In general appearance tumidi- rostris, is remarkably isolated among the other allies of Gereus, its elongate-rhomboidal outline and convex, polished and feebly sculptured integuments, with a few scattered whitish scales on the elytra, becoming dense beneath, and narrow, rectilinearly conical prothorax, being notably exceptional external features. The beak is long, slender, arcuate, tumid toward base, with the antenne 390 ‘MEMOIRS ON THE COLEOPTERA inserted only a little behind apical third in the male, the club narrowly oval, with its basal joint unusually long, constituting about two-thirds of the mass. The anterior coxe are narrowly separated, the spines arising before them sharp, moderate in length and nearly straight. The prosternal surface is wholly unmodified, excepting a fine feeble canaliculation, barely observable under the dense crust of pale scales. The humeral prominence is distinct, the scutellum small and subquadrate, enlarged slightly toward the emarginate apex. The third tarsal joint is greatly dilated and bilobed, the mandibles very small but conforming well with those of Centrinaspis and allied forms. Linogerzus n. gen. A number of tropical species may be separated under this name; they differ greatly from any of the other associable forms, in having clearly defined dense vittee of pale scales on the upper surface, rendered conspicuous on the black background. The body is rhomboid-oval, the prothorax not abruptly constricted at apex, the beak rather long, usually more or less thickened at base in the female, the antenne long with narrowly oval club, the anterior coxee moderately separated, the prosternal surface not greatly modified, and the ante-coxal spines of the male are long, straight and porrect as in Jineellus, or shorter and less porrect as in ¢rivittatus. The type of the genus is Centrinus lineellus Lec. Gereus teniatus Chmp., will also enter this genus and probably albolineatus as well. There are several species allied to lineellus, of which the following is one that seems to have been overlooked hitherto: *Linogereus merens n. sp.—Subrhomboid-oval, convex, black, densely clothed throughout with broad oblong decumbent scales, which are white on the prothorax, excepting a narrow brownish-black vitta at each side and two submedian, which are much narrower than the white vitte; on the elytra the second interval is densely white throughout, the third also, except in basal fifth, the fourth from base for four-sevenths, and the sixth, seventh and eighth almost entirely, white, the sutural and fifth are virtually wholly brownish-black; the under surface has dense whitish scales throughout, these radiating on the prosternum froma point near the apex; beak in the female strongly arcuate, cylindric, scarcely at all thickened basally and slightly longer than the head and prothorax, loosely punctate, the antenne inserted at the middle; prothorax a third wider than long, the sides evenly converging and very evenly arcuate from base to apex, the non-tubulate apex half as wide as the base, the BARINA 391 _ median basal lobe rather abrupt, rounded; elytra but little longer than wide, arcuately acuminate from the base, slightly wider than the pro- thorax and two-thirds longer, the humeri moderately prominent. Length (2) 3.0 mm.; width 1.28 mm. British Honduras (Rio Hondo),— Blancaneau. Received from Mr. Champion. Differs from two species, which are both labeled /ineellus, in its smaller size and different disposition of the dense white vittee of the elytra; in both the forms referred to, supposed to represent lineellus Lec. (erroneously described as from California), the fourth strial interval is densely whitish only in basal fourth, and the white scaly crust of the sixth only extends to barely beyond the middle of the length. e Centrinaspis n. gen. This genus, the type of which is Centrinus perscillus Gyll., is a very large one. The body is of moderate to very small size, ovulate and convex, suboval or rhomboidal, the surface as a rule densely clothed with decumbent scales, lineiform or suboval, and the pro- sternum of the male has an erect spine, very moderate to small in size, or frequently wholly wanting. The anterior coxe are generally rather well separated, and the prosternal surface unmodified, excepting sometimes in an anterior pit as in podagrosa. Besides perscillus, our fauna includes perscitus and picumnus Hbst., neglectus Lec., and albotectus, grisescens, finitimus, exulans and clarescens Csy. Among the Mexican representatives are pugnax, podagrosus, crucifer, basinotatus and submaculatus of Champion, all originally referred to Gereus, and also Centrinus lentiginosus Boh. Centrinaspis vitula n. sp.—Elongate-oval and rather convex, black throughout and clothed closely with elongate slender yellowish scales, mingled with some darker ones on the elytra, the under surface with denser and more oval whitish scales; beak arcuate, about half as long as the body, rather thick and cylindric, with the antenne inserted at four-sevenths (0), or thick basally but very thin and smooth beyond the antenne, which are inserted near the middle, (9), antennz slender, the first funicular joint as long as the next three; prothorax a fourth (o) to a third (Q) wider than long, the sides feebly converging and nearly straight, obliquely rounding in apical third, the apex but feebly con- stricted and much less than half as wide as the base; punctures coarse and in mutual contact but not coalescent; median line narrow, subentire, smooth; elytra two-fifths (2) toa little more (co) longer than wide, slightly wider than the prothorax and not quite twice as long, arcuately and obtusely acuminate throughout; strie deep, the intervals coarsely, 392 MEMOIRS ON THE COLEOPTERA closely and confusedly punctate, nearly four times as wide as the strie; male with short thick conical spines before the coxe, the prosternum not excavated anteriorly. Length (o' 2) 4.0-4.2 mm.; width 1.8 mm. Ohio and Kentucky. Differs from neglectus in its larger size and more broadly oval form, with the beak in the female more rapidly thinner beyond the antenne and the pronotal vestiture not abruptly dense toward the sides. It more closely resembles grisescens, especially in the struc- ture of the beak of the female, but the prothorax is not so abbrevi- ated and is more coarsely punctate; the scales of the elytra are similarly intermingled with darker scales, but all are narrower than in. grisescens, which is known solely thus far from the mountains of western North Carolina. Centrinaspis furtiva n. sp—More abbreviated and broadly suboval, moderately convex, black, with rufo-piceous legs, densely clothed above with broad linear ochreous-yellow scales, uniform in color and distribu- tion, not quite so close on the pronotum, densely clothed beneath with more oval whitish scales; beak in the female half as long as the body, stout basally, thinner apically, arcuate, a little more so basally; antenne inserted at the middle, the second funicular joint long, as long as the next two; prothorax short, two-fifths wider than long, the sides strongly arcuate, becoming gradually subparallel basally, the apex tubulate and about half as wide as the base; punctures dense and rather coarse, the smooth median line very narrow and central only; elytra narrowly parabolic, scarcely more than a third longer than wide, but slightly wider than the prothorax and three-fourths longer; strie coarse and deep; intervals from two and one-half to three times as wide as the strie, densely and confusedly, rather coarsely punctate. Length (2) 3.4- 3.6 mm.; width 1.65-1.7 mm. Missouri,—Schuster. Two examples. Not closely allied to any other species described, and represented so far only by the female. Centrinaspis proxima n. sp.—Elongate-suboval, moderately convex, black throughout, densely clothed above with uniform and broadly linear, decumbent and dark yellowish-gray scales, a little narrower and less dense on the pronotum but very uniform, dense, more oval and whitish and with feeble metallic lustre on the under surface and femora; beak in the male arcuate, moderately thick, very feebly and gradually tapering, somewhat more than half as long as the body, the antenne inserted only a little beyond the middle, the first funicular joint not quite as long as the next three, the second almost as long as the succeeding two, the club narrowly oval as usual; prothorax scarcely a fourth wider than long, the sides feebly converging and nearly straight, broadly rounding and oblique in about apical two-fifths, the apex scarcely constricted, almost half as wide as the base; punctures very dense, the median BARINE 393 smooth line indistinct and partial; elytra two-fifths longer than wide, at the swollen humeri evidently wider than the prothorax, three-fourths longer; stri# not coarse; intervals broad, densely and confusedly punc- tate; male with a very short erect conical process before each anterior coxa. Length (o’) 3.8 mm.; width 1.75 mm. Kansas (Fort Scott). One example. Comparable only with perscilla, but larger, more elongate and with a larger, basally more arcuate beak and basally less parallel prothorax; the dense and uniform vestiture of perscilla is whiter and less yellowish. The species perscilla Gyll., is now represented in my collection by six specimens from southern Illinois, Missouri, Kansas and Minnesota; the following resembles it rather closely but is more rhomboidal in outline, and has the scales of the upper surface shorter and somewhat less dense: Centrinaspis equalis n. sp—Rhomboid-oval, moderately convex, deep black throughout, including the legs and antenne; vestiture faintly yellowish-white, linear and not very dense above, the scales more oval and larger beneath, very dense but separated on the metasternum and mes-epimera; beak in the female evenly arcuate, distinctly longer than the head and prothorax, slender, gradually slightly thickened behind the antenne, which are inserted at or barely beyond the middle, slender, the club narrowly oval; prothorax two-fifths wider than long, the sides evenly arcuate from base to the very feeble apical constriction, subparallel basally; apex half as wide as the base; punctures moderate, dense, the median line not smooth but faintly tumid; basal lobe short, broadly rounded, a fourth the total width; elytra with distinctly oblique and broadly arcuate sides and moderately obtuse rounded apex, at the very moderate humeral prominences slightly though evidently wider than the prothorax, about twice as long; striz narrow, the intervals broad, sub- equal, at least four times as wide as the striz, with the squamules disposed in about three lines on each. Length (2) 3.75 mm.; width 1.65 mm. Colorado (Greeley),—Wickham. One example. Differs from perscilla, besides as above mentioned, in the re- latively longer prothorax and shorter elytra, the former with more evenly arcuate sides and the latter with more oblique and less rounded sides; the less dense scales of the parts of the under surface mentioned in the description is a feature not at all traceable in perscilla or proxima, the latter also having denser vestiture above and a much larger prothorax, with the sides more rapidly rounding anteriorly. Centrinus finitimus Csy., described as from Dallas, Texas, differs 394 MEMOIRS ON THE COLEOPTERA from perscilla in its smaller size, more. abbreviated form and more rapidly acuminate elytra; the scales of the upper surface are broadly linear and brownish-white and dense, though similarly not con- cealing the strie. The following is a species even smaller than jinitima and notably narrower, though agreeing very well in many respects: Centrinaspis profecta n. sp.—More evenly and less broadly oval than finitima, black, with more or less rufescent legs; scales of the upper surface rather broadly linear, pale yellowish and close-set, larger, whiter and dense on the under surface; beak arcuate, nearly half as long as the body, distinctly thicker basally and thinner apically in the female, but only little longer; antenne inserted somewhat behind (@Q ) to distinctly beyond (co) the middle; prothorax two-fifths to nearly one-half wider than long, the sides broadly arcuate, more so anteriorly, becoming gradually subparallel basally,the apex feebly subtubulate, slightly less than half as wide as the base; punctures moderate and dense; scutellum small; elytra parabolic, narrow at tip, a third longer than wide, only very slightly wider than the prothorax and two-thirds longer; strie moderately coarse, deep, the intervals alternating but slightly in width, between two and three times as wide as the strie; prosternum with feeble apical constriction, separating the coxe by nearly their own width, the spines of the male short and erect; second funicular joint of the antenne slender, shorter and thinner than the first but as long as the next two. Length 2.65-3.4 mm.; width 1.15-1.45 mm. Alabama (Mobile) and Texas (Columbus). Many specimens. Differs from finitima in its narrower and less rhomboidal outline, the prothorax being more nearly equal in width to the elytra, and in its slightly shorter beak; it varies considerably in size of the body. Centrinaspis nacta n. sp.—Rather stout, subparallel, attenuate behind, black, the legs and antennz rufescent; upper surface clothed loosely with narrow ashy scales, not concealing the integument and forming two irregular lines on each strial interval, the under surface with larger whitish scales, which are narrowly separated; beak in the male evenly arcuate and very feebly tapering throughout, slightly more than half as long as the body, the antennz inserted slightly beyond the middle, the second funicular joint long and slender but shorter and much narrower than the first, the third slightly elongate, the club narrowly oval, with its first joint constituting about two-fifths of the mass; prothorax large, fully two-fifths wider than long, the sides subevenly rounded but be- coming parallel gradually toward base, the apex briefly and feebly constricted and much less than half as wide as the base; punctures rather coarse, close and partially confluent, the smooth line irregularly traceable centrally; elytra two-fifths longer than wide, arcuately acum- inate and with narrowly obtuse apex, subequal in width to the prothorax and four-fifths longer; striae moderate, deep; intervals between two and BARINZ 395 three times as wide as the strie and loosely, coarsely punctato-rugose, shining; male with the prosternum deeply excavated centrally, the coxe well separated, the spines erect and rather short. Length (07) 3.5 mm.; width 1.55 mm. Texas (Houston),—Wickham. This rather distinct species differs from both profecta and finitima in the deep central excavation of the prosternum in the male, in the sparser whiter vestiture of more slender scales, forming only two lines on each strial interspace, and in the somewhat longer beak. Centrinaspis debilis n. sp—Smaller and narrower than profecia, nar- rowly subrhomboid-oval, piceo-rufous in color, the legs brighter rufous; upper surface clothed with linear yellowish scales, conspicuous but everywhere slightly separated; under surface with broader, oval, denser scales; beak in the male evenly arcuate, nearly half as long as the body, rather slender, punctured and squamulose, the antenne inserted near four-sevenths; prothorax nearly a third wider than long, the sides feebly converging and slightly arcuate, gradually more so before about the middle, the apex scarcely constricted; punctures dense, in great part longitudinally confluent, the smooth median line traceable in part; elytra a third to nearly half longer than wide, gradually obtusely acum- inate, with arcuate sides and feeble humeral swellings, very slightly wider than the prothorax and three-fifths to three-fourths longer; grooves moderate; intervals rather more than twice as wide as the grooves, not very densely rugulose, the scales disposed in two lines on each; scales of the abdomen distinctly and evenly separated. Length (07) 2.25- 2.7 mm.; width 0.8-1.15 mm. Alabama (Mobile). Two specimens. Differs from profecta in its narrower outline, paler coloration, narrower prothorax, the punctures of which are more longitudinally confluent, and in the bilineate and not broadly confused scales of the strial intervals. Centrinaspis tenuicula n. sp —Body narrowly subrhomboid, attenuate behind from the slightly swollen humeri, black, not at all shining, the legs and antenne slightly rufescent; upper surface clothed with decum- bent lineiform ochreous scales, evenly distributed over the pronotum and comparatively narrow interstrial surfaces, more oval, dense and whitish on the under surface; beak in the male moderately arcuate, gradually tapering, half as long as the body and squamose basally; antenne inserted just beyond the middle, nearly as in nacta; prothorax smaller, between a third and fourth wider than long, the sides just visibly con- verging and very feebly arcuate, gradually rounding before the middle, the obsoletely constricted apex about half as wide as the base; punctures moderately coarse, dense, the smooth median line not visible; elytra more than two-fifths longer than wide, with the long converging sides only very feebly arcuate and the apex rather narrowly rounded, distinctly wider than the prothorax and fully three-fourths longer; strie deep, somewhat coarse, the intervals about twice as wide as the strie; male 396 MEMOIRS ON THE COLEOPTERA with the prosternum indented anteriorly and clothed with scales which radiate from the central point, the coxe separated by three-fifths of their width, the erect spines rather slender but very short. Length () 2.9 mm.; width 1.15 mm. Missouri (locality unrecorded). One example. A distinct and rather isolated species coming near profecta, but narrower and with longer, gradually more sharply attenuate elytra and smaller and narrower prothorax, coarser elytral strie and narrower interstrial surfaces; the beak and antennez are nearly similar, differing from those of the next species. Centrinaspis repens n. sp.—Rather short and broadly subovyal, shining, black, the legs, beak and antenne rufous; upper surface with sparse slender white scales, condensed and broader near outer fourth of the thoracic base and also on the first three or four elytral intervals for a short distance near apical third, the under surface with similar dense lineiform scales on the propleura and larger, more oval, unevenly con- densed scales over the hind body, the scales all white as on the upper surface; beak in the female scarcely longer than the head and prothorax, slender and nearly straight, rapidly arcuate and broader at base, the antenne inserted slightly behind the middle, long, the first funicular joint about as long as the next four, the second much more slender, elongate, the club small, briefly oval, the first joint nearly half the mass; prothorax almost one-half wider than long, the sides subevenly arcuate, becoming gradually parallel basally, the feebly constricted apex half as wide as the base; punctures rather coarse, evidently though not at all widely separated, the smooth median line distinct and entire; scutellum transverse, very small and rugulose; elytra but little longer than wide, rapidly parabolic, slightly wider than the prothorax and three-fifths longer, the apices narrowly but separately rounded; striz rather coarse, very deep; intervals about twice as wide as the striz, loosely but rather coarsely, feebly punctato-rugose and shining, the squamules in about two lines on each; prosternum evenly convex, the coxe separated by one-half. their width. Length (2) 3.4 mm.; width 1.7 mm. Florida (Gulfport). There is no other species with which this can be closely compared. The shining upper surface, with rather sparse white vestiture, long basal funicular joint and small oval antennal club, with the rather broadly suboval outline of the body, are the most striking external features. Centrinaspis regressa n. sp—Rhomboidal, moderately convex, black, the legs and antennz rufo-piceous; upper surface with variegated vesti- ture of broad whitish scales at the sides of the pronotum and slender sparser brown scales, with a few paler intermingled, over the rest of the pronotal surface, broad, dark brown and very dense throughout the BARINE 397 elytra, excepting a dense whitish streak behind the scutellum and some sparse isolated pale scales elsewhere; on the under surface throughout rather small, more oval, luteous and close though perceptibly separated; beak in the female thick, evenly and moderately arcuate, cylindric and scarcely as long as the head and prothorax, the antennz inserted at the middle, the basal funicular joint long but notably thick, the club rather elongate-oval; prothorax three-sevenths wider than long, the sides con- verging, evenly and moderately arcuate throughout, the apex uncon- stricted and fully half as wide as the base; punctures rather coarse and close-set; elytra at the swollen humeri markedly wider than the pro- thorax, not quite twice as long, only a fifth longer than wide, rapidly parabolic, with narrow apex; strie deep and abrupt, clearly defined, the intervals uniformly and densely clothed and between three and four times as wide as the striw; anterior coxe separated by a little less than half their width. Length (Q) 2.7 mm.; width 1.25 mm. Mississippi (Warcloud). One example. This species is allied to perscita Hbst., but not very closely; it is stouter, the outline more evenly rhomboidal; the prothorax is relatively smaller and evenly and arcuately narrowed from base to apex and not more rapidly narrowed apically as in that species; the elytra are broader, the integuments blacker, the condensation of pale scales at the sides of the pronotum broader, the small con- densation of paler scales at the base of the third interval—distinct in perscita—altogether wanting, and the pale scattered scales, which are scarcely observable in that species, are very conspicuous. The beak is still shorter. My representatives of perscita are from New Jersey and Indiana. Centrinaspis connivens n. sp.—Rather broadly, obtusely oval, obscure rufous, clothed above densely with broad whitish scales, replaced by narrower and less dense, pale fulvous squamules in median three-fifths of the pronotum and on the elytra, except behind the scutellum, at the humeri, at base of the third interval, at a point on the fourth interval at _ the middle and to some extent broadly toward the sides; under surface with well separated whitish scales, denser at the posterior end of the met-episterna and closer and more linear on the propleura; beak in the male short, thick, cylindric and evenly arcuate, as long as the head and prothorax, the antenne short, inserted at the middle, the club oval, as long as the preceding six joints; prothorax large, three-fifths wider than long, with converging and evenly arcuate sides from base to apex; punctures close-set; scutellum rather large, flat, squamulose and trape- zoidal; elytra broadly parabolic, barely longer than wide, slightly wider than the prothorax and about twice as long; strie deep, not concealed; intervals varying from more than two to over three times as wide as the strie; prosternum (o') with two short erect spines and a deep rounded pit between them, the coxe separated by slightly less than their own 398 MEMOIRS ON THE COLEOPTERA width. Length (co) 2.5-2.7 mm.; width 1.25-1.3 mm. Nebraska (Lincoln). Two specimens. Distinguishable at once from any of the other species allied to berscita, by the larger, flatter and more trapezoidal scutellum; exulans, from New Mexico, is decidedly larger, with less abbreviated prothorax and different arrangement of the elytral vestiture near the scutellum. Of the picuwmnus section, besides that species and albotecta, I am obliged to recognize below five additional species as follows: Centrinaspis floridensis n. sp.—Evenly oval, convex, blackish, with rufescent legs, beak and antennz, clothed densely throughout with decumbent whitish scales, linear in form, moderately wide and uniform on the upper surface, merely a little broader beneath; beak in the female evenly arcuate, rather slender, gradually feebly tapering and as long as the elytra, the antenne slender, inserted at three-sevenths, the first funicular joint as long as the next four and much thicker, the second slightly longer than the third; club rather small, oval, as long as the preceding four joints; prothorax two-fifths wider than long, the sides rather strongly converging and evenly arcuate from base to the very feeble apical sinuation; apex much less than half as wide as the base; punctures close, moderately large; scutellum small, densely squamose; elytra only very slightly longer than wide, rapidly parabolic, with some- what swollen humeri, slightly wider than the prothorax and three-fifths longer; striz moderately coarse, deep; intervals from two and one-half to three times as wide as the strie, confusedly and closely punctato- rugulose, the sculpture concealed however. Length (Q) 2.7 mm.; width 1.28-1.3 mm. Florida (locality unrecorded). Two specimens. Separable easily from picumnus by its larger size, more broadly oval, rather more convex form, white—not yellowish—and dis- tinctly wider scales, longer beak and somewhat longer and stouter legs. From albotecta it differs in its distinctly larger size, stouter form and much longer beak in the female; albotecta is abundant in Florida, and I also have a specimen from Covington, Louisiana, which is almost typical, being merely somewhat narrower in outline. The following, however, though closely allied to albotecta, I believe to be different: Centrinaspis lasciva n. sp.