?f III. — Goleopterological Notices. V. BY THOS. L^ CASEY. Read Oct. 2, 1893. In bringing together a number of short studies of our IS'orth American Coleoptera under the above title, the methods and objects held in view in the other parts of the present series are continued. The systematic revisions do not pretend to approach completeness, and are merely efforts to indicate the projjable interrelationships of the species, based upon such material as it has been found possible to gather together. New forms are continually being brought to light, which sometimes tend to alter previously formed conceptions of specific limits, or to destroy or modify the value of characters assumed as the bases and criteria of classification. This is the natural outcome of all endeavors to evolve the laws of complicated affinities from inadequate data, but, at the same time, it is not always necessary or advisable to defer the announcement of such apparent truths as we have been able to discover with the material at our disposal ; if carefully conducted, I believe that they may, and generally do, lead onward and upward. Having before us a confused mass of material which it is proposed to classify and arrange generically and specifically, the problem is to record all the genera and species, but neither more nor less. This problem is frequently more difficult than any which can confront us in the domain of the exact or physical sciences, because the acci- dental and variable factors cannot be determined. We might illus- trate the process by imagining an exact circle finely drawn on paper, and then trying by free hand to retrace it with a blacker pencil. It will be found that a portion of the dark line is outside the circle, a portion within, and another truly on the line. The portion without represents an excess of units or species, that within those which we have overlooked, as shown by subsequent and fuller evidence. The Annals N. Y. Acad. Sci., VII, Oct. 1893.— 19 282 Cohopterological Notices, V. hand cannot follow the circle exactly, and in like manner is it im- possible for the human brain to correctly interpret nature; we can only approximate. It would of course be perfectly eas}^ to strike a circle wholly within the circumference of fact, but this would be analogous to the rule of thumb by which an engineer may make a structure many times too stropg, in order to avoid laborious calcula- tions. It may answer in a certain way, but is not in the spirit of true scientific inquiry. New York, Sept. 7, 1893. STAPHYLIXIDJE. Aleocharini. It is unfortunate, having in view the optical means of investiga- tion usually employed, that the Aleocharini are so small in size, for, from all points of view taxonomic and etiologic, they are one of the most interesting groups of little animals on the earth. The extra- ordinary diversity of structure and specialization of type observable among the termitophilous inquilines, are, in a measure, characteristic of the entire tribe, and it is this diversity alone which has given rise to the multitude of generic names which have been proposed. It is impossible to estimate just what proportion of these names is really necessary, but the number of true genera is without doubt proportionally much greater than in any other tribe of Staphylin- idse, possibly excepting the Omalini. This diversity and specializa- tion bespeaks a greater geological antiquity for the Aleocharini than for the other tribes of Staphylinidae, and this is indicated again by the fact that nearly all the associates of the termites, — known to be more ancient than the Coleoptera, — are taken from the tribe under consideration, or the closely related Tachyporini. The study of the subarctic Aleocharini of North America has been almost completely neglected thus far, but the species are with- out much doubt as plentiful here as in any other part of the world, and seem to follow the general rule with regard to the Staphj^linidae in being more abundant and diversified than in Europe. This is somewhat remarkable, in view of the superior development in that continent of several other large families of Coleoptera, and, as I have before suggested (Col. Not. II, p. 326), seems to point to a Coleopterological Notices, V. 283 greater age for the Staphylinidae than for some other families of Coleoptera. The following detached studies are merely intended as a begin- ning, and in drawing up the generic diagnoses, I have employed to some extent the differential characters suggested by Rey in the "Brevipennes" of France; so that one familiar with that work can refer the genera to their most probable positions in the European scheme. It is to be regretted, on the score of simplicity, that it has been found necessary to propose so many new genera, but I feel quite sure that those here described are really essential. In fact several species now referred to Leptusa, Oxypoda and Rheochara, will ultimately have to form distinct genera. This matter of generic subdivision is, however, becoming an important one from the mere standpoint of numbers, and, in the Aleocharini, if we go beyond Aleochara, Myrmedonia, Bolitochara and others, as determined by the number of tarsal and antennal joints, it is difficult to tell just where to draw the line. One good rule to follow in such cases, is to avoid defining new genera unless there be at least three or four important structural differences; facies, however, here as elsewhere, frequently goes far as a guide, and is much more important than any single organic structural peculiarity. There is one important point concerning the nomenclature of the Aleocharini, which should be continually borne in mind. Homalota Mann, was founded upon a single definitely stated species, the Aleochara plana of Gyllenhall, which was subsequently found by Rey to have but four intermediate tarsal joints. This necessitates the complete abandonment of all our old ideas of Homalota as ex- tended by Erichson, and the true and only Homalota is the genus named Epipeda by Rey. In future, therefore, when we think of the Erichsonian Homalota, we should have in mind Atheta, Colpo- dota, Amischa, Liogluta and a score or so of other genera.' When 1 This is set forth with sufficient clearness in the recent catalogue of Heyden, Reitter and Weise. I cannot agree with the authors of that work, liowever, in changing certain family names by reason of the rehabilitation of Geoff roy's genera. For instance, under Mylabris, Geoff., p. 331, I am unable to find a single species named by Geoffroy. Genera are and must be founded upon species, and if no species were described by Geoffioy under Latin names, it follows that that author had not adopted a proper binomial nomenclature when he founded his genera. We are compelled to assume some definite beginning, and that beginning is the date when tlie names of species were first published under the true binomial form. It is possible that some genera 284 Goleopterological Notices, V. there is the least doubt, a name long established in connection with certain species should not be changed, but in a case of this kind, where there can be no doubt whatever, the sooner we overcome our conservatism and adopt what is manifestly proper and right, the easier it will be for the generations of systematists who are to come into the world during the next few hundreds or thousands of 3''ears. It is our duty to lay as immovable a foundation as possible in the nomenclature of all sciences. The time, be it greater or less, during which we have become accustomed to a certain status or condition, will count as a mere nothing in future ages. Aleocharides. Antennae 11 -jointed ; tarsi 5-5-5-jointed. ]fIASEOCHARA Sharp. Of this interesting genus we have four species. First, a large form with red elytra, which is without much doubt semivelutina Solsky ; second, a similar species, having the base of the prothorax equally rounded with the sides, but with the elytra black, described by LeCoute under the name valida (= califnrnica Csy.). Third, a rather smaller and notably more slender species with black elytra, having the basal angles of the prothorax distinct, recenth^ made known by i)r. Sharp under the name ojmcella, and fourth, the fol- lowing very small species allied to gracilis Shp. TH. pillierula n. sp. — Black, each elytron feebly suffused with rufo- piceous toward — but not attaining — the suture ; legs throughout and antennse toward base dark rufo-piceous ; integuments alutaceous, the elytra rather more shining, the abdomen strongly shining ; head and pronotum feebly and sparsely punctate, the elytra more closely and a little more distinctly, the abdomen rather strongly but not densely, the impressed basal areas impunc- tate ; pubescence rather long, coarse and plentiful, conspicuous, though much less soon the abdomen. Head orbicular, rather longer than wide, the eyes at fully their own length from the base; antennae fully as long as the head and prothorax, feebly incrassate, second and third joints equal, tenth one- half wider than long. Prothorax one-fourth to one-third wider than long ; sides parallel, broadly, evenly arcuate ; basal angles obtuse but very distinct, founded upon uudescribed species may have been more recently accepted, but this would scarcely be a case in point, since the adoption of them took place long after the binomial system was firmly established. To establish a system is quite another matter, and requires the rigorous fulfillment of certain condi- tions. Coleopterological Notices, V. 285 scarcely blunt ; base broadly arcuate, slightly wider than the truncate apex ; disk very obsoletely impressed along the median line throughout. Elytra, strongly transverse, at base subequal to the prothorax, but, at apex, quite distinctly wider ; sides feebly divergent from the base, broadly arcuate ; disk externally scarcely as long as the prothorax, the suture much shorter than the median line of the latter, broadly, feebly depressed toward the suture ; humeri broadly rounded to the base of the prothorax. Abdomen one-half longer than, the anterior parts, about equal in width to the elytra; sides parallel, feebly convergent toward apex ; first two tergites strongly, widely impressed at base, the third very feebly so; fifth just visibly longer than the fourth. Basal joint of the hind tarsi one-third longer than the second ; two to four exactly equal ; fifth a little longer than the preceding two together. Length 4.0-5.0 mm. ; width 0.85-1.25 mm. Arizona (Benson). The male above described, has six small slender teeth along the apex of the sixth tergite, but instead of being disposed in two sets of three, with a wider interval in the middle as ia the other species, they are here equidistant. The coloration seems to be constant, and the largest and smallest specimens in my series are both females. The rufous cloud on each elytron is extremely feeble. BARYOD9IA Thorns. B. SCUlptiTentris n. sp. — Rather narrow, parallel, convex, black, a narrow apical margin of the elytra almost imperceptibly rufeseent ; legs scarcely paler, the tibiae and tarsi dark piceo-rufous ; basal joint of the antennae pieeous ; integuments moderately shining, the abdomen polished ; head coarsely and rather closely punctate, the pronotum very finely but deeply, extremely densely and evenly so ; elytra more distinctly biit still rather finely, very densely and subasperately so ; abdomen very coarsely deeply and densely punctured, the coarse punctures of the basal depressions longitudinally coalescent, forming fine strong ridges ; pubescence of the pro- notum and elytra fine, subrecumbent, very dense and distinct, of the abdomen longer but fine, sparse and very inconspicuous. Head orbicular, as long as wide, three-fifths as wide as the prothorax ; antennae feebly incrassate, slightly longer than the head and prothorax, third joint obconical, elongate, two and one-half times as long as wide and much longer than the second, tenth scarcely one-half wider than long. Prothorax broadly ovoidal, one-half wider than long ; sides broadly, strongly arcuate, becoming distinctly convergent in apical half; base broadly, strongly arcuate, much wider than the apex which is feebly arcuate ; basal angles obtuse and blunt ; disk broadly, evenly convex, without trace of impression. Elytra distinctly transverse, slightly wider than the prothorax and about as long as the latter ; sides subparallel and broadly arciiate ; humeri not distinct. Abdomen much longer than the anterior parts, very slightly narrower than the elytra ; sides parallel and straight ; first three 286 Coleopferological Notices, V. segments very strongly impressed at base tlirough about one-half of their length ; fourth and fifth equal in length. Legs rather short ; posterior tarsi very much shorter than the tibiae, with the first joint distinctly shorter than the next three. Length 4.0^.2 mm. ; width 1.2 mm. New York (Catskill Mts.); North Carolina. The middle coxte are moderately distant, the mesosternal process extending nearly to the apex, with its sides becoming parallel, the apex transversely truncate with the angles right and not rounded, the apical margin just visibly bisinuato, the fine acute median carina extending to the tip, the space between the carina and side margins broadly concave. This species is about twice as large as the Euro- pean morion Grav., and has much longer antennae. B. thoracica n. sp. — Stout, thick, parallel, polished, black, the lateral limbs of the pronotum feebly rufescent from diaphaneity ; elytra, tip of the abdomen, legs and basal joint of the antennae clear pale rufous ; head ex- tremely minutely, scarcely visibly, remotely punctate ; pronotum very finely, sparsely, uniformly so ; elytra strongly, rather closely and asperately ; abdo- men sparsely, unevenly, subrugosely sculptured ; pubescence rather short, not very dense, stiff, inconspicuous, long and sparse on the abdomen. Head strongly deflexed, oval, longer than wide, less than one-half as wide as the prothorax, convex ; eyes well developed ; antennje long, distinctly incrassate, extending fully to the middle of the elytra, third joint feebly obconical, nearly three times as long as wide, longer than the second, tenth very slightly wider than long. Prothorax large, transversely suboval, three-fifths wider than long ; sides broadly, strongly arcuate, convergent anteriorly becoming gradually parallel in basal half; base broadly, rather strongly arcuate, miicli wider than the more feebly arcuate apex ; basal angles very obtuse and rounded but not obliterated; disk evenly, strongly convex, without trace of impression. Elytra very short, twice as wide as long, not in the least wider than the disk of the pronotum and scarcely more than two-thirds as long as the latter ; sides just visibly divergent and arcuate from the base ; disk not impressed, the apex transverse. Abdomen — when contracted — not longer than the anterior parts, at base as wide as the elytra; sides subparallel, becoming feebly con- vergent toward apex ; first three segments narrowly, deeply impressed along the base ; fifth distinctly longer than the fourth. Legs rather long ; posterior tarsi very long and slender, only slightly shorter than the tibise, with the basal joint fully as long as the next three combined. Length (contracted) 3.0 mm. ; width 1.1 mm. Canada (Grimsby). The abdomen is reflexed from the base. The middle coxas are moderatel}'" distant, the mesosternal process extending nearly to their apices where it is as usual superposed on the tip of the short metasternal projection ; the sides of the process are feebly conver- Coleopterohgical Notices, V. 287 gent, the apex transversely sinuato-truncate with the angles not rounded, and, along its surface there is a low rounded ridge, extend- ing to the apex and occupying one-third of its entire subapical width. The differences between this and the preceding species are almost certainly subgeneric; the general appearance of thoracica is not uni'emindful of Oxypoda. B. bipartita n. sp. — Stout, subfnsiform, rufo-piceous in color, the head and abdomen darker and blackish; elytra scarcely visibly clouded with blackish along the suture and toward the flanks ; legs pale flavate through- out; antennae fuscous, paler toward base, the eleventh joint also paler except toward its base ; integuments strongly shining, the head finely, strongly, not very densely, the pronotum finely, strongly, evenly and extremely densely punctate ; elytra finely, still more densely, subasperately punctate, the abdo- men much more coarsely, very densely and subrugosely ; pubescence coarse, stifl", dense, short, pale fulvous and distinct, finer darker sparser and incon- spicuous on the abdomen. Head small, orbicular, not as long as wide, scarcely more than one-half as wide as tl)e prothorax, the eyes large, elongate, at much less than one-half their length from the base; infralateral carina strong, entire ; vertex evenly convex ; antennae short but only slightly incrassate, not quite as long as the head and prothorax, the second and third joints equal in length, the first longer and stouter, fourth but little wider than long, six to ten equal, slightly though distinctly transverse, eleventh subconical, rather acute, somewhat longer than the two preceding. Prothorax not quite twice as wide as long, the sides strongly convergent, very evenly and moderately arcuate from base to apex ; base strongly arcuate, four-fifths wider than the apex, which is less strongly arcuate ; basal angles very obtuse, rounded ; apical equally obtuse but less broadly rounded ; flanks greatly deflexed, the disk completely unimpressed, the fine basal bead distinct. Elytra at base equal in width to the prothorax, which is widest at its base, toward apex quite distinctly wider than the prothorax, equal in length, strongly trans- verse, the humeri concealed ; sides feebly divergent, evenly and unusually strongly arcuate throughout ; disk flattened toward the middle. Abdomen quite distinctly longer than the anterior parts, at base equal in width to the elytral apex ; sides feebly convergent and straight to the apex ; first two seg- ments only feebly impressed but not more coarsely punctured at base ; fifth distinctly longer than the fourth ; border thick, moderately deep. Legs short ; posterior tarsi slightly shorter than the tibi;e, the basal joint barely as long as the next two and slightly longer than the last. Length 3.7 mm. ; width 1.3 mm. Texas (Galveston). The mesosternal process is moderate in width and extends to the very apex of the coxae, the apex subtruncate with rounded angles, the median carina entire, strongly elevated and finely compressed. This species greatly resembles an Oxypoda in outline. The contrast 288 Coleopterological Notices, V. between the fine dense punctuation of the anterior parts, and the coarser, beautifully regular sculpture of the abdomen, is very marked. RHEOCHARA Hey. The species described below is assigned provisionally to this genus, although the outer joints of the antennae are strongly trans- verse, the first three tergites gradually less strongly impressed at base, the posterior tarsi much shorter than the tibiae, and the ante- rior tibiae entirely devoid of spinules. It will probably form a genus distinct from Rheochara, but at present it is not advisable to sepa- rate it, as I have no representative of Rheochara with which to compare it. R* lucifuga n. sp..— Slender, moderately convex, pale ochreous-yellow, the head piceous and the abdomen with a large very feeble piceous cloud near the apex ; apices of the three basal segments paler than the base ; surface feebly shining, the abdomen polished ; pubescence rather coarse, decumbent, moderately dense, sparser on the abdomen. Head ovulate, longer than wide, three-fifths as wide as the prothorax, evenly convex, finely, sparsely punctate ; eyes moderate, before the middle ; infralateral ridge very strong ; ligula with a short thick simple and membranous deflexed process bearing two setse ; terminal supplementary palpal joint distinct ; antennse as long as the head and prothorax, thick, the first three joints gradually decreasing in length, four to ten transverse, increasing greatly in size, the tenth rather strongly transverse, eleventh large, feebly pyriform, as long as the two preceding, outer joints somewhat perfoliate. Prothorax one-fourth wider than long, sides subparallel, broadly arcuate, distinctly convergent only in apical third ; base broadly arcuate, much wider than the apex ; basal angles very obtuse but not obliterated ; disk widest just behind the middle, broadly, feebly convex, finely feebly and somewhat closely punctate, not in the least impressed, the edges, except at apex, finely beaded ; hypomera slightly visibly from the sides, subhorizontal. Elytra one-half wider than long, not distinctly wider and a little shorter than the prothorax ; sides subparallel, feebly arcuate ; humeri rounded, slightly exposed ; disk rather finely but strongly, somewhat closely, subasperately punctate ; suture strongly margined, scarcely impressed. Ahdo- jKcn^when extended — not quite twice as long as the anterior parts, very slightly narrower than the elytra ; sides just visibly convergent behind the middle ; fourth segment a little shorter than the fifth, the latter very remotely punctate ; basal impressions not more densely or coarsely punctate. Legs moderate ; posterior tarsi much shorter than the tibia, slender, with the basal joint fully as long as the next two. Length (extended) 4.8 mm. ; width 0.9 mm. Kentucky (Lexington). Prof H. Garman. The mesosternal process is long, extremely slender and acutely pointed, extending to and over the acute apex of the mesosternal Coleopterological Notices, V. 289 process at about two-thirds the coxal length. This interesting species is said to inhabit caves, but as the eyes are well developed, it probably only seeks their seclusion and darkness during the day. The genus Rheochara seems to be distinct from Aleochara, with which it is united in the recent European catalogue. POLISTOMA Steph. There is considerable variation in the form of the mesosternal process in this genus, the apex being more truncate in the European species, but as the Californian species are intermediate in this re- spect between them and maritima, I have no doubt that the genus Emplenota Csy. will have to be suppressed ; I have used the name Polistoma however, as Polystoma is preoccupied. The North American species in my cabinet may be readily separated as fol- lows:— Basal joint of the hind tarsi short, only slightly longer than the second. Head very coarsely and conspicuously punctured. Atlantic coast. maritima Head more finely and sparsely punctured ; form broader. Pacific coast. arenaria Basal joint of the hind tarsi much longer, equal to the next two combined ; form still broader, the head and prothorax more transverse, the latter more strongly rounded at the sides ; pubescence sparser ; antennae more incras- sate ; deflexed apical angles of the prothorax very broadly rounded. Pacific coast paciflca The species of Polistoma throughout the world are remarkably homogeneous in general appearance. P. arenaria n. sp- — Parallel, rather depressed, black, the elytra some- times with a subquadrate rufescent cloud not attaining the base ; antennae black ; legs rufo-piceous toward tip ; head and pronotum opaque, extremely densely and minutely granulato-reticulate, rather finely, feebly, sparsely but distinctly punctate ; elytra rather less opaque, more strongly and closely punc- tured ; abdomen polished, sparsely finely and unevenly punctate; pubescence rather coarse, long, not dense but conspicuous, arranged transversely on the pronotum. Head orbicular, as long as wide, fully four-fifths as wide as the prothorax, parallel and broadly arcuate at the sides ; antennae feebly incras- sate, one-half longer than the head, the outer joints not more than one-half wider than long. Prothorax feebly transverse, subquadrate, one-fourth wider than long ; sides parallel, broadly, feebly arcuate; base and apex equal, the former evenly and very strongly, the latter feebly, arcuate ; apical angles strongly deflexed, narrowly rounded ; basal extremely obtuse but distinct ; disk evenly, feebly co;ivex, somewhat flattened in a broad median area toward 290 Coleopterological Notices, V. base. Elytra moderately transverse, slightly longer and much wider than the prothorax, parallel ; humeri distinctly exposed at base ; disk flat, deflexed at apex except laterally. Abdomen slightly narrower than the elytra, as long as the anterior part of the body, parallel and straight at the sides ; border strong ; segments subequal. Length 3.6-4.0 mm. ; width 0.9-1.1 mm. California (San Diego and San Francisco). Easily distinguishable from pacifica by the narrow, more parallel form and more conspicuous pubescence. Moderately abundant. It at first seemed probable that this species might be the same as Homalota litoralis of Maklin, since the elytra are frequently rufous with the base and external sides black, this being the described coloration of litoralis; but the phrases " thorace .... posterius ante basin latissime transversim impresso, confertim subtilissime punctulato" do not find the remotest correspondence, there being no trace of a transverse subbasal impression ; the width, also, ^ line — about | mm. — is not sufficient for arenaria. P. pacifica n. sp. — Parallel, moderately depressed, black, the legs rufo- piceous ; antennae picescent toward base ; elytra, except laterally, feebly rufo-piceous ; sculpture and punctuation as in arenaria, the pubescence much sparser and less conspicuous. Head much wider than long, scarcely more than three-fourths as wide as the prothorax ; eyes at rather more than their own length from the base ; antenn?e strongly incrassate, the outer joints fully twice as wide as long, one-half longer than the head, shorter and thicker than in arenaria, the second joint distinctly shorter than the third. Prothorax trans- verse, nearly one-half wider than long ; sides parallel, evenly, strongly arcuate ; apex broadly, strongly arcuate ; apical angles strongly deflexed, very broadly arcuate ; basal extremely obtuse and almost completely obliterated ; disk very feebly flattened toward the median line from base to apex. Elytra transverse, only slightly wider and longer than the prothorax ; sides subparallel, straight ; humeri strongly rounded to the prothorax ; disk flat, feebly deflexed at apex in the middle. Abdomen, when contracted, distinctly shorter than the anterior parts combined, nearly as wide as the elytra ; sides parallel and straight ; border strong, rather deep ; first three segments impressed at base ; fifth longer than the fourth. Length (contracted) 3.4 mm. ; width 1.15 mm. California (Sta. Barbara). The elongate basal joint of the hind tarsi will readily enable one to identify this species. A single specimen taken by Mr. G. W. Dunn. OXYPODA Mann. The types here assigned to Oxypoda cannot all be retained as such, for those species having the antennal joints abruptly enlarged Coleopterological Notices, V. 291 from the fourth, forming a long compact cylindrical club, have the metasternal process between the middle coxte long and acute, while the others, with slender or feebly incrassate antennae, have this pro- cess either entirely obsolete, or else in the form of an extremely short broad cusp. The former may or may not be congeneric with the European Mycetodrepa, of which I do not possess a represen- tative at present, but in any event the three here brought to notice differ greatly among themselves in somewhat important characters. The genus will prove to be very extensive in North America, and I have simply selected at the present time a number of hitherto undescribed forms, for the most part illustrative of groups; these may be known among themselves as follows : — Antenna more slender, gradually and generally feebly incrassate toward tip. Third antennal joint distinctly longer than the second, the antennae long ; abdomen parallel, narrowed slightly at the fifth segment ; prothorax widest before the base, the basal angles almost completely obliterated ; basal joint of the hind tarsi as long as the next three COngruens Third antennal joint equal in length to the second, both elongate ; antennae much shorter ; elytra distinctly longer than the prothorax. Prothorax widest before the base ; abdomen narrowed from base to apex ; basal joint of the hind tarsi as long as the next three. ..convergens Prothorax widest at base ; abdomen parallel, narrowed near the tip ; basal joint of the hind tarsi but sliglitly longer than the next two. inipressa Third antennal joint distinctly shorter than the second. Elytra longer than the prothorax. Elytra pale, clouded with black toward the scutellum and toward each flank; abdominal punctures not so dense nubifer Elytra uniform in coloration or very nearly so ; sides of the elytra j^er- fectly parallel; integuments subopaque saxatilis Elytra shorter than the prothorax. Prothorax subconical, widest at or near the base, where it is a little wider than the elytra. Abdomen blackish, the apices of the segments narrowly paler. glenorae Abdomen rufous, with a large blackish cloud occupying most of ter- gites three to five; form very slender ; size small nigriceps Prothorax with the sides perfectly parallel and broadly, evenly arcuate from base to apex, not wider than the elytra ; body very small and narrow, piceous and black in color lilieata. Antennae rapidly enlarged from and including the fourth joint, forming a long, compact, claviform mass. Antennae, except near the base, completely devoid of erect setae, clothed uniformly with excessively minute even pubescence, almost perfectly cylindrical from the fifth joint lllldSOIliCcl 292 Coleopterological Notices, V. Aiiteniife with short erect setae as usual, rapidly enlarged from the fourth to the sixth or seventh joints. Rufo-testaceous, the head and a large subapical abdominal cloud blackish. fustiger Black ; elytra slightly picescent, much paler at the humeri. californica I have been unable to recognize sagulata Er., which is a species apparently allied to convergens. but having pale antennte, with the apical joint obtuse, and a subparallel abdomen, and minuta Sachse, which is small, piceous, with the antennae toward base, legs, elytra and anterior parts of the abdomen testaceous; the latter is probably allied to nigriceps, but in that species the pronotum is very pale and the elytra dark. The species described by me as Oxypoda insignis is placed further on in the genus Anepsiota, allied to Atheta, the anterior tarsi being four-jointed. O. COngriiens. — Moderately stout and convex, parallel, brown, the head and abdomen black, the segments paler at apex above and beneath ; legs and antennae brown, the latter still paler toward base ; integuments alutaceous, excessively minutely, densely punctate throughout, the pronotum slightly less densely so and more shining toward base ; pubescence throughout very short, fine and dense, subsericeous. Head orbicular, rather longer tlian wide, but little more than one-half as wide as the prothorax, evenly convex ; eyes moderate, distant from the base ; antennae long, fully attaining the middle of the elytra, gradually and feebly incrassate, the second joint shorter than tlie first or third, the latter nearly as long as the next two, tenth joint not dis- tinctly wider than long, eleventh acutely conoidal, barely as long as the two preceding. Prothorax transversely suboval, the base moving freely above the elytra, fully three-fourths wider than long, the sides broadly arcuate, becom- ing convergent and straighter in apical half, the base much wider than the truncate apex, broadly, strongly arcuate, the basal angles almost completely obliterated ; apical but slightly deflexed, broadly rounded ; disk feebly im- pressed in the middle before the basal margin. Elytra moderately transverse, at base narrower than, at apex equal in width to, the prothorax, slightly longer than the latter ; sides distinctly divergent, broadly arcuate, especially near the base ; humeri concealed ; disk very indefinitely and widely impressed in the middle toward base. Abdomen but slightly narrower than the elytra, much longer than the anterior parts ; sides straight and parallel to the apex of the fourth segment ; first three tergltes impressed at base, successively less strongly; fifth slightly longer than the fourth. Length 3.4 mm. ; width 1.0 mm. Montana (Helena); Michigan. The elytral humeri are frequently a little paler than the other portions of the disk. This species, which appears to be widely dif- Coleojyterological Notices, V 293 fused, differs from the European sjoectabilis in its much smaller size and far less distinct basal angles of the prothorax. O. COnvergens. — Rather broad, siibfusiforra, black ; four basal joints of tlie antennae and the legs throughout pale; proiiotum gradually rufesceut toward base ; elytra and apices of all the ventral segments pale brownish- rufous ; integuments alutaceous, extremely finely feebly and densely punctate throughout, the head and pronotum rather the least densely punctate and more shining ; pubescence short, very dense throughout, sericeous on the abdomen, the latter bristling with stiff setae toward apex. Head wider than long, orbicular, evenly convex, scarcely more than one-half as wide as the prothorax ; eyes rather large, extending to within one-half their length of the base ; antennae feebly incrassate, as long as the head and prothorax, the first three joints equal in length, fourth subquadrate, five to ten subequal, a little wider, slightly transverse, eleventh rather acutely conoidal, barely as long as the two preceding. Prothorax fully two-thirds wider than long, the sides strongly convergent, broadly evenly and strongly arcuate from base to apex ; base fully three-fourths wider than the apex, broadly, strongly arcuate, the apex transversely truncate ; basal angles obtuse and rather blunt bat distinct ; disk just visibly wider at basal third than at base, not distinctly impressed. Elytra at base slightly narrower, at apex a little broader, than the prothorax, distinctly longer than the latter ; sides perceptibly divergent and feebly arcuate from base to apex ; humeri completely concealed ; external apical sinuations narrow and deep ; disk scarcely at all impressed. Abdomen at base distinctly narrower than the elytra, at the apex of the fifth segment one-half as wide as the latter ; sides perfectly straight ; border gradually thicker and deeper from apex to base ; two basal tergites very feebly impressed along the basal margin ; fifth nearly as long as the third and fourth together. Length 3.0 mm. ; width 0.9 mm. New York (Catskill Mts.). The abdomen is evenly narrowed from base to apex, and the fifth segment is unusually long. This species cannot be very closely allied to sagulata, although it approaches that species, according to description, closer than any other form here described. O. impressa. — Moderately wide and convex, black throughout, the elytra extremely indistinctly picescent ; antennae black ; legs rafo-piceous ; ventral plates slightly and narrowly pale at apex ; integuments but feebly shining, the head, pronotum and elytra finely and densely but rather dis- tinctly punctate, the abdomen much more minutely feebly and excessively densely so ; pubescence rather coarse, dense, semi-erect anteriorly, excessively minute and dense on the abdomen, each tergite, in addition, with a transverse apical series of long setae. Head orbicular, evenly convex, nearly as long as wide, slightly more than one-half as wide as the prothorax ; eyes rather large, at less than one-half their length from the base ; antennae moderate in length, slightly longer than the head and prothorax, rather slender and feebly in- 294 Coleopterological Notices, V. crassate, the first three joints subequal in length, fourth slightly longer than wide, outer joints distinctly transverse, the tenth less so than the ninth, equal in width but a little longer, eleventh short, acutely conoidal, not as long as the preceding two. Prothorax fully three-fourths wider than long ; sides broadly, evenly arcuate and distinctly convergent from base to apex ; base fully three-fourths wider than the apex, broadly, strongly arcuate ; apex subtruncate ; basal angles obtuse and blunt but definite ; disk extremely obsoletely impressed along the median line, with a large rounded and distinct impression in the middle before the base. Elytra sliglitly transverse, at base exactly equal in width to the prothorax and at apex slightly wider, fullv one- third longer ; humeri not exposed ; disk but feebly, indefinitely and broadly impressed in the middle toward base. Abdomen at base distinctly narrower than the elytra, the sides parallel and straight to the apex of the fourth segment ; fifth very much longer than the fourth. Length 2.75 mm. ; width 0.75 mm. British Columbia (Glenora). Mr. Wickham. Readily distinguishable from congruens by its smaller size, smaller prothorax with more distinct basal angles, shorter antennte, longer fifth ventral segment and many other characters. O. liubifer* — Somewhat narrow, subparallel, pale rufo-testaceous, the head piceous ; abdomen piceous, broadly pale at tip and at the apices of all the segments ; legs pale ; antennae dusky, pale toward base ; integuments strongly shining, extremely feebly sculptured ; head and pronotum finely and closely but feebly and not conspicuously punctate, the elytra scarcely so densely but more distinctly so, the abdomen minutely, feebly and moderately densely; pubescence short, decumbent, moderately dense. Head orbicular, evenly convex, as long as wide, a little more than one-half as wide as the prothorax ; eyes at nearly their own length from the base ; antennae short, feebly incrassate, not quite extending to the base of the prothorax, the second joint a little longer than the first and distinctly longer than the third, fourth siibquadrate, feebly obconical, five to ten subequal, distinctly wider than long, eleventh long, obtusely ogival, rather longer than the two preceding. Prothorax widest at base, two-thirds wider than long, the sides strongly con- vergent and feebly, evenly arcuate from base to apex ; base and apex equally, moderately arcuate, the former two-thirds wider than the latter ; basal angles — viewed laterally — very obtuse and blunt but not obliterated, the apical moderately defined, broadly rounded ; disk perfectly even, without trace of impression. Elytra at base scarcely as wide, but at apex fully as wide, as the prothorax, just visibly longer, slightly transverse ; sides subparallel ; humeri concealed ; apex strongly sinuate near the sides, the edge thence to the inner angles feebly, anteriorly oblique and straight ; disk unimpressed, with a black cloud near the scutellum and another longitudinal near the flanks, not attain- ing base or apex. Abdomen just visibly narrower than the elytra, not longer than the anterior parts ; sides parallel, the fifth segment slightly narrowed, distinctly longer than the fourth ; border thick ; posterior edges of tergites Coleopterological Notices, V. 295 two to four broadly, feebly sinuate. Legs rather short ; basal joint of the hind tarsi as long as the next two and equal to the fifth. Length 2.5 mm. ; width 0.7 mm. Utah (southwestern). The trimaeulate elytra, pale coloration, feeble punctuation and conical prothorax, with the base rather loosely fitted over the base of the elytra, are distinguishing characters of this rather isolated species. O. saxatilis. — Rather narrow and subparallel, blackish-piceous, the abdomen black, the apices of all the segments paler ; legs pale throughout ; antenna dark, pale toward base ; integuments densely opaque, finely, very densely punctate, the abdomen not less densely so, the elytra more distinctly ; pubescence fine, short, recumbent, extremely dense throughout, the abdomen without longer setae toward apex. Head a little wider than long, well inserted, three-fifths as wide as the prothorax, the eyes moderately large, approaching the base within one-half of their length ; antennae slender, feebly incrassate, loosely articulated, about as long as the head and prothorax, the second joint much longer than the first and nearly as long as the next two, four to six slightly increasing in width, six to ten subequal, slightly transverse, eleventh acutely ogival, as long as the preceding two. Prothorax two-thirds wider than long, the sides convergent and distinctly arcuate from base to apex ; base broadly arcuate, two-thirds wider than the subtruncate apex ; basal angles obtuse but evident ; disk not distinctly impressed. Elytra throughout the length exactly equal in width to the prothorax, one-third longer ; sides parallel, nearly straight ; humeri concealed ; disk with a small and just visible impression behind the scutellum. Abdomen at base slightly narrower than the elytra, at the apex of the fifth segment three-fourths as wide as the latter, distinctly longer than the anterior parts ; sides straight and just visi- bly convergent from base to apex ; border rather thick ; tergites two to four very feebly sinuate at apex ; fifth one-half longer than the fourth. Legs slender ; posterior tarsi filiform, the basal joint slightly longer than the next two and much longer than the fifth. Length 2J) mm. ; width 0.6 mm. Colorado (Canon City). Mr. Wickham. Readily recognizable by the parallel elytra, very nearly as long as wide, and by the opaque integuments. O. glenorae. — Narrow and elongate, pale brownish-testaceous, the head darker, rufo-piceous ; abdomen blackish, the apices of the segments paler ; legs pale throughout ; antennae piceous, paler toward base ; integuments feebly shining, extremely minutely and densely punctate throughout, scarcely more distinctly on the elytra ; pubescence minute, extremely dense throughout, the abdomen also with a few stiff liristles toward apex. Head slightly wider than long, well inserted, evenly convex, not quite two-thirds as wide as the pro- thorax ; eyes moderate, at nearly their own length from the base ; antennae 296 Coleoplerological Notices, V. slender, very feebly incrassate, barely as long as the head and protliorax, the second joint subequal in length to the first and one-third longer than the third, the latter nearly as long as the next two, four to six slightly increasing in width, six to ten subequal, slightly transverse, eleventh acutely ogival, fully as long as the two preceding. Ptothorax rather large, subconical, the base loosely fitted over the base of the elytra, three-fifths wider than long ; sides distinctly convergent and very feebly arcuate from the rather broadly rounded basal angles to the apex ; base broadly arcuate, much wider than the apex ; disk broadly and extremely obsoletely impressed along the median line in about basal half. Elytra transverse, at base distinctly narrower, at apex barely as wide as, the elytra, distinctly shorter than the latter ; sides divergent and nearly straight from base to apex ; humeri completely con- cealed ; disk with a small impression behind the scutellum. Abdomen one- half longer than the anterior parts, at base scarcely at all narrower than the elytra, at the apex of the fifth segment three-fourths as wide as the latter ; sides almost straight ; border rather thick and deep ; fifth segment much longer than the fourth. Legs moderate ; posterior tarsi scarcely at all shorter than the tibiae, with the first joint almost as long as the entire remainder ; two to four short and equal. Length 2.9 mm. ; width 0.7 mm. British Columbia (Glenora). Mr. Wickham. The extremely elongate basal joint of the hind tarsi and large conical loosely fitted prothorax, will readily lead to the identifica- tion of this species, which may possibly be referred to the subgenus Sphenoma. O. nigriceps. — Slender, subfusiform, convex, the head and antennae black, the latter pale toward base ; pronotum pale tlavo-testaceous thoughout ; elytra much darker, piceous ; abdomen with the two basal segments dark rufo-testaceous, the remainder black, with the apices narrowly paler ; integu- ments moderately shining, the head polished, rather coarsely, not very densely punctate ; pronotum more finely, very densely, the elytra more distinctly but finely, subasperately and extremely densely, the abdomen minutely densely subasperately and less distinctly ; pubescence fine, extremely short, rather dense but inconspicuous, the abdomen bristling with long setae toward tip. Head slightly wider than long, scarcely three-fifths as wide as the prothorax, evenly, strongly convex, the eyes moderate, at about their own length from the base; antennae short, rather slender, feebly, gradually incrassate and rather compact, not more than one-lialf longer than the head, the first two joints subequal in length, the second distinctly longer than the third, fourth to tenth feebly, gradually increasing in width, the latter nearly twice as wide as long, eleventh short, obtusely ogival, about as long as the two preceding. Prothorax large, rather more than one-half wider than long, the sides strongly convergent and feebly arcuate from base to apex ; base broadly arcuate, much wider than the apex, the basal angles obtuse and rather broadly rounded ; disk with an extremely obsolete impression in the middle before the base. Elytra distinctly shorter than the prothorax, and, throughout the length. Coleopterological Notices, V. 297 visibly narrower ; sides subparallel and feebly arcuate ; humeri wholly con- cealed ; disk feebly, transversely convex. Abdomen fully one-half longer than the anterior parts, at base nearly as wide, and at the apex of the fifth segment two-thirds as wide, as the elytra ; sides straight ; border rather thick ; fifth segment two-thirds longer than the fourth. Legs rather short and thick, the hind tarsi much shorter than the tibiae, with the first joint a little longer than the next two. Length 2.0 mm. ; width 0.45 mm. Rhode Island (Boston Neck). Readily separable from minuta Sachse, by the pale prothorax and dark elytra. The antennae are unusually short. O. lilieata* — Narrow and sublinear, convex, black, tlie pronotum piceous- blatk, the elytra feebly rufescent; antennae pale at base; legs pale flavo- testaceous throughout; integuments feebly shining, the pronotum and abdo- men extremely minutely and excessively densely punctate, the elytra equally densely but rather more strongly and subasperately, the head a little less finely and more sparsely ; pubescence extremely minute, dense, the abdomen as usual with an apical fringe of longer hairs on each tergite, but having only a very few longer set« toward apex. Head as long as wide, evenly convex, fully three-fourths as wide as the prothorax ; eyes moderate, at more than their length from the base ; antennae rather long, loose, feebly iucrassate, extending to basal third of the elytra, the third joint elongate, only slightly though visibly shorter than the second, joints increasing only very slightly in width toward apex, six to ten quite distinctly wider than long, the eleventh rather large, ogival at tip, fully as long as the two preceding. Protliorux — from above — only one-third wider than long, the sides parallel and evenly, broadly arcuate, widest at the middle; base and apex equal, feebly arcuate, the former fitted rather closely to the elytral depression ; basal angles obtuse and blunt l)Ut very evident ; disk not distinctly imi^ressed. Elytra short and transverse, quite distinctly shorter than the prothorax, at base as wide as the prothorax, and, at apex, just visibly wider ; sides perceptibly divergent and straight from base to apex ; humeri not exposed ; disk broadly, feebly impressed along the suture in more than basal half. Abdomen nearly one-half longer than the anterior parts, at base distinctly narrower than the elytra; sides subparallel, narrowed toward apex; border moderate; fifth segment one-half longer than the fourth ; sixth greatly visible, a little narrowed and parabolic but as long as the fifth. Leys moderate in length, slender, the hind tarsi but slightly sliorter than the tibiae, with the first joint a little longer than the next two. Length 2.1 mm. ; width rather more than 0.4 mm. t Rhode Island. This species is rather aberrant, not only in the subquadrate form of the prothorax, but in the total absence of the infralateral carina of the head. I cannot see, however, that it differs otherwise from Oxypoda. Annals N. Y. Acad. Sci., VII, Oct, 1893,-20 298 Coleopterological Notices, V. O. Illldsonica. — Moderately stout, subparallel, convex, pale flavo-testa- ceous throughout, the abdomen more rufous and less flavate, with a small dark cloud occupying about the fourth tergite ; integuments polished, the head and pronotum minutely and sparsely punctate, the elytra finely, densely, feebly but subasperately, the abdomen rather coarsely, strongly, distinctly and not very densely ; pubescence rather coarse, moderately dense, denser on the elytra. Head longer than wide, evenly convex, a little more than one-half as wide as the prothorax, the eyes moderate, black, at more than their own length from the base; antennae very thick, cylindrical, scarcely longer than the head and prothorax, the third joint but slightly shorter than the second but strongly, evenly obconical, not twice as long as wide, four to six very short and transverse, gradually wider, seven to ten equal, cylindrical, gradu- ally a little longer but not wider, strongly transverse, eleventh obtuse at apex, fully as long as the preceding two. Prothorax two-fifths wider than long, the sides feebly convergent, evenly and distinctly arcuate from the broadly rounded basal angles to the apex ; base and apex broadly arcuate, the former percepti- bly the wider ; disk very strongly, evenly convex, without trace of impression. Elytra moderately transverse, at base distinctly narrower, but at apex just visibly wider than, the prothorax, distinctly shorter ; sides slightly divergent, broadly arcuate toward base ; humeri concealed ; disk with a small sutural impression behind the scutelium. Abdomen one-half longer than the anterior parts, at base but slightly narrower than the elytra, and, at the apex of the fifth segment, almost four-fifths as wide ; sides nearly straight ; border rather thick ; fifth segment but slightly longer than the fourth. Legs somewhat stout; hind tarsi slightly shorter than the tibiae, with the basal joint as long as the next three. Length 2.7 mm. ; width 0.75 mm. New York (near the city). The infralateral carina of the head is fine but strong and entire, and the facets of the eyes are rather hirger and more convex than usual. The thick antennae, with their very peculiar and excessively minute dense vestiture, totally devoid of erect setae, render this species quite aberrant. O. flistiger. — Subparallel, convex, polished throughout, pale testaceous, the head piceous ; abdomen more rufous, blackish behind the second segment except at tip ; head finely, sparsely, the pronotum finely, rather less sparsely, feebly but subasperately punctate, the elytra more strongly, subrugosely but not more densely, the abdomen rather strongly, subasperately and not densely so ; pubescence coarse, inclined, not very dense, longer and still sparser on the abdomen, the latter without subapical bristles. Head wider than long, three-fifths as wide as the prothorax ; eyes normal, at nearly their own length from the base ; antennae short, very thick, scarcely as long as the head and prothorax, the basal joint oblong-oval, nearly as long as the next two, second thinner, one-half longer than wide and perceptibly longer than the third, which is slightly elongate and obconical, fourth wider, strongly transverse, fifth similar but wider, sixth to tenth longer than the fourth or fifth, compact, Coleopferological Notices, V. 299 very strongly transverse, eleventh short, not longer than wide, obtusely and obliquely ogival, scarcely as long as the two preceding, outer joints with short erect setae in addition to the minute pubescence. Prot/iorax three-fifths wider than long; sides distinctly convergent, evenly and' rather strongly arcuate frona base to apex ; base broadly, strongly arcuate, much wider than the trun- cate apex ; basal angles obtuse, blunt but very evident ; disk strongly, evenly convex, without impressions. Elytra throughout equal in width to the pro- thorax, distinctly longer, nearly quadrate ; sides subparallel, almost straight; humeri not exposed. Abdomen about as long as the anterior parts, at base almost as wide as the elytra ; sides feebly convergent from base to apex and just visibly arcuate ; fifth segment but slightly longer than tlie fourth ; under surface sparsely, deeply and coarsely punctate and sparsely clothed with long coarse hairs. Length 2.3 mm. ; width 0.7 mm. California (Humboldt Co.). Differs from the preceding species in the gradually wider and sparsely setose outer joints of the antennae, and in the structure of the basal joints. A single specimen of undetermined sex. O. californica. — Somewhat fusiform, convex, highly polished through- out, black, the elytra piceous, testaceous at the humeri and along the suture near the apex ; abdominal tip scarcely at all paler ; legs pale ; antennae black, pale toward base ; head and pronotum minutely feebly and sparsely punctate, the elytra finely but a little more strongly and still more sparsely so ; abdomen finely, scarcely distinctly and sparsely ; pubescence somewhat long, subrecum- bent, coarse and sparse. Head orbicular, as long as wide, evenly convex, nearly three-fourths as wide as the prothorax, the eyes at less than their length from tlie base ; antennse fully as long as the head and prothorax, stout, feebly setulose and finely pubescent, the first joint small, elongate-oval, longer than the second, the latter twice as long as wide and distinctly longer than the third, fourth and fifth very short and transverse, increasing in width, sixth to tenth subequal in length and width, longer than either the fourth or fifth and not more than twice as wide as long, eleventh short, obtusely and obliquely ogival, about as long as the two preceding. Prothorax rather small, three-fourths wider than long, the sides convergent and arcuate from the broadly rounded and almost obsolete basal angles ; base and apex broadly arcuate, the former much the wider ; disk evenly, strongly convex, unim- pressed, the basal bead strong. Elytra large, but slightly wider than long, one-fourth wider and rather more than one-half longer than the prothorax ; sides subparallel ; humeri quite distinctly exposed, rounded ; disk strongly and widely impressed on the suture in more than basal half. Abdomen as long as the anterior parts, at base much narrower than the elytra, and, at the fifth segment, one-half as wide as the latter ; sides feebly convergent from base to apex and just visibly arcuate ; fifth segment distinctly longer than the fourth. Legs rather long, very slender ; femora unusually narrow ; hind tarsi two- thirds as long as the tibise, with the first joint longer than the next two but shorter than the fifth. Length 1.9 mm. ; width 0.7 mm. 300 Coleopterological Notices, V. California, Tbe antenna? are not as stout as m fustiger, and have the ontcr part more cylindrical, and, in addition, the prothorax is miicb smaller, the elytra larger and the coloration wholly different. This is the most sparsely punctate and polished species of Oxypoda which I have seen. ACHROIUOTA u- gen. Body fusiform, moderately convex. Head small, but feebly con- stricted at base, not inserted deeply in the prothorax ; eyes well developed ; infralateral carina almost obsolete. Antennae long and slender, scarcely perceptibly incrassate, setose, the first three joints elongate. Mentum rather large, trapezoidal, broadly sinuate at apex. Maxillary palpi well developed, the third joint slightly longer than tbe second : fourth very slender, unusually long, oblique, more than one-half as long as the third, simple at apex. Ligula imperfect in the type. Prothorax transversely sobovaJ, the hypo- mera broad, strongly inflexed and invisible from the side poste- riorly, but becoming horizontal anteriorly. Elytra well developed. Abdomen gradually narrowed almost from the base ; border rather deep; first tergite broadly impressed at base, shorter than the second, the others completely unimpressed at base ; fifth just visibly longer than the fourth. Coxa? large, the intermediate very approximate but not contiguous, the mesosternal process not extendii:g behind the middle. Metasternum not advanced between the coxae, the fine beaded line merely feebly arcuate opposite the intercoxal space, the surface thence to tbe mesosternum transversely convex, the para- pleurte rather wide, parallel to the elytra, the epimera not projecting behind the elytra. Legs rather long and slender ; tarsi slender, 5-5-5-jointed, the posterior slender but much shorter than the tibise, with the first four joints slightly elongate and as nearly as possible perfectly equal, the fifth very long, longer than the two preceding- combined j claws moderately long, slender, evenly arcuate. It seemed possible at first that the type of this genus might enter Oxypoda as an aberrant member or subgenus, but the tarsal struc- ture is so radically diff"erent that it is impossible to place it there. In fact there is no European genus near Oxypoda which has the posterior tarsi constituted in any way approximating this, but for the present it may be considered as allied to Thiasophila. The anterior tarsi are five-jointed, apparently without the slightest Coleopterological Notices, V. 301 doubt, which will prevent us from placing the genus among the allies of Colpodota. A. flisiforinis n. sp. — Rather stout, Wark, the elytra juet visiblj^ mfo- piceons ; legs and antennae throughout pale; integuments finely but not strongly reticulate, rather shining, the head very sparsely, ohsoleteiy punc- tate, more coarsely so toward the sides and base ; pronotuoi finely, not densely and obsoletely, the elytra strongly, closely and asperately punctate, the abdo- men more sparsely, feebly and subasperately, very sparsely so toward apex ; pubescence short, coarse, decumbent, moderately distinct, sparser on the abdo- men, the latter bristling with long erect setae toward apex. Ilecul orbicular, wider tiian long, about three-fifths as wide as the prothorax, strongly, evenly convex ; eyes not prominent, at rather less than their own length from the base; antennse long, slender, fully attaining the middle of the elytra, the fourth and fifth joints longer than wide, about two-thirds as long as the third, outer joints rather loosely connected, very feebly increasing in width, the tenth mot distinctly wider than long, eleventh pointed, as long as the two preceding. Pivthorar three-fourths wider than long; sides broadly arcuate, subparallel toward base, becoming straighter and distinctly convergent in apical half; base broadly, strongly arcuate, much wider than the truncate apex, becom- ing feebly subsinuate near the basal angles, which are obtuse and slightly rounded ; apical angles only feebly deflexed, rounded ; disk transversely, strongly convex, very obsoletely impressed along the median line toward the middle, the posterior margin strongly beaded. Elytra two-fifths wider than long, at base scarcely as wide as the pronotal disk, but at apex distinctly wider, about one-third longer; sides distinctly divergent, fiubareuate ; humeri concealed ; disk rather strongly, indefinitely impressed on the suture behind the seutellum. Abdoiiien equal in length to the anterior parts, at base slightly narrower than the elytra, the apex of the fifth segment scarcely more than one-half as wide as the elytral apex ; tergites, except the first, perfectly even, not impressed, broadly, feebly convex toward the abdominal apex. Length 2.1 mm.; width 0.75 mm. New York (near the city). Mr. H. H. Smith. The single specimen in mv cabinet has no sexual marks of promi- nence; the sixth tergite is feebly exserted, much narrower than the fifth, with its apex feebly, evenly sinuato-truncate. THIASOPHILA Kraatz. The Ameriean species of this genus resemble the European angulata Er., in all essential points of structure, sculpture and vestiture, but have the prothorax a trifle wider near the base, and the abdomen more parallel and much n)ore distinctly narrower than the elytra. The genus is widely diffused throughout the subarctic 302 Coleo2)terological Notices, V. portions of the continent. The three species here brought to notice may be readily distinguished as follows: — Elytra but slightly longer than the prothorax, the apical angles of the latter blunt but rather distinct ; antennae shorter and less incrassate. Abdomen less elongate, slightly narrower tlian the elytra, strongly distinctly and moderately densely punctate, tlie dorsal plates strongly transverse. laticollis Abdomen longer, much narrower than the elytra, A-ery finely densely and indistinctly punctate, the dorsal plates less than twice as wide as long. angustiTeutris Elytra decidedly longer than the prothorax, the apical angles of the latter more broadly rounded ; abdomen nearly as in luticoUis, but differing con- spicuously in coloration; size small asperata I am unable at present to say anything about the habits of these insects, but in Europe they are generally inquilinous with ants. T. laticollis n. sp. — Rather stout and convex, dark piceo-rufous, th^ abdomen uniformly blackish but pale at the apex ; legs and antennje rufo- testaceous, the latter just visibly clouded toward the middle ; head finely but strongly, the pronotnm more finely and very densely, the elytra strongly densely and subasperately punctate ; abdomen with imbricate sculpture, gradu- ally disappearing behind, the punctures fine but strong, isolated and distinct, sparse toward tip ; pubescence very short, stiff and rather dense. Head orbicu- lar, not as long as wide, but slightly more than one-half as wide as the pro- thorax ; eyes large, prominent, at less than their own length from the base; tempora convergent and broadly rounded behind them ; antennfe a little longer than the head and prothorax, rather slender, feebly incrassate, the joints somewhat compactly united, the first and third subequal, longer than the second, fourth and fifth slightly longer than wide, tenth scarcely visibly wider than long, eleventh as long as the two preceding, pointed, constricted just beyond the middle. Prothorax transverse, not quite twice as wide as long, the apex subtruncate, about three-fourths as wide as the base, the latter broadly, feebly arcuate, distinctly sinuate near the basal angles, which are nearly right though slightly blunt ; sides convergent and feebly arcuate in apical two-thirds, just visibly convergent in basal tliird ; disk even. Elytra transverse, at base quite distinctly narrower than the protliorax, slightly longer than the latter ; sides just visibly arcuate ; disk rather convex, feebly, indefinitely impressed on the suture toward base. Abdomen — when contracted — scarcely as long as the anterior parts, parallel, slightly but distinctly nar- rower than the elytra, the border thick ; first three segments feebly and gradu- ally less distinctly impressed at base; fourth and fifth equal. Length 2.7 mm. ; width 0.8 mm. New York. The single specimen is of undetermined sex; it represents a larger broader and more distinctly sculptured species than the following. Coleopferological Notices, V. 303 T. an^lIstiTentris n. sp. — Rather convex, dark red-brown, the abdo- men darker with the apex pale; legs and antennae throughout pale brownish- flavate ; anterior parts rather dull, finely, extremely densely but somewhat distinctly, subasperately punctate, the elytra a little less densely and sub- rugosely; abdomen more shining, minutely, much less closely punctulate ; pubescence very short but somewhat coarse and close, distinct, long and sparsely fimbriate at the apices of the abdominal segments. Head wider than long, three-fifths as wide as the prothorax ; antennae much longer than the head and prothorax, moderately incrassate. Prothorax fully three-fourths wider than long, the sides very feebly convergent from base to apex, broadly, nearly evenly arcuate from above, widest just behind the middle ; apex broadly sinuate ; apical angles deflexed, obtuse, not rounded ; basal obtuse, rather prominent, not in the least rounded ; base broadly arcuate, just visibly sinuate near the basal angles ; disk broadly, evenly convex. Elytra one-half wider than long, broadly, deeply emarginate at apex, very slightly longer than the prothorax and equally wide ; sides subparallel, very feebly arcuate; base equal to the pronotal base ; humeri not in the least visible ; disk trans- versely convex, just visibly impressed behind tlie scutellum. Alnlomen at base much narrower than the elytra, much longer than the anterior parts ; sides parallel and straight but convergent toward apex ; border thick. Length 2.0-2.4 mm. ; width 0.6 mm. Rhode Island ; Florida; Iowa. Readily identifiable by the wide convex pronotum and elytra and abruptly narrow parallel abdomen ; the prothorax is less strongly narrowed anteriorly than in laticollis. T. asperata n. sp. — Subparallel, somewhat convex, red-brown ; legs and antennae throughout pale, flavescent ; head piceous ; abdomen brighter red, with the fourth segment piceous-black ; head and abdomen very minutely, sparsely punctulate ; pronotum and elytra strongly, asperately, densely and equally punctured ; pubescence short, stiflf, subrecumbent, rather dense and distinct, sparse on the abdomen. Head orbicular, as long as wide, three-fifths as wide as the prothorax ; antennae moderately incrassate, much longer than the head and prothorax, outer joints slightly transverse. Prothorax rather more than three-fourths wider than long, throughout nearly as in angustiven- tri^, but with the apical angles distinctly rounded when viewed laterally, and the basal obtuse and just visibly blunt. Elytra scarcely as wide as the pro- thorax and fully one-third longer, the apex transversely truncate, just visibly sinuate toward the middle and deeply so near each external angle ; sides parallel and almost straight ; humeri not in the least exposed ; base equal to the pronotal base ; disk not distinctly impressed and but slightly more than one-third wider than long. Abdomen only slightly but distinctly narrower than the elytra, scarcely longer than the anterior parts ; sides straight and parallel, feebly convergent toward apex ; first five segments exactly equal in length. Legs, coxae and tarsi as in angusticentris. Length 2.0 mm. ; width 0.5 mm. 304 Coleopterological Notices, V. California (Lake Tahoe and Truckee). A much smaller species than laticoUis, Avith more rounded apical angles of the prothorax and somewhat longer elytra ; the pronotal sculpture is coarser than in angvstiventris. ISOGLOSSA n. gen. Body rather stout, subfusiform, convex. Head small, not at all constricted at base, well inserted, the eyes large, sparsely setose, at less than their own length from the base ; labrum very short, trans- versely arched and feebly produced in the middle in a rounded lobe • infralateral carina strong. Antennae long, very feebly incrassate, the first three joints long, subequal in length ; fourth feebly obconi- cal, longer than wide; outer joints moderately close, scarcely visibly wider than long; eleventh conoidal, pointed, barely as long as the two preceding. Mentum large, transversely trapezoidal, truncate; ligula with a slender deflexed and simple terminal process; labial palpi slender, three-jointed. Maxillary palpi normal, the fourth joint long and distinct. Prothorax feebly transverse, the basal angles rounded ; hypomera subhorizontal, in part visible from the side. Elytra large and well developed. Abdomen feebly narroAved from the base, the first three segments impressed at base; fifth longer than the fourth. Anterior coxae very large ; intermediate almost completely contiguous. Metasternum large, the side-piece.s moderate in width, parallel, not extending beyond the elytra. Legs long ; tibiae densely clothed with even and equal stiff inclined setae, not in the least spinulose; tarsi 5-5-5-jointed, slender, the posterior distinctly shorter than the tibiae, with the basal joint very long, equal to the last and rather longer than the next two together ; claws long, slender, feebly arcuate. The feeble inflexion of the hypomera seems to ally this genus to Thiasophila and Stichoglossa, particularly the latter, but the antenme are much more elongate and the sculpture and facies very diiferent. I. arciiata n. sp. — StovU, polished througliont, dark piceous-browii, the antennPB concolorous but paler toward base ; abdomen black, with the apices of the first three segments slightly pale ; legs pale Havate throughout ; head and pronotum very minutely, extremely sparsely punctate, the elytra rather more reticulate, the reticulations transverse, more strongly, rather closely punctate ; abdomen finely, not densely punctate, the punctures extremely re- mote toward apex ; head, pronotnm and abdomen coarsely, extremely sparsely pubescent, the elytra more finely and decidedly densely so. Head barely Goleopterological Notices, V. 305 three-fonrths as wide as the protliorax, distinctly transverse ; antennae much longer than the head and protliorax combined, the eleventh joint not paler. Prothorax transversely subelliptical, one half wider than long; sides sub- parallel, a little more convergent anteriorly, strongl/ arcuate from above; base slightly wider than the apex, strongly, evenly arcuate throughout, not at all sinuate near the basal angles, which are very obtuse and distinctly rounded ; apical angles strongly deflexed, even somewhat inflexed, broadly rounded ; disk strongly convex, with the median line very feebly impressed and a large rounded and rather strongly impressed dent in the middle just before the base. Elytra large, but slightly wider than long, one-fifth wider and nearly one-half longer than the prothorax, at base fully as wide as the pronotal disk ; humeri very slightly visible, rounded ; sides subparallel, slightly arcuate; apex subtruncate, the lateral sinuations distinct ; disk sub- convex, broadly, strongly impressed along the suture, especially toward base. Abdomen quite distinctly shorter than the anterior parts, not more than three- fourths longer than the elytra when moderately contracted, at base slightly narrower than the elytra; sides convergent and just visibly arcuate to the apex, the apex of the fifth segment barely two-thirds as wide as the first ; border strong. Length 3.0 mm. ; width 0.95 mm. California (Lake Tahoe). The large elytra, transversely elliptical and polished pronotum, with the pronounced rounded subbasal indentation and long antennae will readily distinguish this species. OCYUSA Kraatz. The following species agrees satisfactorily in form and structural characters with 0. ])rocidua, but has a totally different system of sculpture; there appears, however, to be considerable disparity among the European species, which have been separated into sub- genera by Rey. O. aspertlla n. sp. — Subparallel, rather stout, compact and convex, black, the legs and basal parts of the antennae dark rufo-testaceous, polished, the punctures of the head and pronotum fine, not very dense and strongly granuliform, of the elytra sparse, strongly asperate, of the abdomen coarser, nearly normal, not dense but coarser and very dense on the fourth and fifth segments toward base ; pubescence fine, sparse but rather long. Head trans- versely orbicular, distinctly shorter and narrower than the prothorax ; sides parallel and rounded ; eyes at rather more than their own length from the base ; antennae nearly as long as the prothorax and elytra, thick toward apex, second joint fully one-half longer than the third, the latter obconical, twice as long as wide, fourth obconical, slightly longer than wide, four to ten sub- equal in length but evenly, perfectly gradually and conspicuously increasing in width, the tenth strongly transverse, eleventh ogival, obtuse. Frothorax 306 Coleopterological Notices, V. large and evenly, strongly convex, nearly one-half wider than long, widest just before the middle, tlie sides feebly convergent and nearly straight thence to the base, broadly rounded to the apex which is broadly arcuate ; base arcuate, rather wider than the apex ; basal angles obtuse and slighty rounded. Elytra strongly transverse, slightly shorter than the prothorax, at base just visibly narrower than the latter but equal at apex, the sides very feebly divergent, nearly straight. Abdomen a little longer than the anterior parts, as wide as the elytra ; sides subparallel but convergent behind ; border thick toward base; first three segments impressed at base; fifth longer than the fourth. Legs moderate ; tarsi all distinctly five-jointed, the posterior slender, distinctly shorter than the tibise, the first joint fully as long as the next two; middle coxse very slightly separated, the mesosternal process acute, prolonged for nearly two-thirds their length, with the apex slightly free. Ungues long, very slender, feebly and evenly arcuate. Length 1.6-1.75 mm. ; width 0.6 mm. Iowa ; Rhode Island. Rather abundant and probably occiirrin;?' in moss. The infra- ocular ridge is very strong and well developed, the hyporaera feebly inflexed and visible from the side. PIIL. llisillliatR n. sp. — Moderately short and stout, subparallel, pale flavo- testaceous throughout, the elytra rather albescent ; integuments polished, not in the least reticulate ; head and pronotum coarsely, sparsely piinctate, the elytra very nainuely sparsely and indistinctly so, the abdomen subimpunc- tate, except along the apices of the tergites, where there is a row of close-set, elongate, tubercular punctures bearing very long stiff setse, the under surface Coleopterological Notices, V. 321 covered throughout with long coarse hairs ; pubescence very sparse and in- conspicuous, the abdomen bristling with long setae ; there are also a few long erect setae toward the sides of the pronotum and elytra, and near the base of the latter. Head large, transverse, four-fifths as wide as the prothorax, the occiput feebly impressed in the middle ; antennae extending fully to the middle of the elytra, the club nearly one-third as wide as the head, not compressed. Prothorax four-fifths wider than long, widest at the apex, the sides rather strongly convergent and broadly arcuate to the basal angles, which are ex- tremely obtuse, rather indistinct ; base much narrower than the apex, sub- truncate ; marginal line of the flank extremely fine ; disk without trace of marginal bead, the edges convex, broadly impressed along the middle. Elytra transverse, slightly wider and one-half longer than the prothorax ; sides sub- parallel, nearly straight ; humeri moderately exposed at base. Abdomen at base much narrower, in the middle slightly narrower, than the elytra, shorter than the anterior parts ; sides parallel and strongly arcuate ; surfaces of tergites two to five broadly, feebly reflexed toward apex. Length 1.7 mm. ; width 0.7 mm. Florida. The sex of the type cannot be clearly distinguished, and the abdomen seems to be exserted in its basal parts but drawn in toward apex, which may account in part for the great preponderance in length of the two basal ses-ments. The genera more or less resembling Myrmedonia, which are represented by the material in my cabinet, may be defined as fol- lows : — Mesosternal process very short, not extending between the coxae for more than one-third of tiieir length, more or less broad at apex and separated from the metasternal process by a short broad isthmus, which is on the same level and not depressed Myriuedonia Mesosternal process longer, extending to the middle of the coxae. Mesosternal process broad, very broadly rounded at apex, the latter soldered to the apex of the metasternal by a short broad undepressed isthmus ; front before the line of the antennae abruptly and strongly declivous to the subhorizontal clypeus ; eyes as in Myrmedonia, large and near the base ; occiput thrown up in a strong transverse ridge Nototaplira Mesosternal process narrow, very acute, not in the least blunt at apex, the latter free and detached from connecting isthmus ; head long, oval ; front normal ; eyes small, distant from the base Anepsiota In all of these genera the side-pieces of the metasternum are broad, the epimera greatly developed and extending posteriorly behind the elytra. 322 Coleopferological Notices, V. MYRI^EDOBflA Erichs. Even within our own faunal limits, this interesting genus varies wonderfully in the degree of separation of the intermediate coxae, which is usually a character of considerable taxonomic value. It is only a striking example, however, of the fact frequently observed in large groups of arthropods, that characters unquestionably of general significance in defining genera may, in certain parts of the series, abruptly and unexpectedly lose all such weight. The few species known to me may be distinguished by the fol- lowing characters : — Punctures of the pronotum extremely fine. Apex of the mesosternal process moderate in width. Basal joint of the antennae large, extremely robust and pyriforra ; pro- thorax strongly transverse; middle coxae rather narrowly separated {Platyum Csy.) SOnoiliae Basal joint of the antennae more slender, sometimes moderately constricted at base ; middle coxae more widely separated. Prothorax transverse, the sides not at all sinuate toward base. caliginosa Prothorax but slightly wider than long, the sides broadly sinuate toward base. Third antennal joint greatly elongated, nearly as long as the next two; tenth but slightly wider than long faUTeli Third joint much shorter, but slightly longer than the second ; tenth very strongly transverse ; eleventh large, nearly as long as the preceding three combined angustllla, Apex of the mesosternal process extremely wide, straight, truncate and rather wider than the distance separating the antennae loricata Punctures of the pronotum normal but coarse and sparse, somewhat as in Zyras hawortJii but less remote and more even in distribution obliqiia Punctures of the pronotum sparse, strong and tuberculiform, at least in the male. Elytral punctures very coarse, deep and rather sparse ; abdomen coarsely spaisely and unevenly punctate, testaceous in color I*lldis Elytral punctures fine and dense ; abdomen subimpunctate planifer "Confertim subtilissime punctata, fusca, antennarum basi, thoracis lateribus, pedibus elytrisque testaceis, his sutura, basin versus latins, angulisque apicalibus oblique late infuscatis ; thorace transverso, obsoletius canalicu- lato, basi leviter trans versim foveolato. Long. 1^ lin. Lat. f lin. Penin- sula Kenai." angularly Coleopterological Notices, V. 323 I have not been able to identify angularis Makl., and transcribe the original short diagnosis; it is evidently a species allied to cali- ginosa, but differing in the pale sides of the prothorax. Fauveli Shp. is abundant throughout the United States from Pennsylvania to Los Angeles, Cal. ; I have taken it at Galveston and Waco in Texas. Budis Lee. is a large and very distinct species, with ex- tremely coarse and rugose pronotal sculpture. in. caliginosa n. sp. — Parallel, black, the legs and antennse toward base dark rufo-testaceous ; apices of tbe two or three basal tergites sometimes very briefly pale ; elytra fusco-testaceous, feebly, triangularly clouded toward base and toward the lateral apical angles with piceous ; head and pronotum minutely reticulate, alutaceous, extremely finely and not very densely punc- tate ; elytra and abdomen polished, the former finely but distinctly, densely punctate, the latter impunctate, with the exception of a few fine punctures near the apical margins ; pubescence fine, extremely short and inconspicuous, each tergite with a sparse apical fringe of longer hairs. Head slightly wider than long, fully three-fourths as wide as the prothorax, constricted at base ; eyes very large, at less than one-half their length from the base ; antennse rather compressed, separated at base by the length of the eye, thick, mode- rately incrassate, a little longer than the head and prothorax, basal joint moderately thick, as long as the next two, third obconieal, barely twice as long as wide, four to nine equal in length, gradually much wider, loosely perfoliate, the latter twice as wide as long, tenth equal in width but a little longer, eleventh conoidal, pointed, rather longer than the two preceding. Prothorax fully three-fourths wider than long, the sides subparallel, broadly arcuate, becoming straight and feebly convergent toward base, the basal angles very obtuse and blunt ; the apical rounded ; base broadly arcuate, about as wide as the apex ; disk even, with a very fine, frequently entirely obsolete, impressed line, without antebasal impression. Elytra transverse, slightly but distinctly wider and longer than the prothorax ; humeri some- what exposed ; suture not impressed. Abdomen subequal to the anterior parts, very slightly narrower than the elytra ; sides subparallel, feebly arcuate ; first three segments deeply equally and not very widely impressed at base ; fifth shorter than the fourth. Legs slender ; posterior tarsi long but much shorter than the tibiae, the first joint as long as the next two. Length S.0 mm. ; width 0.85 mm. New York (Catskill Mts.); Indiana. A somewhat common species, resembling a stout Atheta and easily recognizable by tbe large prominent eyes. M. angUStula n. sp. — Narrow, parallel, convex, polished throughout, dark piceous ; pronotum slightly paler and rufescent ; elytral humeri and a narrow apical margin, first three abdominal segments except at base, legs and antennae pale flavate ; head, pronotum and elytra extremely minutely, evenly, 324 Coleopterological Notices, V. rather sparsely and not distinctly punctate ; abdomen impunctate, excepting a widely spaced series bearing longer setae along the apex of each segment ; pubescence fine and rather inconspicuous above, longer and more distinct on the under surface of the abdomen. Head wider than long, slightly narrower than the prothorax, convex ; eyes moderate, at nearly their own length from the neck ; tempora moderately convergent, broadly arcuate ; antennae extend- ing fully to the middle of the elytra, the basal joint elongate, oval, not as long as the next two, outer joints rapidly wider, rather closely connected, strongly transverse, eleventh long, pointed. Prothorax but slightly wider than long, widest at apical third, where the sides are rounded and moderately convergent to the apex, distinctly convergent and broadly sinuate thence to the basal angles, which are nearly right and only slightly blunt ; base a little narrower than the apex, both broadly, equally arcuate ; disk rather strongly, evenly convex, not distinctly impressed. Elytra one-half wider than long, two-fifths wider than the prothorax but not distinctly longer than the latter ; humeri broadly exposed at base ; surface not impressed. Abdomen in the middle about as wide as the elytra ; sides parallel and quite distinctly arcuate ; basal seg- ments only finely impressed along the basal margins ; fifth shorter than the fourth. Legs moderate in length, slender ; posterior tarsi vei-y long and filiform but shorter than the tibiae, the basal joint as long as the next two. Length 2.3 mm. ; width 0.6 mm. Florida. This species resembles fauveli in general appearance, but is smaller and narrower, and may be known by its much more trans- verse penultimate joints of the antennae. M. lorica.ta. n. sp. — Parallel, rather convex, dark blackish-castaneous, the antennae dark rufo-piceous, paler toward base; abdomen black, the apices of the three basal segments paler ; legs piceous, the tarsi pale ; head and pronotum very finely, the former sparsely, the latter more closely, punctate ; elytra finely but strongly and distinctly, not densely punctate, the punctures becoming dense toward the inner basal angles ; abdomen impunctate, except sparsely along the apices ; integuments strongly shining, the abdomen highly polished ; pubescence fine, rather short, distinct. Head wider than long, four-fifths as wide as the prothorax, the occiput rather tumid ; eyes large, prominent ; antennae extending nearly to the middle of the elytra, strongly incrassate, feebly compressed, rather compact, the outer joints contiguous, basal joint slender, as long as the next two, third elongate, obconieal, twice as long as the second and as long as the next two, the latter equal, as long as wide, five to ten gradually increasing in length and greatly in width, the tenth nearly parallel, two-fifths wider than long, eleventh conical, not as long as the two preceding. Prothorax one-fourth wider than long, widest at apical third where the sides are very broadly, feebly arcuate, feebly convergent and slightly sinuate in basal half; base broadly, strongly arcuate, subequal to the apex, which is transverse, becoming feebly sinuate near the sides ; basal angles slightly obtuse, strongly marked, not at all blunt ; disk convex, the Coleopterological Notices, V. 325 median line finely and feebly impressed througliont. Elytra transverse, one- third wider but not at all longer than the prothorax ; sides feebly arcuate ; humeri broadly rounded and exposed ; disk broadly, feebly impressed at base. Abdomen at base much narrower than the elytra and as wide as the prothorax ; sides subparallel, broadly arcuate ; border thin and deep ; first three segments finely, deeply impressed ; fifth shorter than the fourth ; under surface sparsely, coarsely pubescent, finely punctate. Legs moderate ; posterior tarsi long but much shorter than the tibiae, the basal joint somewhat thicker than usual and very long, nearly as long as the next three. Length 3.6 mm. ; width 1.0 mm. Canada (Grimsby); Ohio. The distinguishing character of this species is the very wide truncate sternal piece between the cox», much exceeding in width that of any other known to me. The degree of separation of the middle coxte bears no relation whatever to the width of the body, for, in sonomae, which is a very much stouter species, the cox^ are unusually narrowly separated. M. obliqiia n. sp. — Stout, subparallel, polished, black, the antennte red- brown, paler toward base ; elytra pale rufous, clouded with blackish in a basal subtriangular area and also broadly toward the external apical angles ; apices of all the tergites and the legs throughout pale flavate ; head distinctly but extremely remotely, the pronotum strongly, rather coarsely and decidedly sparsely, punctate ; elytra rather coarsely, roughly but not densely so, the punctures becoming however very dense toward the scutellum ; abdomen finely, sparsely punctate throughout, with the pubescence long and fine, coarser and more evident beneath ; pubescence anteriorly coarse and some- what long but sparse, closer and more evident on the elytra. Head as long as wide, three-fourths as wide as the prothorax, the eyes moderate, at their own length from the base; tempera feebly convergent to the base; antennae longer than the head and prothorax, the basal joint slightly thick, not as long as the next two, third elongate, one-half longer than the second, not as long as the next two, fourth quadrate, four to ten very evenly and moderately increasing in width, the tenth rather shorter than the ninth, one-half wider than long, eleventh thick, obtusely ogival, as long as the preceding two. Prothorax fully two-fifths wider than long, widest at apical third, where the sides are rather strongly rounded and convergent to the apex, somewhat strongly convergent and nearly straight in basal half; base and apex sub- equal, the former strongly, the latter feebly arcuate ; basal angles very obtuse but evident, not distinctly blunt ; disk with a smooth, impuuctate but unim- pressed median line and a small deep impression in the middle before the base. Elytra one-half wider than long, two-fifths wider but only slightly longer than the prothorax ; sides feebly divergent and slightly arcuate from base to apex ; humeri obliquely, strongly rounded to the prothorax, not be- coming transverse ; disk scarcely at all impressed. Abdomen broad, as wide as the elytra ; sides parallel and just visibly arcuate ; border thick and not -vtiry 326 Coleopterological Notices, V. deep ; first three segments finely impressed at base, the impressions becoming almost obsolete near the sides ; fifth a little longer than the fourth. Legs moderate ; posterior tarsi long, filiform, shorter than the tibiae, with the first joint not thicker but distinctly longer than the next two. Length 3.8 mm. ; width 1.3 mm. New York. A fine species, somewhat suggestive of the subgenus Zyras, but with much less coarse and dispersed elj^tral sculpture. One speci- men, apparently female. M. planifer n. sp. — Moderately stout, subparallel, polished throughout, rufo-piceous, the elytra darker except near the humeri ; abdomen black, the first two segments in great part, and the third narrowly at the margin, pale ; legs pale throughout ; antennae fuscous, pale toward base ; head finely, sparsely, the pronotum still more finely sparsely and obsoletely, punctate, the latter with the flattened median area sparsely biit strongly and asperately so ; elytra finely but strongly, sparsely, subasperately punctate, more strongly but scarcely more densely toward the scutellum ; abdomen subimpunctate, except very obsoletely and remotely along the apical margins ; pubescence fine, sparse, rather more distinct on the under surface of the abdomen. Head much wider than long, four-fifths as wide as the prothorax ; eyes moderate, at nearly their own length from the base ; antennae stout, strongly incrassate, longer than the head and prothorax, the basal joint stout, nearly as long as the next two, third longer than the second, obconical, twice as long as wide, four to seven increasing in width, seven to ten subsimilar, rather compact, subparallel, nearly one-half wider than long, eleventh conical, as long as the two preceding. Prothorax transverse, three-fifths wider than long, widest at apical third where the sides are distinctly rounded to the apex, plainly con- vergent and straight — from above — in basal two-thirds ; base and apex equal, the former strongly, the latter very feebly, arcuate ; basal angles obtuse but not blunt; disk with a lai'ge flattened median region, the median line finely but distinctly impressed. Elytra transverse, two-fifths wider but only just visibly longer than the prothorax ; sides feebly divergent and arcuate from the humeri, which are rather broadly exposed ; disk slightly impressed near the sides behind the middle. Abdomen rather longer than the anterior parts, quite distinctly narrower than the elytra ; sides parallel, slightly arcuate behind ; border thin and deep ; first two segments widely and deeply impressed at base, the third finely and very feebly so ; fourth and fifth subequal. Leijs slender ; posterior tarsi much shorter than the tibiae, with the basal joint as long as the next two. Length 3.2 mm. ; width 1.0 mm. North Carolina (Asheville). The description is evidently drawn from the male, and in the female the asperate flat median area of the pronotum is probably wanting in great part ; the male has, in addition, the sixth tergite feebly emarginate and unevenly serrulate, a somewhat more isolated Coleopterological Notices, V. 327 median projection having three short teeth. This species is evi- dently allied to some of the Mexican forms described by Dr. Sharp. IVOTOTAPHRA n. gen. Body rather narrow, thick and subparallel. Head somewhat as in Myrmedonia, constricted at base throughout the width, the occi- put transversely prominent ; eyes moderate; infralateral carina not distinct. Antennae long, loose, subparallel from the fourth joint, not incrassate, pilose, but devoid of erect setae. The gular sutures diverge toward the base of the maxillge, and from between them there extends forward a large flat plate, gradually narrowed toward the truncate apex ; this plate is the mentum and its support fused in one and without trace of transverse suture. The lobes of the maxillfe are very long and slender. Ligula rather short, the termi- nal process small, gelatino-membranous, easily distorted but seem- ingly bilobed at apex. Labial palpi apparently two-jointed, the basal joint thick, cylindrical, less than twice as long as wide, the second a little shorter, slender and affixed obliquely. Prothorax narrowed and sinuate to the base, the hypomera feebly inflexed and in part visible from the side. Elytra well developed. Abdomen with the side margins thin and extremely deep. Middle coxae dis- tant, the mesosternal process broadly rounded at apex, the meta- sternal acutely angulate but widely separated at tip from the meso- sternal. Legs slender; tarsi 4-5-5-jointed, slender, the posterior shorter than the tibiae, with the first joint more or less elongate. If my interpretation of the structure of the labial palpi be correct this genus is really very isolated ; the structure of the front before the antenna?, of the mentum and its support, and the more prolonged mesosternal process will however, in any event, readily distinguish it from Myrmedonia. It seems to have some relationship also with the comparative giants described by Dr. Sharp under the name Platonica. Our two representatives may be readily separated as follows : — Basal joint of the hind tarsi as long as the next two ; blue-black, the pro- thorax and first three segments of the abdomen very pale yellowish-red. lauta Basal joint of the hind tarsi but slightly longer than the second ; black, tlie elytra slightly picescent lugubl'is Ti. lauta n. sp. — Rather slender, parallel, convex, minutely reticulate and rather alutaceous throughout, the elytra dullest ; pale rufo-liavate, the 328 Goleopterological Notices, V. head rufo-piceous ; elytra and abdominal apex black ; legs very pale ; antennre feebly infuscate toward tip ; punctures tlirougliout extremely minute, dense but scarcely visible, rather more distinct on the elytra ; pubescence consisting of extremely short fine appressed hairs, distributed thickly over the entire siirface including the abdomen, becoming sparse toward the apex of the latter. Head as long as wide, not quite as wide as the prothorax, deflexed ; eyes moderate, prominent, at one-half their length from the base ; depressed epis- toma polished, glabrous ; antennje extending nearly to the tip of the elytra, ratlier thick, loose, cylindrical, pubescent but without bristling setje, basal joint small, stout, pyriform, third longer than the second, obconical, not twice as long as wide, its apex oblique, four to ten somewhat asymmetrically obconi- cal, tenth as long as wide, eleventh small, conoidal, not as long as the two preceding. Prothorax transverse, three-fourths wider than long, widest at apical third where the sides are strongly rounded, becoming parallel and straight in basal half; base and apex equal, broadly arcuate; basal angles obtuse and slightly blunt ; disk rather abruptly declivous laterally, the median half from base to apex occupied by a very large deep indentation, which does not differ in sculpture or vestiture. Elytra large, one-half wider than long, one-half wider and one-half longer than the prothorax ; sides feebly divergent and straight ; humeri broadly exposed. Abdomen much narrower than the elytra, parallel, the three basal segments broadly, deeply impressed, polished and glabrous at base ; fifth shorter than the fourth. Length 2.8 mm. f width 0.8 mm. New York. The male, from which this description is taken, has the posterior part of the first tergite broad)}', feebly swollen. The second bears a large strongly elevated tubercle, occupying median third, the posterior wall of which is vertical, clothed with longer hair and having its face furrowed from summit to base ; the anterior wall is likewise vertical and its foot is at the margin of the impression. The third segment also has a strongly elevated abrupt elevation, occupying a little more than median third and apical two-thirds, the upper surface of which is flat and declivous posteriorly throughout, its anterior wall vertical and deep. I have not seen the female. IV. luglllblis n. sp. — Moderately stout and convex, somewhat shining; punctures throughout almost invisible ; pubescence extremely minute, mode- rately dense ; body black, the elytra feebly piceous ; legs piceous-black, the tarsi slightly paler ; antennje dark red-brown. Head as long as wide, deflexed, nearly as wide as the prothorax ; eyes moderate ; antennae thick, extending to the middle of the elytra, the basal joint thick and pyriform, much shorter than the next two, second small, a little longer than wide, third large, rather wider than long, asymmetric, four to ten scaicely differing in width and about as wide as the apex of tlie third, tenth more than one-third wider than long, eleventh moderate, conoidal, not quite as long as the two preceding. Pro- Coleopterological Notices, V. 329 thorax two-thirds wider than long, widest just before the middle where the sides are broadly, evenly arouate, becoming convergent and straight in basal half; base and apex equal, the former feebly arcuate, the latter truncate; basal angles obtuse ; disk with a large and very deep oval excavation, occupy- ing more than median third and extending from base to apex. Elytra large, nearly one-half wider and longer than the prothorax, the humeri broadly ex- posed. Abdomen distinctly narrower than the elytra, the sides straight, just visibly convergent from the base, the fourth and fifth segments equal in length. Length (abdomen strongly contracted and reflexed) 2.1 mm. ; width 0.9 mm, Colorado. The abdomen is strongly reflexile in both of these species, and the male described above has large discal processes on the second and third segments, almost precisely similar to those of the preced- ing species. So close a resemblance in these peculiar sexual marks is indeed singular, in view of the great differences in antennal and tarsal structure and coloration of the body. I think that these large tuberosities may possibly have some function in limiting the reflexibility of the abdomen. AA^EFSIOTA n. gen. Body parallel, moderately stout and rather feebly convex. Head oval, longer than wide, v\'ell inserted but borne on a neck which is not more than one-half as broad as the width across the eyes, the latter small, at nearly twice their length from the base, the tempora broadly rounded and convergent behind them. Antennse long, moderately incrassate, loose, the erect set® extremely short, the basal joint slightly longer and thicker than the second ; third rather longer than the second, both elongate, obconical and similar; fourth to tenth increasing in width, the former longer than wide, the latter .slightly wider than long ; eleventh long, ogival, finely pointed, barely as long as the two preceding. Mentiim moderate, trape- zoidal, the transverse suture at its base almost obsolete but better marked at the sides because of the lateral impressions of the men- tum. Ligula stout, short, the apical process well developed, split to its base, the two lobes subparallel, long and moderately slender. Labial palpi three-jointed, the basal joint stout, cylindrical, long, more than twice as long as the second, which is a little narrower and not longer than wide ; third slender, oblique, not as long as the first. Maxillary palpi long and well developed, the third joint obconical, a little longer than the second. Infralateral carina obso- Akxals N. Y. Acad. Sci., VII, Oct. 1893.— 22 330 Coleopterological Notices, V. lete except near the base. Prothorax rectangular, the hyporaera feebly inflexed, wide and greatly visible from the side. Elytra rather short and transverse. Abdomen wide, the segments short and equal, the first two finely impressed at base. Metasternal epi- niera large, extending distinctly behind the elytra. Legs short, the tarsi 4-5-5-jointed, the posterior very long, almost as long as the tibife, with the basal joint not as long as the next two, although elongate, the second fully as long as the last. The acute mesosternal process, extending one-half the length of the coxse with its apex free, the smaller eyes, more distant from the prothorax, narrower neck and many other structural characters necessitate a separation of this genus from Myrmedonia, although it is apparently somewhat allied ; it is more closely allied, however, to Atheta, Thorns. Quadricollis is the type of the genus. A. quadricolliid n. sp. — Parallel, polished throughout, pale rufo-testa- ceous, the head piceous ; abdomen blackish except indefinitely Dftward base and at apex ; legs pale throughout ; antenna black, testaceous toward base ; head and pronotum very finely sparsely and indistinctly punctate ; elytra more distinctly and closely, subasperately so ; abdomen throughout finely, subasi^erately and moderately closely punctate ; pubescence short stifi' and sparse, longer on the abdomen, where it is still denser beneath. Head rather narrow, two-thirds as wide as the prothorax, the occiput declivous at base but not prominent ; antennse attaining the apices of the elytra. Protltorax transversely rectangular, two-fifths wider than long ; sides parallel, broadly arcuate anteriorly, broadly sinuate behind the middle; basal angles obtuse and rounded ; base distinctly wider than the apex, broadly arcuate, the apex truncate, the angles rather broadly rounded ; disk broadly, feebly convex, slightly impressed in the middle before the base. Elytra two-thirds wider than long, slightly shorter than the prothorax, and, at apex, just visibly wider than that part ; sides feebly convergent to the base, the humeri not exposed at base, obliquely, feebly rounded ; disk impressed on the suture behind the scutellum. Abdomen — contracted — not quite as long as the anterior parts, at base fully as wide as the elytra and behind tlie middle somewhat wider ; sides parallel, very slightly arcuate ; border moderately thick, not very deep. Length 3.0 mm. ; width of abdomen 0.9 mm., of the elytra 0.8 mm. Vancouver Island. The deep emargination at the base of the first tergite, with its connecting membrane largely exposed when in a horizontal posi- tion, shows that the abdomen is strongly reflexile. I can observe no sexual marks about the single type specimen, which is probably a female. The two following species are provisionally attached to Anepsiota Coleopferological Notices, V. 331 although the posterior tarsi are decidedly shorter with the four basal joints differing much less in length. A. insignis Csy. — Bull. Cal. Acad. Sci., I, p. 310 (Oxypoda). This species is allied rather closely to wickhami, but differs con- spicuously in the wider and deeper impressions of the abdomen, the impression of the second tergite, for instance, occupying more than basal third, while in wickhami it is very narrow and feeble along the basal margin ; in insignis the prothorax is relatively smaller and shorter and more strongly punctate, the elytra longer, and the antennae rather shorter and less incrassate. A. Trickliaiui n. sp. — Compact, parallel, somewhat stout, feebly convex, minutely reticulate but strongly shining, the abdomen polished ; dark piceous- brown, the head and abdomen throughout black ; legs pale, yellowish ; antennae black, testaceous toward base ; head and pronotum finely, very feebly and remotely punctulate ; elytra finely but more distinctly, subasperately and rather closely so ; abdomen finely, feebly and remotely punctulate through- out ; pubescence rather long, decumbent and sparse. Head nearly circular, fully three-fourths as wide as the pronotum, strongly convex, feebly, coales- cently biimpressed just behind the line of the antennae, and also with a small impression at the center of the vertex between the eyes, the latter moderate, at more than their length from the base ; antennae attaining the middle of the elytra, moderately incrassate, the basal joint thicker and much longer than the second, the latter as long but not quite as thick as the third, both elongate, fourth a little longer than wide, tenth scarcely visibly wider than long, eleventh ogival, pointed, as long as the two preceding. Prothorax subquadrate, nearly one-half wider than long; sides parallel, feebly arcuate, becoming straight in basal half, distinctly convergent and broadly rounded toward apex ; base broadly arcuate, distinctly wider than the truncate apex ; basal angles obtuse and blunt ; disk scarcely impressed. Elytra one-half wider than long, slightly longer than the prothorax, and, at apex, nearly one-fourth wider ; sides dis- tinctly divergent and nearly straight from the humeri, which are broadly rounded and oblique but not much exposed at base ; disk broadly impressed on the suture throughout. Abdomen a little longer than the anterior parts, fully as wide as the elytra, the sides parallel and nearly straight ; first three segments distinctly, subequally but rather narrowly impressed transversely at base ; fourth and fifth equal in length. Legs moderate ; first joint of the ante- rior tarsi much shorter than the second. Length 3.7 mm. ; width 0.95 mm. British Columbia (Stickeen River Canon). Mr. H. F. Wickham. In this species the elytra are much more developed than in quad- ricollis ; it also has a more distinctly athetoid appearance. The mesosternal process is acute, prolonged to the middle of the coxse and free at apex; the metasternum is not produced at all between 332 Coleopterological Notices, V. the coxae, and its anterior line is only very feebly arcuate behind the narrow intercoxal space. The surface between the metasternum and the mesosternal process is occupied by a large and long subtri- angular isthmus, moderately compressed anteriorly, where it extends under the apex of the latter, and subtubercularly elevated at its centre. This is probably the structure also in qxiadricollis, but in the type of that species these parts are concealed, TARPHIOTA n. gen. Body subparallel, moderately wide, flattened above, opaque. Head well inserted, very slightly constricted at base, the eyes rather large and somewhat convex; labrum transverse, truncate; infralateral carina completely wanting. Antennae slender, filiform, scarcely visibly enlarged near the apex, setose, moniliform, the joints generally held slightly asunder by the narrow cylindrical basal peduncles; first three joints rapidly decreasing in length, the first thicker ; four to six equal in width, the former slightly elon- gate-oval, the latter subglobular ; seven to ten feebly transverse and just visibly increasing in width ; eleventh as long as the two pre- ceding, conoidal, compressed at tip. Mentum ample, trapezoidal, the apex rather broadly, feebly produced and feebly sinuato-trun- cate in the middle. Ligula with a deeply bifid process and two discal setae, the labial palpi three-jointed, the first and last joints longer than the intermediate. Maxillary palpi with the third joint a little longer than the second ; fourth distinct, rather stout, bulbose at base and apparently with an excessively minute bisetose apical appendage. Prothorax transversely subquadrate, narrower than the elytra, the hypomera feebly inflexed, broadly triangular and greatly visible from the side. Elytra greatly developed. Abdo- men linear, the first four tergites impressed at base, the first two rather more strongly ; fifth just visibly longer than the fourth. CoxsB moderately large, the intermediate extremely approximate but not contiguous, the mesosternal process long, finely acute and attenuate, extending two-thirds of their length, the metasternal process acutely produced beneath the mesosternal, the coxae well imbedded. Metasternum large, the side-pieces narrow, the inner margin arcuately approaching close to the elytra posteriorly. Legs rather short, somewhat stout ; anterior and middle tibiae strongly spinose externally ; tarsi 4-5-5-jointed, the posterior three-fourths as long as the tibiae, with the first four joints slightly elongate and Coleopterological Notices, V. 333 exactly equal, the fifth longer than the two preceding; ungues long, rather strongly, almost evenly arcuate, divergent and irregular, being strongly compressed toward the middle, with the inner edge thinned out and very acute. This interesting genus is probably more closely related to Alianta Thorns, than any other, but differs in its spinulose tibiae, longer and compressed tarsal claws, much more finely acuminate mesosternal process, less incrassate antennas and many other characters. From Heterota, Rey, it differs greatly in antennal structure, in the short basal joint of the hind tarsi, as well as in several features enumerated under Alianta. From Halobrectha Thorns, it differs in its almost filiform antennae and other characters. It is confined to the sea- beaches of the Pacific coast. T. pallidipes n. sp. — Moderately depressed, intense black throughout, the antennae piceous-black, paler at base ; legs extremely pale and uniformly tlavate throughout ; integuments opaque, finely and strongly granulato-reticu- late, the abdomen less strongly, more coarsely so and somewhat shining ; anterior parts finely and extremely obsoletely, though rather densely, punc- tulate, the punctures of the elytra almost wholly obsolete, the abdomen more strongly and distinctly, evenly and somewhat closely punctate ; pubescence short, rigid, dense, cinereous and conspicuous, longer, finer and less distinct on the abdomen. Head as long as wide, slightly but distinctly narrower than the prothorax, the eyes convex, at rather more than one-half their length from the base ; tempera behind them feebly convergent and arcuate to the base ; antennae slender, extending to basal fourth of the elytra. Prothorax scarcely more than one-third wider than long ; sides subparallel, broadly, feebly arcuate anteriorly, slightly convergent and nearly straight in basal half; basal angles slightly obtuse but scarcely at all rounded ; base broadly arcuate, distinctly wider than the truncate apex ; disk widest slightly before the middle, broadly flattened toward the middle, the median line sometimes obsoletely impressed. Elytra large, quadrate, about as long as wide, one-third wider and three-fifths longer than the prothorax; sides subparallel; humeri rather broadly exposed at base. Abdomen distinctly narrower than the elytra and slightly wider than the prothorax, as long as the anterior parts ; sides parallel and nearly straight ; border moderately thick. Length 2.9 mm. ; width 0.75-0.8 mm. California (San Francisco to San Diego). This is one of the characteristic aleocharinides of the southern California sea-beaches, and the large series in my cabinet indicates scarcely any variation. It is allied to the Alaskan Tachyusa fuci- cola Makl., — afterwards referred to Homalota Er. nee Mann., — but differs in its clear and uniform flavate \e^Q, fucicola having the legs piceous, with the knees and tarsi paler. 334 Coleopterological Notices, V. Besides these two species, the genus will probably include Homa- lota geniculata Mixkl., specimens of which, or of an extremely closely allied form, I have taken abundantly at San Francisco and San Diego; it probably follows the general rule, as observed in Mots- chulskium sinuatocolle, Aleochara sulcicollis and several other well-known species, and extends along the entire coast from Alaska to Lower California. This distribution of sea-beach species is exactly what might be expected, as the cold inshore current from the north maintains the water at practically the same temperature throughout. I am at a loss to understand the reference of genicu- lata to Eudera Fvl. in our most recently published check-list; it does not remotely resemble the representatives of that genus, which are related closely to Falagria. EIJRYPROIVOTA n. gen. * Body rather broad, convex. Head moderately inserted, the nuchal constriction concealed; eyes moderate, not prominent, at more than their own length from the base, the tempora parallel, nearly straight; labrum short, transverse, truncate. Antennae inserted in small foveae at a noticeable distance from the eye, feebly incrassate, the basal joint compressed; second and third subequal, the latter obconical, more than twice as long as wide ; tenth about as long as wide ; eleventh conoidal, as long as the preceding two. Maxillary palpi moderate, the third joint much longer than the second; fourth oblique, slender, one-half as long as the third. Ligula with a slender apical process forked at apex, the labial palpi apparently three-jointed, with the third joint long and slender. Infralateral carina obsolete. Mentum trapezoidal, the apex feebly emarginate. Prothorax very large, transversely orbicular, the hind angles very broadly rounded ; hypomera strongly inflexed, not visible from the side. Elytra moderate, much narrower than the prothorax. Abdo- men with the basal segment alone impressed ; second longer than the first or third ; fifth longer than the fourth. Mesosternal pro- cess acute, extending slightly beyond the middle of the coxiB, the latter contiguous, with the acetabula apparently shallow and ill- defined. Metasternum ample ; the episterna parallel; epimera not extending beyond the elytra, moderate, the suture almost obsolete, disappearing under the elytra behind the middle. Legs short; tibiae moderate, pubescent ; tarsi short, 4-5-5-jointed, the basal joint of Coleopterological Notices, V. 335 the posterior very short, three-fourths as long as the second ; fifth fully as long as the two preceding; ungues small, arcuate, simple. The anterior tarsi seem at first sight to be five-jointed, which would place this singular genus among the Oxypodates of Rey, where its very short basal joint of the hind tarsi would completely isolate it. There can be but little doubt, however, that the appa- rent fourth joint of the anterior tarsus is rigidly connected with the fifth, of which it forms the troublesome basal node, and that Eury- pronota is more appropriately placed in the vicinity of Colpodota, from which it is readily distinguishable by its very large prothorax and short basal joint of the tarsi. E. discreta h. sp. — Black, the pronotum, elytra, legs and antemise toward base pale testaceous ; integuments polished, sparsely pubescent, the abdomen bristling with long setae toward apex. Head wider than long, eub- orbicular, three-fifths as wide as the prothorax, finely, sparsely punctate ; antennae nearly one-half as long as the body, joints five to eleven equal in width. Prothorax large, transversely subelliptical in form, nearly one-half wider than long, the base broadly, evenly arcuate, nearly continuous in cur- vature with the sides ; apex truncate, the angles very obtuse and rounded ; disk evenly, broadly convex, with feeble trace of a fine longitudinal impressed line toward the middle, finely feebly and sparsely punctate. Elytra more closely and strongly punctate, transverse, parallel, broadly eniarginate at base, much narrower than the prothorax and with the suture scarcely more than three-fourths as long as the latter. Abdomen as long as the anterior parts, as wide as the elytra, parallel, feebly narrowed toward apex, finely, very sparsely punctate, more closely so toward base ; border moderate. Length 1.7-1.9 mm.; width 0.45-0.5 mm. Iowa (Cedar Rapids). Dr. E. Brendel, Readily recognizable by the very large prothorax, which is visibly larger in the male than in the female. The European Colpodota fuvgi Grav., possesses some structural features nearly similar to those of the present species, the pronotum for example being trans- versely subelliptical, with nearly obsolete hind angles, but the basal joint of the hind tarsi is much longer, the prothorax not wider than the elytra, and the fourth and fifth abdominal segments equal. E. SCOpula n. sp. — Moderately slender and convex, pale flavo-testaeeous, the head black ; elytra slightly less pale and more brownish ; abdomen with a blackish spot occupying the fourth segment more or less ; integuments shin- ing, finely subasperately and closely punctate, the head a little more spai'sely and the elytra rather more densely and strongly than the pronotum; abdo- men moderately closely punctate ; pubescence dense, moderately long, even and erect, longer sparser and decumbent on the abdomen, the latter bristling 336 Coleopterological Notices, V. with long black sparse sets toward tip. Head wider than long, three-fifths as wide as the prothorax ; eyes moderate, at their own length from the protho- rax ; infralateral carina tine and entire ; antennae slender, feebly incrassate, as long as the prothorax and elytra, bristling with long sparse setse, first joint a little longer and thicker than the second, the latter slightly longer than the third, which is nearly twice as long as wide, four to ten feebly obconical. the latter slightly wider tlian long, eleventh ogival, as long as the two preceding. Prothorax large, three fourths wider than long, widest at basal third, the sides broadly arcuate, gradually convergent toward apex ; base slightly wider than the apex, both broadly arcuate; basal angles obtuse and rounded but not obliterated ; disk evenly convex, without trace of impression. Elytra as long as the prothorax and distinctly narrower, one-half wider than long ; sides very feebly divergent from the base, scarcely visibly arcuate; disk slightly impressed on the suture behind the scutellum. Abdomen a little longer than the anterior parts, slightly narrower than the elytra; sides subparallel, becom- ing gradually convergent behind ; first segment impressed at base, the second feebly, the third unimpressed ; fifth a little longer than the fourth. Length 1.6 mm.; width 0.4mm. Rhode Island (Boston Neck). This species is apparently congeneric with the preceding, although the vestiture is erect and not decumbent, and the posterior tarsi shorter, with the two basal joints subequal in length. COLPOSURA n. gen. Body narrow, elongate, rather convex, with a somewhat pro- nounced longitudinal development of abdomen. Head triangular, widest behind, not inserted, borne on a distinct but somewhat wide and very short neck, the base nearly in contact with the pronotun) throughout ; eyes moderate ; infralateral carina completely want- ing. Antennae rather short, very feebly incrassate, the three basal joints more or less elongate. Gular sutures straight, convergent from the base nearly to the support of the mentum, then divergent to the sides of the buccal opening. Mentum small, transversely trapezoidal, truncate. Ligula with a small rounded thick median lobe, apparently perfectly simple, the labial palpi three-jointed, with the middle joint shortest. Maxillary palpi with the second joint rather small, slender, the third much longer, thicker, oval, con- stricted at base ; fourth small, subulate. Prothorax parallel, the hypomera moderately inflexed, partially visible from the side. Elytra well developed. Abdomen long, the first tergite rather Avidely but feebly, the second and third narrowly and obsoletely, impressed at base, the fifth much longer than the fourth ; sixth Coleopterological Notices, V. 33 T segment large and greatly exposed, the ventral plate folded over dorsally for an unusually great distance ; seventh with rather com- plex lateral lobes. Coxae moderate in size, the intermediate large, approximate but not contiguous, the mesosternal process short and broadly triangular, advancing for one-half their length, the point free, extremely fine and attenuate. Metasternum ample, not pro- duced at all between the coxae, there being simply a very feeble arcuation opposite the coxal opening, the space thence to the meso- sternum transversely convex. Legs short; tibiae rather slender; tarsi 4-5-5-jointed, the posterior distinctly shorter than the tibite, with the first joint moderately elongate, the first four decreasing distinctly and uniformly in length ; ungues small, arcuate and simple. The general structure of this genus allies it intimately with Amischa Thoms., from which it differs in the more elongate abdominal segments, much more developed sixth segment, and, especially, in the structure of the metasternum between the middle coxje, which in Amischa is produced and acute. It is confined apparently to the arid mountain regions of the west. The three species described below may be thus distinguished among them- selves : — Elytral suture not in the least longer than the pronotum. Head at base but slightly narrower than the pronotum praeloilga Head scarcely two-thirds as wide as the pronotum pa.rviceps Elytral suture slightly longer than the pronotum angtista. In reality only the first of these species can be regarded as the type of Colposura, parviceps and angusta having the metasternum finely produced between the coxae ; these therefore are much closer still to Amischa. I have attached them provisionally to Colpo- sura, however, because of their general resemblance to 2^^'^ioj}ga, and because they differ from Amischa in their absolutely contigu- ous middle coxae and more elongate ventral segments. C. praelonga n. sp. — Narrow, parallel, pale ochreous-yellow throughout, the head piceous ; first five tergites blackish except at apex ; anterior parts finely reticulate, moderately shining, finely, feebly, rather closely but almost imperceptibly punctate, the abdomen more shining, coarsely but feebly, sub- imbricately sculptured; pubescence throughout fine short and decumbent. Head triangular, not quite as long as wide, the neck scarcely two-fifths as wide as the subbasal width, the latter but slightly, though distinctly, less than the prothorax ; base subtruncate ; basal angles rather narrowly rounded ; sides 338 Coleopterological Notices, V. thence convergent, the eyes at one-half more than tlieir own length from the base ; antennae very slightly longer than the head and prothorax, cylindrical, rather slender and loose, the first two joints elongate, subequal, the third shorter, obconical, strongly constricted at base and longer than wide, fourth wider, slightly transverse, five to ten still a little wider, equal, moderately transverse, eleventh suboval, barely as long as tlie two preceding, the apex obliquely obtuse and asymmetrically pointed. Prothorax one-third wider than long ; sides parallel, feebly, evenly arcuate ;' apical angles rounded ; apex strongly oblique to the neck ; basal angles very obtuse and blunt ; base broadly arcuate ; disk feebly convex, with a rather large and feeble impres- sion in the middle before the base. Elytra slightly transverse, just percepti- bly wider and longer than the prothorax ; sides subparallel ; humeri scarcely at all exposed ; disk transversely, feebly convex, not impressed. Abdomen much longer than the anterior parts, very slightly narrower than the elytra ; sides perfectly parallel and straight to the apex of the fifth segment, the latter as densely sculptured as the others. Length (abdomen strongly exserted) 2.8 mm. ; width 0.4 mm, Wyoming (Cheyenne). Mr. H. F. Wickham. The antebasal abdominal tergite is exserted, corneous and well developed in this species. A single specimen, probably the female, the anal segment having an ogival median lobe and quite complex lateral alse, C. parviceps n. sp. — Slender, dark brown, the head and abdomen blackish except at the apices of the segments ; antennae toward base and legs pale ; anterior parts densely reticulate and feebly shining, the head and pro- notum rather densely but feebly and indistinctly punctate, the elytra more distinctly but finely, very densely, granularly punctate ; abdomen more shin- ing, closely, imbricately pianctate ; pubescence very short, fine, rather dense. Head small, as long as wide, two-thirds as wide as the prothorax, widest at base, the neck deeply, acutely constricted across the dorsal surface at the base of the occiput ; eyes before the middle ; antennae scarcely longer than the head and prothorax, the third joint scarcely perceptibly shorter than the second, evenly, strongly obconical, twice as long as wide, outer joints scarcely increasing in width, loosely connected, distinctly transverse, eleventh sub- quadrate, as long as the two preceding, obliquely, asymmetrically acuminate at apex. Prothorax one-half wider than long ; sides subparallel, broadly evenly and feebly arcuate ; base broadly arcuate, rather wider thaai the apex ; basal angles distinct but rounded ; disk broadly, strongly convex, broadly flattened in the middle toward base, just before which there is a distinct sub- transverse impression. Elytra wider than long, just visibly wider and slightly longer than the prothorax ; humeri not exposed at base. Abdomen much longer than the anterior parts, distinctly narrower than the elytra ; sides straight and parallel to the apex of the fifth segment. Posterior tarsi very slender, only slightly shorter than the tibiee. Length 2,4 mm. ; width 0.5 mm. Coleopterological Notices, V. 339 Washington State (Spokane). Mr. Wickhara. Distinguishable readily from the preceding by its broader form, more transverse prothorax, smaller and slightly less triangular head, relatively longer third antennal joint, and darker color. The type seems to be a female, and the sixth segment is, on the median line, very nearly as long as the fifth. C. angusta n. sp. — Slender, dark brown, the head and abdomen darker except at the apices of the segments ; legs and antennse pale, the latter slightly infuscate toward tip ; anterior parts finely, densely reticulate and somewhat dull, the head and pronotum finely and very indistinctly punctulate, the elytra more distinctly but still very finely and densely so ; abdomen oniformly and closely, imbricately sculptured throughout, more shining ; pubescence fine, short and close, less dense on the abdomen. Head nearly as long as wide, only slightly but distinctly narrower than the prothorax, gradually narrowed anteriorly from the rounded basal angles, the neck only feebly constricted at the base of the occiput ; eyes before the middle ; antennje distinctly longer than the head and prothorax, in structure similar to the preceding species, the third joint scarcely visibly shorter than the second, outer joints equal in width, distinctly transverse. Prothorax one-third wider than long ; sides parallel, broadly, feebly, evenly arcuate ; base broadly arcuate, equal in width to the apex ; basal angles distinct but rounded ; disk convex, not flattened in the middle, but witli a deep transversely oval impression before the base. Elytra scarcely visibly wider but distinctly longer than the pro- thorax, wider than long, the sides nearly parallel and straight ; humeri obliquely, feebly rounded, not exposed at base ; disk feebly impressed behind the scutellum. Abdomen much longer than the anterior parts, distinctly narrower than the elytra, the sides parallel and straight. Length 2.0 mm. ; width 0.4 mm. Nevada (Elko). Mr. Wickham. This species is smaller than the others and the elytra are longer, the antennae are also more elongate. TRICHILSA n. gen. Body stout, compact, convex, bristling with long sparse hairs. Head rather small, deflexed, the eyes well developed, at their own length from the base ; labrum transverse, truncate with rounded angles. Mandibles moderate, the apices very slender and extremely acute, simple. Infralateral carina obsolete. Antennae incrassate, bristling with very long setae, the basal joint thicker and very much longer than the second, the latter distinctly larger and longer than the third, both the latter constricted at base ; four to ten gradually wider, transverse j tenth nearly twice as wide as loogj eleventh 340 Coleopterological Notices, V. very obtuse, barely as long as the two preceding ; outer joints somewhat distant and perfoliate. Mentum ample, trapezoidal, truncate. Maxillary palpi with the third joint very much longer and thicker than the second; fourth small, very slender, oblique. Ligula with two minute and subparallel slender processes descend- ing subvertically from the apex, also with two long setae ; labial palpi distinctly three-jointed, the first stouter and much longer than the second ; third slender, nearly as long as the first two. Protho- rax rather small, transverse, the hypomera strongly iflflexed but in part visible from the side. Elytra wide, well developed, transverse. Abdomen broad, parallel, the first three dorsals narrowly and deeply impressed at base, fourth and fifth equal. Middle coxas very widely separated, the mesosternal process scarcely more than one-third as wide as the interval separating them, gradually, feebly deflexed, abruptly and obtusely pointed or narrowly rounded at apex, ex- tending through three-fourths of the coxal length, with its apex superposed upon the broadly rounded apex of the very short and wide metasternal process. Metasternum well developed, the side- pieces parallel, the epimera projecting slightly behind the elytra. Legs short but slender, the tarsi short, slender, distinctly 4-5-5- jointed, the four basal joints of the posterior equal, the fifth longer than the preceding two combined ; ungues rather long, slender, feebly arcuate. The wide vacant space separating the middle coxee from the sides of the mesosternal process is probably a constant feature. This genus belongs near Hoplandria, from which it differs in habitus, in the parallel sides and distinct basal angles of the prothorax, much longer antennae with a longer basal joint, entire absence of the terminal appendage of the fourth palpal joint, and, especially, in the form of the ligula, which in Hoplandria has a long slender almost simple terminal process ; it also differs in its narrow, obtusely pointed mesosternal process and parallel abdomen. Several of the South and Central American species described under the name Brachida, will probably have to be referred to Trichiusa ; in fact the tuberculate external apical angles of the elytra in Brachida batesi Shp., points almost unmistakably to a relationship with Hoplandria.' In the European representative of ^ In this connection the small tubercles near the inner apical angles of the elytra in Brachida notha are remarkable, in view of the four-jointed middle tar.si. CoUopterological Notices, V. 341 Brachida notha before me, the middle tarsi are clearly four-jointed, but they are equally plainly five-jointed in Trichiusa, and the two genera differ completely in the form and relations of the intermeso- coxal sclerites. Although most closely allied to Hoplandria, the species of Tri- chiusa bear a striking resemblance to Gyrophaena, having the same stout compact form, but may be known by the long hirsute vesti- ture and the distinctly five-jointed middle tarsi. Of the following five species, the first is to be considered the type; they are however all congeneric: — Aiiteinise strongly incrassate and stout from the fourth joint, which is strongly transverse COIupacta Anteiinffi not so thick, more gradually and feebly incrassate, the fouilh joint subglobular and only slightly transverse. Body black throughout. Prothorax at base nearly as wide as the elytra, the humeri scarcely at all exposed. Deflexed apical angles of the prothorax obtuse but only very narrowly rounded ; elytral vestiture shorter, coarser and subdeeumbent, a few long erect setae bristling along the sides of the body setigera Deflexed apical angles rounded ; vestiture throughout the body con- sisting of long equal closely placed and erect hairs, without longer bristling setse along the sides pilosa Prothorax at base narrower than the elytra, the humeri distinctly ex- posed ; vestiture rather long but decumbent ; lateral setae subobsolete. robustula Body pale rufo-testaceoua throughout, with a small pieeous spot toward the middle of the fourth tergite ; prothorax small ; humeri broadly exposed ; vestiture very long, sparse bat shaggy parTicollis The species appear to be rather numerous, and others are perhaps known at present in cabinets. T. COmpacta n. sp. — Stout, subparallel, convex, shining, the elytra polished, black, the antennae toward base, elytra, apical parts of the first three tergites and legs paler, rufo-testaceous ; head and pronotum very minutely sparsely punctate, the former with some larger punctures, the latter with a few scattered large punctures toward base ; elytra rather coarsely, sparsely and somewhat irregularly punctured ; abdomen sparsely, minutely granulato-punctate, the impressed parts subimpunctate ; pubescence rather long, sparse and coarse. Head three-fourths as wide as the protliorax, wider than long, with a feeble central impression, the antennae longer than the prothorax and elytra, strongly incrassate. Prothorax a little less than twice as wide as long ; sides subparallel, arcuate ; base and apex broadly, strongly arcuate ; apical angles moderately deflexed, broadly rounded ; basal 342 Coleopterological Notices, V. obtuse but distinct, not blunt; disk strongly convex, finely beaded at tbe sides and base, very obsoletely impressed in the middle before the base. Elytra much wider than long, one-fourth wider and two-fifths longer than the prothorax ; sides parallel, feebly arcuate ; humeri slightly exposed. Abdomen longer than the anterior parts, very nearly as wide as the elytra ; sides parallel, just visibly arcuate ; border moderate ; under surface densely, coarsely fulvo- pubesceut. Legs clothed sparsely with long hairs, the upper sides of the femora and trochanters polished, impunctate and glabrous. Length 2.0 mm. ; width 0.7 mm. ^ District of Columbia. One of the three specimens has the pronotum also rufous, and another has the pronotum and elytra black ; this latter specimen has the prothorax somewhat smaller, the elytra fully one-third wider than that part, and with longer, more erect pubescence. It is probably a variable species, with considerable sexual disparity also, although the sexual marks at the apex of the venter are appa- rently very feeble, and there are none on the tergum in the examples before me. T. setigera n. sp. — Moderately stout and convex, thick, subparallel, blaik, the legs and antennae toward base pale, flavescent ; integuments feebly reticulate throughout but polished, the head and pronotum finely, sparsely punctate, the elytra more strongly but simply and not very densely so, the abdomen sparsely and asperately ; pubescence long and conspicuous. Head wider than long, only slightly but distinctly narrower than the prothorax ; eyes rather prominent ; tempora equal to them in length and feebly convergent and arcuate to the base ; surface flattened ; antennse strongly setose, feebly, gradually incrassate, about attaining basal third of the elytra, the first joint much longer than the second, the latter thicker and a little longer than the third, fourth slightly wider than long, subquadrate, tenth twice as wide as the fourth and rather strongly transverse. Prothorax transversely subrect- angular, nearly two-thirds wider than long; sides parallel, broadly arcuate; base and apex subequal, broadly, strongly arcuate ; basal angles slightly obtuse and distinct ; disk strongly, evenly convex, very feebly impressed in the middle toward base. Elytra transverse, about one-fourth wider and nearly one-half longer than the prothorax ; sides quite perceptibly divergent from the base ; disk feebly convex. Abdomen, at the middle, as wide as the elytra, but at base distinctly narrower, a little longer than the anterior parts; sides parallel and arcuate ; segments short, transverse, all equal in length, the first three strongly, subequally impressed at base ; border strong. Length 1.65 mm. ; width 0.6 mm. New Jersey. Smaller and rather more slender than compacta, to which it is perhai)s most strongly allied, and with strikingly different autennal structure. Coleopferological Notices, V. 343 T. pilosa. n. sp. — Snboval, convex, polished, black throughout ; legs and antennfe toward base pale ; integuments finely, rather strongly reticulate throughout ; head and pronotum subimpunctate ; elytra finely, very feebly, rather closely so, the abdomen finely, very sparsely and granularly ; pubes- cence even in length, long, erect, moderately dense, conspicuous. Head nearly as long as wide, small, not more than two- thirds as wide as the prothorax ; eyes prominent ; tempora longer than the eye, feebly convergent and straight behind them, rounded at base ; surface broadly, strongly impressed in the middle ; antennje stout, bristling, but slightly longer than the head and pro- thorax, the first joint distinctly longer than the second, the latter much longer than the third, which is scarcely at all longer than wide, constricted at base, fourth a little wider than long, four to six differing but little, seven to ten larger, more pubescent, increasing more rapidly in width, tenth about twice as wide as long, eleventh scarcely as long as the two preceding. Prothorax fully two-thirds wider than long, sides strongly convergent and arcuate from base to apex ; base very much wider than the apex, both strongly arcuate ; basal angles very obtuse but distinct ; disk strongly convex, with three ex- tremely obsolete parallel median longitudinal impressions, and a very obsolete transverse impression before the base. Elytra wider than long, one-third wider and nearly one-half longer than the prothorax ; sides perceptibly divergent from the base and broadly arcuate ; disk impressed behind the scutellum. Abdomen in the middle as wide as the elytra, at base very slightly narrower, as long as the anterior parts. Length 1.4 mm. ; width 0.5 mm. Rhode Island (Boston Neck). A very interesting species, wholly different from the preceding in the form of the prothorax, and from robustula in its narrower form, erect hirsute vestiture and other structural characters. Two specimens. The impressions of the pronotum are extremely feeble, and join the transverse subbasal impression ; in one of the specimens the longitudinal impressions are obsolete, and at best they can be only faintly seen. T. ro1)IIstula n. sp. — Rather stout and convex, suboval, black, the legs and antennje toward base pale ; integuments densely and strongly reticulate and alutaceous, the head and abdomen less strongly so and shining ; head subimpunctate ; pronotum very minutely and feebly so, the elytra more strongly densely and subasperately but still very finely, the abdomen sparsely, extremely finely and subasperately; pubescence rather long, decumbent, con- spicuous, ashy in color, very sparse on the head and abdomen. Head rather small, convex, impressed in the centre, scarcely three-fourths as wide as the prothorax, wider than long ; eyes at somewhat more than their own length from the base, not very prominent, the tempora perfectly parallel and straight behind them, then broadly rounded to the base ; antennse attaining basal third of the elytra, the basal joint longer than the second, the latter as long as the next two, fourth slightly wider than long, outer joints gradually 344 Coleopterological Notices, V. strougly transverse and perfoliate. Prothorax transversely oval, three-fourths wider than long, the sides rounded and convergent anteriorly, becoming par- allel and nearly straight in basal half; base slightly but distinctlj' wider than the apex, both strongly arcuate ; basal angles obtuse and blunt ; disk strongly convex, the median line feebly impressed and with a feeble transverse impres- sion before the base. Elytra transverse, nearly one-half wider and two-fifths longer than the prothorax ; sides slightly divergent and arcuate from the humeri, the latter narrowly rounded, rather broadly exnpsed at base ; disk convex, very broadly, feebly impressed near the scutellum.* Abdomen short, when moderately contracted not as long as the anterior parts, as wide as the elytra; border rather strong and thick. Length 1.35 mm.; width 0.55 mm. Iowa (Cedar Rapids). Dr. E. Brendel. The large series before me exhibits scarcely any variation, even in size. A specimen which I took at Galveston, Texas, differs but very slightly and is probably conspecific. T. pai'Ticollis n. sp. — Oblong, convex, pale rufo-testaceous throughout, with the exception of a small piceous cloud on the fourth tergite ; integuments strongly shining, the head and pronotum subimpunctate, the elytra very minutely, rather closely but scarcely distinguishably, the abdomen minutely, rather closely and subasperately ; vestiture long, erect, ashy and bristling from every part of the body. Head wider than long, strongly imj^ressed in the centre, fully three-fourths as wide as the prothorax, the eyes rather large, at scarcely more than their own length from the base ; tempora feebly con- vergent and arcuate behind them to the very broad neck ; antennae longer, unusually slender, extending to the middle of the elytra, the first joint longer than the second, the latter scarcely longer but thicker than the third, four to six moniliform, subglobular, nearly similar, seven to ten very slightly increas- ing in width, the tenth slightly transverse, eleventh small, ovoidal, obtusely acuminate, only one-half longer than the tenth. Prothorax small, transverse, three-fifths wider than long, the sides strongly convergent, evenly and moder- ately arcuate from base to apex ; base much broader and more strongly arcuate than the apex ; basal angles obtuse and blunt ; disk strongly convex, feebly impressed along the median line toward base only. Elytra strongly transverse, three-fifths wider and two-fifths longer than the prothorax ; sides but feebly divergent and slightly arcuate from the humeri, which are right, scarcely rounded and broadly, transversely exposed at base. Abdomen scarcely as long as the anterior parts, in the middle as wide as the elytra, but at base distinctly narrower ; sides parallel and arcuate ; border thick ; posterior margins of tergites three and four broadly, feebly sinuate in circular arc throughout the width ; fifth distinctly longer than the fourth, transverse at apex. Posterior tarsi two-thirds as long as the tibiae, the first four joints equal, the fifth as long as the preceding two. Length 1.7 mm. ; width 0.65 mm. Delaware. This species is somewhat aberrant in its longer, more slender and less incrassate antennae, and longer fifth ventral segment. It is Coleopterological Notices, V. 3i5 liowever congeneric without doubt. A single specimen of undeter- mined sex. PLATA\DKI.4 n. gen. Body rather broad, fusiform. Head well inserted, not constricted at base, the eyes large, oval ; infralateral carina strong, entire. Antennae rather short, slender, becoming gradually strongly incras- sate in apical half. Mentum rather large, transversely trapezoidal, broadly sinuato-truncate at apex. Ligula with a slender process which is deeply forked at apex, each lobe bearing at its apex a slender flexible and attenuate appendage. Labial palpi three-jointed, the basal joint thick, long, cylindrical, obliquely truncate at apex ; third slender, with a terminal appendage. Maxillary palpi well developed, the third joint slightly longer than the second, the fourth long and distinct, with a slender supplementary appendage. Pro- thorax nearly as in Hoplandria, the h^^poraera strongly inflexed and invisible from the side. Elytra well developed. Abdomen gradu- ally narrowed from the base; border strong, the two basal tergites strongly but rather narrowly impressed at base, the third finely and very feebly so ; fifth much longer than the fourth ; sixth distinct and wide. Middle coxte large, oblique, deeply inserted, narrowly separated, the mesosterual process very long and acutely attenuate, extending very nearly to the tips of the coxae, with its apex free and overlapping the apex of the rather short but acute raetasternal process. Metasternum large, the parapleurae moderately wide, per- fectly parallel, the epimera extending scarcely at all behind the elytra. Legs moderate in length, the tibiae slender; tarsi long, slender, 4-5-5-joiuted, the posterior very nearly as long as the tibiae, with the basal joint elongate, the first four decreasing rapidly in length, the fifth somewhat longer and much more slender than the first; ungues moderately long, slender, rather strongly arcuate and divaricate. . The paraglossae are not distinct in the type and appear to be much less developed than in Hoplandria and Platonica, with which this genus is to be associated. It differs from the first in the form of the ligula and structure of the tarsi, and from the latter altogether in the structure of the mesocoxal sclerites. In Hoiolandria ochracea the process of the ligula is long and slender, perfectly cylindrical, but bearing at its extreme tip two very minute subparallel and apparently setiform appendages, almost exactly as in the Americaa species of Echidnoglossa. Aknals N. Y. Acad. Sci., VII, Oct. 1893.— 23 346 Coleopterological Notices, V. P. mormonica n. sp. — Rather broad, somewhat shining, the ahdomen polished, dark rufo-piceous in color, the abdomen black throughout ; legs dark, rufescent ; antennae black, pale toward base ; head and pronotum minutely, not densely, evenly punctate, the elytra hardly less minutely and rather more sparsely, but more distinctly so ; abdomen finely, evenly, somewhat closely punctate throughout, and with somewhat well-marked imbricate sculpture ; pubescence short, subrecumbent, rather dense but not conspicuous, longer and sparser on the abdomen. Head small, nearly as Song as wide, slightly more than one-half as wide as the prothorax, the eyes at about one-half of their length from the base ; antennae about as long as the head and prothorax, the first three joints subequal in length, the first stouter, cylindrical, third one-half longer than the fourth which is distinctly longer than wide, fifth subquadrate, joints five to ten gradually and rapidly broader, the tenth twice as wide as long, eleventh as long as the two preceding, moderately pointed at apex. P)-othorax three-fourths wider than long, the sides rounded and parallel near the base, then strongly convergent and nearly straight to the apex ; basal angles very obtuse and blunt ; base broadly evenly and strongly arcuate, much wider than the subtruncate apex : disk strongly convex, perfectly even, unimpressed. Elytra two-fifths wider than long, at apex about one-fifth wider than the prothorax, nearly one-half longer than the latter : humeri obliquely, feebly rounded externally ; disk broadly, indefinitely impressed behind the scutellum. Abdomen at base quite distinctly narrower than the elytra, much longer than the anterior parts. Length 2.7 mm. ; width 0.8 mm. Utah (Provo). Mr. H. F. Wickhara. The single type before me is a male, having a long distinct carina on the fifth tergite and another, only slightly shorter, on the sixth; elytral angles and second segment not in the least modified. GNYPETA Thorns. A genus allied to Tachyusa and comprising but few species at present. G. atrollicens n. sp. — Polished, intense black, throughout; base and apex of the tibiae and tarsi paler ; antennae not paler at base ; pubescence not very dense, short, stiff, erect, pale brown in color and not conspicuous. Bead slightly wider than long, finely, sparsely punctate, the vertex broadly, feebly impressed in the middle; eyes large, somewhat convex, setose, at less than their own length from the base ; tempora broadly rounded at base to the very wide neck ; antennae long, slender, feebly incrassate, nearly two-fifths as long as the body. Prothorax about one-third wider than long, widest at apical third where the sides are narrowly rounded and somewhat prominent, thence feebly convergent and distinctly sinuate to the basal angles, the latter obtuse but not rounded ; base broadly arcuate, wider than the apex ; disk convex, feebly impressed in a transversely oval discal area before the scutellum. Elytra nearly one-half wider and longer than the prothorax, moderately trans- Coleopferological Notices, V. 347 verse, parallel, each broadly feebly and obliquely sigmoid at apex ; humeri broadly exposed and transverse at base; disk minutely, feebly punctate like the pronotum, broadly impressed behind the scutellum. Abdomen parallel, slightly longer than the anterior parts, much narrower than the elytra, rather wider than the prothorax, finely, feebly, almost evenly, not densely punctate, the transverse impressions of the three basal segments equal, strong, coarsely but very sparsely punctate ; border thick, not very deep. Legs rather long and slender, the tarsi moderate in length. Length 2.6 mm. ; width 0.75 mm. New York. Closely resembles the European carbonaria Mann., but differs in its relatively larger head and smaller prothorax, much more widely exposed elytral humeri and shorter, much less conspicuous pubes- cence. AJfEUROTA n. gen. Body linear and rather depressed. Head large, transverse at base, feebly sinuate in the middle, borne on an extremely short, narrow neck which is less than one-fourth as wide as the base; eyes large, feebly convex, before the middle ; tempora long, parallel, feebly arcuate. Antennae widely separated, feebly incrassate, the second joint nearly as long as the next two; third strongly obconi- cal, nearly twice as long as wide; tenth slightly wider than long. Labrum short, truncate. Infralateral carina completely obsolete ; gular sutures distant, parallel. Mentum very short, strongly trans- verse, trapezoidal, deeply sinuate at apex, the sinus filled with a transparent hypoglottis. Maxillary palpi rather small and slender, the fourth joint minute, oblique. Ligula not distinct, the labial palpi very small, apparently three-jointed. Prothorax small, cordi- form, the flanks feebly inflexed and not separated by a fine line; base finely and distinctly margined, the basal angles sharply defined. Elytra well developed. Abdomen much shorter than the anterior parts, the sides straight and almost imperceptibly divergent from base to apex ; first three segments deeply impressed and impunctate at base ; fourth and fifth equal and a little longer, unimpressed, Prosternum moderately developed before the coxse. Middle coxae separated by one-third of their width, the acetabula deep and well- defined ; mesosternal process narrowly truncate and extending slightly beyond the middle. Legs short but rather slender ; tarsi 4-5-5-jointed, the posterior distinctly shorter than the tibiae, Avith the basal joint moderate, not longer than the next two. The type of this genus is a minute species having a peculiar 348 Coleopterological Notices, V. linear depressed form. It is allied to Cardiola, but differs in its parallel form, in the more elongate second antennal joint, more prolonged mesosternal process, shorter basal joint of the hind tarsi, and in having a fine distinct basal margin of the pronotum with well-defined basal angles. It resembles Cardiola in the absence of a dividing line between the pronotum and its infl%xed flanks. A. SlllcifroilS n. sp. — Polished, piceous-black, the aiitennje concolorons tlirougliout ; elytra and legs dark piceous-brown ; punctures very minute sparse and snbgraniiliform, except on the abdomen, where they are a little larger, more distinct and nearly simple or slightly asperate ; pubescence fine and sparse but rather long and distinct. Head slightly longer and much wider than the prothorax, the eyes at one-half more than their own length from the base ; antennae about as long as the head and prothorax; surface with a coarse deeply excavated groove extending from the apical margin hehind the middle, there becoming finer to the base. Prothorax fully as long as wide, widest at apical fourth where the sides are \>iTy strongly rounded, thence extremely oblique to the neck and distinctly convergent and nearly straight to the base, the latter truncate; disk transversely convex, with a deep median sulcus extending from base to apex. Elytra about as large as the head, distinctly wider and longer than the prothorax, subquadrate, parallel and straight at the sides ; humeri broadly exposed at base ; disk flat, narrowly impressed along the suture. Abdomen at base distinctly narrower than the elytra, but, at apex, subequal in width ; border thin, nearly vertical. Length 1.4 mm.; width 0.3 mm. Florida. The deep sulcus of the front may be a sexual peculiarity, in part at least. BOLITOCHARIDES. Antennse 11-Jointed ; tarsi 4-4-5-jointed. APHELOGLOSSA n. gen. Body elongate, subparallel and subdepressed. Head rather large, transverse, narrowed toward base but scarcely constricted, the eyes rather large, convex, setose and prominent, at less than their own length from the base; infralateral carina feebly traceable, inter- rupted and nearly obsolete, antennae rather long, thick, feebly incras- sate, finely pubescent, bristling with long sparse setae, the basal joint thicker and much longer than the second or third, the latter equal, elongate ; fourth subquadrate ; tenth one-third wider than long ; eleventh ogival, as long as the two preceding. Mentum Coleopterological Notices, V. 349 larp^e, feebly transverse, trapezoidal, broadly impressed laterally, the apex strongly emarginate throughout the width. Ligula appa- rently with a small acuminate apical process; labial palpi very long, two-jointed, the second about twice as long as the first, slen- der, somewhat contorted toward apex. Maxillary palpi normal. Prothorax subparallel, the sides feebly convergent toward base, and, viewed sublaterally, broadly, strongly sinuate before the basal angles; hypomera feebly indexed, broadly visible from the side, entire, broad behind. Elytra well developed, parallel. Abdomen parallel, the first three segments impressed at base, the fourth and fifth equal. Anterior coxae moderate; intermediate widely sepa- rated, the mesosternal process extending to the middle, flat, broadly rounded at apex, the latter slightly superposed on the tip of the broad metasternal process ; acetabula deep, sharply defined, Meta- sternum large and long, the side pieces moderate in width, parallel. Legs rather short ; tibias clothed densely and evenly with short stiff inclined setae, with a very long black seta j'ust behind the middle and another near the tip externally; tarsi 4-4-5 jointed, slender, the last joint of the anterior and intermediate much longer than the basal three; posterior much shorter than the tibiae, but very slender, the four basal joints exactly equal, fifth very long but distinctly shorter than the first four together ; claws very long, slender, feebly arcuate. This genus appears to be allied to the European Diestota, but differs in the subobsolete infralateral carina of the head, longer, less incrassate antennae, emarginate mentum, more developed proster- nura and longer terminal joint of the tarsi. Diedota funebi'ia Shp., will probably have to be referred to Apheloglossa. A. rilfipennis n. sp. — Subparallel, black, basal parts of the aiiteniije and legs throughout dark rufb-testaceous ; elytra rufous, clouded with blackish in a broad subtriangular basal area and externally toward apex ; head and pronotura minutely, strongly granulato-reticulate and perfectly opaque, finely, closely but almost imperceptibly punctate ; elytra finely reticulate, more aluta- eeous, minutely, very densely, subasperately but not very plainly punctate, the abdomen shining, finely, closely, distinctly punctate, more sparsely toward tip ; pubescence anteriorly short, suberect, dense but not conspicuous, still denser on the elytra, longer but sparse on the abdomen. Head transverse, fully four-fifths as wide as the prothorax ; antennae nearly as long as the pro- thorax and elytra together, very widely distant at base. Prothorax transverse, three-fifths wider thau long, the sides from above subparallel, broadly, evenly arcuate ; apex truncate, just visibly narrower than the base, the apical angles obtuse but distinct from above ; base broadly, feebly arcuate ; basal angles 350 Coleopterological Notices, V. obtuse but very distinct, not in the least blunt ; disk even, unimpressed, feebly convex. Elytra transverse, nearly one-third wider and one-half longer than the prothorax ; sides parallel, feebly arcuate ; humeri broadly exposed at base; disk flattened, very feebly, broadly impressed on the suture toward base. Abdomen distinctly longer than the anterior parts, jnuch narrower than the elytra ; sides parallel, nearly straight ; border thick ; under surface finely, densely punctate and densely clothed with long decumbent pubescence. Posterior tarsi three-fourths as long as the tibiae. Length 3.3-3.6 mm. ; width 0.85 mm. Arizona (Benson). Mr. G. W. Dunn. The general appearance of this insect suggests a community of habit with the large Maseocbarae of the same regions. PLACIJSA Erichs. The following species perfectly resembles the European compla- nata, but is narrower, with shorter antennae, and denser and still more obscure sculpture. P. taconiae n. sp. — Oblong-elongate, strongly depressed, black through- out, the legs and antennfe piceous, the elytra frequently paler ; integuments extremely dull opaque and minutely, densely grauulato-reticnlate, the elytra rather less opaque, the abdomen shining ; head and pronptum very minutely, extremely densely and almost undistinguishably punctate, the elytra rather less minutely, extremely densely and more visibly so, the abdomen distinctly but very densely punctate, more sparsely near the apex ; pubescence very minute and scarcely noticeable. Head large, wider than long, distinctly nar- rower than the prothorax, the surface flat ; antennse one-half longer than the head, the basal joint a little longer and thicker than the second, the latter longer and much thicker than the third, which is longer than wide and strongly constricted at base, four to ten very strongly transverse, seven to ten equal in width, about twice as wide as lohg, eleventh obtuse, as long as the preceding two. Prothorax twice as wide as long, the sides just visibly conver- gent from base to apex and broadly, strongly arcuate ; base broadly, strongly arcuate, becoming feebly sinuate near the basal angles, which are obtuse but well maiked ; disk not distinctly impress»^d. Elytra at base a little narrower, at apex somewhat broader, than the prothorax, about one-third longer ; sides Straight; humeri completely concealed at base; apex transversely truncate; disk flat. Abdomen distinctly longer than the anterior parts, evidently nar- rower than the elytra, the sides subparallel at base, becoming gradually con- vergent behind ; border rather thick, the first tergite very narrowly and feebly, the others not perceptibly, impressed at base ; fifth much longer than the fourth ; ante-basal infraelytral tergite corneous and frequently exserted. Legs short ; tarsi long, the posterior evidently shorter than the tibise, with the first joint about as long as the next two. Length 1.9 mm. ; width 0.7 mm. Coleopferological Notices, V. 351 Washington State (Spokane). The male fronj which the above description is taken, has the apex of the sixth termite prolonged in the middle in a short broad trun- cate ligula, and, between this and each side, there is a slender spine as long as the ligula, which is gradually and feebly bent toward the middle. This species was taken by Mr. Wickham, apparently in considerable numbers. P. complanafa is said by Mr. Fauvel to occur in Massachusetts ; among other differences it has the joints of the antennae much less transverse than tacomae. SILUSA Erichs. S« Tesperis n. sp. — Stout, subparallel, rather thick and convex, blackish, the elytra rather more rufo-piceous ; legs pale; aiitennje dark red-brown, paler toward base ; integuments strongly shining throughout, the abdomen liighly polished ; head and pronotum extremely finely and very sparsely punctate ; elytra strongly densely and subasperately punctate, the abdomen finely, sparsely so, almost impunctate toward apex ; pubescence rather coarse, not dense but distinct, very sparse on the abdomen. Head distinctly wider than long, scarcely four-fifths as wide as the prothorax ; eyes moderate, setose, at rather less than their length from the base ; antennae long and rather strongly' incrassate, finely pubescent and bristling with long erect setae, fully as long as the pronotum and elytra, second joint a little shorter than the third, the latter elongate but shorter than the first, fourth and fifth feebly obconical, the former a little longer than wide, the latter as wide as long, tenth about one-third wider than long, eleventh as long as the two preceding. Prothorax transverse, three-fifths wider than long, widest at the middle ; sides broadly arcuate anteriorly, feebly convergent and slightly sinuate toward base ; apex truncate, slightly narrower than the base, the latter broadly, distinctly arcuate, becoming straight or very feebly sinuate near the basal angles, which are obtuse but distinct ; disk broadly convex, with a small transverse impression in the middle near the base. Elytra nearly one-half wider than long, just visibly wider and distinctly longer tlian the prothorax ; sides parallel, very feebly arcuate ; humeri slightly rounded to the pronotum ; lateral apical sinuations strong ; disk feebly impressed along the suture. Abdomen at base slighty narrower than the elytra, as long as the anterior parts ; sides subparallel toward base, feebly convergent behind ; border rather thick ; first three tergites transversely impressed at base ; fourth and fifth equal in length. Legs moderate ; first joint of the hind tarsi slightly longer than the second, the fifth as long as the preceding three ; fourth joint of the intermediate rather longer than the other three together. Length 2.8 mm. ; width 0.85 mm. 352 Coleopterological Notices, V. California (Humboldt Co.). The labial palpi are very long and slender, composed apparently of two closely connected joints, forming an obtuse angle, the second about one-half longer than the first and feeblysacuminate toward tip. This species agrees tolerably well in form and size with rubi- ginosa, but the sides of the prothorax are more convergent and sinuate toward base, and the basal angles are much more pro- nounced ; the antennae, also, are longer, rather looser and more incrassate, Silusa gracilis Sachse, is a more slender parallel and less convex species, with the second joint of the labial palpi much shorter, not longer than the first, and somewhat claviform. I have specimens agreeing very well with the description from Pennsylvania and Iowa. The following is a species more nearly resembling gracilis, but much smaller still : — S. nannla n. sp. — Rather narrow, thick, siibparallel, moderately fin- ing, the head coarsely, very densely but inconspicuously punctate, the punc- tures round, very shallow, variolate and somewhat umbillcate ; pronotum reticulate, finely densely and granularly punctate ; elytra coarsely deeply and densely so, the punctures normal but giving a somewhat rugose appear- ance ; abdomen finely but strongly, granularly and rather densely punctured toward base; pubescence fine, suberect, dense but not conspicuous ; abdomen with long bristling pubescence toward apex, especially beneath ; color very dark red-brown, the abdomen feebly rufescent toward base, pale at tip ; legs pale flavate ; antennje dusky, the basal joints and also the eleventh paler. Head transverse, fully three-fourths as wide as the prothorax ; eyes moderately prominent, at tlieir own length from the base ; antennse short, feebly incras- sate, but slightly longer than the head and prothorax, l)ristling with long sparse set^e, basal joint much longer and thicker than the second, the latter longer than the third, which is twice as long as wide, fourth subquadrate, outer joints becoming strongly transverse, also more and more obconical and with a corona of dense ashy pubescence, the tenth scarcely twice as wide as long, eleventh large, conoidal, as long as the two preceding. Prothorax three- fourths wider than long; sides parallel, almost evenly, distinctly arcuate, becoming straight and convergent in basal half; base and apex subequal, the former more arcuate ; basal angles very obtuse but distinct ; basal beaded edge conspicuous and rather abruptly defined ; disk very obsoletely, broadly flattened in the middle before tlie base. Elytra subquadrate, one-fourth wider and fully one-half longer than the prothorax ; sides nearly straiglit, the humeri slightly visible. Abdomen narrower than the elytra but wider than the prothorax; sides parallel and nearly straight ; first three segments im- pressed at base; fifth longer than the fourth. Legs moderate ; posterior tarsi short, the first two joints oblong, equal. Length 1.7 mm. ; width 0.5 mm. Coleoplerological Notices, V. 353 Rhode Island (Boston Neck). The description is drawn from the male, this sex having a small but rather strong carina near the apex of the fifth dorsal segment, and another, more feeble, near the apex of the sixth. There is a remarkable and isolated group of genera inhabiting the northern beaches of the Pacific coast, having the elytra ex- tremely short, the tibiae short, completely devoid of lateral spin- ules, and clothed with long sparse erect hairs, the tarsi very short, thick, 4-4-5-jointed, the first four of the posterior equal or with the first just visibly longer than the second, the prothorax narrowed toward base, with the hypomera feebly inflexed, and the labial palpi two-jointed. They may be defined as follows : — Metasternum invisible except between the apices of the middle coxse, whicli extend to or slightly upon the bases of the posterior ; labial palpi greatly developed, the basal joint stout, cylindrical, more than twice as long as the second and as long as the second maxillary ; integuments extremely opaque and densel}' granulato-reticulate throughout. Body broad, the abdomen inflated, with no segment at all impressed at base, the metasternal side-pieces extending behind the elytra ; labrum very strongly transverse, four times as wide as long, truncate ; mentum strongly transverse, the apex transversely truncate and with an abrupt shallow emargination occupying median third, with its bottom transverse; ligula with a slender deflexed terminal process, the supports of the palpi separated by a rather wide parallel intermediate piece ; mandibles serru- late from the internal submedian tooth nearly to the apex ; infralateral carina partially obsolete LiparoceplialllS Body narrow, the abdomen not inflated although rather broader than the anterior parts, the first three segments transversely impressed at base ; metasternal side-pieces not extending behind the elytra ; labrnm smaller, twice as wide as long, rounded ; mentum narrower, more rounded at apex, with a small median emargination in circular arc; process of ligula not visible in the types ; supports of the labial palpi very approximate, separated by a slender acute process ; mandibles smaller, not serrulate within ; infralateral carina feeble but almost entire Diaillota Metasternum longer, the apices of the intermediate separated from the bases • of the posterior coxse by a conspicuous interval ; labial palpi long but much more slender, the basal joint slightly longer and only very slightly thicker than the second ; eyes extremely small, rudimentary ; integuments more finely sculptured but dull Alllblopiisa In these genera the middle coxae are contiguous and their aceta- bula indefinitely limited behind ; in Liparocephalus and Diaulota the 354 Coleopterological Notices, V. coxae are all very large but are much smaller in Amblopusa. They would be allied to Sipalia if the labial palpi were three-jointed and the middle acetabula sharply defined. 