—Similar to albotecta, except that the body is still smaller and narrower, the scales somewhat more obscure whitish in tint and more slender, the beak in the female decidedly shorter and less arcuate, being only half as long as the body, the prothorax smaller and relatively shorter, nearly one-half wider than long and distinctly less than one-half as long as the elytra, the legs shorter and more slender. Length (9) 1.9 mm.; width 0.8 mm. Texas (Alpine,—4400 ft. elev.),— Wickham. ee BARINE 399 There is at hand but a single example, but the differential char- acters given above will easily enable one to identify the species. The species described by Herbst under the specific name picumnus is abundant, but is much more restricted in range than I formerly thought, the more than forty specimens in my collection being from Massachusetts (Sherborn) and North Carolina, westward to Ne- braska and Kansas and southward to Mississippi and Louisiana; it does not seem to occur in either Florida or Texas, and the Arizona examples at hand form still another species as follows: Centrinaspis paulula n. sp.—Rather narrower and less evenly oval than in picumnus, the prothorax relatively narrower, almost similarly clothed, the scales a little broader and almost pure white; beak, antenne and sexual characters almost similar; prothorax slightly over a fourth wider than long, similar in outline, except that the apex is more distinctly tubulate; elytra almost similar in outline and sculpture, but with more prominent humeri. Length (co Q) 2.4-2.65 mm.; width 0.95-1.15 mm. Arizona (locality unrecorded). Six examples. In picumnus the elytra are only very slightly wider than the prothorax and approximately twice as long, while in paulula they are fully a fourth wider than the prothorax and evidently less than twice as long, besides having white and not more or less fulvous vestiture. From compacta it differs in its narrower and less ab- breviated outline. All of these species are closely allied in type of structure and vestiture, but differ in form and proportion of the parts, coloration and other features and undoubtedly have different food-plants. Centrinaspis compacta n. sp—Form and vestiture somewhat as in picumnus but more abbreviated and with the dense lineiform scales above silvery white; beak in the female similar but relatively somewhat longer, being very nearly as long as the elytra; prothorax relatively longer and not so transverse, being only a fourth wider than long, the sides similarly converging and evenly, though a little more strongly, arcuate, the apex more tubulately prolonged; elytra shorter, though of almost similar outline, the very dense confused vestiture leaving the deep strie sharply defined, evidently wider than the prothorax in similar manner, but only two-thirds longer and not about twice as long as they are in picumnus; legs similarly obscure rufous. Length (oc 2) 2.5-2.6 mm.; width 1.15- 1.2mm. Texas (Columbus). Two examples. The description is taken from the female type and is compared with the same sex of picumnus; the male is slightly more narrowly oval, but the prothorax is similarly larger and more apically tubulate _and the elytra relatively shorter than in the male of picumnus. 400 MEMOIRS ON THE COLEOPTERA Centrinaspis perpusilla n. sp—Narrowly suboval, strongly convex, black, the legs and antenne more or less piceous; vestiture white through- out, dense, linear and decumbent above, the scales broader than in any other of the forms near picumnus, concealing the sculpture, more oval and still denser beneath though similarly white; beak in the female evenly and strongly arcuate, slender, nearly smooth and slightly less than half as long as the body; prothorax only a fourth or fifth wider than long, the moderately converging sides broadly, subevenly arcuate to the pronounced apical tubulation, which is distinctly more than half as wide as the base, the basal lobe abrupt, prominent and rounded as usual; punctures dense, without smooth median line; elytra fully a third longer than wide, distinctly wider than the prothorax at the rather prominent humeri and four-fifths longer;. striae moderate but deep, the intervals with moderate ruguliform punctuation. Length (Q) 1.8 mm.; width 0.7 mm. Texas (Columbus). This species seems to be one of the more isolated of the picumnus section in its minute size, narrow outline, broad and white though subparallel scales of the upper surface and rather short, smooth and strongly arcuate beak, with the antenne inserted at two-fifths; the beak is more slender distally, a little shorter and much more arcuate than in the female of picumnus. It is highly probable that the Central American material assigned by Mr. Champion to picumnus, pertains to one or more allied but distinct species. *Centrinaspis segregans n. sp.—Oval, convex, shining, black, clothed sparsely above with long slender yellowish squamules, the legs, beak and antenne piceous; beak in the female half as long as the body, smooth, slender and nearly straight, rapidly arcuate, thickened and punctate at base; antenne inserted at the middle, the basal funicular joint longer than the club; prothorax large, a fourth wider than long, the converging sides evenly arcuate to the rather long subtubular apex, which is less than half as wide as the base; punctures moderately coarse, not very deep and separated by their own diameters or more, with an entire smooth median line, the scales broader and close in basal spots at lateral fourth; elytra evenly, rapidly parabolic, a fourth longer than wide, at the somewhat swollen humeri slightly wider than the prothorax, three- fifths longer; striz rather coarse, deep; intervals between two and three times as wide as the strie, not coarsely, rather sparsely and subrugulosely punctate, the slender squamules forming about two lines on each, coarser and closer near the scutellum, very gradually closer on intervals two to four from three-sevenths to four-fifths, nowhere mingled with darker squamules; under surface with linear scales on the propleura, shorter, more oval and separated elsewhere, but coarser and denser at the sides of the hind body. Length (2) 4.0 mm.; width 1.85 mm. Mexico (Temax, in northern Yucatan),—Champion. BARIN® 401 This species is allied to submaculata Chmp., from the same region, though probably having a different food-plant; it differs in its larger size, larger prothorax and in the elytral vestiture, which in that species is more or less mingled with dark hair-like squamules, the larger whitish condensed scales forming sharply limited areas about the scutellum and in a large, transversely subquadrate sutural region just behind the middle. The prosternal spines of the male in submaculata are very peculiar, being short, slender, erect, perfectly straight and cylindric. *Centrinaspis plagiatella n. sp——Oval, convex, rather shining, black, the legs, beak and antenne more or less rufous; upper surface clothed with elongate yellowish squamules, well separated and even on the pro- notum, confused but not dense on the strial intervals, broader and condensed in short lines on intervals three and five near an oblong, sharply defined, chocolate-brown sutural spot from just before the middle to apical fifth, shorter and more or less dense on the under surface; beak in the female rather thick, feebly tapering, strongly, subevenly arcuate and a little longer than the head and prothorax; antennz inserted barely behind the middle, the club narrowly oval and with its first joint two-fifths of the mass, as long as the preceding four joints, the first funicular joint as long as the next three; prothorax short, one-half wider than long, the sides converging, subevenly and rather strongly arcuate to the distinctly tubulate apex, which is half as wide as the base; punc- tures rather coarse, slightly separated, the median punctureless line entire but not very shining; scutellum subquadrate, broadly emarginate behind; elytra barely a sixth longer than wide, evenly parabolic, rather evidently wider than the prothorax and not quite twice as long, the humeri oblique to the base though scarcely at all tumid; striz deep but not very coarse, the confusedly and loosely punctato-rugose intervals nearly three times as wide as the strie. Length (9) 2.4 mm.; width 1.25 mm. Mexico (near Orizaba). Allied to lentiginosa Boh., represented in my collection by speci- mens taken in Tabasco, but it differs in its less conical and more transverse prothorax, with much more arcuate sides and more distinct tubulation of the apex, in the broader, more obtusely parabolic elytra, with the post-median sutural brown spot much more sharply defined, and in its smaller antennal club. *Centrinaspis delumbis n. sp—Subrhomboid-oval, black, with piceo- rufous legs and beak, the upper surface clothed with linear squamules, pale yellowish in color, replaced by smaller dark squamules on the Pronotum at each side of the median pale streak, and, on the‘elytra, forming two or sometimes three lines on each strial interval, becoming dark brown in a feebly defined narrow sutural area behind the middle T. L. Casey, Mem. Col. IX, Feb. 1920. 402 MEMOIRS ON THE COLEOPTERA and in two more external posterior spots on each elytron; under surface with very dense white scales throughout; beak subsimilar in the sexes, subcylindric, strongly, evenly arcuate, dull in lustre and squamulose basally, a little longer than the head and prothorax, the antennz inserted at (2) or distinctly beyond (o’) the middle; prothorax feebly conical, one-half wider than long, the sides evenly and moderately arcuate from base to the feebly constricted apex, which is not quite half as wide as the base; scutellum very small, squamulose; elytra parabolic, with strongly arcuate sides and rather narrowly rounded apex, at the feebly tumid humeri distinctly wider than the prothorax and about twice as long; striz moderate; intervals rather finely, loosely punctate, between two and three times as wide as the strie; male with the abdomen broadly, feebly impressed and more finely, sparsely squamulose medio-basally, the prosternal spines slender, finely pointed and slightly bent forward. Length ( 2) 2.4 mm.; width 1.18-1.2 mm. Costa Rica (San José). Two specimens. Allied rather closely to a species said to be Jentiginosa Boh., by Mr. Champion, and taken at Teapa, in Tabasco, Mexico; it is, however, decidedly less stout than that species, rather smaller in size and with shorter, more slender and still more arcuate beak. Of Gereus basinotatus Chmp., I have two examples agreeing in every particular with the description, taken by Townsend in the Sierra Madre Mts., of Chuhuahua—a long distance from its typical locality in Guerrero. It is a very isolated seminude species, with extremely coarse pronotal punctures and a triangular spot of dense white scales at each side of the scutellum. The following evidently belongs in the vicinity of basinotata and pugnax: *Centrinaspis cubensis n. sp.—Subrhomboid-oval, strongly convex, black throughout and somewhat shining; elongate squamules of the upper surface scattered, whitish and few in number toward the sides of the pronotum, the latter otherwise glabrous, on the elytra sparse, brown and decumbent in about two lines on each interval and inconspicuous, with a spot of white scales on the median line of each near the apex; there are also a few widely scattered white scales; under surface with rather dense long white scales; beak in the female long, very slender and smooth, thickening a little and punctate basally, as long as the elytra, the antennz slender, inserted rather behind basal third, the first two funicular joints much elongated, the seventh a little thicker and with fine pubescence, nearly like that of the narrowly oval club; prothorax a third wider than long, the sides converging and very moderately arcuate to the apical constriction, the tubulate apex half as wide as the base; punctures coarse and rather dense, the median smooth line evident but not entire; scutellum quadrate, tricuspid behind, roughly and densely punctate and nude in the type, the basal thoracic lobe deeply emarginate; BARINE 403 elytra acutely parabolic, at the swollen humeri distinctly wider than the prothorax, three-fourths longer, the apex narrowly rounded; grooves moderate but deep; intervals flat, with moderate, confused and well spaced punctures; claws slender and well separated at base. Length (2) 3.3 mm.; width 1.7mm. Cuba (Guantanamo). Recognizable easily by the long slender beak, deep emargination of the basal thoracic lobe and sparse vestiture above; the surface is less coarsely sculptured than in either basinotata or pugnax. The following group comprising Centrinus penicellus Hbst., capillatus and falsus Lec., and hospes, globifer, nubeculus and clientulus Csy., as well as the Mexican tonsilis Boh., and scutatus, _gaumerit and bicruciatus Chmp., resembles the preceding very closely, though the body is usually more rhomboidal and the male never has any trace of spines before the anterior coxee; this diversity or inconstancy of the species occurs in other genera, as will be noted under Centrinopus, which is as unequivocally defined by the man- dibles as is the present genus. The species which I described under the name Centrinus acumi- natus, proves to be merely the male of hospes, but I am now of the opinion that nubeculus is different from capillatus, with which it was united some years ago. The female of the latter is much narrower than that of mubeculus, with feebler pronotal punctures and with complete absence of the sutural condensation of broader scales just behind the middle of the elytra characterizing nubeculus. In the case of falsus Lec., its characters must be admitted to be somewhat aberrant, the beak being relatively shorter and much thicker than usual, the elytra less acuminate and the base of the prothorax without the usual small median lobe, but it may be included in Centrinaspis for the present. The following two species are allied to penicella: *Centrinaspis tomentosa n. sp. (Klug, i. litt.) —Rhomboidal, shorter and relatively stouter than penicella, blacker, the legs and antenne black or nearly so; vestiture white in color throughout, shorter and more even above and not concealing the integuments, having on the elytra similar but more developed black quasi-denuded areas, the scales of the under surface more oval and denser, less elongate than in penicella; beak (o’) distinctly shorter, but little over half as long as the body, with the antenne inserted at about the middle, or (2) a little longer though scarcely at all thinner and very nearly as long as the elytra, with the antennz inserted barely visibly behind the middle; prothorax nearly as in penicella but still shorter, a third or more wider than long; scutellum 404 MEMOIRS ON THE COLEOPTERA similarly closely squamose; elytra only a third longer than wide, in shape and relationship with the prothorax nearly as in penicella, the strie a little coarser; abdomen (co) with the very feebly impressed medio-basal part more finely and sparsely squamulose. Length (o' Q) 3.2-3.65 mm.; width 1.6-1.85 mm. Cuba,—Baker. Four examples. Not very closely comparable with penicella, although regarded as a variety of that species by Gyllenhal. Not only is the vestiture notably shorter and less shaggy, but it is almost pure white in color, more squamiform beneath, and the beak in both sexes is shorter, with the antennal insertion more nearly similar in the sexes and much less basal in the female. The denuded spaces on the elytra are much larger and more conspicuous. *Centrinaspis nimbata n. sp—Smaller and much narrower~ than penicella, black, the legs and antenne black; surface above and beneath with uniform slender yellowish squamules, loose and somewhat shaggy on the elytra, without denuded spotsin the type, denser and less yellow beneath but still long and linear; beak in the male feebly arcuate, some- what thicker basally, only a little more than half as long as the body, with the antenne inserted at the middle; prothorax a fourth wider than long, the sides subparallel and nearly straight in basal, rounding in apical, half; punctures coarse and dense, the scutellum somewhat transverse, evenly squamose throughout; elytra fully a third longer than wide, subacutely parabolic, at the tumid humeri distinctly wider than the prothorax, two-thirds longer; striae moderate, almost concealed by the shaggy vestiture; abdomen apparently not distinctly modified at base. Length (co?) 3.0 mm.; width 1.25 mm. Mexico (Cuernayaca),—Wick- ham. One example. Much smaller and narrower than penicella, with basally more parallel prothorax, and probably never with so evident quasi- denuded areas on the elytra as in that species; the antennal club is somewhat smaller. The dimensions of my series of nine examples of the true pentcella are 3.2-4.2 by I.45-2.0 mm. *Centrinaspis parens n. sp.—Subrhomboid-oval, convex and slightly shining, black throughout, the antenne piceo-rufous; upper surface loosely clothed with white squamules, very fine and linear on the pro- notum, a little coarser and in two or three lines on the strial intervals, uniform throughout both parts; beak (2) evenly arcuate, very slender and smooth, abruptly very thick and densely sculptured in rather more than basal two-fifths, nearly as long as the elytra, or (o"), less arcuate and thicker, but about as long and still thickened somewhat basally, the antenne inserted at two-fifths (2) or at the middle (o’), rather long, the club elongate-oval, having its joints almost equal in length; pro- thorax a third wider than long, the converging sides evenly arcuate to the feeble apical constriction; apex not quite half as wide as the base; BARINE 405 punctures coarse and close but with polished interspaces, the median line not well defined; elytra subacutely parabolic, two-fifths (co) to a fourth (9) longer than wide, at the rather prominent humeri much wider than the prothorax and a little less than twice as long; strie rather coarse and deep; intervals twice as wide as the striz or a little more, rugosely punctate and somewhat dull; abdomen strongly convex, not modified in the male; entire under surface densely clothed with broader, suboval, white scales. Length (oc 2) 3.0-3.1 mm.; width 1.35 mm. Costa Rica (Escazu),—Biolley. Communicated by Mr. Champion. This is the Central American species doubtfully referred to hospes by Mr. Champion, but it differs in its smaller size, smaller and sparser white squamules of the upper surface, relatively shorter slender smooth part of the beak in the female, and in several other features; the male differs from the male of hospes—described as acuminatus by the writer—in its relatively much longer beak, as well as in the more general characters just mentioned. *Centrinaspis rejecta n. sp.—Elongate-rhomboid, rather more slender and with relatively smaller prothorax, similar in coloration but less shining, the vestiture nearly similar but longer and denser above, more closely resembling that of hospes; beak (2) shorter, three-fourths as long as the elytra, otherwise resembling that of parens and hospes, evenly arcuate, smooth and black, abruptly thick and rugose in basal two- fifths; antennal club oval, its basal joint more than a third of the mass; prothorax small, fully a third wider than long, the converging sides some- what strongly arcuate to the feebly prolonged apex, which is a little less than half as wide as the base; punctures strong and very dense; scutellum small, albido-squamose; elytra three-sevenths longer than wide, elongate- ogival, with narrowly obtuse apex, at the somewhat prominent humeri a third wider than the prothorax, almost two and one-half times as long; strize deep, not coarse, the rugose intervals from much less to more than three times as wide as the strie; abdomen very convex; under surface and legs densely albido-squamose. Length (2) 3.4mm.; width 1.4 mm. Mexico (Puebla). Differs very much from the preceding in its narrower form, longer, closer vestiture above and longer elytra, and, from both parens and hospes, in its smaller prothorax, from the latter also in its smaller size and narrower outline. Centrinaspis optiva n. sp.—Oblong, subparallel, elongate and convex, clothed closely above with yellowish-white lineiform scales, rather broad on the pronotum, still broader and closer on the elytra, the scutellum very densely albido-squamose, the under surface with very dense white scales, those of the anterior and middle femora smaller, narrower and less dense than those of the posterior femora; beak (0) short, arcuate, ' thick and cylindric, rather smooth and only about as long as the pro- 406 MEMOIRS ON THE COLEOPTERA thorax, the antenne inserted at four-sevenths, the first funicular joint as long as the next three, the club oval, with its first joint less than half the mass; prothorax barely a fifth wider than long, the sides subparallel, broadly, feebly rounding from near the middle, the apex not constricted or evidently prolonged and half as wide as the base, the basal lobe well developed; punctures rather coarse, dense, somewhat confluent fongi- tudinally in part, the median line very narrow; elytra three-sevenths longer than wide, at the feebly tumid humeri only slightly wider than the prothorax, a little less than twice as long, the sides rather feebly con- verging and arcuate to the somewhat obtusely rounded apex; striz# very deep, moderately coarse; intervals alternating in width from three to four times as wide as the striw, very densely and confusedly sculptured and squamose; male with the abdomen very feebly impressed medially toward base and without modification of the dense vestiture. Length (@) 4.1 mm.; width 1.75 mm. Kansas (Medora),—Knaus. One example. This remarkably isolated species has some suggestive resemblance to falsa, having an almost similar though still shorter beak, but the prothorax is much more elongate and more coarsely, though less densely, punctate, and has the median lobe of the base—absent in falsa—very well developed; it also differs in the broader lineiform scales, and, in falsa, the strial intervals do not alternate in width in the same way. With the Mexican fonsilis type it has less affinity, the beak being more evenly cylindric and the body more parallel in outline. There is before me an interesting series of allied forms from vari- ous parts of Mexico and Central America; they have an elongate rhomboid-oval convex body, rather smooth and sparsely clothed above with more or less slender hair-like scales. In the subjoined table they are all described as new and can be regarded as species or subspecies according to the predilection of the cataloguer; they can be held as subspecies of the first name given, or as subspecies of tonsilis Boh., although, if the latter course is taken, I cannot harmonize any of them with certain statements made by Boheman in his description. For instance the pronotum is said to sparsely, at the sides more densely, albido-squamulose, and the elytra at base not at all wider than the thoracic base; these two statements are not even approximately borne out in any of the six forms here described, in all of which the loose lineato-squamulose thoracic vestiture is distributed with perfect uniformity and is not in the least different or denser toward the sides, and in all of them the BARINZ 407 elytra at the somewhat tumid humeri are notably wider than the thoracic base. Those at hand may be briefly defined as follows: Vestiture above and beneath pure white, the scales more oval and denser 1 EAD. cscs RRR RORERGR CRE LERC. TI. Ghd. Cnc) 0 CREP OR NISBET ER Oe en RE RRR rE rh? 2 Vestiture throughout ochreous or pale yellowish, constituted as in the PBR CNL sets sf Pan rate ie ears sf cisiccO ss waa es e'ed siepeteteres 4 2—Prothorax much shorter than wide. Form stouter than in any other here brought to notice, black throughout; beak (o’) not quite half as long as the body, arcuate, subcylindric, slightly more bent at point of attachment, the antenne inserted very slightly beyond the middle; prothorax nearly a third wider than long, the very evenly arcuato-convergent sides sinuate at the subtubulate apex, which is about half as wide as the base; punctures deep but very moderate in size and well separated, the smooth line entire, even and rather wide; scutellum nude, flaring, emarginate behind; elytra parabolic, three-sevenths longer than wide, four-fifths longer than the pro- thorax; strie rather coarse and deep; intervals finely, sparsely, confusedly punctate and two to three times as wide as the striae, the slender squamules in about two irregular series; abdomen un- modified basally. Length (0) 4.5 mm.; width 2.0 mm. Guate- midianG@vizabal—elevs TOO feet). i. a ck ees cee ean are scenica Prothorax as long as wide; body much narrower; lineate squamules of the upper surface thicker and closer, much more conspicuous.....3 3—Thoracic punctures rather coarse, deep and dense though scarcely in mutual contact, the smooth median line narrow and well defined, though not entire; basal lobe feeble; elytral striae moderately coarse, the intervals loosely punctulate and subrugose though shining; beak in the male much longer than the head and prothorax, thick, arcuate and squamulose, the antenne inserted beyond the middle; abdomen in that sex with a deep medio-basal impression clothed more sparsely with smaller scales. Length (o’) 4.0 mm.; width mospor | Mexico’ (Cuernavaca). >)..<¢..