4 LIPAROCEPHAI.IJS Makl. Of this singular genus there are two species very closely allied but undoubtedly distinct, as follows : — Body black throughout ; antemife shorter, barely as long as the head and prothorax, the outer joints slightly wider than long ; prothorax slightly transverse, moderately constricted behind, more than twice as long as the elytra brevipenuis Makl. Body black, the head and prothorax rufo-testaceous ; antennae distinctly longer than the head and prothorax, the outer joints not wider than long ; prothorax strongly transverse, very strongly constricted at base and not more than twice as long as the elytra cordicollis Lee. These differences appear to be independent of sex, the sixth ven- tral being broadly lobed in the middle in the four speciniens which I have examined ; these specimens are from Washington State and Queen Charlotte Island. In placing the genus Liparocephalus in the Paederini, Maklin evidently had in view only the peculiar dull lustre, a characteristic feature in Lithocharis and some allied genera; the shape of the head also reminds us of some p^ederides. DIAULOTA n. gen. Although greatly resembling Liparocephalus in general organi- zation, dense granulose sculpture and large coxae, the species of Diaulota can be distinguished readily by their narrow parallel body with undilated abdomen, more convex eyes, shorter antennae, nar- rower and more elongate head, much less constricted prothorax and many other characters as given in the table. In my cabinet there are representatives of two species: — Tibiae clothed a little more thinly with longer hair ; prothorax relatively longer, less narrowed behind and much narrower than the elytra. densissiiua Tibiae clothed with shorter hair ; pubescence of the upper surface shorter and less conspicuous ; prothorax at its widest part fully as wide as the elytra. insolita D. densissima n. sp. — Black throughout, the anterior parts densely opaque, the abdomen dull but more alutaceous ; pubescence moderately Coleopterological Notices, V. 355 dense, fine, erect, not very conspicuous. Head narrow, elongate, the sides parallel and feebly arcuate ; eyes small, rather coarsely faceted, convex, at twice their length from the base ; antennse short, one-third longer than the head, moderately incrassate, the second joint thick, nearly as wide as the first, much thicker than the third, but slightly longer than wide, third strongly obconical, slightly longer than wide, four to ten transverse, gradu- ally wider, eleventh small, conoidal, not as long as the preceding two. Pru- thorax but very slightly wider than the head and about as long, fully as long as wide ; sides subparallel, broadly feebly and evenly arcuate, but slightly more convergent toward base than apex ; disk evenly convex, widest slightly before the middle ; apex broadly arcuate and just visibly wider than the base. Elytra short, fully twice as wide as long, one-half as long as the prothorax and nearly one-fifth wider ; sides feebly convergent from apex to base and feebly, evenly arcuate. Abdomen tliiek, parallel, fully as wide as the elytra, nearly twice as long as the anterior parts ; sides nearly straight ; border thick ; surface transversely and feebly convex. Tibiae moderate in length ; posterior tarsi barely one-half as long as the tibise, the first four joints very short, equal ; ungues long, slender, evenly and rather strongly arcuate. Length 2.7 mm. ; width 0.7 mm. Alaska (mainland opposite Ft. Wrangel). Mr. H. F. Wickhani. The sing'le specimen serving as the type is apparently a female. The other species is nearly similar, but differs in the following characters : — D. illSOlita n. sp. — Black throughout and very dull, body narrower. Protlwrax wider than the head, not quite as long as wide, wider just before the middle where the sides are broadly arcuate to the apex, distinctly convergent but not sinuate to the base, which is noticeably narrower than the apex. Elytra barely twice as wide as long, equal in width to the prothorax and rather more than one-half as long. Abdomen long, at base as wide as the elytra; sides straight, gradually divergent behind, so that the apex of the fourth segment is fully one-third wider than the elytra; border thick. Length (extended) 2.8 mm.; width 0.6 mm. Queen Charlotte Island. The male has the sixth ventral plate prolonged in the middle in a rounded triangular lobe. In both of these species the last three joints of the antennae form a kind of club, the ninth and tenth being longer as well as wider than those preceding them. The label states that the type specimen was taken near low water on the beach. AI»IBLOPlJSA n. gen. Body extremely slender, parallel, linear, thick and slightly con- vex. Head oval, parallel, the sides broadly arcuate ; labrum mode- 356 Coleopterological Notices, V. rately transverse, rounded; infralateral carina obsolete, feebly trace- able very near the base. Eyes rudinientarv, consisting of five or six coarse facets in a cluster behind the mandibles. Antennte rather short, moderately incrassate; outer joints subsimilar, strongly trans- verse; second cylindrical, as long as the next two and about as thick. Mentum large, very slightly wider than long, trapezoidal, the sides feebly sinuate ; apex rather more than one-half as wide as the base and evenly sinuate in circular arc throughout the width. Ligula not distinct in the type. Maxillary palpi normal, the third joint longer than the second. Prothorax narrowed toward base, the hypomera scarcely inflexed beyond the vertical, large, evanes- cent far behind the apex. Elytra very short. Abdomen long, par- allel; first five segments equally impressed at base; fifth longer than the fourth; sixth distinct, a little narrower than the fifth but as long as the fourth. Middle coxae contiguous, the mesosternal process short, triangular, acute, extending barely to the middle. Metasternal side-pieces rapidly widening behind. Legs very short, sparsely hairy, the tibiae not at all spinulose ; tarsi very short, stout, the posterior three-fifths as long as the tibiae, with the first joint very slightly longer than the second ; ungues very small, slender, moderatelv arcuate. A.1)revipes n. sp. — Slender, pale rufo-testaceoas throughout, except the abdomen above and beneath, which is piceous-black with the apex pale ; integuments dull and minutely, strongly reticulate, the abdomen less strongly so and more shining ; anterior parts finely, indistinctly purictate, the abdomen minutely, not densely but more distinctly so ; pubescence distinct, rather long and moderately dense. Head convex, ovalo-conoidal, a little longer than wide, rather longer than the prothorax and fully as wide or a little wider ; antennje nearly one-half longer than the head. Prothorax very slightly wider than long, widest at the apical angles, the sides thence moderately convergent and nearly straight to the basal angles, which are obtuse and slightly blunt ; apex broadly evenly and rather strongly arcuate, distinctly wider than the base ; disk broadly Hattened toward the middle. Elytra three-fourths as long as the pro- thorax, and, at apex, not at all wider ; sides convergent and scarcely arcuate from apex to base. Abdomen as wide as the elytra, parallel, one-half longer than the anterior parts ; sides straight ; border moderate, equal ; surface transversely and feebly convex. Length 1.7 mm. ; width 0.3 mm. Alaska (Ft. Wrangel). Mr. Wickham. I have seen only a single specimen, probably a male, the sixth ventral plate being broadl}', very obtusely lobed behind. Coleopterological Notices, V. 357 THECTUROTA n. gen. The body is extremely slender, parallel and subdepressed. Head large, flat, slightly broader toward base, the eyes small, far before the middle and slightly prominent. Antennae short, feebly incras- sate. Mentum small, transverse. Ligula with the apical process short, cylindrical, thin and perfectly simple, the labial palpi three- jointed, with the first joint nearly as long as the next two, cylin- drical; second thinner, longer than wide; third still more slender and a little longer than the second. Maxillae well developed, the cardo large, the lobes very small, short, the palpi small, the third joint but slightly longer than the second, but thick and obconical ; fourth distinct, oblique. Gular sutures long, straight and parallel ; infralateral carina wholly obsolete. Prothorax slightly narrowed toward base, the hypomera visible from the side. Middle coxae moderately large, contiguous, the mesosternal process very slender and acute. Metasternum large, the side-pieces rather narrow, par- allel anteriorly but with the inner line approaching the elytra pos- teriorly, becoming very acute and narrow at the elytral apex. Legs very short; tarsi short and stout, plainly 4-4-5-jointed, the first four joints of the posterior equal, short, thick, the last moderate iu length ; claws moderate, slender, evenly arcuate. The extremely small and slender forms referred to this genus remind us of Hydrosmecta Thorns., but are allied closely to Thec- tura, and resemble the latter in the peculiar posteriorly attenuate met-episterna, but differ in the complete absence of any of the caudal spines so characteristic of that genus. Several of the spe- cies have a deep transverse pit at the extreme base of the occiput, and the types of one or two have the head thrown back slightly, obscuring this part, but it is probably a generic character. In Hydrosmecta subtilissivia the middle tarsi are five-jointed, and the gular sutures converge from the base. The species of Thecturota are among the smallest, and are prob- ably the most slender, of the Aleocharini ; they will prove to be tolerably numerous, and the four in my cabinet may be separated by the following characters : — Head gradually perceptibly wider behind, the eyes very small and the upper surface coarsely and distinctly punctured tcnilissillia Head parallel or very nearly so, tlie eyes larger and the surface finely, feebly and very indistinctly punctate. 358 Coleopterological Notices, V. Head and prothorax equal in width and distinctly u^rrower than the elytra. Elytra distinctly longer than the prothorax ; pubescence denser. capito Elytra not longer than the prothorax ; pubescence sparse ; body slightly more slender demissa. Head and prothorax subequal in width to the elytra ; pubescence dense ; elytra much longer than the prothorax exiglia. I have not been able to discern any marked sexual modifications. T. tenilissima n. sp. — Linear, strongly shining throughout, dark pice- ous-brovvn, the pronotum, tip of the abdomen and legs pale tiavate ; antennae dusky, pale toward base ; pubescence sparse, moderately long, subrecumbent, coarse, not conspicuous ; head coarsely, sparsely, conspicuously but not very deeply punctate, the punctures wanting along the median line ; pronotum and elytra very minutely sparsely and inconspicuously punctate, polished, not at all reticulate ; abdomen finely, sparsely but more distinctly and sub- asperately punctured. Htad large, fully as wide as the prothorax and as long as wide, the sides behind the eyes straight and feebly divergent to basal fourth, then broadly rounded to the wide neck ; surface with a small deep elongate impression in the middle just behind the eyes ; antennse one-third longer than the head, feebly incrassate, the basal joint much longer than the second, the latter as long as the next two, obconical and nearly twice as long as wide, fourth to tenth very strongly transverse, close but somewhat perfo- liate, feebly increasing in width and also in length, eleventh slightly longer than wide, obtusely rounded at tip, as long as the preceding two. Prothorax about one-third wider than long, the sides feebly convergent and straight from near the apex to the obtuse and indistinct basal angles ; base scarcely as wide as the apex ; disk feebly convex, with a very feeble but entire median impressed line. Elytra nearly as long as wide, equal in width to the protho- rax and quite distinctly longer ; sides straight and parallel. Abdomen linear, rather longer than the anterior parts, at base very slightly narrower, but at the apex of the fourth segment somewhat wider, than the elytra ; first four segments feebly impressed at base ; fifth much shorter than the fourth ; sixth large and distinct. Length (abdomen strongly extended) 1.1 mm. ; width less than 0.2 mm. Rhode Island. The coarse punctures of the large, posteriorly enlarged head, minute size and linear form, will render the identification of this species quite certain. T. capito n. sp. — Piceous to blackish, the legs pale flavate ; antennse dusky, paler toward base ; integuments feebly shining, the head somewhat strongly reticulate, very minutely, somewhat closely punctate ; pronotum and elytra minutely and more densely punctate ; abdomen more asperately ; pubescence rather dense, sparse and longer on the abdomen. Head fully Coleopterological Notices, V. 359 as wide as the prothorax, nearly as in the preceding species but rather less dilated bt^hind and with somewhat larger eyes ; upper surface broadly im- pressed in the middle anteriorly, and with a small deep impression near the centre, also with a deep transverse sulcus at the extreme base of the occiput ; antennae nearly as in tenuissima, but with the fourth joint less transverse, tenth more than twice as wide as long. Prothorax one-third wider than long ; sides feebly convergent from apex to base and broadly, feebly arcuate ; basal angles very obtuse ; disk broadly, feebly impressed along the median line. Elytra quadrate, distinctly wider and two-filths longer than the prothorax ; humeri obliquely rounded to the prothorax and slightly visible. Abdomen scarcely as long as the anterior parts, very little narrower than the elytra; sides subparallel, the tip of the fourth segment scarcely visibly wider ; fifth slightly longer than the fourth; border moderate. Length 1.1 mm.; width 0.2 mm. Texas (Galveston). This infinitesimal animal seems to be widely diflfused, for I have taken specimens, either of it or of a species so similar as to be almost uudistinguishable with luy present material, also at Austin and Waco in Te.xas, and Tu9Son in Arizona. The transverse sulcus at the occipital base receives the anterior margin of the pronotum when the head is thrown back. T. demissa n.,sp. — Minute, slender, rather convex, strongly shining throughout, the abdomen still more polished, black, the pronotum feebly picescent, the elytra still paler, rufescent ; antennae black, piceous toward base ; legs pale flavate ; anterior parts finely but not strongly reticulate, minutely, subobsoletely punctate, the elytra scarcely more distinctly so, the abdomen very minutely, sparsely and subgranularly ; pubescence short, rather sparse, not conspicuous, very sparse on the abdomen. Head large, rather longer than wide, fully as wide as the prothorax, the sides parallel ; eyes at a little more than their own length from the base ; surface deeply concave along the middle anteriorly, and with a deep conspicuous fovea at the centre ; antennae short, feebly incrassate, scarcely visibly longer than the head and prothorax, the basal joint thicker and nearly as long as the next two, second longer than wide and nearly as long as the third and fourth, constricted at base, outer joints distinctly transverse. Prothorax not more than one-fourth wider than long ; sides broadly arcuate, becoming gradually almost straight and slightly convergent in about basal half; apical angles deflexed and broadly rounded ; basal obtuse and more narrowly rounded ; base broadly arcuate, scarcely as wide as the apex ; disk convex, narrowly and rather strongly impressed along the median line throughout. Elytra much shorter than wide, toward apex distinctly wider than the prothorax, not longer, the sides feebly divergent from the slightly exposed humeri. Abdomen, contracted, subequal to the anterior parts, at base distinctly narrower than the elytra ; sides straight and just perceptibly divergent from the base, the apex of the 360 Coleopterological Notices, V. fifth appreciably wider than tlie base; fourth and fifth segments equal in length and each distinctly longer than one to three. Legs very short, stout. Length 1.0 mm. ; width scarcely 0.2 mm. New York (Catskill Mts.). Mr. H. H. Smith. The more polished, more sparsely pubescent integuments, less transverse prothorax and shorter elytra, will readily distinguish this species from capito. T. exiglia n. sp. — Extremely slender, parallel and linear, moderately convex, shining, minutely, rather closely but not conspicuously punctate, the pubescence ratlier long, close and distinct, streaming obliquely on the elytra and transversely on the pronotum ; color rather pale brown, the head piceous, the abdomen black toward apex ; legs and antennae toward base pale, flaves- cent. Head large, rather convex, deeply impressed just before its centre ; sides parallel ; eyes at fully one-half more than their own length from the base ; antennae nearly as in demissa. Prothorax one-third wider than long ; sides feebly convergent and straight from apex to base ; base and apex broadly, strongly arcuate, the former slightly the narrower ; disk strongly, rather widely impressed along the median line. E/ijtia quadrate, barely wider than long, one-third longer but scarcely perceptibly wider than the prothorax ; sides parallel, straight ; humeri very sligbtly exposed. Abdomen, extended, a little longer than the anterior parts, at base perceptibly narrower than the elytra ; sides straight ; apex of the fifth segment distinctly wider than the first and fully as wide as tlie elytra ; first four tergites impressed at base, the impressions successively and uniformly decreasing in depth and width. Legs very short, stout. Length 1.3 mm. ; width 0.2 mm. Iowa (Cedar Rapids). Dr. E. Brendel. Almost as extremely slender as tenuissima, but with a minutely punctate and parallel head. I can find only a single specimen amongst my material, and the sex of the type is undetermined. THECTIIRA Thoms. The anterior and middle tarsi in this genus are distinctly four- jointed, the posterior five-jointed, the basal joints very short and equal and the last joint long ; its position among the allies of Colpodota is therefore erroneous, and it should be transferred to the neighborhood of Homalota Mann , with which how^ever it can- not be united because of its three-jointed labial palpi. The follow- ing species is closely related to cuispidata Er. : — T. aniericana n. sp. — Slender, parallel, linear, very strongly depressed, piceous-black ; antennaj toward base and legs pale ; anterior parts dull and alutaceous, the head strongly, sparsely punctured, the pronotum and elytra Coleopterological Notices, V. 361 excessively finely and indistinctly so, tlie abdomen with a few scattered aspe- rate punctures ; pubescence fine, rather dense but not conspicuous, longer and sparse on tlie abdomen. Head very nearly as wide as the prothorax, wider than long, the sides parallel ; eyes well developed, convex and prominent ; antennse distinctly incrassate, short, barely as long as the head and prothorax, the last joint as long as the two preceding. Prothorax one-third wider than long, the sides just visibly convergent and almost straight from near the apex to the rounded basal angles ; base arcuate ; disk broadly, feebly impressed along the middle. Elytra fully as long as wide, not wider than the protho- rax and one-half longer, parallel and straight at the sides ; humeri exposed. Abdomen as long as the anterior parts, slightly narrower than the elytra, parallel and straight at the sides, the border strong. Length 1.6 mm. ; width 0.3 mm. New York. The middle spine of the sixth dorsal plate is as well developed as in cuspidata, but is more inclined backward ; its apex is notched anteriorly, the posterior spur more abruptly bent forward over the tip than in cuapidata ; lateral spines small and distinct. The male has, at the middle of the second tergite, two small tubercles distant by one-half the width, on the third two rather stronger tubercles distant by two-thirds the width, on the fourth two much feebler tubercles distant by barely one-third the width, the fifth broadly impressed in the middle. A single male. This species differs from cuspidata in its slightly more incrassate antennae with longer terminal joint, in its wider and distinctly more transverse prothorax, and in the position of the tubercles of the fourth dorsal, which are distant by one-half the discal width in the European species; also by the more posteriorly inclined terminal spine, somewhat differently modified at apex, and in the entire absence of the discal impression of the sixth segment at the base of the spine. OLIGIJROTA n. gen. Body minute, parallel, subdepressed. Head large, quadrate, the eyes moderate, convex and prominent, before the middle; infra- lateral carina completely obsolete. Antennae short, incrassate, the basal joint large, thick ; second shorter ; second and third strongly constricted at base, the former much the larger ; outer joints trans- verse. Mentum very small, transversely trapezoidal. Ligula with a minute, apparently simple terminal process and two stiff bristles, the palpi well developed, three-jointed, the first thick, elon- Akxals N. Y. Acad. Sci., VII, Oct. ISg"^.— 24 362 Goleopterological Notices, V. gate, cylindrical, the second narrower and much shorter; third slender, as long as the first. Maxillary lobes small, short, thick, ciliate within ; the palpi small, with the third joint longer than the second ; fourth minute. Gular sutures perfectly straight and par- allel throughout. Prothorax quadrate, the hypomera narrow but entire, feebly inflexed and distinct from the side. Elytra mode- i"ate. Abdomen normal, parallel, not at all spinose at apex, the -four basal segments feebly, narrowly impressed at base; fourth -and fifth equal and longer than the others. Prosternnm rather well developed before the coxje. Intermediate coxae small, approxi- .mate, the mesosternal process short, angulate. Metasternal side- pieces wide, parallel, the epimera well developed, disappearing under the elytra at basal third. Legs and tarsi very short, the tarsi 4-4-5- jointed, the basal joint of the middle and posterior slightly longer than the second ; last longer ; claws small, slender. This genus is allied to Thectura, but differs in the absence of caudal spines, in its shorter elytra and metasternum, and especially in the conformation of the metaparapleurie, which in Thectura are quite remarkable, being narrow and parallel anteriorly, but with the inner margin oblique toward the elytra behind, so that they become exceedingly narrow at the elytral apex, the epimera invis- ible. In both of these genera the coxas are unusually small for the present tribe. O. piisio n. sp. — Parallel, pale piceons-brown, the head and abdomen darker, blackish, the tip of the latter, legs and antennje paler ; integuments rather shining, coarsely and feebly reticulate, not densely and almost imper- ceptibly punctate throughout ; pubescence rather long and sparse but distinct. Head just perceptibly wider an-d distinctly longer than the prothorax, as long as wide, the neck two-thirds as wide ; sides parallel ; surface with a small impression in the middle between the eyes ; antennae one-half longer than the head. Prothorax nearly one-third wider than long ; sides parallel, nearly straight, the apical and basal angles rounded ; base and apex about equal, arcuate ; disk narrowly and feebly impressed along tlie median line. Eli/tra much wider than long, very slightly wider and longer than the prothorax ; sides nearly parallel and straight. Abdomen shorter than the anterior parts, slightly narrower than the elytra, parallel and straight at the sides ; border rather fine. Legs rather stout. Length 1.2 mm. ; width 0.2 mm. Indiana. One of the most minute of the Bolitocharides, and probably occurring under bark ; the unique type is apparently a female. Coleopterological Notices, V. 363 LEPTUSA Kraatz. , The first species here described seems to be truly congeneric with the European anaiis, but has the prothorax much smaller and narrower, the elvtral humeri being exposed at base. I/, 'brevicollis n. sp. — S!end«i-, subparallel, rather convex, shining, the abdomen still more polished, dark red-brown ; legs paler, moi-e flavate ; antenna concolorous ; head piceous ; abdomen brighter rufous, with a black subapical cloud ; head and pronotum very feebly punctulate ; elytra coarsely, somewhat rugosely but not at all asperately so ; abdomen finely and sparsely ; pubescence sparse but rather long, subrecumbent and distinct. Head orbicu- lar, convex, much wider than long, distinctly narrower than the prothorax, the eyes rather large and prominent, at less than their own length from the base ; labrum truncate ; antennae as long as the pronotum and elytra, moder- ately incrassate, second and third joints elongate, subequal, fourth obconical, as long as wide, four to ten gradually wider, the latter nearly twice as wide as long, eleventh rather small, not longer than the two preceding. Prothorax transverse, fully three-fourths wider than long, widest at two-fifths from the apex where the sides are narrowly rounded, thence convergent and feebly arcuate to the apex, equally convergent and broadly sinuate to the basal angles, which are obtuse but sharp, the apical deflexed but also not at all rounded ; hypomera extending to the apex ; base transverse, equal to the apex ; disk strongly convex, extremely obsoletely impressed along the middle and transversely before the scutellum. Elytra large, parallel, slightly wider than long, one-fourth wider and one-half longer than the prothorax ; sides nearly straight ; humeri exjjosed at base ; suture finely beaded. Abdomen parallel and straight at the sides, much narrower than the elytra, as wide as the prothorax ; only the first three segments strongly impressed at base ; fifth distinctly longer than the fourth. Legs rather long, slender ; posterior tarsi short, with the first joint distinctly longer than the second. Length 2.1 mm. ; width 0.55 mm. Pennsylvania. The type is a male, the fifth dorsal plate having a small feeble longitudinal carina in the middle. The labial palpi are apparently three-jointed, but the first is small and anchylosed to the second, which is subequal to the more slender third ; the process of the ligula is slender, parallel and simple at apex. The metasternum is large and long, with the side-pieces very narrow and parallel — quite different from the form occurring in Sipalia. The middle acetabula are deep and sharply limited by an acute beaded edge, except for the extremely short distance between the apices of the sternal processes, of which the mesosternal is acutely produced to the middle with its apex slightly blunted, the coxa? quite appre- 364 Coleopterological Notices, V. ciably separated. This spenies seems to be somewhat intermediate between Leptusa and Silusa. The two following species are similar in structure throughout and possibly belong to Leptusa, but differ considerably in facies from hrevicollis, because of the much longer prothorax and the densely opaque and lustreless anterior parts of the body ; they may be defined as follows : — Stouter, the anterior parts of the body velvety bliie-black and perfectly opaque ; fourth and fifth ventral segments exactly equal in length. opaca Much more slender, the head and pronotum opaque, brown, the elytra rather more shining ; fifth ventral a little longer than the fourth ...seiuiniteilS In oipaca the conformation of the parts about the middle coxae is exactly as in hreticollis, but the mesosternal process extends as far behind as the apex of the metasternal ; it is however free and not continuous on the same level. Li. opaca n. sp. — Stout, blackish, opaque, the abdomen shining, rufo- testaceous, the last two segments black ; legs pale, the posterior femora clouded with piceous toward apex ; antennae blackish, pale toward base and with the eleventh joint abruptly pale flavate ; head and pronotum completely lustreless, not punctate, minutely and extremely densely granulato-reticulate through- out ; elytra sericeous, indistinctly punctate ; abdomen ratlier strongly, not very densely punctate, sparsely so toward apex ; anterior parts finely, very indistinctly pubescent, the abdomen more sparsely but distinctly so. Head more than three-fourths as wide as the prothorax, the eyes rather prominent, at less than their length from the base ; antennae about as long as the pro- thorax and elytra, strongly, gradually increasing in width, the outer joints strongly transverse, eleventh longer than the two preceding. Prothorax two- fifths wider than long, widest at anterior third where the sides are strongly rounded and prominent, thence strongly convergent and distinctly sinuate to the base, which is transversely arcuate and equal in width to the apex ; basal angles obti;se but scarcely at all blunt ; disk convex, even, not impressed. Elytra slightly wider than the prothorax and about one-third longer, parallel, the sides nearly straight ; humeri slightly exposed at base. Abdomen a little longer than the anterior parts, about as wide as the prothorax ; sides parallel, scarcely visibly arcuate ; border thick. Length 2.0 mm. ; width 0.6 mm. Pennsylvania. The four specimens in my cabinet do not indicate any variation. Lit seminitens n. sp. — Slender, parallel, dark red-brown, the abdomen bright rufo-testaceous, with a subapical black cloud ; legs pale ; antennae blackish, paler toward base, the eleventh joint abruptly pale ; head and pro- notum opaque, feebly pubescent, impunctate and minutely, very densely gran- Coleo]}ierological Notices, V. 365 ulato-reticulate ; elytra feebly shining, indistinctly punctate, feebly pubes- ,cent; abdomen polished, strongly, closely punctate toward base, very minutely and remotely so toward tip, the pubescence longer, sparse but distinct. Head transverse, very nearly as wide as the prothorax, the eyes small, at more than their length from the base ; antennae feebly incrassate, rather longer than the prothorax and elytra, the outer joints but slightly wider than long. Prothorax large, one-fourth wider than long, widest and rather strongly rounded at apical third, the 'sides strongly and distinctly sinuate in more than basal half; base broadly arcuate, rather narrower than the apex; basal angles obtuse, scarcely, at all blunt ; disk broadly convex, even, with a very feebly impressed line along the middle. Elytra slightly wider than long, equal iu width to the prothorax and but very slightly longer ; sides parallel ; humeri slightly exposed at base. Abdonifn fully two-thirds longer than the anterior parts, perfectly parallel, about as wide as the elytra. Posterior tarsi about two-thirds as long as the tibiaa. Length 2.4 mm. ; width 0.5 mm. New York. Evidently allied to the preceding, but distinguishable very readily by the slender and more parallel form, longer abdomen, more shining elytra, longer and more slender antennae, smaller eyes and several other structural features. ASTHEXESITA n. gen. Body minute, parallel, not ver}^ narrow, somewhat convex. Head long, ovo-conoidal, convex, the eyes very small, at some distance from the mandibles and antennae, and at fully twice their own length from the base; labrum rather elongate, rounded; infra- lateral carina very feeble, subobsolete. Antennae long, evenly and gradually incrassate, the second joint nearly as long as the next two; third strongly obconical ; four to ten equal in length, trans- verse, gradually wider, the tenth more than twice as wide as long; eleventh ovoidal, as long as the preceding two. Mentum trape- zoidal, truncate. Ligula with a slender terminal process which is distinctly bifid at apex ; labial palpi three-jointed. Maxillary palpi normal, the third joint much longer than the second, the fourth very minute, oblique. Prothorax narrowed and sinuate toward base, nearly as in Leptusa. Elytra well developed, broadly emarginate at apex, the suture not distinctly beaded. Abdomen very feebly narrowed toward base, the first three segments deeply impressed at base ; fifth very much shorter than the fourth, the latter not at all impressed. Middle coxse and sterna as in Leptusa. Metasternal side-pieces narrow, parallel. Legs short ; tarsi stout, 4-4-5-jointed, 366 Coleopterological Notices, V. the posterior but little more than one-half as long- as the tibiae, with the first joint just visibly longer than the second or third, the latter scarcely longer than wide. This genus is closely allied to Leptusa, but differs in the longer antennae with much shorter third joint, in the longer head and labrum, in the bifid ligula and very short fifth segment of the abdomen, which is not perceptibly more than one-half as long as the fourth ; also in the more robust tarsi and minute size. A. pallens n. sp. — Pale rnfo-testaceous throiighout, the fourth dorsal segment piceous-black ; iutegnmeiits slightly reticulate, feebly shining, the abdomen polished ; head, pronotum aiad elytra veiy minutely and scarcely visibly piinctulate ; abdomen more sparsely but not distinctly so ; pubescence sj>arse but long, coarse and distinct. Head rather longer than wide, a little narrower but longer than the prothorax, convex, even ; sides parallel and evenly arcuate ; antennje as long as the head, prothorax and elytra, pale throughout. Prothorax one-third wider than long, the sides broadly, feebly arcuate, more convergent and nearly straight in basal half, the basal angles very obtuse but not rounded ; apical deflexed, right — viewed laterally — not rounded ; base very feebly arcuate, slightly narrower than the apex ; disk convex and declivous at the sides, more flattened above, with a broad region along the middle which is very feebly impressed, more distinctly so toward base and densely granulato-reticulate and opaque throughout. Eliftra dis- tinctly wider than long, parallel and straight at the sides, just visibly longer and fully one-fourth wider than the prothorax, the humeri distinctly exposed and transverse at base. Abdomen as long as the anterior parts, behind the middle as wide as the elytra, but at base distinctly narrower ; sides scarcely perceptibly arcuate ; border moderate, not thick ; surface transversely convex behind. Legs short. Length 1.25 mm. ; width 0.3 mm. Florida. In the male the fifth ventral plate is transverse at apex, Avith a short acute spicule projecting horizontally from the middle of the edSCIira Third antennal joint shorter than the second fusciceps Head equal in width to the prothorax ; antennae more incrassate. Antennae long, the outer joints barely perceptibly wider than long ; third elongate, slightly shorter tlfan the second lilieata Antennae much shorter, more compact and strongly incrassate, not much longer than the head and prothorax ; secoiTd antennal joint subequal in length to the next two together ; eyes much smaller. Neck rather more than one-half as wide as the head atteniiata Neck slightly more than one-third as wide as the head pei'tenuis G, Taleus n. sp. — Parallel, depressed, somewhat wider than usual, piceous-black, the elytra paler, clouded near the scutellum ; abdomen dark rufo-testaceous, clouded with blackish near the tip ; legs very pale throughout ; antennae black, paler toward base ; head and pronotum extremely minutely, closely punctate, feebly shining, the former more sparsely punctate toward the front ; elytra rather less finely, more strongly and much more excessively densely punctate and alutaceous ; abdomen with the first four segments closely, 314 Coleopterological Notices, V. comparatively coarsely and conspicuously punctate in apical half, impunctate in the polished basal impressions, fifth very remotely, subasperately punctate ; pubescence very short, extremely dense on the elytra, transverse on the pro- notum, longer but very sparse on the abdomen. Hmd slightly wider than long, a little narrower than the prothorax ; eyes large, rather prominent, at their own length from the base ; neck fully one-half as wide as the head ; antennae two-fifths as long as the body, slender, all the joints longer than wide, first three equal, very long, together constituting one-third of its length, remainder obconical, except the eleventh which is pointed and not as long as the two preceding. Prothorax slightly wider than long, the sides rounded anteriorly almost continuously around the apex from apical third, feebly convergent and straight thence to the basal angles which are obtuse and not rounded ; base broadly arcuate ; disk broadly, feebly flattened in the middle toward base. Elytra two-fifths wider and one-half longer than the prothorax, subquadrate ; sides parallel and straight ; humeri exposed at base ; surface fiat, strongly impressed on tlie suture toward base. Abdomen quite distinctly narrower than the elytra, as long as the anterior parts ; sides parallel and straight, feebly convergent near the apex ; border moderate ; fifth segment much longer than the fourth. Length 3.8 mm. ; width 0.75 mm. Texas (Austin). The type is a male, having a strongly elevated carina in apical half of the first visible dorsal plate, the carina projecting posteriorly to a slight extent ; the fifth segment also has a small feeble carina in the middle near the base. One specimen. G. texana n. sp. — Narrow, parallel, pale brown, the head blackish; abdomen more rufous, with a large feeble blackish cloud near the apex ; legs very pale ; antennje blackish, paler toward base ; head and pronotum very minutely, densely punctate, strongly shining ; elytra more coarsely and aspe- rately but not quite so densely punctate, rather shining ; abdomen polished, finely, moderately closely punctate, very sparsely so on the fifth segment ; anterior parts finely, very densely, the abdomen much more coarsely and sparsely, pubescent. Head distinctly shorted and narrower than the protho- rax, slightly wider than long, the neck one-half as wide ; eyes large, at fully their own length from the base ; antennae slender, a little longer than the prothorax and elytra, the first joint much longer than the second or third, the latter elongate, equal, fourth to tenth obconical, longer than wide, eleventh slender, pointed, scarcely as long as the two preceding. Prothorax nearly as long as wide, rounded near the apex, the latter feebly arcuate in the middle ; sides feebly convergent and straight from apical fourth to the basal angles, the latter obtuse but not rounded ; base very feebly arcuate, subtruncate ; disk almost imperceptibly impressed along the median line and feebly flattened in the middle before the base. Elytra quadrate, one-third wider and longer than the prothorax ; sides parallel and nearly straight ; humeri distinctly exposed at base ; disk narrowly, strongly impressed on the suture toward base. Abdo- men scarcely wider than the prothorax, a little longer than the anterior parts, Coleopterological Notices, V. 375 parallel and straight at the sides except near the apex ; border rather thick ; fifth segment longer. Legs short ; posterior tibiae swollen toward apex, slender near the base, the tarsi scarcely three-fifths as long. Length 2.7-3.0 mm. ; width 0.55-0.6 mm. Texas (Austin). The male has a strongly elevated carina at the middle of the first dorsal, becoming gradually feebler and ending at the basal impres- sion ; at apex it projects slightly beyond the margin ; there is also a very small carina near the base of the fifth. In both of these species the fourth antennal joint is distinctly shorter than the fifth ; in obscura, however, these two joints are subequal. The present species, although closely allied to valens, differs greatly in the longer basal joint of the antennae, form of the prothorax, sparser elytral and much finer and sparser abdominal punctuation, and in its smaller size and more slender form. Three males, exhibiting no variation. G. OlJSClira n. sp. — Depressed, rather wide, blackish, the pronotiim slightly, the elytra distinctly, pale ; abdomen scarcely paler toward base bat with the tip flavescent ; legs pale ; antennas not distinctly paler toward base ; anterior parts extremely minutely, rather densely punctate, somewhat strongly shining, finely, densely pubescent ; abdomen more strongly, rather closely, evenly punctate, with longer and somewhat sparse but distinct pubescence. Head a little wider than long, distinctly shorter but only slightly narrower than the prothorax, the neck one-half as wide as the width across the eyes, the latter at fully their own length from the base ; antennae slender, fully as long as the prothorax and elytra, equal in width from the fourth joint, the first three greatly elongate, the first longer, second and third equal, fourth scarcely visibly shorter than the fifth, fourth to tenth obconical, longer than wide, the tenth fully as long as wide, eleventh slender, pointed, not quite as long as the two preceding. Prothorax very slightly wider than long, the sides rounded and convergent in apical third, the apex more feebly arcuate in the middle ; sides straight and just visibly convergent in basal two-thirds, the base broadly, distinctly arcuate ; basal angles obtuse and distinct ; disk even, not perceptibly impressed. Elytra quadrate, one-third longer and wider than the prothorax, parallel and straight at the sides, with the humeri exposed at base ; disk impressed on the suture behind the scutellum. Abdomen distinctly narrower than the elytra, as long as the anterior parts ; sides parallel and evenly, just visibly arcuate ; border strong ; first foiir segments equal and nearly flat ; fifth one-half longer. Length 2.9 mm. ; width 0.G5 mm. California (Pomona). Mr. H. C. Fall. The truncate sixth ventral plate would seem to indicate the male, but there is no trace of the dorsal carinte so well developed in the two preceding species, and the present differs also in its more 316 Coleopterological Notices, V. pubescent abdomen, with the basal impressions much shorter or finer, extending- only very slightly upon the disk of the plates Two specimens. G, flisciceps 11. sp. — Slender, depressed, pale rufo-testaceous, tlie head darker, piceous ; elytra more flavate ; antennse dusky, pale toward base ; legs very pale ; head shining, minutely, densely and distinctly punctate ; pro- iiotum fe(jhly alutaceous, somewhat reticulate, very minutely and not dis- tinctly punctate ; elytra feebly alutaceous, minutely, very densely and rather more distinctly, the abdomen minutely feebly and sparsely, punctate ; pubes- cence fine, short, dense, especially on the elytra ; abdomen very sparsely but more coarsely pubescent. Head nearly as long as wide, distinctly shorter and slightly narrower than the prothorax, the neck two-thirds of the width across the eyes, the latter moderate, at one-half more than their length from the base ; vertex just visibly, longitudinally impressed in the middle; antennae long, very feebly incrassate, fully as long as the prothorax and elytra, the basal joint longer and slightly thicker than the second, the latter subcylindrical and perceptibly longer than the third, which is obconical and elongate, four to ten obconical, loosely connected, deeply concave at ajiex as usual, the fourth as long as wide, shorter than the fifth, tenth very slightly wider than long, eleventh rather large, fully as long as the two preceding. Prothorax nearly quadrate, rounded at the sides and narrowed in apical third, the apex broadly, feebly arcuate ; sides feebly convergent and straight in basal two-thirds ; base feebly arcuate, the angles nearly right and very pronounced ; disk feebly, transversely convex, scarcely at all impressed. Elytra quadrate, parallel and straight at the sides, one-third wider and longer than the prothorax, the humeri exposed at base; suture narrowly impressed behind the scutellum. Abdomen as long as the anterior parts, distinctly narrower than the elytra, the sides parallel and straight, the first three segments with large deep impres- sions, the fourth scarcely impressed and much shorter than the fifth ; basal segments with the raised basal part broadly emarginate posteriorly in nearly circular arc. Length 2.7 mm. ; width 0.55 mm. New York (Catskills) ; North Carolina (Asheville). Readily distinguishable from those which precede by the less punctate abdomen, shorter third antennal joint and smaller eyes. I can see no sexual marks of prominence in my three specimens. G. liueata n. sp. — Narrow, linear and depressed, rufo-piceous, shining, the abdominal apex, legs and basal parts of the antennae pale; head and pronotum feebly reticulate, minutely, closely but not very distinctly punctate, the elytra more asperately and distinctly but scarcely more densely so, the abdomen sparsely, extremely minutely and feebly ; pubescence anteriorly very short, dense, on the abdomen v^a-y sparse as usual, long and fimbriate at the apices of the basal segments. Head large, fully as wide as the prothorax, nearly as long as wide, the neck very broad, fully three-fourths as wide ; eyes Coleopterological Notices; V. 377 rather small, at fully three-fourths more than their length from the base ; front with a feeble and posteriorly angulate flat depression, extending from the middle to the apex ; antennae long, distinctly incrassate, two-tiftbs as long as the body, the three basal joints gradually decreasing in length, four to ten obconical, the latter nearly one-half wider than long, eleventh well developed. Frothorax about as long as wide, the sides very feebly convergent and straight in basal three-fourths ; apex and base equally and distinctly arcuate, the former slightly the narrower ; basal angles obtuse but rather distinct ; disk just visibly impressed along the median line except near the base and apex. Elytra quadrate, parallel and straight at the sides, one-fourth wider and longer than the prothorax ; humeri narrowly exposed ; disk flat, rather widely impressed on the suture near the scutellum. Abdomen linear, parallel and straight at the sides, distinctly narrower than the elytra, the first two segments strongly and widely, the third and fourth very feebly, transversely, impressed at base, the raised basal part emarginate in circular arc ; fifth nearly one-half longer than the fourth. Length 2.4 mm. ; width 0.45 mm. Nevada (Reno). The two specimens serving as types appear to be females. This species is quite distinct from any of those described above by the larger head, smaller eyes, more incrassate — though not much shorter — antennae, wider neck and relatively somewhat smaller elytra. G. atteniiata Csy.— Bull. Cal. Acad. Sci., 1, 1885, p. 30G (Calodera). This species is nearly similar to lineata, but has the antennae shorter and much stouter and the prothorax quite distinctly" wider than long. Length 2.0 mm. ; width 0.45 mm. G. pertenilis n. sp. — Narrow, linear, depressed, piceous-black, the pro- notum and elytra slightly paler ; legs and basal parts and tip of the abdo- men pale flavate ; integuments highly polished, the punctuation excessively minute, sparse, the pubescence of the head and pronotum rather long, sparse, of the elytra a little shorter and closer, of the abdomen very sparse, the erect setae sparsely bristling along the sides. Head rather convex, unimpressed, fully as wide as the prothorax, nearly as long as wide, the neck distinctly less than one-half as wide as the width across the eyes, the latter small, at about twice their length from the base, the basal angles broadly rounded ; antenns short, scarcely longer than the head and prothorax, distinctly incrassate, the first joint a little longer and much thicker than the second, the latter as long as the next two, tenth nearly one-half wider than long, the eleventh large, rather wider than the tenth, pointed near the apex and much longer than the two preceding. Prothorax nearly as long as wide, broadly rounded and con- vergent at the sides in apical third, the sides thence feebly convergent and just visibly sinuate to the distinct basal angles ; base broadly arcuate, fully three-fourths wider than the apex ; disk broadly, feebly convex, even. Elytra Annals N. Y. Acad. Sci., VII, Oct. 1893.— 25 378 Coleopterological Notices, V. rather longer than wide, one-fourth wider and one-tliird longer than the prothorax, parallel and straight at the sides, the humeri distinctly exposed ; suture deeply, narrowly impressed just behind the scutellum. Abdomen scarcely as long as the anterior parts, linear, distinctly narrower than the elytra, the sides parallel and straight ; first four segments narrowly deeply and equally impressed at base, the impressions more coarsely punctate ; fifth much longer than the fourth. Length 1.45 ram. ; width 0.25 mm. New Jersey. The single specimen seems to be a female. This species is by far the most minute of the genus, and is somewhat aberrant in its sparser punctuation. BAMOXA Sharp. A small Californian species is referred to this genus, but not without some doubt. It cannot be associated generically with Gyronycha, although the tarsi are four-jointed throughout and the tarsal claws similarly abruptly bent downward, for the reason that it differs in having a distinctly falagrioid habitus and in its short transverse abdominal segments ; it also differs conspicuously in the structure of the sterna between the middle coxag. The mesosternum is only very slightly produced between the coxae and forms a very short broad and gradually depressed cusp; behind this cusp the narrow but perceptible space between the coxae is depressed, form- ing a low rounded ridge, gradually regaining the level of the meta- sternum behind but without trace of a metasternal process defined by an acute line or bead; the coxal cavities are gradually less im- pressed and not well defined behind. At a very short distance behind the mesosternal cusp there appears, however, to be a fine transverse suture in the depressed ridge, and this may constitute the anterior limit of the metasternura proper. The posterior tarsi are rather long and slender, but the neck seems to be much broader and the antennae shorter than in the Central American forms. Although I am not sure, therefore, of the generic identity of the present species, its discovery is interesting in proving that these }>eculiar hygrononioid species form an important element in the Aleocharini of America, and include at least several distinct genera. B. falliana n. sp. — Narrow, slightly convex, polished throughout, piceous-black, the antennae black, paler at base ; legs pale, brownish-flavate throughout ; head finely, very sparsely punctulate ; pronotum equally minutely but much more closely, evenly punctulate, each puncture having a very minute stout decumbent hair quite different from those of any other part of the body, Coleopterological Notices, V. 379 the punctures and peculiar vestiture abruptly and completely disappearing near all the edges ; elytra and abdomen minutely sparsely and indistinctly punctulate ; pubescence of the head and elytra stiff and rather long, distinct although not very dense, of the abdomen longer, the pronotum with a series of three or four long erect setae along the lateral edges. Head rather longer than wide, at the eyes almost imperceptibly wider than the prothorax ; sides subparallel ; base transverse ; angles rounded ; neck two-fifths as wide as the perocular width, the eyes large, at their own length from the base ; antennae short, scarcely longer than the head and prothorax, the two basal joints equal in length, the first slightly thicker, second elongate, as long as the next two, third obconical, longer than wide, four to ten mutually almost perfectly similar, scarcely at all increasing in width, distinctly obtrapezoidal, one-half wider than long, eleventh conoidal, as long as the two preceding. Prothorax as long as wide, widest at apical third, where the sides are strongly rounded and somewhat prominent, thence rapidly oblique to the neck and distinctly convergent, broadly, feebly sinuate to the base ; apical angles strongly de- flexed, rounded ; basal also deflexed, slightly obtuse but not at all rounded ; base very feebly arcuate ; disk perfectly even, without trace of impression. Elytra quadrate, about as long as wide, not quite twice as wide as the protho- rax and about two-fifths longer ; sides subparallel and straight ; humeri very broadly exposed and transverse at base ; disk feebly convex. Abdomen short and broad, scarcely as long as the anterior parts, narrower than the elytra but much wider than the prothorax ; sides parallel, slightly convergent at the fifth segment, which is but slightly longer than the fourth ; first three impressed and polished at base. Legs slender, the posterior tarsi slender ; fully three-fourths as long as the tibiae, with the basal joint rather longer than the next two. Length 1.75 mm. ; width 0.4 mm. California (Los Angeles Co.). Mr. H. C. Fall. This is one of the most interesting aleocharinides which has been discovered on the Pacific slope, although quite insignificant in point of size. Oligotides. Antennae 10-jointed ; tarsi 4-4-4-joiuted. SOMATIUM Woll. The following species differs from the European Jiavicoy^ne in its more convex surface, much sparser pubescence and coarser, more uneven imbricate sculpture of the elytra. S. nugator n. sp. — Oval, convex, polished, black, the legs dark brown- ish-rufous ; antenuffi still paler throughout ; head almost impunctate, remain- der of the upper surface very minutely, sparsely punctate, the elytra and abdomen very coarsely imbricate, the latter becoming smooth toward tip ; 380 Coleopterological Notices, V. pubescence rather long, stiff and sparse, snbrecnmbent but longer erect and bristling on the abdomen, especially beneath. Head small, evenly convex ; eyes large, not prominent ; anteiinse about one-half longer than the head, the second joint longer and narrower than the first and as long as the next two, the latter not wider, five to seven gradually wider, eight and nine subeqiial, abruptly strongly transverse, twice as wide as long ; tenth short, bluntly ogival. Protkorax twice as wide as long, the sides strongly divergent from apex to base, evenly arcuate and continuous in curvature with the sides of the elytra; base broadly evenly and strongly arcuate throughout; disk sparsely feebly, subasperately punctate. Elijtra slightly wider than the base of the prothorax, one-half longer than the latter, two-thirds wider than long, broadly, angularly emarginate at apex ; disk evenly convex. Abdomen short, as broad at base as the elytra ; sides convergent and feebly arcuate ; fifth segment longer than the iourth. Legs short. Length 0.9 mm. ; width 0.5 mm. Pennsylvania. The club of the antennae is stouter than m Jtavicorne, and the eighth joint is much more transverse. The single type has the abdomen contracted. S. claTiger n. sp. — Stout, suboval, convex, strongly shining, black throughout, the legs piceous ; antennje pale toward base, the large club piceous-black ; head minutely, sparsely, the pronotum a little more strongly, asperately and rather closely punctate ; elytra strongly and closely imbricate ; abdomen more coarsely imbricate, the lines finer, the sculpture of the fifth tergite extending very nearly to the apex ; pubescence rather coarse, moderate in length and density. Head strongly deflexed, evenly convex, wider than long and fully three-fifths as wide as tlie prothorax ; eyes large, attaining the prothorax ; antennae one-half longer than the head, the second joint as wide as the first and a little longer, as long as the third and fourth, third slightly elongate, fourth scarcely longer than wide, fifth but little thicker, quadrate, sixth decidedly thicker, one-third wider than long, seventh still much wider, transverse, sixth to ninth rapidly and evenly increasing in width, the latter more than twice as wide as long, tenth as wide as long, very obtuse, as long as the two preceding, ninth joint more than twice as wide as the first. Prothorax fully twice as wide as long, the sides arcuate and strongly convergent from base to apex ; base very strongly, broadly arcuate, fully three-fourths wider than the apex ; disk strongly, evenly convex. Elytra as wide as the base of the prothorax, much longer than the latter ; sides feebly convergent and arcuate toward base ; disk slightly longitudinally prominent along the sides toward apex. Abdomen, when contracted, scarcely as long as wide, subquad- rate, shorter than the anterior parts, slightly narrower than the elytra, the sides feebly convergent toward apex ; border moderate ; fifth segment longer than the fourth. Tarsi slender. Length 1.0 ram. ; width 0.65 mm. Iowa (Keokuk). This species is larger and still broader than nugator, and diifers Coleopterological Notices, V. 381 in its more finely and closely imbricated elytra, and still larger and longer but more gradually formed antennal club. Two specimens. S. OTiforiue n. sp. — Broadly oval, convex, polislied, black, the legs piceo-testaceous ; antennae flavate ; punctures of the head and pronotum fine, moderately close, even ; elytra and abdomen with imbricate sculpture ; pubes- cence moderate in length, fuscous, rather conspicuous. Head vertical, not visible from above, the eyes large, attaining the base ; antennae short, one- half longer than the head, the second joint longer than the iirst and longer than the next two combined, third longer than the fourth and nearly twice as long as wide, three to seven subequal in width, the latter somewhat trans- verse, club abrupt, parallel, loose, the ninth joint one-half wider than long. Prothorax small, about twice as wide as long ; base strongly arcuate ; apical angles deflexed and right, narrowly rounded ; basal almost obliterated ; disk evenly convex. Elytra together broadly emarginate at base and equally broadly, triangularly emarginate at apex, at apical third much wider than the prothorax, one-third longer ; sides strongly arcuate toward base, continuous in curvature with the prothorax. Abdomen, when contracted, a little wider than long, about as long as the elytra, subcontinuous in outline with the latter, conical, the sides nearly straight ; fifth segment as long as the two preceding together. Legs slender, the posterior tarsi much shorter than the tibiae. Length 0.75 mm.; width 0.5 mm. California (Los Angeles Co.). Differs from the preceding two species in its more evenly elliptical outline, more abruptly formed antennal club and longer fifth ventral segment. Note. The species described by Say as Aleochara simplicicollis (Trans. Am. Phil. 8oc., VI, p. 155), is identical with Microglotta suturalis Sahib. OXYTELINI. OXYTELIJS Grav. Considering the general homogeneity of facies in Oxytelus, there is an unusual amount of variation in the structure of important organs, such as the mentum, and especially a very great amount of diversity in the male sexual modifications ; these may manifest themselves at either end of the body, sometimes virtually at the head only, in other species at the abdominal apex, but occasionally also quite noticeably at both extremities. The females are often very similar among themselves, and it is frequently almost impos- 382 Coleopterological Notices, V. sible to accurately identify an isolated example of that sex. I have consequently drawn all the characters of the following table and subsequent descriptions from the male alone, when that sex could be examined. In the Oxytelini true ocelli, such as characterize the Omalini, do not exist, but in Oxytelus their place is taken by two strongly setigerous punctures, occupying very nearly the same position at the base of the vertex. I have not noticed these punctures in Trogophloeus, nor in Aploderus, and they may possibly be pecu- liar to Oxytelus. Most of the species are subai'ctic, but those in which the front is spinose or spiculate in the male appear to be more partial to tropical conditions, and are abundant in Central America. Those known to me at present may be distinguished by the following char- acters : — Eyes large in both sexes, the tempora subobsolete ; seventh ventral plate of the male with two deep remote and parallel-sided fissures, the median lobe truncate, not projecting beyond the lateral parts and with its edge slightly thickened in the middle SCUlptUS Eyes moderate, the tempora always large and well developed 2 2 — Frontal margin armed in the male with a short stout acuminate or tri- angular process 3 Frontal margin not armed in the male 4 3 — Frontal process simple and finely acute at apex ; head large, subquadrate ; elytra longer than the prothorax. Eyes at their own length from the basal angles ; elytra closely punctate ; mandibles arcuate insi^uitlis Eyes at much more than their own length from the basal angles ; elytra more coarsely and sparsely punctate ; mandibles almost straight, arcuate at apex luunitus Frontal process notched at apex ; head smaller, strongly transverse. torcTiceps 4 — Male with the seventh ventral plate abruptly produced in the middle in the form of a flattened ligula. which is generally subtruncate at tip 5 Male with the seventh ventral bisinuate or biemarginate at tip, the median lobe rounded or broadly angular, sometimes obsolete 10 5 — Pronotum with three longitudinal impressed grooves 6 Pronotum even, without longitudinal impressions 9 6 — Vertex with two grooves convergent from the base COllTergeilS Vertex with the grooves parallel 7 Vertex without impressed grooves 8 7 — Sides of the prothorax sinuate near the basal angles, the latter more or less prominent. Coleopterological Notices, V. 383 Antennae moderately incrassate ; joints seven to ten equal, eleventh small, not as long as the two preceding ; basal joint slender, strongly constricted near the apex fliscipeilllis Antennae more incrassate ; joints seven to ten increasing in width, the eleventh large, as long as the two preceding; basal joint stouter, cylin- drical, not constricted lliiuilis Sides of the prothorax without trace of sinuation before the basal angles, the latter obtuse but generally not rounded, not at all prominent. Tempora more prominent than the eyes ; posterior tarsi long, fully two- thirds as long as the tibiae inoiltailllS Tempora not more prominent than the eyes ; posterior tarsi scarcely more than one-half as long as the tibia; inveniistlis S — Pronotal sulci very feeble peillisylvaniciis 9 — Vertex not at all impressed ; upper surface smooth and even. iiicoluniis lO — Sides of the prothorax more or less distinctly crenulate ; antennae rather long and slender. Front flattened and strongly, densely granulose and opaque between the antennal prominences; eyes moderate in size nigosiis Front finely, sparsely punctate and polished ; eyes very small ni^er Sides of the prothorax not crenulate 11 11 — Sculpture coarse and moderately dense ; rather small species 12 Sculpture very finely, longitudinally strigose ; species still more minute ....15 12 — Prothorax moderately transverse, with the sides parallel ; abdomen very strongly reticulate and dull toward base placusillllS Prothorax strongly transverse, with the sides convergent behind 13 13 — Sides of the prothorax distinctly emarginate just before the basal angles ; median sulcus of the pronotum alone distinct deilSllS Sides of the prothorax not emarginate near the base ; pronotum with three more or less distinct longitudinal impressions 14 14 — Sculpture very dense ; lustre dull, the abdomen reticulate and but feebly shining ; antennae rather more slender and less incrassate. alpicola Sculpture not so dense, except on the elytra of some species, the lustre some- what shining ; abdomen always polished ; antennae more incrassate. Elytra distinctl}"^ impressed near the suture toward base ; elytral punctures distinct, not forming long rugae at least toward base nitidlllllS Elytra very narrowly impressed along the suture near the base, the punc- tures indistinct, forming long coarse parallel rugae, the elytra shorter and more transverse than in nitidulus SUSpectUS Elytra not in the least impressed along the suture, perfectly flat, the punc- tures indistinct, forming long fine anastomosing rugae solirinilS 15 — Antennae longer, slender, the outer joints but slightly wider than long ; surface more shining and less densely strigilate Tegraildis Antennae short, stouter, strongly incrassate, the outer joints strongly trans- verse ; lustre very dull. 384 Coleopter^ological Notices, V. Elytra but slightly longer than the prothorax ; abdomen polished, very remotely and obsoletely punctulate nanus exiguus Elytra much longer than the prothorax ; form broader, the abdomen strongly reticulate, tinely, more densely and subgranularly punctulate. tetracarinatus It will be observed that the species are not quite as abundant as in the European fauna, but others will probably be discovered as these obscure little insects are seldom collected. Four of the twenty -three are common to the two continents. O. SCUlptus Grav. — Mon., p. 191 ; mosrens Mels. : Proc. Ac. Phila., II, p. 42 ; antennatiis Steph. ; lonyicornis Mann. ; testaceipennis Fairm. The head in both sexes is small, narrower than the prothorax, with a single median impressed channel toward base and large eyes. The prothorax is moderately transverse, with three distinct impressed channels, the elytra increasing in width from base to apex, a little wider and much longer than the prothorax, rather coarsely, subrugosely sculptured. The mentuni has a fine arcuate discal groove extending from one basal angle to the other. Length 3.4-4 0 mm.; width 1.0-1.1 mm. This species is represented in my cabinet from Iowa, Wisconsin, California and Europe. The European and American forms do not differ at all. The male appears to be much less abundant than the female. O. insignitus Grav. — Mon., p. 188; americanus Mann.: Brachel., p. 48. In the male of this species the head is large, slightly wider than long, with the eyes at their own length from the basal angles, the antennae about one-third longer than the head, exclusive of the man- dibles, the latter very long, decussate, almost evenl}^ arcuate and acutely pointed, the frontal porrect process acute and simple. In the female the head is very much smaller, transverse, with the frontal margin not armed, the eyes about equally large but almost attaining the base, the antennae fully one-half longer than the head and the mandibles much smaller, thicker and more strongly arcuate. The mandibular tooth is situated at nearly the same distance from the base in both sexes, but is very much nearer the apex in the female. In the male the head, prothorax and elytra are nearly equal in width and the elytra are distinctly longer than the pro- thorax, strongly and rather closely punctured. It occurs through- Goleopterological Notices, V. 385 out the Atlantic States from New York to Texas and far into Mexico. Leugth 2.4-3.0 mm.; width 0.75-0.9 mm. O. munitllS n. sp. — Parallel, stout, flavate, the pronotum darker, rufes- cent ; head and abdomen still darker, piceous ; antennse black, pale toward base ; mandibles and legs pale ; integuments polished throughout ; pubescence very sparse, the abdominal setae rather long ; head impunctate and polished, except near and at the sides, where there are some coarse elongated snbrugi- form punctures, the under surface impunctate ; pronotum coarsely, very sparsely, rugosely, the elytra also coarsely sparsely and unevenly punctate ; abdomen minutely, sparsely punctulate. Head v^irj large, as wide as the pro- thorax, slightly wider than long, with a very large uneven smooth impression at each side at about lateral third, the frontal margin abruptly prolonged in a short acute porrect spine ; eyes moderately convex, at very much more than their own length from the basal angles ; tempera behind the eyes nearly straight and feebly divergent, then broadly ronnded to the neck which is three-fifths as wide as the head ; mandibles very long, nearly straight, arcuate at apex, toothed near the base ; antennje only slightly longer than the head exclusive of the mandibles, the basal joint large, stout, constricted at base, nearly as long as the next four, second a little shorter and stouter than the third, which is longer than the fourth, the latter slighrtly elongate-oval, five to eight increasing rapidly in width, eight to ten equal, moderately transverse, eleventh small, conoidal, not as long or wide as the preceding two. Pidhwax short and transverse, nearly twice as wide as long, the sides strongly conver- gent from apical fifth to the basal angles, which are very obtuse and nearly obsolete, the edges feebly crenulate and with a slight sinuation just before the basal angles ; apex broadly bisinuate ; apical angles well marked ; disk strongly trisulcate, broadly impressed toward the sides. Ehjtra two-fifths wider than long, equal in width to the prothorax and fully two-fifths longer ; sides snbparallel, feebly arcuate ; humeri broadly, transversely exposed at base ; suture broadly, strongly margined ; disk of each broadly impressed along the middle. Abdomen short, nearly as wide as the elytra, parallel, the border thin and deep. Length 3.0 mm. ; width 0.8 mm. Pennsylvania. This species is allied to insignitus, and resembles it strongly in the general form of the head and simple acute apex of the frontal process, but differs in the straight mandibles, eyes more distant from the basal angles and in the much coarser and sparser sculp- ture of the pronotum and elytra; the oblique rugae near the base of the head toward the sides in insignitus are wanting in munitus. The description is taken from the male, which is the only sex that I have seen. O. l>reviccps n. sp. — Moderately broad, parallel, dark brownish-testa- ceous ; mandibles and palpi concolorous ; elytra and legs flavate ; antenuje 386 Coleopferological Notices, V. black, flavate at base; head blackish; abdomen dark piceous-brown, the apices of the segments paler. Head, exclusive of the mandibles, one-half wider than long, a little narrower than the prothorax, finely reticulate and alu- taceous, minutely, sparsely punctate, strongly, longitudinally rugose toward the sides, broadly biimpressed, the impression as usual very deep within the antennal tubercles ; eyes moderate, at lesfe than their own length from the basal angles, the tempora feebly divergent behind them ; basal angles broadly rounded ; mandibles moderate, strongly, evenly arcuate, decussate ; frontal porrect process notched at tip ; antennae fully one-half longer tlian the head, nearly as in insignitus and munitus. Prothorax fully three-fourths wider than long, the apical angles nearlj' right, distinct ; sides thence nearly straight, feebly divergent for a short distance, then rather strongly convergent to the broadly rounded basal angles ; edges finely crenulate ; disk strongly trisul- cate, broadly impressed laterally, rather closely, strongly punctate. Elytra very short, strongly transverse, at base as wide as the prothorax, at apex a little wider, the suture not longer than the prothorax ; humeri transverse at base; disk scarcely impressed, strongly distinctly and closely punctate. Abdomen parallel, very slightly narrower than the elytra, minutely feebly and sparsely puuctulate. Length (extended) 3.0-3.5 mm. ; width 0.7-0.9 mm. New York (Catskill Mts.). The description is taken from three males, which are perfectly similar among themselves, except that the notch in the tip of the frontal process varies in size, in some specimens being- very narrow. The female greatly resembles the female of insignitus, except that the eyes are somewhat less basal, the elytra shorter and the neck a little wider. O. COliTergens Lee. — Trans. Am. Ent. Soc , VI, 1877, p. 236. Head in the male large, at base rather wider than the prothorax, coarsely, rngosely pnnctate, with a large apical concavity, the eyes convex, at their own length from the basal angles, the tempora strongly divergent behind the eyes, the frontal margin slightly pro- duced in a short broad truncate process; antennfe a little longer than the head, the tenth joint slightly wider than long. Prothorax nearly twice as wide as long, deeply trisulcate, broadly impressed laterally, strongly, rather closely punctate. Elytra a little longer and wider than the prothorax, strongly, moderately closely punctate. Length 3.8 mm.; width 1.1 mm. Georgia and Florida. The mentum is as usual composed of three parts, the basal lim- ited by a deep groove, trapezoidal in form, extending from one basal angle to the other and advancing anteriorly more than one- half the entire length, the apical consisting of a narrow transverse Coleopterological Notices, V. 387 senn-membranous margin. In the male the sixth ventral plate has two small feeble teeth on the apical edge, separated by one-third of the total width ; the seventh is prolonged in the middle in a ligiili- form process which is as long as wide, gradually narrowed toward the truncate apex, the surface of the segment perfectly flat and even throughout, except a very feeble swelling at the tip of the ligula. O. fuscipeiinis