- 3.3.22) l eee ees compar Thoracic punctures not so coarse or close, rather more shallow, the general surface between the very even white squamules more polished, the median smooth line still narrower but subentire; basal lobe larger and more developed, abrupt and rounded; elytra slightly more elongate, the converging sides rather less arcuate, the striation and sculpture almost similar, the white squamules less elongate and somewhat more numerous; beak nearly similar; abdomen of the male with a medio-basal, less squamose impression, which is more elongate and not quite so well defined as in the preceding. Length (co) 4.2-4.6 mm.; width 1.68-1.78 mm. Mexico (Iguala, in Guer- rero)—Wickham. Three specimens..................0-- retracta 4—Prothorax narrower, barely visibly wider than long, the sides feebly converging and nearly straight to the middle, there broadly rounding and thence moderately oblique and barely at all arcuate to the unconstricted apex; basal lobe short, almost a third as wide as the base and broadly rounded; punctures moderately coarse, deep and 408 MEMOIRS ON THE COLEOPTERA separated by narrow shining interspaces, the smooth median line distinct and entire; elytra with the converging sides evenly and notably arcuate throughout, the apex more acutely ogival than in any of the preceding; sculpture nearly similar, the yellow squamules rather longer and broader; beak in the female evenly arcuate, moderately slender, gradually thicker basally, fully half as long as the body, with the antenne inserted very slightly behind the middle. Length (9) 4.6 mm.; width 1.8 mm. Mexico (State of Hidalgo). nugax Prothorax very distinctly wider than long, the basal lobe smaller, more abruptly formed and narrowly rounded at tip.................. 5 5—Sides of the prothorax converging and feebly arcuate, gradually more so anteriorly to the distinctly tubulate and prolonged apex, which is evidently less than half as wide as the base; punctures rather strong and close, the median line evident and entire; elytra nearly as in the preceding, but with the apex rather less sharply ogival, two-fifths longer than wide, the striation and sculpture nearly as in all the preceding forms; beak in the male thick, moderately arcuate, feebly tapering and but little longer than the head and prothorax, the antenne inserted evidently beyond the middle; ab- domen in that sex only very feebly impressed medio-basally, the impression clothed with scarcely different scales. Length (o%) 4.3-4.5 mm.; width 1.7-1.8 mm. Mexico (Temax, in northern Yucatan),—Gaumer. Sent by Mr. Champion. Three specimens. logica Sides of the prothorax more parallel basally, more rapidly and strongly rounded anteriorly to the less tubulate apex, which is half as wide as the base, the punctures moderate in size, rather shallow and well separated, the smooth median line sharply defined, even and entire; elytra as in the preceding; beak in the male less thick than in the preceding and slightly longer, almost half as long as the body, the antenne inserted very slightly beyond the middle, the scape as usual almost attaining the eye; abdomen in that sex barely per- ceptibly impressed medio-basally and with the vestiture scarcely differing. Length (o%) 4.5 mm.; width 1.9 mm. Mexico (Chil- pancingo, in Guerrero)—Hége. Communicated by Mr. Champion under, the mamevozsi7s Bohs... +4. 2. - «oe aie eee sparsella The male seems to be notably more abundant than the female throughout this group of closely allied though recognizably different forms. Stereogerzus n. gen. The type of this genus is Gereus tenebricosus Chmp., of Guerrero, Mexico, and it is separated from Centrinaspis and Gereus because of marked habital peculiarities, residing in its large size, very stout form, dense sculpture and tuberculate but not spiniform armature of the prosternum in the male. The following species will also enter - °° °~°~»°» BARIN 409 this genus in all probability, but is represented only by the female, so far as now known: *Stereogereus robustulus n. sp—Body somewhat as in Centrinaspis parens, but very much larger and stouter, convex, oval, with very prominent but rounded humeral prominences, deep black in color throughout the body, legs and antenne, very evenly clothed above with white and slender squamules, everywhere well separated among them- selves; under surface with more oval dense white scales, more slender and separated on the femora; beak in the female long, very slender and nude, evenly arcuate, becoming thick and sparsely squamulose basally, except along a polished median line, the antenne inserted behind the middle, the basal funicular joint elongate; prothorax a third wider than long, the sides evenly arcuate, becoming parallel at base, the apex distinctly subtubulate, prolonged and almost half as wide as the base, the lobe abrupt, rounded and distinct; punctures rather coarse, evenly very close-set, without distinct median line; scutellum nude, quadrate, emarginate behind; elytra barely a fifth longer than wide, broadly and obtusely parabolic, at the swollen humeri distinctly wider than the prothorax, very nearly twice as long; strie very moderate, the punctures bearing each a more slender suberect squamule; intervals broad, with moderate and confused, separated and rounded punctures; anterior coxe rather narrowly separated. Length (2) 4.6 mm.; width 2.4mm. Guatemala (Esquintla). A very distinct species, widely different from any known Centrin- aspis in its very stout form and more prominent humeri; it differs from tenebricosus Chmp., in its conspicuous uniform white vestiture and much less dense sculpture. Conocentrinus n. gen. In this proposed new genus the body is subrhomboidal in outline, with large and elongate subogival elytra and comparatively small but broad and conical prothorax. The scales above, and especially beneath, are dense and uniform, generally whitish in color. The type may be described from the female as follows: *Conocentrinus tenuirostris n. sp.—Deep black throughout the body, legs and antenne, the integuments rather smooth and finely sculptured; upper surface with small whitish scales, very abundant and uniform but distinctly separated among themselves, fine and transverse on the pro- notum and in about three irregular series on the strial intervals, larger, snow-white and extremely dense throughout the under surface; beak in the female very long and filiform, not at all thickened basally, although flatter and thinner distally, subevenly and strongly arcuate and almost twice as long as the head and prothorax; antennz long, inserted at about the middle, the first funicular joint very long, the second almost as long 410 MEMOIRS ON THE COLEOPTERA as the three following, the club elongate-ovoidal; prothorax one-half wider than long, rapidly conical and with feebly arcuate sides from base to apex, which is much less than half as wide as the base, the latter transverse, the lobe abrupt, small, rounded and somewhat more coarsely and closely squamose; punctures fine, not very dense but forming longi- tudinal ruguliform lines, the smooth median line not entire; scutellum nude; elytra with converging and broadly arcuate sides throughout, not quite one-half longer than wide, at the feebly tumid humeri much wider than the prothorax, two and one-half times as long, the humeri gradually rounding to the base; strie moderately coarse, deep, the intervals feebly punctulate and nearly three times as wide as the strie; anterior coxee separated by a third of their width. Length (Q) 3.7- 3.9 mm.; width 1.65-1.75 mm. Guatemala (near the city). Two examples. After searching the work of Mr. Champion carefully I am unable to find anything approaching this species and so conclude that it is undescribed. The two following, although apparently belonging to the same genus, differ considerably in the less elongate beak, which is notably thickened and sometimes more arcuate basally: *Conocentrinus incrustatus n. sp.—Rather stouter® rhomboidal, deep black throughout the body, legs and antenne; upper surface clothed very closely with uniform brownish-white scales, only a little less broad and transversely arranged on the pronotum and in about three close irregular series on the strial intervals; under surface with larger and extremely dense white scales; beak in the male a little longer than the head and prothorax, evenly arcuate throughout, gradually thickened basally, smooth, squamulose sparsely at the sides basally, the antenne inserted distinctly beyond the middle, and, in structure, nearly as in the preceding species; prothorax two-fifths wider than long, evenly conical, the very oblique sides barely at all arcuate, the apex feebly subtubulate and narrow, barely over two-fifths as wide as the base, the basal lobe gradually formed, distinct; punctures rather coarse, opaque and densely coalescent, with very narrow and slightly tumid median line; scutellum nude; elytra rapidly parabolic, rather narrow at tip, with somewhat tumid humeri, a little though evidently wider than the prothorax and distinctly more than twice as long, the strie rather deep, moderately coarse, not at all concealed; prosternum canaliculate throughout but with unbroken crust of scales, the coxe separated by less than half their width; abdomen unmodified in the type. Length (o’) 4.2 mm.; width 2.0mm. Guatemala (Capetillo). One example. For some time I regarded the type of this species as the female of Gereus spiniger Chmp., but the structure of the beak seems certainly to indicate the male, although there are no abdominal modifications and no prosternal spines or prominences. In the BARINZE 411 female of spiniger the antenne are said to be inserted behind the middle of the beak. *Conocentrinus canorus n. sp.—Smaller and narrower, deep black throughout, the upper surface clothed very closely with uniform ochreous scales, transverse and a little smaller and thinner on the pronotum and. confusedly arranged throughout the strial intervals; beak in the female one-half longer than the head and prothorax, slender and nude, broadly arcuate, becoming rapidly more arcuate and thickened at base, the antenne inserted at three-sevenths, the basal parts finely and sparsely squamulose; first funicular joint very long, the second much shorter, as long as the following two, the club normal; prothorax rapidly conical, with medially very feebly arcuate sides, the apex not obviously con- stricted and barely three-sevenths as wide as the base, the lobe of the latter small, gradually cuspidiform; punctures dense and subopaque; scutellum very small, nude; elytra elongate-ogival, narrow at tip, at the narrowly subprominent humeri distinctly wider than the prothorax, the surface somewhat undulated, the sides subparallel and feebly sinuate for a short distance behind the humeri; the subapical umbones are rather prominent; striz somewhat fine but deep; under surface with rather small but very close whitish scales; anterior coxe separated by a third of their width. Length (2) 3.6 mm.; width 1.65 mm. Guatemala (near the city). One example. I am unable to recall the source from which any one of the above four examples was received; they have been undetermined in my collection for many years. It is more than probable that Gereus tenuistriatus Chmp., also belongs to this genus. Leptocorynus n. gen. The type of this proposed genus is the Mexican Gereus aspersus Chmp. (Biol. Cent.-Amer., IV, 5, p. 290). It is distinguished primarily by the very elongate antennal club of the male, this being always longer than the entire funicle and sometimes nearly twice as long. Besides aspersus, the genus will comprise scutatus, longiclava and tenuiclava of Champion, assigned originally to Gereus. The rather numerous genera proposed in the foregoing pages at the expense of Gereus, in the enlarged scope given it by Mr. Cham- pion, are founded upon peculiarities of habitus, supplemented by more or less radical differences in the structural characters of the male. This method of defining genera is frequently convenient in large groups, which are deficient in strongly marked structural 412 MEMOIRS ON THE COLEOPTERA characters of a general nature, as among the Amarine and Pter- ostichinee of the Carabidz for example, and also in the large genus Reichenbachius of the Pselaphide. Odontocorynus Schon. This is another genus founded solely upon sexual peculiarities of the male, the antennal funicle in that sex frequently being enlarged and denticulate distally, and the club having a lateral basal tooth. As stated in my revision (p. 577), there are two well defined groups, which are also of a sexual nature, one, represented by seutellwm- album, having the beak nearly similar in form in the two sexes, and the other having a strongly sculptured and basally bent beak in the male, but cylindrical, in great part smooth and more evenly arcuate in the female. The scutellum and basal thoracic lobe are conspicuously albido-squamose in all the species of both groups. The species of the second group are in reality very numerous in our fauna, but the first, or scutellawm-album group, is rather more limited, though still extensive. Odontocorynus is in fact by far the largest Centrinid genus of our fauna, and it was largely because of the multiplicity of forms having, in some parts of the series, very puzzling superficial resemblances, that I passed over it without much discriminative study in my revision of the Barine. The delimitation of the species has cost a vast amount of time, given as occasion permitted during some years past, and I hope that the various taxonomic forms defined below as species may prove to be of permanent value; there is not the slightest doubt that this will prove to be the case with most of them at all events. The following table contains those species allied to scutellum-album: Strial intervals with generally confused sculpture and vestiture, some- times partially unilinearis.... 0.5.0... 20.052. 7 See 2 Strial intervals each with a single line of scales, narrowly confused toward base on some of the intervals; body small in size............... 14 2—Prothorax widest before the base, the sides curving inward basally. Stout, oval, strongly convex, shining, black, the elytra and legs faintly subpiceous, the beak and antenne black; beak in the female slender and finely, sparsely punctured throughout, feebly arcuate, abruptly more so at base, as long as the elytra, the antenne inserted at four-sevenths; prothorax transverse, three-fifths wider than long, the sides strongly converging and broadly, evenly arcuate from near basal fourth to the wholly unconstricted apex, the basal lobe BARINZ 413 feeble and with some coarse pale scales; punctures coarse, separated, confluent and rugulate laterally, the linear scales very small and inconspicuous; median smooth line partially evident; scutellum transverse, densely albido-squamose; elytra parabolic, a fifth longer than wide, at the rather prominent humeri much wider than the prothorax, twice as long; grooves very coarse, finely, remotely punctate and opaculate; intervals subequal, less than twice as wide as the grooves, shining, with coarse and close punctures which are generally narrowly confused, but forming single series in some places, the fine slender scales pale and evident, not at all close; under surface with the oval whitish scales, more or less separated and lying within coarse punctures. Length (9) 4.0 mm.; width 1.85 mm. Oklahoma (Atoka),—Wickham. One example. atokanus n. sp. Ber EmeWAC EST cits DASCasyererortiolets oeiste. di «.sia7s o's bi elaleldigeoe slain etleltee a) s/s 3 3—Sides of the prothorax feebly converging and subevenly arcuate, or Praduallys more arcuate apically: joi bo. Ys siccs su wisteilere a yet ene shee aw os 4 Sides moderately converging and evenly, just visibly arcuate to just behind the apex, where they are rapidly turned inward for some custanceito the apex) body small... 2... 6. sls. ue bie oe tieedeeieteese 13 4—Body, and especially the elytra, rufous in color................4- 5 Body black, sometimes uniformly blackish-brown................--- 6 5—Body not very stout, subrhomboid-oval, obscure rufous, the anterior parts generally darker; antenne inserted at four-sevenths (@), or rather beyond three-fifths (co), the tooth of the club obtuse, the last funicular joint but slightly transverse; prothoax short, one-half wider than long, subevenly rounded at the sides, the punctures coarse and close-set but not very dense, smaller medially, the median line partial and indefinite; elytra a fourth longer than wide, para- bolic and with obtuse apex, twice as long as the prothorax, the humeri somewhat prominent; grooves rather coarse, the intervals flat, sometimes distinctly alternating in width, the punctures moder- ate, confused or forming in great part single series, the scales yel- lowish; under surface with broad dense whitish scales as usual. Length (co Q) 3.5-4.2 mm.; width 1.4-2.0mm. Northern Illinois. (SYS SIDSCHOAVESTNSE Sie ea Oior CcaeNCc cRe ROCCE arc eho rufobrunneus n. sp. Body stout, nearly as in the preceding in coloration, the elytra relatively more elongate; beak in the female slightly longer than in the same sex of rufobrunneus, four-fifths as long as the elytra, the antennze nearly similar, except that the club is thicker and more oblong- oval; prothorax fully one-half wider than long, the sides more con- verging than in the preceding, arcuate, the punctures not quite so coarse and more widely separated—by fully half their diameters, the median line indistinct; small squamules denser toward the sides in a manner not elsewhere noticeable; elytra nearly a third longer than wide, somewhat over twice as long as the prothorax, the grooves still coarser, the intervals alternating, the narrower scarcely wider than the grooves; scales more breadly oval, pale yellow, close-set and confused; legs brighter rufous. Length (2) 4.4 mm.; width 2.2mm. Missouri (St. Louis),—Schuster........ lineatellus n. sp. MEMOIRS ON THE COLEOPTERA Body smaller and more narrowly rhomboid-oval, rather shining, bright rufous, the head and beak blackish; squamules above yellowish, minute, slender, sparse and very inconspicuous, the broad whiter scales beneath very narrowly separated; beak in the male a little longer than the head and prothorax, nearly straight, abruptly bent at base and vertically thicker at the middle than between this and the basal arcuation, this being the usual structure; antenne inserted at apical third, the tooth of the club prominent, obtuse, the last funicular joint transverse, pointed within; prothorax much less transverse than in the two preceding, a third wider than long, the sides converging and barely visibly arcuate, rounding at apex; punctures very moderate in size, rather dense throughout, the median smooth line indistinct; elytra with prominent humeri, the oblique sides only feebly arcuate, the apex obtuse, not quite a fourth longer than wide and not twice as long as the prothorax, the grooves coarse, deep, punctate; intervals one or two times as wide as the grooves, confusedly and coarsely punctate. Length (o’) 3.5 mm.; width T.6:mm;, JNew sVorkaye ser eelsn <2. okies ee semiruber n. sp. 6—Prothorax very short and transverse, three-fifths wider than long. Body and legs deep black. throughout, the squamules of the upper surface small, whitish and not conspicuous on the elytra, white, oval and dense beneath; beak in the female shining, coarsely, sparsely punctate, three-fourths as long as the elytra, abruptly bent at base, the antenne inserted near two-thirds, the club rather large, elongate-oval; prothorax with the converging sides broadly, sub- evenly arcuate; surface impressed slightly near the apex; punctures not very coarse, deep, close but not quite in contact, the median line narrow and irregular though subentire; elytra relatively longer than usual, with very prominent but obtuse humeri, moderately oblique sides and rather broadly obtuse apex, much more than twice as long as the prothorax; grooves rather coarse, deep, punctured; intervals subequal, nearly twice as wide as the grooves, the punctures moderately coarse and confused. Length (2) 3.8 mm.; width 1.9 mm. A single example received from a foreign dealer, with the locality ‘‘Columbia” and with a MS name by an undicipherable EM Ur aod doo hast e556 Tee Oo saa ce os advena n. sp. Prothorax much less transverse, the elytra relatively normal in length.. .7 7—Legs throughout somewhat obscure rufous. Body larger than in any other of this section, stout, subrhomboid-oval, scarcely shining, brownish-black; beak in the female straight or very nearly so, abruptly bent at base, barely at all shorter than the elytra, the antenne inserted at three-fifths, the club normal, oval; prothorax not quite one-half wider than long, the sides subevenly arcuate, becoming more parallel at base; punctures decidedly coarse, deep, close but not in actual contact, the smooth line distinct but not entire; elytra short, parabolic, with prominent humeri, evidently not twice as long as the prothorax; grooves coarse, deep and abrupt, the intervals subequal, twice as wide as the grooves to evidently less, coarsely and confusedly punctate, the squamules small and slender, sparse, pale but not at ail conspicuous. Length (Q) 4.2- BARIN@ 415 4.7 mm.; width 2.0-2.35 mm. Massachusetts (Cambridge) to Florida. . Five specimens... 2.0... 0e0000-- scutellum-album Say Legs, or at least the femora, always black, the tibiae sometimes faintly rufescent; body smaller in size, except in divisus............-.-. 8 : 8—Thoracic punctures loose, distinctly separated except at the sides, rather coarse but smaller along the middle. Body much smaller : than in the preceding and narrower, deep black, the legs black throughout; beak thicker, more strongly sculptured and more bent at base in the male; antenne inserted near four-sevenths (Q) or three-fourths (co), the male club excavated and obtusely dentate basally; prothorax unusually short, one-half wider than long, the sides converging and moderately, subevenly arcuate throughout; surface broadly and feebly impressed transversely near the apex; elytra parabolic, fully twice as long as the prothorax, with rather prominent humeri and coarse deep grooves; intervals only one-half wider than the grooves to somewhat more, very coarsely, closely punctate—often in single series, the squamules small and sparse but rather brilliant white and distinct. Length (oc 9) 3.5-3.8 mm.; width -1.65-1.85 mm. Rhode Island, Pennsylvania and North Carolina (Southern Pines). Six examples......... adjunctus n. sp. 9 g—White squamose crust of the scutellum divided along the middle; body larger. Oval, strongly convex, deep black throughout, the legs and antenne black, slightly shining, the squamules above minute and scarcely distinct on the pronotum, small, slender and sparse on the elytra but white and evident, the large white scales of the under surface generally separated but dense on the abdomen and met-episterna posteriorly; beak in the male nearly straight, bent at base, longer than the head and prothorax, deeply sulcate, squamu- lose, the lower margin at the middle strongly arcuate; antennz in- serted near three-fourths, the two outer joints of the funicle simple, symmetric, oval and one-half wider than long, the elongate-oval club with a strong erect and acutely triangular basal tooth; pro- thorax a third wider than long, the sides converging and evenly, rather strongly arcuate throughout, the punctures coarse, narrowly separated, with a short median smooth line; elytra rather short, with prominent humeri, only three-fourths longer than the prothorax; grooves very coarse; intervals one-half wider than the grooves and coarsely punctate, becoming very narrow suturally toward tip. Length (o’) 4.6 mm.; width 2.18 mm. Indiana. Levette collec- MSR w Ped Sy « saivs wicca « wi dhe Mais acne MINE Te Maha, avis slapd = « divisus n. sp. White squamose crust even as usual, not divided; body smaller... ..10 10—Tooth of the male antennal club large, broadly triangular.......11 Mootoesmall, slender and spintlorm... ctl ance. cedex secs soaiweecess- 12 1i—Form rhomboid, the pronotum somewhat shining, black or feebly picescent, the tibiz obscure rufous; beak in the male rather slender, feebly arcuate, more so at base, as long as the head and prothorax, punctate, the antenne inserted at apical fourth, the last funicular joint but slightly transverse, with a small abrupt internal tooth, 416 MEMOIRS ON THE COLEOPTERA the club large, elongate-oval; prothorax two-fifths wider than long, the converging and feebly arcuate sides more rounded apically; punctures coarse, subconfluent, becoming fine and sparse medio- apically, the smooth line obsolete; elytra very obtusely parabolic, fully twice as long as the prothorax, with only moderately prominent humeri, the grooves deep; intervals alternating from one-half wider than the grooves to twice as wide as the latter, the very coarse crowded punctures bearing each a small but whitish and very dis- tinct squamule. Length (o’) 4.2 mm.; width 1.9 mm. A single example received from a foreign dealer, labeled “N. Am—D. Wehneke?’’’.):):25,.) epee oe eos SS incertus n. sp. Form nearly similar but narrower, black throughout, rather shining; beak in the male punctate, rather shorter, barely as long as the head and prothorax, the antenne inserted near two-thirds, the last funicular joint slightly transverse, oblique within, the club large, elongate-oval; prothorax a third wider than long, the converging sides feebly, subevenly arcuate, only just visibly more so apically; punctures moderate in size, very close-set but scarcely in contact, with a partial smooth median line; elytra less obtusely parabolic, evidently less than twice as long as the prothorax, the grooves less coarse, very deep; intervals more equal, nearly twice as wide as the grooves, the punctures much less coarse and not so dense, bearing small and slender, white but much less conspicuous squamules. Length (o") 3.3 mm.; width 1.6 mm. New York (locality un- FKECOLAEM) ew 0.5. ARO eb Pe Ns Se Oe fultoni n. sp. 12—Body elongate-oval, convex, black throughout, slightly shining, the squamules of the upper surface whitish but very small, sparse and barely at all evident; beak in the male feebly arcuate, bent at base, longer than the head and prothorax, the antenne rather beyond two-thirds, the last funicular joint transversely cuneiform, shortest within, the club large, elongate-oval, the tooth slender, very promi- nent; prothorax fully a third wider than long, the sides very feebly converging and but slightly arcuate, rounding apically; punctures moderate, very dense and confluent basally and laterally, finer and separated medio-apically, the smooth line obsolete; elytra evenly parabolic, with moderately prominent humeri, about twice as long as the prothorax; grooves moderate, very abrupt and deep, punctate at bottom as usual; intervals about twice as wide as the grooves, the punctures moderately coarse, dense, sometimes in looser single series. Length (o’) 3.6 mm.; width 1.55 mm. Northern Illinois, =— Websters). cia ir taysteroe ove. os bs 4's Roane nc eee illini n. sp. Body rather stouter, oval, convex, scarcely shining, black, the tibiz rufescent; squamules of the upper surface small, slender and sparse, whitish and evident, though not at all conspicuous; beak in the male nearly straight, abruptly bent at base; antenne inserted beyond apical third, nearly as in the preceding in structure; prothorax larger, barely a third wider than long, the moderately converging sides distinctly and subevenly arcuate, only a little more so apically; punctures moderate, deep and very dense, somewhat looser medio- apically, the median line not smooth though feebly tumid basally; BARINE 417° elytra short, broadly parabolic, with moderate humeri, barely three- fourths longer than the prothorax; grooves deep; intervals less or more than twice as wide as the grooves, moderately coarsely, strongly and very densely punctate; under surface with dense white oval scales as usual. Length (co) 3.3-3.8 mm.; width 1.5-1.8 mm. Maciel (IMUILE OT) rene lta: bustoiie clever este tara:o «oy ayaelere subaffinis n. sp. 13—Oblong-suboval, rather narrow, black throughout, feebly shining; squamules of the upper surface very small, slender, sparse and indistinct, the white scales beneath narrowly separated; beak in the male only moderately stout, feebly arcuate, shorter than usual, barely as long as the head and prothorax, the antenne inserted beyond apical third, the outer funicular joints transverse and com- pact, the last two pointed within, the club elongate-oval, with a prominent and acutely triangular basal tooth; prothorax two-fifths wider than long, moderately coarsely and very densely punctate throughout; elytra evenly parabolic, with moderately prominent humeri, not quite twice as long as the prothorax, the grooves moder- ate, very deep; intervals from less than two to two and one-half times as wide as the grooves, the punctures smaller than usual, confused throughout but not very dense. Length (o7) 3.0 mm.; width 1.35 mm. New York (Long Island).....subabruptus n. sp. 14—Body narrowly oblong-suboval, slightly shining, black, the tibize obscure rufous; beak in the female rather slender, sparsely punctate, feebly arcuate, broadly and feebly constricted near basal third and nearly half as long as the body, the antenne slender, inserted at four-sevenths; prothorax short, four-sevenths wider than long, the sides feebly converging and very slightly arcuate, gradually broadly rounding before the middle; punctures very moderate and well separated, dense toward the sides, the imperfect smooth line narrow though traceable; elytra narrowly parabolic, two and a third times as long as the prothorax, with rather prominent humeri, the grooves coarse, deep, the intervals less than twice as wide as the grooves, with single series of moderately coarse punctures, which are more or less confused on the sixth, except behind the middle, the squam- ules white and linear but rather broad and conspicuous. Length (2) 2.7 mm.; width 1.2 mm. New York (locality unrecorded). RUD renee sect rn ty sonar) Sone sas egeushe dl s 'asotsickesayey eietobor eee amputatus n. sp. Body a little larger and stouter, oblong-suboval, somewhat shining, piceous-black; beak in the female almost as in the preceding but somewhat thicker and less constricted near basal third, the antenne almost similar; prothorax of different outline, trapezoidal, one- half wider than long, the converging sides very evenly and but slightly arcuate from base to apex; basal lobe larger and more prominent; punctures coarser, distinctly separated, dense laterally, the smooth median line barely traceable and only centrally; elytra similar but more broadly parabolic, only three-fourths longer than the prothorax, almost similarly grooved and punctate and with similar conspicuous squamules. Length (9) 3.2 mm.; width 1.4 ALLEN CW ELSE Yatate a's startle, ste shelolerbelstcla oo slat te unilineatus n. sp. T. L. Casey, Mem. Col. IX, Feb. 1920. "418 MEMOIRS ON THE COLEOPTERA There may be some doubt if all representatives of semiruber are as pale rufous in color as the type, but I have noted that throughout Odontocorynus, wherever species are represented by good series, there is no decided variation in color to be observed. The following table embraces all the species of the salebrosus type that have come to me so far: Elytra with more or less dense, pale and very conspicuous parallel-sided scales. Rocky Mountain regions, excepting inspectus and boonet, having nude strial punctures and which occur east of the Mississippi Elytra and pronotum with separated linear scales, which are so numerous however as to render the vestiture conspicuous; strial punctures each with a distinct slender white squamule...................- 8 Elytra and pronotum more remotely clothed with small, sparse, slender and inconspicuous squamules; strial punctures never squami- fETOUS). 2 <2) lets choise crete ieee es 8 soe sie gee oie eee 9 2—Strial punctures each with a conspicuous squamule; body very stout; first funicular joint notably elongate..................-. 3 Strial punctures each with a very minute, slender and barely discoverable squamule; body less stout; first funicular joint evidently shorter. .4 Strial punctures without apparent squamules; first funicular joint some- what diversified in length according to the species.............-- 7 3—Body stout, oblong-suboval, not shining, black, the legs and antenne black throughout; upper surface clothed densely with rather large white scales, intermingled with some that are darker on the elytra, the under surface, as usual, with dense oval white scales; beak in the female smooth, cylindric, only feebly tapering, nearly straight, bent at base, about half as long as the body, the antenne inserted barely visibly beyond the middle, the funicular joints with corone of white squamules; prothorax four-sevenths wider than long, the sides subevenly and strongly arcuate, becoming parallel basally, the apex faintly constricted; basal lobe a fourth the total width; punctures moderately coarse and very dense, with a smooth median line centrally; elytra broadly, obtusely parabolic, a fourth longer than wide, at the moderately prominent humeri but very slightly wider than the prothorax, four-fifths longer; striz not very coarse, the intervals broad, subequal, not very coarsely, confusedly punc- tate. Length (2) 5.0 mm.; width 2.35 mm. Eastern Colorado. coloradensis n. sp. Body less stout, black, less obtuse behind, clothed very densely through- out above with large yellowish-white scales, still larger, denser and whiter beneath, the squamules of the strial punctures very distinct, the interstitial scales of perfectly uniform tint; beak in the female smooth, feebly arcuate, slightly tapering, bent at base and not quite half as long as the body, the antenne nearly similar, the funicle slightly longer; prothorax of nearly similar outline, except that the arcuate sides become parallel only much nearer the base, the basal BARIN& 419 - lobe larger, almost a third the total width; punctures moderate, very dense, the smooth median line not evident; elytra with more converging arcuate sides and less obtuse rounded apex, at the rather more prominent humeri much wider than the prothorax, three- fourths longer; striz decidedly coarser, the closely and confusedly punctate intervals slightly more than twice as wide as the striz and subequal in width among themselves. Length (2) 4.7 mm.; width 2.2mm. Colorado (locality unrecorded)....... densissimus n. sp. 4—Sides of the prothorax regularly arcuate, gradually less so and sub- Pataledaneabout basal half. ies. We gue sce sc te ses ee ee 5 Sides subparallel and very feebly arcuate, rounding only in about apical ULETIRG |, o cue hahah MOC IGIEL ke pop CARH RS: EUSENG, Bera ROAR ae eae ae 6 5—Form oblong-suboval, stout, closely clothed above with white scales, smaller and more slender and less dense on the pronotum, except at apex and as usual on the basal lobe, larger, broad and dense on the strial intervals, dense and white on the under surface; beak in the female smooth, feebly tapering, slightly arcuate, subevenly more arcuate in about basal half, a little less than half as long as the body, the antenne inserted submedially, the first two funicular joints elongate, the first less so than in the two preceding but as long as the next two together; prothorax one-half wider than long; apex barely at all constricted, not quite half as wide as the base, the basal lobe a fourth the total width; punctures moderate, dense, though slightly separated medially, without smooth line; elytra very obtusely parabolic, at the moderate humeral prominences only just visibly wider than the prothorax, three-fourths longer; striz deep, the squamules inconspicuous; intervals confusedly punctate, three or four times as wide as the strie. Length (2) 4.5 mm.; width 2.1 mm. Dakota (locality unrecorded).....dakotanus n. sp. Form narrower, relatively somewhat more elongate, black, the tibiz rufescent; upper surface clothed densely with uniform ochreous scales, which are nearly as wide on the pronotum as on the strial intervals, but not quite so dense; beak in the female arcuate, smooth, feebly tapering, nearly as in the preceding but more abruptly bent at the immediate base, the antenne nearly similar and inserted just visibly beyond the middle; prothorax somewhat less than one-half wider than long, deeply, moderately and very closely punctate, sometimes with a median smooth line centrally; apex half as wide as the base, the basal lobe rather more than a fourth the total width; elytra obtusely parabolic, at the feebly prominent humeri barely visibly wider than the prothorax, three-fourths to four-fifths longer; strie deep and abrupt, with minute and remote squamules, the intervals densely punctured and squamose, three or four times as wide as the strie, the scales uniform. Length (92) 4.3-4.6 mm.; width 1.8-2.0 mm. Colorado (locality unrecorded). Three ex- PENEBIESE aharet- sleielai ic mite tohecrhataiete tat aR eto hse te are ochreosus n. sp. Form still narrower and even more cuneiform posteriorly, the upper surface clothed with white scales, more slender and less dense than in ochreosus and not broadly dense and confused on the strial intervals as in the preceding, but evidently separated, although very 420 MEMOIRS ON THE COLEOPTERA * conspicuous, forming about two irregular lines on each; beak (2) nearly as in the preceding, except that the antenne are inserted more evidently beyond the middle though similar otherwise, or (o") more quadrate in section, sculptured, squamulose and subopaque, rather more tapering, more abruptly bent at base but not differing much in length, the antenne inserted only a little further forward and not so apical as in scutellum-album and allied species; outer funicular joints not evidently wider or transverse, the basal tooth of the club small and feeble; prothorax two-fifths wider than long, rather coarsely, very densely punctate, sometimes with traces of a narrow impunctate line centrally; elytra more elongate, fully two- fifths longer than wide, at the obtuse humeral prominences only very slightly wider than the prothorax, four-fifths longer, the strie rather coarse, with scarcely discoverable squamules, the intervals coarsely, closely punctate and two to three times as wide as the strie. Length (Sf 2) 3.65-4.5 mm.; width 1.5-1.9 mm. Colorado (Greeley),— Wickham: @hreevexamples!;.4-. 2... --) eae greeleyi n. sp. 6—Oblong, black, with more or less rufescent legs, dull, clothed with numerous whitish scales above, slender and well separated on the pronotum, linear but broader on the strial intervals, where they are loosely arranged in about two lines on each; scales beneath large, white and dense; beak in the female nearly straight and feebly tapering, broadly arcuate in about basal half, smooth, but little longer than the head and prothorax; antenne inserted slightly beyond the middle, rufous, with piceous club; prothorax not quite one-half wider than long, the apex feebly constricted, fully half as wide as the base, the basal lobe a fourth the total width; punctures rather coarse, very dense, the smooth median line narrow and much abbreviated; elytra with broadly arcuate oblique sides and not very obtuse apex, nearly a third longer than wide, at the rather prominent humeri only slightly wider than the prothorax, three-fourths longer, the strie moderate; intervals from two to three times as wide as the strie, rather coarsely punctato-rugose. Length (2) 3.7-4.4 mm.; width 1.5-2.0 mm. Dakota. Four examples... .quadricollis n. sp. 7—Form rather narrowly rhomboid-oval (o") or stouter (9), black throughout, clothed above with conspicuous though not compactly dense white scales, slender and well separated on the pronotum, linear but thick, very white and arranged in two loose uneven rows on each strial interval, large, oval, dense and white beneath; beak (o) stout, dull, squamulose, evenly arcuate, longer than the head and prothorax, with the antenne inserted well beyond the middle and the tooth of the club small and inconspicuous, or (@) a little more slender but not longer, smooth, arcuate, somewhat more so at base, with the antenne similarly inserted; prothorax a third to one-half wider than long, the parallel and nearly straight sides broadly rounding and converging in about apical half; punctures rather coarse, very dense, with feeble smooth line centrally; scutel- lum quadrate, densely albido-squamose; elytra a third to fourth longer than wide, the notably oblique sides only very feebly arcuate, the apex rapidly obtuse, at the moderate humeral prominences BARIN 421 distinctly wider than the prothorax, almost twice as long; strie rather coarse; intervals generally two to three times as wide as the striz, rugosely punctate, becoming very narrow toward the suture posteriorly. Length (co 2) 3.2-3.7 mm.; width 1.35-1.6 mm. Kentucky (locality unrecorded). Five examples.. .inspectus n. sp. Form elongate-subovoidal, convex, much larger, black throughout, the , squamules of the pronotum small, slender, sparse and very incon- spicuous, those of the strial intervals large, suboval, bright yellowish, in two or three irregular series and close, though not dense, those of the under surface oval, white and dense; beak in the male not quite as long as the head and prothorax, stout, feebly arcuate and slightly tapering, roughly sculptured, opaculate, with the antenne inserted distinctly beyond the middle, the tooth of the club small, obtuse and not very prominent; prothorax unusually large, barely a fifth wider than long, the sides evenly and distinctly arcuate, rounding inward basally, widest before the base; apex feebly constricted, half as wide as the base, which is bisinuate, the lobe moderate; punctures moderate but very dense, with vestiges of a narrow smooth line centrally, the scutellum subogival, densely squamose; elytra very obtusely parabolic, a third longer than wide, at the moderate humeral prominences barely at all wider than the pro- thorax, only about three-fifths longer; strize very deep, rather coarse and abrupt; intervals from two to nearly three times as wide as the striz, punctato-rugose, the first much narrowed posteriorly. Length (co) 4.8 mm.; width 2.1 mm. Kentucky (locality unre- corded) 5 (One examplens.cs. Ss. soe obesella n. sp. Interstitial punctures notably fine, well separated................... 6 6—Form oblong-oval, moderately shining; beak in the female as in latipennis, but not quite so arcuate and a little shorter, though somewhat longer than the prothorax, the antenne similar; pro- thorax still shorter, fully a third wider than long, the sides more evenly arcuate from base to the rather strongly tubulate apex, which is much more than half as wide as the base; sculpture nearly similar, the smooth median line entire; elytra narrower, obtusely subparabolic, with feebler humeral prominences, slightly wider than the prothorax and fully twice as long; grooves less coarse; intervals somewhat more than twice as wide as the grooves; punctures fine, confused throughout basally but tending to form finer single series posteriorly. Length (2)2.7mm.; widthi1.15mm. Florida (Enter- PRISE) G05. 85 ob cers ee ee en was aa te eee tubifera n. sp. Fo m more elongate, somewhat more shining; beak in the male rather thick, feebly arcuate, dull, distinctly sculptured and not quite as long as the prothorax, the antenne at four-sevenths; prothorax narrower and longer, about as long as wide, the sides very evenly and moderately arcuate in anterior, becoming less so and parallel in basal, half, the moderately constricted apex much more than half as wide as the base; punctures nearly similar, the smooth line barely attaining the apex; elytra fully a fourth wider than the prothorax and twice as long, the sides parallel and nearly straight behind the feeble humeral prominences, rounding in about apical half to the obtuse apex, with traces of feeble subapical Centrinogyna-like sinuation; strie and punctures nearly as in the preceding; abdomen of the male with a deep rounded impression medially at base, the BARINE 481 porrect prosternal spines slender, shorter than in confusa. Length (o") 3.3 mm.; width 1.2 mm. Illinois (southern).. .illiniana n. sp. Beeacotnorax nearly as\long: asiwidere. de. iss. cece eee ec ace ss seers 7 Prothorax much more abbreviated, distinctly shorter than wide....... 8 7—Body small, elongate-oval, convex, feebly shining; beak notably short in both sexes, dull and sculptured, nearly straight, but arcuate apically (o”), or very slender, slightly and evenly arcuate and nearly smooth (@Q), the antennz at four-sevenths (0) or slightly behind the middle (2); prothorax with the sides feebly converging, grad- ually a little more arcuate apically, the feebly constricted apex much more than half as wide as the base; punctures moderately close-set and distinct, the median smooth line not quite attaining the apex; basal lobe short and broadly rounded; scutellum small, nude as usual; elytra parabolic, a little wider than the prothorax and about twice as long; grooves moderate but deep, not crenulate, the intervals twice as wide as the grooves to somewhat less; pro- sternum of the male with a narrow anterior fossa, devoid of any trace of spines, the abdomen with rounded basal impression. Length (@ Q) 2.2-2.4 mm.; width 0.9-1.1 mm. Florida (Enterprise). [PIRES (Bjoern hie, Aid ein ho 6.0 ee Se fraterculus Csy. Body larger and stouter, more oblong-oval and less convex, subaluta- ceous; beak in both sexes nearly as in the preceding; prothorax larger and broader, not quite so nearly as long as wide, the sides similar, the more distinctly tubulate apex slightly more than half as wide as the base; punctures and smooth median line similar; elytra much broader, more ovulate, with similarly very feeble humeral prominences, distinctly wider than the prothorax and about twice as long; grooves, intervals and sculpture nearly similar, the slender setiform squamules more numerous; prosternum of the male with a very deep circular pit and two slender and well developed porrect spines, the abdomen more acutely and narrowly impressed at the middle of the rather strongly punctured first segment. Length (@ 2) 2.6-2.8 mm.; width 1.15-1.25 mm. Florida, Alabama and New Jersey (Newark). Seven specimens........... diffidens n. sp. Body more narrowly oval and rather more convex, feebly shining; beak in the male short, not as long as the prothorax, moderately thick, more shining and less closely punctate than usual in that sex, similar in form to that of the preceding and with similar small dorsal tumidity adjoining the feeble transverse impression of the head; prothorax as long as wide, longer and narrower than in diffidens, the sides gently rounding, becoming straighter and subparallel behind the middle, the subtubulate apex narrower, not more than half as wide as the base; punctures somewhat more separated, the smooth median line biabbreviated; elytra narrower and with the similarly feebly oblique sides less arcuate, distinctly wider than the prothorax and not quite twice as long, the subuniserial to confused punctures closer and evidently stronger; intervals twice as wide as the grooves to distinctly less; male with prosternal porrect spines and deep perforate fovea, the deep medio-basal impression of the abdomen T. L. Casey, Mem. Col. IX, Feb. 1920. 482 MEMOIRS ON THE COLEOPTERA much longer, extending almost through the second segment. Length (o') 2.8 mm.; width 1.15 mm. New York (locality unrecorded). Oneexamples) 15.3)... putes ons o.5 2 sje eua ee eee fultonica n. sp. 8—Form narrowly oblong-oval, not very convex, rather dull in lustre; beak in the female very slender, evenly arcuate, as long as the prothorax, smooth, squamulose at each side above basally, the antenne at the middle; prothorax a fifth wider than long, the sides parallel in basal half, rounding gently thence to the subtubulate apex, which is three-fifths as wide as the base; punctures small but close-set, the narrow smooth line not attaining the apex; elytra narrowly subparabolic, almost one-half longer than wide, rather obtusely rounded at apex, only slightly wider than the prothorax and somewhat more than twice as long; grooves moderate, deep; intervals about twice as wide as the grooves, each with a single regular series of distinct punctures. Length (Q) 2.25 mm.; width 0.85 mm. Mississippi (Vicksburg). One example.....#gra n. sp. Form broader, oblong-suboval, with wider and relatively shorter elytra, slightly more shining; beak (c’) sparsely punctate and shining, of the usual form and much shorter than the prothorax, or (2) equal to the latter, slender, smooth and more arcuate; antenne well beyond or slightly behind the middle respectively; prothorax a fourth to fifth wider than long, the sides as in the preceding, the subtubulate apex about three-fifths as wide as the base; punctures stronger and less close-set than in the preceding, the smooth line not attaining the apex; elytra a fourth longer than wide, the sides less oblique and more arcuate with the apex obtusely rounded, distinctly wider than the prothorax but not quite twice as long, the sculpture similar, except that the punctures of the interstitial series are finer and less close-set; abdomen of the male strongly impressed medially through the first segment, the prosternum not deeply fossate and with two very short and slender, porrect spines. Length (of 9) 2.3-2.45 mm.; width 0.95-I.0 mm. North Carolina (Ashe- willevands Black sMitss) s-eaeeeeeneertereny sees ashevillensis n. sp. 9—Body oblong-oval, moderately stout, feebly shining, piceous-black; beak in the female very slender, moderately arcuate and in great part smooth, unusually short, not as long as the prothorax, feebly swollen above at base and more punctulate; antennz barely behind the middle; prothorax a fifth or sixth wider than long, the sides broadly arcuate, becoming parallel behind the middle, the short tubulate apex slightly more than half as wide as the base; punctures moderate, close-set, the smooth line not quite entire; elytra obtusely parabolic, slightly wider than the prothorax and twice as long; strie moderate, the intervals two or three times as wide as the grooves, minutely, loosely and more or less confusedly punctulate, the punctures occasionally forming partial single series. Length (Q) 2.8 mm.; width 1.15 mm. Colorado...... curtulirostris n. sp. Body much larger and stouter, oblong-suboval, alutaceous, black; beak in the male three-fourths as long as the prothorax, sparsely punctate, straight, bent at the point of antennal insertion near four-sevenths; prothorax a fifth wider than long, the sides parallel, broadly arcuate, BARINE 483 more rapidly rounding near the apex, which is tubulate and half as wide as the base; punctures moderately small, separated medially by nearly twice their widths, gradually dense and longitudinally subrugulose laterally; smooth line distinct; elytra evenly parabolic, a third longer than wide, distinctly wider than the prothorax but only three-fourths longer; grooves deep, shining; intervals twice as wide as the grooves, with fine and well spaced punctures, loosely confused more or less on all the intervals; male abdomen distinctly impressed medio-basally, the prosternum with a very deep but unusually small perforation and two porrect spines, extending beyond the apex. Length (o”) 3.35 mm.; width1.45mm. _ Florida. surrufipes n. sp. 10—Body oval or subventricose, smooth, the pronotal punctures small PMMETAneD INCOUSPICUOUSHen ies fesse eee se nclticlceecle eases II Body narrow, parallel, the pronotum with rather coarse and conspicuous punctuation, the vestiture of slender squamules more or less distinct; size always very small; beak strongly sculptured in both sexes.. . 32 I1—Vestiture of slender sparse squamules distinct on the elytra... ..12 Vestiture very fine, sparse and inconspicuous, sometimes distinct on the dye ea ta ASC sc-e. at nei y RAR once SY. usps aieist ars or aveievalv ny ays ee tabs eve. 15 12—Body shorter, smaller in size and subventricose................ 