Mann. — Bull. Mosc, 1843, II, p. 233. Black, the elytra rufescent ; legs pale brown ; surface highly pol- ished, the punctures strong but rather sparse, closer and feebly sub- confluent on the elytra. The head in the male is large, about as wide as the prothorax, with a large deep apical concavity, the middle of the frontal edge broadly sinuate, the sinuation limited by rather prominent angular projections ; eyes rather small, at nearly twice their length from the neck, the tempora evenly, strongly arcuate from the eyes to the neck ; antennae a little longer than the head, the outer joints strongly transverse. Prothorax not twice as wide as long, deeply trisulcate, also longitudinally, ob- liquely impressed toward the sides. Elytra a little wider and dis- tinctly longer than the prothorax. Length 4.0 mm. ; widih 1.2 mm. Alaska to California. The sixth ventral is not modified, the seventh abruptly produced in the middle in a gradually narrowed ligula, a little longer than wide, subtruncate at apex, the surface of the segment thrown up in the middle at the base of the ligula in a short transverse ridge which is steep behind, gradually declivous anteriorly, the summit of the ridge scarcely one-half wider than the apex of the ligula, with its lateral limits very acute, each bearing a stiff seta ; surface of the ligula perfectly flat throughout. The transverse groove of the mentum attains the middle of the length, is parabolic in form and interrupted in the middle. In connection with this species, I do not understand the reference by Mr. Fauvel to laqueatus Marsh., as the sexual characters in my representative of that species are altogether different, nor to lutei- pennis Erichs., by Dr. Sharp in the "Biologia," as that species is stated by Erichson to have the sixth ventral plate bituberculate at apex. I think there can be no doubt that I have correctly identi- fied Mannerheim's species, as there seems to be none other at all like it found in Alaska. There is a large series in my cabinet. Dr. LeConte confounded with this species one or more eastern 388 Coleopterological Notices, V. forms, and the indicated sexual characters of the male (1. c, p. 285) must surely have been inadvertently taken from a specimen of 0. sculjytus. O. liiniilis n. sp. — Stout, black, polished, the elytra dark rufous; legs and basal parts of the aiiteiiiise pale ; integuments glabrous, with a few erect stiff setae, the two occipital distinct. Head just visibly narrower than the prothorax, nearly as long as wide, strongly but rather sparsely punctate, broadly concave anteriorly, the frontal margin very broadly, feebly produced and slightly sinuate, with the lateral angles obtuse; eyes convex; tempora strongly arcuate from the eye to the neck, one-half longer than the former and equally prominent ; neck two-thirds as wide as the head ; antennae one- third longer than the head, the outer joints rapidly incrassate, basal joint long, stout and cylindrical. Prothorax not quite twice as wide as long, widest scarcely before the middle ; sides broadly rounded, convergent and sinuate posteriorly, the basal angles prominent ; base arcuate ; apex truncate, feebly sinuate laterally ; disk strongly trisulcate, strongly, longitudinally impressed sublaterally ; strongly but sparsely punctate. Elytra s little wider and dis- tinctly longer than the prothorax; sides feebly divergent ; humeri exposed; base broadly eraarginate in circular arc ; disk flat, coarsely, closely punctate, the punctures becoming slightly confluent along the middle of each. Abdomen slightly narrower tlian tiie elytra, almost impunctate, minutely, sparsely punctulate toward base. Length 5.0 mm. ; width 1.25 mm. Pennsylvania. The male from which the description is drawn, has two extremely obsolete dentiform subapical elevations on the sixth ventral plate, separated by one-fifth of the entire width, the seventh abruptly pro- duced in the middle in a short gradually narrowed ligula, much shorter than wide, with its apex slightly thickened, beveled and transversely truncate, the surface of the segment and ligula per- fectly even and flat throughout, the eighth narrowly, deeply im- pressed throughout the length along the median line. This species is allied to fuscipennis, but differs in the male sexual characters and antennal structure. O. niontanilS n. sp. — Stout, black, glabrous, highly polished through- out, the elytra scarcely visibly rufo-piceous ; legs piceous-black, the tarsi paler ; antennae scarcely paler at base. Head slightly narrower than the prothorax, distinctly shorter than wide, strongly, not densely punctate, the mandibles stout, arcuate, the apical concavity large, transverse ; frontal margin very broadly, feebly produced, distinctly sinuate, with rather promi- nent angles ; eyes moderate, prominent ; tempora strongly arcuate from the eyes to the neck, not twice as long as the eye and rather more prominent ; antennae one-half longer than the head, strongly incrassate, the eleventh Coleopterological Notices, V. 389 joint barely as long or wide as the preceding two, basal joint slender, feebly- constricted toward apex. Prothorax twice as wide as long, the sides broadly, evenly arcuate from apex to base, parallel nearly to the middle, then conver- gent to the basal angles which are obtuse and scarcely evident ; base broadly arcuate ; apex truncate, the sinuations distant and very feeble ; disk strongly trisnlcate, broadly impressed toward the sides, strongly but not densely punctate throughout. Elytra as wide as the prothorax and distinctly longer ; sides almost parallel ; humeri feebly exposed ; disk strongly, evenly, not densely punctate throughout, the punctures tending to unite longitudinally. Abdomen a little narrower than the elytra ; sides parallel and slightly arcuate ; punctures minute, rather numerous toward base, very remote and obsolete toward apex. Length 3.6-4.0 mm. ; width 1.1-1.2 mm. California (Lake Taiioe). This species is allied Xo fui^cipennis, differing in the more strongly and less sparsely punctured integuments, dark elytra and legs, rounded sides of the prothorax with nearly obsolete basal angles, and in the male sexual characters. The sixth ventral plate is not modified, the seventh abruptly produced in the middle in a very short gradually narrowed ligula, much wider than long, with the apex feebly sinuato-truncate, the angles rounded, its surface tumid and widely beveled toward apex, the surface of the segment with two approximate subconfluent setigerous tubercles at some distance anterior to the base of the ligula, and distant by less than the apical width of the latter. O. illTeilllstus n. sp. — Stout, black, highly polished and glabrous, the elytra dark piceous ; legs and basal joint of the antennae pale ; sparse erect set^e long and distinct. Head small, wider than long, distinctly narrower than the prothorax, deeply concave at apex, the median parts of the clypeus flat, with the apical margin broadly sinuate and biangulate ; punctures strong but sparse ; ej'es moderate, convex ; tempora strongly, evenly arcuate to the neck, but slightly longer than the eye and not more prominent ; antennae one- half longer than the head, strongly incrassate, the first joint long, slightly contorted and broadly constricted near the apex ; tenth scarcely one-third wider than long, eleventh small, not as long as the two preceding. Pt-othorax not twice as wide as long, widest at the middle, the sides parallel, evenly, broadly arcuate throughout ; base and apex very nearly equal ; basal angles broadly obtuse but not blunt; disk strongly trisulcate, broadly and strongly impressed sublaterally, strongly but rather sparsely punctate, the punctures line on the median ridges. Elytra distinctly longer tlian the prothorax, at base equal in width, at apex a little wider ; disk strongly but rather sparsely, nearly evenly punctate. Abdomen distinctly narrower than the elytra ; sides parallel, feebly arcuate toward apex ; surface subimpunctate ; border rather deep, moderately thin. Length 3.7 mm. ; width 1.1 mm. 390 Coleopterological Notices, V. Marj^land. The small head may be exceptional and an individual feature in the unique type, for it varies a good deal m fiiscipennis ; I find, however, that the sexual characters at the ventral apex are very nearly constant, whatever may be the size of the head. The present species is allied closely to fascipennis, but differs in having two small feeble tubercles at the apex of the sixth ventral plate, sepa- rated mutually by only one-eighth or one-tenth of the entire width, also in the parallel sides of the prothorax. The seventh ventral is abruptly produced in a narrow, gradually almost parallel, narrowly truncate ligula, longer than wide, with the surface at apex broadly and feebly beveled, the surface of the segment at the base of the ligula acutely and confluently bituberculate and bisetigerous. The transverse grove of the mentum is entire and in the form of a cir- cular arc, O. pennsylTanicus Erichs. — Gen. Staph., p. 792; Lee: Trans. Am. Ent. Soc, VI, p. 235. Dark rufo-piceous, the elytra, legs and basal parts of the antennae pale, brownish-flavate ; surface polished, glabrous. Head scarcely visibly narrower than the prothorax, transverse, the frontal margin not produced, broadly arcuate in the middle ; antennae not quite as long as the head and prothorax, moderately incrassate. Prothorax three-fourths wider than long, widest at the middle, the sides almost evenly arcuate ; base and apex subequal ; disk finely, sparsely punc- tate like the head. Elytra slightly wider and distinctly longer than the prothorax, rather sparsely, not coarsely punctate, a broad me- dian area of each feebly impressed and more closely punctured. Abdomen parallel, distinctly narrower than the elytra, subimpunc- tate. Length 3.4-4.4 mai. ; width 0.15-0.95 mm. New York to the Gulf States. The sixth ventral plate of the male has at apex two small tubercles, distant by one-sixth of the entire width ; the seventh is feebly produced in a gradually narrowed, short flat ligula, much wider than long, with its apex emarginate, and the surface of the segment at the base of the ligula is obtusely elevated in the form of a short, transverse, anteriorly arcuate ridge, the highest point of which is the middle and not the setigerous lateral extremities as in fuscipennis and its allies. The arcuate line of the mentum is very fine and is subinterrupted in the middle. The head in the female is much smaller than in the male, with the eyes relatively larger. Coleopter'ological Notices, V. 391 O. incollimis Ericbs. — Gen. Staph., p. 791 ; Lee: 1. c, p. 235. Head black; prothorax and abdoraen dark brownish-rufous; elytra and legs pale flavate ; antennae rufo-fuscous, slightly paler toward base ; integuments polished, glabrous, very finely, sparsely punctate, the elytra a little more coarsely and deeply, the abdomen finely punctate and sparsely clothed with short, stiff pubescence. Head and prothorax without longitudinal grooves, the antennae moderately incrassate, the tenth joint in the male strongly trans- verse, the eleventh unusually long, equalling the preceding three. Elytra equal in length and width to the prothorax. Abdomen parallel, a little narrower than the elytra, the border rather thin and deep. Length 3.5 mm.; width 1.0 mm. Southern States. One of the most distinct and isolated of our species, easily known by the characters given above and by the parallel and feebly arcuate sides of the prothorax. The sixth ventral of the male has at apex two feeble, broadly cuspiform tubercles, separated by between one- sixth and one-eighth of the width, the seventh produced in a flat ligula, a little wider than long, with the sides rapidly convergent to the feebly sinuato-truncate apex, the surface not beveled at its apex, and the surface of the segment perfectly flat and even throughout. O. rugOSUS Fabr. — Syst. Ent., p. 267 ; hasalis Mels.: Proc. Ac. Nat. Sci., Phila., II, p. 41 ; rugulosus Harris nee Say. This fine species is too well known to need extended notice ; the American specimens do not differ at all from the European, except perhaps in the less finely substrigose sculpture of the head. The head is large in the male, with the antennae as long as the head and prothorax, the outer joints not at all transverse and the eleventh much shorter than the two preceding. Prothorax arcuately nar- rowed from near the apex, as wide as the elytra and fully three- fourths as long. Abdomen minutely granulato-reticulatef and dull. Length 4.2-5.0 mm.; width 1.0-1.1 mm. United States and Europe. I have not seen it, however, from the Pacific Coast. The mentum differs greatly from that of fuscipennis and the other allied species preceding, having no trace of the transverse groove ; it is rectangular, twice as wide as long, finely, densely granulato-reticulate and dull, with a wide membranous apical margin. The male sexual characters are also of a different type, the fifth ventral having a strong porrect median tooth, the sixth a 392 Coleopferological Notices, V. feebly elevated bisinuate subapical elevation, and the seventh is deeply, almost equally and angularly biemai'giuate. O. niger Lee— Trans. Am. Ent. Soc, VI, 1877, p. 235. Parallel, rather narrow, somewhat convex, polished, black throughout, the antennae not at all paler at base; legs dark red- dish-brown. Head slightly transverse, convex, a little narrower than the prothorax, impressed only at the inner side of the anten- nal prominences, the frontal margin finely beaded, transversely truncate; punctures fine but strong, not dense; eyes very small; tempora large, rounded, more prominent than the eye ; antennae as long as the head and prothorax, feebly incrassate, the basal joint long, cylindrical, narrowed gradually toward base, tenth very slightly transverse, eleventh nearly as long as the preceding two. Prothorax two-thirds wider than long, narrowed behind from near the apex, trisulcate, the median sulcus deeper, scarcely impressed toward the sides, not very coarsely but strongly, sparsely punctate. Elytra equal in width to the prothorax but not quite as long, rather coarsely but sparsely punctate, somewhat uneven. Abdomen very remotely and obsoletely punctulate, rather coarsely so and distinctly pubescent beneath. Length 3.3 mm.; width 0.75 mm. California (San Francisco and Lake Tahoe) ; British Columbia — LeConte. The sixth ventral plate of the male is obtusely tuberculate at its centre, and also has, on the disk near the posterior edge, two small erect very approximate tubercles arranged transversely, the seventh broadly biemarginate, the median lobe broadly rounded, the eighth not longitudinally impressed. The mentum is transverse, shining though transversely rugulose, impressed along the basal margin, and with the usual pale semi-membranous apical piece. O. placiisimis Lee. — Trans. Am. Ent. Soc, VI, 1877, p. 237. Pale reddish-brown throughout, the head and abdomen more piceous but only slightly darker ; punctures rather coarse, very dense, forming long anastomosing rugae, the depressed flat front of the head between the antennal prominences shining, almost im- punctate; tergum subimpunctate but strongly reticulate and dull toward base; integuments glabrous, the tempora, and especially the venter, distinctly pubescent. Head narrower than the protho- rax, as long as wide, subquadrate ; eyes small, convex, at the middle ; antennae feebly incrassate, one-half longer than the head. Coleopterological Notices, V. 393 Prothorax rectangular, one-half wider than long, the sides parallel, very feebly arcuate ; median groove feeble, the others almost com- pletely obsolete. Elytra distinctly wider and longer than the pro- thorax, flat. Length 2.5 ram. ; width 0.75 mm. District of Columbia. Of this distinct and myrmecophilous species I have only seen the female. The mentum is smooth and polished, with a trans- verse, feebly arcuate broad and irregularly eroded subbasal groove, and the usual membranous apical margin. O. densus n. sp. — Parallel, rather narrow, strongly shining, glabrous, tlie tergum with very minute sparse hairs, the venter minutely and extremely remotely pubescent ; pronotum rufous ; elytra darker, piceous ; head and abdomen black ; legs pale flavate ; antennae blackish, pale toward base ; punctures throughout the head, pronotum and elytra rather coarse, very dense, subcoalescent ; separated longitudinally by anastomosing rugae, the front between the antennal prominences shining and subimpunctate ; abdo- men polished throughout, very minutely remotely and obsoletely punctulate. Head very slightly narrower than the prothorax, a little wider than long, the occiput feebly, remotely biimpressed at base only; eyes small, convex, at one-half more than their own length from the basal angles ; tempora nearly straight and parallel behind them to the rounded basal angles, thence sub- transverse to the neck ; antennae nearly as long as the head and prothorax, the basal joint cylindrical, as long as the next three, second much stouter than the third, outer joints moderately incrassate, tenth one-half wider than long, eleventh as wide and long as the two preceding, ogival. Prothorax nearly twice as wide as long, widest near apical third, the sides parallel, broadly, evenly arcuate from the apex to the antebasal notch, the latter distinct; base narrower than the apex, arcuate, the latter truncate ; disk tmusually convex toward the middle, the median groove deep, the others obsolete, not impressed toward the sides. Ehjtra slightly wider and much longer than the prothorax ; sides divergent, broadly arcuate behind ; humeri exposed ; disk flat. Abdomen a little narrower than the elytra ; sides parallel ; border moderately deep, rather thin toward base, gradually very thin behind the middle. Length 1.9-2.1 mm. ; width 0.5 mm. Maryland ; Texas. Possibly also myrmecophilous, somewhat resembling placusinns but much smaller, with the abdomen polished, much less pubescent beneath, and the prothorax short, narrowed and laterally emargi- nate near the base. The female has the head smaller and shorter and the eyes relatively larger, situated at not more than their own length from the base. In the male the seventh ventral plate is broadly bisinuate at apex, the median lobe feeble but obtusely an- Annals N. Y. Acad. Sci., VII, Nov. 1893.— 26 394 Coleopterological Notices, V. gulate, the eighth not distinctly impressed. The mentuni is nearly as in placiisinus, but with a deeper, more even, feebly arcuate and unusualy coarse subbasal groove. Numerous specimens. O. alpicola n. sp. (Fauvel MS.) — Broad, flat above, dull, very densely sculptured, black througliout, the autenuse slightly paler toward base ; legs dark rnfo-testaceous ; integuments deeply, densely but not very coarsely punctate, the punctures separated by longitudinally anastomosing rug?e throughout, the small depressed clypeus between the antennal prominences more feebly sculptured and somewhat shining ; abdomen coarsely, strongly reticulate and dull, feebly, sparsely punctate and sparsely clothed with short hairs, which are more distinct but not at all closer on the polished under sur- face. Head subquadrate, nearly as long as wide, quite distinctly narrower than the prothorax, longitudinally trisulcate, the median impression narrow and distinct, the lateral broad and feebler ; eyes small, at fully one-half more than their own length from the basal angles ; tempera divergent and nearly straight behind them, broadly rounded behind, becoming transverse near the neck, which is narrow, only three-fifths as wide as the head ; antennje gradu- ally, moderately incrassate, scarcely one-half longer than the head, the basal joint as long as the next three, second longer and thicker than the third, tenth one-half wider than long, eleventh fully as wide but not quite as long as the preceding two, obtusely ogival. Prothorax about twice as wide as long, the sides parallel and feebly arcuate, becoming strongly convergent in basal half, the basal angles very obtuse, almost obliterated ; disk trisulcate, the median sulcus distinct and entire, the lateral partial and broadly impressed, scarcely at all impressed toward the sides. Elytra equal in width to the prothorax and nearly one-half longer, one-third wider than long ; sides subparallel, feebly arcuate ; humeri slightly exposed ; disk flat, not at all impressed at the suture near the base. Abdomen subequal in width to the elytra. Length 2.1 mm. ; width 0.7 mm. Colorado. The male is the only sex examined ; it has very feeble abdominal characters, the seventh ventral plate being transversely truncate throughout its width, shorter than the dorsal plate, the infolded sides of which are visible laterall}^ beyond its apex. The mentum has no groove, but a depressed basal area, extending beyond the middle and bounded anteriorly by an arcuate line from angle to angle, which is.evenly, transversely rugose; anterior part polished, devoid of sculpture; apical membranous margin fine. O. nitidlllllS Grav. — Micr., p. 107; punctatns Lee: Tr. Am. Ent. Soc, VI, p. 236 ; rugulosus Gemm. et Har. nee Say. Elongate, slender, parallel and rather depressed, shining, strongly but not densely punctate, black, the legs pale; elytra rufo-testaceous, Coleopterological Notices, V. 395 generally more or less infumate toward base. Head in the male nearly as wide as the prothorax, obsoletely trisulcate, the eyes at their own length from the basal angles, the tempora slightly divergent behind them and a little more prominent. Prothorax trisulcate, the median sulcus deep and narrow, the lateral broad and very feeble, also broadly impressed toward the sides. Elytra a little wider and distinctly longer than the prothorax. Leng'th 2.1-2.9 mm.; width 06 mm. Pacific Coast and Siberia to Western Europe. The male seems to be much less abundant than the female and has rather feeble sexual modifications, the sixth ventral plate being broadly and just visibly sinuate toward the middle, and the seventh moderately bisinuate. The groove of the mentum is feebly arcuate, very deep and somewhat uneven. A male which I took in the Sta, Clara Valley, California, has longer elytra, at least one-half longer than the prothorax, but does not differ much otherwise. According to Mr. Fauvel the Mexican 7'ugidosus of Say and car- bonellus Solksy, are identical. O. Slispectiis 11. sp. — 0. tiitidnlus Lee. nee Grav. : Trans. Am. Ent. Soc., VI, p. 237. — Parallel, polished, blaenni» Head minutely and remotely punctate especially toward the middle ; antennae with the joints rather shorter and more coarsely pubescent ; sides of the prothorax very strongly constricted behind, deeply sinuate, becoming subparallel toward base; male with the sixth segment some- what lobed in the middle, the anterior tarsi more noticeably dilated ; size much smaller — % castanea It is possible that fa sconigra Miikl. may be the same as cavicollis or longipalpus, but considering the remote locality and the undoubted plurality of species in the genus, the chances are decidedly against such identity. T. rufitai'Sis n. sp. — Rather shining, black throughout, the trochanters and tips of the coxae feebly rufescent ; pubescence dense, suberect, consisting of longer stifFer and more erect, and shorter and finer hairs, confusedly inter- mingled especially on the elytra. Head finely, densely punctate, distantly biimpressed between the eyes, transversely impressed between the antennae, the latter slender, filiform, black, not at all incrassate, more than one-half as long as the body, the joints fully three times as long as wide and feebly obconical ; eyes well developed, prominent ; tempora very short ; ocelli small, separated by two-fifths the entire width ; fourth palpal joint one-half longer than the second and much more than twice as long as the third in both sexes. Prothorax small, one-third wider than long, widest and laterally subangulate at two-fifths from the apex ; sides thence to the base convergent and evenly sinuate throughout, to the apex more feebly convergent and broadly arcuate ; basal angles nearly right but slightly blunt; disk finely, densely punctate, even though ft-ebly distantly and obliquely biimpressed at basal third, and with a large deep impression at each side at the middle; surface anteriorly broadly, evenly convex from one lateral edge to the other, the side margins 404 Coleopterological Notices, V. not at all explanate even near the basal angles. Elytra in the male two and one-half times as long as the prothorax, in the female nearly three times as long, longer than wide, near the apex almost twice as wide as the prothorax ; sides nearly straight, feebly divergent, external apical angles very broadly rounded and oblique ; punctures fine but strong, dense. Scutellum more finely and extremely densely punctate. Abdomen very short behind the elytra, extremely minutely, densely punctulate. Leys slender. Length (j.0-6.3 mm. ; width 2.3-2. (j mm. California (Siskiyou Co.). The male has the intermediate tibife very feebly swollen, slightly constricted in apical fourth, the constricted part glabrous; in the female the same tibiae are more slender and have the glabrous ter- minal part scarcely at all constricted but occupying almost one-third of the total length. Three specimens. T. breTipeiinis n. sp. — Strongly shining, castaneous, the legs and coxse paler, rufous ; pubescence fine, moderate in length, abundant and uni- form. Head finely, densely punctate, nearly as in ritfitarsis, the fourth palpal joint fully twice as long as the third and one-half longer than the second ; antennae veiy slender, filiform, rufous, three-fifths as long as the body, the joints very elongate, scarcely perceptibly obconical, the tenth very nearly three times as long as wide. Prothorax one-half wider than long and one-half wilier than the head, widest and obtusely subangulate at tlie sides just before the middle ; sides thence to the base convergent and feebly sinuate, becoming more sinuate only extremely near the basal angles which are right and not blunt, to the apex feebly convergent and slightly arcuate; apex feebly bisinu- ate ; disk finely, closely punctate, not at all impressed on the disk near the base, the lateral impression large but only moderately deep ; sides broadly, feebly reflexed from the bind angles past the fovea to apical fourth. Elytra not quite as long as wide, four fifths longer than the prothorax, and, near the apex, two-fifths wider than the latter ; sides nearly straight and divergent from the exposed but rounded humeri nearly to the apex ; disk strongly, moderately densely punctate. Abdomen short, very minutely, densely punc- tulate. Legs very long and slender. Length (3.5 mm. ; width 2.6 mm. Wyoming. The single male before me has the intermediate tibias slender and almost evenly cylindrical, with the glabrous apical part extremely short and not in the least constricted, differing greatly in this re- spect from rujitarsis. T. castanea n. sp. — Less broad, strongly shining ; castaneous ; legs and antenn* rufo-testaceous ; pubescence fine, dense, uniform and inclined. Head finely puTictate, sparsely so toward the middle, otherwise as in mfitarsis but with rather longer and more angulate tempora ; antennae filiform, three-fifths Coleopterological Notices, V. 405 as long as the body, stouter than in hreripennis, the outer joints more strongly obconical, the tenth scarcely more than twice as long as wide. Prothorax minutely but closely, strongly and evenly punctate, evenly convex, nearly as in brevipennis but with the sides broadly constricted toward base, becoming nearly parallel for some distance before the basal angles, which are right and not blunt; base broadly, feebly sinuate, narrower than the apex, the latter feebly bisinuate; disk simply feebly subexplanate from the fovea to the basal angles, not in the least reflexed, declivous to the edge from the lateral obtuse angulations to the apex; lateral fovese large and very deep, the bottom punc- tiform. Scutellum large, very densely and more finely punctate. Elytra as long as wide, not quite twice as long as the prothorax, and, near the apex, about one-fourth wider ; humeri broadly rounded to the base of the prothorax, but slightly exposed at base ; sides straiglit, divergent ; disk strongly, evenly, moderately closely punctate. Abdomen subobsoletely punctulate. Lecjs moder- ate in length, stouter and shorter than \\\ brevipennis. Length 4.7-5.0 mm. ; ■width 1.9-2.0 mm. Colorado. The two specimens represent a species allied to hi^evipennis but differing in the much smaller size, relatively longer elytra, stouter antennfe and legs, deeper pronotal impressions and nnreflexed lateral edges of the pronotura, as well as in the sparser, finer punctures of the head and the male sexual characters at the ventral apex. The anterior tarsi of the male are more strongly dilated toward base than in brevipenins, and both the anterior and intern)ediate are papillose beneath. As in rvfitarsis the elytra are distinctly longer in the female than in the male. OROBAXUS LeConte. In view of the radical difference in palpal structure, the approxima- tion of this genus to Lesteva is very remarkable. It resembles Les- teva in the very slender cylindrical posterior tarsi, with the basal joint subequal to the next two, in the filiform antennae, duplex labrum, and in general appearance, but the spinules of the tibiae are replaced by a few long slender flexible setae, and the maxillary palpi are short stout and densely pubescent, with the fourth joint small slender and subulate. The pronotum is feebly impressed at the sides, thus con- forming partially to the general law affecting all the Californian allies of Lesteva. The tl»ree species may be separated as follows: — Eyes smaller, subequal in size to the tempora and not more prominent ; out- line and humeri as in njipes. Rocky Mts simulator Lee. 406 Coleojyterolofjical Notices, V. Eyes larger, much longer and more prominent than the tempora. Elytra with the sides strongly divergent from the humeri, which are obliquely rounded to the prothorax. Pacific fauna rilfipes Csy. Elytra with the sides feebly divergent, the humeri much more broadly ex- posed, becoming transverse at base near the prothorax. Sonoran fauna. densiis Csy. All of these species are minutely, very densely punctate and pubescent. GEODROMICVS Redt. The members of this genus include some of the larger of the Omalini and are abundant in the western parts of North America. As remarked by Mr. Fauvel, the form of the body recalls Lesteva, or, it might be added, Orobanus, rather than Anthophagus with which the species were united by Gemminger and Harold; in the structure of the palpi they are somewhat intermediate between Orobanus and Anthophagus and differ greatly from Lesteva. The posterior tarsi, however, with the first four joints short and stout, together scarcely longer than the fifth, will at once distinguish the genus from Anthophagus. At the same time, integer, although perfectly normal in tarsal and palpal structure, seems to diverge in the direction of Anthophagus in the form of the prothorax, and a divergence in the same direction is also observable in the tarsus of debilis. The American species known to me may be distinguished by the following characters : — Prothorax never transversely quadrangular, the disk not at all explanate near the liind angles. Pronotum with a more or less distinct impression along the median line, the prothorax often much larger and of a ditferent form in the male ; last joint of the maxillary palpi longer, subulate and much narrower than the apex of the third, although frequently nearly as long as the latter. Larger species, pale castaneous, clouded with blackish toward the apices of the elytra, the abdomen paler and with a large blackish subapical cloud. Atlantic regions IbriimieilS Smaller, the abdomen black or slightly piceous and uniform in coloration. Sides of the prothorax deeply sinuate posteriorly, becoming subparallel near the base. Pronotum strongly and closely punctate, the prothorax much larger in the male than in the female. Elytra more finely, moderately densely punctate ; anterior tibise of the male slender, nearly equal in diameter throughout, fully twice as long as the tarsi, the latter moderately dilated. strictus Coleopterological Notices, V. 407 Eljtra more coarsely deeply and sparsely punctate ; antennae stouter ; anterior tibiae of the male shorter, thick, narrowed near the base and less than twice as long as the tarsi, the latter more dilated failTeli Pronotum more finely feebly and much more sparsely punctured ; discal parts of the elytra more or less indefinitely clouded with a paler rufescent tinge. Elytra shorter, with the sides very strongly divergent, coarsely, very sparsely punctate; abdomen with five exposed segments; border very wide ; size larger, the form broader — 9- OTipennis Elytra longer, the sides less divergent ; punctures finer and more abundant ; abdomen with scarcely more than four exposed segments; border narrower — 9 nul>ilatll8 Sides of the prothorax oblique and feebly sinuate behind, the base relatively wider ; small species, pale flavescent in color, the punctua- tion fine and sparse ; elytra small, much shorter than wide ; tarsi longer and more slender (lebilis Pronotum without trace of an impressed median line, almost similar in the male and female ; body intense polished black throughout. California. Tempora rounded but rather prominent and subrectangular ; prothorax wider than long ; punctures smaller and closer ; last joint of tlie antennae much longer than the tenth temporalis Tempora very convergent and broadly rounded, not at all prominent ; prothorax not distinctly wider than long, nearly as in Orobanus but more convex ; punctures strong and sparse ; last joint of the antennae only just visibly longer than the tenth ; last joint of the maxillary palpi smaller IlUIUIJOldtiailllS Prothorax transverse, nearly as in Anthophagus, the sides but feebly conver- gent behind and very feebly, broadly sinuate ; surface explanate toward the hind angles ; last joint of the maxillary palpi short, subulate ; posterior tarsi short, stout and normal integer G. 'brunneus Say. — Touru. Ac. Phila., Ill, p. 158 ; verticalis Say : Trans. Am. Phil. Soc, IV, p. 4tJ3 ; ctvsus Er. : Gren. Staph., p. 853. It is somewhat remarkable that Erichson should have failed to recognize in his ceesvs the species described by Say as brunneus, for the cloud of black near the apex of the tergum, in connection ■with the size of the body — slightly under a quarter of an inch or 6 mm. — is very characteristic of the species. Verticalis is prob- ably a smaller female specimen, the great difference in form of the male and female prothorax possibh' not having been noticed by Say. 408 Coleopterological Notices, V. G. Stricttis FvL— Kev. d'Ent., 1889, p. 126 ; nlgrita Fvl. nee Miill. : Not. Ent., 7, 1878, p. 90, Abundant from New York and Massachusetts to Michigan. Easily known by its black polished integuments and smaller size from hrunneus, the only other species inhabiting the same districts. G. faiiveli n. sp. — Stout, feebly convex, polished, dark and uniform pioeo-castaneous throughout ; pubescence sliort and very sparse. Head finely and sparsely punctate, three-fourths as wide as the prothorax ; eyes large and prominent, the tempora not one-half as long, rapiUly convergent and feebly arcuate ; vertex deeply impressed in the middle and with two short deep divergent grooves ; epistoma impunctate, deeply, arcuately impressed, the de- pression connected with the vertical impression by a feeble channel ; antennfe filiform but rather stout, nearly three-fifths as long as the body, the basal joint stout, twice as long as wide, second shorter than the fourth, third very much longer, obconical, three times as long as wide, eleventh one-half longer than the tenth. Prothorax one-half wider than long, the sides strongly, evenly rounded, rapidly constricted toward base, becoming parallel in basal fifth or sixth ; base truncate, one-third wider than the apex ; disk widest before the middle, deeply, rather coarsely and closely punctate, deeply impressed along the median line except near the apex, with a deep transverse pit before the scutellum. Elijtra scarcely as long as wide, as long as the head and prothorax, near the apex two-fifths wider than the latter ; sides straight, strongly diver- gent; humeri widely exposed ; humeral width scarcely four-fifths of the sub- apical ; punctures coarse, deep and not dense. Abdomen finely but not very densely punctate ; border moderate. Legs and coxae pale rufo-ferruginous ; under surface blackish-piceous. Length 5.8 mm. ; width 2.0 mm. Oregon (The Dalles). Allied to strictus but amply distinct in its broader form, much more divergent sides of the elytra, longer and stouter antennsB, and the sexual differences in the anterior legs, which are very marked. A single male. G. ovipeunis Lee— Bull. U. S. Geol. Surv., 1878, IV, ii, p. 452 ; FtI. : Not. Ent., 7, p. 89 ; plagiatus Fvl. nee Fab.: Rev. d'Eut., 1889, p. 125. The specimens of ovipennis which I have examined can be distin- guished very readily 1 think from plagiatus or nigrita by their broader form, much sparser punctures which are coarser on the elytra, the latter being much more abbreviated, and by the broader abdominal border. I have seen no North American examples which could be referred very satisfactorily to plagiatus. G. lilllbilatus n. sp. — Polished black with a feeble piceous tinge, the apex and lateral margins of the abdomen slightly paler ; legs, mouth parts Coleopterological Notices, V. 409 and antennae ferruginous ; elytra each with a rufescent cloud from near the humerus to the middle; pubescence fine, subrecumbent, sparse but rather long. Head fully four-fifths as wide as the prothorax, deeply impressed and bistriate in the middle between the eyes, the epistomal depression scarcely connected by a groove; eyes large, very convex, the tempora scarcely more than one-half as long, very convergent, broadly arcuate ; antennae three-fifths as long as the body, moderately stout, the outer joints not quite three times as long as wide, equal, eleventh one-half longer than the tenth. Prothorax not quite one-third wider than long, widest at apical third ; sides strongly constricted behind, becoming abruptly parallel in basal fifth or sixth ; base truncate, much wider than the apex ; disk finely, very sparsely punctate, feebly but distinctly impressed along the median line from the apical margin to the deep transverse antebasal fovea. E/i/tra not quite as long as wide, dis- tinctly longer than the head and prothorax ; humeri broadly exposed ; sides moderately divergent ; outer apical angles rather broadly rounded ; disk not coarsely, somewhat sparsely punctate, broadly impressed along the suture toward base. Abdomen barely as wide as the elytra and much shorter, polished, finely, sparsely punctulate ; border moderate. Length 4.4 mm. ; width 1.55 mm. New Mexico (Las Yegas). Distinguishable from ovipennis by its smaller size, longer elytra with much less divergent sides and many other characters. The fourth joint of the maxillary palpi in the single female before me is very nearly as long as the third, fusiform and gradually pointed, and by this character, as well as the stouter antennae and much finer, sparser punctures of the head and pronotum, it can be readily separated from plagiatus or any of its varieties. In the female of ovi2Jen7Hs the humeral width of the elytra is not more than three-fourths of the subapical, while in nubilatiis the ratio is fully four-fifths. G. debilis n. sp. — Highly polished, very sparsely and rather coarsely pubescent, pale flavo-testaceous. the head a little less pale and the abdomen picescent. Head scarcely visibly narrower than the prothorax, the eyes small, strongly convex, scarcely longer but very much more prominent than the tempora ; surface very finely, remotely punctate, the median impression and diverging lines distinct, not connected with the strong epistomal depres- sion ; ocelli extremely feeble ; fourth joint of the maxillary palpi almost as long as, but much narrower than, the obconical third; antennae rather stout, filiform, three-fifths as long as the body, the tenth joint twice as long as wide, three-fifths as long as the eleventh. Prothorax scarcely visibly wider than long, rounded at the sides anteriorly, feebly, gradually narrowed behind, feebly constricted at basal fourth ; disk finely, very remotely punctate, with a median impression attaining neither the apex nor the subbasal transverse fovea. Elytra small, three-fourths longer than the prothorax, and, near the Annals N. Y. Acad. Sci., VII, Nov. 1893.— 27 410 Coleopterological Notices, V. apex, twice as wide ; sides nearly sti-aiglit, very strongly divergent ; humeral width scarcely more than two-thirds of the subapical ; jnnicti;res rather strong but sparse. Abdomen well exposed, as wide as the elytra and rather longer, finely but not densely punctulate, the border moderate. Length 4.0 mm. ; width 1.5 mm. Colorado. The type appears to be a female, but the ventral apex is concealed so that I cannot be entirely certain. The tarsi are aberrant, the first three joints of the posterior more elongate than usual and de- creasing uniformly, the third and fourth subequal, fifth distinctly shorter than the first four together- — a variation in the direction of Anthophagus. This species is altogether distinct from any other in its small size, small eyes, almost obsolete ocelli; small elytra and many other characters. G« temporalis n. sp. — Moderately broad and depressed, polished, black throughout; legs, palpi and antennse black ; pubescence rather tine, sparse, of the usual length, shorter and much more abundant on the abdomen. Head distinctly narrower than the prothorax, tbe eyes large and strongly convex ; tempora unusually strongly rounded but much less prominent than the eyes ; vertexal impression distinct, the oblique grooves rather distant; epistoinal ■ depression large and strong; last joint of the maxillary palpi very much shorter and narrower than the third ; antennae filiform, rather more than one- half as long as the body, the outer joints strongly obconical, three times as long as wide, eleventh two-fifths longer than the tenth. Prothorax very slightly wider than long, widest at apical third where the sides are very evenly, strongly rounded to the apex, moderately convergent and feebly sinuate in -basal three-fifths; base truncate, a little wider than the apex; disk strongly, rather closely, evenly punctate, with the usual median ante- basal impression. Elijtra about as long as wide, twice as long as the prothorax and four-fifths wider ; sides feebly divergent from the transversely exposed .humeri, the humeral width fully four-fifths of tlie subapical ; disk very feebly, broadly impressed on the suture toward base as usual, strongly and somewhat closely punctate. Abdamen with about four and one-half exposed segments, a little shorter than the elytra and equally wide ; border wide ; stomata distinct. Legs rather short and somewhat stout ; tibiae gradually enlarged and more densely pubescent from base to apex; tarsi short, normal. Length 5.7-5.9 mm. ; width 1.75 mm. California (Sonoma Co.). The description is drawn from the male, which has the sixth ven- tral feebly sinuato-truncate at apex and the anterior tarsi strongly dilated. The female differs extremely little in general appearance, having the prothorax relatively smaller but identical in shape. Three specimens. Coleopterological Notices, V. 411 On the disk of the pronotum two very broad feeble parallel im- pressions can be discerned behind the middle, which unite with the transverse subbasal fovea ; these impressions are analogous to those of Anthophagus al2oestris Heer, and perhaps some other species j here, however, the disk is very convex and resembles Orobanus in outline, being not at all suggestive of Anthophagus in these re- spects. G. blimlioldtianus n. sp. — Depressed, highly polished, deep hlack ; coxEe and tarsi rufescent ; antennae black ; integuments strongly and sparsely punctate, the abdomen minutely and densely so ; pubescence sparse, suberect, uniform and coarse, moderately long, short subrecumbent and dense on the abdomen. Head as wide as the prothorax, as wide as long, strongly constricted at base, the constriction as usual extending sharply across the dorsal surface, where it is broadly, anteriorly angulate ; surface with a deep depression in median third between the eyes, limited laterally by oblique excavated lines, arcuately impressed between the antennae, the epistoma impunctate ; ocelli on a line with the posterior limits of the eyes distant by less than one-third of the total width ; eyes well developed, convex and very prominent ; tempora shorter, not at all prominent, convergent and arcuate ; antennae slender, fili- form, nearly three-fifths as long as the body, the joints fully three times as long as wide. Prothorax nearly as long as wide, the sides evenly rounded, becoming convergent and sinuate posteriorly, subparallel in basal fourth ; base truncate, rather wider than the apex ; disk widest at apical third, strongly, evenly convex, impressed in the middle near the base. Elytra twice as long as the prothorax, and, near the apex, twice as wide ; humeri rather broadly exposed, rounded; sides straight and strongly divergent; humeral width three-fourths of the subapical ; disk broadly, feebly impressed in the middle toward base. Abdomen with nearly four exposed segments, shorter than the elytra ; border wide, moderately inclined. Legs long and rather slender, finely, densely pubescent ; posterior tarsi less than two-fifths as long as the tibiae; claws long, slender, arcuate. Length 4.4 mm. ; width 1.65 mm. California (Humboldt Co.). The type is a male, having the sixth ventral short and broadly emarginate throughout at apex, the median segment of the seventh with a thin laminate carina in the middle toward base ; anterior tarsi moderately dilated. I obtained the unique representative on the under side of a small loose stone in the dry bed of a rivulet near Fort Gaston. This species differs from temporalis in its smaller size, still sparser and stronger punctuation, less prominent and more convergent tem- pora, and in the very strong median lamina of the seventh ventral, which is completely wanting in temporalis. 412 Goleopterological Notices, V. G. integer n. sp. — Broad, more parallel, feebly convex, polished, tlack throughout; tarsi, tibiae toward tip and femora toward base feebly rufescent ; pubescence moderate in length, inclined, rather abundant and distinct. Head scarcely more than two-thirds as wide as the prothorax, the eyes prominent ; tempora short, strongly convergent and arcuate ; median impression wide, the oblique grooves distant ; a median impressed channel connects the large deep epistomal depression ; last joint of the maxillary palpi subulate, very much iiarrowei- than the third and only one-half as long ; antennae filiform, three- fifths as long as the body, the joints very long, just visibly obconical, rather more than three times as long as wide, the eleventh but slightly longer than the tenth. Prothorax one-fourth wider than long, the sides evenly rounded anteriorly, feebly convergent and broadly, just visibly sinuate in basal half; base truncate, very wide, nearly one-half wider than the apex ; disk evenly, broadly convex, rather strongly, closely punctate, feebly explanate at the hind angles, without distinct median impressed line and devoid of ante-basal fovea. Elytra nearly as long as wide, two-thirds longer than the prothorax, and, near the apex, two-fifths wider ; humeri very slightly exposed at base, the humeral width but slightly exceeding that of the prothorax and about five-sixths of the subapical ; sides noticeably divergent ; outer apical angles rather broadly rounded ; disk finely, rather sparsely but distinctly punctate. Abdomen- scarcely as wide as the elytra and much shorter, with five exposed segments, minutely, sparsely punctate, the border moderate. Legs moderate in length and thickness ; tarsi normal. Length 6.0-6.3 mm. ; width 2.3 mm. Washington State. The male, which serves as the type, diflfers from the female only in its larger prothorax, the latter being however identical in shape ; in the female the elytra are nearly tw^ice as long as the prothorax and three-fourths wider. The male has the sixth ventral rather deeply sinuate at apex throughout the width, and the anterior tarsi strongly dilated. PELECOMALiriW Casey. This genus will include nearly all the North American species hitherto assigned to Amphichroum, and differs radically and con- stantly from the latter in the structure of the tarsi. The tarsi throughout have the penultimate joint deeply bilobed and clothed beneath with long papillose pubescence ; in Amphichroum they are slender, compressed, Avith the penultimate joint not at all wider and devoid of all trace of lobes, the fifth joint being inserted at its obliquely truncate apex. In the present genus the intermediate coxaj are contiguous, while in Amphichroum they are narrowly but perceptibly separated. Coleopterological Notices, V. 413 Pelecomalium also differs from Amphichroum in a singular palpal character, the sexual nature of which I did not notice until shortly- after ray original description appeared, and which lead to the assign- ment of the two sexes of modestum to different genera. In the male the fourth palpal joint is strongly securiform, while in the female it is slender, slightly compressed and gradually somewhat obliquely narrowed to the apex, where it is very narrowly but obliquely truncate. In Amphichroum there are no discoverable sexual differ- ences in the palpi, the last joint of which is stouter towai'd base and prolonged slender and cylindrical toward apex, differing no- ticeably from the form characterizing either sex of Pelecomalium. To Amphichroum there are but two described North American species assignable at present, viz. : maculatum Lee. (Stachy- graphis) which is quite homologous with canaliculatum, and Jioribundum Lee. {=^ fiavicorne Csy. 9 ), which is slightly aber- rant in sculpture and in its much longer and more slender maxil- lary palpi, agreeing however otherwise. I have in my cabinet a female taken at Lake Tahoe in June, which differs from the male of maculatum, as figured by Dr. Horn, in its broader form, much shorter and wider prothorax and uniformly flavate elytra ; there is no way of proving its identity, but in view of the limited number of specific forms assignable to Amphichroum in both con- tinents, and of the fact that in Jioribundum and some species of Pelecomalium the female is notably paler as well as broader than the male, I think there can be little doubt that it is the female of maculatum. The species are rather closely allied among themselves but may possibly be identified by the following tabular statement: — Punctures of the elytra more or less sparse, never extremely dense. Species of the Pacific coast fauna. Larger, not less than 4 mm. in length ; prouotum more or less alutaceous and subimpunctate. Prothorax transverse, fully one-half wider than long in the male ; body llavate, immaculate, the head and abdomen blackish. ..testaceiim Prothorax subquadrate, scarcely one-third wider than long in the male, testaceous, the head and abdomen black ; elytra each with a large elongate discal spot of black beyond the middle. ...;...'binotatllIIl Smaller, always much less than 4 mm. in length. Elytra extremely sparsely and obsoletely punctulate, tlie punctures scarcely distinguishable ; surface throughout highly ijolished. sparsum 414 Coleopterological Notices, V. Elytral punctures distinct and much less sparse. Abdomen black. Elytra piceo-fuscous piloselltini Elytra llavate, with a triangular scutellar spot of blackish. sciitatiiin Elytra clear and uniform pale llavate throughout. piiberiiliini Abdomen flavate, more or less clouded with piceous toward the middle and apex; elytral punctures very strong flaTesceilS Species of the Atlantic region. Polished ; prothorax transverse, subimpunc- tate ; elytra piceous in the male, with paler side margins, frequently wholly llavate in the female, the punctures sparse, feeble and ill-defined. laevicolle Punctures of the elytra exceedingly dense. Elytra normal, large, one-half or more longer than the prothorax. Dark in color, the sides of the elytra sometimes feebly and indefinitely paler and the lateral and basal edges of the pronotum testaceous. Ocelli small, clearly defined, more prominent and less distant. Prothorax in the female less transverse, two-fifths wider than long, more strongly narrowed toward apex, the sides more narrowly fiat and explanate near the basal angles ; elytra in that sex one-half longer than the prothorax opacillum Prothorax in the female nearly three-fifths wider than long, less narrowed toward apex and with the sides of the disk near the basal angles more broadly concave and refiexed ; elytra in that sex nearly three-fourths longer than the prothorax {veterator Csy. 9 )• modestiim Ocelli large, suflfused and distinctly more distant ; pronotum more strongly punctate ; antennae noticeably more incrassate. crassicoi'iie Pale in color and more rufoiis ; elytra often feebly infumate along the apex ; abdomen blackish ; pronotum very densely and distinctly punc- tate nearly like the elytra pallidum Elytra small, quadrate, distinctly less than one-half longer than the pro- thorax ; body dark, piceous-black in color, the sides of the elytra and base and side margin of the pronotum in basal two-thirds paler. aliitaceiini The Australian species assigned to Amphichroum, with their transverse anteunal joints, will in all probability also have to be separated generically. P. flavescens n. sp. — Rather broad, depressed, polished throughout, flavate, the abdomen black ; posterior portions of the head piceous ; antennae feebly infumate toward apex ; pubescence very minute, sparse and incon- spicuous. Head one-half as wide as the elytra, slightly wider than long ; eyes convex, well developed ; vertex and front flattened, the two divergent grooves ColeoiJferological Notices, V. 415 of the former distinct ; antennae slender, cylindrical, very feebly incrassate, one-half as long as the body, all the joints elongate, the eleventh cylindrical in basal half, thence conical to the pointed apex. Prothorax transverse, on«- half wider than long, the sides broadly, almost evenly arcuate; apex four- fifths as wide as the base ; disk impunctate but with small scattered punctures near the basal margin, broadly, feebly convex, even, just visibly flattened before the scutellum, narrowly explanate along the sides. Scutellum trian- gular, polished, impunctate. Elytra ample, quadrate, at base as wide as the prothorax, three-fourths longer ; sides nearly straight, feebly divergent from base to apex ; disk with sparse, evenly distributed and very distinct punc- tures. Abdomen fully as wide as the elytra but scarcely as long, sparsely and extremely feebly punctnlate, the border wide, feebly delimited and more densely punctate. Legs moderate. Length 2.2-3.3 mm. ; width 0.85-1.3 mm. California (Lake Tahoe). The male characters, other than palpal, are very feeble, the gene- ral form of the body and length and structure of the antenna? being nearly identical in the two sexes; the fourth palpal joint is very strongly securiform, and the intermediate tibia? are broadlv and just visibly sinuate within. The tibiae are very feebly and sparsely spinulose. Ten specimens. P. pallidum n. sp. — Somewhat broad, feebly convex, shining though feebly alutaceous, flavate ; abdomen black ; elytra feebly clouded with piceous especially toward apex; head testaceous; antennae blackish in apical half; pubescence short but abundant throughout. Head coarsely reticulate but with only a few very fine and remote punctures, flattened above ; vertex feebly, obliquely bistriate ; eyes well developed ; antennae very feebly incras- sate, cylindrical, rather more than one-half as long as the body, all the joints longer than wide, eleventh cylindrical in basal, and conical in apical, half. Prothorax transverse, almost two-thirds wider than long ; sides rather strongly, nearly evenly arcuate ; basal angles obtuse and rounded ; apex truncate, three-fourihs as wide as the base ; disk feebly convex, narrowly explanate at the sides, much more obliquely and broadly so toward base, almost perfectly even, finely, densely punctate and rather coarsely reticulate, shining. Elytra ample, scarcely as long as wide, at base subequal in width to the prothorax, two-thirds ( ^ ) to three-fourths ( 9 ) longer than the latter ; sides nearly straight, feebly divergent from base to apex ; disk flat, abruptly convex and declivous at the sides, finely, very densely punctate but shining. Abdomen shining, very feebly punctulate ; border wide, the dividing line very fine. L«'gs moderate ; femora broad ; tibiae slender, finely and extremely sparsely spinulose. Length 2.3-2.6 mm. ; width 0.8-1.0 mm. California (Lake Tahoe) ; Nevada (Reno). Easily distinguishable from the others of Fauvel's " Section B," by the pale coloration. The sexual differences in general form are 416 Coleopterological Notices, V. very slight, but as usual the head is a little larger and the protho- rax a trifle less transverse in the male than in the female ; in the former sex the fourth palpal joint is strongly and normally securi- form, and the intermediate tibiae broadly and distinctly sinuate within just beyond the middle. Fifteen specimens, almost uniform in size and coloration. LATHRIWiEUM Ericlis. The species of Lathrimieum are rather abundant in the western parts of North America, but only one has been thus far recorded from the Atlantic regions. The seven representatives in my cabinet may be veiy readily distinguished as follows : — Pronotum distinctly impressed along the median line except toward base. Elytra flavate, each strongly, obliquely bimaculate with piceous-black, not modified at apex in the female ; size larger. Prothorax shorter and broader, more strongly arcuate at the sides ; strial intervals of the elytra convex subcostatuill Prothorax smaller, feebly rounded on the sides ; elytra smoother, the strial intervals not distinctly convex.; pictllin Elytra nearly uniform in coloration. Larger species, never much less than 3 mm. in length, with the oblique discal impressions near the base of the pronotum nearly obsolete ; apices of the elytra obliquely produced in tlie female. Narrower, castaneous ; prothorax three-fourths wider than long, feebly rounded at the sides ; elytra much longer than wide. flnietarium Broad, piceous-black ; prothorax twice as wide as long, strongly rounded at the sides ; elytra but slightly longer tban wide, tlie apices less produced in the female nigl'Opiceillll Small species, never much more than 2 mm. in length, tlie two approxi- mate oblique impressions near the base of the pronotum very deep and distinct, coalescent. Prothorax very transverse, strongly and extremely widely reflexed at the sides ; antennae more slender, one-half as long as the body ; color pale brownish-flavate reflexicolle Prothorax narrower, less broadly retiexed at the sides ; antennse shorter, more incrassate toward tip; color piceous-black spretlllll Pronotum not impressed along the median line ; surface even ; elytra short, not more than twice as long as the prothorax SOI'didllllt Of sordidum I have before me a single mutilated specimen from Fredericksburg, Yirginia; it is remarkably distinct; the oblique impressions of the pronotum are obsolete in this example, and the Coleopterological Notices, V. 417 scutellum has a few coarse punctures. The species previous!}^ de- scribed by me as humerale (Bull. Cal. Acad. Sci., II. p. 243) is the same as subcostatum. I.. lli$;ropiceiIIIl ii. sp. — Oblong, broad, rather convex, polished, gla- brous and dark blackish-ijiceous throughout, the lateral edges of the pronotum and elytra slightly paler from diaphaneity ; legs but slightly paler ; antennae black, with one or two basal joints paler. Head short, transverse, scarcely more than one-half as wide as the prothorax, broadly, feebly, longitudinally biimpressed, the ocelli at the feeble niichal constriction separated by two-fifths of the entire width ; eyes well developed ; antennae as long as the head and prothorax, gradually rather strongly incrassate, outer joints wider than long. Prothorax very short, fully twice as wide as long, the sides strongly, evenly arcuate ; base transverse, wider than the apex ; disk coarsely, strongly, rather densely and unevenly punctate, very broadly explanate at the sides and with the usual sublateral impression just before the middle ; oblique snbbasal impressions feeble but distinct. Elytra very slightly longer than wide, a little wider than the prothorax and more than three times as long ; sides parallel and broadly, feebly arcuate. Abdomen entirely covered by the elytra. Leffs rather short, moderately slender. Length 2.7-3.3 mm. ; width 1.5-1.8 mm. California (Sta. Cruz Co.). The three specimens in my cabinet are females, and may be dis- tinguished at once from the corresponding sex of Jim e tar ntm by the dark color, shorter, broader form, and by the sculpture of the elytra which, though similar in general to that of fime.tarivmi, is more closely and unevenly punctate, the difference in size between the minute punctures of the intervals and the coarser sculpture of the series being much more marked than in that species. 1a, reflexicolle u. sp. — Oblong, convex, very broad, polished, pale brownish-tlavate, the head and elytra feebly picescent, the latter paler at the humeri and along the lateral margins. Head wider than long, rather large, fully three-fifths as wide as the prothorax, strongly, rugosely punctate toward base but finely and sparsely so anteriorly ; ocelli distant by two-fifths the width ; eyes well developed ; nuchal constriction subobsolete ; antennae slen- der, feebly incrassate, the sixth joint nearly twice as long as wide, eighth distinctly longer than wide, tenth scarcely wider than long. Prothorax rather more than twice as wide as long, the sides broadly, somewhat unevenly arcu- ate ; base a little wider than the apex ; disk coarsely densely and rugosely punctate, more sparsely and evenly so near the sides, broadly, strongly re- Hexed laterally, with a punctiform fovea in the middle rather distant from the lateral margin ; median snbbasal impressions eoalescent, forming a transversely arcuate cliannel. Elytra two and one-half times as long as the prothorax, and, toward apex, fully one-third wider ; sides distinctly divergent from the feebly 418 Coleopterological Notices, V. oblique and unexposed humeri and nearly straight ; outer angles broadly- rounded ; apex truncate ; disk coarsely, not very densely and deeply punc- tate, the punctures forming uneven series with feebly convex punctate inter- vals. Abdomen very short and rapidly pointed behind the elytra, pale, shining and subimpunctate. Length 2.0 mm. ; width 1.2 mm. British Columbia (Stickeen River Caiion). Mr. H. F. Wickham. Tlie single specimen from which the description is taken is a male, and may possibly be immature. It is distinguishable at once by its small size and very broadly concave and reflexed side margins of the prothorax. L,. spretum n. sp. — Short, broad, polished, convex, piceous-black, the side margins slightly paler from diaphaneity ; legs paler ; antennae black, paler at base. Head two-thirds as wide as the prothorax, wider than long, strongly, densely punctate toward base, the clypeus subimpunctate ; ocelli separated by one-third of the total width, the nuchal constriction almost obsolete; surface impressed near each ocellus and also obliquely at the sides of the clypeus ; antennae but slightly longer than the head and prothorax, slender, rather rapidly strongly incrassate near the tip, sixth joint one-half longer than wide, the tenth transverse. Prothorax scarcely twice as wide as long, the sides rather strongly rounded, convergent and nearly straiglit toward base, widest before the middle ; basal angles obtuse but not rounded ; base not distinctly wider than the apex ; disk strongly and closely but scarcely rugosely punctate, explanate at the sides, the sublateral fovea before the middle and near the edge ; median subbasal impressions strong, coales- ceut, forming a posteriorly angulate transverse channel. Elytra quadrate, almost three times as long as the prothorax and nearly two-fifths wider ; sides subparallel, nearly straight ; humeri distinctly exposed at base ; apex trun- cate, the sutural angles not at all produced ; disk strongly punctate, the punctures forming dense close and rather well-marked series with the inter- vals feebly convex and finely remotely and subserially punctate. Abdomen extremely short and broadly obtuse behind the elytra, black, subimpunctate. Length 2.2 mm. ; width 1.2 mm. California (Siskiyou Co.). The unique type is a female but cannot be confounded with re- fiexicolle, as the numerous differences are not at all suggested in the large series of males and females of subcoslatum. which I have before me. The present species differs from reJiexivoUe in the very much more narrowly explanate sides of the pronotum, in the less coarse and closer sculpture of the elytra, straight and not arcu- ate sides of the prothorax toward base, in the shorter antennae, and in the distinctly exposed humeri ; in color, rugosity of the pronotum and several other features there is also notable divergence. Coleoplerological Notices, V. 419 DELIPHRUM Erichs. The two following species are referred to Deliphrum, although in some characters they appear to be intermediate between that genus and Lathrimteura. In sequicolle the intermediate tibiae only are sparsely spinulose, the others coarsely setose, or with spines only very slightly thicker than the ordinary seta3 ; in occiduum the spinules of the hind tibiae are but slightly more visible. A few very short spines are also visible along the intermediate tibiae of Lathri- mseum spretum. In the general facies and fine even punctures of the pronotum both of these species agree very satisfactorily with Deliphrum tectum Payk. ; they are very much smaller than D. ex- p)ansum Lee. from Colorado. The antennal differences given by LeConte and Horn (Class. Col. N. A.) to distinguish Lathrimseum and Deliphrum do not exist, these organs being equally incrassate in both ; they are however longer and much more nearly filiform in Olophrum. In Lath, sub- costatum the tibiae are not spinose, but evenly covered with short stiff inclined setae. D. sequicolle n. sp. — Broad, polished, glabrous, dark piceous-browii, the head and abdomen blackish ; antennae black, slightly pale at base ; legs, sterna and epipleurse paler, flavescent. Head transverse, three-fifths as wide as the prothorax, very finely, remotely pnnctate, smooth ; ocelli large, promi- nent, distant by two-fifths the width ; dorsal constriction of the neck obso- lete ; surface feebly impressed before each ocellus and at the sides of the clypeus ; lateral margins of the latter deeply interrupted as usual before the eyes for the reflexion of the antennae ; eyes moderate ; antennae two-fifths as long as the body, slender toward base but rapidly though gradually, strongly incrassate near the apex, sixth joint one-third longer than wide, eighth and tenth similar in form, slightly wider than long, the tenth very much the larger. Prothorax not quite twice as wide as long, the sides parallel, evenly, moderately rounded ; basal angles obtuse and blunt ; disk minutely, not very densely, evenly punctate, the punctures rather closer and stronger near the base, the surface narrowly explanate along the sides, not at all impressed in the middle, the sublateral fovese before the middle very feeble. Elytra sub- quadrate, nearly parallel, truncate at apex, not as long as wide, not more than twice as long as the prothorax ; sides nearly straight ; humeri not exposed at base ; disk coarsely deeply confusedly and not very densely punctate, the punctures having only the most indistinct lineate arrangement, altogether confused and denser near the suture. Abdomen with more than three exposed segments, subimpunctate, polished. Length 2.0 mm. ; width 1.1 mm. 420 Coleopterological Notices, V. California (Lake Tahoe). I took a single male only of this species, which is very distinct by reason of its short and coarsely, subserially sculptured elytra. D. OCCidlllim n. sp. — Oblong, convex, polislied, glabrous, black, the elytra with the feeblest piceo-metallic tinge ; legs piceous-black, the tibije and tarsi rufescent ; antennse black throughout. Head two-thirds as wide as the prothorax, nearly as in cequicoUe, minutely, sparsely punctate ; antennse slender, slightly longer than the head and prothorax, very evenly, feebly incrassate throughout from near the base, joints one to seven more or less longer than wide, eight to ten shorter, similar in form, scarcely as long as wide, increasing in size. Prothorax about twice as wide as long, the sides parallel, feebly and evenly arcuate ; base and apex subequal ; basal angles obtuse and narrowly rounded ; disk evenly, transversely convex, not im- pressed, very narrowly explanate along the side margins, finely, rather strongly and somewhat closely punctate ; sublateral fove?e before the middle very feeble. Elytra toward apex nearly one-third wider than the prothorax, two and one-half times as long as the latter, fully as long as wide, truncate at apex, the sides feebly divergent, nearly straight ; humeri not exposed at base, obliquely rounded to the prothorax, rather coarsely strongly and closely punctured, with a broad deep impression along each side of the elevated suture, the punctures almost evenly distributed, with very feeble subserial arrangement. Abdomen with nearly three exposed segments, polislied, sub- impunctate. Length 2.2 mm. ; width 1.2 mm. California (Siskiyou Co.). Allied to sequicoUe but differing altogether in the form of the antennae, which are here much more slender and very feebly gradu- ally and evenly incrassate throughout, also in its rather more trans- verse prothorax and in the larger, more densely punctate elytra. It is represented in my cabinet by a single female. OMALUJm Grav. In this difficult genus the European species have been divided into several subgenera which appear to be amply valid, at least as such, there being notable differences in the structure of the maxil- lary palpi. The following species are to be added to those already known from North America: — O. ater n. sp. — Narrow, convex, highly polished, intense black, the legs toward tip and antennse toward base rufescent ; very narrow side margins of the pronotum also feebly rufescent from diaphaneity ; pubescence excessively short, remote and scarcely visible. Head barely more than two-thirds as wide as the prothorax, wider than long, flat throughout above, finely, very remotely Coleopterological Notices, V. 421 and unevenly punctate ; front broadly, strongly rounded ; eyes large, at the base ; tempora nearly obsolete ; nuchal constriction immediately behind the ejes, extending transversely across the head ; ocelli large, separated by two- fifths the total width, on the edge of the nuchal depression ; third joint of the maxillary palpi small, not longer than wide, fourth fusiform, pointed toward apex, in the middle wider than the third, about three times as long ; antennae stout, not quite as long as the head and prothorax, basal joint cylindrical, twice as long as wide and as long as the next two, the latter equal in length, third narrow, obconical, nearly twice as long as wide, six to eleven gradually strongly incrassate and more densely pubescent, forming a six-jointed club, seven to ten strongly transverse ; minute impressions before the ocelli scarcely distinct. Prothorax nearly one-half wider than long ; sides parallel and broadly, evenly arcuate ; base truncate, scarcely wider than the feebly arcuate apex ; disk transversely convex, nearly even but with two obsoletely flattened median areas ; punctures fine, deep, very sparse and rather unevenly distributed. Elytra but very slightly wider than the prothorax and twice as long, about as long as wide ; sides straight, scarcely divergent ; punctures somewhat coarse, deep, not very dense, forming indistinct longitudinal rugulations. Abdomen shining, minutely, sparsely punctate, as long and wide as the elytra ; border moderate. Legs short and rather stout ; tibiae strongly spinulose externally and with an internal row of slender bristles which are very short on the anterior ; hind tarsi nearly four-fifths as long as the tibiae, the last joint barely as long as the four preceding together, the fourth distinctly shorter than tVie third ; anterior feebly dilated in the male. Length 2.9 mm. ; width 1.0 mm. California (Sta. Cruz Co.). Related to Jior ale (= rufipes Fourc.) but much smaller, with the elytral punctures much coarser and not joined by anastomosing im- pressed lines as they are in that species. O. paciflcum n. sp. — Narrow, moderately convex, feebly narrowed ante- riorly, intense black throughout; legs and base of the antennae rufescent ; pubes- cence in the form of minute but distinct erect stiff setae. Head three-fourths as wide as the prothorax, in form as well as structure of the palpi and antennae nearly as in ater, the basal joint of the latter however not as long as the next two and the second longer as well as thicker than the third, outer joints strongly incrassate and transverse. Prothorax three-fifths wider than long ; sides nearly parallel, broadly, evenly arcuate ; base transversely truncate, very slightly wider than the apex ; disk evenly, transversely convex, with scarcely any trace whatever of central flattening, finely strongly and densely punctate. Elytra toward apex slightly wider than the prothorax, nearly two and one-half times as long as the latter ; sides straight, just visibly divergent ; disk finely, deeply, extremely densely punctate, the sculpture feebly rugulose, longitudinally substriate near the middle. Abdomen fully as wide as the elytra and rather shorter. Legs short and stout, the tibite spinulose externally. Length 2.3 mm. ; width 0.75 mm. 422 Coleopterological Notices, V. California (Siskiyou Co.). This species is allied to ater and megarthroides, differing greatly from the former in its still smaller size, narrower form, more dis- tinct setie and much finer, denser sculpture, and from the latter in coloration and in its more parallel and less anteriorly attenuate form. In pacificuin, ater and probably generally throughout the genus, there is a transverse row of longer erect setae near the middle of each abdominal segment and the minute erect setae of the elytral punctures are replaced at wide intervals by longer setae ; the small and ordinary elytral setae in ater are very much more minute than in pacificuin and can scarcely be discerned under com- paratively high power. The type appears to be a female. Oi megarthroides I have many examples of all degrees of color and immaturity. The measurements given by Fauvel seem to be a little too great, my series of thirty-one specimens, taken in nume- rous localities from Los Angeles to Yictoria, give as extremes of length 1.75-2.6 mm. ; megarthroides appears to be extremely closely allied to humile Makl. O. lacustre n. sp. — Narrow, elongate, subparallel, feebly convex, pol- ished, rufo-testaceous throughout, the head and abdomen, especially toward apex, rather darker and more plceous ; pubescence consisting of extremely minute suberect scarcely visible setse, denser and much longer on the aluta- ceous under surface of the abdomen. Head distinctly but not greatly nar- rower than the prothorax, wider than long, triangular, with the epistoma truncate and one-half as wide as the base ; eyes moderate, at one-half their length from the base ; the tempera parallel, nearly sti-aight and almost as prominent a^the eye; base truncate, the constriction extending transversely and deeply across the dorsal surface ; ocelli separated by two-fifths the entire width, on the edge of the constriction ; occiput not impressed before them ; surface finely, rather closely but unevenly punctate, very feebly biimpressed between the antennje, the latter pale, yery short, one-third longer than the width of the head, subcylindrical, scarcely visibly incrassate, outer joints transverse ; last joint of the maxillary palpi subbulbose toward base, gradu- ally finely attenuate and feebly arcuate thence to the apex, nearly three times as long as the third but scarcely as thick. Prothorax one-half wider than long, widest before the middle ; sides broadly rounded, becoming rather more convergent and straighter toward base; disk finely, rather closely punctate, without anastomosing impressed lines, with two elongate subobsolete median impressions and another scarcely visible between them near the apex. Elytra but just visibly wider than the prothorax, quadrate, as long as the head and prothorax, scarcely as long as wide, finely, very densely punctate and obsoletely, longitudinally substriolate. Abdomen a little narrower and rather longer than the elyti-a, subparallel ; border rather wide. Legs short ; poste- ColeopterologicaV Notices, V. 42 rior tarsi slender, very nearly as long as the tibife ; fourth joint shorter than tlie third, first three somewhat elongate, first four together much longer than the fifth. Length 2.75 mm. ; width 0.75 mm. Michigan. The single specimen is a male and has the anterior tarsi very feebly dilated ; the sixth ventral is broadly, feebly arcuate at apex. This species closely resembles longidum, but differs in its much shorter and more densely punctate elytra, smaller and less incras- sate antennae, in the absence of anastomosing fine lines on the shorter pronotum, and, radically, in the structure of the posterior tarsi, which in longulum have the first four joints short, thick, oblique, equal and together rather shorter than the fifth. O. capito n. sp. — Elongate, parallel, feebly convex, polished, black ; antenna}, legs and elytra paler, castaneous ; pronotum piceous-black ; setae extremely minute, sparse and scarcely discoverable, on the abdomen longer and distinct but sparse above and beneath, the venter shining. Head large, not as long as wide, much longer and only slightly narrower than the protho- rax, finely, sparsely punctate, scarcely percej^tibly biiuipressed between the antennse ; eyes feebly convex; tempora subparallel, straight, nearly as long and prominent as the eye ; base transverse and strongly constricted, the ocelli on the edge of the constriction, very feeble, separated by barely one-third of the width ; antennae stout, feebly incrassate, as long as the head and protlio- rax, third joint rather longer than wide, constricted and strongly compressed toward base. Prothorax two-thirds wider than long, widest before the middle ; sides feebly convergent and just perceptibly sinuate toward base ; disk scarcely visibly flattened in the position of the usual impressions, evenly convex, finely, sparsely punctate. Elijtra about as long as wide, a little longer than the head and prothorax, very slightly wider than the latter, strongly, broadly impressed along the elevated suture, finely, very sparsely punctate, the punctures feebly lineate in arrangement toward the middle of each. Abdomen a little narrower and rather shorter than the elytra, minutely sparsely and indistinctly punc- tate, shining, just visibly alutaceous. Legs short; posterior tarsi very long and slender, as long as the tibiae, the first three joints elongate, oblique at apex, second nearly twice as long as the first, two to four decreasing rapidly in length, first four together much longer than the fifth. Length 3.0 mm. ; width 0.9 mm. Wisconsin. Allied to lacvsfre, having nearly the same peculiar structure of the tarsi and also similar in the form of the body and oral organs. It differs notably in the larger head, longer, stouter antennas with compressed third joint, more approximate ocelli, longer tempora, longer elytra and much sparser punctuation throughout. The single specimen is a male, having the sixth ventral feebly arcuate 424 Goleopterological Notices, V. at apex and the anterior tarsi feebly dilated and denselj^ pubescent beneath. If the usual definition of the genus is to hold, these two species will have to be separated because of the marked tarsal dif- ferences. The following species have the body slender, parallel, subimpunc- tate and opaque or alutaceous, with the fourth joint of the maxil- lary palpi slender, cylindrical, much narrower than the third and somewhat more or less than twice as long; they constitute the subgenus Phloeonomus of Heer: — Fourth palpal joint shorter, one-half longer than the third. Arctic. lapponiciiiu Fourth palpal joint twice as long as the third or very slightly longer. Posterior tarsi distinctly more than one-half as long as the tibiae. Surface opaque, strongly granulato-reticulate ; prothorax very nearly as wide as the elytra. European subarctic pusillum Surface much more shining, alutaceous, more coarsely and feebly reticu- late ; prothorax much narrower than the elytra ; setsB of tl)e latter longer and more visible. American subarctic laBSicolle Posterior tarsi not more than one-half as long as the tibiae ; legs longer ; body much broader, feebly shining, alutaceous. American subarctic. suffusiim Pusillum is simply included for comparison ; it is closely allied to Isesicolle but is distinct and does not appear to inhabit North America. O. Slllfusuni n. sp. — Suboblong, depressed, feebly shining, black, the legs and elytra rufous, the latter suflfnsed with black near the scutellum and each external apical angle ; antennae fuscous, pale in basal half; integuments subglabrous ; elytral setae minute, erect, distinct under a power of 80. Uead small, wider than long, three-fourths as wide as the prothorax; eyes large, convex ; tempora feebly arcuate, short, strongly convergent to the nuchal constriction ; ocelli distinct, on the edge of tlie constriction, separated by scarcely more than one-fourth of the total width ; surface impressed before each, also broadly, strongly impressed at each side of the large rounded clypeus ; antennae a little longer than the head and prothorax, outer six joints abruptly stouter, six to ten strongly transverse. Prothorax four-fifths wider than long ; sides subparallel, feebly arcuate, slightly convergent and scarcely sinuate toward base ; disk subimpunctate, explaiiate at the sides, more broadly toward base, also with two broad strong median impressions extending but slightly beyond the middle and a very feeble median impression at the apex. Elytra quadrate, one-fourlh wider tlian the prothorax and twice as long, nearly as long as wide, much longer than the head and prothorax ; humeri extremely narrowly exposed ; sides parallel ; disk very sparsely and obsoletely punc- tate. Abdomen as wide as the elytra and rather shorter, somewhat strongly Coleopterological Notices, V. 425 shining, feebly pubescent ; border moderate. Legs slender, rather short ; four basal joints of the hind tarsi together barely three-fourths as long as the last. Length 2 0 mm. ; width 0.7 mm. Alaska (Hunter's Bay, Prince of Wales Island). Mr. Wickham. Much broader and rather more convex than IsesicoUe, to which it is allied. In Isesicolle the fifth abdominal tergite is nearly two and one-half times as wide as long, while in the present it is scarcely more than twice. O. qiiadripeiine n. sp. — Oblong, feebly convex, black with a feeble piceous tinge except on the abdomen ; legs rufous ; antennje fuscous, paler toward base ; integuments polished, subglabrous, the abdomen finely, strongly reticulate and alutaceous. Head strongly, closely punctate, wider than long, fully two-thirds as wide as the prothorax ; neck narrow, one-half the total width ; eyes moderate, near tlie base ; ocelli separated by scarcely more than one-fourth the total width ; surface with a deep puncture before and exterior to each ocellus, also broadly impressed at each side of the large and broadly rounded clypeus ; antennje as long as the head and prothorax, gradually and moderately incrassate ; fourth palpal joint as wide as the third and about three times as long, very feebly narrowed, the tip obtuse. Prothorax strongly transverse, four-filths wider than long ; sides broadly, evenly rounded, feebly convergent and nearly straight toward base, the basal angles obtuse ; disk transversely convex, feebly explanate near the hind angles, with three dis- tinct median impressions, the intermediate near the apex. Elytra parallel, quadrate, slightly wider than the prothorax and barely twice as long, very little longer than the head and prothorax, not quite as long as wide, strongly, very densely' pimctate and obsoletely, longitudinally rugulose. Abdomen as- wide as the elytra and a little shorter ; segments very short ; border ample. Legs short, slender ; four basal joints of the hind tarsi together scarcely more- than two-thirds as long as the fifth. Length 1.8 mm. ; width 0.7 mm. Virginia (Fredericksburg). Allied rather closely to forominosum, but abundantly distinct ini its broader form, larger protborax, shorter elytra, much denser punctuation, shorter, broader abdominal segments and many other- characters; from cribr-um it may be known at once by the rounded sides of the prothorax. In this and many other species there is a deep wide and oblique antennal groove on the upper surface of the head near the eye, the inner margin of which is frequently cariniform. It seemed at first as though this might serve to define the genus Omalium better than the variable posterior tarsi, but I find that it disappears in some species such as lapponicuvi and laesicoUe, and moreover exists iu. some other genera such as Lathrimaeum. Amnals N. Y. Acad. Sci., VII, Nov. 1893.