13 Body larger, elongate-oval in outline; beak more elongate........... 14 13— Body short and stout, rather shining and convex, deep black through- out; beak in the male of the usual form, moderately thick and sculptured, not as long as the prothorax, the antenne at four-sev- enths; prothorax a fourth wider than long, with the sides broadly, subevenly arcuate, becoming parallel and less arcuate basally, the subtubulate apex half as wide as the base; punctures shallow, well separated, becoming fine near the entire smooth line, the squamules feebly evident laterally; elytra barely a fourth longer than wide, broad, the sides feebly oblique and distinctly arcuate, with the apex broadly obtuse, a fifth wider than the prothorax and four-fifths longer, the humeral prominences moderate but distinct; grooves narrow, deep and with small distinct punctures, the intervals between two and three times as wide as the grooves, finely, rather sparsely and confusedly punctate throughout and with the slender squamules whitish, rather close-set and conspicuous, in single lines except on the second and third; squamules beneath very small, slender and sparse but whitish and evident; prosternum of the male with a large and very deeply perforate oval fossa and two well developed porrect spines, extending beyond the head; abdominal impression very faint. Length (oc) 3.0mm.; width1.3mm. Texas MERE WMS VAlle) Leos ossp 1a < os) sakes OME Nate cherghy rac. mundula n. sp. Body more elongate and with relatively still smaller prothorax, the elytral squamules not quite so distinct though evident, becoming rather conspicuous at base, indistinct on the pronotum, notably evident throughout beneath though sparse; color black, the lustre some- what shining; beak in the female very slender, smooth, feebly arcuate and as long as the head and prothorax, with a few punctures and fine squamules at each side of the base above, the antenne 484 MEMOIRS ON THE COLEOPTERA slightly behind the middle; prothorax small, a fifth wider than long, the sides evenly and moderately arcuate, becoming gradually parallel basally, the distinctly tubulate apex more than half as wide as the base; punctures moderate, shallow, distinctly separated, with a smooth discal spot at each side, the impunctate median line not attaining the apex; elytra not quite one-half longer than wide, a third wider than the prothorax and much more than twice as long, the humeral callus distinct; sides parallel and nearly straight, rapidly rounding in about apical half, the apex strongly rounded; grooves deep; intervals more than twice as wide as the grooves, with fine and well separated, uniserial subtransverse punctures and single lines of squamules, more confused on the second. Length (2) 3.35 mm.; width 1.3 mm. North Carolina (Black Mts.),— Beutenmiiller:... oaaseceeties oe crocs: oe ee eee caudex n. sp. 14—Form elongate-oval, convex, black throughout and subalutaceous; beak in the female long, rather slender and feebly, evenly arcuate, moderately punctate and finely subsulcate, longer than the head and prothorax, the antennz about at the middle; prothorax nearly as long as wide, the sides broadly, subevenly arcuate, becoming straighter and parallel basally, the subtubulate apex fully half as wide as the base, the punctures fine and sparse, rather coarse and rugulose at the sides, where the very inconspicuous squamules become more distinct; median smooth line entire; elytra one-half longer than wide, only very slightly wider than the prothorax and about twice as long, the humeral prominences feeble; sides only feebly oblique and subevenly, distinctly arcuate to the broadly rounded and obtuse apex; grooves deep and conspicuous; intervals twice as wide as the grooves, the punctures moderately small, strong and distinct, well spaced in single or narrowly confused lines, the sete small and gray, not close-set but very evident, in single, sometimes irregular lines, more confused on the third; squamules beneath small, sparse and very inconspicuous. Length (2) 3.75 mm.; width 1.5 mm. Florida (Enterprise)............. incolumis n. sp. Form nearly similar but larger and relatively stouter, black, similarly alutaceous, the vestiture similar, except that the setz of the elytra are more confused on most of the intervals, smaller and less distinct, except at base throughout the width, where the whitish hair-like squamules become close and rather conspicuous; beak in the female long, slender, smoother than in the preceding, still somewhat longer and almost perfectly straight, much longer than the head and pro- thorax, the antenne at the middle, slender, with still longer and very slender club; prothorax a sixth wider than long, the subevenly arcuate sides becoming parallel at base, the feebly constricted apex half as wide as the base; punctures well separated, very fine medially, stronger and dense laterally, the smooth line abbreviated anteriad; basal lobe similarly small and feeble; scutellum narrow, nude, emarginate at tip; elytra obtusely ovoidal, slightly wider than the prothorax and barely twice as long; grooves deep and conspicuous; intervals twice as wide as the grooves to slightly more, sparsely, I5— BaRIN= 485 finely and in general confusedly punctate. Length (9) 4.0 mm.; width 1.65 mm. Mississippi (Vicksburg). One specimen. definita n. sp. Form narrowly and subevenly oval, notably elongate and almost Oy TDA GIS Sol ais Rig Rs Gig o-oo Be 8 elu canes oe 16 Form stouter and, even when smail and less stout, evidently subventri- 16—Size larger, alutaceous, the elytra slightly more shining. Convex, deep black; beak in the female feebly arcuate, not quite as long as the head and prothorax, nearly smooth, punctulate closely toward base; prothorax nearly as long as wide, the sides parallel, feebly arcuate, rounding apically, the subtubulate apex much more than half as wide as the base; punctures rather small, shallow and widely separated, closer and stronger laterally; elytra one-half longer than ‘wide, the sides parallel and feebly arcuate, rapidly obtusely, ogivally Size 17— rounded behind, barely visibly wider than the prothorax and fully twice as long; grooves deep; intervals between two and three times as wide as the striz, with single series of small and moderately separated punctures. Length (9) 3.4 mm.; width 1.28 mm. IS EPPS RS RI Sep ao boc Sno So Sees oe eee seminitida Csy. smaller, the entire surface polished and deep black............. 17 Body narrow, parallel, convex, subglabrous; beak in the male rather thick, feebly, subevenly arcuate, rather shining, not densely though distinctly sculptured, about as long as the prothorax, the antenne barely beyond the middle; prothorax about as long as wide, the sides broadly, moderately arcuate, becoming gradually parallel in almost basal half, the subtubulate apex broad, two-thirds as wide as the base; punctures small, sparse; smooth median line obliterated from slightly before the middle; elytra parallel, three-fifths longer than wide, barely visibly wider than the prothorax and more than twice as long, the sides nearly straight, subcircularly rounded in about apical third; striz deep but not coarse; intervals more than three times as wide as the grooves, with single series of small and widely spaced punctures; male abdomen feebly impressed medially at base, the prosternum not perforate and with very short, broadly angulate elevations in place of spines. Length (co) 2.85 mm.; width 1.1 mm. Florida (Enterprise)............. mediocris n. sp. Body smaller, parallel, moderately convex, subglabrous, the legs piceous; beak in the male rather thick, very short, feebly, subevenly arcuate, slightly shining though evidently sculptured, not as long as the prothorax, the antenne near three-fifths, piceo-rufous; prothorax nearly a fourth wider than long, rather wider at the middle than at base, the sides parallel and feebly, subevenly arcuate, the somewhat abruptly tubulate apex three-fifths as wide as the base; punctures fine and sparse, very minute anteriorly; elytra two-fifths longer than wide, barely visibly wider than the prothorax and more than twice as long, with small but evident humeral callus; sides parallel and nearly straight, gradually rounding behind the middle; grooves fine; intervals four times as wide as the grooves, each with a single series of very minute, remotely separated punctures; male abdomen 486 MEMOIRS ON THE COLEOPTERA impressed medially at base, the prosternum unarmed, feebly im- pressed along the middle. Length (co) 2.1 mm.; width 0.8 mm. Districtiof | Columbiaveree eee - = + - ® £4. sane eae lucidula n. sp. 18—Size moderate to rather large, the prosternum with well defined ante-coxal spines in the male....... . .....6/++ 5020+ oes eee 19 Size very small, the spiniform processes wanting or very feebly de- veloped Bae eet: eee sie «sd stent Sees ies ee 28 19—Body not very evidently ventricose, the elytra but little wider than the prothoraxs.c eo. 6 osc see ca ees oo oe nl pe 20 Body very evidently subventricose, the elytra decidedly wider than the prothorax.. ¢ fas deeds nse es etlos co ae nes oe eee 24 20—Prothorax subinflated, widest just behind the middle, the sides subparallel and broadly, subevenly arcuate. Body very stout; convex, deep black, rather shining; beak in the female much longer than the head and prothorax, nearly straight, evenly and but just visibly arcuate, nearly smooth; prothorax fully a fifth wider than long, the apex evidently constricted and slightly more than half as wide as the base; punctures fine and sparse; smooth line lost anteriorly; elytra two-fifths longer than wide, slightly wider than the prothorax and not quite twice as long, with feeble humeral callus; sides parallel, gradually and obtusely, ogivally rounded in apical half; grooves deep; intervals alternating in width, from more than two to more than three times as wide as the grooves, with small but distinct, sparse punctures, alternately in single line and con- fused. Length (2) 3.6 mm.; width 1.5 mm. Texas (Columbus). . ebena Csy. Prothorax not inflated, widest at or near the base.................. 21 21—Prothorax with the sides converging from the base............. 22 Prothorax with the sides parallel and feebly, subevenly arcuate, gradually a little moreso toward the briefly subtubulate apex; integuments throughout rather shining... ... 2.52...) «<1- sls oe eee 23 22—Prothorax but little shorter than wide, the converging sides becoming gradually and but slightly more arcuate anteriorly, the tubulate apex fully half as wide as the base, black throughout; beak evenly and very feebly arcuate in both sexes, thick (o"), strongly sculptured and rather sulcate, as long as the head and prothorax, or (2), very thin, smoother and distinctly longer; antennz very slightly behind the middle (2) or at four-sevenths (co); prothorax a fifth wider than long, the sides moderately and subevenly arcuate, slightly converging throughout; punctures distinct, well separated, grad- ually minute toward the imperfect median smooth line; elytra two- fifths longer than wide, only slightly wider than the prothorax and fully twice as long, parallel, obtusely and ogivally rounded in about apical half; grooves deep, very feebly subcrenulate basally; intervals only just visibly alternating, flat, with punctures as in the preceding but very much more minute; male abdomen feebly impressed medio-basally, the prosternal ages extending rather beyond the apex. Length (o" 2) 3.5-3. 75 mm. ; width 1.33-1.4 mm. Missis- sippi (Vicksburg). Three Saecimens.. Sos eOees .corvina n. sp. Prothorax much shorter than wide, the feebly Conwerniae sides evenly BARINE 487 and very feebly arcuate, rapidly rounding and becoming more transverse in apical fourth to the short but strongly tubulate apex, which is fully half as wide as the base; color black, the surface less convex than in corvina, moderately shining; beak in the female slender, much shorter than in corvina, barely as long as the prothorax, only just visibly arcuate and nearly smooth, the antenne submedial; prothorax fully a third wider than long, the punctures distinct, rather well separated, the smooth line not entire; elytra relatively long, more than one-half longer than wide, only slightly wider than the prothorax and nearly two and one-half times as long; strie deep, feebly subcrenulate; intervals subequal, about three times as wide as the grooves, the punctures sparse, minute and subuniserial. Length (Q) 3.2 mm.; width 1.28 mm. Missouri. longipennis n. sp. 23—Form oblong-oval, rather convex, black throughout, the sparse setuliform squamz of the upper surface rather more evident than usual in this section; beak in the female slender, smooth, almost straight and as long as the head and prothorax, the antenne medial; prothorax a fourth wider than long, the sides gradually a little more rounding in apical third to the feebly constricted apex, which is rather more than half as wide as the base; punctures small but somewhat strong and well separated, the broad smooth line lost anteriorly; elytra three-sevenths longer than wide, slightly wider than the prothorax and distinctly more than twice as long, the sides just visibly converging and very slightly arcuate, obtusely parabolic in apical third; grooves deep, not at all crenulate and half to a third ‘as wide as the intervals, which are finely, loosely and unevenly uniseriately punctate. Length (92) 3.0 mm.; width 1.2 mm. Missouri (locality unrecorded). One example...... rivularis n. sp. Form elongate-suboval, smaller and narrower than the preceding, convex, rather strongly shining, deep black; beak in the female a little longer, perceptibly but feebly, evenly arcuate, feebly and sparsely sculptured and slightly longer than the head and prothorax, the antenne medial; prothorax a fifth wider than long, the sides arcu- ate, a little more so in apical fourth to the very broad, feebly con- stricted apex, which is two-thirds as wide as the base; punctures fine, well separated, the smooth line narrower, not entire; elytra with nearly obsolete squamule, three-sevenths longer than wide, slightly though evidently wider than the prothorax and much more than twice as long, the sides parallel, rounding in apical half, less obtuse at tip than in the preceding; striz finer but deep, not crenu- late; intervals fully four times as wide as the grooves, minutely and loosely, not very evenly uniseriately punctate. Length (9) 2.7 mm.; width 1.1 mm. Texas (Austin). One specimen, taken (sigs THUS WAS HS) eee ene egiaion Acco h os aoc ean austiniana n. sp. Form nearly as in rivularis but with the thoracic sides a little less parallel, being just visibly converging, also more rapidly rounding apically to the tubulate apex, which is more than half as wide as the base; beak in the female nearly as in rivularis, but a trifle less slender, in the male moderately thick, more sculptured, short, not longer than 488 MEMOIRS ON THE COLEOPTERA the prothorax, the antenne at four-sevenths, where the beak is gradually and feebly bent; prothorax nearly as in rivularis but somewhat more finely punctate; elytra two-fifths longer and per- ceptibly wider than the prothorax and twice as long (o’), or more (2), the sides parallel, obtusely rounded in nearly apical half; striz and intervals almost as in vivularis in form and sculpture, but with the latter slightly convex; male with the abdominal basal im- pression very faint, the prosternum perforately fossate, with two very moderate spines, extending but little more than half way to the apex. Length (107, 42) 2.8-3.1 mm.; width I.15-1.25 mm. Houisiana (Covington) paeeei .-n6- 1-5 eeee eeeee difficilis n. sp. 24—Male with two short prosternal spines.................-...--- 25 Male with the prosternal spines long and porrect; body much stouter in formes... Gee ee os as ce dnd er 26 Male without trace of prosternal spines and only feebly impressed. . .27 25—Prothorax much shorter than wide; beak unusually short in both sexes; body narrow, convex, deep black and somewhat shining; beak (o') rather thick, evenly, feebly arcuate, dull and densely sculptured, not as long as the prothorax, or (9), more slender, feebly arcuate, rather strongly sculptured and about as long as the prothorax; antenne at four-sevenths (co) or barely beyond the middle (2); prothorax between a fourth and third wider than long, the subparallel and feebly arcuate sides more rounding anteriad, the tubulate apex much more than half as wide as the base; punc- tures small and rather sparse, the smooth line not entire; elytra a little more than one-half longer than wide, much wider than the prothorax and two and one-half times as long; grooves narrow; intervals between three and four times as wide as the grooves, with very fine and remote punctures in single series; male abdomen distinctly impressed medio-basally, the prosternal pit very deep, the spines semi-erect. Length (o’ 2) 2.7-2.85 mm.; width 1.15- 1 2ymnin |) ndianayandek@nsasseie | ear eee eee puteifera Csy. Prothorax subcylindric, narrow and as long as wide; beak less abbrevi- ated; body rather strongly shining, deep black; beak in the male rather shining, though somewhat closely sculptured, thick, evenly but barely visibly arcuate and fully as long as the head and pro- thorax, the antenne near three-fifths; prothorax with the parallel sides feebly arcuate, slightly more so apically, the tubulate apex broad, two-thirds as wide as the base; punctures small but rather deep and distinct, well separated, the smooth line as in the pre- ceding; surface more shining; elytra shorter, only a third longer than wide, two-sevenths wider than the prothorax and twice as long, the parallel and nearly straight sides rounding behind the middle, the humeral callus feeble; strize moderate, deep; intervals almost three times as wide as the grooves, with irregularly single series of fine and very feeble, rather well separated punctures; male with the abdomen distinctly impressed medially through the first two segments; prosternum nearly as in the preceding. Length (oc) 2.65 mm.; width 1.15 mm. Illinois (locality unrecorded). sectator n. sp. BARIN-E 489 26—Body rather stout, oblong-suboval, convex, deep black, somewhat shining, a little more so in the male; beak in that sex just visibly arcuate, strongly sculptured, moderately thick and about as long as the prothorax, or (Q), very slender, similarly very feebly, evenly arcuate, almost smooth and not quite as long as the head and pro- thorax; antenne at the middle (2), or at four-sevenths (0); prothorax slightly shorter than wide, the sides very feebly con- verging (Q) or parallel (co), feebly, subevenly arcuate, gradually more so anteriorly, the feebly constricted apex half as wide as the base, somewhat less in the female; elytra only two-fifths longer than wide, a fifth wider than the prothorax and a little more than twice as long, parallel, obtusely rounded in apical half; strize moder- ately coarse; intervals between two and three times as wide as the grooves, with fine and loose punctuation, generally in single series but confused on the second, third and fifth, less so in the male, the intervals subequal in width throughout; male abdomen feebly impressed medially at base, the prosternum with a deep perforation, the spines extending far beyond the thoracic apex. Length (o" 2) 3.2-3.5 mm.; width 1.25-1.6 mm. Indiana, Illinois and Missouri. convexula n. sp. 27—Form narrower than in convexula, elongate-oval, convex, feebly, the elytra more strongly, shining, deep black throughout; beak (c") only moderately stout and sculptured, straight, bent slightly at the antennal insertion at three-fifths, as long as the prothorax, or (2), very slender, nearly smooth, evenly and very moderately arcuate and distinctly longer than the head and prothorax, the antenne medial; prothorax slightly shorter than wide, the subparallel sides broadly arcuate, the subtubulate apex a little more than half as wide as the base; punctures moderate, well separated, the smooth line as in the preceding species; elytra almost one-half longer than wide, a fourth to fifth wider than the prothorax and distinctly more than twice as long, subparallel, rounding in apical half; grooves moderate; intervals from two to three times as wide as the grooves, with single or confused series of small but evident, well separated punctures; male abdomen broadly impressed at the middle of the first segment; prosternum feebly impressed. Length (o 2) 2.65-3.1 mm.; width I.0-1.28 mm. District of Columbia. concurrens Csy. Ds—Bloahy Coral orhenahis MAC ob IRA MRED Genco Gob aoe oO ee erCe ae 29 iByore lS? setey iil o} Ris es Ye (2) Ree eRe ect aR oN a cto oO Ch ae cit: orca Re ene ean au 29—Prothorax large, only very slightly narrower than the elytra. Body oblong-suboval, convex, shining, deep black throughout; beak in the male rather thick, somewhat closely sculptured, just visibly arcuate and as long as the prothorax, the antennz near three-fifths; prothorax between a fourth and third wider than long, the sides broadly arcuate, becoming nearly straight and parallel in about basal half; punctures rather strong, moderately well separated, with a smooth discal spot at each side and a nearly entire smooth median line; elytra two-fifths longer than wide, evidently more than twice as long as the prothorax, oblong, subparallel, obtusely though 490 MEMOIRS ON THE COLEOPTERA gradually rounded behind; striz deep but not very coarse; intervals between two and three times as wide as the strie, each with a single line of very distinct, not very small though shallow, moderately separated punctures; prosternum impressed along the median line. Length (co) 2.65 mm.; width 1.0 mm. North Carolina (Southern Pinés)}——Mianee reer tee: io oi. sees sean eee erebea n. sp. Prothorax relatively smaller, much narrower than the elytra......... 30 30—Form oblong, moderately convex, deep black; beak (o”) stout, feebly arcuate, strongly sculptured and as long as the prothorax, or (Q), more slender, feebly arcuate, nearly but not quite smooth and fully as long as the head and prothorax; antenne at four-sevenths (o") or at the middle (2); prothorax a sixth (o") or a fifth (Q) wider than long, the sides feebly converging and broadly, subequally arcuate, the very short subtubulate apex three-fifths as wide as the base; punctures fine, sparse, the smooth line not entire; surface alutaceous; elytra shining, a third to two-fifths longer than wide, a fourth wider than the prothorax and much more than twice as long, parallel and nearly straight at the sides, rounding rapidly in about apical third; striae moderate, the intervals about three times as wide as the grooves, each with a single series of minute but evident, remotely spaced punctures. Length (o 9) 2.4-2.6 mm.; width 0.85-I.1 mm. Southern Illinois and Missouri (St. Louis). Five examples... 