— 28 426 Coleopterological Notices, V. 0. rtigipenne Csy. is a very aberrant form in its small short ely. tra and large rounded abdomen, but belongs to the genus by all of its structural characters. 0. algarnm Csy. (^^fucicola \\ Csy.) is closely allied to theveneti Fvl., but differs in its much larger size and relatively shorter antennae. Of exsculptum Makl. I took a single specimen in Humboldt Co. California; the sculpture of the pronotum reminds us somewhat of Lathrimaeum, but it is a true Omalium. ANTHOBIUM Steph. The species of Anthobium are really very numerous in America, especially in the regions near the Pacific Ocean, but had not been collected to any extent at the time Mr. Fauvel wrote upon them (Not. Ent., 7, 1818). During a four or five days collecting trip to Lake Tahoe in June 1886, I took four species in an area notexceed- iing several hundred yards in extent bordering this pretty little ■mountain sea. Omalini of several genera are especially abundant -in those regions, which will yield many more interesting forms -when the numerous secluded valleys can be carefully explored. At the present time I have selected a number of the more distinct and interesting new species for description ; these may be identified among themselves as follows : — Elytra with tiie outer angle at apex moderately broadly rounded, the apex subtruncate. Head black. Entire upper surface intense black nigerrimilin Upper surface black, the pronotum and elytra dark piceous ; sutural angles not prolonged in the female ; prothorax in the male much larger than in the female....' divei'SiCOlle Black, the pronotum slightly paler especially toward base ; elytra pale fiavate gilvipeiine iHead testaceous. Pronotum with a feeble subobsolete median impressed line, at least in the male. Elytra transversely truncate or evenly arcuate at apex, in the female not in the least modified at the sutural angle ; pronotum polished, very coarsely, deeply punctate piinctatum ■Elytra with the sutural angles abruptly and strongly produced in the female ; prothorax in the male much more elongate than in the female tibiale Pronotum without vestige of an impressed median line. Sides of the prothorax broadly subangulate at basal third ; large stout species, strongly punctate SUlianglllatuill Coleopterological Notices, V. 427 Sides of the prothoi-ax very evenly rounded ; small species. atriventre Elytra with the outer angle very broadly rounded, the apex conjointly semi- circular in the male or gradually acutely pointed in the female ; prothorax relatively smaller fraterniim As several species, such as fi^nelariiim, segmentarmm and mar- ginatum are unknown to me, and rugulosum doubtfully determined, I am not able at present to give a complete statement of our species ; sorbi is somewhat doubtful as an American species. A. nigerrimilin. — Elongate, parallel, polished, the pronotum and abdomen reticulate and alutaceous, the abdomen finely, sparsely pubescent ; legs and antennae pale rufo-testaceous, the latter iufumate near the tip. Head transverse, two-thirds as wide as the prothorax, very finely, sparsely punctate, feebly and longitudinally impressed near the sides ; eyes large and prominent ; ocelli small, separated by less than one-third the width ; antennae short, scarcely as long as the head and prothorax, outer joints gradually rather strongly incrassate, sixth longer than wide, seven to ten similar in form and a little wider than long. Prothorax three-fourths wider than long, the sides evenly and continuously arcuate, feebly divergent to beyond the middle, then very broadly rounded and strongly convergent to the apex which is scarcely three-fourths as wide as the base ; disk evenly, transversely cenvex, very feebly subexplanate at the sides just behind the middle, without trace of median impressed line, the punctures fine but strong and distinct, rather sparse. Elytra a little longer than wide, more than twice as long as the prothorax and scarcely visibly wider, the sides straight and subparallel ; apex broadly feebly and very evenly arcuate ; disk unusually coarsely deeply confusedly and rather closely punctate. Abdomen as wide as the elytra, with four exposed segments. Length 2.2 mm. ; width 0.9 mm. Southern California. Mr. H. C. Fall. The single male in my cabinet is related to californicum but differs in its intensely black and more coarsely sculptured elytra. The anterior tibise are simple and the median elevated plate of the sixth ventral segment is very large, transverse, twice as wide as long, extending to the apex and with its apex transversely truncate and its sides parallel. The nuchal constriction throughout Anthobium is completely obsolete on the dorsal surface, and by this character the species can be distinguished from all the forms of Omalium which I have seen, although the constriction becomes very feeble in several species of the latter genus, such as hamatum and megarthroides, these also approaching Anthobium in general habitus as well. 428 Coleopterological Notices, V. A. diversicolle. — Subparallel, convex, subalutaceous, the elytra pol- ished, black, the proiiotum and elytra piceous-black ; legs and anteunse pale flavate, the latttr toward apex and the posterior femora toward base dusky. Head two-thirds as wide as the prothorax, broadly, longitudinally biimpressed, minutely, sparsely punctate ; ocelli small, separated by more than one-third of the width ; eyes rather small ; antennae much shorter than the head and prothorax, strongly incrassate toward apex. ProtJiorax large, rectangular, one-third wider than the length ; sides parallel, broadly, feebly and evenly arcuate ; apex broadly, very feebly arcuate, but slightly narrower than the base ; disk strongly convex, even, impressed at the sides behind the middle, very minutely feebly and rather sparsely punctate. Elytra about as long as veide, just visibly wider than the prothorax and distinctly less than twice as long ; humeri not exposed ; sides straight and subparallel ; apex broadly, evenly, feebly arcuate ; disk not very coarsely but strongly, rather sparsely, confusedly and subrugosely punctate. Abdomen with more than three exposed segments. Length 1.7-2.3 mm. ; width 0.8-0.95 mm. California (Lake Tahoe) ; Nevada (Reno); Utah (southern). A verv abundant species, remarkable because of the great sexual disparity in the form of the prothorax. The description is drawn from the male which has the sixth ventral strongly, transversely convex but scarcely visibly elevated or thicker in the middle, and the anterior tibiae prominent within at the middle and thence nearly parallel to the apex and gradually strongly narrowed to the base. The female has the prothorax nearly twice as wide as long and more shining, the elytra broadly arcuate at apex and transversely impressed before the tip of each, the sutural angles not visibly modified. In califormcum, of which I have a large series from Lake Co., corresponding protboracic differences are observable but not so marked. The present species is allied to lihiale, but difi'ers in its smaller size, in coloration and in its much sparser punctuation. A. gilTipenne. — Narrow, parallel, convex, black, the pronotnm piceous, sometimes decidedly paler at base; elytra and legs flavate; antennae pale, dusky in outer half; surface strongly shining, the pronotum not distinctly alutaceous. Head transverse, large, five-sixths as wide as the prothorax, rather strongly, longitudinally biimpressed, minutely, sparsely punctate ; eyes large and prominent ; ocelli separated by more than one-fourth of the width ; antennae rather feebly incrassate in apical half, about as long as the head and prothorax, the sixth joint quadrate, seventh similar but a little larger, eighth slightly wider than long, the tenth distinctly transverse. Prothorax trans- versely rectangular, two-fifths wider than long ; sides parallel, nearly straight, convergent and rounded in apical third ; base slightly wider than the apex ; basal angles slightly blunt ; disk transversely, strongly convex, with feeble traces of an impressed median line, feebly impressed laterally behind the Coleopterological Notices, V. 429 middle and obsoletely in the middle before the base; punctures fine, feeble and sparse. Elytra one-fourth longer than wide, the sides subparallel and nearly straight ; apex transverse ; humeri not exposed ; disk scarcely visibly wider than the pronotum but nearly two and one-half times as long, coarsely strongly confusedly and not very densely punctate. Abdomen with nearly four exposed segments, shining, subimpunctate and not distinctly pubescent. Length 1.7-1.9 mm. ; width 0.7-0.8 mm. California (Sta. Cruz Co.). The two specimens are males, having the median elevated plate of the terminal ventral segment large, trapezoidal in form, twice as wide as long with the apex transversely truncate ; anterior tibiae simple. In the female the pronotum will probably prove to be distinctly shorter, as in californicum, tibiale and diversicolle. A. piinctatum. — Rather broad and cuneiform, pale rufo-testaceous, the elytra more flavate, the abdomen sometimes feebly clouded with darker ; integuments glabrous and very highly polished, the pronotum without trace of reticulation or alutaceous lustre. Head four-fifths as wide as the protho- rax, the eyes very prominent ; surface obsoletely, longitudinally biimpressed, rather coarsely sparsely and unevenly punctate ; ocelli large and separated by fully one-third of the width ; antennae as long as the head and prothorax, outer six joints gradually thicker, tenth one-third wider than long and twice as wide as the third. Prothorax three-fourths wider than long; sides sub- parallel, feebly arcuate, a little more convergent anteriorly ; base distinctly wider than the apex ; disk highly polished, very coarsely deeply and some- what closely punctate, feebly impressed near the sides behind the middle and obsoletely and unevenly along the median line. Elytra about as long as wide, at the obliquely rounded and scarcely exposed humeri barely wider than the prothorax but one-half wider near the apex, two and one-half times as long ; sides divergent and nearly straight ; apex broadly, evenly rounded through- out the width ; disk broadly impressed along the suture; punctures coarse, deep, confused and rather close. Abdomen with three or four exposed segments, shining, flat, scarcely perceptibly and remotely punctulate. Length 2.0-2.5 mm.; width 1.1-1.2 mm. California (Sta. Cruz Co.). This Rpecies is allied in general form and more distant ocelli to pothos, but differs much in its more convex and polished, less trans- verse and very coarsely punctate pronotum. It is represented by four females. A. ti1>iale« — Subparallel, rather convex, shining, subglabrous, pale rufo- testaceous, the antennae dusky toward tip ; elytra more flavate, the abdomen piceous-black ; head and pronotum alutaceous. Head three-fourths as wide as the prothorax ; eyes moderately prominent; ocelli distant by one-third the width ; surface perfectly flat and unimpressed, minutely, rather closely punc- 430 Goleopterological Notices, V. tate ; antennae much shorter than the head and prothorax, moderately in- crassate. Prothorax large, subrectangalar, one-third wider than long ; sides subparallel, very feebly arcuate, a little more convergent anteriorly ; base distinctly wider than the apex ; basal angles slightly obtuse and blunt ; disk strongly, evenly convex, minutely but strongly, evenly, rather sparsely punctate, very feebly impressed near the sides behind the middle and also extremely obsoletely and narrowly along the median line. EUjtra rather longer than wide, twice as long as the prothorax, and, near the apex, almost one-third wider ; sides feebly divergent, nearly straight ; humeri not exposed ; apex broadly, evenly arcuate throughout the width ; disk rather finely but strongly, confusedly and closely punctate. Abdomen with about four exposed segments. Length 1.8-2.1 mm.; width 1.0-1.1 mm. Arizona. The description is taken from the male, in which sex the sixth ventral is abruptly thickened and transversely more convex in the middle, with the very short apex of the segment beyond thinned and transparent, and the apical margin of the thickened part bearing long stiff setas ; the anterior tibiae are widest and obtusely prominent within at the middle, thence rapidly narrowed to the base and broadly sinuate to the apex. The female is quite different, the prothorax being very much shorter and more transverse as in diversicolle, and the elytra larger, fully three times as long as the prothorax, covering the entire abdomen, with the sutural angles very strongly and abruptly prolonged behind. Six specimens. A. Sllliailglllatllin. — Robust, subparallel, convex, rufo-testaceous and polished throughout, the abdomen black. Head large, four-fifths as wide as the prothorax, nearly as long as wide, scarcely at all impressed, finely but strongly, rather closely punctate; ocelli all but completely obsolete; eyes smaller than usual, the terapora distinct behind them ; antennae longer than usual, longer than the head and prothorax, sixth joint longer than wide, not wider than the preceding, seven to elevbn forming a long loose five-jointed club, tenth but slightly wider than long. Prothorax transverse, fully four- fifths wider than long; apex truncate, fully as wide as the base; sides very broadly subangulate just behind the middle, thence feebly convergent and nearly straight to the distinct but rounded apical angles, more convergent and somewhat sinuate to the base, the basal angles obtuse and blunt; disk rather coarsely deeply and closely punctate, just visibly impressed before the scutel- lum and strongly so along the sides behind the middle. Elytra about as long as wide, near the apex slightly wider than the prothorax, more than twice as long ; sides just visibly divergent, nearly straight ; humeri slightly exposed ; apex broadly, evenly subtruncate ; punctures distinct, deep, subequal to those of the pronotnm and rather less approximate, confused. Abdomen with about three exposed segments. Length 2.3-3.0 mm. ; width 1.0-1.25 mm. Coleopterological Notices, V. 431 California (Lake Tahoe). Described from the male, which has the sixth ventral broadly, feebly sinuate throughout at apex, with the surface not modified, the median segment of the seventh acutely parabolic, as long as wide, polished, with a few erect setae ; anterior tibite not modified, the tarsi distinctly dilated The female is almost perfectly similar in general structure to the male, but has the head a little smaller and the sides of the elytra a trifle more divergent. This is an interesting aberrant type of the genus, having longer antennae, and differing also in male sexual characters and in tarsal structure; the first four joints of the stout posterior tarsi are to- gether much longer than the last, with the second joint nearly twice as long as the first and as long as the next two together. The subobsolete ocelli makes the transition to the complete absence of them in Vellica, a comparatively easy one and also detracts somewhat from the importance of that character. A. atriTentre. — Subparallel, convex, sliiniiig, the pronotum but very feebly reticulate and alutaceous, pale rufo-testaceous, the abdomen black ; anteniiffi darker at apex. Head fully three-fourths as wide as the prothorax, tiat, minutely, sparsely punctate, very obsoletely biimpressed between tlie eyes and between the antennae ; ocelli large, diffuse, separated by fully one- third the width ; eyes large, prominent ; antennse scarcely as long as the head and prothorax, moderately incrassate, the last five joints gradually larger. Prothorax transverse, fully three-fourths wider than long ; sides broadly, evenly arcuate, much more convergent in apical half, the base truncate and nearly one-half wider than the apex ; basal angles obtuse but not appreciably blunt ; disk strongly, transversely convex, even, minutely but distinctly, sparsely punctate. Elytra distinctly longer than wide, more than twice as long as the prothorax, and, near the apex, one-third wider ; sides feebly divergent, nearly straight ; humeri slightly exposed at base ; apex broadly, feebly arcuate, with a small notch at the suture ; punctures strong confused and rather dense. Abdomen half exposed behind the elytra. Length 1.7 mm. ; width 0.75 mm. California (Los Angeles). This species is allied to gilvipenne, resembing it in general form, but differs in its shorter, more transverse prothorax, which is much more narrowed toward apex, in its larger, more distant ocelli, and in coloration and size. The single male has the sixth ventral thin and transparent, broadly lobed in the middle, the surface before the lobe abruptly elevated, flat, transverseh'^ trapezoidal, with the apex of the thickened part not quite attaining the apex of the segment 432 Coleopterological Notices, V. and broadly sinuate in the middle, not truncate as in gilvipenne ; anterior tibiae simple. A. f raterniim. — Broad, cuneiform, convex, pale rufo- testaceous through- out, alutaceous, the elytra polished. Head three-fourths as wide as the pro- thorax, the surface perfectly flat, minutely, sparsely punctulate ; eyes large ; ocelli large, separated by one-third the width, each immediately beliind a small deep impressed fovea ; antennje as long as the head and prothorax, gradually and rather strongly incrassate from the middle. Prothorax trans- verse, not quite twice as wide as long ; sides feebly rounded, slightly conver- gent in basal and strongly so in apical half; apical angles obtuse but visible; base two-fifths wider than the transversely truncate apex ; disk evenly con- vex, broadly, feebly impressed at the sides behind the middle, very widely so toward base ; punctures very minute but rather close. Eljtra large, longer than wide, transversely convex, one-half wider than the prothorax and nearly three times as long, semi-circularly rounded behind, covering all but the acute tip of the abdomen, finely but strongly, distinctly confusedly and not very densely punctate. Length 2.2-2.6 mm. ; width 1.1-1.25 mm. California (Hoopa Valley, Humboldt Co.). The male, from which the above outline is drawn, has the tibiae simple and straight, the posterior tarsi long, stout, with the second joint notably longer than the first and almost as long as the next two — nearly as in subanguJatum — the first four together much longer than the fifth, the fifth ventral broad, transverse at apex, with a deep abrupt parallel-sided median fissure nearly four times as deep as wide, the sixth short, broadly sinuate throughout, and the median ligula of the seventh large, longer than wide, convex and acutely triangular. The female is similar but larger, the elytra more oval, more than three times as long as the prothorax, covering the entire abdomen, slightly dehiscent at apex, and arcuately nar- rowed and conjointly acutely ogival from posterior third. This species with the eastern convexum and the Californian auTifiuum of Fauvel, constitutes a peculiar group of the genus, differing in the nature of the male sexual characters, in the larger oval and more convex elytra, and in tarsal structure. Aiirifiuum, of which I took a large series at Lake Tahoe, is a small species, 1.5-2.0 mm. in length, having the anterior and middle tibias flattened within and strongly arcuate throughout the length, the posterior tarsi shorter and more nearly normal, the fifth ventral unmodified and the sixth longer, narrower, trapezoidal, with the apex narrowly truncate. In the female the elytra pro- Coleopterological Notices, V. 433 ject far beyond the abdomen, are dehiscent in apical fourth, and obliquely narrowed from just behind the middle. In the male of convexum the fifth segment is transverse and unmodified, the sixth very short, transverse at apex, with a small feeble median sinuation, the posterior tarsi somewhat as in fra- ternum. The elytra in the female are nearly as \n f rater num but have the sides more parallel. PSELAPHIDiE. On recently arranging my long-neglected material in this remark- able family, I found so much to correct and explain in my earlier work and, incidentally, so many undescribed and interesting spe- cies, which had been gradually acccumulating, that it seemed to me a few notes might not be unacceptable to general students of the famil3\ In the arrangement of the tribes I have followed the order proposed by Mr. A. Ralfray, in his valuable revision published a few years since in the " Revue d'Entomologie." The mode of antennal insertion in this family does not seem to have been dwelt upon thus far in systematic works. The first joint is attached to the under part of the sides of the front by the upper part of its base, the basal parts being, as it were, turned upward to the point of attachment. This structure, which is of course not essentially different from that seen elsewhere in the Coleoptera ex- cept in degree, is best displayed in such genera as Pselaphus and Tychus ; but at the same time it is a constant peculiarity of the family ; it restricts the motion of the antennae almost to a hori- zontal plane. Faronini. The general form of the body in this tribe resembles that of the Euplectini, but many features, and especially the tarsus of Faronus and its immediately i-elated genera, show that it is also very closely allied to certain Staphylinidae. The tarsus of Faronus is exactly similar in structure to that of many Oxytelini, and the transverse pubescent line of the first visible dorsal segment, a very important and characteristic modification in the true Faronini, is frequently seen in the Omalini. The tribe is thus truly intermediate between the Staphylinidae and Pselaphidae, but these remarks apply fully only to the small group having staphylinide tarsi referred to above. 434 Coleopterological Notices, V. The second section of Raffray, having the tarsi normally pselaphi- dous in structure, should constitute a distinct tribe, intermediate between the Faronini and Euplectini, for, in the present family, a difference in tarsal structure such as this, is of far greater impor- tance than any possible modification of the ungues. At the same time, an extraordinary character, hitherto escaping record as far as I can discover, shows that the tribe Faronini, in its limited sense, is in reality very isolated. The sexual modifica- tions at the apex of the venter are bilaterally asymmetric. Whether or not this occurs in Faronus I am unable to state at present, but it is a common condition in both of our genera, and is confirmed by large series of several species in my cabinet. The genera of this tribe thus far known are as follows, those not occurring within the limits of the Unites States being distinguished by an asterisk : — Tempora obsolete, the eyes very large, extending to the base. ^Faioiiidius Tempera large and long behind the eyes, the latter smaller. Tempora angulate ; intermediate coxae not separated by a mesosternal pro- cess ; metasternum short *FaroniIS Tempora not angulate ; intermediate coxae separated by a narrow meso- sternal lamina. Metasternum and elytra rather short (types of genus misella and parva Shp.) ; front narrowed, tlie antennal prominences approximate, sepa- rated by a longitudinal sulcus which is expanded behind the frontal margin ^Sagola Metasternum long, in a longitudinal line through the acetabula about twice as long as the intermediate coxae ; front wide, not tuberculiform, the antennal prominences widely distant, separated by a non-sulciform depression, having a very large, isolated, extremely deep and sensitive pit at some distance behind the apical margin ; nuclial constriction simple beneath ; elytra long ; first visible dorsal segment very short, transversely lineate with minute pubescence Sonoiua Metasternuxn short, in the line of the acetabula scarcely at all longer than the intermediate coxae ; head as in Sonoma, but with two sensi- tive patches in the nuchal constriction beneath ; eyes rather more con- vex and prominent ; elytra short ; first visible dorsal nearly as long as the second and entirely similar to it, completely devoid of the pubes- cent line RafoilUS Metasternum and elytra very short, the latter scarcely as long as the pro- thorax ; front broad, the antennae widely separated ; vertex with two foveas, not isolated from the frontal pit but joined by a foveiform chan- nel ; basal segment of the abdomen without the transverse subpu- bescent line ^Deleilda. Coleopterological Notices, V. 435 Delenda Croiss. (^Eusonoma Reit.) has been recently proposed (Coleopterologiste, 1891, p. 152) for a small species from Asia Minor. It is closely related to Rafonus but appears to differ decidedly in the structure of the upper surface of the head. SONOm A Casey. In this genus the head is generally small, the eyes well developed, the tempora somewhat variable, generally rapidly convergent and rounded to the neck, sometimes rounded and about as prominent as the eye, never in the least angulate. Upper surface constantly with two small nude post-median fovetfi, and a large extremely deep abruptly excavated subapical pit, which is always more acutely rounded behind and with its anterior margin more transverse. On the under surface there is a deep transverse sulcus just behind the mentum and maxillae, the plane of these parts sloping rapidly up- ward from the base, the base of the maxillary cardo greatly ex- posed ; there is also a deep transverse and perfectly simple nuchal constriction. The under surface never has anj sign of the singular and complicated excavations and caringe so common in Sagola. The maxillary palpi have the first joint minute, simple and scarcely more than one-third as long as the second, otherwise nearly as in Sagola. Antennaj submoniliform, with the joints loosely connected throughout, as usual in the tribe, gradually thicker toward apex and with the basal joint much thicker and longer than the second. The antennae are more clavate than in Sagola, but much less so and shorter than in Rafonus. The pro- notum has constantly two small discal fovese at the middle, besides the complex subbasal impressions, and the metasternum a long broad deep canal extending posteriorly from the outer side of the middle acetabula. The remarkable asymmetric modifications of the sixth ventral segment of the female and the ventral pygidium of the male have been alluded to above. They are present in both of our genera, and probably constitute one of the most characteristic distinguish- ing features of the tribe. The asymmetry affects very different forms in the various species of the same genus, as may be seen from the few examples figured on the plate.' ^ Tlie staphylinide genus Palamhius is also remarkable in having asym- metric male sexual characters at the ventral apex. 436 Coleopterological Notices, V. I cannot entirely agree with Mr Raflfray in considering the head in Sonoma as even broadly tuberculate. If the front in this genus has an antennal tubercle, it is difficult for me to conceive of any method of distinguishing between the presence or absence of a tubercle. Probably there is no such line of demarcation, but assuredly if the front in Sonoma is tuberculate, there are very few genera known to me which might not be forced by effort of the imagination into this same condition. In my own opinion, the tuberculate condition can only obtain when the front is strongly narrowed and more or less prolonged, with the antennae approxi- mate at base, the two supra-antennal prominences then come to- gether, or nearly so, to form the tubercle. My reasons for maintaining the validity of this genus, which is said by Mr. Raffray (Rev. d'Ent., 1898, p. 15) to be identical with Sagola, are several. In the first place, the genus Sagola as consti- tuted in the interesting work of Raffray, is evidently composite, and the cephalic chai-acters alone of such species as excavata and snlcata of Broun, show that these at least are very aberrant and in all probability generically distinct. The peculiar frontal pit in Sonoma is such a constant and characteristic feature, that any decided modification of it is almost sure to be accompanied by other striking differences. Again, the fact that in our own fauna we have two distinct genera of this tribe, both conforming to the general organization of Sagola, tends still further to indicate that neither of them can be identical with that genus. Finally, the fact that a considerable number of Californian species, all indeed known from that region, have certain characters, previously disregarded but here assumed to be of generic value, perfectly and completely con- stant, tends to show that the genus Sagola as now organized is really a group of genera, perhaps as truly so as the old genus Euplectus. This will I think be admitted if, as in the present case, the newly discovered species range themselves into groups having certain peculiarities of abdominal, cephalic or thoracic structure in common. The generic value of these characters will depend solely upon their constancy throughout groups of species, and not upon any previously assumed criterion of their relative importance. Our species are well characterized and may be distinguished as follows : — Black or piceous-black, the elytra rufous ; antennae rather stout but of the usual length isabellae Coleopterological Notices, V. 437 Rufous or flavo-testaceous in various shades, never in the least black or piceous. Terupora as prominent as the eye, rounded COrticiiia Tempora always less prominent than the eye. Head as wide as the prothorax ; tempora parallel but less prominent than the eye ; prothorax hexagonal grandiceps Head invariably distinctly narrower than the prothorax. Prothorax about as long as wide longicollis Prothorax more or less strongly transverse. Elytra fully twice as long as the prothorax ; frontal margin much narrower than the neck. Head larger ; tempora at first moderately convergent, then strongly rounded to the neck Slllisiniilis Head very small, much narrower than the prothorax ; tempora extremely convergent and broadly, feebly rounded from the eye to the neck rilbida Elytra distinctly less than twice as long as the prothorax ; frontal margin subequal in width to the neck. Prothorax widest before the middle parTicepS Prothorax widest at about the middle; smaller species, 1.6 mm. in length, paler in color, the head relatively larger, with the tempora more strongly convergent and broadly rounded from the eye ; elytra shorter, more abruptly expanded and rounded at the sides behind Cavifrons S. grandiceps n. sp. — Slender, parallel, polished, subimpunctate, pale rufo-testaceous, the pubescence coarse and sparse. Head large, as wide as the prothorax, wider than long, the frontal margin bisinuate and as wide as the neck, equalling three-fifths of the maximum width ; eyes well developed, moderately convex ; tempora parallel behind the eyes but not quite as promi- nent, then strongly rounded to the neck ; subapical fovea very large, deep, nearly as wide as long, triangular, with the apex behind ; foveas of the vertex as usual ; antennae slender, as long as the head and prothorax, the outer joints incrassate. Prothorax hexagonal, but slightly wider than long, widest and narrowly rounded at the middle, the sides almost equally, strongly convergent and nearly straight thence to base and apex, the latter but very slightly narrower than the base ; large subbasal impression as usual, punc- tate in the middle and just behind each lateral extremity, also prolonged anteriorly at the sides, each spur extending to and including one of the usual discal punctures ; lateral subbasal fovese isolated. Elytra fully as long as the head and prothorax and one-half wider than the latter, rather longer than wide, the sides nearly straight, feebly divergent, broadly, feebly arcuate near the apex, the discal stria excavated beyond the middle. Abdomen rather longer than the elytra but scarcely as wide, parallel, the border relatively not quite as wide as usual ; structure throughout normal, the fourth visible dorsal nearly one-half longer than the third. Length 1.4 mm. ; width 0.35 mm. 438 Coleopterological Notices, V. California (Sta. Cruz Co.). The male of this remarkably isolated species has the venter abruptly and strongly, subcircularly concave near the apex, the sides of the concavity on the disk of the fifth segment acutely ele- vated, the cusp-like elevation with a tuft of long stiff setae. In the female the transverse apex of the sixth segment is a little more emarginate on the right, the middle produced as an abrupt rounded cusp. A single pair. This is the smallest, narrowest and most parallel species of the genus. S. loiigicollis 11. sp. — Moderately stout, depresseri, polished, impnnctate, rufo-testaceous and coarsely, very sparsely pubescent throughout. Head about four-filths as wide as the prothorax, distinctly wider than long, the frontal margin feebly arcuate, equalling one-half the maximum width and as wide as the neck ; eyes rather large, moderately prominent ; tempora to the neck as large as the eye, strongly rounded, not at all prominent ; frontal pit large, oval, more acutely rounded behind, abrupt, extremely deep and cavernous, with the bottom spongy ; fovese of the vertex small, nude, situated behind the middle and distant by less than one-third of tlie total width ; anlennje a little longer than the head and prothorax, gradually slightly thicker toward tip, eighth joint subglobular, ninth and tenth transverse. Prothorax very nearly as long as wide, widest before the middle where tlie sides are strongly rounded, very strongly convergent anteriorly, sinuate near the apex, the latter feebly subtubulate, convergent and nearly straight in basal half ; discal fovefe minute, at the middle, separated by one-fourth the width ; transverse impres- sion just behind basal third straight, abruptly, minutely foveate at the middle and just behind each end ; lateral foveas at basal fourtVi large, nude and free. Elytra subquadrate, two-thirds longer than the prothorax and, near the apex, nearly twice as wide ; sides more inflated and arcuate posteriorly ; sutural striae coarsely punctate near the base, discal very coarsely, deeply impressed and coarsely punctate in basal half, continued very feeldy and indefinitely by a series of feeble punctures nearly to the apex, approaching the suture; intermediate region with a series of two or three coarse subbasal punctures. Abdomen about as long and wide as the elytra, the first visible dorsal scarcely more than one-half as long as the second, with the interrupted pubescent line broad. Length 1.6 mm. ; width 0.6 mm. California (Sta. Cruz Co.). The single male before me has the abdomen deflexed behind, the venter broadly, indefinitely impressed near the apex but without further modification, except a very feeble transverse tumidity near the anterior margin of the sixth segment. Seventh or anal seg- ment of the usual structure, with the oblique asymmetric median portion rounded throughout behind. Coleopterological Notices, V. 439 The unusually elongate prothorax will readily distinguish this species. S. Stllisimilis n. sp. — Rather wide, feebly subcuneiforin, polished, im- puiictate, rufo-testaceons throughout ; pubescence very sparse. Head wider than long, slightly though distinctly narrower than the prothorax, the frontal margin arcuate, much narrower than the neck ; eyes well developed, convex ; tempora moderately convergent, broadly rounded to the neck ; subapical pit large, very deep, abrupt, but slightly longer than wide ; two punctures behind the middle separated by much less than one-third the width ; antennse two- fifths as long as the body, slender, last three joints gradually larger, basal joint thick, elongate, cylindrical, nearly as long as the next two. Prothorax one-third wider than long, widest at the middle where the sides are strongly rounded, strongly convergent anteriorly, more feebly so in basal half and feebly sinuate ; base two-thirds wider than the apex ; median punctures faint ; subbasal excavation large, deep, transversely lunate, with a deeper punctiform fovea at the middle and each end ; lateral subbasal fovese isolated, large, deep. Elytra as long as the head and prothorax, two-thirds wider than the latter, about as long as wide ; sides feebly divergent, broadly arcuate ; discal punctate stria deeply excavated before the middle ; the other punctures and sutural stria as usual. Abdomen about as long and wide as the elytra, the first visible dorsal short, with the usual pubescent line ; fourth nearly one- half longer than the third. Legs slender. Length 1.7 mm. ; width 0.65 mm. California (Sonoma Co.). In the single male the abdomen is deflexed toward apex, the venter broadly, indefinitely impressed behind, the fifth segment not modified but having the pubescence erect, with a very wide area in apical half completely glabrous, impunctate and highly polished, the posterior edge even throughout; sixth with a transverse, feebly tumid line behind the anterior margin, bearing a fringe of erect setae. Anal segment with the unevenly oval included segment far to the left of the center. This species is allied to parviceps, but differs in its larger head with relatively much narrower frontal margin, and in the male sexual characters. S. rilbida n. sp. — Broader, feebly subcuneiform, polished, impunctate, sparsely pubescent, deep rufo-testaceous throughout, the elytra paler. Head small, scarcely more than two-thirds as wide as the prothorax, wider than long ; eyes large, convex, the tempora very rapidly convergent and broadly rounded to the neck, the latter distinctly wider than the truncate frontal mar- gin and rather more than one-half as wide as the maximum width ; frontal pit deep, abrupt, acutely rounded behind ; fovese small, behind the middle, distant by nearly one-third the width ; antennae two-fifths as long as the body, 440 Coleopterological Notices, V. gradually and distinctly incrassate toward apex. Prothorax fully one-lialf wider than long, widest at the middle where the sides are very strongly rounded, thence very rapidly convergent and broadly sinuate to the neck, less convergent and just visibly sinuate to the base, which is about twice as wide as the apex ; median fovese very feeble, separated by rather more than one-fourth the width ; impression at basal fourth broadly, evenly arcuate, minutely foveate in the middle and at each end ; lateral impressions large, disconnected. Elytra confusedly sparsely and very feebly punctulate, rather longer than wide, fully twice as long as the prothorax and two-thirds wider; sides very feebly, gradually divergent from base to apex and just visibly arcuate; discal stria deeply, coarsely impressed in basal half. Abdomen fully as wide as the elytra but barely as long ; border strongly inclined, one-fifth as wide as the disk ; first exposed dorsal one-half as long as the second, with the usual fine pubescent line ; two to four gradually increasing in length. Legs moderate, slender. Length 1.6-2.1 mm. ; width 0.6-0.7 mm. California (San Francisco and Sta. Cruz). The male has the abdomen more deflexed at apex, the venter broadly, indefinitely impressed near the tip, but not otherwise at all modified ; the anal segment has a cuneiform, anteriorly pointed and submedian part, nearer the left than the right side and gradu- ally flexed to the right anteriorly. This median part is probably homologous with the flat enclosed pygidium of certain Euplectini, but in the latter group it is bilaterally symmetrical. The female has the transverse apex of the sixth ventral modified in a feeble but complicated and indescribable manner, the anal segment behind it broadly angulate and slightly but acutely produced at tip. Not closely allied to any other species, the largest of the genus, about equal to Rafonus tolulse. It is represented before me by a large and homogeneous series. S. parTiceps Makl.— Bull. Mosc, 1852, ii, p. 372 (Euplectus) ; Brendel : Bull. Univ. Iowa, 1890, p. 79 (Faronus) ; Raffray ; Rev. d'Ent., 1893, p. 30 (Sagola). Rather broad, deep rufo-testaceous, polished, impunctate and sparsely pubescent throughout. Head small, transverse, fully three-fourths as wide as the prothorax, with the usual sculpture ; tempora nearly straight behind the eye but distinctly convergent, then more strongly rounded to the neck, the latter but slightly wider than the apical margin. Prothorax rather large, about one- fourth wider than long, widest and strongly rounded distinctly before the middle, the sides convergent and deeply sinuate thence to the base, the latter two-thirds wider than the apex ; sculpture Coleopterological Notices, V. 441 nearly as in suhsimilis. Elytra longer than the head and protho- rax, fully three-fourths wider than the latter, nearly as long- as wide, with the usual sculpture. Abdomen rather longer than the elytra and fully as wide, of normal structure. Length 2.0 mm.; width O.V mm. The male in the LeConte cabinet from which I have taken these characters, is in an imperfect condition, lacking the antennae; it is one of the original Frankenhseuser types. The fifth ventral is broadly, feebly emarginate almost in median two-fifths, the surface bordering the emargination feebly concave, polished and glabrous ; sixth broadly, feebly lobed anteriorly, the lobe fitting the emargina- tion of the fifth, the surface along the edge of the lobe thrown up in a distinct acute and arcuate ridge, bearing an erect fringe of setae, and, behind the ridge, feebly impressed, glabrous and pol- ished. Anal segment with the usual median piece far to the left of the center. RAFONUS n. gen. This genus resembles Sonoma in general organization and form of the body, but differs greatly in many points, the generic value of which it is difficult to overlook. The head is smaller than the prothorax, the frontal m'argin broadly augulate, subequal in width to the neck and rather less than one-half as wide as the width across the eyes, the antennal prominences strongly elevated, widely distant and separated by a broad rounded depression, which is not at all sulciform. Immediately behind the line of the antennae there is a very large and extremely deep pit, as in Sonoma, abruptly de- fined throughout its circumference, more acutely rounded behind and subtruncate anteriorly ; there are also two distant nude foveae on the vertex. The maxillary palpi have the first joint very small. The antennae are slender, moniliform, one-half as long as the body, the last three joints abruptly wider, forming a loose, but distinct club. Prothorax slightly transverse, with the usual complex trans- verse, subbasal impression and isolated lateral foveae, without discal foveffi. Elytra much shorter than wide, but slightly longer though much wider than the prothorax, the sides strongly divergent. Ab- domen at least three-fourths longer than the elytra, the four first visible dorsal segments gradually increasing in length. Annals N. Y. Acad. Sci., VII, Nov. 1893.— 29 442 CoJeopferological Notices, V. The single species was described by LeConte under the name Faronus tohdee. It occurs in Pennsjivania and Georgia and ap- pears to be rare. EUPLECTINI. The tribes or groups Euplectini and Trichonyni of Reitter and Raffray, cannot be maintained as distinct and natural aggregates of genera, and should be united to form the single tribe Euplectini. The auxiliary tarsal claw varies by successive degrees in different genera and species otherwise closely related, so that it is impossible to draw any line of demarcation between two groups founded upon this character, or any other which it seems possible to discover. The second tarsal claw is distinctly visible as a minute hair-like appendage in at least several species of European Euplectus, in Trimiopsis, and also in Actium, which was recently re-described by Mr. Raffray under the name Proplectus and placed in the "Tricho- nyni." I have seen the second rudimentary claw plainly in Bihlo- porns bicanalis and Euplectus californicus. Finally in Eujjlectus crinitiis the auxiliary claw becomes as large, conspicuous and fully formed as in Trichonyx itself, and yet in general habitus and details of structure crinitus is urimistakably very closely allied to Euplectus, and should not be widely separated from that genus. The so-called second claw is always in the nature of an appendage, even in Trichon3'x, Oropus and other typical trichonychide genera. That is to say — the large claw is in every case perfectly in the plane of the axis of the tarsus, the auxiliary claw projecting laterally from its base. In view of the great diversity in the relative size and distinctness of the second tarsal claw, in pronotal structure and in the general type of male sexual characters among our species of Euplectini, a revision of them from a generic standpoint seems imperative. This I have attempted in the following table, it being unnecessary in treating a single limited fauna to indicate groups or subtribes by special designation : — Antennae inserted at the inferior apical angles of an extremely narrow advanced and porrect frontal process, the tubercle formed by a complete amalgama- tion of the antennal prominences without trace of dividing sulcus ; basal joint of the antennae elongate-oval ; ungual appendage not distinct. Rliiiioscepsis Goleopterological Notices, V. 443 Antennje sliglitly less approximate, the frontal tubercle shorter and wider but very pronounced, with the sides behind it constricted, the antennal prominences narrowly separated by a very deep sulcus ; antennse as in Oropus ; ungual appendage visible but exceedingly minute 9lorius Antennae not inserted on a frontal tubercle, more or less widely distant at base 2 2 — Antennae geniculate, the basal joint elongate ; prothorax bilobed ; appen- dage of the tarsal claw distinct Rliexilis Antennae not geniculate, the basal joint normal 3 3— Ungual appendage long and conspicuous, approaching one-half the length of the principal claw 4 Ungual appendage more or less minute, but generally visible, in some cases apparently obsolete 5 4— ^Prothorax with an acute marginal tooth at each side near the base ; first dorsal segment longer than the second ; male sexual modifications afl'ect- ing the fourth dorsal segment OropiIS Prothorax without lateral sj^ines, but frequently minutely and unevenly crenulate along the sides in basal half; first dorsal not distinctly longer than the second. Head more transverse ; body shorter ; pronotum with a fine subentire median groove ; secondary male sexual characters aflecting the fourth tergite. Rliexidius Head less transverse ; body longer, more parallel ; pronotum without discal impression; male characters near the apex of the abdomen beneath, or near the middle of the lateral edges ; maxillary palpi partially received in deep sublateral fossae, which ai'e separated from the cardo of the max- illae by minute slender porrect processes Railiecia. 5 — Antennal club gradually formed, the last joint relatively moderate in size 6 Antennal club consisting almost entirely of the larger abrupt terminal joint ; pronotum without discal impressions ; first dorsal segment subequal to the second 12 G — Prosternum not carinate along the middle 7 Prosternum finely but strongly carinate in the middle throughout the length ; antennae less distant than in Eiiplectus 11 f — Prosternum with two distant diverging longitudinal carinae ; elytra with two discal striae and three basal foveae ; abdomen without trace of basal impressions or carinae, the segments equal in length Oropodes Prosternum without diverging lines ; abdomen at least impressed at the middle of the first two or three dorsal segments 8 8 — First dorsal not longer than the second ; palpal fossae wide, shallow, more inferior and posterior, and not separated from the maxillae by porrect processes 9 First dorsal much longer than the second 10 9 — Eyes large, bordered above and beneath by a broad abrupt channel ; pro- notum with three very large, feebly connected, subbasal excavations, without discal impression ; elytra and sexual characters as in Euplectus. Acolonia 444 Coleopierological Notices, V. Eyes normal. Proiiotum with a subcentral discal impression ; elytra with a discal stria. Head large, truncate, the antennae very remote ; abdomen with distinct basal carinse ; male with a transversely subrhomboidal and longitudi- nally carinate terminal segment of the venter EuplectllS Head generally smaller, the front always more abruptly and strongly narrowed ; antennae less distant ; abdomen without basal carinas ; male with the flat oval subenclosed ventral pygidiura of Ramecia and Actium ; species in general decidedly more minute than in Euplectus. Tliesiastes Pronotum without a discal impression ; elytra without a discal stria. Bibloplectiis lO — Pronotum without a discal impression Triluioplectll» 11 — Pronotum with the three subbasal fovese, not transversely connected ; each usually prolonged forward in an impressed line BibloporilS Pronotum having the subbasal foveas connected by a transverse sulcus. Antennae moderately distant at base ; eyes rudimentary in the female ; presternum long before the coxae ; tenth antennal joint normal ; pronotum with an elongate discal sulcus ; male with feeble abdominal characters. £utyp]ilUH Antennae somewhat less distant at base ; eyes nearly similar in the sexes ; prosternum short ; tenth antennal joint larger than usual ; pronotum with a small subapical discal impression ; body shorter, convex ; male with a small flat subcircular and enclosed pygidium at the ventral apex. Tliesium 12 — Prothorax with rather well-defined edges at the sides toward base, and with two distinct latero-subbasal foveae on the disk ; elytra with a discal stria Actium Prothorax without lateral edges or sublateral foveae, the transverse sulcus continued on the flanks ; elytra without discal stria, the latter replaced by a larger deep and subelongate basal impression Triniiopsis Distinguishing peculiarities in thoracic structure both pronotal and prosternal, it will be noticed, have been freely used in the above table in defining the genera. I am quite convinced that this is the proper course to take in dealing with the genera, at any rate in some parts of this particular tribe : first, because every distinct peculiarity in the structure of this part of the body, appears to be accompanied by radical divergencies in other important features. Taking the old genus Euplectus as represented within our faunal limits, for example, we find that all of those species without the discal pit of the pronotum are distinguished either (Ramecia) by a formation of the tarsal claws identical with that of Trichonyx, or (Bibloplectus) by an extremely minute size of body and more Goleopterological Notices, V. 445 approximate antennae, or (Acolonia) by a peculiar structure of the lateral parts of the head near the eyes. Secondly, because we find these differences accompanied in every instance by radical divergencies in the type of male sexual manifes- tation, a feature which in the Pselaphidae possesses an importance which has not always been duly appreciated. In many parts of this family the developmental energy, so to speak, or the energy expended in differentiating species, seems to have been exerted solely upon the males, the females remaining mutually almost similar. This is a familiar fact among the species of lleichenbachia and Batrisus. Types of male sexual modification have therefore great importance, and, when the same type pervades a number of species otherwise allied, we are frequently even compelled to sepa- rate and define genera by such characters alone, as has beeu done by Reitter in the case of Ctenistes and Sognorus and as I have already tried to demonstrate in regard to the allies of Bryaxis (Bull. Cal. Acad. Sci., II, p. 179). MORIITS 11. gen. This remarkable genus occupies a position with respect to Oropus nearly corresponding with that of Rhinoscepsis to Euplectus. The head is strongly but gradually narrowed before the eyes, forming at apex a wide but strong antennal tubercle, rendered still more prominent by lateral constrictions immediately behind it, the very pronounced antennal prominences separated by a coarse, deeply ex- cavated fossa, which behind them becomes shallower and bifurcates, sending a feeble oblique sulcus to each of the vertexal fovese. The antennae are almost exactly as in Oropus though very narrowly separated at base. The under surface is smooth and without trace of caringe or palpal fossae, but has in the middle just behind the mentum, a very abruptly and strongly elevated, broad and parallel elevation which terminates abruptly midway to the neck. Maxil- lary palpi well developed, sparsely pubescent ; first joint small ; second finely pedunculate in basal half, the apical half abruptly and strongly claviform ; third smaller than the clava of the second, sub- globular; fourth nearly as long as the preceding together, stouter, fusiform, twice as long as wide, with a long slender terminal pro- cess. The other oral organs are normal in structure, the mentum small, the labial palpi minute and slender. Frosternum long, ob- liquely, feebly biimpressed, the mesosternum with two anteriorly 44G Coleopterological Notices, V. convergent carinae and three pubescent foveas, and the metasternuni in the middle one-half longer than the intermediate coxae. The an- terior coxa3 are long' and conical, the intermediate narrowly sepa- rated by the meso- and metasternal processes which meet just before their median line, the posterior transverse, contiguous, moderately prominent internally. Abdomen with six dorsal and seven ventral segments, the first ventral unusually long, greatly visible behind the coxte throughout, and, in the middle, nearly one-half as long as the second, the latter very large, as long as the entire remainder ; first dorsal covered, the second much longer than the third, with a deep, transversely oval and pubescent excavation at the middle of the base ; margin moderately wide, inclined. There appears to be but one species as follows: — M. OCCidens n. sp. — Moderately stout and couvex, polished, dark rul'o- testaceous tliroughout, subimpuiictate, ttie elytra coarsely sparsely and very feebly rugoso-pnnctate ; pubescence long, coarse, erect, not very abundant except at the autero-lateral and under surfaces of the head where it is; erect bristling and very dense. Head as wide as the prothorax, as long as wide ; eyes small, just behind the middle ; outline behind them almost semi-circu- lar; fovese on a line through the eyes, distant by one-half the total width ; antennae a little longer than the head and prothorax, stout, first joint cylin- drical, longer than wide, second a little narrower, globular, three to eight still slightly smaller, transverse, five and seven larger than six and eight, ninth and tenth larger, transverse, eleventh subquadrate, broadly conical at apex. Prothorax nearly as wide as long, widest at apical third, the sides thence feebly convergent and straight to the base but with a shallow emargination midway, strongly convergent and sinuate anteriorly to the neck, the latter two-thirds as wide as the base ; disk with a strong transverse excavation at basal third from side to side, divided into three parts by two cariniform elevations, the lateral portions irregular and continued to the base, the median consisting of three large coaleacent fovese, the middle one more posterior, continued forward beyond the center of the disk by an almost imperceptible impression ; surface just before the basal margin divided into five nearly equal deep impressions by four short longitudinal carinse, the lateral communicating with the irregu- lar lateral impressions as before mentioned, and the middle one similarly with the median discal impression, the two others deeper and more foveiform. Eljjtra short, two-fifths wider than long, one-half longer than the prothorax and fully twice as wide, one-half wider near the apex than at base ; sides strongly oblique and nearly straight ; humeri obsolete ; disk with the single arcuate sutural stria only, also with a deep stria and post-humeral fovea on the flanks, each with four basal fovese, the two infra-humeral coalescent and prolonged posteriorly for a very short distance as a broad gradually evanes- cent impression ; intermediate fovea isolated, without trace of stria. Abdomen fully as wide as the elytra and distinctly longer. Legs slender ; posterior Goleopterological Notices, V. 447 tarsi long and slender, the third joint a little longer than the second, with a rather long single claw, having an exceedingly minute basal appendage as in Euplectus. Length 1.6 mm. ; width 0.6 mm. California (Sta. Cruz Co.). Tiie unique type is unfortunately broken into a number of pieces from which the measurement has been compounded ; it is apparently a female. OROPUS Casey. The median thoracic sulcus, which is so characteristic a feature of Oropus and Rhexidius, is subject to sing'ular malformation in both of these m which is not rounded as in the other species but rectangular, with straight sides and apex, Coleopterological Notices, V. 467 and is much longer than wide, with the surface longitudinally and broadl)^ convex ; also, at lateral fourth of the third ventral segment and at the middle of its length, a peculiar oblique lamelliform bilobed and setose process. This species is readily separable from any of the others by the peculiar form of the head. A. brCTipeniie n. sp. — Minute, somewhat stout, convex, uniformly dark rufo-testaceous. polished, subimpunctate ; pubescence short, subrecum- bent, rather abundant. Head distinctly shorter and narrower than the pro- thorax, wider than long ; foveae small but deep, distant by one-half the total width, not distinctly spongiose, connected by a deep entire sulcus ; antennal tubercles rather prominent ; eyes moderate, from above slightly prominent, not quite as long as the tempora, the latter subparallel, feebly rounded and almost as prominent as the eyes ; antennje two-thirds longer than the head, second joint stouter than the first ; under surface with sparse erect and finely capitate setse. Prothorax slightly wider than long, the base and apex sub- equal, widest before the middle where the sides are broadly, evenly rounded to the apex, abruptly convergent and broadly, feebly sinuate from the middle to the base ; sulcus fine, deep, at basal fourth, broadly, very feebly angulate but not perceptibly dilated in the middle ; lateral foveas large and nearly nude. Elytra not quite one-half longer and three-fourths wider than the prothorax, transverse ; discal stria extending to apical third. Abdomen much longer and slightly narrower than the elytra. Legs moderate, the two ante- rior femora, and especially the intermediate, incrassate in the male. Length 0.9 mm. ; width 0.3 mm. California (Sta. Cruz Co.). A single pair exhibiting scarcely any sexual difiFerences in general form. The venter of the male is not tuberculate near the sides, but, as usual, the second ventral is broadly feebly impressed at lateral sixth especially toward base. The short elytra of this species will distinguish it at once from any other. It is the smallest of the genus. Batrisint. BATRISUS Aube. The following interesting forms belong to the first division of LeConte, but differ altogether hova ferox and ionse in the type of male sexual modification, having the anterior legs simple but the posterior more or less distorted. This small group may also pos- sibly receive confinis Lee, which is known only by the unique female type. 468 Coleopterological Notices, V. B. caTicms n. sp. — Moderately slender, very convex, polished and coarsely pubescent throughout, brownish-rufous in color, the elytra brighter. Head distinctly wider than the prothorax, wider than long, coarsely but feebly rugoso-punctate, polished, with a long carina above the flanks ; occiput tri- cristate ; eyes at more than their own length from the base, well developed ; nude fovecC joined by a circumambient sulcus ; antennae one-half as long as the body, second joint longer than the third, three to eight equal in width becoming shorter, ninth and tenth abruptly wider, slightly transverse, club paler in color. Frothorax a little longer than wide, widest near apical third ; median subbasal fovea large, lateral distinct ; median sulcus very feeble, on each side of it a series of two or three acute recurved spines ; subbasal spini- form tubercles distinct ; surface between the median fovea and base finely carinate, two foveas also at the basal margin on each side of the middle, also one on the flank just before the base and adjacent to another belonging to the prosternal parapleurae. Elijtra about as long as wide ; sides subparallel, broadly arcuate; humeri broadly exposed, rounded. Abdomen a little shorter and narrower than the elytra, the basal carinas separated by rather more than one-sixth of the entire width. Length 1.7 mm.; width O.ljS mm. North Carolina (Asheville). The description is taken from the male, the female being nearly similar but having very much smaller and subrudimentary eyes. The special sexual characters of the male affect the abdomen and posterior legs only, the venter having a moderate rounded subapical impression. The posterior trochanters have a compressed inferior dentiform lobe, and an internal apical process which is slender and contorted, the femora compressed, polished impunctate and feebly concave internally nearly throughout the length, the lower margin with a siuuation at basal third, the tibiae slender but gradually dilated internally near the middle; terminal process entirely want- ing ; tarsi normal. B. carolinae n. sp. — Slender, very convex, polished and coarsely pubes- cent throughout, bright rufo-testaceous in color, the elytra still paler. Head distinctly wider than the prothorax, nearly as long as wide, subscabrous ante- riorly, finely, sparsely punctate behind, with two nude foveas connected by the usual arcuate sulcus ; flanks carinate above ; occiput unicristate ; eyes moderately developed, far in advance of the base ; antennae one-half as long as the body, rather slender, the club gradual and rather heavy, second and fifth joints subequal, longer than the third or fourth. Prothorax a little longer than wide ; widest before the middle, the median subbasal fovea large ; sulcus subobsolete, between two series each containing two or three acute recurved spines, a similar spine also at the lateral margin just behind the middle ; subbasal tubercles well developed ; lateral foveas distinct ; at the basal margin two strong foveas at each side ; surface between the median fovea Coleopterological Notices, V. 469 and base finely carinulate ; general surface rather sparsely Imt asperately punctate. Elytra about as long as wide ; sides very feebly divergent from the distinct humeri and nearly straight ; intrahumeral excavation large and strong. Abdomen slightly narrower and much shorter than the elytra, the basal carinse strong, approximate, separated by scarcely one-tenth of the total width. Length 1.6 mm. ; width 0.55 mm. North Carolina (Asheville). This species is allied to cavicrus, but differs in its unicristate occiput and very much in the sexual characters of the male, the venter in that sex having a larger wide impression at the apex. The posterior femora are bowed, with the convexity downward, strongly clavate, the clavate part strongly punctate externally but impunctate and polished internally, gradually narrowed at the middle and attached by a slender peduncle which is nearly one- half as long as the femur, the corresponding tibite swollen toward the middle and the trochanters with a long contorted inferior pro- cess. Two males. It is scarcely possible that this species can prove to be the same as covfinis Lee, for that is much larger and apparently lacks the four anterior pronotal spines. Carolivae is one of the most minute species of the genus, though juvencus Brend., which is stated to be 1.4 or 1.5 mm. in length, appears to be still smaller; it is related to carolinse but differs in its almost obsolete occipital crest and dark color, as far as can be inferred from the description of the single female type from northern Illinois. . The Pacific coast species form a homogeneous group, distinguished in general from the Atlantic coast forms by the fact that the sexual modifications are almost invariably concentered at the posterior extremity of the body, while in the latter they quite as constantly affect the anterior portions only, the curious cephalic and antennal characters of the eastern males being unknown — if we except a minute subbasal spicule of the eleventh joint — ^jn the western repre- sentatives. Another singular fact is that among these west coast forms, there are several which are separable more readily by female characters than b}^ those of the male. The species known to me may be distinguished as follows, cicatricosus not being represented in my cabinet : — Elytra finely punctulate; head not carinate ; pygidial modifications when present affecting the female only ; ventral excavation of the male large. Color of the body intense black throughout monticola 470 Coleopterological Notices, V. Color paler, dark piceous to rafous, the elytra always brighter and riifescent. Pygidium broadly, very feebly and evenly convex, similar in the sexes but a little shorter and broader in the female ; elytra shorter, the humeri obsolete and the sides more oblique OCCiduUS Pygidium differing in the sexes, in the female strongly tumid, in the male nearly flat and unmodified. Pygidial tumor of the female very large, compressed, broadly rounded in profile; body more robust {acideatns Lee, i. litt.)...albionicllS Pygidial tumor abrupt, acutely rounded in profile, the highest point being at the lower margin, the surface thence broadly concave to the upper margin (var. mendocitio and speculum Csy.) zepliyrinilS Elytra strongly though sparsely punctate ; head longitudinally carinate above the eyes ; pygidial characters probably common to both sexes ; ventral excavation of the male small. Ambient sulcus of the head continued to the base ; pronotum with a com- plex process at each side of the median subbasal fovea. ..cicatricosus Ambient sulcus not continued posteriorly beyond the fovese ; pronotum with a simple erect spiculate elevation at each side of the median fovea. Pygidium of the male small, transverse, broadly tumid, with a transverse polished and imi^unctate excavation along its lower margin. pygidialis Pygidium in both sexes with an abrupt, strongly elevated, compressed and cariniform tooth at the middle denticauda In these species the anterior femora, apparently in both sexes, have an elongate narrow area on the under surface which is strongly and transversely punctato-rugose. B» PySidialis n. sp. — Moderately slender, polished,, bright rufo-testa- ceous throughout, the abdomen rather darker ; legs pale, with the knees darker ; pubescence rather long, coarse, very sparse. Head as long as wide, subequal in width to the prothorax ; eyes moderate, very convex, scarcely be- hind the middle, outline behind them almost evenly, semi-circularly rounded ; nude fovete deep, connected by a distinct sulcus ; vertex impunctate, finely carinate at the base of the occiput; surface outside of the supra-ocular carinse finely sparsely and subasperately punctate; antennae a little longer than the head and prothorax, moderately stout, the basal joint emarginate above at apex and impressed on the surface behind the emargination, second very much smaller and narrower than the first, equal to the second and but slightly longer than wide, two to eight subequal, ninth but very slightly longer than the eighth, tenth trapezoidal, foveate within, eleventh stouter with an ante- riorly oblique spiculate tooth near the base. Prothorax not longer than wide, widest and broadly rounded before the middle, impunctate, the lateral sulci broadly impressed, median narrow, vanishing beyond the middle ; three sub- basal foveae moderate, connected by an extremely feeble biarcuate groove, the lateral each with an erect spicule immediately behind it ; spicule at the sides of the median fovea small, erect and simijle ; surface between the median Coleopterological Notices, V. 471 fovea and base minutely carinate, with two feeble fovese at each side near the basal margin. Elytra not quite as long as wide, one-half longer than the prothorax and about twice as wide, convex ; humeri tumid and minutely spiculate. Abdomen irapunctate, the first segment longer than the fourth, with two minute basal carinse separated by one-sixth of the entire width. Length 1.9 mm. ; width 0.65 mm. California. The two specimens in nay cabinet are males, the venter having a small deep rounded impression near the apex. The elytral punc- tures are not large but strong, asperate and very sparse. B. denticailda n. sp. — Rather slender, polished, piceous-brown, the elytra rufescent ; pubescence very sparse, coarse. Head but slightly wider than the prothorax, including the labrura a little longer than wide ; eyes small, just behind the middle ; basal parts behind them almost semi-circu- larly rounded ; vertex impunctate ; occiput feebly carinulate at base ; sides longitudinally carinate above ; foveae connected by a sulcus which is feeble in front; interantennal depression feeble; antennae short, not longer than the head and prothorax, the club gradual and heavy, eleventh joint with a slender anteriorly oblique tooth at basal fourth. Piothorax as long as wide, widest just before the middle ; disk polished, minutely, very remotely punc- tulate ; lateral grooves feeble, median impressed and traceable to apical fourth or fifth ; subbasal spines strong, simple ; biarcuate transverse sulcus distinct ; lateral fove?e well impressed ; surface between the median fovea and base finely carinulate; two sublateral foveas at each side near the basal mai-gin. Elytra not quite as long as wide, one-half longer than the prothorax and twice as wide ; humeri elevated and with a minute recumbent spiculate tooth ; disk distinctly but very remotely punctate. Ahdomen as wide as the elytra but shorter, the basal dorsal longer than the next two combined, the carinae short, distant between one-fifth and one-sixth of the total width. Legs moderate. Length 1.9-2.0 mm. ; width 0.6.5-0.7 mm. California (Siskiyou Co.). The description is taken from a male specimen, the ventral modification consisting solely of a rather small but deep rounded impression near the apex. In the female the curious pygidial cari- niform elevation is identical with that of the male, but the venter is not excavated; there is often, however, a very feeble impression at the position of the male excavation, this community of male and female impressions of the last ventral being a common character throughout large sections of the Coleoptera, as I have elsewhere shown ; it is observable also in albionicus. An analogous condi- tion, relating to the manifestation of male antennal structures in a rudimentary form in the antennge of the female, will be referred to under Beichenbachia tumida and its allied species. 472 Coleopterological Notices, V. On comparing the male of luculentiis with that of the typical sprettis in the LeConte cabinet from northern Georgia, I find that the two are wholly dissimilar in the frontal modification, as may be seen from the following statement : — Upper surface of the head flat, produced in the same plane beyond the antennfe in a short broad trapezoid, the apex transversely and evenly truncate and one-half as wide as the interantennal distance ; clypeus below the trapezoid with a dorsal setose tubercle which extends upward nearly to the level of the frontal margin but distinctly in advance of it ; basal joint of the antennae compressed beneath, the lower outline broadly arcuate and the under surface strongly asperate spretllS Front declivous, broadly truncate and biimpressed between the antennse, bearing at the middle of the beveled edge two approximate suberect and tuberculitorni teeth ; clypeus beneath with a dorsal tubercle as usual ; basal joint of the antennse broadly arcuate beneath and coarsely but simply punc- tate luciileiitus Sj^refus is one of the most minute species of the genus, appre- ciably smaller than luculentiis. It is probably quite local in habitat. The species described by me as cephalotes is identical with st7'i- atvs Lee, which was long ago very carelessly suppressed as a syno- nym of y/o6osws; it has scarcely anything in common with y/o6os«s, and possesses radically different frontal characters in the male. Sim- plex Lee. and aterrimus Csy. are both founded upon the female of this species, the types of simplex being two very immature females. btriatus may be readily known by its large head in the male, with the antennal joints two to four uniformly decreasing and with the basal joint not modified beneath, and also by the small pubescent vertexal fovete. ARTHMIVS LeConte. There can be no doubt of the validity of this genus, and its sepa- ration from Batrisus is a necessity in any natural scheme of classi- fication. Arthmius differs from Batrisus in the complete absence of an impressed line and post-humeral fovea on the flanks of the elytra, and in having a radically diflferent arrangement of the im- pressions and carinte at the base of the abdomen ; these characters alone would demand generic isolation, but, in addition, the form of the body is shorter and stouter — somewhat reminding us of Bry- axis as noted by LeConte, — the head entirely without trace of any Coleopterological Notices, V. 473 kind of foveal sulcus, and the prothorax devoid of longitudinal im- pressed grooves. In fact even the transverse line near the base is of a structure foreign to Batrisus, being simply a fine fold of the surface and not an impressed channel. The conformation of the base of the tergum is wholly dififerent from anything ever seen in Batrisus, there being two long strong carinse mutually distant by about one-half of the entire width of the abdomen, each separating two large transverse impressions ; so, instead of three impressions separated by two more approxi- mate cusps, which is the constant condition in Batrisus, we have here four impressions arranged in two pairs ; this is an extremely important character from a generic standpoint. The carina?, although similar to those of Bryaxis and especially Decarthron, are, singularly enough, never divergent as in those genera but always feebly convergent. The tarsal claws are as in Batrisus. It is useless to attempt to separate the species of Arthmius by referring to the females, as these possess no visible characters of dif- ferential value ; I have therefore based the following arrangement of the four species in my cabinet upon male sexual modifications alone: — Penultimate ventral segment transversely and deeply excavated. The excavation broadly rounded in front, rather abruptly defined through- out and occupying nearly the entire segmental width ; ventral pygidium strongly convex longitudinally, the surface ascending toward apex. New York to northern Georgia globicollis The excavation small, with the edge ill-defined and rounded throughout, not more than one-half as wide as the segment ; pygidium rather large, nearly fiat ; fifth antennal joint vt^yy much larger. Texas ....l)Ul1)ifer The excavation large, ill-defined and rounded at the edges except ante- riorly where it is broadly angulate ; pygidium nearly flat. North Caro- lina illTOlllttIS Penultimate ventral with an extremely deep excavation longer than wide, the sides of which are parallel and nearly straight, with rounded ill-defined edges. Florida gracilior In many of the tropical species the head is remqrkably modified in the male, but this is not the case in any thus far found within the United States. The modified antennal joints five to eight form, in all of our species, a more or less definite arc, and, on the under surface, are clothed with much shorter stouter and more recumbent setae. I have before me the female of two of these species, and in neither Aknals N. Y. Acad. Sci., VII, Nov. 1893.— 31 4*74 Goleopterological Notices, V. of them is there any structure at all approaching that figured by Brendel for that sex (Mon. PI. ix, f. tfib) ; the last ventral is always large, flat, or very feebly convex, perfectly even on the disk, and acutely rounded and feebly produced at apex. In con- sidering the excavated penultimate ventral and terminal pygidium of the male and the large flat apically prominent last ventral of the female, it is impossible not to discern a marked homology with Euplectus. The male pygidium is altogether absent in Batrisus, this being another very important generic distinction. The antenna figured in three positions by Dr. Brendel (1. c.) is very remarkable, and entirely different from anything which I have observed in this genus. A» llllllJifer n. sp. — Stout, strongly convex, highly polished and pale flavo-ferruginous throughout, impunctate, the elytra very sparsely punctu- late ; pubescence coarse, long but not dense. Head just visibly wider than the prothorax, subquadrate ; upper surface smooth, with two small nude fovese at basal third separated by rather more than one-half the total width, also with a feeble impression just behind each of the large feeble antennal prominences ; eyes large, prominent, at one-half of their own length from the base ; antennse one-half as long as the body, the fifth joint veiy large, subquadrate, nearly twice as wide as the fourth, eighth strongly acuminate externally at apex, five to eight forming the usual arc. Prothorax as long as wide, widest and broadly rounded before the middle ; sides feebly convergent and broadly sinuate toward base; disk even, strongly convex, with a small nude fovea at each side near the base, the two connected by a fine even straight and transverse fold of the surface ; basal fovese feeble. Elytra convex, one-third wider than long, nearly one-half longer than the prothorax and distinctly more than twice as wide ; sides evenly arcuate ; humeri nearly obsolete, feebly tumid. Abdomen from above fully as wide as the elytra but not quite as long, the first segment forming two-thirds of the whole. Length 1.5 mm. ; width 0.7 mm. Texas. The unique male, from which the description is drawn, appears to be somewhat immature. The anterior tibiae are strongly, tri- angularly toothed externally at apical third, and the penultimate ventral has an unusually small, strongly transverse excavation not more than one-half as wide as its disk, the impression nowhere abruptly defined; pygidium rather large, nearly flat. A female before me from Texas, probably of this species, is darker in color and with much shorter elytra. A. inTOlutuS n. sp. — Moderately stout, highly polished, dark red-brown, the elytra paler, bright red ; legs paler, brown ; integuments impunctate ; Coleopterological Notices, V. 475 pubescence long, coarse, erect but sparse. Head scarcely perceptibly wider than the prothorax, subquadrate, the upper surface smootli, even, not very convex, with two strong nude fovese separated by one-half the total width ; antennal tubercles wide and flat, each limited internally and posteriorly by a short oblique impression ; eyes large, prominent, at fully one-half their length from the base ; antennae one-half as long as the body, fifth joint but slightly wider than the fourth, eighth but little produced outwardly at apex. Protho- rax fully as long as wide, widest and broadly rounded at the sides before the middle, with a fine transverse fold before the base which is flexed abruptly forwai'd at right angles for a very short distance at its lateral extremities, the right angles enclosing a small nude fovea ; two foveje at the basal margin at each side deep and distinct. Elytra one-fourth wider than long, one-half longer than the prothorax and more than twice as wide, convex, impunctate, the sides broadly arcuate ; humeri rather prominent and tumid. Abdomen from above nearly as wide as the elytra but distinctly shorter, the basal seg- ment forming one-half the length. Length 1.4-1.5 umi. ; width U. (55-0.7 mm. North Carolina (Asheville). I took a large series of this species in the mountains of western North Carolina ; there is very little variation, but the female differs considerably from the male, being smaller, unicolorous and darker, and especially narrower, with shorter elytra and relatively longer abdomen, the latter having the last dorsal acutely pointed as in some species of Batrisus. The description refers to the male, the anterior tibiae having a lamelliform external tooth at apical third, the surface between this and the apex feebly impressed and with a small central foveola which encloses a condensed tuft of setae ; penultimate ventral with a large deep non-abrupt excavation, augu- late and abruptly defined anteriorly. This species differs greatly from bulbifer in the form of the tibial tooth, in addition to the other sexual characters. Bryaxini, RYBAXIS Saulcy. The species of this genus are not numerous, but appear to be well differentiated from Bryaxis by possessing a deep groove on the vertical flank of each elytron and a transverse biarcuate sulcus joining the lateral pronotal foveae. Although the sulcus is perfectly constant, exhibiting no tendency to vary in the direction of Bry- axis, there is notable inconstancy in the median fovea, which may be large and spongiose or completely obsolete, the sulcus then being simply abruptly bent and very feebly dilated at this point. Ilybaxis 476 Coleopterological Notices, V. is distinguished further from Bryaxis by the internall}' dentate an- terior tibiae of the male. The species known to me may be thus characterized : — Median pronotal fovea large circular and spongiose ; basal carinse of tlie abdo- men very short and remote Talida Median fovea obsolete or very feeble, never spongiose ; abdominal cariuae less distant. Antennal club nearly normal in the male, the anterior trochanters not apically spinose COlijuilcta Antennal club very large compact and subcyliudrical in the male, the anterior trochanters internally spinose near the apex. Body as in conjuncta ; male antennal club broader, the last joint not longer than the three preceding together ; tenth joint more than twice as wide as long breiideli Body as in Reichenhachia rubictmcia, but with larger elytra ; male antennal club more elongate, the tenth joint one-half wider than long, the eleventh as long as the four preceding, the tenth and eleventh with a large common flattened impression beneath, which, on the eleventh, is strongly and very coarsely asperate, on the tenth smooth luystica In hrendeli Horn, the flattened lower surface of the tenth antennal joint in the male is not smooth, but coarsely asperate except near the base. Valida differs greatly from sanguinea in having a larger circular pronotal fovea. Dr. Brendel indicates two varieties of con- juncta ; the first is not described and must therefore be regarded as unpublished, but, on the other hand, truncaticornis appears to be a valid species. R. mygtica n. sp. — Robust, convex, oval, black, the apical joint of the antennae paler ; elytra ruby-red, blackish at base and apex ; legs pale ferru- ginous throughout ; integuments polished, subimpunctate, the elytra sparsely and very obsoletely punctulate ; pubescence moderate in length, coarse, sparse. Head wider than long, very slightly smaller than tlie prothorax ; eyes large, prominent ; fovere large, deep, just behind the middle, separated by rather more than one-half the total width ; antennal prominences separated by a large deep and smooth concavity, without trace of fovea ; antennse stout, one- half as long as the body, second joint stouter but not longer than the third, fourth smallest of all, quadrate, fifth to seventh larger, slightly modified, eighth narrower, wider than long, ninth twice as wide as long, more acute internally, tenth very mitch longer and wider than the ninth. Prothorax two- fifths wider than long, widest before the middle, the sides convergent and broadly, very feebly sinuate thence to the base ; transverse sulcus gradually and feebly dilated in the middle but remaining abruptly defined; median fovea completely obsolete. Eli/tra but slightly wider than long, the sides feebly divergent, broadly arcuate, rounded at base for some distance to the Coleopterological Notices, V. 4T7 prothorax, the humeri distinct ; discal stria extending to apical fourth or fiftli. Abdomen, vievred laterally, scarcely as long as the elytra ; basal sefjnient with two straight divergent carinfe separated by one-third the discal width and scarcely one-third as long as the segment. Length 1.5 mm. ; width 0.75 mm. Rhode Island. The description is drawn from a male example which is appa- rently unique. BRYAXIS Leach. Those species having the dorsal surface of the abdomen similar in the two sexes, separated by Thomson under the name Brachy- gluta, appear to be entirely wanting in the North American fauna, all of our species entering the true genus Bryaxis as limited by Saulcy, Reitter and others. Nisa Csy., is a subgenus, differing from the true Bryaxis in having the medial of the three spongiose pronotal fovece much smaller than the lateral, and all verv feebly impressed, in having the trochanters larger — often spinose in the male, — the first dorsal segment entirely devoid of carina?, and the antennal club of the male curiously and intricately modified l)ut with the tergum simple; the venter is generally broadly and feebly impressed nearly throughout the length in that sex. The following is a distinct and interesting species, with very complex abdominal modifications in the male, from which sex the description is taken : — B. la'byrinthea n. sp. — Moderately stout, convex, polished, brijiht rufo-testaceous throughout; pubescence rather long, coarse and sparse. Head impunctate, with three large spongiose fovese, the surface between the occi- pital fovefe and the eye feebly impressed ; eyes large, prominent, not quite attaining the base; antennae long and slender, all the joints elongate, except eight to ten which increase gradnalfy in size, obtrapezoidal in form, the eighth wider than long. P)-otIiorax very feebly and sparsely punctulate, slightly wider than long, but little wider than the head, the median fovea much smaller, more basal and deeper than the lateral, very deeply impressed, with a small spongiose area at the bottom. Elytra convex, finely, very sparsely punctulate, nearly as long as wide, almost twice as wide as the prothorax. Abdomen shorter than the elytra, with two larg« exposed dorsal segments, the first three times as wide as long, with two equally trisecting parallel and very pronounced tumid ridges, gradually increasing in size and prominence from base to apex and each bearing upon its crest one of the fine abdominal carinje, the latter eutire and separated by one-third the width, just perceptibly diver- gent ; apex abruptly perpendicular throughout the width, with a porrect setose process at lateral third far below the crest of the corresponding dorsal ridge, and also a small rounded porrect median lobe, bearing at apex two 478 Coleopterological Notices, V. small approximate and mutually everted reflexed and corneous laminje. kjecond secrraent slightly longer than the first, trapezoidal, one-half wider tlian long, the apex broadly sinuate with obtusely rounded angles and two- thirds as wide as the base, the surface not at all foveate at base, broadly, strongly impressed laterally especially toward base, the median parts obtusely but strongly elevated throughout the length, becoming broadly and gradually impressed toward apex thus forming the apical sinuation. The second seg- ment iinly slightly overreaches the third, which is inferior and but slightly modified. Metasternum broadly impressed. Length 1.8 mm. ; width 0.8 mm. New York. Mr. W. Jiilich. It is almost impossible to describe the extremely complicated modifications on the transverse vertical wall which forms the ape.x of the first segment. This species is allied to wtermedia, differing in the parallel and not oblique elevations of the first segment, the shorter broader and non-foveate second segment and in many other details. The species described by me under the name infinita (Bull. Cal. Acad. Sci., II, p. 184), is an altogether different thing from hel- fragH, with which it has been considered synonymous. The dif- ferences can be noted in the following statement drawn from the females of the two species, the original types of each : — Distinctly stouter in form ; head much smaller and narrower than the protho- rax, the eyes moderate in size, the tempora strongly convergent behind them to the neck ; prothorax slightly transverse ; subapical dorsal seg- ments of the abdomen inferior and strongly infiexed Iielfragei Head very large, fully as wide as the prothorax, the eyes extremely large and prominent, extending to the base ; tempora obsolete ; prothorax much shorter and more transverse ; abdominal segments feebly infiexed near the apex iufinita The drawing of belfragei given by Brendel (Bull. Univ. Iowa, PI. IX, f. 57) seems to have been taken from a specimen of infi- nita, and the male sexual modifications are probably of the same general type in both. There can be no doubt that the original series from which ivfiiiita was described, was composed entirely of females, and the differences signaled in the remarks beneath the de- scription, were in some measure due to unconscious injagination while laboring under the impression that there ought at any rate to be one male among fourteen specimens.' ' A lifetime might well be occupied in simply training the brain to see things as they really are and as revealed to us by the visual images on tlie retina, and the nearest we can ever get to truth is an approximation, depend- Coleopterological Notices, V. 479 Under the name dentata Say, two remotely isolated species have been confused, one having the body larger, pale brown throughout, Avith the first dorsal strongly conical and prominent at apex in the male, and the other smaller, black with paler elytra, the first ven- tral not prominent at apex. Neither of these species corresponds with Say's description, which states that the elytra are " half the length of the tergum ;" body blackish, with paler elytra, the " ter- gum simple," and the length one-twentieth of an inch. No species of Bryaxis known to me has the elyti'a so short in comparison with the tergum. No mention is made of any sexual modification, but there is added " Var. a. Reddish-brown." In view of the name given by Say, and of the fact that he had before him reddish- brown specimens, I think the best way out of this dilemma is to apply the name dentata Say, to the species for which it is most appropriate, viz.: the larger brown species with strongly conical first dorsal, and to designate the smaller blackish species by an- other name, as suggested in the following description drawn from the male : — B. intricata n. sp. — Moderately stout, convex, polished and subimpnnc- tate throughont, black : antennae piceous ; elytra and legs rufo-ferrugiiious ; pubescence short, subrecumbent, sparse. Head smaller and just visibly nar- rower than the prothorax, deeply trifoveate ; eyes moderate, bnt slightly more than twice as long as the tempora, the latter strongly convergent ; antennae rather short and stout, as long as the head and prothorax, club gradual, robust, fourth joint scarcely longer than wide. Prothorax but slightly wider than long, widest at the middle, with three extremely large equal circular and spongiose fovese, the median much nearer the base than the lateral. Elytra but slightly wider than long, quite distinctly less than twice as wide as the prothorax, the sides moderately divergent, broadly arcuate; humeri distinct. Abdomen, viewed laterally, much shorter than the elytra. First dorsal nearly two and one-half times as wide as its median length, broadly, parabolically rounded beliind throughout the width, with two fine short basal carinse which are parallel and distant by about one-lialf tbe discal width, the surface evenly, feebly convex throughout ; apex not deflexed but with the surface very slightly more transversely arched in median sixth or seventh, the edge of the arch broadly, very feebly and simply emarginate. Second segment scarcely one- half as long as the first, excavated in anterior two-thirds and median third, the excavation with two distant anteriorly divergent ridges which are densely clothed with short erect setae ; at the apical margin, under the apex of the ing not only upon the amount and quality of this training, but upon the relative freedom of the brain from temporary bias and prepossession. 480 Coleopterological Notices, V. first segment, there is a thin transverse erect lamina, gradually curved back- ward, the apex appearing immediately under the middle of the emarginatioii of the first segment ; from the posterior base of the erect lamina there projects obliquely backward a small straight narrow ligula. Remainder of abdomen simple. Legs rather slender, the posterior tibiae bent, the intermediate shorter and thicker. Length 1.25 mm. ; width 0.65 mm. New York. The abdominal characters of this species are more nearl}^ homo- logous with those of the texana group than with abdominalis or intermedia. It is one of the smallest species of the genus. In the desert regions extending from western Texas to southern California there are species of a peculiar type, pale ferruginous in color and having the first dorsal segment in the male very long, in fact constituting the entire abdomen when viewed from above, with the apex deflexed and more or less broadly sinuate in the middle. I have before me three species, all represented by the male alone, the female being apparently very rare ; they may be distinguished as follows : — Elytra but slightly wider than long, the suture wery much longer than the first ventral segment, with the sides less divergent and more arcuate. First dorsal segment with the sides subparallel, at the apex much wider than the elytra at the humeri ; second nearly twice as long as the third, the apex broadly, feebly sinuate in middle fourth, the surface feebly and approximately biimpressed in median fourth and anteiior half; second and third segments strongly punctate throughout; third and fourth sub- equal in length ; last dorsal broader, even, entire and very broadly rounded at apex. Length 1.5 mm. ; width 0.7 mm. Southern California. loripes n. sp. First dorsal strongly narrowed from base to apex, at the latter point scarcely wider than the elytra at the humeri ; second transverse at apex, scarcely at all longer than the third, feebly, obliquely impressed on the disk at each side of median third in anterior half, and also along the apical margin, the central portion between the impressions very feebly elevated, strongly punctate and setose ; tliird segment one-half longer than the fourth, with the apex broadly and very feebly sinuate in the middle ; last dorsal with a short beveled spongiose apical region, the anterior margin of which is abruptly limited and broadly anteriorly arcuate throughout the width ; body otherwise nearly similar in form and size to Zonpes though rather less stout texaiia Csy. Elytra short and transverse, the sides strongly divergent from the humeri and nearly straight ; suture but slightly longer than the first dorsal ; second dorsal scarcely more than one-half as long as the third, deeply emarginate in the middle of its anterior margin under the apex of the first, the surface with a transverse elevated median tubercle occupying the entire segmental Coleopterological Notices, V. 481 length and limited at each side by a feeble oblique impression, the latter more distinct anteriorly; third segment nearly iwice as long as the fourth, the former scarcely perceptibly sinuate at the middle of the apex ; punc- tures throughout line and sparse ; body smaller and less stout. arizoiiae Csy. The lengths of the segments are measured along the middle line. 0( foveata Lee., I have before me several specimens taken in Utah by Mr. Soltau, and perfectly agreeing with the female type from Yuma, California. The male has the following abdominal characters : — First dorsal a little more than twice as wide as long, with two feebly diver- gent basal carinse more than one third as long as the segment (very much shorter and feebler in the female), separated by one-half of the discal width ; apical margin broadly, feebly arcuate ; surface even but, near the apex at the middle, very slightly more transversely arched, the edge feebly emargi- nate in median eighth to tenth, the notch rounded, much deeper when viewed obliquely from behind ; second segment less than one-half as long as the first, broadly, deeply impressed in median half and anterior two-thirds, the im- pressed area transverse, with a posteriorly arcuate rounded hind margin, the bottom smooth polished and nearly even throughout, the middle of the ante- rior margin narrowly reflexed and curved upward and backward far under the arched portion of the apex of the first segment. Foveala belongs to the same group as intricala and resembles it in form and size, but is dark red-brown in color with paler elytra. There are no marked sexual differences in the antenna, and the ori- ginal type as described (Ann. Lye. N. H., Y, p. 215) appears to be a female. The description of the male sexual characters more re- cently published by LeConte (Tr. Am. Ent. Soc, YIII, p. 181) is somewhat misleading. The sexual characters of some previously published species now united as varieties of hsemalica, indicate that they are really en- titled to full specific recognition. This is especially the case with i:)erforata Aubd. It is desirable therefore that perforata Brend. should receive another designation, and I would suggest the name terebrata. This species belongs to the same group as foveata and intricala. REICHEiVBACHIA Leach. Our eastern species of this genus are somewhat difficult to identify owing to the absence of strongly marked sexual characters ; a few of them however, such as scabra, yemmi/er and puncticollis, are 482 Coleopferological Notices, V. quite isolated otherwise. The typical riihicunda is rather stout, with subimpunctate polished integuments, elytra distinctly shorter than wide, abdominal carinse rather long, divergent and separated by between one-fifth and one-sixth of the entire width, the pubescence long, bristling and coarse, and the male sexual characters feeble, the last ventral flattened and the last dorsal with a very small apical sinuation, two or three times as wide as deep, with its lateral limits not abruptly defined. In gracilicornis the body is equally stout and the carinje similar, but the vestiture is a little shorter and coarser, and the last dorsal has at apex a small semi-circular nick, abruptly limited by acute angles, the last ventral just visibly im- pressed. Gracilis is narrower and still more hirsute than rvbicioida, though similarly carinate, and has the last ventral deeply impressed, the last dorsal being broadly sinuate at apex, the sinuation about twice as wide as in rubicund a or gracilicornis but nearly similar in shape to that of the former Allantica also has the vestiture long, erect and hirsute, but the abdominal carinae are much closer, nearly as in diver gens. On the other hand divergens, facilis, crihricollis, congener, furtiva and inepta, have the pubescence decidedly shorter and more recumbent, and the abdominal carina generally less distant though in different degrees ; in inepta they are relatively a little more distant than in rubicunda, this species as well as congener being distinguished also by its minute size. In congener, furtiva and cribricollis — if I have correctly identified this species — the carina are a little less distant than in rubicunda but more distant than in facilis and divergens, where they are separated at base by a distance not greater than that of the sutural stride at the middle of the elytra. Cribricollis has an unusually long prothorax. Divergens was recently redescribed by Brendel under the name canadensis, specimens sent to me by the author agreeing completely with the types in the LeConle cabinet ; the pronotum in these types is sparsely and coarsely but feebly punctate, more distinctly so ante- riorly and not impunctate as stated in the original description. The species is easily recognizable by its short transverse and roughly scabro-punctate elytra. Facilis is a widely different species with longer, subimpunctate elytra and still more minute appressed pu- bescence; it differs also in antennal structure and male sexual characters, and was possibly described by Brendel under the name divergens Lee. Coleopterological Notices, V. 483 Inopia Csy., is the same as Iifo7-aHs Brendel ; this is one of the species confounded with puncticollis by LeConte. I agree with Dr. Brendel that the true puncticollis is, when mature, dark with reddish elytra, the pronotum being- very strongly and closely punc- tate especially in the male. It is abundant in the swamps near New York and Washington. The prothorax in inopia is feebly punctate, especially anteriorly, and not impunctate, as originally stated. The few remaining specimens of nevadensis in my cabinet are females, and it is quite certain that the male has never been taken. The head is without a true frontal fovea, but has a short distinct transverse linear and pubescent impression between the antenna;; otherwise it is so similar to the female of fandata and deformata that I have no hesitation in putting it near them for the present ; in the females of those species there is no trace of the transver&e frontal impression.' The species described by me as franciscana is identical with comjyar as surmised by Dr. Brendel. The name piolita given by Brendel to one of our species is preoccupied by King for an Aus- tralian species — possibly belonging to the genus Rybaxis however. Minuta Brend. (Proc. Ent. Soc, Phila., 1865, p. 30) cannot be identified, and is not referred to b}^ Dr. Brendel in his recent mono- graph. The following species seem to have been overlooked: — R. flirtiTa n. sp. — Stont, convex, polished, black or piceons-blaek with paler and more rufous elytra ; legs and antennae pale ferruginous ; integu- ments sparsely and not distinctly punctulate ; pubescence very short but stitf, almost recumbent, rather sparse. Hmd much nariower but only slightly sliorter than the prothorax, deeply trifoveate ; eyes moderate, vary convex and prominent, at very nearly their own length from the base ; antennae slender, one-half as long as the body, the club very gradual, joints elongate, fifth twice as long as wide, eighth as long as wide. Prothorax nearly one-half wider than long, widest and evenly, strongly rounded at about the middle ; apex scarcely two-thirds as wide as the base; median fovea small but distinct, lateral large, visible from above. Elytra large, nearly twice as long as the prothorax and fully twice as wide, not quite as long as wide; humeri narrow at base but distinct ; discal stria evanescent at apical fifth. Abdomen, from above, much shorter than the elytra, equally wide, the first dorsal nearly 1 The small circular fovea in the transverse frontal impression, mentioned in the original description ot nevadensis, seems to be the result of slight injury to the type, which was the only specimen examined in this connection. 484 Coleopterological Notices, V. three times as wide as long, with two very short basal strise which are strongly divergent and distant at base by one-sixtli of tlie discal width. Legs rather long and slender. Length 1,3 mm. ; width 0.75 mm. Pennsylvania. A single pair, dififering only in the length of the abdominal carinse. The carinas appear to be variable in length as a general rule in this genus, but are less variable in direction and are quite constant in mutual distance asunder. The male t3'pe above de- scribed has the last ventral very large, very broadly and somewhat deeply impressed, the impression even ; last dorsal very broadly but distinctly sinuate at apex. This species belongs near rubiciinda and gracilicornis, but dif- fers greatly in its short subrecumbent pubescence and strongly marked male sexual characters of the last ventral, also in the very different form of the terminal notch of the last dorsal. It is also closely allied to facilis, having the same minute decumbent pubes- cence, but more distant abdominal carinas; it is intermediate be- tween 7-uhicunda eivA facilis in many respects. R. iuepta n. sp. — Rather stout, convex, polished, subimpunctate, dark red-brown, the elytra brighter rufous ; pubescence moderately abundant, rather short, stifl', inclined. Head much smaller than the prothorax, with three spongiose foveje, the two posterior smaller than the subapical ; eyes moderate in size, well before the base ; antennae scarcely longer than the head an'd prothorax, rather slender, the club stout, fifth joint nearly one-half longer tlian wide, the eighth slightly transverse. Prothorax two-fifths wider than long, rounded on the sides and widest just before the middle; lateral foveas distinct, intermediate subobsolete, consisting of an oval impression so feeble as to be discernible only in certain lights, near the posterior margin of which there is an excessively minute puncture, only distinct under rather high power. Elytra transverse, one-half wider than long, one-half longer than the prothorax and nearly twice as wide ; sides strongly divergent ; discal stria extending nearly to apical sixth. Abdomen, from above, but slightly sliorter than the elytra and equally wide, the first segment nearly three times as wide as long, with two straight divergent carinaj in basal third, separated by about one-fourth of the discal width. Length 1.0 mm. ; width 0.65 mm. New Jersey. The single specimen before me is a female. The species belongs near rubicunda, differing obviously however in its very minute size, shorter, coarser vestiture and nearly obsolete subbasal fovea of the pronotum. It is also allied to farlixm but has the pubes- cence longer and coarser, and the abdominal carinas more distant ; the size, also, is much smaller. Coleopterological Notices, V. 485 R. demissa n. sp. — Moderately stout, convex, polished, dark brown, the elytra paler ; integuments subimpunctate ; pubescence short, coarse, strongly inclined, not very dense but distinct. Head scarcely shorter but much nar- rower than the prothorax, excepting the eyes subquadrate ; fovese deep, the posterior widely distant, subapical larger, in the interantennal depression ; eyes rather small, prominent ; tempora to the neck a little longer than the eye, strongly rounded ; antennae about as long as the head and prothorax, normal, the club gradual but heavy, the eleventh joint nearly as long as the preceding four. Prothorax transverse, one-half wider than long, widest at the middle where the sides are rather strongly rounded ; apex one-half as wide as tlie disk and two-thirds as wide as the base; lateral fovetilis In subtilis, which is represented by the unique female type only, the circular spongiose frontal fovea is not at all smaller than the others, but if anything a little larger ; it is however unusually apical, being situated on the anterior declivity and so may appear very slightly smaller or, more properly, elliptical, from a vertical point of view ; in a posteriorly oblique line of sight it may of course soon be made to vanish. Subtilis may be very readily separated from wickhami by the larger eyes, position of the frontal fovea, and much smaller basal joint of the antennae. In all of these species the color is pale rufo-ferruginous through- out, the surface very convex, the elytra long and ample, the basal carinaa of the abdomen short, subparallel and separated by one- third of the total width, except in tumida, where they are sensibly more distant. In tumida the head of the male is very remarkable, the upper surface being nearly flat with two large distant fovese at basal third, produced anteriorly beyond the antennas in a short trapezoid, the apex abruptly transversely truncate, feebly bisinuate and as wide as one-half the interfoveal distance ; at the narrow truncate apex the surface becomes abruptly vertical or even gradu- ally feebly inflexed to the labrum, the vertical part one-half as long as the upper horizontal part; the frontal fovea is replaced by a Coleojjterological Notices, V. 48T transversely fusiform spongiose line at the angle separating the vertical from the upper portion, and is invisible from above. The large sixth antennal joint is deeply excavated almost throughout its extent beneath, the excavation clothed with erect subsquamiform setJB. In the female the bead, as in comj)Jecteni>. 9, is simple, the three circular fovese forming a large equilateral triangle. These four species, while agreeing generally among themselves, are all very isolated, and the discovery of the male of i^iibtilis and com- plectens may be awaited with interest. In conformity with a gen- eral rule in the present genus, the female is smaller than the male, and has shorter elytra. Bythinini. BYTHIXUS Leach. The presence or absence of small raised knobs on the under sur- face of the second palpal joint is not a generic character in this group of species, as these minute tuberosities may be traced more or less readily in nearly every representative ; in our own cari- natiis they are extremely feeble, but in tychoides Brend. {Tychus hythinioides Br. olim) they are very distinct. In fact Machdtrodes tychoides agrees almost exactly with an example of Bythinus italicus in my cabinet, and I cannot perceive that there is even a subgeneric difference in any direction. Pselaptrichus is extremely closely allied to Bythinus, differing onl}^ in the longer abdomen and more narrowed and produced frontal tubercle, but in view of the variation exhibited in the latter respect by the numerous species of Bythinus, this cannot be con- sidered of very decisive value. The more elongate apparent first dorsal segment is the only really important differential character possessed by Pselaptrichus tuherculipalpvs Brend., but there can be but little doubt that this alone is sufficient to establish its validity. Bythinus is extremel}^ poorl}^ represented in America, but in Europe appears to be the most important element of the family. CYLIXDRARCTUS ScLaufiiss. The more elongate third palpal joint, mentioned by Scbaufuss and Raffray as a distinguishing feature of this genus, is, it seems 488 Coleopterological Notices, V. to me, one of the least decisive of the differential characters, for there is no species in which this joint becomes fully as long as the fourth, and there are several species of true T\^chus which have the third and fourth joints quite similar to the usual form in Cylin- drarctus ; the second palpal joint is however more abruptly and stronn:ly clavate and with a more slender peduncle in Tychus. Cylindrarctus is very closely allied to Tychus, but differs in the more elongate and somewhat more depressed form of the body, the more elongate antennae, in having the vertexal fovess on the sloping sides near the eye — and not remote from the eye and visible from above as in Tychus, — and especially in the much less distant poste- rior COXc^. In Tychus the basal joint of the antennae is usually simple, while in Cylindrarctus it is generally modified in some peculiar n)anner ; in the former the male may or may not have the anterior trochanters spiculate, and the last ventral is seldom foveate as in Cylindrarctus, but, — in T. minor for example, — has the surface broadly concave, the apex gradually deflexed to the level of the flat ventral pygidium. In Tychus the second joint of the posterior tarsi is subequal to or longer than the third, while in the present genus the second joint is shorter than the third. Duly considering all of these differences, I am therefore inclined to agree with Mr. Raffray in considering Cylindrarctus a genus distinct from T3"chus. The known species may be thus distinguished: — Third palpal joint angnlate internally near the base ; sixth ventral of the male with a deep indefinitely limited impression, which is acutely angulate anteriorly at the anterior margin, the apical margin deflexed and with an abruptly limited semi-circular notch longipalpis Third palpal joint more or less broadly rounded within behind the middle, not at all angulate. Basal joint of the antenn?e obliquely carinate externally at base ; sixth ven- tral of the male with a deep triangular excavation, the apical angle of which is at the anterior margin as in lorigipalpis; pubescence rather shorter than usual, very coarse ainericaiillS Basal joint not described; pubescence shorter than in comes and crinifer : sixth ventral with a deep circular fovea ; body larger, 1.9 mm. in length. ludovicianus Basal joint obliquely flattened in a large external area at base ; sixth ven- tral of the male with a small transversely lunate impression just before the ventral pygidium COines Basal joint compressed beneath, the lower margin strongly arcuate; females only known ; vestiture very long and bristling crinifer Coleopterological Notices, V. 489 Of americanus Schauf. I have before me a single male from Illi- nois; it is blackish in color throughout and unusually narrow and elongate ; the third palpal joint is evidently shorter than the fourth. C. comes n. sp. — Moderately narrow and convex, polished, sublmpunc- tate, dark rufo-testaceous, the abdomen piceous ; pubescence sparse but very long, erect, the hairs of the elytra about one-third as long as the prothorax. Head longer than wide, as long as the prothorax but much narrower; eyes large, prominent, nearly at the base ; antennal tubercles convex ; vertexal fovefe deep, perforate, on the sloping sides near the eye ; subfrontal spicule midway between fovea and tubercle, small ; palpi long, third and fourth joints beset with long erect setae, the former much the shorter ; antennae one- half as long as the body, the club not quite as long as the funicle, first joint stout, longer than wide, mth a large oval area at base which is flattened and well defined above and beneath, one to three decreasing feebly in thickness, tliree to seven longer than wide, eighth wider than long, ninth and tenth abruptly much wider, trapezoidal, eleventh as long as the preceding three. Prothorax convex, nearly as long as wide, widest and strongly I'ounded at the middle ; sides thence strongly convergent to the apex which is three-fifths as wide as the base ; near the basal margin a few small feeble impressions and on each side before the base a larger fovea. Elytra about as long as wide, as long as the head and prothorax, nearly twice as wide as the latter; humeri evident, widely exposed at base, the humeral width fully four-fifths of the subapical ; impressed discal line extending to the middle. Abdomen scarcely as wide as the elytra and much shorter, the first visible dorsal distinctly longer than the second ; border moderate. Length 1.6 mm. ; width 0.7 mm. Florida. The male, from which the description is taken, has a short stout erect spine at the base of the anterior and posterior trochanters, the intermediate simple. The metasternum is tumid, the tumidity bear- ing two rather distant short erect and acute spines, arranged trans- versely just before the middle of the metasternal length, the poste- rior declivity broadly feebly and longitudinally impressed to the intercoxal sinuation. First and second ventrals not impressed, the sixth with a small deep lunate impression at apex, not extending beyond the middle of the segment and bordering the small flat ven- tral pygidium. This species differs from ludovicianus Brend. in its smaller size and longer pubescence. C crinifer n. sp. — Rather convex, polished, dark rufo-testaceous through- out, often paler fi-om immaturity ; integuments subimpunctate ; pubescence long, sparse, erect and bristling, the hairs of the elytra nearly one-third as long as the prothorax. Head scarcely as long as the prothorax and about Annals N. Y. Acad. Sci., VII, Nov. 1893.— 32 490 Coleopterological Notices, V. three-fourths as wide, convex ; eyes moderate, near the base ; supra-ocular foveae at some distance from the eye : spicules very small ; antennae one-half as long as the body, the basal joint stout, compressed beneath, two to five longer than wide, six and seven quadrate, eighth wider than long, club large, abrupt ; palpi long but stout, the last two joints pubescent with erect, minutely capitulate setae and smaller subrecumbent hairs. Prothorax one-fourth wider than long, widest at the middle where the sides are rather broadly rounded, strongly convergent and sinuate toward the apex, which is two-thirds as wide as the base ; subbasal fovea at each side rather large, the surface before it somewhat broadly flattened. Elytra not quite as long as wide, scarcely as long as the head and prothorax ; sides broadly, evenly arcuate throughout; humeri angulate and distinctly exposed, the humeral width fully three-fourths of the subapical ; discal impression feeble, traceable to the middle. Abdomen rather narrower and much shorter than the elytra. Length 1.5-1.6 mm.; width 0.65-0.7 mm. Indiana ; Iowa. The two type specimens are females, which leads me to think that the modifications of the first antennal joint in this genus may possi- bly be to some extent asexual. TYCHUS Leach. In both Tychus and Cylindrarctus the sexual characters are nearly .as in Arthmius, the male having a small flat horizontal pygidium behind the last ventral segment ; in the female the pygidium is wanting, and the last ventral is more or less acutely produced in the middle at apex. In these genera the first antennal joint is attached to the under side of the frontal tubercles as in Pselaphus, and the antennal cavities are very large and extremely deep, so that they meet internally, being separated — in an oval area — only by a thin transparent membrane. In both genera the upper surface of the head has a small nude puncture, more or less near the anterior part of the eye, and, between this and the frontal tubercles on each side, a small erect spicule which is a very constant peculiarity throughout. The antennal tubercles are large, approximate, and separated by a short longitudinal canal. Our species are comparatively few in number, and none have yet been observed possessing sexual modifications of the antennae ; they are minute, closely allied among themselves, and may be distin- guished by the following characters: — Coleopterological Notices, V. 491 Species of the Atlantic Regions. Dark brownish-rufous in color ; fovefe of the head extremely minute, perfo- rate, the subfrontal spicules very feeble (^testaceus \\ Csy.) minor Black, sometimes with slightly paler elytra ; much smaller species, the ver- texal fovese larger, more impressed, the spicules large and conspicuous. Subfrontal spicules midway between the tubercles and vertexal fovese. spiculifer Subfrontal spicules very near the fovese, distant fi'om the tubercles. Terticalis Si>ecies of the Rocky Mountains. Body small, brown, coarsely, not densely pubescent, impunctate ; eyes rudi- mentary. Length 1.4 mm uiicroplitbalmus Species of the Pacific Coast. AntennPB normal, the club composed of three larger joints, the ninth abruptly much wider than the eighth ; anterior trochanters generally not sexually modified. Pubescence dual, composed of very long erect hairs with others much shorter and more decumbent pilberullIS Pubescence simple or nearly so, shorter and much less conspicuous. Elytra larger, the humeri broadly exposed at base, rounded (bipuncticeps Csy.) cognattis Elytra smaller, more oblique at the sides to the base, the humeral angles obsolete sonouiae Antennse with a very stout club which is composed almost entirely of the last two joints, the ninth but slightly wider than the eighth ; body very small, narrow, blackish, with the elytra red clouded with black toward base ; pubescence rather long; anterior trochanters strongly spiculate at base in the male tenellllS In cognatus the sixth ventral of the male is feebly subimpressed, the apex with a broad feeble cuspiform emargination ; in tenellus the sixth ventral is scarcely impressed, the apex with a triangular emargination ; in both, the male pygidium is very small. T. spiculifer n. sp. — Minute, black, the elytra more rufous ; legs and antennae pale ; integuments polished, subimpunctate ; pubescence sparse, long and coarse. Head distinctly narrower than the prothorax and about as long ; eyes situated at nearly their own length from the base ; vertexal fovefe rather large, distinct from above, the subfrontal spicules distinct, midway between the fovese and the large, somewhat flattened antennal tubercles ; antennae stout, fully one-half as long as the body, the club large, fully as long as the seven preceding joints, one to three decreasing in thickness, the third obconi- cal, as long as wide, three to eight equal in thickness, four to eight transverse, ninth and tenth much wider, strongly transverse, eleventh large, almost ais long as the preceding four together ; maxillary palpi moderate in develop- 492 Coleopterological Notices, V. ment, the third joint broadly rounded within. Prothorax a little wider than long, widest and rather broadly rounded at the sides ; apex three-fourths as wide as the base, lateral subbasal fovese large. Elytra not as long as wide, one-half longer than the prothorax and nearly twice as wide ; sides broadly arcuate behind, oblique ; humeri scarcely at all exposed at base ; humeral width barely more than two-thirds of the subapical ; discal stria extending rather behind the middle. Abdomen a little shorter than tlie elytra and nearly as wide, the first dorsal slightly longer than the second. Leys moderate. Length 1.2 mm. ; width 0.45 mm. Pennsylvania. The single type appears to be a female and is about equal in length to tenellus but broader. Another female from Illinois is a little larger, with slightly longer elytra, but I cannot perceive that it is specifically distinct. T. Terticalis n. sp. — Minute, piceous-black and polished throughout, the legs and antennse pale, subimpunctate except the elytra which are sparsely puuctulate ; pubescence long, coarse and sparse. Head across the eyes fully as wide as long, narrower than the prothorax ; eyes at about one-half their length from the base, large, prominent ; antennal tubercles large, convex, vertexal fovese large, visible from above, the spicules large and very near the fovese, distant from the tubercles ; antennae rather stout, one-half as long as the body, the club not quite as long as the funicle, first three joints decreasing, third rather longer than wide, four to eight slightly transverse, the fifth but little wider than long, ninth to eleventh abruptly wider, increasing in width ; third palpal joint broad, triangular. Prothorax distinctly wider than long, •widest and rounded at the middle, the apex three-fourths as wide as the base ; lateral subbasal fovese deep. Elytra not quite as long as wide, two-thirds longer than the prothorax and distinctly less than twice as wide ; sides oblique, rounded behind ; humeri but slightly exposed at base, the humeral width three-fourths of the subapical ; discal stria extending rather behind the middle. Abdomen a little narrower and much shorter than the elytra, the first dorsal much longer than the second. Length 1.2 mm. ; width 0.45 mni. District of Columbia. The type is a female and resembles spicwhyer; it may be readily distinguished however by the position of the subfrontal spicules, which are very near the fovete, also by the larger and more basal eyes, more transverse prothorax and some other characters. Both of these species differ from minor in their much smaller size, blacker coloration, much larger vertexal fovese, and larger sub- frontal spicules. Goleopterological Notices, V. 493 VAL,»A. n. gen. This remarkably distinct and interesting genus is evidently to be associated with Cylindrarctus and Tychus, but also evinces some affinity with Arthmius and Pselaphus, as is likewise the case with the genera mentioned. In Cylindrarctus the tarsal claw has a dis- tinct basal unguiform appendage, but here there are two long slender and well-developed but unequal claws as in Batrisus. In Valda the body is nearly as in Cylindrarctus, the first ventral sejrment very short but visible from side to side; the second and third ventrals — first and second visible dorsals — are long, but some- what exceptionally, the former is distinctly shorter than the latter above and beneath. The trochanters are normally bythinoid, the anterior coxds long and conical, the intermediate narrowly sepa- rated by the sternal processes and the posterior approximate, nar- rowly but quite perceptibly separated. Mesosternum long, finely but strongly bicarinate, the metasternum large. Maxillary palpi long and greatly developed, the first joint minute; second long flattened and contorted, the concave side smooth polished and glabrous, the convex covered with erect setae ; third small, trian- gular, partially setose ; fourth large stout oval and subglobose, bristling throughout with short stiff capitulate setae, and without distinct terminal process. The head has a broad frontal tubercle partly divided by a short canal, the antennae long, inserted as in Tychus and Pselaphus; eyes large and prominent. Prothorax with two lateral subbasal foveas connected by a rough and uneven transverse fold of the sur- face, and with five basal impressions separated by short ridges. Elytra large, each bifoveate at base and with a partial discal and entire sutural stria, the hairs longer stiffer and porrect near the hind margin as in Pselaphus. Abdomen margined, the first dorsal strongly and the second feebly bicarinate. Sexual characters as in Arthmius, the male having a small flat horizontal pygidium behind the sixth ventral segment. Legs and tarsi slender, the second joint of the hind tarsi much shorter than the third. The single species may be described as follows from the male: — V. frontalis n. sp.— Pale brownish-flavate throughout, polished, sub- impunctate, the elytra slightly punctulate ; pubescence rather short and sparse but very coarse. Head much shorter and narrower than the prothorax, scarcely as long as the width across the eyes, the neck strongly constricted ; frontal 494 Goleopterological Notices, V. tubercles convex, broad ; surface behind them abruptly deeply and trans- versely excavated from side to side, the excavation trisected by two feeble carinas at the bottom, its posterior margin acute and feebly bilobed ; in the middle on ihe upper surface immediately behind each lobe tiiere is a large fovea, the two approximate and each bearing a tuft of long erect set.-e ; occiput and vertex without other impressions, even, very strongly convex, arched and elevated above the eyes, the latter prominent and convex, near the base ; tempora with a dense tuft of coarse setae ; under surface strongly but broadly convex behind the oral opening ; antennae not quite one-half as long as the body, the first joint a little longer and thicker, two to eight subquadrate, nine and ten but little larger, nearly as long as wide, eleventli large, thick, oval, obtusely pointed. Prothm-ax nearly as long as wide, hexagonal, widest a little before the middle ; apex three-fourths as wide as the base. Elijtra nearly as long as wide, three-fourths longer than the prothorax and nearly twice as wide ; sides feebly arcuate behind ; humeri strong, broadly exposed at base ; discal stria extending to the middle. Abdomen a little narrower tlian the elytra but nearly as long ; border as in Cylindrarctus ; carinte of tlie first and second dorsals subparallel, separated by a little less than one-third tlie discal width, tlie first two-thirds, the second one-fourth as long as the respective segment. Metasternum large but not tumid, perfectly even tliroughout. Length 1.8 mm. ; width 0.7 mm. California (Siskiyou Co.). The male sexual modifications of the under surface are very feeble, consisting only of a small and very feeble impression of the sixth ventral, with a narrow feeble sinuation of its apex, the sinua- tion receiving the very minute transversely oval pygidium on the same plane. In the female the subfrontal excavation is doubtless wanting, but it would be interesting to note the position of the vertexal fovese, as these seem to be peculiarly modified and con- nected in some way with the excavation in the male, if, indeed, the two foveas mentioned above are really the two ordinary ceph- alic foveas of the family. PSELAPHINT. PSELAPHU§ Herbst. In this singular genus there are two characters which, though probably not peculiar to it, are nevertheless strikingly developed. The first relates to the position of the two large spongiose fove^e of the head, which, in most genera possessing them, are situated on a comparatively flat surface and are distinct from a vertical point of view. In the present genus the upper surface becoines abruptly declivous far beliind the middle, the declivous wall being almost Coleopterological Notices, V. 495 semi-circnlar in plan and forming the posterior limit of the long rostriform and ante-ocular part of the head, and also of its longi- tudinal groove ; the fovese are situated on the oblique side-walls of the declivity, and their large cavities extending under the surface horizontally, thin out the chitioous envelope above them, giving rise to the two large pale spots between the eyes. The second refers to the peculiar masses of vestiture of the under surface, espe- cially of the head and sterna; these masses are difficult to analyze structurally, but appear to be formed of agglutinated scales of a remarkably broad and thick form and gelatino-membranous tex- ture; this kind of vestiture has been alluded to as "sugary" by Dr. Sharp, an appropriate term as far as appearance is concerned. It is unnecessary at present to allude to the almost unique form of the body which isolates Pselaphus from all of our other genera. The North American representatives do not appear to be nume- rous and the four in my cabinet may be readily separated as fol- lows : — Upper surface of the head bordering the frontal groove roughly punctate ; club of the fourth palpal joint small, constituting one-third of the total length ericlisoni Upper surface smooth, polished and impunctate throughout ; club much longer. Palpal club gradually formed, smooth, bearing fine erect setse only. The club slender, occupying one-lialf of the total length. ..loilgicIaVMS The club very long, constituting fully two-thirds of the total length, the peduncle more abruptly bent f listifer Palpal club with semi-erect curved asperities in addition to the erect set;e, somewhat abruptly formed and constituting about one-half the entire length Iiellax p. flistifer n. sp. — Moderately slender and convex, polished, subimpunc- tate and dark rnfo-testaceous throughout, sul)glabrous. Head about as long and wide as the prothorax, the surface feebly reticulate anteriorly, feebly, sparsely punctate and setose behind, tlie frontal groove broad and deep, ex- tending to the foveae ; occipital groove extending thence midway to the base ; antennae fully two-thirds as long as the body, the basal joint scabrous, cylin- drical, as long as the next three, the latter decreasing feebly in size, seventh longer than the sixth or eighth, ninth thicker, longer than wide, narrower and rather longer than the tenth, eleventh large, obliquely oval, pointed, as long as the preceding three joints. Prolhorax a little longer than wide, oval, truncate at base and apex, the latter nearly equal ; sides strongly but broadly arcuate ; surface impunctate and strongly convex. Elytra about as long as wide, nearly two-thirds longer and two and one-half times as wide as the pro- thorax, the sides broadly, feebly arcuate ; humeri obsolete ; base one-third as 496 Coleopterological Notices, V. wide as the apex ; each with four even series of sliort stiff setse. Abdomen as wide as the elytra and about three-fourths as long, the border of the first segment one-fourth of the disoal width, the latter one-third greater than its median length. Legs moderate, the femora thick and subclavate, the tibiae strongly thickened toward apex ; second posterior tarsal joint compressed, much thicker than the third and equal to it in length. Length l.G mm. ; width 0.7 mm. New York. The single specimen is of undetermined sex. The fourth palpal joint is rather thick, about as long as the prothorax and has the clavate part thickly covered with long erect pale ashy hairs. P. bellax n. sp. — Rather slender and depressed, polished, suhimpunc- tate, nearly glabrous and dark rufo-testaceous throughout. Head rather longer than the prothorax and fully as wide, the upper surface sparsely setose, polished, not at all reticulate anteriorly, sparsely punctulate behind, esspecially at the posterior margins of the pale spots, these punctures bearing longer stiff setae recumbent over and beyond the spots ; frontal channel and occipital groove well developed ; antennse nearly two-thirds as long as the body, somewhat scabro-reticulate throughout, the cylindrical basal joint nearly as long as the next three, second almost as thick as the first, ninth longer and narrower than the tenth, eleventh stout, obliquely oval, as long as the pre- ceding two joints combined, less scabrous but with sparse asperate punctures. Prothorax suhcylindrical, widest at the middle ; sides broadly arcuate ; base and apex truncate and equal; surface very convex, impunctate. Elytra as long as wide, three-fourths longer than the prothorax and two and one-half times as wide ; humeri very oblique and obtuse; base one-third as wide as the apex ; each with four even series of erect distant setse. Abdomen as wide as the elytra and three fourths as long, of the usual structure ; border wide. Letjs moderate, more slender throughout than in fuatifer, the second posterior tarsal joint but slightly thicker and decidedly longer than the third. Length 1.4 mm. ; width 0.55 mm. Massachusetts ; Michigan. This species is very closely allied to the European heisei, but differs in its rather smaller size, and especially, narrower form, in the somewhat stouter and more abruptly formed palpal club, and in the longer antennal club, the three last joints of the antennie being together much shorter than the seven preceding in heisei, while in bellax the club is fully as long as the funicle. I obtained two specimens at Taunton in damp moss; the three specimens be- fore me are equal in size and almost similar in structure, the sexual characters being apparently very feeble. Coleopterological Notices, V. 497 Ctenistini. BIOTIJS Casey. Could Dr. Brendel have bad before him a representative of the European Chenniuiu, I am sure that he would not have united that remarkable genus with Atinus and Biotus in his recent monographic study of the Pselaphidge ; the differences are manifold and very im- portant ; they may be expressed as follows : — Middle coxae distinctly separated by the wide sternal processes ; sides of the clypeus conically and acutely prominent ; mentum transverse, longitudi- nally convex and coarsely setulose ; maxillary palpi with the last two joints large, distinct and covered with short recumbent squamiform setse. C'lienniiim Middle coxae contiguous, their cavities broadly confluent ; sides of the clypeus normal ; mentum much more deeply seated, flat and subglabrous ; max- illary palpi much smaller, with the last two joints apparently combined in one. Labial palpi invisible ; muzzle below the antennae greatly extended beyond the eyes ; antennae cylindrical, nearly as in Chenniura but with the second joint small ; posterior tibiae compressed throughout, rather nar- rower toward apex BiotllS Labial palpi robust and distinct ; muzzle not produced; antennae slender, normal, moniliform, gradually and strongly thickened toward apex ; posterior tibiae clavate at apex Atilllis In Biotus it is almost impossible to make out the true structure of the maxillary palpi without dissection. The entire organ is less than one-third as large as in Chennium, and all that can be clearly seen is a single oval truncate joint, which is robust, longer than wide, apparently flattened beneath and covered sparsely with minute recumbent hairs; there is quite certainly a small basal joint, and, apparently, a minute wart-like tubercle on the outer side of the second joint. In the two spefies of Atinus the palpus differs surprisingly in size and form. In monilicornis it is very minute, scarcely larger than in Biotus, the second joint stout, sublunate, with the oblique pointed apex apparently setulose, while in hrevicornis it is nearly twice as large, not lunate but somewhat spindle-form, gradually and finely produced beneath and bearing at apex a short appen- dage. In both of these species the organ is sparsely clothed with 498 Coleopterological Notices, V. long- fine erect and remote sette, differing greatly in this respect, as well as antennal structure, from Chennium and Biotus. In all of these genera the first ventral segment is short, but visible from side to side behind the coxae. ATIIVUS Horn. The two species of this genus may be readily distinguished by the following characters: — Eyes smaller, between one-third and one-fourtli as wide as the interocnlar surface ; antennje longer, the basal joint as long as tlie nest two, the ninth and tenth joints much larger than the eighth, subglobose and as long as wide monilicornis Eyes very large and prominent, fully one-half as wide as the interocnlar sur- face ; antennse shorter, the club apparently five-jointed, the seventh and eighth joints subequal in width and larger than the sixth, eighth to tenth similar in form, gradually increasing in size, seventh to tenth transversely oval, eleventh stout, conoidal, basal joint longer than the next two; size smaller lireTicomis The striking palpal divergences exhibited by these species have been referred to under the preceding genus. I recently took several specimens of monilicornis under a flat stone in the mountains of western North Carolina; they were in a colony of a small slender piceous-brovvn ant, having the antennal scape one-half longer than the head, with the funicle slender and non-capitate. A. torevicomis n. sp. — Stout, scarcely shining, ferruginous, rather densely clothed throughout with small narrow recumbent squamules. Head rather wider than long, strongly constricted behind the frontal tubercle ; eyes at the base, the tempora almost obsolete ; antennae but little more than one- half as long as tlie body, the basal joint cylindrical, twice as long as wide, with rugose sculpture. Prothorax two-thirds wider than long, distinctly wider than the head ; sides feebly divergent from the base to the middle, then more strongly convergent to the apex which is broadly truncate and three-fourths as wide as the base ; three pubescent fovese shallow, not extending beyond basal third. Elytra large, not quite as long as wide, fully twice as long and wide as the prothorax ; humeri broadly rounded, obtuse, feebly elevated, the humeral width nearly four-fifths of the subapical ; sutural stria deep, discal evanescent near apical fourth. Abdomen distinctly narrower than the elytra but nearly as long ; border strong ; surface even ; segments subequal in length. Legs rather stout ; posterior tibiae strongly swollen toward apex. Length 2.0 mm. ; width 0.9 mm. Goleopterological Notices, V. 499 Texas. I have not seen the ant with which this species lives, and am uncertain also of the sex of the unique individual. Sexual differ- ences appear to be very feeble in this particular group of genera. AIVITRA Ti. gen. Body short, compact, moderately convex. Head triangular, the antennal tubercle short, narrow, strangulated at the sides, not at all divided by a median depression and continuous with the surface behind it ; vertex with two very feeble subobsolete fovese separated by nearly one-third the total width, and also another larger behind the tubercle. Eyes large, nearly at the base, half divided by the .posterior canthus; sides of the head behind them transversely ex- cavated beneath ; sides between the eyes and the frontal constric- tion long convergent and perfectly straight. Maxillary pa]|)i mode- rate, slender, cylindrical, three-jointed, the first minute; second arcu- ate, gradually increasing in thickness from base to apex; third shorter, cylindrical, with an internal and external seta at apex. Labial palpi slender, the terminal seta very long. Antennae long, cylindrical, with an elongate terminal joint ; club long, very feeble, three jointed. Prothorax sinuate at apex above, with a broad lon- gitudinal discal depression from the apex to basal fourth, where there is a pronounced obtusely elevated median tubercle before the basal margin. Elytra ample, with a fine sutural, and partial discal, stria, each coarsely bifoveate at base. Abdomen with the first four dorsals subequal, strongly margined ; first ventral short but visible from side to side ; stomata of last dorsal distinct at the lateral angles. Prosternum deeply, broadly emarginate at apex, prominent later- ally, very short before the coxae which are long and conical. Meso- sternum short, smooth. Metasternum moderate. Intermediate coxae very narrowly, the posterior rather widely, separated; inter- mediate trochanters long, the insertion terminal; anterior and pos- terior shorter. Legs rather slender ; second joint of the tarsi shorter than the third ; ungues well developed, stout, subequal. This remarkable genus evidently belongs to the Ctenistini, but exactly in which direction its affinities are most pronounced it is difficult to state. In the recent table of the Ctenistini by Mr. Raff- ray I should be disposed to place it in a distinct section between Chennium and Ctenistes and the three principal headings would then read : — 500 Coleopterological Noticed, V. A. 3 — Maxillary palpi very small, of two or three joints. Chennium, Atinus ami Biotus A. 2 — Maxillary palpi moderate, elongate, cylindrical, of three joints. Anitra A. 1 — Maxillary palpi well developed, of four joints Ctenistes, etc. Although not at all resembling Chennium, it is probably more closely allied to that genus than to any other thus far described. Mr. Raffray states on page 32 of the " Etude," that the Ctenis- tini and Tyrini are distinguished by having the first ventral very small and visible only between the coxte ; this is certainly not the case in Desimia, Ctenisis and Sognorus, typical ctenistide genera, in which I distinctly trace the first segment from side to side be- hind the coxai. There also seems to be some uncertainty in the assii»:nment of genera to the Ctenistini and Tyrini, Tmesiphorus, for example, apparently being much more closely allied to D<^imia and Ctenistes than to Tyrus, not only in general structure but in the form of the palpi and in the latero-inferior excavations of the head near the base, with the resultant spiniform prominences near the eye. A. glabenila n. sp. — Rather stout, polished and pale yellowish-brown throughout ; integuments subglahrous, tlie anterior parts with excessively minute and remote suberect setae, long coarse and denser behind the eyes, long sparse and bristling on the ocular canthus and on the large surface of the clypeus below the antennae, longer and porrect at the apex of the elytra, on the abdomen closer even coarse and recumbent as in Ctenistes ; the tubercle at the base of the pronotum is also densely clothed with long coarse decum- bent setae. Head as wide as long, the tubercle very narrow, scarcely more than one-fourth as wide as the width across the eyes ; antennae foui'-llfths as long as the body, the third joint feebly obconical, twice as long as wide, three to eight equal in width, the latter quadrate, ninth a little thicker, oval, tenth similar, though a little larger, oval, longer than wide, eleventh thicker, cylindrical, obtusely, obliquely pointed at tip, as long as the three preceding. Prolhorax scarcely as wide as the head, widest at basal third where the sides are rounded, thence feebly convergent to the apex which is broad and sub- equal to the base ; disk convex, strongly declivous laterally, one-third wider than long. Jilytra not as long as wide, tiiree-fourths longer than tlie protho- rax and twice as wide; humeri elevated, rounded and obtuse, the humeral width four-fifths of the subapical. Abdomen as wide as the elytra and slightly shorter, convex, strongly declivous behind, the surface even throughout. Length 1.25 mm. ; width 0.6 mm. Arizona. The single specimen is a male but with very feeble sexual char- acters as far as can be observed. This species is probably myrme- cophilous. Coleopterological Notices, V. 501 SOGIVORUS Reitter. Ctenistes Lee. nee Reich. There is apparently but little doubt that the American species separated under this name by Reitter should be considered generic- ally distinct from Ctenistes, for, apart from the radically different structure of the antennae, the second joint of the maxillary palpi is very much more slender and elongate in the former than in the latter. The fact that the difference of antennal structure evinces itself principally in one sex does not by any means deprive it of significance in the present family, where sexual characters fre- quently become of generic import. Sognorus is truly very closely allied to Ctenistes, but I think that the characters given must compel us to treat it for the present as a valid genus. The species of the United States may be known as follows: — Smaller species, not exceeding If miu. in length. Atlantic and Gnlf regions. Appendiculate processes of the maxillary palpi short, not longer than the width of the joints. Blacker ; elytra not as long as wide ; antennae shorter ; pubescence sparse piceus More testaceous or ferruginous, the pubescence denser shorter and more squamiform ; antennae longer consoliriniis Appendiculate processes very long, about twice as long as the width of the joints ; antennae very slender, more inerassate toward tip, the last joint stouter and subequal to the four preceding together in the male. zimiueriiianni Larger species, never less than 2 mm. in length. Arid regions of Arizona and northern Mexico. Antennae more slender, the fifth joint in the male shorter than the fourth, though one-half longer than wide ; last two joints of the maxillary palpi gradually and greatly produced at the sides, with the apical appendage short. Eyes small, from above about one-fourth as wide as the interocular sur- face and situated atone-half their length fiom the base; body stout. Southern California pillTereilS Eyes very large and prominent, one-half as wide as the interocular sur- face, the tempora very short ; body narrower and less robust. ocularis Antennae long but much stouter, the fifth joint in the male much shorter than the fourth and but slightly longer than wide ; last two joints of the maxillary palpi abruptly produced at the sides in a much shorter process bearing a short apical appendage ; eyes large, prominent, about one-third as wide as the interocular surface ; elytra longer, with more oblique sides and narrower humeri a1>ruptlIS 502 Coleopterological Notices, V. The eastern species form a difficult study, and several specimens in my cabinet seem to indicate varieties or closely allied species, which it is impossible to define at present. S. ocularis n. sp. — Elongate, somewhat convex, polished, subimpunctate and rather pale rufo-ferruo;inous throughout : pubescence coarse, sparse and recumbent but not squamiform. Head as long as the width across the eyes, the latter very large and extremely coarsely faceted ; fovese separated by one- third the total width ; frontal tubercle narrow, scarcely wider than the eye ; antennae long, slender, cylindrical, fully two-thirds as long as the body, the eleventh joint scarcely perceptibly stouter, as long as the three preceding, the latter mutually subequal and a little shorter than the seventh. Protliorax just visibly wider than the head, two-fifths wider than long, the sides sub- parallel in basal half, feebly convergent thence to the apex ; apex and base truncate, the former three-fourths as wide as the latter ; three elongate fovese occupying basal half densely pubescent. Elytra scarcely as long as wide, twice as long and twice as wide as the protliorax ; humeri distinct, elevated, rounded ; humeral width three-fourths of the subaj)ical ; discal impression broad, glabrous, very deep toward base, gradually evanescent toward apex. Abdomen as long and about as wide as the elytra ; border very strong ; first four dorsals equal in length. Length 2.2 mm. ; width 0.8 mm. Arizona. Described from the male, which is the only sex known to me. Easily distinguishable from pidvereun by the characters given in the table. S. abriiptus n. sp. — Moderately stout, feebly convex, polished, sub- impunctate and dark rufo-testaceous throughout ; pubescence short, coarse sparse and recumbent but scarcely squamiform. Head about as long as the width across the eyes, the frontal tubercle one-third as wide as the latter; fove?e rather small ; nuchal constriction densely pubescent laterally as usual ; antennse long and thick, scarcely at all incrassate toward apex, nearly two- thirds as long as the body, the last joint longer than the preceding three, oblique at tip, eighth much shorter than the seventh or ninth, transverse. Protliorax as wide as the head, one-fourth wider than long ; sides subparallel in more than basal half then feebly convergent to the truncate apex, which is fully three-fourths as wide as the base ; foveas elongate, densely pubescent, small, extending not quite one-third the length from the base. Elytra large, about as long as wide, twice as long as the prothorax and rather more than twice as wide ; sides very oblique from apex to base and scarcely arcuate ; humeri feebly exposed ; humeral width barely two-thirds of the subapical ; disk rather flattened ; discal line narrower, deep toward base. Abdomen not quite as long or wide as the elytra, of the usual structure ; border relatively not quite as wide as in ocularis. Length 2.3 mm. ; width 0.9 mm. Arizona. This interesting species, which is represented by the male only, Coleopterological Notices, V. 503 differs from ocularis and pidvereus not only in the structure of the palpi and antennae, but in the smaller foveas of the head and pro- notum, and in the larger elytra, much more strongly narrowed from apex to base. CTEIVISIS Raffray. This genus was proposed by Mr. Raffray (Rev. d'Ent., 1890, p. 143) to receive certain American species previously described under the names Ctenistes and Desimia. It is related to the latter of these, but has the second dorsal segment not notably longer than the first and also differs in the form of the palpi. The antennae are similar to those of the European Desimia and Ctenistes, but the palpi of Desimia have the last joint bifid and in fact perfectly similar throughout to those of Tmesiphorus ; there are also other suggestive points of resemblance between Desimia and Tmesi- phorus. In Ctenisis the last two joints of the palpi are in the form of a regular isosceles triangle, each attached by the acute angle near the internal angle of the preceding. The single known species entering the United States may be described as follows : — C. raffrayi n. sp. — Rather slender, moderately convex, polished, sub- impunctate and ferruginous throughout ; pubescence short, subrecunibent, sparse, coarse but not squamiform. Head across the eyes rather wider than long, the eyes very large and prominent, one-half as wide as the interocular surface ; upper surface flattened, with three fovese forming an equilateral tri- angle ; frontal tubercle narrow, not wider than the eye from above ; antennae long and slender, two-thirds as long as the body, joints three to seven small, moniliform, wider than long, eight to ten thicker, cylindrical, the eighth as long as the preceding four together, a little longer than the ninth but shorter than the tenth, the latter twice as long as wide, eleventh but little thicker, cylindrical, one-half longer than the tenth, obtusely pointed. Protltorax as wide as the head, two-fifths wider than long ; sides parallel to the middle, then feebly convergent to the truncate apex, which is three-fourths as wide as the base ; disk with three very densely pubescent subfoveate areas along the basal margin. Elytra nearly as long as wide, twice as wide as the prothorax and nearly twice as long ; sides broadly rounded behind ; humeri very obtusely rounded ; humeral width four-tifths of the subapical ; discal glabrous line evanescent toward apex. Abdomen a little narrower than the elytra but nearly as long ; border strong, inclined. Length 1.65 mm. ; width 0.65 mm. Arizona (Tu9son). Mr. H. F. Wickham. The description refers to the male, the anterior tibiae being thick- ened somew^hat as in Tmesiphorus. In the unique type the last ventral segment is very short, unimpressed but sinuate at apex; the 504 Coleopterological Notices, V. last dorsal is also sinuate at apex and is acutely elevated near the middle of the disk — generally a female character in Batrisus and Arthmius, although common to both male and female in Batrisus denticauda. The stomata of the last dorsal form round perforate and conspicuous foveae at the extreme lateral angles of the disk; they are also visible at the sides of the disk on the penultimate seg- ment. Raffrayi differs greatly from the Mexican dispar Shp. in the relative proportions of the antennal joints, and especially in the shorter eighth joint ; it also differs in the narrower form of the body and uniform dull brownish-ferruginous color. It is presumably identical with the form referred to by Dr. Brendel (Tr. Am. Ent. Soc, XX, p. 282), as having been recently taken by Mr. Bolter in Arizona. I take pleasure in dedicating this species to Mr. Achille Rafifray, whose excellent work is doing so much to advance our knowledge of these fascinating little organisms. The plates recently published by Mr. Raffray, which appear to be simple reproductions of pencil drawings by photo-mechanical processes, were never surpassed by lithographer or engraver, and are doubtless as true to nature as they are beautiful in execution. In the following synonymical list of the Pselaphidse thus far described from America north of Mexico, the arrangement of Mr. Rafifray is adhered to throughout, except where modified in the pre- ceding notes : — PSELAPHINiE. Morius Csy. Faronini. occideiis Csy. P Sonoma Csy. isabellffi Lee. P. Rhexius Lee. cortlcina Csy. P. inseulptus Lee. A graiidiceps Csy. P. substriatns Lee. G longicollis Csy. P. schmitti Budl. A subsiniilis Csy. P. rabida Csy. parviceps Makl. cavifrons Csy. P. P. P. Oropus Csy. striatus Lee. convex us Csy. P P. Rafonus Csy. interruptus Csy. P tolulse Lee. A. abbreviatus Csy. P EtJPLECTlNI. Rhinoscepsis Lee. * niontanus Csy. cavicauda Csy. P P. bistriata Lee. G. Coleopterological Notices, V. 505 Rhezidius Csy. Corio/jlectus Bndl. Prorhexius Raffr. granulosus Csy. P. asperulus Csy. P. * canaliculatus Lee. G. sylvattcus Raflfr. trogasteroides Bndl. A. intermedius Bndl. A. Ramecia Csy. criuita Bndl. A capitulum Csy. G arcuata Lee. A discreta Csy. A decora Csy. G deutiventris Csy. A Oropodes Csy. orbiceps Csy. P Acolonia Csy. cavicollis Lee. G Euplectus Leaeh. difficilis Lee. A. congener Csy. A. sexualis Csy. A. spinifer Csy. G. linearis Lee. A. hudsonicus Csy. A. interruptus Leo. A. loDgissimus Bndl. A. longicollis Csy. A. confluens Lee. A. elongatus Bndl. A. californicus Csy. P. Jowensis Csy. M. pertenuis Csy. planipennis Bndl. rotundicollis Bndl. M. M. Thesiastes Csy. fossulatus Bndl. M. pumilus Lee. A. G. debilis Lee. G. tenuis Lee. atratus Csy. A. Bibloplectus Reit. ruficeps Leo. G. integer Lee. M. levieeps Csy. A. Trimioplectus Bndl. obsoletus Bndl. M. Bibloporus Thorns. Fuliscus Csy. bicanalis Csy. A. Eutyphlus Lee. Nicotheus Csy. similis Lee. J A tibialis Csy. % prominens Csy. A Thesium Csy. cavifrons Lee. G latieoUe Csy. G Actium Csy. Proplectus RalFr. californieum Lee. P. pallidum Csy. decipiens Raflfr. politum Csy. P. robustulum Csy. P. testaceum Csy. P. candidum Csy. P. mariuieum Csy. P. foveicolle Lee. A. costale Bndl. A. pacificum Csy. P. brevipenne Csy. P. clavicorne Makl. durum Bndl. Annals N. Y. Acad. Sci., VII, Nov. 1893.