005 caverta erates. cit cis avs ee ate errs amnicola n. sp. Form oblong, more shining throughout, deep black; beak (2) only moderately slender and distinctly sculptured, feebly arcuate and as long as the head and prothorax, the antenne at about the middle; prothorax small, between a fourth and third wider than long, the sides parallel, rounding beyond the middle to the tubulate apex, which is three-fifths as wide as the base; punctures fine and sparse, the smooth line distinct; elytra more elongate, fully one-half longer than wide, more than a fourth wider than the prothorax and two and two-thirds times as long; sides parallel and straight, obtusely rounded in about apical half; grooves fine but deep; intervals four times as wide as the grooves, each with a single series of extremely minute and feeble, well separated punctures, invisible except under careful observation. Length (Q) 2.5 mm.; widtho.9 mm. North Carolina (Southern Pines),—Manee. . eek: -nanella n. sp. 31—Body elongate-suboval, rather convex, “somene? shining, deep black; beak in the male short, not quite as long as the prothorax, moderately thick, not very densely sculptured and just visibly arcuate, the antenne at three-fifths; prothorax a fifth wider than long, the sides converging and feebly, evenly arcuate from base to the tubulate apex, which is three-fifths as wide as the base; punc- tures fine and rather sparse; elytra oblong, two-fifths longer than wide, a fourth wider than the prothorax and two and one-half times as long, parallel, gradually rounded behind the middle; strie moder- ate, deep; intervals rather more than three times as wide as the grooves, each with a single series of minute but evident, remotely spaced punctures; male abdomen moderately impressed at the BARINE 491 middle of the first segment. Length (07) 2.35 mm.; width 0.8 mm. BNEW an NOG eas cw Weil ate cilal tsi ak tied acc! suck suajetas le: eustae se ayer confinis Lec. Body nearly similar to that of confinis but with the beak in the male not so short, being as long as the prothorax, with the antenne at four-sevenths; prothorax nearly similar, but with the sides less converging and more strongly, subevenly arcuate to the apex, which is more briefly and less sharply tubulate; elytra longer, one-half longer than wide, only a fifth wider than the prothorax and more than two and one-half times as long, more gradually and narrowly round- ing behind; striz almost similar but relatively coarser at base; interstitial series composed of very minute, distant and feeble punctures, even less distinct than in confinits. Length (oc) 2.35 mm.; ideo One mim: WLowalta nc. wekacictels sk acte soe nels civica n. sp. Body more narrowly elongate-oval, deep black and shining throughout; beak in the male feebly, evenly arcuate but more so thanin confinis, equal in length to the prothorax, the antenne at four-sevenths, the sculpture strong but loose; prothorax smaller, a sixth wider than long, the sides less converging, parallel basally, evenly and rather strongly arcuate throughout, the apex only very feebly and briefly constricted and almost two-thirds as wide as the base; punctures much deeper, coarser and separated by scarcely more than their own diameters, the smooth line indistinct; elytra narrower and longer, three-fifths longer than wide, nearly a fourth wider than the pro- thorax and two and three-fourths times as long; sides just visibly converging, evenly and moderately arcuate throughout to the rather rapidly rounding apex; strie moderate; intervals fully three times as wide as the grooves, each with a single series of extremely minute though observable, widely spaced punctures. Length (07) 2.25 mm.; width 0.75 mm. Virginia (locality unrecorded). micans n. sp. 32—Elytral strie remotely, moderately punctate and crenulate. Body oblong, moderately convex, alutaceous and deep black throughout; squamules above white, rather sparse but broader than usual and very distinct, forming a single line on each strial interval; beneath ~ closer and more conspicuous than usual and rather dense on the met-episterna; beak in the female roughly sculptured, slender, feebly arcuate and as long as the prothorax, the antenne medial, short, the club longer and thicker than in preceding types, as long as the five preceding joints; prothorax a fifth wider than long, the sides parallel, gently rounding in about apical half, the apex tubu- late and three-fifths as wide as the base; punctures sparse, distinct, the smooth median line not well defined; elytra oblong, with sub- parallel arcuate sides and obtuse apex, just visibly wider than the prothorax and barely twice as long; strie not coarse; intervals three times as wide as the striz, with single series of fine and well spaced punctures; prosternum with two small fovee arranged transversely at apex. Length (2) 2.2 mm.; width 0.75 mm. shexas! (Columbus) hs te ootes lect ee nee woes bees benigna n. sp. Elytral strie with the punctures widely separated, not crenulating the “WRRUEPRELRT OES eS a ota oieea e taco ie a aes cE ee 33 492 MEMOIRS ON THE COLEOPTERA 33—Form stout, oblong, convex, deep black and subalutaceous; squam- ules above white, distinct but sparse and finer and less conspicuous than in the preceding, forming single interstitial lines, short and sparse on the under surface, denser on the met-episterna; beak in the female evenly, moderately arcuate, distinctly sculptured, slender and not quite as long as the prothorax, the antenne medial, the club narrower than in benigna; prothorax large, scarcely at all wider than long, the sides parallel, gently rounding from before the middle, the tubulate apex two-thirds as wide as the base; punctures rather coarse, close anteriorly, sparser basally, the median smooth line narrow but well defined and entire; elytra short, the sides feebly arcuate to the obtusely rounded apex, as wide as the pro- thorax and three-fourths longer; striae moderate, the punctures widely spaced but evident; intervals nearly as in the preceding, the punctures. sparse and very minute; ‘prosternum similar. Length (Q) 2.35 mm.; width 0.88 mm. Florida (Baldwin)...amica n. sp. Form very much narrower, less convex, deep submetallic black, the lustre rather shining; squamules above sparse and rather fine but distinct in single interstitial lines, on the under surface sparse but closer on the met-episterna; beak sculptured in both sexes and feebly arcuate, as long as the prothorax in the female, evidently shorter and rather more arcuate in the male; prothorax as long as wide, the sides parallel, rounding rather rapidly near the tubulate apex, which is two-thirds as wide as the base; punctures strong and well separated throughout; elytra two-fifths (o’) to one-half (2 ) longer than wide, the sides parallel and nearly straight, rounding rather rapidly behind, as wide as the prothorax and three-fourths longer; striz notably fine; intervals with minute and widely separ- ated serial punctures. Length (o' 9) 1.65-1.9 mm.; width 0.5- 0.7 mm. Florida (Enterprise and elsewhere) and North Carolina (Southern Pines). Ten specimens................. concinna Lec. Form intermediate in stoutness between the two preceding species, parallel, deep black, slightly shining, the sparse squamules as in concinna, shorter and less conspicuous than in amica; beak in the male rather slender, conspicuously sculptured, feebly and subevenly arcuate and as long as the prothorax, the antenne at four-sevenths; prothorax nearly as long as wide, the sides feebly, subevenly arcuate, gradually parallel basally, the apex only feebly constricted and three- fifths as wide as the base; punctures coarser than in concinna, these and the median line nearly as in amica; elytra nearly as in concinna but broader, three-fourths longer than the prothorax and exactly equal in width; striz not so fine, the fine remote interstitial punc- tures nearly similar, much feebler and less conspicuous than in amica; anterior coxe separated by half their width. Length (co) 2.0 mm.; width 0.65 mm. Texas (Houston)....... houstoni n. sp. The species of this genus are very numerous but are well defined as a rule, and should be easily identified by the characters recorded above. The concinna section is very strongly differentiated, as is BARINA 493 also the confusa section, the latter having notably strong and close thoracic punctuation. In stating the length of the beak, the language here used should be taken literally; comparisons are made with the prothorax alone, or with the head and prothorax, the former should never be interpreted as equivalent to the latter. Cylindridia n. gen. In this group the body is narrow, convex, parallel and cylindric in form, subglabrous and with shining and very sparsely, finely punctured integuments. In the male the prosternal spines are greatly developed, extending, from a dorsal viewpoint, far in front of the head as a rule, and, just in front of them, there is a deep rounded fossa. The antenne are of the usual type in the preceding genus, the beak not separated from the head by a decided depres- sion, and the scutellum is nude and subquadrate. Besides the type of the genus, Centrinus prolixus Lec., and Limnobaris nitidissima Csy., we have the two following species: Cylindridia simulator n. sp.—Slender, cylindric, rather strongly shining, deep black, with piceous tarsi, the squamules above very small and remote, slightly more visible at the thoracic sides; beneath they are extremely small and sparse but closer, whiter and more distinct on the met-episterna; beak (c7) stout, feebly arcuate, moderately punctulate and as long as the prothorax, or (2), more slender and smoother, feebly arcuate and a little longer than the prothorax; antenne at the middle (co) or slightly behind the middle (Q); prothorax barely as long as wide (@), or longer than wide (co), the parallel and almost straight sides rapidly rounded apically to the tubulate apex, which is nearly three- fifths as wide as the base; punctures very fine and sparse, more distinct laterally; elytra more than twice as long as wide, very slightly wider than the prothorax and distinctly more than twice as long, the sides parallel and straight, obtusely rounded in about apical third; humeral callus small but evident and abrupt; striz fine; intervals nearly five times as wide as the grooves, each with a single series of small and widely distant punctures; male with the tip of the pygidium exposed, the abdomen narrowly impressed medio-basally, the prosternal spines long and testaceous, curving outwardly beyond the head. Length (o 2) 2.6-3.2 mm.; width 0.7-0.9 mm. Colorado (Greeley),—Wickham. Four examples. Differs from prolixa in its smaller size, more slender form and more rapidly and apically rounded sides of the prothorax toward the base of the tubular apex. Cylindridia perexilis n. sp.—Still much smaller and more slender than the preceding, but similar in color, lustre, sculpture and in the small, 494 MEMOIRS ON THE COLEOPTERA very remote and inconspicuous squamules; beak in the female thicker and more arcuate, also more strongly sculptured than in the same sex of simulator, and as long as the head and prothorax, the antenne behind the middle; prothorax narrower, longer than wide, the parallel sides rounding more gradually from anterior third to the tubulate apex, which is fully two-thirds as wide as the base; punctures nearly similar; elytra | between two and three times as long as wide, evidently wider than the prothorax and two and one-half times as long, otherwise as in the preceding throughout and, similarly, with a very feeble sinuation at each side of the rounding apex as in Limnobaris. Length (9) 2.15 mm.; width 0.55 mm. Colorado (Greeley),—Wickham. One specimen. Coming from the same source and locality as the types of simu- lator, I hesitated a long time before deciding to separate this as a distinct species, but the different form of beak, much narrower and more elongate prothorax, with more gradually rounded sides anteriorly, as well as the much smaller size and still more slender outline of the body, seemed to be decisive. The species named Limnobaris tenuis—inadvertently published in the erroneous form “‘tenua’’—by Mr. Blatchley, possibly belongs to this genus, but I have not seen it. Limnobaroides Chmp. This remarkable genus serves to show how large and complex groups may and often do refuse to lend themselves to consistent systematic treatment. Judging by the temperate fauna of North America, for instance, there could be no doubt that a division on the visibility of the pygidium in both sexes is entirely natural and clearly cut, but in Limnobaroides, we have a genus that combines the characters of the two subdivisions mentioned, for in no known instance among the northern species, do male prosternal spines— a purely Centrinid character—appear in species having the pygidium exposed and vertical in both sexes, but in Limnobaroides this aberrant character suddenly appears in well developed form. The genus is purely tropical, extending from southern Mexico to the Amazon. The following is a hitherto undescribed species from the former region: *“Limnobaroides sculpturatus n. sp.—Very stout, oblong-oval and convex, feebly shining, deep black, the legs obscure rufous, the prosternal spines testaceous, long, slender, evenly curved and extending somewhat beyond the head; vestiture above consisting of sparse, slender, rather long and conspicuous squamules, wanting in a large medial pronotal BARINA 495 area and forming single interstitial lines, becoming finer, darker and indistinct on the elytral flanks; squamules beneath whiter, sparse and slender on the propleura, shorter, broader and close-set on the hind body; beak (co) thick, fully half as long as the body, strongly, evenly arcuate, gradually tapering and distinctly sculptured throughout, the antenne at three-sevenths, or (2), smaller, more slender and shorter than in the male, more feebly arcuate, slightly longer than the head and prothorax, tapering, nearly smooth except basally, with the antennz also at three- sevenths; prothorax two-fifths wider than long, the sides strongly, evenly arcuate, becoming less so and parallel in basal half, the feebly constricted apex much less than half as wide as the base; punctures very coarse, narrowly separated; scutellum obtriangular, smooth, flat and nude; elytra scarcely longer than wide, parabolic, a little wider than the prothorax and one-half longer; grooves rather coarse; intervals one-half wider than the grooves, each with a series of coarse and rounded punctures; under surface strongly and closely punctate; anterior coxe separated by their own width, the prosternal surface flat and coarsely punctate in the male. Length (o’ Q) 2.65-2.8 mm.; width 1.2-1.35 mm. Mexico (Frontera, in Tabasco),—Townsend. Three specimens. The much larger and longer beak in the male than in the female, is a very exceptional character, but also occurs, I believe, in some of the Madarids. The female is also smaller and slightly narrower than the male. In the present species the pygidium of the male is vertical, prominently convex and separated from the propygidium by a transverse suture; in the female it is not quite so convex and is sensibly oblique, though entirely exposed; the body is larger, the form more obese and the pubescence much more conspicuous than in expositus Chmp. The following species has the beak in the male similarly large, stout, arcuate and strongly sculptured, though less tapering and relatively not quite so long, the body more narrowly oval and very convex, and the elytral strie very much finer: *Limnobaroides bakeri n. sp—Rather stout, oval, only moderately convex above, deep black and shining, the legs short and clear rufous; scales of the upper surface whitish, sparse and slender on the pronotum and forming single incomplete series on the strial intervals, close and more distinct beneath, though mostly denuded in the type; beak in the male rather strongly sculptured and dull, moderately and subevenly arcuate and fully half as long as the body, feebly tapering from base to apex; prothorax a third wider than long, the sides subparallel and broadly arcuate, gradually more rounding anteriorly to the tubulate apex, which is fully half as wide as the base; punctures coarse, separated by their own diameters, the smooth median line entire; scutellum quadrate, nude and flat, broadly emarginate behind, with acute angles; elytra barely a fourth longer than wide, very obtusely, subevenly parabolic, slightly wider 496 MEMOIRS ON THE COLEOPTERA than the prothorax and one-half longer, the humeri very obtuse; grooves moderate, with small and distant punctures at the bottom; intervals twice as wide as the grooves, each with a single series of fine and widely separated punctures; under surface closely but not very coarsely punc- tate. Length () 2.4 mm.; width 1.2 mm. Brazil (Para),—Baker. The spine before each anterior coxa is erect, slender and straight, and is one-half longer than the thickness of the anterior femora. Haplostethops n. gen. The type of this proposed genus was described by me under the name Idiostethus ellipsoideus, but, with the discovery of several other allied forms, it becomes apparent that the discrepancies between it and species of the twbulatus type, are generic, rather than merely specific. The body is of different outline, being sub- evenly elongate-oval, the humeral callus much less evident, and, beneath, the generally very small remote and inconspicuous squam- ules, become dense white scales broadly toward the sides of the hind body, almost exactly as in Limnobaris T-album and pusio; there is no trace of this character in any of the rather numerous species allied to tubulatus and constituting the true Idiostethus. The prosternum is not armed in the male and the rather deep sulcus of Idiostethus is almost obsolete. Our six species, so far as discovered, may be described as follows: Form moderately stout, but little more than twice as long as wide... .2 Form notably slender, much more than twice as long as wide in both 2—Prothorax less abbreviated. with clearly defined punctures, except at the sides. Body oval, somewhat convex, deep black throughout, moderately shining, the minute remote squamules above scarcely discoverable, closer and more distinct beneath «and dense at the sides of the hind body; beak in the female long, not quite half as long as the body, cylindric, evenly and strongly arcuate and dis- tinctly sculptured, the antenne at the middle; prothorax fully one- half wider than long, the sides converging and feebly arcuate, a little more so toward the tubulate apex, which is more than half as wide as the base; punctures rather strong and close, especially in a longitudinal direction; smooth median line biabbreviated; scutellum small, nude, emarginate behind; elytra one-half longer than wide, an even ogive in outline from base to the narrow apex, slightly wider than the prothorax and two and one-half times as long, the humeral prominences feeble; strie rather coarse, with small distant punctures at the bottom; intervals twice as wide as the grooves, with very fine and loosely confused punctures; under surface rather BARINE 497 ‘strongly and very densely punctate. Length (2) 3.8 mm.; width 1.7mm. Missouri (St. Louis),—Schuster........ fusiformis n. sp. Prothorax shorter, with long anastomosing longitudinal ruge, the punc- mures more or less isolated! basally; os. 3 0.6... cee ecw se eeaines 3 3—Form notably stout, convex, shining, deep black, the legs piceous; squamules of the upper surface very sparse but longer and more distinct than in the preceding, especially on the elytra and in a narrow sublateral thoracic line; under surface nearly similar; beak (co) thick, strongly arcuate, densely sculptured and slightly longer than the head and prothorax, or (@), longer, more slender and less sculptured though not very smooth, strongly, evenly arcu- ate and not quite half as long as the body; antenne near three- fifths (o"), or at the middle (2); prothorax one-half (07) to three- fifths (Q) wider than long, the converging and feebly arcuate sides very rapidly rounded apically to the tubulate apex, especially in the male, the apex barely half as wide as the base; smooth line obliterated (oc), distinct (2); elytra slightly less elongate than in fusiformis, otherwise nearly similar, though more obtuse at apex, nearly three times as long as the prothorax in the female—this sex smaller in size than the male—and with stronger interstitial punc- tures. Length (o 2) 3.4-3.6 mm.; width 1.4-1.5 mm.; Missouri (St. Louis). Taken by the writer. Two specimens. gravidula n. sp. Form less obese but nearly similar in coloration, lustre and vestiture, the elytra differing in outline, being parallel to behind the middle and then obliquely rounding to the apex; beak in the male a little longer, still more evidently longer than the head and prothorax, the latter similar, but with the apex rather more than half as wide as the base; elytra one-half longer than wide, distinctly wider than the prothorax and two and two-thirds times as long; striation nearly similar; intervals having the punctures similar but more inclined to uniserial arrangement on some of the intervals, the punctures very much coarser than in fusiformis. Length (0) 3.0 PALM WICLE ea pT ee LO WAL os cice's asics ce sees ellipsoidea Csy. 4—Prothorax smaller, with more rapidly converging sides; size small. Narrowly fusiform, convex, polished, black, the legs piceous; squam- ules above very slender, almost invisible, more evident though sparse near the sides of the prothorax and on the median line just before the basal lobe; under surface as in the preceding species; beak in the male unusually long and moderately thick, arcuate, densely sculptured and much longer than the head and prothorax, the antennz at four-sevenths; prothorax more than one-half wider than long, the sides strongly converging from the base and straight, moderately arcuate anteriorly, with the constriction very deep, the tubulate apex more than half as wide as the base; punctures rather coarse, in general well separated, partially subconfluent, the smooth line entire and sharply defined; elytra ovulate, more than one-half longer than wide, nearly a fourth wider than the prothorax and between two and three times as long; interstitial punctures not very T. L. Casey, Mem. Col. IX, Feb. 1920. 498 MEMOIRS ON THE COLEOPTERA small but extremely shallow, moderately separated in single series; anterior coxe separated by less than half their width, the prosternum feebly impressed. Length (o’) 2.4 mm.; width 1.1 mm. Missouri (near St. Louis). Two examples............... scaphinella n. sp. Prothorax larger, with less converging sides and less deeply constricted APER jas Slo dD didi Sorel Mele aeletee: isco! a) SR rr 5—Body more oblong-oval, convex, shining, black, the legs black, some- times rufescent; scanty squamules above nearly as in the preceding; beak (co) rather thick, more arcuate but straighter basally, sculp- tured densely and much longer than the head and prothorax, or (9), longer and much more slender, more evenly and strongly arcuate, smoother and not quite half as long as the body; antenne (o") at three-fifths, or (2) at the middle; prothorax more than one-half wider than long, less trapezoidal than in scaphinella, the sides very moderately converging and straight, rapidly rounding to the tubu- late apex, which is much more than half as wide as the base; punc- tures moderate, less coarse in the female, in great part confluent, isolated basally; elytra ovoidal, much longer in the male, slightly wider than the prothorax and between two and three times as long; sculpture nearly as in the preceding, but with the interstitial punc- tures smaller, closer and less regularly uniserial: Length (o 2) 2.5-3.0 mm.; width I.0-1.2 mm. Missouri (St. Louis). Four Specimienss; s...)o neat etn’ Soe marginata n. sp. Body more elongate and more regularly oval, black, subalutaceous, with rufous legs; beak in the male a little longer and thinner and more evenly arcuate than in the preceding, not quite so densely sculptured, much longer than the’head and prothorax, the antenne near three-fifths; prothorax less transverse, only two-fifths wider than long, the sides, apex and sculpture nearly similar, the smooth median line sharply defined and entire; elytra elongate-oval, only slightly wider than the prothorax and two and one-half times as long; strie somewhat coarser, the uniserial interstitial punctures larger but very shallow; prosternum of the male feebly impressed along the middle anteriorly, the coxe separated by much less than half their width, the prosternal surface distinctly though loosely albido-squamulose as usual in the genus. Length (07) 3.15 mm.; - width 1.2 mm. Missouri (St. Louis).............. elongata n. sp. In this genus, as well as Limnobaroides, the female is apparently smaller and rather less elongate than the male. Haplostethops seems to be singularly restricted geographically; I have never seen an example of it taken far from the median section of the Mississippi River, and nearly all my representatives were, in fact, taken very near St. Louis. Idiostethus Csy. In this genus the body is much shorter and relatively stouter than in the preceding, with more prominent humeral callus, subglabrous BARIN-E 499 throughout and without trace of the condensation of white scales broadly along: the sides of the hind body beneath. The male has the prosternum similarly unarmed, except in cases to be mentioned below, but, anteriorly, there is a deep fossa and the prosternal surface is devoid of the conspicuous clothing of pale scales to be noted in Haplostethops; the female seems to be similarly smaller than the male. The genus is widely distributed over the Atlantic states, and the species now at hand may be known as follows: Pronotum coarsely sculptured; prosternum spinose or tuberculate before HAD COLE Opa bees be odio ae cals See a 2 Pronotum finely and in general more densely sculptured, the body very much smaller in size, except in dispersus; prosternum never armed SRAM GEES AUL CAL Cage. een eo PRON PY I Ose SBS S ccs 5,.2) ona debs ads wie laters) Sins» 9 2—Punctures of the strial intervals small though distinct............3 Punctures rather coarse and relatively conspicuous.................. 7 3—Pronotum coarsely punctate, the punctures isolated basally but else- where generally confluent in short longitudinal ruge, especially ORME ECL HE ATG Cle eeeRM NARS ooh facd hoc sd ase 0s soe ole eae eben GB: 5 He SERA Se Baloo ont ot ans ee eee Pe Pe 6 4—Apical tubulation of the prothorax notably long and clearly defined. Body broadly suboval, strongly convex, shining, black throughout and virtually glabrous, the squamules of the elytral series very small and barely discoverable; beak in the female much longer than the head and prothorax, moderately sculptured and arcuate; an- tenne at the middle; prothorax two-thirds wider than long, the sides strongly converging and straight, rounding before the middle to the strongly tubulate apex, which is less than half as wide as the base, the tube between a fifth and sixth as long as the entire pro- notum; punctures isolated basally though generally more or less confluent longitudinally, the median smooth line very narrow but subentire, the scutellum small, emarginate behind; elytra broadly ovoidal and convex, a third longer than wide, much wider than the prothorax and two and one-half times as long; grooves rather coarse; intervals not quite twice as wide as the grooves, the punctures uni- seriate and only moderately separated; under surface strongly punctured, rather densely on the abdomen. Length (@) 3.5 mm.; width 1.75 mm. Pennsylvania (Allegheny),—Hamilton. [Jd. BLEU PLILEL EL SV EAGT | fc teeroe ee dispersus Csy. Size of the body very much smaller, sometimes relatively minute... .10 10—Prothorax more transverse, the sides but feebly converging, very rapidly and strongly rounded anteriorly to the tubulate apex. Body rhombic, convex, rather shining, black throughout, the legs black; squamules above almost wanting but forming evident single interstitial lines, slender and sparse but evident beneath; beak nearly similar in the sexes, rather slender, finely sculptured basally, smoother apically, as long as the head and prothorax (0), distinctly longer (Q), the antenne submedial in both sexes; prothorax three- fifths wider than long, finely, densely rugulose, the smooth line fine but entire; tubulate apex more than half as wide as the base, the constriction deep; elytra obtusely attenuate, with arcuate sides, a third longer than wide, at the very prominent humeri a third wider than the prothorax, nearly three times as long; grooves moderate, impunctate; intervals three times as wide as the grooves, each with a single series of small but distinct and widely separated punctures. Length (o' 9) 2.3-2.6 mm.; width 1.15-1.2 mm. Kentucky. Pouriexam plese waevacm sites ores co Ae ecole aciepaeee humeralis n. sp. Prothorax smaller, the sides more converging from the base, only slightly rounded anterionlysas avcules.. .. ... 2 oh. ols. oe eee II 11—Elytra only slightly elongate in either sex and with notably promi- nent (hummerics . joerc = bats cs «0 < Sale enctete Renee osteo eee 12 Elytra: distinctly elongates: 20)... 3's 5s. so ee oe oe eevee oe cleo ei eee 14 12—Body very small in size. Form subrhomboidal, convex, rather shining, black throughout; squamules almost wanting above, very minute, sparse and slender beneath; beak in the male unusually slender, feebly arcuate, densely sculptured and distinctly longer than the head and prothorax, the antenne at four-sevenths; prothorax BARIN-E 503 less than one-half wider than long, the converging sides straight, rapidly and strongly rounding anteriorly, but for only a very short distance, to the tubulate apex, which is half as wide as the base; surface finely, densely rugulose; smooth line distinct only toward base: elytra but little over a fourth longer than wide, the sides feebly converging in basal, more rapidly oblique and rounded in apical, half, a third wider than the prothorax and rather less than two and one-half times as long; strie fine, about a fourth as wide as the intervals, the single series composed of minute and widely separated punctures. Length (o’) 1.8 mm., width 0.85 mm. Pennsylvania. A single typical example........... subcalvus Lec. Body less minute, convex and very much stouter in form, the humeri similarly prominent; fine darkish squamules above minute and very inconspicuous, more evident and whiter beneath........... 13 13—Form subrhombic, very stout and convex, shining, black, the legs black; beak in the female rather long, feebly arcuate, distinctly sculptured and very much longer than the head and prothorax, the antennz at about the middle; prothorax conical, scarcely one-half wider than long, the strongly converging sides very feebly, subevenly arcuate throughout, the constriction not deep, the subtubulate apex half as wide as the base; surface finely, densely rugulose, the smooth line narrow, distinct only toward base; elytra a fourth longer than wide, a third wider than the prothorax and more than two and one- half times as long, the sides behind the prominent humeri parallel and straight, rounding and oblique in apical half to the narrowly rounded apex; striz moderate; intervals three times as wide as the strize, with single series of fine and distant punctures. Length (2) 2.15 mm.; width 1.15 mm. Missouri (locality unrecorded). nanulus n. sp. Born very broadly oval, convex, black and shining, the legs black; beak moderately thick, evenly, very feebly arcuate, distinctly longer than the head and prothorax and strongly sculptured; antenne at four- sevenths; prothorax nearly as in the preceding but more transverse and with more strongly converging sides, notably arcuate only for a very short distance at the tubulate apex, which is more than half as wide as the base, two-thirds wider than long, very densely rugu- lose, the fine smooth line traceable only basally; elytra broader, barely a fifth longer than wide, subelliptic, with narrowly rounded apex, a fourth wider than the prothorax and two and one-half times as long; striae moderate; intervals between three and four times as wide as the grooves, the punctures fine and distant, forming rather less regular single series than usual. Length (01) 2.25 mm.; width 1.2mm. Kentucky. One example............ brevipennis n. sp. 14—Fine and suberect, setiform squamules of the elytra forming even single lines and very distinct. Body fusiform, narrowly rounded behind, convex, moderately shining, black, the legs partially piceous; squamules on the pronotum more evident in a small spot at the basal lobe, inconspicuous beneath; beak in the male slender, sculptured, evenly and feebly arcuate and evidently longer than the head and prothorax, the antenne at four-sevenths; prothorax not quite one- 504 MEMOIRS ON THE COLEOPTERA half wider than long, subconical, the converging straight sides becoming broadly arcuate anteriorly, the tubulate apex half as wide as the base, the surface densely rugulose, the narrow smooth line obliterated anteriorly; elytra two-fifths longer than wide, the oblique sides evenly and rather strongly arcuate from the very moderate humeral prominences to the somewhat acute apex, nearly a third wider than the prothorax and between two and three times as long; striz deep; intervals rather less than three times as wide as the grooves, the punctures small, widely spaced in single series, more close-set on the second and third, confused on the fifth basally; squamules beneath denser on the last three abdominal segments. Length (7) 2.3 mm.; width 1.15 mm. Missouri,—Schuster. ~ densicollis n..sp. Fine squamules above indistinct or very inconspicuous throughout.. .15 15—Form somewhat as in the preceding but narrower, the sides of the elytra subevenly oblique but less arcuate, with the apex similarly narrowly subogival; color black, somewhat shining, the legs black; beak in the female slender, nearly smooth distally, evenly and feebly arcuate and distinctly longer than the head and prothorax, the an- tennz at the middle; prothorax short, three-fifths wider than long, trapezoidal, the strongly converging sides nearly straight to the fine strong apical constriction, the apex more than half as wide as the base; surface with dense but relatively not very fine rugulosity, the median smooth line obsolete; elytra three-sevenths longer than wide, scarcely a fourth wider than the prothorax and between two and three times as long; sides subparallel and nearly straight, oblique and rounded in apical half, the humeral callus feebler than usual in this section; striae moderate; intervals between three and four times as wide as the strie, each with a single remotely spaced series of very small punctures. Length (2) 1.7 mm.; width 0.78 mm. Indiana. Levette collection...................... minutus n. sp. Form stouter, the sides of the elytra less oblique, more feebly, subevenly arcuate, the apex much more obtuse than in either of the two pre- ceding; color black, rather shining, the pronotum and under surface densely sculptured and dull; beak in the female slender, only just visibly arcuate, nearly smooth distally, about as long as the head and prothorax, the antenne barely perceptibly beyond the middle; prothorax small, conical, with broadly arcuate, basally straighter sides, scarcely one-half wider than long, the subtubulate apex fully half as wide as the base; surface finely, very densely rugose, the median smooth line wholly obliterated; elytra two-fifths longer than wide, at the very prominent humeri fully two-fifths wider than the prothorax, nearly three times as long; striz moderate; intervals about three times as wide as the grooves, each with a single series of small and well separated punctures. Length (Q) 2.5 mm.; width 1.2mm. Indiana. Levette collection........... parvicollis n. sp. The strigapunctus, of Hamilton, I find from a typical specimen sent by the author, is none other than the true tubulatus of Say. BARIN-E 505 The tubulation in the allied species, hitherto associated with it, is so brief, that it certainly would not have been made the basis for the very appropriate specific name given by Say. The short spines and acute tubercles that appear on the proster- num before the coxz in the larger and stout, coarsely sculptured species of the twbulatus type, were overlooked by me in my revision, as stated by Blatchley; they do not appear, however, in the minute forms allied to subcaluus, or in dispersus, and it is interesting to note in the latter, the peculiar and extremely dense vestiture at the sides of the under surface, characterizing Haplostethops and Limno- baris, but here it is confined to the last three segments of the abdomen. In the minute densicollis it also appears, but in a looser or less compact and more erect form; there seems to be no trace of it in any other of the minute species, or in any of the larger forms allied to tubulatus. The female appears to be smaller than the male throughout the genus, less stout and sometimes with relatively shorter beak, as is the case in the preceding genus, as well as Limnobaroides; this is a rather singular character to be encountered in the Barinz, which however, constitute a group of the Coleoptera characterized by inconsistencies of all sorts. Stethobaris Lec. The eastern smooth species of this genus can be assigned to two well defined sections, one having the prothorax shouldered, that is with feebly converging sides from the base, becoming broadly and strongly rounded anteriorly, and the other having a more conical form of this part, the sides more strongly converging from the base, and feebly and not at all abruptly, if at all, more rounded anteriorly. The language of LeConte (Proc. Am. Phil. Soc., XV, p. 302) ‘‘pro- thorax rapidly narrowed in front, very strongly and tubularly constricted near the tip,”’ shows that the prothorax in ovata has the form of the first section just noted. In regard to the interstitial punctuation of ovata, the wording under the original description is “with rows of small but deep punctures,” and, under the subsequent reference (p. 303), ‘‘the interspaces are narrow, each with a row of fine but distinct punctures.’’ All this seems to show that under my description of ovata (Rev. p. 656), in stating that the inter- 506 MEMOIRS ON THE COLEOPTERA stitial punctures are confused, I have probably given an incorrect identification of ovata, and the name commixta given by Blatchley to my ovata Lec., may be regarded as warranted. But the species described by me under the name congermana, is by no means ovata, as stated by the author quoted, but a distinct and valid species; for the prothorax has a conical form, with the sides scarcely at all more rounded anteriorly, and the single rows on the strial intervals are composed of punctures so very fine and feeble as to be observable only by careful observation and under rather high magnification, and the language of LeConte quoted above would therefore not apply at all. The Massachusetts type of congermana is a male, and I now have a female of the species, agreeing absolutely in all specific characters, from Buffalo, New York. There is now at hand a specimen taken by Mr. Frost at Hopkinton, Mass., which satisfies all of LeConte’s description of ovata, and I therefore regard it as a typical example of that species; the interstitial punctures are in single rows, and, though small, are deep and distinct, and the sides of the prothorax are broadly and strongly rounded anteriorly and deeply constricted at the notably marked tubulation, which doubtless led LeConte to regard the species as tubulatus Say. In congermana this tubulation is shorter and less conspicuous than in ovata. As Mr. Blatchley states that his commixta is a name given for the Massachusetts species that I had described as ovata Lec., I regard this specimen described by me as properly the type of commixta; it is represented in my collection also from Virginia and the mountains of western North Carolina. The following is another species allied to congermana, in having a subconical prothorax: Stethobaris convergens n. sp.—Stout and very convex, polished, deep black throughout and glabrous; beak in the female thick, evenly and moderately arcuate, shining, though rather strongly, sparsely sculptured and much longer than the head and prothorax, the antenne at the middle; prothorax one-half wider than long, the sides strongly converging, almost evenly and moderately arcuate from base to the apical con- striction, which is tubulate and slightly less than half as wide as the base; punctures strong, separated by about their own diameters, smaller and closer toward the well defined median smooth line, which is entire as usual, close but not in mutual contact on the propleura; basal lobe moderate but rather abrupt and distinct; scutellum small, quadrate, impressed along the middle; elytra large, a fourth longer than wide, very obtusely parabolic, with distinct though obtuse humeral promi- BARINE 507 nences, a fifth wider than the prothorax and two and one-half times as long; grooves deep, rather coarse, with only moderate punctures, not at all crenulate; intervals from less to more than twice as wide as the grooves, the fine punctures distinct, generally rather close-set in single series, but confused along the middle of the second and third, and throughout the width of the fifth toward base; under surface strongly and closely punctured. Length (2) 3.15 mm.; width 1.65 mm. Mis- souri (locality unrecorded). Differs from congermana in its rather larger size and much stouter form, in the slightly longer beak in the female, in the larger and less abbreviated prothorax, much feebler punctures at the bottom of the elytral grooves, and in the distinct and not subobsolete punctures of the strial intervals. The following species belongs to the ovata section, near incompta: Stethobaris collaris n. sp—Stout, oblong-oval and convex, polished, black, the legs and beak piceous; surface glabrous; beak thick, evenly and moderately arcuate, shining, sparsely sculptured and but little longer than the head and prothorax, the antenne submedian; prothorax large, one-half wider than long, the sides subparallel in basal half, broadly and transversely rounding thence to the deep apical constriction, the conspicuously tubulate apex being almost half as wide as the base; punctures very fine and remote, somewhat coarse though separated by nearly twice their diameters laterally, obliquely rugulose on parts of the propleura; smooth median line feebly defined, basal lobe broadly round- ed; elytra broadly oval, barely a fourth longer than wide, distinctly wider than the prothorax but only a little more than twice as long, the humeri obtusely prominent; grooves rather coarse, deep, not at all crenulate, the punctures along the bottom remote and distinct; intervals alternating from two to nearly three times as wide as the grooves, the narrower with single rows, the broader with confused, very fine punctures; under surface coarsely, loosely punctate, the abdomen behind the first segment finely and sparsely. Length (2) 3.0mm.; width 1.5 mm. Florida (Enterprise). One specimen. This species differs from incompta in its larger and less abbrevi- ated prothorax, with much broader apical tubulation, this in that species being very much less than half as wide as the base; in incompta, also, the elytral grooves are crenulate basally. The following belongs to an aberrant group of the genus, peculiar to the Arizona region and with very much coarser sculpture than the eastern species: Stethobaris arizonica n. sp—Oblong-subrhomboidal, black, the legs picescent, the elytra dull rufous, moderately shining, glabrous; beak in the female thick, evenly arcuate, distinctly tapering apically and with coarse close sculpture throughout, about as long as the head and pro- 508 MEMOIRS ON THE COLEOPTERA thorax, the antenne at the middle; prothorax only a third wider than long, the sides evenly converging, evenly and rather strongly arcuate from base to the apical constriction, the tubulate apex a little less than half as wide as the base; punctures coarse, separated by their own diameters, dense laterally, the propleura rugulate; impunctate median line only visible in basal half; elytra three-sevenths longer than wide, a fourth wider than the prothorax and a little more than twice as long, the feebly oblique sides nearly straight to the broad, circularly rounded apex, the humeral prominences large; grooves rather coarse, with small, remote punctures along the bottom, the intervals subequal, only one- half wider than the grooves, each swith a single series of strong and close- set punctures, which are two-fifths as wide as the interval; sterna very coarsely, densely punctate, the abdomen much more finely and loosely. Length (2) 2.65 mm.; width 1.35 mm. Arizona (locality unrecorded but different from that of the type of egregia). One specimen. The type of this species I considered in connection with the type of the larger egregia, in my revision, but it seems to be a different species, differing in its smaller size, smaller and less transverse prothorax, with more evenly arcuate sides and very much less dense punctuation, and with less coarse and more evenly serial interstitial punctures; the metasternal punctures are coarser though equally dense. Cholinobaris n. gen. ; - The body in this genus is strongly remindful of Oomorphidius erasus, being rhomboidal, very convex and smooth, with virtually glabrous integments, but the prothorax is not tubulate at apex above, and the elytral sculpture is quite different. The beak is very thick, with strongly decussate mandibles, the antennal funicle rather compact, the club abrupt but very small, almost circular, its basal joint fully one-half the mass. The anterior coxe are somewhat widely separated and the prosternum unmodified. The prothorax is similarly without basal lobe, but the scutellum is very different, being notably elongate and posteriorly attenuate, though small. The third tarsal joint is rather narrowly dilated but is bilobed, and the tarsal claws seem to be very small and free, though on all except one tarsus of the type specimen, and this partially concealed from view, the claws have been broken away. The type may be described as follows: Cholinobaris rhomboidea n. sp.—Rhomboidal, very convex, moder- ately shining, though alutaceous and glabrous above; under surface smooth and glabrous, excepting the sterna of the hind body and the BARINZE 509 abdomen at base between the coxz, where there are sparse and rather strong punctures, each enclosing a minute scale; beak in the male very thick, cylindric, smooth and rather shining, finely, somewhat closely punctate, evenly, moderately arcuate and nearly as long as the head and prothorax, the antennz at about the middle; prothorax large, almost as long as wide, the sides converging and straight for three-fifths, then rounded, becoming sinuously oblique to the apex, which is half as wide as the base, constricted and tubulate only beneath; base broadly, evenly arcuate from side to side; punctures extremely minute and remote, becoming more visible toward apex; elytra a fourth longer than wide, inflated, with rounded sides near basal fourth, and there a fourth wider than the prothorax, fully three-fourths longer, the sides behind basal fourth oblique and broadly arcuate to the narrowly rounded apex; strjz fine and extremely feeble, almost obliterated, but with very large, widely spaced and conspicuous punctures, the intervals with extremely minute, sparse and confused punctures; male with the abdomen broadly, feebly impressed and strongly punctured at base; tibiz with coarse fulvous decumbent vestiture internally. Length (co) 3.5 mm.; width 2.0 mm. North Carolina (Southern Pines),—Manee. This is one of the remarkable apterous rhomboidal species, such as Oomorphidius and Eisonyx; they are probably the remains of a very ancient fauna, and, at the present time, nearly all that are known constitute monotypic genera. The upper profile of the body, viewed from the side, is strongly and evenly arcuate from front to elytral apex, in this species more strongly so than in Oomorphidius erasus, a specimen of which, from Iowa, is now in my collection. Zygobarella n. gen. In this genus the body is small in size, oval, rather coarsely sculptured and subglabrous, the elytra with remotely scattered linear white scales. In the last-named feature, as well as in the general structure of the beak, mandibles and prosternum, as well as in the connate tarsal claws, it resembles Zygobaris Lec., but in the type of elytral sculpture, form of the distal parts of the antennz and in the much smaller body, it differs conspicuously. The outer part of the antennal funicle does not merge gradually into the out- line of the club as it does in Zygobaris, but the club is abrupt in formation and its basal joint is not a third the total length as in that genus, but fully one-half the mass or only slightly less. The elytral striz are coarser, and are finely to obscurely punctate along the bottom, and not fine, with very large punctures as in Zygobaris; the interstitial sculpture, also, is altogether different. The type 510 MEMOIRS ON THE COLEOPTERA of this genus is Zygobaris xanthoxyli Pierce, and the Mexican Z. tristicula Chmp., also belongs here. Zygobaris nitens Lec., is at present the only species assignable to the true Zygobaris. Neocratus n. gen. The body in this genus is somewhat larger than in Zygobaris, with much larger and longer prothorax and very different sculpture. The beak is long but thick and strongly sculptured, the mandibles similarly decussate, the antennal funicle unmodified apically, the club abrupt, rather small and gradually pointed, with its first joint about half the mass. The prosternum is flat and unmodified, unarmed in the male, the coxze well separated and the tarsal claws approximate, becoming strongly connate basally as in Zygobaris. The scutellum is smooth, obovoidal and strongly rounded at tip. The type is the following: *Neocratus nudus n. sp.—Evenly rhomboid-oval, strongly convex, polished, black and completely glabrous above, the coarse punctures of the under surface—smaller and sparser on the abdomen—each enclosing a very small and slender squamule; the prosternum is clothed with dense elongate ochreous scales; legs, beak and antenne black; beak in the male, thick, feebly tapering, shining though coarsely sculptured throughout, strongly, subevenly arcuate and a little more than half as long as the body, the antenne near four-sevenths, the scape far from attaining the finely faceted eyes; prothorax barely a fourth wider than long, the sides evenly converging and very evenly, moderately arcuate from base to the moderate apical constriction, the subtubulate apex but slightly more than a third as wide as the base, the basal lobe abrupt, moderate in size, with its apex truncate at the scutellum; punctures well separated, fine medially, gradually becoming coarser laterally, forming coarse ruge at the sides and on the propleura; elytra very broad, only a fifth or sixth longer than wide, subtriangular, with evenly arcuate sides and rather narrowly rounded apex, at the prominent humeri distinctly wider than the prothorax and only one-half longer; strie moderately coarse, not very abrupt, finely punctate along the bottom; intervals between two and three times as wide as the strie, not very flat, coarsely, closely and confusedly punctate, less coarsely and more loosely toward the suture; abdomen of the male distinctly impressed medio-basally. Length (o") 4.5 mm.; width 2.35 mm. Mexico (Fron- tera, in Tabasco),—Townsend. Possibly this species may have been described, but I can find nothing resembling it in the work of Mr. Champion. BARIN-E 511 Catapastus Csy. This genus of minute species, allied somewhat closely to the Zygobarid series, proves to have an extended range over the more southern parts of the North American continent. The following three species are to be added in our own fauna: Catapastus simplex n. sp.——Rhomboidal, convex and feebly shining, piceous-black throughout, the legs not paler; upper surface with slender brown decumbent scales, sparse but evident on the pronotum, especially toward the sides, also on the flanks of the elytra, but not medially, the strial punctures each with a very small slender whitish scale; scattered pale scales wholly wanting; beneath, the scales are larger, white and well separated, closer on the met-episterna; beak in the female thick, moderately arcuate, slightly tapering and as long as the head and pro- thorax, sculptured and dullish, finely, sparsely squamulose basally, the antenne at about the middle; prothorax large, two-fifths wider than long, the sides parallel, rapidly rounding and oblique before the middle, the feebly constricted apex more than half as wide as the base; punctures coarse and dense, the median smooth line vestigial and central only; scutellum albido-squamose; elytra two-fifths longer than wide, parabolic, with individually rounded apices and prominent humeri, a fifth wider than the prothorax and slightly more than twice as long; striae moderate; intervals twice as wide as the grooves, with single series of well separated, moderate and subtransverse punctures; under surface strongly and densely punctured throughout. Length (Q) 2.0 mm.; width 0.85 mm. A single example, without locality label, but probably from Florida. When compared with conspersus, this species is much stouter, with larger and more transverse prothorax, sparser interstitial punctures and with completely obsolete scattered pale scales. Catapastus squamirostris n. sp.