— 33 506 Coleoj-terological Notices, V parabolicum Bndl. M. globifer Lee. A. impiiiictatuui Bndl. A. Trimiopsis Keit. gracilis Biidl. M. americana Lee. A. thoracica Bndl. M. laticollis Bndl. M. puncticollis Lee. S. dubia Lee. A. convexula Lee. A. discolor Lee. G. simplex Lee. Gr. parvula Lee. G. maja Bndl. M. Batrisini. Batrisus Anbe. ionfe Lee. A. arniiger Lee. A. monstrosus Lee. A. T.ferox Lee. V. cristatus Lee. cavieriis Csy. A. eonfinis Lee. A. carolinse Csy. A. juveneus Bndl. M. * monticola Csy. P. oceiduiis Csy. P. albionicus Aube. P. aculeutus Lee. i. 1. zepliyriuus Csy. P. mendocino Csy. V. speculum Csy. eieatrieosus Bndl. P. pygidialis Csy. P. denticauda Csy. P. schaumi Aube. A. punctatus Lee. riparius Say. A. scabriceps Lee. A. lineatieollis AuM. A. bistriatus Lee. A. frontalis Lee. A. globosus Lee. A spretus Lee. A foveicornis Csy. A punctifrous Csy. A virginiae Csy. A fureatus Bndl. A sinuatifrons Bndl. G clypeonotus Bndl. G luculentns Csy. A denticollis Csy. A triangulifer Bndl. M spirnfer \ Bndl. nigricans Lee. A striatus Lee. A. M cephalotes Csy. aterrimus Csy. simplex Lee. Arthmius Lee. globicollis Lee. A. bulbifer Csy. G. involutus Csy. A. gracilior Csy. G. ArianopB Bndl. Anops II Bndl. amblyoponica Bndl. A. Bkyaxini. Decarthron Bndl. abnorme Lee. A. exseetura Bndl. A. stigmosura Bndl. A. brendeli Csy. G. marinum Bndl. G. strenuum Bndl. A. longulum Bndl. A. scarificatum Bndl. M. seriepiinctatum Bndl. A. discolor Bndl. S. formiceti Lee. A. G. velutinum Lee. Rybasds Saulcy. valid a Bndl. A. sanguinea % Lee. Coleopterologi'cal Notices, V. 507 coiijuucta Lee. A. varicornix Bndl. i. 1. truncaticornis Bndl. M. brendeli Horn. A. clavata || Bndl. mystica Csy. A. Bryaxis Leach. s. g. Nisa Csy. luniger Lee. A. cavicornis Bndl. A. perpuncfata Bndl. A. elegans Bndl. S. s. g. Bryaxis Lch. abdoniinalis Aube. A. floridana Bndl. G. intermedia Bndl. A. labyrinthea Csy. A. ulkei Bndl. A. illiuoiensis Bndl. A. dentata Say. A. intricata Csy. A. terebrata Csy. A. perjorata \\ Bndl. foveata Lee. S. belfragei Lee. G. infinita Csy. G. loripes Csy. S. texana Csy. S. arizonse Csy. S. Reichenbachia Lch. gemmifer Lee. M. divergens Lee. A. canadensis Bndl. cylindrartus Bndl. M. radians Lee. M. faeilis Csy. A. atlantica Bndl. G. congener Bndl. A. scabra Bndl. A. cribricollis Bndl. M. rubicunda Aub6. A. gracilis Csy. M. gracilicornis Csy. G. furtiva Csy. A. inepta Csy. A trigona Lee. M bieolor Bndl, M punetieoUis Lee. A iuopia Csy. A. G litoralis Bndl. polita Bndl. A demissa Csy. A sagax Lee. P albionica Mots. P propinqua Lee. A. M informis Csy. P tumidieornis Csy. P tumorosa Csy. P compar Lee. P franciscana Csy. depressifrons Bndl. P deformata Lee. P fundata Csy. P nevadensis Csy. P turaida Lee. S eompleetens Lee. S wickhami Bndl. s. subtilis Lee. s. minuta Bndl. Nisaxis Csy. tomentosa Aube. A. G. V. cincinnata Csy. maritima Csy. G. Scalenarthrus Lee. liorui Lee. S. Eutrichites Lee. zonatus Bndl. A. G. simmer manni Lee. dixianus Zim. i. 1. Fselaptus Lee. belfragei Lee. G. Anchylarthron Bndl. Verticinotus Bndl. eornutum Bndl. M. inornatum Bndl. J . 508 Coleopterological Notices, V. Eupsenius Lee. glaber Lee. A. G. rufus Lee. G. Bythintni. Bythinus Leach. Machcerodes BndL tychoides Bndl. A. bythinioides BndL Olim. carinatus BndL A. Pselaptrichus BndL tuberculipalpus BndL P. Cylindrarctus Schf. longipalpis Lee. G. americanus Schauf. M. hidovicianus BndL G. eomes Csy. G. crinifer Csy. M. Tychus Leach. nainor Lee. A. testaceus Csy. spieulifer Csy. A. verticalis Csy. A. microphthalmus BndL M. puberulus Lee. P. cognatus Lee. P. hipimcticeps Csy. sonomse Csy. P. teuellus Lee. P. Valda Csy. frontalis Csy. P. PSELAPHINI. Pselaphus Hbst. erichsoni Lee. A. longiclavus Lee. A. fnstifer Csy. A. bellax Csy. A. Ctenistini. Biotus Csy. formicarius Csy. P Atinus Horn. monilicornis BndL A brevicornis Csy. G Anitra Csy. glaberula Csy. S Sognorus Reit. Ctenistes t Lee. piceus Lee. A consobrinus Lee. A zimmermanni Lee. A G pulvereus Lee. S ocularis Csy. S abruptus Csy. s Ctenisis Raffr. rafFrayi Csy. s Ceophyllus Lee. monilis Lee. M. Tyrini. Tmesiphorus Lee. costalis Lee. A. M. carinatus Say. A.M. Cedius Lee. ziegleri Lee. A. M spinosus Lee. A. M Tyrus Aube. Pytna Csy. humeralis Aub6. A compar Lee. cortieinus Csy. P elongatus BndL S Cercocerus Lee. batrisoides Lee. G. Adranes Lee. coecus Lee. A lecontei BndL M Coleopterological Notices, V. 509 CLAVIGERIN^. Fustiger Leo. faehsi Bndl. A. californicas BndL S. In this list the succession of names in the various genera is, as nearly as possible, that recently given by Dr. Brendel. The letters placed after the various species are intended to give a general idea of their geographic distribution; they represent (A) the Atlantic regions of the continent, (G) the Gulf States from Florida to Texas, (M) the Missouri region including the Great Lakes, (S) the Sonoran region from vi'estern Texas and Utah to southern California, and (P) the true Pacific Coast fauna. Because of insufficient data, no form of nomenclature more discriminating than this can be em- ployed at present. In comparing this list with the most recent catalogue of the European species, there are only three points to which special attention need be invited: — 1 — The species are but slightly more than one-half as numerous as those at present recognized as valid in the European fauna. 2 — The genera, however, exceed in number those of Europe by about one-third, with twelve, viz. : Euplectus, Bibloplectus, Bib- loporus, Batrisus, Bryaxis, Reichenbachia, Rybaxis, Bythinus, Tychus, Pselaphus, Sognorus and Tyrus common to the two con- tinents. 3 — There are no species at present recognized as being common to Europe and America. The original estimate of LeConte, that the pselaphide fauna of North America surpasses in richness that of Europe, is true I think as far as the genera are concerned, but not in regard to the species. The conditions of land, water and mountain distribution, with re- sultant climate, are so much more varied in the vast expanses from Cape North to Gibraltar and the Caucasus, that it is not probable — in spite of the subequality of land area — that the species of America will be found to approach in number those of Europe, even when the two regions are similarly explored, especially, also, as there seems to be no difference in the relative abundance of individuals in the palaearctic region. That the number of genera in the United States should be greater, is to be accounted for, partially at least, by the fact that many neotropical genera such as Thesium, Arth- mius, Pselaptus and Ctenisis so readily find their way across our Mexican frontier. 510 Coleopterological Notices, V. SCAPHIDIID^. The Scaphidiidse are a small family of beetles, which to the gene- ral student of the Coleoptera are less interesting than usual, be- cause of their unusually small size and the monotony in outward appearance characterizing the more minute forms, and, to the sys- tematist, because of the fact that some of the more important scle- rites of the under surface frequently become amalgamated, in such a way that it is often difficult and sometimes impossible to trace them. On the other hand there is sometimes a remarkable and inexplicable doubling of the sutures. This obliteration of the sutures, has led the author of a recent extended contribution to the literature of the family into the singular error of supposing that the raesosternal episterna in Scaphisoma and other allied genera, are very small and hidden under the elytra, or ante- humeral, while, as can readily be seen by inspecting such genera as Scaphium or Toxidium, where the sutures are distinct, the truth is directly the reverse, the mes-episterna being unusually de- veloped and extending almost to the coxag. There are no new genera among the American species, and to give the famih^ characters would be almost a repetition of the lan- guage used by Lacordaire in the " Genera." There is but one point to which reference should be made in way of criticising the excellent introductory remarks referred to, it being stated (II, p. 237) that the metasternal parapleuras " sont compotees d'une seule piece." The met-epimeron is nearly always distinct and well de- veloped, although the suture separating it from the episternum very rarely disappears as in Cyparium. In regard to the external affinities of the Scaphidiidse but little can be said. A few characters seem to remind us of that olla- podrida of discordances known as the Silphidae, and one or two features vaguely suggest certain parallelism with the Phalacridae ; but the family is really very isolated in the structure of the ex- ternal skeleton, the connective bonds with other groups of Clavi- cornia having apparently disappeared. The family comprises two distinct tribes as follows: — Antennae with a broad abrupt and somewhat flattened five-jointed club; scu- tellurn well-developed ; mes-epimera sublongitudinal, separating the epis- terna fiom the elytra throughout their extent ; met-episternal suture double ; tarsi shorter and thicker; elytral punctures seriate Scapuidiini Coleopterological Notices, V. 511 Aiitennse slender and subfiliform, the outer five or six joints elongate, flat- tened, loosely connected and more or less asymmetrically dilated ; scutellum minute or wanting ; mes-epimera transverse, variable in size, sometimes obliterated ; met-episternal suture single ; tarsi longer and more slender ; elytral punctures not seriate Scaphisomint The genera may be thus epitomized: — Tribe Scaphidiini. Suture between the metasternum and mes-episterna single; basal angles of the prothorax not posteriorly prolonged ; eyes entire. Basal joint of the hind tarsi short ; posterior tibiae not spinose externally ; eighth antennal joint smaller than the seventh ; prosternum well devel- oped before the coxae, not carinate ScapIlilllU Basal joint elongate ; posterior tibiae sparsely and finely spinose externally ; eighth antennal joint not smaller than the seventh ; prosternum very short before the coxae, the head more inflexed Cyparilim. Suture strongly double ; posterior angles acute and somewhat produced ; eyes emarginate ; prosternum carinate and deeply biexcavate before the coxae. Scaphidiuin Tribe Scaphisomini. Third antennal joint elongate and cylindrical. Body oval ; sutural stria of the elytra attaining the base ; mes-epimera well developed ; scutellum generally wanting, when present very transverse, parabolic Baeocera Body compressed ; sutural stria not attaining the base ; mes-epimera not visible ; scutellum wanting ToxidilllU Third antennal joint very short, claviform or triangular, always strongly narrowed to the base ; scutellum minute but never obsolete, equilaterally triangular ; sutural stria attaining the base ; mes-epimera variable in size. Scapliisoiua All of these genera, except Cyparium and Toxidium, occur also in Europe, and the European Scaphoschema appears to be unrepre- sented in America. SCAPHIUME Kirby. The appreciable interval between the eyes and point of antennal insertion and the very short basal joint of the posterior tarsi, are characters which force us to place this genus at one of the extremes of the family. Its elongate form, small eyes and more regularly striate elytra, are also exceptional features. We have a single subarctic species : — 512 Coleopterological Notices, V. S. castanipes Kirby — Faun. Bor. Am., IV, p. 109. Elongate, oblong, convex, polished, black and glabrous, the an- tennse rufous; legs piceo-rufous, the head minutely sparsely and obsoletely, the pronotum more closely and strongly punctate, the punctures coarse dense and confused in a transverse area near the base and also broadly along the median line near the base; elytra with feebly impressed, coarsely and closely punctured striae, con- fused near the apex and obliterated on the flanks, the intervals feebly sparsely and more finely punctate; sutural stria subimpunc- tate, becoming at base a series of coarse punctures, curved outward along the base to the fourth stria. Head not quite vertical, flat above ; eyes convex, separated by four or five times their own width ; antennae about as long as the prothorax, the third joint a little shorter than the fourth, not quite three times as long as wide. Prothorax one-third wider than long, widest just before the middle ; sides subparallel and strongly sinuate thence to the base, broadly rounded and convergent to the apex ; base broadly evenly and feebly bisinuate. Scutellum large, semicircular. Elytra one-fourth longer than wide, oblong, nearly twice as long as the prothorax and one-third wider ; sides subparallel, feebly arcuate. Length 4.8 mm.; width 2.3 mm. Lake Superior. Taken in some abundance by Mr. Schwarz, to whom I am indebted for the two specimens in my cabinet. This species was unknown to Dr. LeConte when he drew up his synopsis of the family. CYPARIUm Erichs. This genus is very isolated, but seems to be somewhat more closely related to Scaphium than to Scaphidium, although resem- bling the latter in general form and habitus. We have only one si»ecies : — C. flaTipes Lee— Proc. Ac. Nat. Sci., Phila., 1860, p. 322. Broadly oblong-oval, highly polished, glabrous, black, the elytra, legs and antennee paler, rufo-castaneous ; integuments not distinctly puuctulate, the elytra with partial series of rather coarse punctures, confused at apex, the series becoming longer toward the suture, the sutural stria alone impressed, punctate, flexed outward at base, be- coming a fine impunctate basal stria extending beyond the middle. Head slightly inflexed ; eyes very large, separated by less than Coleopterological Notices, V. 513 their own width ; antennas as long as the prothorax, situated at the margin of the eyes, the third joint fully three times as long as Avide, a little longer than the second and much longer than the fourth, sixth slightly longer than wide, tenth twice as wide as long, the club compressed as usual. Prothorax four-fifths wider than long ; apex beaded throughout the width, less than one-half as wide as the base, the latter transverse, the scutellar lobe one- fourth of the entire width, feeble and broadly subtruncate ; basal angles right, not rounded; sides broadly, evenly' rounded from base to apex. Scutellum parabolic, nearly as long as wide. Elytra as long as wide, not quite twice as long as the prothorax, a little wider at basal fourth than at base; sides subparallel, feebly arcu- ate ; apex equal to the base. Post-coxal plates not developed. Legs stout; posterior tibiae arcuate, the tarsi two-thirds as long as the tibiae, with the first joint as long as the next two and equal to the fifth. Length 3.5 mm.; width 2.1 mm. North Carolina. The epipleurae of the elytra are well defined throughout by the acute lateral edge, and are distinctly inflexed from base to apex. SCAPniDlUM Oliv. The emarginate eyes and produced acute basal angles of the pro- thorax readily distinguish this genus from either of the preceding. The double transverse sutures between the middle coxa?, and be- tween the mesosternal episternum and metasternum, are remark- abl}^ developed, and the apex of the metasternum appears to be somewhat bilobed. The male is distinguished from the female by a large depressed punctate and pubescent area occupying the me- dian parts of the metasternum. We appear to have but two spe- cies, which may be separated by the following characters: — Elytra each with two transverse red spots which extend inward two-thirds tlie entire width, tjie spots obsolete in var. piceum quadrigllttatlint Elytra each with two small marginal spotS' of pale flavate, not extending inward more than one-third of the width ; body more elongate ; size some- what larger ; elytra without coarse discal punctures obliteratlim These species are evidently allied but appear to be sufficiently distinct. I am unable at present to compare them with the Euro- pean quadrimaculatum Oliv,, but they are probably closely related. $14 Goleopterological Notices, V. S. qiiadrigllttatuiu Say. — Jouni. Ac. Phila., Ill, p. 198; quadnpusta- latum II Say : 1. c, p. 198 ; quadrinotatum Casteln ? : Hist. Nat., II, p. 19 ; Dej. Cat., 3d, p. 133 ; var. piceum Melsh. : Proc. Ac. Phila., II, p. 103. Oval, convex, big-hly polished, glabrous, black, the elytral maculae red; antennse, except the last five joints, testaceous; tarsi rufescent ; head subimpunctate ; pronotum sparsely and more or less deeply punctate, with a transverse, broadly bisinuate series of coarse punc- tures near the base ; elytra with two to four short, more or less de- veloped series of coarse punctures before the middle and nearer the suture than the sides, the sutural stria feebly impressed, more finely and closely punctate, except the part along the basal margin, which is coarsely punctate, extending to lateral third. Eyes large, sepa- rated by less than their own width ; antennae rather longer than the prothorax, the third joint slender, four times as long as wide, much longer than the second and a little longer than the fourth, sixth nearly twice as long as wide, tenth only slightly wider than long. Prothorax one-third wider than long, the convergent sides nearly straight from base to apex, the latter strongly beaded and one-half as wide as the base ; scutellar lobe one-third the entire width, broadly, evenly rounded. Scutellum rather small, parabolic, nearly as long as wide. Elytra not quite as long as wide, one-half longer than the prothorax ; sides arcuate ; apex a little narrower than the base. Posterior tarsi scarcely three-fifths as long as the feebly arcuate tibiae, the first joint a little longer than the next two, barely as long as the fifth. Length 3.8-4.7 mm. ; width 2.2- 2.65 mm. New Jersey to Kansas. I do not know at present whether the variety piceum occurs with the spotted specimens or not ; at any rate, it is impossible to discover any constant structural difference. S. Obliteratlim Lee— Proc. Ac. Nat. Sci., Phila., 1860, p. 322. The characters stated in the table are almost the only ones which can be given to distinuuish this species from the preceding. The prothorax is a little shorter and more transverse, with more arcuate sides, and the elytra are as long as wide and three-fourths longer than the prothorax. Length 4.7 mm. ; width 2.6 mm. Rhode Island to Indiana. Appears to be rare; I have only seen the female. Coleopterological Notices, V. 51'5 B^OCERA EricliS. In this genus the species are generally very small, but appear to be more constant and more isolated among themselves than in Scaphisoma. The most important structural features distinguish- ing these genera reside in the antennee and scutelkim, and there are but few if any others which are absolutely characteristic of either. The antennae have the outer three joints enlarged, forming a slender loose club, generally almost bilaterally symmetric, but occasionally more developed on the inner side, thus reverting to Scaphisoma ; this reversion is further recalled by the frequent, though moderate, enlargement of the seventh and eighth joints. The third joint is always slender and cylindrical, and is generally a little shorter than the fourth ; in this form of the third joint really lies the most im- portant antennal difference between the two genera. The scutellum is usually completely wanting, and, when present, affects a form quite foreign to Scaphisoma, being broadly trian- gular. The post-coxal plate of the first ventral segment is never at all developed in Baeocera, and the series of coarse punctures along the posterior margin of the intermediate and posterior ace- tabula are much better marked than in Scaphisoma. The sexual characters seem to be very obscure except in the larger species allied to concolor. The species known to me may be readily identified as follows: — Scutellum wanting, the mesonotum completely covered by the prothorax. Larger species, not less than 2 mm. in length. Sides of the prothorax feebly and evenly arcuate when viewed laterally ; basal stria of the elytra entire. Third antennal joint very long, slender, subequal to the fourth. concolor Third joint much shorter and thicker ; size smaller, less bioadly oval. congener Sides of the prothorax strongly bent downward posteriorly ; basal stria of the elytra broadly interrupted ; third antennal joint long and slender. deflexa Smaller species, never much exceeding H mm. in length. TJarrowly oval, the third antennal joint not longer than the fourth ; epistomal suture distinct. Larger species ; mes-epimera extending two-thirds to the coxae. speculifer Minute in size, the mes-epimera longer and narrower apiCHlis Broadly oval, minute ; third antennal joint a little longer than the fourth ; epistomal suture obsolete robustula 516 Coleopterological Notices, V. Scutellum minute but distinctly advanced between the elytra. Larger ; basal stria of the elytra entire ; third antennal joint as long as the fourth texaiia Minute species ; basal stria interrupted ; third antennal joint much shorter than the fourth. Basal angles of the prothorax acute ; met-episternum narrow ; color pice- ous-brown picea. Basal angles produced but truncate at apex ; met-episternum broad, the suture arcuate; body intense black nana B. concolor Fab. — Syst. El., II, p. 576 (Scaphidiura). Oblong-oval, broad, strongly convex, highly polished, subgla- brous, very sparsely and obsoletely punctulate throughout, black ; legs, antennae and abdominal vertex more or less paler, rufo-piceous. Head vertical ; eyes large ; antennae widely separated, very slender, not as long as the head and prothorax, the third joint fully five times as long as wide, very slightly shorter than the fourth, both shorter than the fifth, which is fully seven times as long as wide, seventh shorter than the sixth, eighth still shorter, seventh and eighth but slightly thicker, ninth longer than the tenth but shorter than the eleventh. Prothorax short, three-fourths wider than long, the apex one-third as wide as the base ; side margin, viewed later- ally, evenly, moderately arcuate. Scutellum wanting. Elytra barely as long as wide, scarcely twice as long as the prothorax, somewhat wider between basal third and fourth than at base, unusually broadly truncate at apex. Mes-epimera extending fully two-thirds to the coxag ; met-episterna between three and four times as long as wide, parallel, the suture coarse and deep. Posterior tarsi scarcely more than two-thirds as long as the tibiae, the first joint fully as long as the next three. Length 2.7 mm.; width 1.6-1.7 mm. Pennsylvania to Illinois. This is the largest known species within our boundaries, and may be known by its broadly sub- oblong-oval form. The description is taken from the female, the fifth ventral plate being broadly, feebly lobed in the middle, the sixth strongly produced in a more narrowly rounded lobe, the sides of the lobe feebly, evenly sinuato-oblique. In the male the fifth is broadly, feebly bisinuate toward the middle, the sixth ab- ruptly produced in the middle in a short, gradually narrowed, narrowly rounded ligula, as long as wide, flanked on either side by a small but deep rounded eniargination. There appears to be scarcely any sexual divergence in antennal structure. Three speci- mens, remarkably uniform in size. Coleojiterological Notices, V. 517 B. congener n. sp. — Rather stout, oval, black, subglabrous, impuTictate ; legs and anteiinse pale rufous. Head vertical, moderate in size ; epistomal suture very feeble ; antennae rather distant, not as slender as in concolor or deflexa, distinctly shorter than the head and prothorax, the third joint not quite three times as long as wide, oblique at apex, much shorter than the second, barely three-fourths as long as the fourth, the latter equal to the sixth, fifth a little longer, seventh and eighth distinctly thicker and more developed on the inner side, club long, subparallel, the ninth joint but little longer than the tenth. Prothorax almost semi-circular in outline from above, fully three-fourths wider than long ; basal lobe strongly rounded ; side mar- gins, viewed laterally, evenly, feebly arcuate ; basal angles acute. Scutellum completely wanting. Eli/tra about as long as wide, not quite twice as long as the prothorax, a little wider at basal fourth than at base ; apex obliquely and rather widely truncate, the angles moderately broadly rounded ; basal stria entire. Mes-epimera narrow, extending only three-fifths to the coxae ; met- episterna narrow, feebly, gradually narrowed throughout to the humeri, the suture coarse, straight ; epimera distinct, large, the dividing suture fine. Legs long ; posterior tarsi slightly shorter than the tibiae, with the basal joint fully as long as the next three. Length 2.0 mm. ; width 1.25 mm. New York (Long- Island); North Carolina; Iowa. This species closely resembles dejlexa, but may be known by the short third joint of the antennae, entire basal stria of the elytra and feebly, evenly arcuate lateral margin of the prothorax. From concolor it differs in its much smaller size and in antennal struc- ture. The male has the fifth ventral bisinuate, the sixth produced in a triangular, narrowly rounded process, flanked by deep, strongly rounded emarginations as in concolor, except that in congener the lobe is larger and more acutely triangular. Three specimens. B. deflexa n. sp. — Stout, broadly oval, subglabrous, the decumbent hairs being remote and very fine as usual, subimpunctate ; under surface, legs and antennae more or less paler, rufo-piceous. Head vertical ; eyes large but not attaining the base ; antennae moderately distant, very slender, not quite as long as the head and prothorax, the third joint rather more than five times as long as wide, distinctly longer than the second, scarcely as long as the fourth, four and five equal and a little longer than six and seven, eight still shorter though scarcely thicker and four times as long as wide, ninth longer than the tenth, both oblique at apex and distinctly more developed on the inner than on the outer side of the axial line. Prothorax from above almost semi-circular, four-fifths wider than long ; basal lobe rather large, strongly rounded. Scutellum completely wanting. Elytra fully as long as wide, twice as long as the prothorax, a little wider between basal fourth and fifth ; apex moderately wide, the external angles broadly rounded ; sutural and marginal striae deep, the basal broadly interrupted. Mes-epimera rather broad, extend- ing two-thirds to the coxfe ; met-episterna narrow, exactly parallel, the suture 518 Coleopterological Notices, V. very coarse and deep ; dividing line of the epimera very fine and feeble. Legs long, slender, the hind tarsi three-fourths as long as the tibiae, the basal joint as long as the next three. Length 2-5 mm. ; widtli 1.4 mm. Rhode Island (Boston Neck) ; "Virginia ; Indiana. The type is a male, having the fifth ventral plate very feebly bisinuate toward the middle, the sixth produced in a slender, gradually narrowed, acutely rounded process, longer than wide, flanked by broadly rounded shallow eraarginations which are larger and more feeble than in concolor. The species is also distinguish- able from concolor by Its saialler size, less obese form, relatively larger elytra with broadly and completely obliterated basal stria, and by the form of the lateral margin of the prothorax, which is more abruptly though broadly bent downward posteriorly. Four specimens. B. speculifer n. sp. — Rather narrowly oval, highly polished, black ; legs, antennje, tips of the elytra and abdominal apex paler, testaceous ; integu- ments subglabrous and subimpunctate. Head small, the eyes large, separated by more than their own width ; antennae slender, scarcely as long as the head and prothorax, joints three to seven subequal in length, eighth shorter, third four times as long as wide, seventh and eightli thicker, club almost symmetri- cal, joints nine and ten nearly equal, obconical, strongly compressed as usual. Prothorax short, two-thirds wider than long, strongly declivous anteriorly, the apex not visible from above but scarcely more than one-third as wide as the base ; basal lobe strong but evenly rounded ; angles rather acute. Scutellum completely wanting. Elytra rather longer than wide, twice as long as the prothorax, very broadly, feebly rounded at the sides biit somewhat wider at basal fourth than at base ; sutural and lateral strise deep, the latter slightly punctate ; basal and apical striae entire ; apex transversely truncate, the external angles broadly rounded. Mes-epimera rather short, barely extend- ing two-thirds to the coxae ; met-episterna narrow, subparallel, the suture coarse deep and unevenly punctate ; epimera distinct. Legs slender, the pos- terior tarsi very slender but quite distinctly shorter than the tibiae. Length 1.6 mm. ; width 0.9 mm. Iowa (Keokuk). This species perhaps resembles apicalis more than any other, but may be separated by its longer antennal joints and much more elongate mes-epimera, as well as by the more broadly oval form of the body and broader, less strongly rounded median thoracic lobe. Two precisely similar specimens. B. apicalis Lee— Proc. Ac. Nat. Sci., Phila., 1860, p. 323. Black, polished, subimpunctate and subglabrous ; elytra rufescent along the suture and apex; legs and abdomen rufous. Antennae Goleopterological Notices, V. 519 phort, not as long as the head and prothorax ; third and fourth joints f^ubequal, the former not quite three times as long as wide, slightly shorter than the sixth, much less elongate than the fifth and equal to the eighth, the latter much thicker; seventh as long as the fifth, evenly and symmetrically fusiform ; club symmetrical. Prothorax short, more than one-half wider than long, the basal lobe small and rounded. Scutellum completely obsolete. Elytra longer than wide, rather more than twice as long as the prothorax, slightly wider at basal third or fourth, the sides broadly, almost evenly arcuate ; sutural strias rather distant; apex obliquely truncate, the outer angles rather narrowly rounded. Mes-epimera long and narrow, extending nearly three-fourths to the coxse ; met-episterna narrow, the suture coarse but smooth, arcuately approaching close to the elytra anteriorly. Legs slender; posterior tarsi not as long as the tibise but with the basal joint as long as the next three. Length L25 mm. ; width 0.7 mm. Represented in my cabinet from Rhode Island, Pennsylvania and Michigan. The two specimens which I took near Philadelphia are both pale, but probably from immaturity, as I can perceive no struc- tural differences. It does not vary much in size, and the measure- ments are taken from an average specimen. B. rolllistllla n. sp. — Broadly oval, highly polished, snbglabrous and impunctate, black, the legs, aiiteinise and abdominal apex paler. Heud slightly in flexed ; eyes moderate, separated by nearly twice their own width ; epistomal suture completely obsolete ; antennse rather widely separated, very slender, fully as long as the head and prothorax, the third joint slender, four or five times as long as wide, distinctly longer than the fourth and equal to the fifth, fourth, sixth and eighth equal, the latter only just appreciably thicker, seventh longer than any of the preceding four, ninth elongate, obconical. Pi-othorax one-half wider than long, the apex not visible from above, barely two-fifths as wide as the base, the median lobe of the latter rather feebly rounded but distinct ; basal angles somewhat short but acute. Scutellum completely wanting. Ebjtra barely as long as wide, not quite twice as long as the prothorax, the sides very evenly elliptical and exactly continu- ous with those of the prothorax ; apex unusually narrow, the angles rounded ; sutural and lateral striae deep, the basal entire though feeble near lateral fifth., Mes-epimera rather short, scarcely extending two-thirds to the coxae, the met-episterna narrow, parallel, the suture deep and coarse ; epimera dis- tinct. Legs slender, the basal joint of the hind tarsi not as long as the next three. Length 1.2 mm. ; width 0.8 mm. Texas. The unusually elongate third antennal joint, with the seventh 520 Coleopterological Notices, V. and eighth scarcely thicker, the obliterated epistomal suture, ab- sence of scutellura and small, broadly and extremely evenly ellip- tical form, will readily serve for the identification of this distinct but minute species. Two specimens. B. texana n. sp. — Evenly oval, highly polished, det^p black; legs, antenuae and abdomen toward tip dark rufo-testaceous ; integuments sub- glabrous, the head and pronotum subimpunctate, with remote and fine, decumbent and scarcely visible hairs ; elytra remotely, obsoletely punctulate and similarly pubescent ; sterna impunctate, the row of punctures behind the middle and posterior coxae very strong. Head small ; eyes moderate ; antennae slender, not quite as long as the head and prothorax, the joints three, four and six equal and four times as long as wide, five and seven longer, seven and eight thicker, arcuate within, the latter three times as long as wide, joints of the club rapidly increasing in length, the ninth not quite symmetrical. Prothorax three-fifths wider than long, the apex scarcely more than one-third as wide as the base ; basal lobe rather feeble and broadly rounded ; basal angles somewhat acute. Scutellum visible, more than twice as wide as long. Elytra as long as wide, three-fourths longer than the prothorax, scarcely at all wider behind the base ; sutural stria deep, the lateral coarse, more or less punctate, the basal fine but entire ; apex obliquely truncate, the outer angles rounded. Mes-epimera long, extending almost three-fourths to the coxae ; met-episterna more than three times as long as wide, the suture coarse and deep, feebly and arcuately approaching very near to the elytra anteriorly ; epimera distinct. Posterior tarsi scarcely as long as the tibiae. Length 1.7 mm. ; width 0.95 mm. Texas. Distinguishable at once from speculifer by its visible scutellum, and from dejiexa by the same character, in addition to its much smaller size and narrower form. B. picea n. sp. — Rather broadly oval, dark rufo-piceous, the legs, antennae and abdominal vertex rufous ; integuments subglabrous, impunctate and highly polished. Head small ; eyes separated by more than their own width, minutely and feebly emarginated by the antennae as usual ; epistoma long, subquadrate, rather longer than wide ; antennae short, scarcely as long as the head and prothorax, the third joint scarcely more than twice as long as wide and only two-thirds as long as the fourth, four to six slender, subequal, seventh and eighth longer and much thicker, but slightly asymmetric, the eighth only slightly shorter than the seventh, eleventh more than twice as long as wide. Prothorax nearly three-fourths wider than long, the apex much less than one- half as wide as the base, the basal lobe well developed, rounded ; angles acute. Scutellum visible, more than twice as wide as long. Elytra fully as long as wide, rather more than twice as long as the prothorax, quite distinctly wider at basal fourth than at base, the basal stria broadly interrupted. Mes-epimera Coleopterological Notices, V. 521 slender but not extending more than two-thirds to the coxfe ; met-episterna long, narrow, the suture strong but even, feebly oblique toward the humeri throughout, almost straight ; epimera distinctly separated. Legs slender ; posterior tarsi almost as long as the tibite, the basal joint not as long as the next three. Length 1.25 mm.; width 0.75 mm. Pennsylvania. Allied somewhat to nana, but differing in its larger size, paler coloration, larger and longer epistonia, more distant antennae, acute basal angles of the prothorax, narrower met-episterna with straight arid not evenly arcuate dividing suture, and several other features. Two specimens. B. nana n. sp. — Moderately broad, highly i^olished and completely im- l>unctate throughout, black, the legs rufo-testaceous ; antennae slightly paler toward base ; integuments with extremely sparse recumbent hairs on the head, femora and abdomen. Head small ; antennae as long as the head and pro- thorax, the first two joints as long as the next three, third scarcely more than twice as long as wide and distinctly shorter than the fourth, four to eight subequal in length, the fifth and seventh a little longer, seventh and eighth stouter, nine to eleven broader forming the long loose club. Prothorax one- half wider than long, the apex not quite one-half as wide as the base ; median lobe distinct, rounded ; basal angles but slightly produced and distinctly truncate. Scutellum distinct, more than twice as wide as long. Elytra as long as wide, nearly twice as long as the prothorax, widest at about basal fifth ; apex truncate, the external angles rather broadly rounded ; sutural stria extending along the base nearly to the middle, the lateral slightly iuttexed at base. Mes-epimera narrow, extending fully two-thirds to the coxae ; met-episterna unusually wide, barely two and one-half times as long as wide, the suture parallel, distinctly arcuate, moderately coarse ; epimera small, the suture deep. Posterior tarsi as long as the tibiae, the first joint as long as the next two. Length 1.1 mm. ; width 0.75 mm. Rhode Island ; Michigan ; Texas. Readily known by the truncate basal angles of the pronotum, the extremity of the lateral acute line of the prothorax being far below the line of the elytra, the met-episterna rather broader than usual with the suture arcuate, and by the evident scutellum. It is widely diffused, and the specimens in my cabinet diff"er very little among themselves even in size. TOXIDIUM Lee. This genus is exceedingly distinct and isolated, but approaches Bseocera in general organization much more closely than Scaphi- soma. It resembles the former in the slender cylindrical third an- Annals N. Y. Acad. Sci., VII, Nov. 1S93.— 34 522 Coleopterological Notices, V. tennal joint, complete absence of scutelliim and absence of all trace of a dilated post-coxal plate on the first ventral segment, and sug- gests certain types of the latter by the excessively small or obsolete mes-epimera. It however differs from both in the compressed body, more transversely elongate and more narrowly separated hind coxae, narrower met-episterna, narrowed posteriorly and not anteriorly, in the still longer tarsi and longer tibial spurs, in having the large side-piece of the mesosternum clearly separated by a longitudinal suture near the coxas, and in the fact that the sutural stria of the elytra does not attain the base. Our two species are very strongh' differentiated but cannot be separated generically ; they may be defined as follows: — Basal angles of the protliorax only very feebly produced, obtusely angiilate, the side-margin of the protliorax attaining their apices ; metasternuni gen- erally with a cluster of four or five coarse punctures near the middle coxae. ganiniaroides Basal angles not at all produced, obtuse and somewhat blunt; side-margin of the prothorax rapidly deflexed, meeting the sides of the pronotum far iu front of the basal angles, the intervening edge upwardly oblique ; meta- sternum coarsely, deeply punctured throughout COnipresSllIU In gamwaroides there is a slight downward flexure in the acute lateral margins of the prothorax opposite the point where these margins terminate in covipi-essum, suggesting a merely less de- veloped form of the same structure. T. ganimaroides Ltc— Proc. Ac. Nat. Sci., Phila., IStO, p. 324. Narrow, polished, scarcely punctate, black; tip of abdomen, legs and antennae rufous. Antenna slender, nearly as long as the head and prothorax, the third joint slender, almost four limes as long as wide, shorter than the fourth, the latter not as long as the fifth but equal to the sixth; seventh slightly stout; eighth more slender; club moderate in length. Met-episterna posteriorly onl}" one-half as wide as near the base; suture coarse and deep; epimera small, extending inward far within the episterna, meeting the tips of the hind coxae. Length 1.6-1.8 mm.; width 0.7-0.75 mm. Rhode Island and New York; LeConte indicates "Southern and Western States," but may have confounded the next species. T. coinpressiim Zimm. — Trans. Am. Ent. Soc , 1869, p. 251. Greatly resembles the preceding but rather shorter, broader and dark red-brown in color. Besides the characters already noted Goleopterological Notices, V. 523 compressum differs from gammaroides in the narrower and more parallel niet-episteroa. Length 1.4-l.T mm.; width 0.7-0.8 mm. Kansas and Nebraska to Florida. I can distinguish no distinct trace of mes-epimera in either of these species. SCAPHISOMA Leach. The species of Scaphisoma exceed in number those of Bteocera, but are less readily difl'erentiable. The antennae are generally longer and have the outer joints more bilaterally asymmetric as a rule, the third joint always very small, seldom more than one-half as long as the fourth, enlarged and more or less oblique at apex and constricted at base. There are two tolerably well-defined types of antennal structure, one having the sixth joint rather shorter than the fifth, the other with this joint greatly elongate, sometimes equalling the preceding three together. In the latter type the sixth joint is somewhat dilated within and bristling with erect setse like those beyond it ; in fact in the first type, the club — if the loose chain of peculiar flattened internally arcuate joints can be thus designated — begins with the seventh joint, and in the second with the sixth. I have made no use of these types of structure in classifying the species, as the character relating to the mes-epimera seems to be more important and less subject to sexual modification. The scutellum is present in all of our spe- cies, though very small and sometimes extremely minute ; it is invariably equilateral or nearly so. The basal stria of the elytra is never entire, as it frequently is in Bieocera. The following table may enable the reader to identify the forms in his cabinet, although there are probably a considerable number still to be discovered : — Mes-epimera extending one-half or more to the coxfe, always distinctly defined. Metasternum strongly though sparsely punctate throughout, the punctures extending also to the outer parts of the episterna repaildR Metasternum subirapunctate or only punctured in part. Body black, sometimes castaneous from immaturity. Larger species, never much under 2 mm. in length. Elytra sparsely but strongly punctate. Metasternum, between the middle and hind coxse, coarsely and strongly punctate COtlTexa Metasternum minutely and remotely punctate ; elytral punctures stronger; form a little more elongate-oval castaiiea. Elytra finely but much more closely punctate, the punctures almost twice as numerous as in coniexa puilCtlllata 524 Coleopterological Notices, V. Smaller species, seldom more than 1^ mm. in length. Elytra not paler at apex, except feebly and gradnally from diapha- neity Silt ma lis Elytra with a broad and rather distinctly defined pale apical margin. Larger, more broadly oval, the metasternum strongly punctured toward base termiiiata Small, narrowly oval, the metasternum minutely and scarcely visibly punctured evaiiescens Body pale rufo-testaceous throughout rii1>eilS Mes-epiniera very small, sometimes completely undefined, and the suture ob- literated ; species generally smaller, occasionally minute. Coxal plate of the first ventral segment shorter, not extending to the middle ; body more than 1 mm. in length. Body pale rufo-testaceous throughout I'Ufllla Body black, the elytral apex sometimes narrowly pale. Elytra finely but visibly punctate almost to the basal margin. Basal stria of the elytra extending outward beyond the middle of each ; larger species deseitorum Basal stria extremely abbreviated, scarcely extending at all beyond the outward flexure of the sutural stria ; size much smaller. iiiconspicua Elytra impunctate, except occasionally very obsoletely and indefinitely near the apex. Posterior elevated margin of the intermediate acetabula strongly rounded behind, extending posteriorly for more than one-fourth of the distance between the middle and hind coxje 0l)esilla Posterior marginal plate shorter and more broadly rounded. Post-coxal plate bordered by a transverse series of small but deep punctures ; fourth antennal joint much shorter than the fifth, three times as long as wide ; met-episterna wide, narrowed ante- riorly carolinae Post-coxal plate without a distinct marginal line of punctures ; fourth antennal joint longer and much more slender, fully four times as long as wide ; met-episterna narrower, parallel ; body slightly narrower, the elytra longer and the prothorax shorter. arkansnua Coxal plate of the first ventral large, extending to the middle of the seg- ment ; body 1 mm. or less iu length pusilla^ 1 The gender usually adopted for such words as Scaphisoma, Tyloderma and others, is the neuter, on the ground that the gender of the word in the Greek is neuter. It is evident, however, that as soon as a word is taken into the binomial nomenclature as the symbol of a genus, it immediately and by virtue thereof becomes Latin, whatever may be its derivation. As a genus in the binomial nomenclature, Scaphisoma is therefore a Latin word and should be given a gender corresponding with its Latin termination. It is manifestly Coleopterological Notices, V. 525 S. repanda, n. sp. — Rather broadly oval, polished, black, somewhat piceoiis beneath, the legs and anteniiffi pale ; integuments subglabrous, the decumbent hairs fine and very sparse ; head and pronotum impunctate ; elytra strongly, sparsely punctured throughout ; metasternura, the inner part of its parapleurse and the first ventral plate, except toward apex, strongly but not so coarsely, sparsely punctured. Head vertical, moderate in size ; eyes large, distant by twice their width ; aiitenn?e distant, as long as the head and pro- thorax, the third joint not twice as long as wide, barely one-half as long as the fourth, which is four times as long as wide and not quite as long as the fifth or sixth, the latt'^r equal, seventh longer, dilated and arcuate within, three times as long as wide, eighth much shorter and thinner, joints of club elongate, not much wider than the seventh. Proihorax three-fourths wider than long, the apex barely two-fifths as wide as the base, the median lobe broadly rounded ; basal angles distinctly produced and acute. Scutellum minute but distinct. E/ijira as long as wide, twice as long as the prothorax, a little wider at basal third than at base ; apices obliquely truncate, two-thirds as wide as the maximum width, the angles rather narrowly rounded ; sutural and marginal striae distinct, the basal obsolete at about the middle. Mes- epimera long, narrow, extending three-fifths to the coxae ; met-episterna wide, tlie suture fine and only moderately oblique. Legs slender ; hind tarsi about as long as the tibite. the basal joint scarcely as long as the next three. Length 1.7 mm. ; width 1.05 mm. Iowa ; Missouri ; Massachusetts. Readily known by the punctuation and by the fact that the usual post-co.Kal plate of the first ventral sediment is as completely oliso- lete as in Baeocera, the hind margin straight and anteriorly oblique outwardly. The size seems to be very uniform. S. COnvexa Say. — Journ. Ac. Phila., V, p. 183 ; Lee. : Proc. Ac. Phila., ISUO, p. 323. Broadl}^ oval, highly polished, black, the under surface, legs and antennae paler, rufous. Antennae long-, the third joint one-half longer than wide, enlarged at apex, scarcely one-half as long as the fourth, which is between three and four times as long- as wide; fifth but little longer; sixth and seventh subequal, much longer, nearly as long as the fourth and fifth together, the sixth feebly dilated within, the seventh more strongly and arcuatelv so; eighth shorter; club very elongate and slender, not wider than the seventh. impossible to modify a noun of one language by an adjective of another ; the combination of letters " Scaphisoma" in the name Scapldsoma mfvla, cannot therefore be Greek but must be Latin. Why we should maintain the Greek gender, or any other attribute of the symbol as a Greek word, it is diflicult to understand. 526 Coleopterological Notices, V. Prothorax fully three-fifths wider than long, very obsoletely punc- tulate. Scutellum distinct, equilateral. Elytra about three-fourths longer than the prothorax, widest near basal third, the sides very broadly, evenly arcuate ; surface stron.u^ly, remotely punctate, the basal stria beconiinesilla n. sp. — Broadly oval, strongly convex, highly polished, the elytra very obsoletely and remotely punctulate toward apex, black, the legs, abdomen and antennae paler. Head moderate: antennse slender, the third joint clavate, one-half as long as the fourth, the latter four times as long as wide, fifth as long as the third and fourth combined and subequal to the sixth. Prothorax two-thirds wider than long, the apex two-filths as wide as the base ; scutellar lobe rather strongly rounded at apex ; basal angles produced and acute. Scutellum extremely minute. Ehjira scarcely as long as wide, three- fourths longer than the prothorax, somtr'what wider near basal third than at base, the sides evenly arcuate ; apex oblique, narrow, barely two-thirds of the maximum width ; angles narrowly rounded ; sutural stria rather fine but deep, the basal not extending beyond the basal aicuation of the sutural. Mes-epimera very small, the sutnre almost obsolete ; met-episternal suture tine, oblique ; post-coxal plate of the metasternum extending posteriorly almost one-third of the length ; post-coxal plate of the first ventral very short, broadly rounded, with a transverse series of coarse punctures along its edge. Posterior tarsi about as long as the tibije, the fii'st joint as long as the next two. Length 1.5-1.6 mm. ; width 0.95-1.05 mm. Florida. This species may be recognized at once by its broad form and subimpunctate surface. S. carolinae n. sp. — Rather broadly oval, highly polished, black and impunctate ; abdomen more or less pale ; antennte and legs rufous. Head vertical ; eyes modeiate, distant ; antennae nearly as long as the head and prothorax, third joint triangular, only slightly longer than wide, not quite one-half as long as the fourth, the latter three times as long as wide, fifth as long as the third and fourth together and somewhat longer than the sixth. Prothorax rather short, three-fourths wider than long ; apex a little less than 532 Coleoplerological Notices, V. one-half as wide as tlie base ; scutellar lobe small, rather strongly rounded ; basal angles acnte, moderately produced and somewhat detlexed. Scutelluni small but distinct. Elytra not quite as long as wide, a little less than twice as long as the prothorax, slightly wider from basal third to fourth than at base ; sides evenly rounded ; oblique apex three-fourths of the maximum width ; angles distinctly rounded ; sutural stria deep, the basal obsolete. Mes-epimera very small, the suture obsolete ; met-episternal suture coarse, feebly oblique, the episterna broad throughout. Post-coxal plate of the meta- sternum very short, broadly rounded, bordered by a series of deep conspicuous punctures extending outward along the anterior margin of the metasternum almost to the parapleurae ; post-coxal plate of the first ventral extremely short. Length 1.25 mm. ; width 0.8 mm. North Carolina (Asheville). Resembles the preceding very much, but differs conspicuously in the forni and extent of the elevated plate behind the middle aceta- bula, in the much less minute scutellum and smaller size. S. arkaiisana n. sp. — Narrowly oval, impunctate, highly polished, black, the elytral apex not paler except from diaphaneity ; under surface rufo-piceous ; antennse blackish, the first six joints and the legs throughout testaceous. Head small, the eyes separated by a little less than twice their widtli ; antennae slender, one-half as long as the body, third joint not twice as long as wide and one-third as long as the fourth, the latter a little shorter than the fifth but correspondingly longer tlian the sixth, seventh distinctly wider and slightly longer than the fifth, eighth scarcely larger than the sixth, last three joints moderately compressed. Prothorax three-fourths wider than long, the apex arcuate and about one-half as wide as the base ; sides evenly arcuate ; basal angles produced and acute ; median lobe distinct, rounded. Scutellum distinct but small, perfectly equilateral. Elytra as long as wide, twice as long as the prothorax and, at about basal fourth, a little wider ; sides evenly arcuate ; apex three-fifths of the discal width ; outer angles moderately rounded ; sutural stria extending only to the base, the basal stria obsolete. Leys slender ; hind tarsi wanting in the type. Length 1.25 mm. ; width 0.75 mm. Arkansas. A sing'le specimen, kindly communicated by Mr. H. C. Fall. It is closely allied to carolinse, but differs in certain well defined struc- tural features referred to ia the table. S. pusilla Lee— Proc. Ac. Nat. Sci., Phila., 1860, p. 323. This species can always be recognized by its very minute size and generally by the coloration, the elytra being rufous in apical half; two specimens before me depart however in being pale testa- ceous throughout, and two others in being black with the apex only Coleopterological Notices, V. 533 paler. There seems to be considerable variation also in the size of the post-coxal plate of the first ventral, which generally attains the middle of the segment, but in one specimen it plainly does not extend so far and in another goes a little beyond the middle. The antennae differ from those of any other species in being shorter and stouter, the outer joints shorter and less asymmetric than usual, with the large seventh joint rather wider than any one of the outer three; first two joints as long as the next four; third very small, triangular; fourth small, barely twice as long as wide; fifth fully as long as the preceding two combined; sixth unusually small, securiform, scarcely twice as long as wide, about three-fourths as long as the fifth and one-half as long and wide as the seventh. Length 0.15-1.0 mm. ; width 0.5-0.7 mm. Rhode Island to Lake Superior, Iowa and the Carolinas. It is possible that several very closely allied species may be indicated by the above described color variations, but I am unable at present to find any really decisive structural differences. HISTERID.E. But little progress has been made in the systematic treatment of this family since the completion of the superb monograph of Mar- seul, and but few American species have been made known since the synopsis published by Dr. Horn, now somewhat more than twenty years ago. A considerable number of new forms have been accumulating however, principally through recent collecting in Cali- fornia and parts adjacent, and, in rearranging my cabinet, it seemed desirable that these should be described. A modification of the present classification would seem to be desirable in order to better determine the positions of the two aber- rant genera Bacanius and Plegaderus, Bacanius is evidently out of place at present, although some affinity with Abrainis may possi- bly be indicated by the transverse chain of pronotal punctures in B. rhomhophorus, a feature which appears to be essentially charac- teristic of Abrseus and Acritus. By placing Bacanius immediately after Anapleus, and then reversing the order of genera in the Saprini, so as to bring AbrsBus and Acritus at the head, this diffi- culty can however be readily overcome. According to Mr. Lewis Tribalus californicus Horn, is to be referred to Stictostix Mars. 534 Coleopferological Notices, V. HOLOLEPTA Payk. The species described below is allied to j^rinceps Lee, and is therefore assignable to the subgenus Leionota. Frivceps appa- renth' cannot be the same as yucateca Mars, The sexual characters in the former are very feeble, as readily observable in the large series before me, the male being broader and shorter than the female, with longer mandibles and broader propygidium, but the groove along the lateral margin of the pronotum is almost identical in the two sexes.' H. vei'llicis n. sp. — Rather narrow, feebly, evenly convex, highly pol- ished. Head without trace of frontal striae, the lateral striae near the eyes very short, basal, the surface behind them coarsely punctate ; mandibles short, stout, not quite as long as the head, strongly arcuate and acute at tip ; mentum broadly, feebly concave, even, finely sparsely and evenly punctate, deeply, subangularly emarginate ; triangular gular impression almost obso- lete. Proi/iorax four-filths wider than long, the sides broadly arcuate and convergent anteriorly from the middle, becoming almost parallel and straight in basal half ; lateral groove rather fine but deep, slightly dilated at apex ; inflexed along the basal margin to lateral sixth ; disk with a fine median stria in basal two-fifths, narrowly and sparsely punctate along the lateral stria especially toward base. Scutellum very small, equilateral. Elytra equal in width to the prothorax, parallel, the suture less than one-third longer ; apical sinuation deep, rounded ; subhumeral stria dilated, deep, attaining neither base nor apex ; first dorsal deep and coarse, arcuate, scarcely attaining basal third, coarsely double at base, the humeri also with a short basal stria exter- nally ; second dorsal fine but deep, interrupted at basal fourth, the apical part beginning rather before the point opposite the termination of the first dorsal, and continuing almost to the apex. Propygidium rather sparsely but very coarsely, variolately punctate laterally, the punctate areas joined along the posterior margin by some very small sparse and feeble punctures ; pygi- dium coarsely deeply and very densely cribrate. Anterior tibise 4-dentate, the basal tooth very broadly angulate and feeble, the others strong biit not very acute ; posterior tibia; with tliree large acute and spiniform teeth. Pos- terior half of the presternum triangular in form, tlie hind margin evenly rounded ; apical half in the form of a rather narrow, transversely rounded and parallel ridge, the apex obtusely rounded. Length (exclusive of mandi- bles) 11.5 mm. ; width 5.4 mm. Arizona. There appears to be no Mexican species with which this can be confounded, and it is widely distinct from any form hitherto de- 1 The measurements of length include the entire body and head, except when otherwise stated. Coleopterological Notices, V. 535 scribed from the United States. The type seems to be a female. This species is much smaller and narrower than princeps. OMAI.ODEIS Ericlis. Of this interesting genus we have three species which may be distinguished as follows : — Posterior tibiae with three external spines ; punctures of the pygidium and propygidium not interrupted heliind texailllS Mars. Posterior tibiae with four spines. Propygidium coarsely punctate only toward the sides, the two areas of punctuation feebly united at apical fourth by a transverse band composed of very fine feeble punctures ; pygidium coarsely punctured throughout except in anterior third ; elytra without a margiual stria along the apex. lubricaiis n. sp. Propygidium coarsely punctate, the punctures becoming remote near the center of the disk, minute along the apex ; pygidium coarsely punctate, the punctures fine along the anterior margin and almost obliterated toward apex ; elytra with a marginal stria along the apex. vitrcoliicens n. sp. Texanus is unknown to me, but may be readily identified by the structure of the hind tibi-ae ; it is much narrower and more elon- gate than lubricans or grossus. The species are all intensely black, very highly polished and feebly sculptured. O. Itllbricans. — Broadly oval, the extremely minute punctulation ratlier sparse but dense and distinct near the scutellum. Head concave in the middle, finely punctulate, the marginal stria subhesagonal, feebly reentrant in the middle, subeutire. Proi/iorax not quite twice as wide as long, the well marked and deflexed apical angles separated by two-fifths of the basal width ; sides oblique, nearly straight, not distinctly sinuate near the middle ; margi- nal stria distinct at apex, very faint at base ; lateral deep, entire ; disk with a small ante-scutellar puncture, finely and not very densely punctured along the sides, almost equally from apex to base. Scutellum with a discal punc- ture. Elijtra a little more than one-half longer, and, at the middle, but slightly wider than the prothorax ; striae fine, that of the flank beginning slightly behind the humeri and becoming obsolete and broken toward apex ; humeral excessively fine, extending to basal third ; subhumeral arcuate, beginning at the middle and extending to the apex; first dorsal long but not attaining base or apex; second not attaining the base and broken into an uneven series of punctures behind ; third extending not quite to the middle. Propygidium not impressed. Frosternum very broadly rounded at apex and extremely feebly margined, rounded and slightly dilated behind ; mesosternum very short, broadly, deeply sinuate, the margiual stria somewhat narrowly interrupted. Anterior tibiae strongly 4-dentale, the intermediate with three strong teeth 536 Coleopterological Notices, V. and two small subbasal denticles ; posterior with four teeth, of which the one nearest the base is much the smallest. Length (median line of pi-onotum and elytra) 9.0 mm. ; width 7.8 nnn. Arizona fSta. Rita Mts.). Mr. Wickhara. Although allied to texanus and grossus, this species is distinct in several important characters. It is much broiider than texaynis, and ^ros«ws differs radically in the disposition and extent. of the punc- tured areas of the pygidium and propygidium. Judging by the description and figures, it seems impossible to consider texanus and (j?-ossi(S identical, as surmised by Dr. LeConte ; nor is the habitat of texanus necessarily open to doubt; texanus is not mentioned at all by Mr. Lewis in treating of the Mexican species. O. vitreolucens. — Broadly oval, excessively finely punctulate through- out, the punctures especially evident and closer on the elytra toward the scutellura. Head broadly impressed along the middle throughout the length, finely, closely punctate, the punctures becoming stronger at base; marginal stria only present at the sides along the eyes ; antennae with the club piceous. PrutJiorax nearly twice as wide as long, the apical angles distant by scarcely more than two-fifths of the basal width ; base oblique but scarcely sinuate laterally ; sides oblique, nearly straight, rounded anteriorly, not distinctly sinuate near the middle ; marginal stria evident only near the apical angles ; lateral stria not quite entire, very close to the edge, deep near the apical angles ; disk strongly, densely punctate near the lateral stria, the punctured area becoming narrower and evanescent to the base, broadest at apex ; aute- scutellar puncture small. Scutellum equilateral, not deeply impressed. Elytra one-half longer, and, before the middle, distinctly wider than the prothorax ; striae very fine ; flanks with a strong sigmoid stria from the humeri extending unbroken along the apex to the suture ; oblique humeral stria straight ; sub- humeral strongly arcuate, not extending to the middle and approaching close to the marginal at apex ; first dorsal subentire ; second nearly entire, abbre- viated at base and consisting of an uneven series of punctures toward apex ; third beginning at the basal margin, not attaining the middle. Prosternvm with a short stria before each coxa, feebly dilated and broadly rounded behind, the apical lobe broadly rounded ; mesosternum short, broadly, roundly sinu- ate, the transverse stria very widely interrupted. Anterior and posterior tibiae 4-dentate, the intermediate 5-dentate. Length (median line of protho- rax and elytra) 7 0 mm. ; width 6.0 mm. Southern Florida. Mr. Jiilich. This species has been identified as klugi Mars., but the latter is undoubtedly different, although allied in having a transverse mar- ginal stria at the apex of the elytra. In klugi the frontal stria is entire and semi-hexagonal, and the posterior tibise are 3-deniate externally, while in the present species the frontal stria is only Coleopterological Notices, V. 537 repre?ented by two oblique grooves at the sides not extending beyond the eyes, and there are four distinct tibial denticles, of which the basal is however small. PSILOSCELIS Mars. The following species belongs- near 7-ej)leta Lee, but is smaller and more depressed. P. corrosa n. sp. — Oblong, depressed, piceous-black, moderately shining, densely punctate, the punctures large variolate and intermingled with others which are minute but deep, sparse toward the elytral suture but dense else- where, subcontinent on the elytra and almost obliterating the striae, rather fine beneath. Head transverse, densely, rugosely punctate, without a distinct marginal stria, the antero-lateral angles acute ; mandibles stout, porrect. Prothorax four-fifths wider than long, the sides very feebly convergent from base to apex and feebly arcuate ; marginal stria deep and distinct, not attain- ing the apex ; lateral stria coarse, only visible in basal third where it is very close to the marginal, represented thence anteriorly only by feebly defined and detached fragments ; disk densely and very deeply punctate even toward the middle. Scutellum very small, smooth and polished. Elytra not quite as long as wide, one-half longer than the prothorax and scarcely at all wider ; sides subparallel, feebly arcuate; striae coarse but shallow and not well de- fined ; outer subhumeral represented by a short longitudinal and outwardly arcuate stria in basal third, not attaining the base ; inner subhumeral entire; first and second dorsals entire, the third obliterated toward base ; fourth only visible near the apex. PropiiyicUum large, coarsely but not very densely punc- tate, the punctures rounded and umbilicate ; pygidium rather small, strongly and closely punctate. Prosternum not striate, the lobe long, deflexed, strongly rounded, margined ; disk behind the lobe with two distant punctures. Meso- sternum with a small feeble median emargination ; marginal stria subentire. Legs stout ; anterior tibiae broadly triangular, with four broad external teeth a)ranged in two pairs ; posterior tibiae parallel, very strongly compressed, the external edge thin and with a single series of four or five distant spinules. Length 4.3 mm. ; width 2.4 mm. Wyoming (Cheyenne). The antennal cavities are deep and at some distance behind the apical angles, fully exposed, and not at all concealed by the anterior margin of the prosternum. This interesting species is probably myrmecophilous, but no note to this effect accompanies the unique specimen, for which I am indebted to its discoverer, Mr. Hugo Soltau. AkxXals N. Y. Acad. Sci., VII, Dec. 1893.— 35 538 Coleopterological Notices, V. HISTER Linne. In this genus I find a remarkable and puzzling inconstancy in a structural character, which ought apparently to be a very good one — the eniargination of the prosternal lobe. For example in two other- wise complete]}' similar specimens of depiirator before me, both bearing the same label, the lobe is broadly subtruncate at apex, with the angles broadly and continuously rounded in one, while in the other it is visibly emarginate, with the angles acute, prominent and dentiform. Possibly these differences may be sexual, but until their origin is determined it will be unsafe to separate species upon them, unless sustained by decided divergencies in other parts of the body.^ In Hister the elytra have nine strias, besides the one or two sulci of the inflexed flanks, but several are more or less abbreviated or radically modified, so that the apparent number is much less. The first two from the suture are generally greatly abbreviated in frout, the next four usually more or less nearly entire, the seventh is fre- quently represented by an obsolete subapical line of punctures which is rarely striiform,^ the eighth by the outer subhumeral stria, some- times obsolete or otherwise modified, and the ninth by a series of small, distantly spaced punctures along the crest of the lateral con- vexity. If this sequence be borne in mind, it will always be easy to understand the detached striae and series of punctures met with in the various species. For instance in abbreviatus, the basal part of the coarse lateral stria is a basal remnant of the outer subhumeral, the apical part being the inner subhumeral. Besides the oblique humeral stria, there is in most species a short subtransverse outer humeral ; it is impossible to state the exact significance of either of ^ Since this was written I have examined good series of depurator and incertus and find that of nine specimens of the former, seven have the presternum emarginate, and two broadly rounded. Of twelve examples of incertiis, six have the prosternal lobe narrowly and evenly rounded, four broadly subtrun- cate with rounded angles, and two emarginate with acute angles. 