——Narrowly and feebly rhomboidal, convex, dull black, the legs not definitely paler; upper surface with con- spicuous elongate pale ochreous squamules, sparse but very uniformly distributed on the pronotum and in single close-set conspicuous lines on the strial intervals, more broadly confused toward base on the second and third, without scattered scales; on the under surface large, less yellow, well separated, very dense on the prosternum and finer and rather close on the met-episterna, narrow but distinct on the legs; beak in the male short, barely as long as the prothorax, thick basally, rapidly tapering to the apex, evenly, moderately arcuate, rather closely clothed through- out with conspicuous yellowish scales, the antenne beneath and beyond the middle, rather thick and compact; prothorax only a little wider than long, the moderately converging sides slightly and subevenly arcuate; apex more than half as wide as the base, the basal lobe small but abrupt and strong; punctures coarse, very close and even throughout, without trace of smooth median line; scutellum small, semi-glabrous; elytra two-fifths longer than wide, rapidly subparabolic, somewhat narrowly 512 MEMOIRS ON THE COLEOPTERA rounded at apex, the oblique sides feebly arcuate, a fourth wider than the prothorax and scarcely twice as long; strie moderate, half as wide as the intervals, the punctures of the latter small, rather well separated and unevenly uniserial, confused throughout the broader second and third; male with a feeble rounded medio-basal impression, which is semi-glabrous. Length (o’) 1.85 mm.; widtho.8mm. Texas (Browns- ville), —Wickham. A very distinct and isolated form, easily recognizable by the clearly marked single lines of ochreous scales on the elytra and the conspicuously squamulose beak. Catapastus seriatus n. sp.—Narrowly subrhomboidal, more obtuse behind, feebly shining, black throughout; squamules of the upper surface long, slender, sparse and whitish, evenly distributed on the pro- notum and in single lines on the strial intervals, becoming rapidly and broadly confused only very near the base on the second interspace; scattered scales wanting; under surface with slender and close-set scales, larger and sparser throughout the prosternum; beak in the female moderately thick, feebly tapering, strongly, evenly arcuate, moderately sculptured and a little longer than the head and prothorax, the surface with some fine, sparse squamules basally; antenne inserted beneath and at the middle; prothorax a fourth wider than long, the sides converging and straight, rounding and oblique only in apical fourth, the apex three- fifths as wide as the base; punctures coarse, much less close-set than in the preceding and with a well developed, entire, polished and impunctate median line; scutellum semi-squamose, small; elytra a fourth longer than wide, the sides feebly oblique and rather strongly, subevenly arcuate to the somewhat obtusely rounded apex, the humeri not distinctly tumid, a fifth wider than the prothorax and distinctly more than twice as long; intervals distinctly and uniserially punctate. Length (Q) 1.75 mm.; ~ width 0.75 mm. Texas (Brownsville),—Wickham. One example, as in the preceding. Although this species and the preceding wete taken at the same place and by the same collector, one represented only by the male and the other by the female, and both characterized by somewhat the same unilineate arrangement of the elytral squamules, I have no doubt at all that they represent different species. The form and sculpture of the prothorax differs very much, this being a feature not greatly subject to sexual modification. Of C. albonotatus Linell, I have two specimens, one from Lake Worth, taken by Kinzel, and the other from Eleuthera Island; it is the smallest species known to me, being 1.5 by 0.62 mm. in di- mensions; the basal spots of white scales, from which it derives its name, are minute and rather inconspicuous. BARINAE 513 Barinus Csy. The species of this genus are moderately numerous and were included under Barilepton by LeConte, but the general habitus of the body is very different, lacking the narrow and subcylindric outline of that genus, as well as some of its more distinctive struc- tural characters. The two following species are hitherto unde- scribed: Barinus ferruginosus n. sp.—Oblong and moderately convex, black throughout, the integuments shining where exposed, the upper surface densely clothed with large, oblong, ferruginous scales, abruptly glabrous in a large oval median area on the pronotum; under surface and femora with very minute and slender, sparse squamules, more distinct at the outer sides of the anterior coxe and becoming dense whitish scales on the met-episterna and sides of the last three ventral segments; beak in the female thick, smooth, finely punctulate, strongly arcuate basally, straighter apically, and distinctly shorter than the prothorax, the antenne at the middle subinferiorly; prothorax nearly one-half wider than long, the sides parallel and arcuate, gradually more converging before the middle, the feebly constricted apex fully three-fifths as wide as the base; punctures rather coarse, separated by less than their dia- meters, the median smooth line distinct and entire; scutellum rounded, nude; elytra two-fifths longer than wide, about as wide as the prothorax and two and one-half times as long, the sides parallel, gradually rounding in apical two-fifths to the narrowly obtuse apex, the humeral prominences feeble: strize indicated by clefts in the dense vestiture; abdomen finely, sparsely punctate and polished, more strongly and closely punctate on the first segment; anterior coxe separated by less than half their width. Length (2) 3.0 mm.; width 1.2 mm. Missouri (St. Louis),—Schuster. Related to curticollis but broader, more oblong, with still more transverse and laterally more rounded prothorax and denser and more ferruginous vestiture of the upper surface; it seems to be related also to lutescens Lec. Barinus debilis n. sp.—Oblong, parallel, rather convex and shining, black, the legs piceo-rufous; elongate scales of the upper surface whitish and rather sparse, more distinct, though not denser toward the sides of the pronotum, narrowly and loosely confused on the strial intervals, the squamulation beneath as in the preceding species and curticollis; beak in the male thick, strongly, evenly arcuate, strongly punctate but shining, only about three-fourths as long as the prothorax, the antenne slightly beyond the middle, the funicle and club together about as long as the beak; prothorax a fourth wider than long, the sides nearly straight, subparallel or very feebly diverging, rapidly rounding and oblique in apical third, the feebly constricted apex three-fifths as wide as the base; punctures rather coarse, separated by nearly their diameters, smaller T. L. Casey, Mem. Col. IX, March, 1920, 514 MEMOIRS ON THE COLEOPTERA apically, the smooth line distinct but not quite entire; elytra parallel, with straight sides, rounding at apex, about as wide as the prothorax and slightly more than twice as long, about one-half longer than wide; strie narrow, the intervals fully four times as wide, with fine and loosely confused punctures. Length (co) 2.4mm.; widtho.85 mm. Louisiana. One example. This species also belongs to the cwrticollis section, but is much smaller and with less abbreviated prothorax, apparently somewhat wider before the middle than at base, in its more parallel, more obtusely rounded and more finely striate elytra and in general appearance. Barilepton Lec. The following species is allied somewhat to guadricollis, but differs in the shorter and relatively stouter beak, larger prothorax and more scanty vestiture: Barilepton productum n. sp.—Elongate, parallel, strongly convex and cylindric, moderately shining, deep black, with obscurely rufous legs; squamules above whitish, fine and sparse on the pronotum but closer though not dense along the sides, coarser and forming single or partially double interstitial lines, and more broadly condensed at the base of the second interval and on the third posteriorly; beneath sparse but distinct, white, dense on the met-episterna and close but not very dense almost throughout the last three ventral segments; beak in the male thick, cylindric, finely, sparsely punctate and shining, very strongly arcuate basally, less so apically and distinctly shorter than the prothorax, the antenne slightly beyond the middle; prothorax about as long as wide, the parallel sides feebly arcuate, rounding and oblique in apical two- fifths, the subtubulate apex three-fifths as wide as the base; punctures somewhat small, moderately and unevenly separated, the smooth line distinct but extending only slightly beyond the middle; scutellum tumid, nude; elytra exactly as wide as the prothorax and more than twice as long, with straight, parallel sides, gradually parabolic behind the middle, not quite twice as long as wide; grooves fine but deep, the intervals with uneven series of small and feeble punctures; male abdomen nar- rowly impressed medio-basally and more broadly and feebly at the middle of the last segment. Length (o’) 3.3 mm.; width I.o mm. Louisiana (southern). One example. The rather common eastern species, named quadricollis by LeConte, is very densely clothed above, thus having a widely different appearance from productum. Zaglyptus Lec. In this genus, which includes the most minute of the Barine, the body is rather abbreviated and very convex, with sparse coarse LS es are hl CC CL he lh BARINE 515 recurved hairs and widely scattered long erect setee above, the under surface wholly glabrous. The anterior coxe are widely separated, the prosternum feebly impressed, the third tarsal joint narrow and undilated, the claws slender and free and the antenne slender, with narrow pubescent club, its first joint constituting about half the mass. The species silcatus is very stout, with wide deep, coarsely punctate and sulciform striz; the others are all much less stout and have series of less coarse elytral punctures, the series never more than moderately impressed. LeConte gives the length of the Pennsylvania striatus as 1.8mm. A specimen from District of Columbia, which apparently represents this species, meas- ures 1.65 by 0.7 mm. The following two species are much more minute and may be described as follows: Zaglyptus perminutus n. sp—Smaller and more abbreviated than striatus, convex, shining and castaneous; coarse matted hairs of the pronotum very numerous and conspicuous; beak (co) two-fifths as long as the body, rather slender, very feebly arcuate, with the antenne barely beyond the middle, or (2), nearly half as long as the body, smoother apically, the antenne at about the middle; prothorax fully a third wider than long, coarsely, densely punctate, the sides converging and rather strongly arcuate; scutellum as usual in the genus, minute and obtri- angular, emarginate and sharply bicuspid at apex; elytra barely at all longer than wide, evenly, obtusely semi-elliptic, a fourth wider than the prothorax and twice as long, the serial punctures strong and rather close-set, the series not impressed, except feebly toward the suture, the intervals smooth and virtually impunctate. Length (o7 9) 1.25 mm.; width 0.7 mm. District of Columbia,—Ulke: Three specimens. Nearly similar to striatus, but smaller and with notably shorter prothorax; in striatus the more conical prothorax is but little wider than long in the male. Zaglyptus atomicus n. sp.—Still more abbreviated than in perminutus and more pallid in color; beak in the female nearly as in that species but not quite so long; prothorax shorter, nearly one-half wider than long, the basally subinflated sides more constricted apically, the punc- tures not quite so coarse but still denser; vestiture of coarse hairs sparser and much less conspicuous, not hiding the sculpture; elytra similar in form but not barely twice as long as the prothorax as in perminutus, but distinctly more than twice as long as that part; punctures of the un- impressed striz distinctly coarser and less close-set than in the preceding. Length (9) 1.18 mm.; width 0.65 mm. Mississippi (Vicksburg). One specimen. 516 MEMOIRS ON THE COLEOPTERA Easily distinguishable from perminutus by the shorter, less pubescent and more densely punctate prothorax and coarser, less close-set punctures of the elytral series. I am of the opinion that Eunyssobia Csy. (Euchetes Lec.), sup- pressed by Mr. Champion, is a valid genus; its habitus is quite different from that of Plocamus, as can be seen from the figures, and there are many special differences relating to the beak, pro- thorax and character of the bristling spines. ERRATUM In Memoirs VIII, after Bembidion acutifrons, in the first line of the list at the bottom of page 222, for “ Cal.’’ read Col. INDEX All generic and specific names without designation of authorship in the following index, refer to new descriptions in the preceding pages of this work. Names merely incidentally mentioned are frequently omitted. PAGE PAGE PURERIBEENOTS :. 2,000 save dw ese ores W5G Agontim militares oo... ice epee II4 IBRESRSURSEMUASS coda f= fay fo snp fae Ae weve 457 pieerens Deyo... 6 eee 122, 123 Agonum Bon...... T) 25) Sy OG LOL, LLO molestum Mecsas ces n= ies 112 eruginosum Dej............. 72, 78 PHONG AR eects days ete cl erar< TIL, Dis, 0122 2 cL PS Sem aie ce 116 FUOLOSUMT DOT. ea ets ee ee cone eels 123 SEPIA TEENY = =o) a! ine ois enero 122 mutate Gy Seas oc eee 2s II5 PEPICTUG MOET § oc-d.ssocislanee uueeee ee 89 TIVO VOMIT LD @feiatanet a= ais) sie cre) «rel 104 SERMCERMIER TE am ooh = nfu: 54 c wilaretaene eee 124 octopunctatum Fab........... 102 BRIREIONS sao 2 oe sa says so ee 101 OIG A TO ceacne eh see tous rere ann et 109 PAE RERTCONIS Voc ao ope x turd eine eae 120 PAGO i as ieee eee 102, 109 PRECCAMUN 5 «25 5s as © cle sis eee 124 Palate ear ars as seer cys 73 GEC AUINUII oe es see se oe ae eins 109 Parallelittan <5 cts eus esis ste 108 ibtevicolle Dej..... 0. ...u005005 120 Persinaxs cee apes 119, 122 FISMUSCUNUIA ss. wee cre 119 pice eee i ni: ate TE, 122 EEA ST GLE Rg cP Se 121 picipenne Kirby... 6. - ens 127 cicatricosum Mots............ 93 placidum Say......... 99, 123, 125 CEUTA S Sees oh ater ttre 124 punctiforme Say... 5-00. 9. «n& 74 COAT SA VY c)cus Socios tie wietetemea cae 124 quadripunctatum Dej......... 95 ROMMIDICUIN. o's 5. oes ge es 121 FENOLCHEM s rosiainas eas eine esate ae III crassicolle\Lec.. .f..02...:. 107, 110 HibApes: WEIS: wns se yop recs 74 GUpreumM Dej.e cea. a 104, 109 seminitidum Kirby........... 108 cupripenne Say....... 99, IOI, 104 SCUUOIANUM) tein re eyo iy seat 105 IC ISRIGED crete fess iets oyeraie nek recess 118 Saaehabbislas.oc wiaaoe noo ye wOn 105 deplanatum Mén.......... 106, 110 striatopunctatum Dej......... 88 ESEATIIE OE UFa 35l cy chara cos alles asl nce eos 125 GOEL cecum Seg US On OA Il7 ergenropus, Kirby... 0.5.66 <5. 125 QUE hae pote gegen Sate Aare e 104 EISEN etar (eos ie ns recon fevete 6 os 109 SioEWgNeb nna coneeeomoreeoM 107 Sexcavatitn Deje. dw... ees ee 53 fALOEUSEY stacer etee ete ie cance 106 PoE MC OM IVLEN. occ. gees ea 120 LEmMNegeec rca mnteetoe obeys crabs tee I14 ferreum Hald umd al Wms is. eee ee = Par, £22 GGG. cet coos) See oes {RREANAMILIDS oy Corgan Cts Soto 104 fossigerum: Dej. MEPBUN late Were cls 20, 122 POMEMOUU Bete isieis soc ct wisn ae act VARECUSSEDA UII racers te iste eye sa 5 oes 103 guadalupense Amare tala lecseaeres atic saa 200 Mathis eGnae sh eie aie em yi hesperia @syeaesci-- e+. 200 BYUIIOHE aiate etre tats Seis veers acts tears ANA CCULEMS apaie oataraiscy ara) cere srepsh=tnre 463 PEROASILED ED Liste era? as ise oe: suche cegmay tor CE nye 4 BIS ULISIS uptas auc 0.0 Gua CEEETERO 469 SHAS CLO el ee tote tohercisi=. ciantel orareciewey Pypya qn Clot mectrunnitenccocancban Oe 468 HAC TISLL Gircsahal's Yate crak eles ere, cate DLACAtNSy CSV wre ielsuers eaedes ers 464 APAIB CUTIE .- eee 56 brunneomarginatus Mann....41, 44 ontarionis. 2. 4 2 <2)c-:ee een 54 calitormicus Deyo. oa). -1.cse 61, 69 opacellus |. ....2 2 3a 50 cincticollis Say............. 39, 44 opaculusWec.. <3. «serine 44 clientnluss... sn kee 55 opacus Mots... .... - =. eee 47 G@OlISUS: ay-rey-raiee oie eno eee 59 ovipennis Mann............-. 34 CONCISUS Bates eteres-tse eee 43 pacatus. 2352. +0 pee 43 CONCUTKENSS...e -t-icie a euenee 49 parmarginatus Ham........... 37 GOUT. a5 5 G6 cbc aoaseacesn BS PaTVUS.... > <)2.-.c/= © = allheleesenenee 5r COMVEXULUS ects eee etdels alee 38 pennsylvanicus............. 40, 44 (COLA CINUS eC emitters 31 pinalicus: 5.2.22 eee 42 QOPI sonascecen geass oase 51 quadratus Lec........... 2220. 50 COLVINUS LOE] pee ae 39 quadrimaculatus Horn........ 71 CULEIDCNUIS = ear eereie 22, 26, 27 reflexus, Lec:.......:.'2 see 23, 38 cyanescens Mots.............. 57 FeNOaNUS. «52 voc | yee 51 GECENS Sa Vireo nites see reise eae ai rugulifer. .: .... «+... -» =e 33 GeCOnUSt Say. nmaricn arts rtierer 68 simntlatus«. 2). 4342 ae 35 deplanatus Chd............ 40, I10 Sinuatus Dej.. .- . .. = eee 4, 22 Gepressus! lal dim cr. seen nie oases 32 SOLNGUS 3-5 ee o> eee 60 dilleyaniis: jc strtae piteo - one tee 52 striatus Dej:.< 5... 20 GISSeNSHS G4. 2 oer ie cas 67 stygicus Lec... :.; ...:.. see 36, 44 GISLIGPTENGUS. «mie wele Sera de 40 sulcatus Dej......-- 2 eee 4, 20 GIStrictus = sce eceis a= 22, 23, 24 tepidus:... .:...- (<<. =) 68 dulcisp atin ae cers eerriers 223 TEXSUS «<0 2 5 vie ec vie ple 35 elongatulus Dej..........-.... 56, 69 texanus' Lec... .))-0< iene 58, 60 erasusvlec..lekicws ae ce eee 62 thoracicus Dej.. ... ...«.. 0.25 excavatlsuDeyiaa- ts sie as 45, 53 trifoveolatus Beut......... Wee extensicollis Say............ 57, 69 trinarius: ..-02 2.j.-¢ eee 54 ferruginosus Dej.........-...- 65 EQLEWS << oe: cis costs as Geer 63 Horidanusi2ecrsamn ire 58, 69 turbidus. . -- :.. <). =: see 32 fractus certs ivocisn tee teers 63 Vigilans. 05 on. © fs once ee 56 frisicalusie ec csi ee ee 66 VINDU1US. .... << nies 61 funebris Lec..........«..-. 22, 45, 47 viridis Lec. 0)... . -|- 5) oe 57 Papates:Dejin. =: 55 .c 00ers eee 31 Wadel'- 005.14, .si os 62 SAUGENS s,s) wir Sete 55, Anchusi) Lec. -). .. -.-s ae eee 2, 75 gtavidulus.).05 57 -e cee 59 puncticeps. . ..... .«%). =: see 2,3 guerrerensis............. 2227.28 pusullus Lec’... ws ase 2, 3. 72 Iharford iii: scletsys sense ements 42 Anomoglossus Chd.........-.-.-++ 2098 TMPICbUS). cece w sie cee eee 60 gravis Csy..... 1... ..5 oe 209 INE PUUSEieccceseqeve aie Ae ceelee Cnet 63 SEMOLUS: co ode ose ei 2909 bebt (GU Gee GOALS oie 8G SOG 26 Anophthalmus Stm............--- 6 TMQUISILOKs sehen he eyerines eens 30, 44 Aphelogenia Chd.............. 239, 252 IOWANUS cic a mle on cereale erates 32) Atpristus Cid. 1-yerte eee 268, 271 ANTUPELS) a. cle ters a Nexen eaieeeyen 60 ACtUOSUS*. «cv «nes Rela entero 274 JASCIVUS es fete sin etate statement tat 66 ABIEALUS.. 0.65 veo es hin ee eee 276 INDEX 519 Mupristus cephalus... ........60.00% ame VARINA yess, cie/ dian whe 316 MART meACU CULE =,

2. eeeee 176 DEES lath ve je xsnaceis cps c eee 330 fuchsianus Riv... .. 4.) Seen Planiferary s< a+. si. «cracs ere e eens 328 gentilis'@sy.. 0. = ls eee 177 probatars «oct a7 oe eRe eee 340 gracilis'Geh>. -... J... -soeeee 181, 182 DROLU GA rss 6 ces ano oe ete 314 insularis'Csy.......... 3) e oe PUP lay. of - 5c Aye ee ee 336 integer (€syi-./5) 5.0 eee 178, 179 quadrata Leeyc 2. en cee eee 300 interruptus Mén.............. 176 Repilarisn@ bron. statins 330 lativentris Mots........... 175, 178 TELQUSA cies aie ere se ee 3II manni) Wick, . 3. . = s-eeeeeee 180 OSGI ets neat -htey see ee 332 marginatus Pisch:. .)25ee=mee 181 TUbLIpEs Csyee st. ot eee 326 monutanicus. . 1 4e)ee eee 182 MLISEICU Lal wycre cave state ne ae eee 339 montereyensis. ....:.... sess 177 Satellest pia. \ «5 cen eee 304 OFegORUS:. .- =.= -o 4s = 182 Sculptiventris: .<. o. el te 220 OL Uata OLiveaer ieee earners 384 behrensi Mann...........- 212, 216 CLAVE Charest ses ee ans ee eee 327 beringi..). J .6...c ae eee 218, 219 transversa Say...300, 301, 302, 305 Calatorc. 20:0. 5d .0 220 MUCK Ena ae ox nectar. Se eS 305 confusus Lec:... =: /... $2 eee 2190 PUMeSceNS IeCs:).. ce ey sree 320 grandicollis...... 215 UTICA ree ate eve) a tenes see eye eee 307 guadalupensis Csy 214 umbilicata Lec............ 307, 308 ignicollis. .-..2 =...<0) 4.3 213 EEVABANS was. cs ters aris evens Sa 318 incommodus Mann........... 212 VUE EULA ie cine, Ale See 323 ineratus Dej;; - .\-..1-15....) eee 407 hypolithus! Say... stone ere 4 gravidula., .........-0...5eee 497 MAME SER oon cos anasujcc 4, 82, 84 Marginata. . 06.22... 498 DlacidasSaiy.5 Ae. mse: agetctast eae 123 scaphinella..... ..+5 == eee 498 UN CEIPOL NAS Say ore et ie ease 4 Harpalus bogemanni Gyll.......... 93 scutellaris;Say... 2.5.) . 2 eem bs i122: Hemiplatynus<. -.).-:- ae 4, 15; 16 Galenitaybab segs a cctrutesmter ree 225 chihuahue Bates........... 15, 16 ameticana Hab: 22... ss se20 umbripennis, <<. eee I5 rhastelaterchale DIc\ pena ae © soe Se C5 230 MHesperobaris ovulum.............. 373 AUSUSECEDS! «ive aye eereaes 22 suavis' Csy....: 0. see 373, 374 ARIZOMICA Ce sie a =o nee ee 231 Hypherpes lassulus............... 186 zi wat ool Li enegeng SIMO OesOn sa: 4- 232 pergracilis:.. .... 52). -Sthe eee 187 DICOLOL MDT tayz-e eel eee 230, 234 Spissitarsis ‘Csy:... - -).\-))e teen borealis (Gast... ; 5). «Jee 230 sufflatus:.....<....2420e eee 187 californica Mann............- 231 tarsalis Lec... «. 1. eee 186 caseyillbeng.. ccrsscrs noi 228, 234 zephyrus'Csy......... -- 3) 188 (Soycab Olli (lGlog oa scncnagesoce 228 Idiostethus' Csy.._--- - -eeee 496, 498 CHITIGORILUS hte) 03) eee 220 brevipennis..: ..... 2. .-c eee 503 Gy anipennis Oey- er ete eee 228 densicollis .....\°:.-; 30 ote 504 Gecipiens! Worn. eam eter 232 dispersis Csy.5. -. 3. eee 502, 505 Gubia beer i eee 220 ellipsoideus Csy....... Biot oas 496 erythrodera Brul..........110, 233 humeralis:: - =... eee 502 Haber) (Cohen egoosooncuso cos 231 illustris.......: i <. «.0)s- ne 501 qusularisn astern sere 233 minutus’... . .c. .f:- seen 504 Intermedia Csyere.-eca aeeeee 227 nanulug: /., «0 ......060 8 eee 503 TOWENSISS c:siasoniveceds Gite ees a eS 230 ovulatus..,..:...:. .20..45eeeeeeee 501 LAIGIEE ES osnacnaeapaobesoos 228 parvicollisey. (cr <7 en ee 504 lecontelDey. ns ae cenc kee een 2290 proximus. ..:.. |... -2 eee 500 longicollisi@ hain ere aescneet 230 puncticollis..... 2... eee 500 MAA EMO) goccchsanosoorsacs 232 rugicollis...\..... cle 501 isle nOMGhs eucogococorsacs 232 Spiniger.....0. 25... -1: eee 500 mustelina Bates.............-. 233 strigapunctus Ham........ 499, 504 obliquaiG@sy- jn. seis 230, 234 strigosicollis. <<. =~ - <1 seeeee 500 OCCIPILAlIShe eee ieee tee 228 subcalvus, Lec. <. =. - = .ciee 503, 505 PAUAMIENSISHy-n tty kee reese 233, 234 tubulatus Say... ts ee 499, 504 THOMBIGE DS) eee et eae 230 “richroa: Newm... -....\- =~... eee RU COMIS HOS eset eens 233, 234 amplicollis.\..... =<... 174 thoracica Chev.......110, 228, 234 germari Ghd... .-. 2 nee 173 EhoracicadSyans a errant 228 imegularis)Beut:. ...- oe ee 174 Gereopsisticie cist een sic 380 leonardi Har.-..: .:. oes 174 (GereisiPascimcr ects aaa 386 longicollis... ..2\. =<... o¢ «<1 Gea ’ arcuatirostris Chmp........... 3890 modulata...: ..3.,. 1%. eee 140 eschscholtzi Mén.............. 153 simulator Fall............. I40, I41 formalis: s,2 2. $<22 45 o eh oee ee 153 . Odontocorynus Schon... .....22225 412 labradoricaie «cc: - 2.46 15 427 tramsversa......... Pi ccht ae 152 creperus Boh... =... sees 434, 436 VIKeScens) HOLM) el ieee 149 cribrum::.2 3.3.1. 25.0.0. eee 431 INGOcratisec.c 0 tas aiva sts een eee 510 dakotanus: ..:...2.5:5000eeee 419 MUGS 9.356 ork ae cece ee ees 510 dallasianus.... <<: ==). = eee 431 Wicentrites! 0.22. 842 2:5 Soe 457 defectus: -).../2: .).. Se see 428, 432 hidalgqanusn. 37 Mes ere 458 densissimus. ...¢ c= -)-t) eee 419 Nicentris!Csyae emi rater eee eee 444 denticomis'€sy-0- == eee 423 alabamice: .'3).. ance. tee ee 455 divisus:. ...... 5. ..:52 oon 415 chihtiahucerss cin css ee eens 453 fultoni. . 5.0522. 32 .on ae eee 416 CONMELACCUS! CSy ae stad ata ster 445 greeleyi. ....%..0.. eee eee 420 GQonvadiiteesccnuoqcacans 448, 456 histriculus ...< ........2 aoe 433 eylindracollis®: Fes. 2 caetemtar 450 IGNOEUS: <.. 6.26 2 sede Se 430 decipiens Lec......-.......... 445 Ming 2 oo. 52 Saye ue 2. 416 effetiis: Csys. <-.n< ee eee 451 INGeLtUSs ..:- 0s. see eee A416 grossulus) SVs. ceaic ye te 444 inflaticollis........ 02... see 425 FBPCOUUS CS Ven eee ene 447, 456 INSPECEUS =. .5)-) 1,-0.2) = 421 leconter! Chimps. ont eeie 454, 456 joweusis’ . 2 <.t:..0.:.2 5) 428, 432 lineicollis Boh........ 448, 454, 456 larvatus Boh... ....>:saeeeee 432 Mie Goss Goo ahonwoebhe suc 450 latiscapus Chimp... .02)- see 433 neglects! Blat: oni tiie 456 Jatisculus®- <5. =... ost ennene 425 OFdinatustesi.i eee 448, 456 limatulus: Jit. 4 ee 433, 434 OVUabISS a5 2 aoe eee 448 lineatellis <.. .0..0%,-1. 1.05) eee 413 parallelasy: 2:2 a) ace tee ae 445 longicollis....... ¢..~- «> eee 430 DATEUSIS S foc). setra le cee eres 451 lulingensis=..c.4..:.:2 sts eee 422 pertenwiss <5. 222d on prea ertr 454 missourianusS. .-2:< 6 2c eee 423 Picelpes:. -.5 = sins Ree Seer ee 455 echreosus:.. 25.0 sic tee 419, 433 pistorinus:...../.gecnee ei erent 451 onagensis. ....6.%%,.05 av eee 431 DUTItANUS he cee ote ee ere 453 parallelus:’. 2205-25. +2 eee 428 TUDRAUPeS -.2 2 cscs sy adintee pattern 449 DALVUS! aoe. ac eee ale 432 SCitulusy.. <) Sic acee ro 452 peniianus.... 3... <5 5-5-5, 432 SUITUIATIS ee eee Reese tere 449 pinguescens Csy........-..... 424 striatopunctatus.......... 446, 456 PrOMINENS © 4.406 s:eaye se see 370 DiCEUSHLEC! is ate ene 117, 122 Pseudocentrinus ochraceus Chmp... .443 PIceus!DeE|. 26-2 lec. sahye elon eee I22 uniformis,. ...5. 27. «eee 443 picticornis Newm............. 89 Pseudogerzeus championi.......... 442 propinquus G. & H........ Tule, aie macropterus Chmp............ 442 protractusWlecl.. aan eerie 108 Pseudomorpha Kirby............. 5 PLONILOUIS Elan cere eee eee 56 Pseudonomaretus manni Wick...... 180 punctiformis Say........ 692772; 73 “Pycnobarisi€sy-. .-. 2s 342, 345, 346 quadrimaculatus Horn........ 3, 70 CANONICA’: 5... ee 345 Tetractis Lec... Sse) ore n28 Pycnogereus. .. 2...) assets 389 robustus Mots... 1-< ..he ene 720, . Rhadine Lec... ....<225- eer eee 2: A, 9, EE HUbMpes!Zimimne. eee eee 69, 74 anthicoides Csy............... 15 MUM COLMISHGEG eres en ener ere 130 gracilenta Csy... 2 << ii