2 The oblique inner humeral is certainly not the basal part of this inner subhumeral as stated by Dr. Horn (Proc. Am. Phil. Soc, XIII, p. 287), the true base of the latter being sometimes seen as a short stria near the base of the former, as remarked under Epierus cornutus. In Psiloscelis repleta Lee, the inner subhumeral is entire and similar to the first dorsal ; it crosses tlie oblique humeral stria near its middle point and attains the basal margin, the striffi not being at all distorted at the -point of crossing. Coleopterological Notices, V. 539 these strise. The lateral line of fine punctures seems to become obsolete in depurator and its allies, and in that group the two or three fine marginal punctures of the pronotum are also obsolete. The meaning of these singular punctures is diflScult to state, unless they be the remains of tactilo-setigerous pores. The following species are assigned for convenience to the groups adopted by Dr. Horn : — Group Areuatus. Margins of the prothorax fimbriate ; anterior tihise dentate. H. seminiljer n. sp. — Stout, oblong and convex, resembling seUatus. Head minutely, obsoletely punctulate, tbe frontal stria entire ; mandibles minutely, sparsely punctulate. Prothorax fully twice as wide as long ; sides moderately convergent, broadly, almost evenly arcuate from base to apex ; marginal stria fine but distinct, entire ; outer lateral entire, inflexed at api'x, receding from tbe edge bebind ; inner lateral strong, nearly entire, somewbat uneven, tbe space between tbe two witli one or two sbort strides anteriorly ; disk subimpunctate, witli a sbort deep stria before tbe scutellum. Scutellum equilateral, feebly impressed. Elytra ratber less tban one-balf longer tban the prothorax, and, at basal third, quite distinctly wider ; apex obliquely arcuate, four-fifths as wide as the base ; inflexed flanks coarsely bisulcate ; outer subhumeral stria obsolete behind, but represented by a sbort deep stria near the extremity of the oblique humeral, which is fine ; inner subhumeral feebly indicated by a few subobsolete punctures near the first dorsal ; first three dorsals entire ; fourth represented by a short distinct stria at base and a few subobsolete punctures at apex ; fifth and sutural entirely wanting, sometimes rudimentary near the apex. Prnpi/yidium remotely coarsely and variolately punctate toward tbe sides, subimpunctate toward the middle be- hind ; pygidium sparsely, feebly punctate, the punctures becoming larger and clos r but shallow near the anterior angles. Prosternal lobe finely margined ; posterior process spatuliform, received in the deep median emargination of the m«sosternum. Anterior tibiae strongly bidentate, the apical tooth feebly bilobed ; posterior confusedly spinose externally, remotely so toward base. Length 6.0 mm. ; width 4.5 mm. Utah (southwestern). Mr. Weidt. Allied closely to sellatas, but differing in the form of the marginal stria of the mesosternura, which in «t;//a^«;sevenly follows the rounded outline of the median emargination ; in the present species it is pos- teriorly and acutely angulate at the emargination ; it also differs in its much sparser and finer pygidial sculpture especially along the anterior margin, and in the presence of a distinct impressed appen- 540 Coleopterological Notices, V. dage of the outer subhumeral stria near the end of the oblique humeral, there being no vestige of this in sellalus. H. SCUlpticauda n. sp. — Moderately broad, convex, resembling iilld in color and form. Uead minutely, sparsely punctate ; frontal stria entire, transverse at apex ; mandibles finely but deeply, extremely densely and con- spicuously punctate. Prothorax not quite twice as wide as long, the sides moderately convergent, broadly, nearly evenly arcuate from base to apex ; marginal stria fine, entire ; outer lateral entire, arcuate at apex ; inner almost entire, nearly straight, slightly approaching the outer toward base ; disk minutely, sparsely punctulate, the punctures more distinct near the basal angles ; there is a small puncture just within the posterior extremity of the inner stria, three minute and remote punctures along the fine marginal stria and a short deep stria before the scutellum, the latter equilateral and unim- pressed. Elytra one-third longer and but slightly wider than the prothorax, widest very near the base, the sides feebly convergent, broadly and feebly arcuate throughout ; apex oblique, broadly rounded ; inflexed flanks bisul- cate ; punctures of the lateral series extremely minute and remote ; outer subhumeral obsolete behind, represented by a short arcuate stria near the end of the oblique humeral ; inner subhumeral represented by a series of punctures close to the first dorsal in apical third ; first three dorsals entire, moderately coarse ; fourth and fifth ccmpletely wanting ; sutural deep and distinct from basal thiid to apical fifth. Propygidium extremely coarsely, deeply but variolately punctate, the punctures mingled with minute punc- tules ; pygidium strongly, rather closely punctate, more finely so toward apex. Prosternal lobe broadly, evenly rounded, finely but strongly margined ; posterior process dilated ; mesosternum long, the emargination deep, broadly sinuate ; marginal stria entire ; sides strongly convergent from the base. Anterior tibise strongly bidentate ; posterior with two rather even external series of spinules. Length 6.5 mm. ; width 4.4 mm. New Mexico (Fort Wingate). This species is allied to instratus and vlkei, but differs in the minutely, very densely punctate mandibles and coarse sculpture of the pygidia ; the propygidial punctures are oval, more dense and even in distribution than in idkei, generally separated by less than their own dimensions, and are coarser than in any other species of Hister known to me. The outer pronotal stria is more distant from the margin than in either of the species mentioned. The three small punctures along the marginal stria are present also in inst7'atus, ulkei and other species, and seem to be very constant. Group Merdarius. Sides of the prothorax not ciliate ; mesosternum emarginate; outer subhumeral stria entire; elytra with four subentire discal Coleopterological Notices, V. 541 strice, the pronotum with two entire or subentire striae, the outer distant from the margin. This group contains a number of species, which can be distin- guished among themselves as follows: — Anterior tibiae arcuate externally, the apical tooth smaller and distinctly less prominent than the precedin^r. Upper surface finely but distinctly and evenly punctured throughout. liarrisi Kby. Upper surface subimpunctate, polished. Sutural stria present in apical half more or less, either continuously or as a series of punctures. Mesosternal emargination broad and extremely feeble ; size small : front with an impressed puncture stygicilS Lee. Mesosternal emargination narrower, distinct; size larger ; front flat. Narrowly oval ; pygidium fi__uely, sparsely punctate ; piosternal lobe narrowly and evenly rounded illteri'liptlis Beauv. Broadly oval, the pygidium strongly and very densely punctate; prosternal lobe broadly truncate and subsinuate at tip. Tii'giiiiae n. sp. Sutural stria very short, apical ; prosternal lobe rounded, margined, very coarsely punctured laterally ; pygidium strongly but not very densely punctate; body broadly suboblong. New Jersey to Louisiana. i III 111 lilt is Er. Anterior tibise not arcuate, the apical tooth as prominent as the preceding. Fiontal stria distinct, sometimes interrupted in the middle; outer thoracic stria entire. Piopygidium coarsely sparsely and more or less unevenly punctate, the interspaces smooth and impunctate ...lUerdai'illS Hoffm. Propygidium much more finely evenly and densely punctate, the punc- tures intermingled with others which are minute but deep and dis- tinct. Anterior tibije broad, coarsely and strongly 5-dentate plllto n. sp. Anterior tibiae narrower, much more finely and closely pluridentate ; species much smaller fractifi'OllS n. sp. P'lontal stria obsolete, represented only by feeble and unevenly discon- nected traces toward the sides ; outer thoracic stria abbreviated behind the middle IllomiOIl n. sp. The above species are all intensely black throughout, the legs sometimes rufescent. H. Tirgiliiae. — Broadly oval, highly- polished, the minute punctules extremely feeble and sparse. Head rather more distinctly punctulate, the frontal stria not reentrant, narrowly and more or less completely interrupted in the middle. Prothorax twice as wide as long, the sides strongly convergent, broadly and rather strongly arcuate from base to apex ; fine marginal stria 542 Goleopterological Notices, V. entire, with two small and very distant internal punctures ; outer lateral stria subentire, strongly Looked at apex ; inner strong, feebly sigmoid, gener- ally somewhat abbreviated before the base ; ante-scutellar stria sliort but deep. Scutellum unimpressed, small, equilateral. Elijtra one-half longer than the prothorax, and, at basal third, distinctly wider; sides arcuate; apex feebly oblique, five-sixths as wide as the base ; inllexed flanks coarsely, sparsely punctured, with a single fine, nearly entire stria ; strise rather coarse, the snbhnmeral slightly abbreviated at base ; ninth stria composed of small remote punctures along the convex flanks ; inner subbumeral composed of more closely spaced punctures between the subbumeral and first dorsal, nearer to the former ; oblique humeral very fine and feeble; first four dorsals sub- entire; fifth short, arcuate, occupying apical third; sutural represented by a series of coarse punctures from the apex to about the middle. Pro/ii/c/kliuia coarsely evenly and rather closely punctate throughout, the interspaces minutely, sparsely punctate ; pygidium strongly, densely punctate. Pro- sternal lobe truncato-sinuate, with broadly rounded angles, finely margined, deeply but not very coarsely punctate laterally. Mesosternum deeply, broadly sinuate in median third, the marginal stria entire. Anterior tibije rather closely 5-dentate, sometimes with a minute sixth denticle basally. Length 5.5-6.5 mm. ; width 4.2-5.0 mm. Virginia (Fredericksburg). In view of the variations noticed in dppurator, I am unable to estimate the true value of the truncate prosternal lobe in this spe- cies ; it is however perfectly similar in the three specimens before me. The two minute punctures along the fine marginal stria of the pronotum are constant in size and position in these types. H. plllto. — Rather narrowly oval, convex, polished, the punctules remote, scarcely stronger on the head but becoming distinct punctures toward the inner stria and basal angles of the prothorax. Head feebly impressed at the middle of the epistoraa, the frontal stria distinct, subentire, with an acutely reentrant angle at the middle. P/W/oRiar' quite distinctly less than twice as wide as long ; sides moderately convergent and broadly arcuate from base to apex ; fine marginal stria entire, with two minute remote internal punctures ; outer lateral stria straight, subentire, hooked at apex ; inner subentire, coarse, slightly uneven ; short ante-«cutellar stria very deep. Elytra nearly as long as widej one-half longer than the prothorax, and, before the middle, slightly wider ; sides feebly, evenly arcuate ; apex distinctly oblique and nairower than the base ; inflexed flanks concave behind basal third, coarsely and rugosely punctate ; lateral convexity with an entire series of even remote punctures; subbumeral nearly entire, the series of punctures between it and the first dorsal almost completely obsolete ; humeral stria distinct ; there is also a short basal stria external to this and the usual internally oblique striole from the humeral angles ; first three dorsals strong, entire ; fourth abbreviated more or less l)efore the middle ; fifth represented hy a few subapical punctures ; sutural short, subapical. Propygldium and pygidium densely evenly and not Coleopterological Notices, V. 543 very coarsely punctate. Prosternal lobe narrowly rouuded, margined, finely but densely and deeply punctate laterally ; mesosternum abruptly deeply and circularly emarginate in rather more than median third ; stria entire. Ante- rior tibiae very broad, 5-dentate externally, the apical tooth acute and simple but with a small approximate denticle on the truncate apex. Length 6.6-8.0 mm. ; width 4.7—5.1 mm. Ore,^on ; Kansas. The specimen from Kansas has the pronotum subimpnnctate near the striae and basal angles, but does not appear to differ otherwise from the Oregon types. H. fractifroiis. — Somewhat narrowly oblong-oval, moderately convex, very highly polished, the minute punctules very sparse, not much stronger or denser toward the sides of the pronotum. Head a little more distinctly punctulate, the frontal stria narrowly interrupted in the middle. Pmthorax barely twice as wide as long, the sides moderately convergent, broadly and feebly arcuate from base to apex ; marginal stria fine, entire, with two minute interiial punctures ; outer lateral straight, almost entire ; inner sinuate at the middle, subentire ; ante-scutellar stria feeble and extremely short. Elytra not quite one-half longer than the prothorax, and, at basal third, where the sides are somewhat more strongly rounded, slightly wider; apex broadly rounded, feebly oblique; inflexed flanks fiat, strongly but not ver}' coarsely or densely punctate ; outer series of remote punctures distinct, entire ; inner Series between the subhumeral and first dorsal more approximate, distinct, extending to basal third ; outer humeral fine, short, subtransverse ; inner humeral fine, oblique ; subhumeral strong, not quite attaining the base ; first four dorsals entire, strong, the fourth only slightly abbreviated at base ; fifth and sutural very short, apical. Pjgidia rather finely evenly and very closely punctate. Prosternal lobe broadly rounded, finely and feebly margined, finely punctate ; mesosternum abruptly and circularly emarginate in rather more than median third, the stria entire. Anterior tibiae with an external series of about seven small, closely placed teeth, formed principally by the short coarse spinules ; posterior with an outer series of slender spinules and an inner series of stiff setse. Length 5.5 mm. ; width 3.8 mm. California (Lake Tahoe) ; Oregon A variety of this species with shorter prothorax, much more widely interrupted frontal stria, and with slight but marked divergence in the serrulation of the anterior tibia3, was recently taken by Mr. Wickham in Vancouver. It may possibly be dis- tinct, but I have at present only a single specimen. H. inorinoil. — Stout, oblong-oval, convex, very highly polished, the punctules extremely minute, sparse, coarser and distinct near the posterior limit of the inner thoracic stria. Head scarcely more distinctly punctulate, flat, the occiput remotely bifoveate near the thoracic edge ; epistoma very 544 Coleopterological Notices, V. broadly, feebly impressed ; stria obsolete. Prothorax nearly twice as wide as long, the sides moderately convergent from the base, more convergent and rounded near the apex ; fine maiginal stria abbreviated behind the middle, the two marginal punctures distinct ; outer lateral not entire ; inner slightly uneven, subentire ; ante scutellar stria well developed. Elytra one-half longer than the prothorax, and, at basal third, where the sides are slightly promi- nent, distinctly wider ; apex broadly rounded, feebly oblique ; inflexed flanks flattened, uneven, strongly but not densely punctate ; outer series of punc- tures distinct, the interstrial row distinct ; outer humeral very oblique, with an appendage; inner hnmeral distinct, not extending to basal third; sub- humeral not extending to the base, with a short oblique inferior appendage at the basal end ; first three dorsals strong, entire ; fourth obsolete in basal half; fifth and sutural represented by disconnected subapical punctures ; there are also several short uneven oblique strife along the apex of each elytron, of ■which one between the first and second dorsals is especially distinct. Pijf/iclia densely evenly and not very coarsely punctate. Prosternal lobe broadly rounded, strongly margined, finely, closely punctured ; niesosternum broadly sinuate in median third, the stria deep and entire. Anterior tibiae with four strong, widely spaced teeth, of which the apical is bifid, and two minute sub- basal denticles ; posterior with series of spinules on the acute edge, the outer series feeble, irregular and in great part discal. Length 7.5 mm. ; width 5.3 mm. Utah. This appears to be quite an isolated species of large size ; it forms a satisfactory transition to the next group. Group Foedatus. This group is really a part of the preceding, the characters throughout being similar, except that the external of the lateral thoracic striae is more or less decidedly abbreviated, being some- times altogether wanting ; the extent of this stria is however a variable feature, and it is always more or less inconstant even within specific limits. The species are all intense black and pol- ished, and generally smaller than the allies of merdarivi< ; they are also more closely allied among themselves. Those known at present may be thus distinguished : — Outer lateral stria of the pronotum distinct, though much abbreviated. Sutural stria generally longer than the fifth dorsal and attaining the middle. Form narrowly oval, the punctures of the propygidium coarse and strongly umbilicate Iinibilicatiis n sp. Form broadly oval, the propygidial punctures fine and very dense ; elytral striae much coarser foedafus Lee. Coleopterological Notices, V. 545 Sutural stria generally short, equal to the fifth dorsal and not attaining the middle. Form broadly oval, the inner lateral stria of the pronotnm \ery hroadly arcuate at apex lllld^OllicilS n. sp. Form narrowly oval, the inner stria strong and narrowly arcuate at apex ; propygidial punctures fine even and extremely dense. iinibrosiis n. sp. Outer lateral stria completely obsolete, or represented by a few small discon- nected punctures anteriorly. Elytra with four entire dorsal stride, the fourth inwardly arcuate at base ; form broadly oval Illiiciis n. sp. Elytra with three entire dorsal striie, the fourth more or less abbreviated at base. Form broadly oval, the pronotum punctate toward the lateral stria, the space between tlie stria and the lateral edges more or less convex. Fourth dorsal stria abbi'eviated before the middle. iiiariKinicollis Lee. Fourth dorsal very nearly attaining the base cogliatlis Lee. Form oblong, subparallel, the pronotnm subimpunctate tovvard tlie lateral stria, the latter more distant from the edge, the enclosed space flatter ; fine marginal stria entire and inflexed at base reniotus Lee. The characters of marginicoUis are taken from published descrip- tions, but the fine mar^^inal stria of the pronotum is probably similar to that of cognotNS, where it is greatly abbreviated and very diiferent from that of reviotvs ; fcedatus probably does not extend to the Pacific Coast, but is replaced there by the more narrowly oblong' « vmbrosus. I have taken remotus at San Francisco. H. lllllbilicatllS. — Narrowly oval, the sides evenly arcuate ; minute punctules feeble, only slightly more evident toward the sides of the pronotum. Head even, not impressed, obsoletely punctulate, the frontal stria entire, transverse at apex. Prothorax not quite twice as wide as long, the sides strongly convergent and almost evenly but feebly arcuate ; fine marginal stria abbreviated at tlie middle, tlie marginal punctures almost obsolete; outer lateral stria greatly abbreviated ; inner strong, more or less abbreviated at base; ante-scutellar stria very small, feeble. Ehjtra one-half longer than the prothorax, and, before the middle, distinctly wider, the sides evenly arcuate; apex rather strongly oblique, feebly rounded ; inliexed flanks con- cave, scarcely punctate, finely unistriate ; marginal series of punctures feeble, not e'xtending before the middle, the interstrial series feeble ; subhumeral stria subentire, with an oblique inferior basal appendage ; outer humeral fine ; inner extending to basal fourth ; dorsals moderately coarse, the first three entire ; fourth slightly abbreviated at base ; fifth present in apical third, the sutural in about apical half. Propygidinm coarsely, closely punctate, the pygidium less coarsely but extremely densely and polygonally cribrate ; 546 Coleopierological Notices, V. all tlie punctures strongly umbilicate. Prosternal lobe finely but distinctly marginod, narrowly rounded ; mesosternum feebly but abruptly and circularly emarginate in median third, the stria entire. Anterior tibije with five small acute teeth, the apical double. Length 4.4-5.5 mm. ; width 2.9-3.4 mm. California (Marin Co.). In one of the two specimens before me the outer thoracic stria is only a short straight line in apical fourth, not arcuate at apex; in the other it extends to, or a little beyond, the middle and is in- wardly arcuate at apex ; there is however no other perceptible difference, except in size and in the fact that the first mentioned has the mesosternal stria imperfectly interrupted in the middle. Another specimen, taken at San Francisco, is almost similar but has the punctures of the propygidium still coarser, less umbilicate and very noticeably less dense, in fact rather sparse, and the sutural stria shorter. H. lllldsonicus. — Broadly oval, Convex, the minute punctules extremely feeble and sparse, becoming distinct punctures toward the apices of the elytra and very near the deep pronotal stria. Head obsoletelj- punctulate, feebly convex, unimpressed, the frontal stria deep and coarse, entire but somewhat uneven, feebly reentrant at apex. Piothorax twice as wide as long, the sides strongly convergent, strongly, almost evenly arcuate from base to apex, the fine marginal stria entire; two marginal punctures distinct; outer lateral stria straight, extending almost to the middle, hooked at apex ; inner coarse and subentire, nearly even, feebly crenulate along the apex; ante-scutellar stria very short but coarse. Elytra distinctly wider than lon^, about one- half longer than the prothorax, at or just before the middle a little wider; sides broadly, evenly arcuate ; inflexed flanks unevenly punctate, unevenly unistriate ; punctures of the lateral series fine, the interstrial series almost obsolete ; outer humeral feeble, subtransverse ; inner feeble, deeper at base ; subhunieral strong, punctulate, subentire, with a transverse inner basal appendage and another oblique and inferior; dorsals coarse, subpunctulate, the first three entire ; fourth slightly abbreviated at base; fifth and sutural equal and apical. Propygidium coarsely deeply densely and evenly punctate, the pygidinm more finely but deeply, very densely so. Prosternal lobe evenly rounded, strongly margined, coarsely punctate laterally ; mesosternum trun- cate, broadly, feebly emarginate in the middle, the stria deep close and entire, subpunctate. Anterior tibife arcuate externally, with about six small serri- form teeth, principally formed by the short stout spinules ; posterior with two even series of slender spines, the inner setiform. Length 6.0 mm. ; width 4.7 mm. New York. Somewhat resembles /b^tZa/i/s, but readily distinguishable by its larger size, more broadly arcuate inner pronotal stria at the apical Coleopterological Notices, V. 547 angles, margined prosternal lobe, more strongly emarginate nieso- sternum, shorter sutural stria, more coarsely punctured propygidium and several other characters. H. IllUbrosilS. — Oblong, convex, the minute pnnctules invisilile on the elytra but distinct and moderately close over the entire surface of the prono- tum, with a few stronger punctures near the middle of, and behind, the inner stria. Head minutely punctulate, unimpressed, the frontal stria entire, transverse at apex. Prothorax twice as wide as long, the sides rather strongly convergent and evenly arcuate from base to apex ; fine marginal stria abbre- viated at the middle, the two marginal punctures visible ; outer lateral stria straight, extending to the middle but scarcely at all hooked at apex ; inner subentire, coarse, nearly straight ; ante-scutellar stria short, strong. Eli/tra two-thirds longer than the prothorax and but little wider, the sides evenly, feebly arcuate; inflexed flanks minutely, strongly punctulate and convex anteriorly, abi'uptly, longitudinally excavated, smooth, more coarsely but sparsely punctate behind, uuistriate throughout ; lateral series of punctures only visible toward apex ; outer humeral stria feeble, subtransverse ; inner rather long, continued to apex by the interstrial series of punctures which are feeble; subhumeral subentii'e, inwardly hooked at base, the inferior oblique appendage feeble ; dorsals rather coarse, the first three entire ; fourth abbreviated at base ; fifth and sutural equal, apical. Pi opyiiklium not very coarsely, densely and evenly punctate, the pygidinm scarcely more finely, extremely densely so. Prosternal lobe rounded, feebly margined ; meso- sternum broadly truncate, the median emargination rather shallow ; stria entire. Anterior tibiije arcuate externally, pluridentate, the teeth small, serriform, formed principally by the stout spinules ; posterior with an outer series of spinules and an inner row of rather long, stiff, close-set setse. Length 4.4-5.4 mm. ; width 3.3-3.7 mm. Oregon. May be distinguished from fcedatus by its more elongate and oblong form, more strongly punctulate entire disk of the pronotum, shorter sutural stria, more strongly emarginate mesosternum and less transverse eh^tra. It is however closely allied io fcedatus, the principal differential character being the obviously narrower and oblong outline. Three specimens. H. imiciis. — Broadly oval, rather strongly convex, the punctulation completely obsolete on the elytra and nearly so on the pronotum, the latter strongly closely and rather coarsely punctate in a broad area along the lateral stria, equally broadly from apex to base, the convex surface thence to the lateral edge minutely but distinctly punctulate. Head subimpimctate, un- impressed, the stria strong, entire, the transverse apical part feebly sinuate throughout. Prothorax rather smal!, fully twice as wide as long, the sides strongly convergent and evenly arcuate from base to apex ; fine maiginal stria 548 Coleopterological Notices, V. entire, distinct, the marginal punctures obsolete ; lateral stria strong, sub- entire, straight and somewhat crenulate, especially along the transverse apex ; ante-scutellar stria extremely short, punctiform. Elytra transverse, one-half longer than the prothorax, and, at the middle, rather more than one-fifth wider ; sides evenly and strongly arcuate ; intlexed flanks flattened and feebly punctate posteriorly, the single stria much coarser in the flattened area ; mar- ginal series of distant punctures obsolete ; interstrial row subobsolete ; oiater humeral short, oblique, feeble ; inner rather long, fine, extending beyond basal third ; subhumeral rather coarse, subentire, feebly arcuate basally, with a fine oblique inferior appendage only ; dorsals coarse and deep, the first four entire, the fourth arcuate at base halfway to the scutellum ; fifth and sutural finer, short, equal and apical ; surface near the base of the first dorsal distinctly and broadly impressed. PiopijgkHum rather coarsely evenly and very densely punctate, the pygidium strongly, very densely so toward base, gradually more finely and obsoletely toward tip. Prosternal lobe broadly rounded, subtransverse and strongly margined at apex ; mesosternal emargi- nation very feeble and broadly rounded. Anterior tibiae arcuate externally, and with about six small spiculiform teeth ; spinules of the posterior small but rather close-set. Length 4.5 mm. ; width 3.6 mm. New York (Catskill Mts.). Readily distinifuishable by the broadly oval form with subin- flated elytra, and by the pronotal sculpture; from marginicoJlia it may be known by the entire and basally arcuate fourth dorsal stria and verj' densely punctate propygidium. Group Abbrevialus. Resembles the preceding, but with the subhumeral stria greatly abbreviated, interrupted or obsolete. The anterior tibiae are minutely serrulate externally, sometimes almost mutic. The two species here described ma}- be known from any of the others by the coloration, which is similar to that of militaris: — H. electllS n. sp. — Oblong-oval, thick, con vex, the punctulation extremely minute and sparse, the pronotum strongly, densely punctate along the basal margin, gradually more nanowly to the middle ; elytra red and black. Head feebly punctulate, very broadly and feebly concave anteriorly ; stria entire, the apical part wide and feebly sinuate. Prothorax twice as wide as long, the sides feebly convergent and nearly straight to beyond the middle, then more rapidly rounded ; fine marginal stria entire ; three marginal punctures very feeble ; outer lateral stria strongly hooked at apex, extending only to apical third ; inner subentire, nearly straight, very distant from the sides anteriorly, gradually approaching the edge posteriorly; ante-scutellar stria very short, strong. Scutellum small, equilateral. Elytra wider than Jong, not quite one- half longer than the prothorax, and, at basal third, scarcely perceptibly Coleopterological Notices, V. 549 wider ; inflexed flanks feebly concave, sparsely, finely punctate, unevenly bistriate; lateral series of punctures feeble, present in apical half only ; outer subhumeral completely wanting ; inner represented by a feeble row of scarcely perceptible punctures ; outer humeral feeble, subtransverse ; inner v ry short and feeble, longitudinal and coarse at base ; dorsal strise moderately coarse, feebly crenulate within, the first three entire ; fourth and fifth subequal, not extending to the middle ; sutural but little longer ; all the strije ending abruptly at a considerable distance from the posterior margin. Piopyijidium rather coarsely, extremely densely punctate, the punctures contiguous, a small area at each side near the base impunctate ; pygidium but slightly less coarsely, very densely punctate, subimpunctate at tip. Prosternal lobe finely, sparsely punctate, broadly rounded, scarcely at all margined at apex ; mesosternal sinus deep, the stria entire. Anterior tibise with five or six small external denticles foinied by the robust spinules. Length 5.5 mm.; width 3.7 mm. Washington State. The coloration will distinguish electus from any other species except the following, but in the complete absence of the subhumeral stria it is allied to civilis ; the latter is much less convex. H. OregomiS n. sp. — Narrowly oblong, convex ; minute punctules obso- lete, the pronotum punctate along the base as in electus. Head impuiictulate, broadly, feebly concave anteriorly, the stria entire, the apical part very long and nearly straight. Prothorax notably less than twice as wide as long ; sides parallel and nearly straight in basal half, gradually rounded and convergent anteriorly ; fine marginal stria distinct, entire, slightly incurved at base ; three marginal punctures almost completely obsolete; outer lateral stria slightly hooked at apex, extending nearly to the middle ; inner subentire, distant from, but nearly parallel to, the sides, sinuate in the middle ; surface between the two strije distinctly but finely, unevenly punctate. Elytra not more than one-third longer than the prothorax, and, near basal fourth, where the sides are a little more strongly rounded, only slightly wider ; indexed flanks with a broad dilated sulcus, which is coarsely and rugulosely sculp- tured, the second stria not distinct ; inner humeral stria y>iry feeble, short, with a fine detached basal appendix ; strife otherwise as in electus, except that the dorsals are finer and not crenulate, and the sutural extending to basal third. Propyijidium not very coarsely but deeply, very densely punctate, with two distant impunctate spots near the base ; pygidium scarcely, more finely, equally densely punctate, gradually becoming subimpunctate behind basal two-fifths, especially along the middle. Anterior tibiae triangular, with a prolonged outwardly oblique bifid terminal tooth, but without trace of further serration, except a minute isolated denticuliform spinule near basal third ; posterior tibiae rather narrow but strongly, closely, biseriately spinulose. Length 4.4 mm. ; width 2.7 mm. Oregon. 550 Coleopterological Notices, V. The sterna are nearly as in electus, to which this species is closely allied. It differs in the deep, coarsely sculptured and dilated sulcus of the elytral flanks, structure of the anterior tibiae, in the smaller, more narrowly oblong and parallel body, more finely sculptured pygidia, longer sutural stria, subparallel inner thoracic stria and in several other features. PHELISTER Mars. The small species separated under this name by Marseul are peculiarly American and may prove to be tolerably numerous in the United States. . Of those described thus far, aeneomicans and venudus are metallic aeneous and greenish-blue respectively. Of the non-metallic species gentilis has all the striae entire, the sutural and next dorsal joined at base ; subrotundus has the sutural stria alone abbreviated, the inner dorsal not hooked at base; vernus and sannieiH have the inner dorsal and sutural striae equally abbrevi- ated at base, the former represented at base by a puncture, the fourth dorsal not hooked at base; the last two species must be very closely allied if distinct. P. geoinetricus n. sp. — Broadly oval, rather feebly convex, highly polished, impunctate except a broad line of coarse punctures along the sides of the pronotum, dark rufo-castaneous, the elytra piceous-black except at apex. Head small, feebly concave, the stria feeble. Frothorax twice as wide as long, the sides moderately convergent and nearly straight, becoming more convergent and arcuate near the apex ; fine marginal stria entire ; submarginal fine, very close to the edge, abbreviated at the middle, broadly, inwardly hooked at apex : subapical stria crenulate, reflexed at the extremities. Elijtra one half longer, and, before the middle, quite distinctly wider than the pro- thorax ; sides evenly rounded ; apex nariuw, scarcely more than three-fourths as wide as the base ; indexed flanks finely crenulato-bistriate ; inner and outer humeral strise excessively faint; subhumerals completely wanting; dorsals rather coarse, punctulate ; first four entire, the fourth strongly hooked lialfway to the scutellura at base ; fifth and sutural abbreviated at basal third. Propi/gidiu-.ti moderately coarsely, densely and evenly punctate the punctures almost contiguous ; pygidium very minutely and rather sparsely punctate. Prosternal striae becoming subparallel ; posterior margin not distinctly sinuate ; mesosternum evenly, transversely truncate at apex. Antennal fossae very deep. Length 2.0 mm. ; width 1.5 mm. Texas (Austin). Readily distinguishable from vernus by the hooked fourth dorsal stria, impunctate surface and truncate mesosternum. One specimen. Coleopferological Notices, V. 651 PLATYSOitlA Leach. The following species is allied to lecontei: — P. tabella n. sp. — Oblong, broad, parallel, depressed, liiglily polished, impnnctate except along the sides of the pronotum, where the punctures are rather small but deep and sparse, closer smaller and more uneven near the apical angles. Head broadly, feebly concave anteriorly ; stria fine but entire, convergent toward base. Prothorax not quite twice as wide as long, the sub- marginal stria entire coarse and deep; transverse apical stria extending to the apical part of the subniarginal, where it is feebly reflexed. Elylra three- fourths longer and scarcely visibly wider than the prothorax ; inflexed flanks closely bisulcate ; humeral stria feeble, diverging but slightly from the first dorsal ; dorsals rather fine but deep, impunctate, the first four entire ; fifth and sutural short, not quite extending to the middle. Propygidium rather coarsely but sparsely punctate, finely so in the middle ; pygidium rather coarsely but sparsely punctate, the punctures shallow and becoming small toward tip. Prosternal lobe large, very broadly rounded, minutely margined at apex ; mesosternum broadly, distinctly sinuate at apex, the marginal stria fine but entire. Anterior tibiae acutely and strongly 4-dentate. Length 4.0 mm. ; width 2.0 mm. Indiana ? Differs from lecontei not only in its larger size, but in the per- fectly entire fourth dorsal stria and in the apical angles of the pro- thorax, which are less transversely rounded and more anteriorly prominent. The locality is possibly somewhat doubtful, as the single specimen had no label in the Levette cabinet. There is no corresponding Mexican species however. KPIERIJS Erichs. The species of Epierus present but little diversity of appearance, but may be readily separated by the following structural charac- ters : — Elytra with all the striae entire, the fifth and especially the sutural, some- times very feeble or obsolescent toward base. Fifth dorsal and sutural striae distinct and strong to the base. Inflexed flanks of the elytra strongly bisulcate ; body strongly convex. Form broadly oval ; pygidium extremely finely and feebly punctulate ; prosternal striae widely separated {nigrellus Say). regiilaris Beauv, Form more narrowly oval ; pygidium distinctly but sparsely punctate anteriorly; prosternal striae narrowly separated and less divergent anteriorly TicinilS Lee. 552 Coleopterological Notices, V. Iiiflexed flanks not blsulcate, unistriate or with a line of confused punc- tures. Body convex. Pygidinm and pronotum more coarsely and strongly punctate. nOTellllS Zimm. Pygidium and pronotum very finely punctnlate ; prosternal strije becoming parallel and very close, not divergent anteriorly. piilicariiis Er. Body subdepressed, elliptical ; prosternal stripe feebly divergent ante- riorly from the middle ; subhumeral stria nearly straight, not inferior. cllipticiis Lee. Fifth dorsal and sutural striae siibobsolete near the liase, the foimer however always traceable ; body strongly depressed ; male with a small corni- form frontal process ; prosternal striae very distant and strongly diver- gent anteriorly from the middle ; sternal suture simple ; mesosternal stria entire : apical stria of the pronotum broadly interrupted. Short, broadly oval ; prosternum extremely minutely, sparsely punctu- late, the apical lobe not margined ; elytra without trace of the inner subhumeral stria; pygidium indistinctly punctnlate (decipiens Lee, nasutus Horn) plan 11 Ills Er. Elongate, narrowly oval ; prosternum densely and strongly punctulate, the apical lobe finely, deeply margined ; elytra with the inner sub- humeral distinct in apical half and very close to the first dorsal ; pygidium finely but strongly and distinctly punctate. corniitus n. sp. Elytra with the fifth dorsal and sutural completely obliterated in basal third; body short, strongly convex ; transverse sternal suture double. subtropicus n. sp. In most of the species the two minute marginal punctures of the pronotum referred to under the various species of Hister, are evi- dent and constant. E. corniltus. — Rather elongate, oblong-oval, depressed, shining, black, the tarsi dark rufous ; antennae piceo-rufous, the club pale flavo-testaceous ; integuments very finely, densely punctate throughout. Head not margined, more prominent at the sides above the antennae ; clypeus large, nearly verti- cal, with a short erect process at apex, bearing a short stiff seta, the clypeal suture feeble. Prothorax almost twice as wide as long, the sides feebly con- vergent, broadly, feebly arcuate throughout ; marginal stria deep, inferiorly arcuate in the middle of the sides, broadly interrupted at apex ; two marginal punctures distinct ; disk with a very obsolete impression along the median line in nearly basal half. Elijtra as long as wide, twice as long as the pro- thorax and only very slightly widt-r ; sides evenly, feebly arcuate ; base broadly, angularly emarginate throughout ; inflexed flanks unistriate ; mar- ginal stria inferior, gradually ascending near the base ; outer subhumeral represented by a few remote punctures ; inner distinct toward apex and with Coleopterological Notices, V. 553 traces at base which appear to be independent of the oblique humeral, the latter distinct; dorsals strong, finely punctate within, entire; sutnral obso- lescent at base. Fropi/gldiwn finely but strongly, rather closely, the pygidiiim more sparsely but equally distinctly punctate, the punctures intermixed with others which are minute. Prosternum strongly, remotely bistriate ; meso- sternum broadly, feebly sinuato-truncate ; marginal stria entire. Length 2.3—2.5 mm. ; width 1.2-1.3 mm. New Mexico (Las Vegas). Resembles planuias, but reraarkablv distinct by reason of the characters stated in the table. It is allied also to lovgvlus, and there are probably several other species having the clypeus simi- lary tuberculate in the male. Three specimens. In this species the marginal stria is the ninth, and is represented only by a row of distant punctures in Hister ; the two or three remote and evanescent punctures on the convex flanks here repre- sent the outer subhumeral, and the inner subhumeral evidently at- tains the basal margin irrespective of the oblique inner humeral. E. sulltropicus. — Broadly oval, strongly convex, highly polished, black throughout ; antennal club very pale. Head minutely, closely punctate, equally prominent throughout the width between the antennae ; clypeus large, slightly inflexed, more densely punctate, the suture transverse and very fine ; apical margin sliglitly tuberculate at the middle. Prothora.v fully twice as wide as long ; sides strongly convergent, a little more arcuate toward apex ; marginal stria straight, not interrupted at apex ; disk uniformly, finely but strongly and not densely punctate, the punctures coarser at the basal margin, rather broadly so in the middle. Elytra distinctly shorter tlian wide, not quite twice as long as the prothorax, and, near the middle, quite distinctly wider ; sides evenly, distinctly arcuate ; disk very minutely, evenly, sparsely but distinctly punctulate, less strongly than the pronotuni ; inflexed flanks unistriate ; lateral stria entirely inferior, only slightly ascendent toward base ; outer subhumeral wanting, the inner represented only by a short trace near the middle ; oblique humeral fine but long ; dorsal striae not very coarse, abrupt, not distinctly punctate ; first three entire ; fourth not quite attaining the base ; fifth and sutural abruptly abbreviated, the sutural also abbreviated before the apex. Propygidium finely but strongly, not densely punctate, the pygidium large, flat, with the punctures fine deep and rather close. Pro- sternum with the deflexed lobe very short, wide, strongly and finely margined at apex, the intercoxal striae distant, becoming subparallel and slightly abbre- viated anteriorly ; mesosternum with a broad and shallow emargination, the apical stria broadly interrupted. Intersternal sutnre widely double, the anterior line broadly subaugulate throughout the width, distinct, evenly crenulate, extending anteriorly two-thirds to the emargination ; posterior line almost obliterated. Length 2,3 mm. ; width 1.6 mm. Florida. Annals N. Y. Acad. Sci., VII, Dec. 1893.— 36 554 Coleopterological Notices, V. This species is possibly the same as that which is identified in our li^ts as the Colombian hrnnnipevms of Marseul ; it differs greatly from hrunnipennis, irrespective of color, in its non-inter- rupted apical stria of the pronotum and by the widel}"^ interrupted mesosternal stria. CARCIIVOPS Mars. This genus is well distinguished from Paromalus by the distinct scutellum and striate el}'tra. In covjimctus and opuntise the fine sculpture is very remarkable, the minute punctulation in the former being arranged in short transverse lines, each consisting of two or three minute approximate points, and in the latter, in more rounded clusters of two or three. In some of the allied species the minute punctures, although simple, bear evidence from their somewhat irregular outlines, of being an incipient stage of the clustered points of opuntise. Conjunctus is abundant at Fredericksburg, Virginia The species allied to gilensis by the partial obliteration of the subhumeral stria, may be distinguished among themselves as fol- lows : — Surface convex, the prothorax longer, barely twice as wide as long. Subhumeral stria obsolete ; size larger, more oblong-elongate. gilensis Lee. Subhumeral represented behind by a fine stria or series of punctures. Broadly oval ; outer subhumeral at base — near the oblique humeral — long and striiform COnsors Lee. Narrowly oval, smaller, the outer subhumeral represented at base by a deep elongate puncture papagoauR n. sp. Surface depressed ; size smaller ; prothorax much shorter, more than twice as wide as long COrticalis Lee. Corticalis is apparently not the same as tevellus Er., the size being much smaller, and the prothorax is still shorter according to the figure of Marseul. The width given by Marseul for tenellus is 1.5 mm., while the largest specimen of corticalis which I have seen is not more than 1.0 mm. w^ide; Marseul is however somewhat uncertain in his measurements. Of 14-sfriatiis I have a specimen taken in Lake Co., California; it is doubtless cosmopolitan. C papagoaiia. — Narrowly oblong-oval, black, the legs and antennae dark rufous, polished, the minute punctulation sparse, scarcely visible, sim- ple, with stronger sparse punctures only narrowly along the elytral apex and Coleopterological Notices, V. 555 broadly, unevenly at the sides of the pronotum. Head evenly, feebly convex, not at all impressed, finely, sparsely punctulate, the punctures larger and minute inteimingled, distinctly striate along the lateral edges almost to the front. Prothorax not quite twice as wide as long, the sides feebly convergent and nearly straight in basal two-thirds, more rounded and convergent at apex ; marginal stria deep, entire, continuous along the apex. Elytra but little wider than the prothorax, three-fourths longer, the apex two-thirds as wide as the base ; sides broadly, evenly arcuate ; inflexed flanks strongly liistriate ; inner subhumeral represented by a feeble series of uneven punc- tures ; oblique humeral short and very fine ; dorsals coarse, deeply impressed and finely crenulate ; first four entire ; fifth and sutural abbreviated at basal tliird. Propygidium rather coarsely deeply and densely punctate, except near the hind margin ; pygidiura finely but deeply, sparsely and unevenly punctate, also with intermingled minute punctules ; stria attaining the basal angles. Prosternal lobe large, subquadrate, finely, dually punctulate ; inter- coxal part strongly bistriate ; mesosternnm broadly, very feebly sinuate, the marginal stria very broadly, posteriorly angulate. Anterior tibiae strongly bidentate. Length 1.9-2.2 mm. ; width 1.2-1.25 mm. Arizona (Benson). Three specimens. In tiiis genus there is no true antennal fossa, the antennae being simply protected by the anterior legs when the latter are folded into the large crural excavation toward the sides of the prothorax beneath. PAROAIALUS Erichs. The species of this genus inhabiting the United States may be outlined as follows : — Presternum with two long deep striae ; body larger, strongly depressed. aequalis Say. Prosternum not striate, except sometimes feebly or partially ; body smaller, narrower and more convex. Elj'tra without trace of sutural stria. Elytra with two deeply impressed oblique striae sublaterally at base. Iiistriatus Kr. Elytra with the oblique striae very feeble or obsolete. Form cylindrical, short, resembling Teretrius americamis ; prosternum flattened teres Lee. - Form oblong oval. Punctures small, much finer than in difficilis de1>ilis Lee. Punctures strong but sparse, fully as large as in difficilis but more distant niailClIS n. sp. Elytra with a distinct abbreviated sutural stria. Prosternum with two long feeble and interrupted striae ; pygidium merely with a few fine vermiculate lines in the male ; form oval, more convex, 556 Coleoptcrolorjical Notices, V. smaller, the elytra subinflated at basal fourth, and distinctly wider than the prothorax ; sides of the latter more convergent from the base. seminulum Er. Presternum without strise, or with two Yery short stripe posteriorly ; form oblong-oval, the elytra but slightly wider than the prothorax. Subdepressed, the elytra not quite as long as wide....difl[icilis Horn. Rather more convex and elongate, the elytra longer and more nar- rowed at apex, fully as long as wide COmplexUS n. sp. I cannot distinguish estriatvs and affinis of LeCoute from aeqiialis, in which species there is considerable sexual disparity, some speci- mens— probably the males — being more narrowed posteriorly than others. jEqualis is very different in general appearance from the other species of the table. The species above identified as seminulum is common in the Mis- sissippi Valley and North Carolina, but does not agi^e very well with Marseul's figure, where the elytra are represented as only slightly more than one-half longer than the prothorax ; in the speci- mens before me the elytra are twice as long as the prothorax, and there are several other notable differences, P. mailCIIS. — Narrowly oblong, moderately convex, black, polished, strongly but sparsely punctate, more finely and closely on the pronotum. Head even, finely punctate ; marginal stria fine but entire, following the sub- lateral sinuations. Prothorax scarcely more than three- fourths wider than long ; sides very feebly convergent and scarcely arcuate, becoming gradually more arcuate and distinctly convergent toward apex ; marginal groove deep, entire, unbroken along the apex ; punctures toward the sides scarcely at all larger but sensibly closer ; base transverse. Elytra fully as long as wide, not much more than twice as long as the prothorax and only just visibly wider ; sides feebly arcuate ; apex three-fourths as wide as the base ; intlexed flanks with a fine subcariniform entire stria, continuing unbroken around the apical angles, forming an apical stria which is curved slightly forward at the suture and then obliterated ; two oblique strise very feeble, the outer traceable far behind the middle. Propygidhim finely, not densely punctate, the pygidium very minutely, less distinctly but less sparsely so, in one of the sexes with a few central vermiculate erosions. Prosternum with the lobe broadly rounded, not margined and finely, sparsely punctate, flattened behind, without trace of striae, the process rounded ; mesosternum not striate at apex, the emargina- tion distinct ; lateral striae coarse ; surface with a broadly trapeziform stria behind the emargination. Anterior tibiae broad, scmi-circularly rounded ex- ternally, and with four small acute equal and equidistant teeth, the apex broadly oblique and straight. Length 2.1-2.25 mm. ; width 1.0-1.15 mm. California (Humboldt Co.). A little larger than histriatus and with a broader prosternum. The suture between the meso- and metasterna is singularly and Coleopterological Notices, V. 557 variously modified in this genus; in bistrialus, for example, it becomes broadly double, the anterior margin strongly biarcuate; the trapeziform stria of mancus is also a peculiar and very diflPerent modification. Three specimens. P. COmplexus. — Oblong-oval, moderately convex, polisliei, piceous- black, the legs and antennae rufous ; punctures of the head and pronotum very fine, sparse, even, of the elytra stronger but fine and rather sparser. Head not impressed, the marginal stria extremely fine and feeble but entire. Protborax three-fourths wider than long, the sides feebly convergent and just visibly arcuate, becoming more convergent and arcuate toward the apex ; marginal stria entire, not interrupted at apex. Elijtra nearly as long as wide, three-fourths longer than the protborax, and, before the middle, only very slightly wider ; marginal stria with a row of distinct punctures internally, extending along the apex almost to the suture ; oblique basal striae feeble ; sutural strong, straight, extending to basal third. Propygidium finely but deeply, evenly and rather closely punctate, the pygidium finely, about equally closely so, almost entirely occupied, except in basal fourth, by a large and very deep, circular excavation, which is longitudinally divided along the middle by a compressed carina, the bottom of the excavation coarsely granulose, two or three of the tubercles near the posterior extremity ])eing large and prominent. Presternum prominent and rounded behind, with two very short subapical striae, the lobe large, strongly deflexed, not margined and more strongly punctate ; mesosternum not margined at apex, the emargination deep ; transverse suture feebly double, the anterior line unevenly, feebly bicuspid. Anterior tibiae with four nearly equidistant external teeth. Length 1.9 mm. ; wid h 1.0 mm. Alabama. The single type is probably a male, the sculpture of the pygidium being very remarkable. Comfjlexus is allied to Heminulum, but in the male of that species the pygidium is simply vermiculate. 0]VTIIOPHILUS Leach. The following species is allied to leconlei: — O. SOltaili n. sp. — Evenly oval, moderately convex, polished, black, the legs rufo-piceous. Head finely, strongly, very densely punctate, more sparsely and coarsely so in the feeble iuipression between the slightly oblique latero- frontal ridges ; epistoma large, evenly convex, trapezoidal, the suture obso- lete. Prothorax twice as wide as long, the sides straight and parallel to the middle, then abruptly, strongly convergent and straight to the apex, the apical angles slightly obtuse and scarcely at all rounded ; disk strongly but not very coarsely or closely punctate, the pumtures somewhat uneven, large and small in size ; lateral margin thickened and strongly, abruptly reflexed ; lateral 558 Coleopterological Notices, V. ridge strong, becoming attenuated and outwardly curvate anteriorly in -the direction of the apical angle, attaining apical fifth, perfectly straight and feebly, outwardly oblique throughout posteriorly, attaining the base ; remain- ing ridges only feebly traceable, on each side one tine and basal, near the lateral ridge, another attaining neither base nor apex, and a third near the middle in apical half. Elytra more distinctly rounded in basal third, behind the base quite distinctly wider than the prothorax, more than twice as long, nearly as long as wide, each with seven strong fine and even ridges, the inter- spaces coarsely grooved, the grooves remotely, not strongly punctate and enclosed each by two fine, less elevated carinje ; inflexed flanks coarsely, strongly punctato-reticulate, with an abrupt deep and remotely punctate groove near the lateral ridge, inferiorly arcuate near the base, not attaining the latter, the carina fine only visible in basal fifth. Piopyi/idium not twice as wide as long, strongly, rather closely but not very coarsely punctate, somewhat strongly carinate ; pygidium very strongly inflexed, longer than wide, strongly, rather closely and unevenly punctate, the punctures finer toward apex. Pro- sternum wide, coarsely but sparsely punctate ; mesosternum broadly, strongly cuspid at apex, fitting closely into the prosternum, very coarsely, somewhat closely punctate. Legs long, slender ; tarsi notably elongate, the ungues very long slender and feebly arcuate. Length 3.0 mm. ; width 2.2 mm. Colorado (Denver). Two specimens taken by Mr. Hugo Soltau, one of which he has kindly placed in my cabinet. From leconlei this species differs greatly in the broadly but strongly angulate sides of the protho- rax, and in the wholly different form of the strong lateral ridges of the pronotum. AIVAPLEUS Horn. The two species in ray cabinet may be readily known as fol- lows : — Evenly oval, the elytral apex narrow, less than one-half of the maximum width; prosternum between the coxae rather wider than long; punctures throughout very coarse and strong niargiliatlis Lee. More oblong-oval ; elytral apex fully one-half of the maximum width ; pro- sternum narrower between the coxae, about as long as wide ; punctuation less coarse and more superficial COinpactuS n. sp. These two species can be readily discriminated by certain pecu- liarities of facies, which are difficult to describe exactly. A. conipactlis. — Oblong-subrotund, rufo-testaceous throughout, moder- ately shining, rather coarst'ly, densely punctate. Head concave between the antennae, the point of insertion of the latter visible anteriorly. Prothorax about two and one-half times as wide as long, the apex one-half as wide as Coleopterological Notices, V. 559 the base, the latter broadly, obtusely angulate ; sides strongly convergent, evenly and distinctly arcuate ; disk with an acute lateral edge but devoid of marginal stria. Scutellura distinct, small, equilateral. Elytra not as long as wide, fully two and one-half times as long as the prothorax, and, near basal third, distinctly wider ; apex transversely truncate ; sides strongly, evenly rounded ; epipl"urse distinctly unistriate ; acute lateral edge feebly reflexed ; disk with two short oblique and extremely obsolete elevated lines laterally at base; suture gradually and feebly elevated, Propygidium partially covered by the elytra, not exposed from above ; pygidium large, moderately indexed, convex, shining, finely, sparsely punctate. Prosternal lobe short, not mar- gined, parallel intercoxal striae distant ; posterior margin truncate, feebly sinuate in the middle ; mesosternum not margined at apex. Length 1.45 mm. ; width 1.2 mm. California (8an Diego). A single specimen of undeterniined sex. Of marginatus I ob- tained a single specimen at Austin, Texas. BACANIUS Lee. The general characters of this genus indicate a strong affinity with Anapleus, and it bears much the same relation to the other genera of Histrini that Abrseus does to Saprinus and its allies. The prosternal lobe is strongly developed throughout the genus, and there seems to be scarcely any other reason for associating it with AbrtBus than the minute size of the body. Bacanius is a very definitely limited and widely distributed genus, in which the species are much better defined and more isolated among them- .'^elves than in Acritus. The species of our fauna may be readily identified as follows: — Elytra without an entire marginal carina. Elytra without disoal striae. Elytra vvith a fine entire and oblique sublateral stria : elytral punctures forming long coarse longitudinal rugae ; size minute. piinctiforinis Lee. Elytra with a fine sublateral stria in apical half; elytral punctures dis- tinct rounded and isolated ; size larger tantilllis Lee. Elytra with several coarse oblique discal striae ; surface very convex, the punctures isolated ; size still larger globlllintlS n. sp. Elytra with an entire marginal carina and an entire or subentire sublateral stria. Sublateral stria entire; pygidium very minutely and remotely punctulate. inisellus Lee. Sublateral stria abbreviated at base ; pygidium strongly and rather closely punctate debilitailS n. sp. 560 Coleojjterological Notices, V. Elytra witli two fine and acnte, parallel approximate and entire marginal carinae ; surface much less convex aciiniiliatUS n. sp. Other forms doubtless exist in cabinets, but the species are much less numerous than in Acritus. B. globulin IIS. — Broadly oval, very convex, polished, dark rufo-testa- ceous throughout. Head even, not concave, very minutely, sparsely punctu- late, gradually more closely and strongly punctate toward the epistomal apex ; antennal tubercles rather acute, not vertically prominent. Prothorax nearer thrice than twice as wide as long ; sides very strongly convergent, broadly, strongly and evenly arcuate throughout ; apical angles acute ; marginal line acute, extending unbroken along the apex ; punctures very fine and sparse anterioily, becoming gradually slightly larger and less sparse toward base. Scutellum invisible. Elytra long, convex and declivous behind, narrowly subtruncate at apex viewed posterioi'ly, a little wider than the protliorax and three times as long, evenly rounded at the sides, the punctures moderately coarse, deep, rounded, rather sparse, gradually closer behind ; inflexed flanks with the marginal stria very feeble, punctate, visible toward base ; sublateral stria distinct in more than apical half; each elytron also with three or four coarse, oblique, sublateral striae toward base, of which the external appears to be the internal humeral. Pi/gidium rather coarsely, very densely punctate. Prosternum truncate behind, much wider than long, with a large deflexed and broadly rounded apical lobe, finely, sparsely punctate ; mesosternum more strongly, less sparsely punctate, not striate at apex, the lateral strise very oblique from the coxae to the prosternal angles. Anterior tibiae very broad, rounded externally, with a fringe of very small erect setae, not spinulose. Length 1.1 mm. ; width 0.8 mm. California (Humboldt and Siskiyou Cos.). Distinguishable by its rather large size and coarsely eroded ely- tral striae. It is not rare in northern California. B. debilitans. — Somewhat broadly oval, very strongly convex, polished and dark rufo-testaceous througbout. Head Rnn\y, sparsely punctulate, more strongly anteriorly. Protliorax much more than twice as wide as long, the sides moderately convergent, broadly and almost evenly arcuate from base to apex, the apical angles acute; marginal line acute, entire along the apex but very fine ; punctures fine, even and sparse throughout. Scutellum wanting. Elytra globose, twice as long as the prothorax viewed vertically, and slightly wider ; sides broadly, evenly arcuate ; punctures fine but strong, rather sparse ; carina of the inflexed flanks very fine aud puncto-crenulate, uniting with the first sublateral stria before the apex ; disk also with an evanescent oblique stria extending to the middle of the base. Pygidiuin finely, strongly, rather closely punctate. Prosternmn very short and transverse, finely, S]>arsely punctate, the lobe well developed, more closely punctate, finely margined at apex. Meso-metasternal surface finely but strongly, sparsely punctate. An- terior tibiae broad, rounded externally. Length 0.7 mm ; width 0.45 mm. Coleopterological Notices, V. 561 Florida (Crescent City). Mr. Sciiwarz. Tliis is the smallest species which I have seen, and is allied to miaellus, differing by the characters mentioned in the table. In addition, vnsellus is broader and less convex, with a more trans- verse prothorax, more convergent and rounded at the sides, and there is no trace of the long median stria of the elytra. !B. acuniinatllS* — Evenly, rather narrowly elliptical, only moderately convex, sinning, pale testaceous throughout. Head extremely minutely, spar.'5ely punctulate, slightly more stronger and closely so on the epistoma. Prothorax much more than twice as wide as long, the sides very strongly con- vergent, broadly and evenly arcuate from ba.'^e to apex ; margin finely acute ; punctures fine and very sparse, becoming almost obsolete anteriorly, sliglitly coarser near the base. Scutellum not definable but apparently not wholly want- ing. Elytra from above nearly three times as long as the prothorax, only very slightly wider, together rather narrowly rounded behind viewed posteriorly, broadly rounded on the sides, apparently connate, the suture broadly, feebly impressed on the posterior declivity ; punctures minute, lather sparse ; sur- face finely, obliquely rugose except toward apex and toward base externally ; discal strife wanting, the two fine carinas of the inflexed flanks equal entire and rather close throughout. PygiJium strongly inflexed as usual, nearly flat, minutely, remotely jiunctulate, more closely and strongly so toward the lateral and apical edges. Prosternum moderately broad between the coxse, the lobe large and well developed, deflexed, very finely margined at apex and minutely, remotely punctulate. Anterior tibiae broad, rounded externally, with a min- ute external spine near the apex. Length 0.9 mm. ; width 0.65 mm. California (Sta. Cruz Co.). This is one of the most distinct species of the genus in having the sublateral stria of the elytra parallel and close to the marginal line throughout, and not inwardly oblique toward base as is usual. This character is suggestive of Anapleus, but the apices of the elytra are formed very differently, and there is no trace of the doubly carinate lateral edges of the pronotum, which is so characteristic a feature in Anapleus. A single specimen. SAPRIIVUS Erichs. The species of this large and difficult genus seem to be more espe- cially subarctic in distribution and are abundant in the United States, especially on the Pacific Coast ; those in the neighborhood of Jimbr'iafiiH are very closely allied and more than usually vari- able, necessitating large series and careful study in the discrimina- tion of species. The following new forms are assigned to the various groups of Dr. Horn as follows: — 562 Coleopterological Notices, V. Group IV. External subhumeral stria contiguous to the marginal ; elytral punctures abruptly coarse posteriorly, not distinct near the base (type pectoralis). Larger, black, without aeneous lustre ; mesosternum coarsely, densely punc- tate ohsidianiis Smaller, more narrowly oval ; lustre evidently aeneous ; mesostHnunn finely and sparsely punctate Sll1)aeratus External subhumeral distinct and diverging from the marginal ; elytral punc- tures not abruptly coarse posteriorly and visible over the entire disk (type ohscurus). Dorsal striae long, almost extending to apical fourth ; body oblong-oval, larger laraiiiiensis Dorsal striae shorter, extending but slightly behind the middle ; body shorter, oval audax Group V. Form, coloration and sculpture very nearly similar to pennaijhamcun ; pygidiutn tumid and carinate toward apex, broadly impressed toward the sides except near the base profusU8 Group Vr. Elytra without distinct punctuation except in about apical half SOCillS Elytra punctate throughout, but generally feebly and finely so toward base, the punctures sometimes ratber abruptly coarser and denser behind. Pronotum evidently more coarsely and densely punctate near the sides. leiitus Pronotum not more strongly and generally scarcely more densely punctate toward the sides, distinctly and evenly punctate throughout the disk. Sutural stria entire ; lustre dull ; punctures strong and dense tbroughout. opacellus Sutural stria abbreviated at basal fourth ; punctures stroiiji and dense throughout, more or less confluent posteriorly Cl'ibruni Sutural stria abbreviated or obsolescent in basal third ; pnnctuies sparse throughout ; lustre polished. Larger, broadly oval ; sutural stria wholly obsolete toward apex. (letractiis Small, narrowly oval ; sutural stria attaining the apex... contractus Group VII. Prothorax fimbriate at the sides ; body black, opaque, punctured throughout, iutritus Group VIII. Elytra with a distinct sutural stria which is abbreviated or inteii npted behind. Elytra without trace of punctuation at any part illipiliictelllis Elytra punctured nearly as \\\ fraternus ; pronotal sculptuie nanowly effaced along the lateral margins laxatus Coleopterological Notices, V. 563 Grronp IX. Small species resembling lucidnlus; anterior tibise strongly trideiitate ; sides of the prothorax fimbriate. Punctures of the elytra extending, near the suture, to basal fourth. propensiis Punctures of the elytra not extending much within basal third, very small and sparse sei'Vilis Group II of Dr Horn cannot remain as originally proposed, and in reality comprises only Gnalhoncus rotundatus. The other three species are widely discordant ; hehrensi belongs to group IV, and is probably not different from ppcforalis, in which species the pro- sternal striae display a tendency to unite in front in some specimens, for, in laramiensis, there are examples having the two striae paral- lel, convergent in front, or shorter and completely united. Plani- sternus and r-ugipennia are aberrant types, each possibly requiring a special group. The four species now placed at the end of group IX, belong to Pachylopus as extended by Marseul, and the genus is apparently valid. S. Obsidianus. — Oval, strongly convex, highly polished, black, the tibiae and tarsi rufescent. Head finely evenly and sparsely punctate, with a larger median puncture near the base ; transverse frontal stria fine but distinct, widely interrupted at the base of the olypeus. Prathornx fully twice as wide as h)ng, the sides distinctly convergent and feebly arcuate from the base, becoming strongly convergent and arcuate anteriorly ; marginal stria distinct ; disk subimpunctate except abruptly and coarsely so along the basal margin and more gradually coarsely and closely at the sides, the punctures much finer toward base. Elytra at basal third distinctly wider tlian the protliorax, one-half longer ; sides broadly arcuate ; marginal stria on the flank, distinct, gradually ascending toward base and confused with the outer subhumeral ; inner subhumeral completely obsolete ; oblique humeral fine, distinct, straight, extending to basal third ; dorsals coarse and very coarsely punctate, subequal, extending distinctly behind the middle, the first not extending beyond apical third, tlie fourtli broadly arcuate at base, joining tlie deep entire and punctate sutural ; punctures coarse, deep, moderately close in apical two-thirds near the suture and apical third at the first dorsal, not extending laterally beyond the.latter. Propygidium densely punctate, the punctures gradually becoming vtsry coarse posteriorly ; pygidium closely punctate, finely so toward apex. Pronternal striae long, coarse, deep, gradually convergent anteriorly and almost confluent just behind the apical margin ; surface convex. Anterior tibiae strongly arcuate externally in apical half, finely pleuridenticulate. Length 3.5 mm. ; width 2.G mm. bC)i Coleopterological Notices, V. Alabama (Mobile). Mr. Soltau. Differs from pectoralis, which it strongly resembles, in the coarser punctuation and especially in the much coarser and more coarsely punctate elytral striae. The prosternal striae are very much longer than is usual in pectoralis. A single specimen. S. SllbserattlS. — Narrowly oval, convex, very highly polished, black, with a feeble but distinct aeneous lustre ; legs scarcely paler. Head finely sparsely and rather feebly punctate ; frontal stria extremely fine, oblique at each side. Prothorax four-fifths wider than long ; sides cfuivergent from the base, broadly arcuate and strongly convergent anteriorly ; marginal stria dis- tinct ; disk punctured as in jiectorulis. Elytra rounded at the sides, one-half longer than the prothorax, and, at basal third, distinctly wider, the marginal and outer subhumeral striae as in obsidianus ; inner subhumeral completely obsolete ; oblique humeral straight, scarcely extending beyond basal fourth and distant from the first dorsal even at base ; dorsal striae coarse and coarsely punctate, short, slightly irregular, extending to about the middle, the first scarcely longer and bent inward at base ; second much more distant from the third toward base than the latter is from the fourth, which is broadly arched at base joining the sutural, the latter vf.ry fine toward base and not extending quite to the apex ; punctures rather coarse and decidedly sparser, distributed nearly as in obsidicnius. Pi/yidia finely but strongly, densely punctate through- out. Prosternum feebly convex, the striae nearly straight, distant behind, gradually convergent and almost contiguous just behind the apical margin. Anterior tibiae very finely serrulate externally. Length 2.8 mm. ; width 2.1 mm. Louisiana (New Orleans). This species may be readily distinguished from the preceding by the smaller size, narrower form, asneous lustre and finer, sparser sculpture. They both differ from pectoralis in the coarser elytral striae and disposition of the elytral punctures, which in the latter extend forward scarcely more near the suture than laterally. S. laramiensis. — Oblong, the sides broadly arcuate, moderately convex, highly polished, black, the elytra and femora dajk rufo-piceous ; tibiae and tarsi rufescent ; lustre not metallic. Head finely, evenly, rather closely punc- tate, the marginal stria feebly traceable only at each side of the front ; disk with a larger puncture just behind the middle and quite distant from the base. Prothorax a little more than twice as wide as long, the sides only feebly con- vergent near the base, broadly rounded and strongly convergent in apical third; marginal stria tine; punctures sparse but distinct throughout, finer toward the middle, only slightly closer laterally, much coarser near the basal raargin. Elytra more strongly rounded at basal fourth where th(iy are rather distinctly wider than the prothorax, one-half longer ; punctures sparse and visible throughout, hecouiing gradually rather coarse posteriorly except toward Coleopterological Notices, V. 565 the sides ; marginal stria inferior, distinct from the outer subhumeral at base ; inner subhumeral distinct in apical half to two-thirds ; oblique humeral deep but rather short ; dorsals long, subequal, strong, slightly punctulate, the fourth rather narrowly arched at base, joining the entire sutural. Pygidia not very coarsely' but deeply and closely punctate. Prosteruum slightly con- vex, the striae rather approximate, variable in length, generally more or less convergent anteriorly. Mesosternum broadly sinuate, rather coarsely but not very densely punctate, the apical stria entire. Anterior tibiae expanded externally toward apex as usual, finely multispinulose. Length 3.0-3.4 mm. ; width 2.0-2.25 mm. Wyoming (Cheyenne). Mr. Soltau. A fine distinct species, readily known from any other of this group by its oblong form and coloration. It may be placed near Jioridde, but differs notably in the feebly convex and non-carinate prosternum. S. audax. — Rather broadly oval, convex, black, polished, without me- tallic lustre. Head finely, sparsely punctate, the marginal stria obsolete above the eyes and at apex. Prothorax rather more than twice as wide as long ; sides strongly convergent and very feebly arcuate, broadly so anteriorly ; marginal stria deep, entire ; disk finely, sparsely punctulate, rather coarsely and per- forately but not densely punctate in a broad area at the sides and unevenly along the base. Elytra at basal third slightly wider than the prothorax, two- thirds longer, distinctly wider than long ; punctures strong but very sparse, gradually becoming minute to the base throughout the width ; marginal stria inferior, nearly straight, the attendant series of punctures strong and close- set ; outer subhumeral acutely defined below the humeri, one-fifth the total length ; inner represented by a mere short trace behind the middle ; oblique humeral very fine and feeble ; dorsals fine, broadly arcuate, punctured within, the first extending to apical fourth, two to four evenly, gradually shorter, the fourth ending at the middle, one to three hooked at base, the fourth broadly arched to the sutural which is only distinct in median third of the length ; apical stria extending only to the middle of each elytron. Propygidium very short, five times as wide as long, strongly, densely punctate, gradually more finely so from apex to base ; pygidium large, convex, strongly, closely punc- tate, the punctures gradually subobsolete toward apex. Prosternum evenly but distinctly convex, with a median fovea at some distance behind the ante- rior margin, the striae strong, distant, somewhat divergent anteriorly ; sides anteriorly deeply foveate. Anterior tibise finely serrulate. Length 2.9 mm. ; width 2.2 mm. New Jersey. Greatly resembles paeminosiis, but differs in the obsolete basal parts of the sutural stria, the shorter second and third dorsals, much less arcuate toward base, more approximate prosternal striae and several other characters. 566 Coleopterological Notices, V. S. profllSIIS. — Broadly oval, strongly convex, highly polished, hrilliant metallic bluish-green in color. Head nearly flat above, minutely, sparsely piinotulate, with a small deep median puncture near the base; marginal striae entire but not united in front, where they are flexed forward to the middle of the clypeus ; transverse clypeal suture sometimes distinct. Prothoiax scarcely twice as wide as long ; sides strongly convergent and nearly straight to apical tliird, then broadly rounded ; marginal stria fine, not quite attaining the base ; punctures wanting except sparsely and very narrowly along the basal margin, and in a moderately wide dense area from the apex to basal third at some dis- tance from the lateral margin. Elytra nearly as in pennsylvanicus, the third dorsal longer, the sutural obsolescent toward base and the posterior punctured area scarcely extending beyond the middle. Propygidium coarsely, sparsely punctate; pygidium elongate, gradually attenuate and convex toward apex, rather coarsely but not very densely punctate, with two elongate-oval impnnc- tate subapical areas, separated by a longitudinal carina, broadly impressed toward the sides. Prosternum nearly as in pejinsylvanicus, but with the basal part of the striae longer, the apical much shorter ; mesosternum strongly but sparsely punctate, the apical stria broadly interrupted. Anterior tibiae broad, with three or four strong external teeth. Length 4.0-5.5 mm. ; width 3.0— 3.8 mm. Kansas; Colorado; Texas (Galveston). This species closely resembles pennsylvariicus, but may be readily distinguished by the structure of the pygidium, more strongly trape- zoidal prothorax, coarser broader and stronger deniiculation of the anterior tibiae, broadly interrupted mesosternal border, less punctate integuments and several other details. From seneicoUis it differs altogether in the structure of the prosternal striae and in elytral punctuation. The apical carina of the pygidium is at all times feeble and occasionally becomes obsolete. S. SOCillS. — Oblong-oval, piceous-hlack, highly polished, only moderately convex. Head feebly but densely, subrugosely punctate, the marginal stria obsolete ; clypeus rather short and broad. Prothorax more than twice as wide as long, the sides broadly, rather strongly arcuate, becoming almost parallel near the base, marginal stria fine, distinct ; disk minutely, sparsely punctulate, becoming broadly deeply strongly and densely punctate sublaterally, and nar- rowly along the basal margin. Elytra one-half longer than the prothorax, a little wider, slightly swollen laterally toward base ; marginal stria coarse but feeble, inferior, not attaining the middle of the apices ; internal subhumeral represented by a short deep stria behind the middle ; oblique humeral deep, distinct and straight ; four dorsals strong, evenly, feebly arcuate, scarcely punctate, long, almost exactly equal in length and attaining apical third, only slightly hooked at base, the fourth joining the sutural which is distinct to the apex ; punctures strong but sparse, extending beyond the middle in the first three interspaces gradually becoming very fine, along the suture not extend- Coleopterologiral Notices, V. 56T ing much beyond apical third. Pygidia strongly, moderately coarsely, very densely punctate. Prosternum strongly convex but not compressed, the strije rapidly and strongly ascending ; latero-snbapical fovese small but deep, well defined ; sides of the uiesosternnm strongly convergent ; apical stria entire. Anterior tibiae triangular, not very wide, finely but strongly, rather closely serrulo-spinose externally. Length 1.9-2.7 mm. ; width 1.4—1.9 mm. Utah (southwestern). Mr. Weidt. To be associated with convexiusculvs and minvtvs, resembling- the former in its long dorsal striae but differing- in the disposition of the eiytral punctured areas; from minutus it differs in its much longer dorsal strise. Two specimens, differing greatly in size. S. lentils. — Oval, strongly convex, highly polislied, black with pronounced seneous lustre ; legs rufesceiit. Head minutely but strongly, closely punctate, with a small but distinct puncture in the middle near tlie base ; marginal striae obsolete above the eyes. Prothorax a little more than twice as wide as long, the sides strongly convergent, broadly, evenly arcuate from base to apex ; apical angles narrowly rounded ; marginal stria distinct ; disk very minutely, sparsely punctulate, gradually more closely anteriorly, abruptly coarsely and very densely punctate near the sides and narrowly along the basal margin. Elytra not quite twice as long as the prothorax, and, at basal fourth, much wider, extremely, minutely, sparsely punctulate, somewhat abruptly, rather coarsely and densely punctate behind, from basal two-fifths near the first dorsal, to apical two-fifths near the suture ; marginal stria deep, inferior, nearly straight; outer subhumeral distinct, separated from the marginal; oblique liumeral coarse and deep, continued at some distance behind by the inner sub- humeral, which is short and feeble ; dorsals coarse, the first and third equal, extending nearly to apical two-fifths, second and fourth equal but slightly shorter, the latter broadly arched at base joining the entire sutural ; trans- verse apical stria nearly attaining the suture. Pyyidia finely but deeply, densely and evenly punctate. Prosternum evenly couvex, the strise distinct, rapidly ascending, the foveie deep ; mesosternum finely punctate, sparsely in the middle ; apical stria entire, transverse ; suture crenato-punctate. Ante- rior tibiae with about seven long and very acute, anteriorly inclined, serriform teeth. Length 3.5 mm. width 2.5 mm. California (Truckee — elevation 6000 ft.). Allied somewhat to insertus, but differing altogether in the punc- tuation of the pronotum and elytra, and in the wideh^ distant and isolated external subhumeral stria. 8. opacellus. — Oval, strongly convex, deep black, dull or feebly shin- ing. Head rather finely but strongly, very densely punctate, without trace of the subbasal puncture ; marginal stria obsolete, not distinct even subapi- cally. Prothorax twice as wide as long, trapezoidal ; sides moderately arcuate, visibly more so toward apex ; marginal stria tine ; punctures not very coarse 568 Goleopterological Notices, V. liut deep and dense throughout, gradually scarcely larger but extremely dense and contiguous at the sides, also coarser along the basal margin. Elytra at basal fourth quite distinctly wider than the prothorax, not quite twice as long ; punctures close throughout, fine near the base, gradually, at about basal third, becoming coarse, very deep, extremely dense and subaciculate to the apex ; marginal stria inferior, extending along the apex to the suture ; outer sub- liumeral very close to the marginal but not confluent ; oblique humeral fine, generally joining the inner subhumeral, which extends to apical fourth ; dorsals moderate, acute externally, punctulate internally, nearly straight, gradually decreasing in length, the first extending to apical third, the fourth to or slightly beyond the middle, abruptly arched at base joining the entire sutural. Pygidia rather finely but deeply, extremely densely punctate. Pro- sternum convex, the striae remote, rapidly ascending ; surface finely, extremely densely and deeply punctate ; subapical fovese deep; mesosternum sparsely punctate, the marginal stria entire. Anterior tibise with five or six low broad and oblique serrulalions. Length 3.3-3.7 mm. ; width 2.3—2.4 mm. California (Humboldt Co.). This species is closely allied to insertvs, but differs greatly in its deep black, less shining, more coarsely and much more densely punctate integuments, and very much in the structure of the an- terior tibiae, which, in insertus, are armed externally with a close- set series of long slender erect and spinuliform denticles. In in- sertus, also, the external subhumeral stria is not visible, being perfectly confluent with the marginal stria throughout its length. Three specimens. S. crilbrillll. — Evenly oval, strongly convex, black, the legs just visibly picescent; lustre moderately shining, the narrow interspaces between the punctures polished. Head finely but strongly, very densely punctate, the marginal stria feebly traceable at each side of the epistoma, which is much wider than long. Protliorax rather more than twice as wide as long, the sides not fimbriate, strongly convergent and feebly, almost evenly arcuate from base to apex ; marginal stria fine ; disk rather coarsely deeply and very densely punctate throughout, the punctures separated by nearly their own diameters toward the middle. Elytra nearly as long as wide, three-fourths longer than the prothorax, and, at basal fourth, but little wider ; sides broadly, evenly arcuate ; disk rather coarsely, very deeply and densely punctate, the punctures longitudinally subcoalescent except near the scutellum; marginal stria strongly inferior, almost straight, continued along the apex to the middle of each elytron ; outer subhumeral almost obsolete but distinct from the mar- ginal ; inner subhumeral represented by a short stria behind the middle ; oblique humeral distinct ; dorsals coarse but scarcely at all punctate, only very feebly arcuate, the first extending to apical fourth, the fourth to apical third, the latter abruptly, transversely hooked at base nearly to the scutel- lum ; sutural obsolete in basal fourth, almost attaining the apex. Propyyidium Coleopterological Notices, V. 569 very short, finely closely punctate, feebly subcarinate in the middle ; pygi- dium large, vertical, feebly convex, a little more coarsely and very densely punctate. Prosternum transversely convex, finely, feebly punctate, the striae only distinct at the sides anteriorly ; foveae deep. . Mesosternum feebly sinu- ate, more coarsely but not very densely punctate ; apical stria entire. Ante- rior tibiae with six or seven acute triangiilar external spines. Length 3.3 mm. ; width 2.4 mm. Wyoming- (Cheyenne). Also related to insertus and especially opacellus, but differing in the still coarser sculpture and in the obliterated basal part of the sutural stria. S. detractus. — Rather broadly oval, strongly convex, black, polished. Head finely, closely punctate, the marginal stria feeble but long and oblique subapically, obliterated near the base. Protlwrax more than twice as wide as long ; sides very strongly convergent, feebly arcuate, more so near the apex ; marginal stria distinct ; disk rather finely but deeply and conspicuously — though sparsely — punctate, the punctures not distinctly larger but rather dense near the sides, a little coarser near the base only in tiie middle. Elytra three-fourths longer than the prothorax, and, at basal fourth, quite distinctly wider, finely, remotely punctulate toward base, gradually rather coarsely, deeply but sparsely punctate in apical two-thirds near the suture, to apical fourth near the end of the second dorsal ; marginal stria inferior, extending along the apex to the middle of each elytron ; outer subhumeral scarcely dis- tinct from the marginal ; oblique humeral with one or two uneven internal appendages ; inner subhumeral represented by a short stria behind the mid- dle ; dorsals strong, feebly arcuate, slightly crenulate internally, the first tliree extending to about apical third, the fourth scarcely behind the middle, broadly hooked at base to the suture, the sutural stria only distinct in median third. Pygidia rather finely deeply and densely punctate. Sterna minutely and remotely punctulate, the prosternum broadly convex, the striae remote, strongly ascending, the foveae distinct ; mesosternal stria fine but entire at apex ; transverse suture strongly crenato-punctate. Anterior tibiae with seven or eight small close-set and acute, spiniform teeth. Length 2.2-2.(5 mm. ; width 1.7-1.9 mm. Colorado ; Kansas. Allied to laridus, differing greatly however in its more broadly oval form and minute punctulation of the mesosternum, this being coarsely and conspicuously punctate in laridns ; the latter species, in addition, has the outer subhumeral stria widely separated from the marginal. Each elytron seems to have an obsolete impression in the middle near the sutural stria. One specimen has the first dorsal stria very short, abbreviated at the middle on both sides of the body; it is simply a deformity however. My first specimen Annals N. Y. Acad. Sci., VII, Dec. 1893.— 37 570 Coleoplerological Notices, V. was picked up in the streets of Denver, during- a casual visit some years ago, and it has since been taken by Mr. Wickham at Greeley. S. contractus. — Narrowly obloiig-oval, moderately convex, highly pol- ished, piceous-black, with a \ery feeble seiieous lustre. Head finely, closely punctate, the punctures rather rugose anteriorly ; marginal stria wholly obso- lete ; antennal emarginations bisinuate. Prothorax a little more than twice as wide as long, the sides feebly convergent and arcuate near the base but becoming more so near the apex ; marginal stria fine, feeble ; disk finely but strongly and remotely punctate, the punctures less remote anteriorly and distinctly closer but not dense and not much larger near the sides, coarser at base near the middle. Elytra three-fourths longer than the prothorax and slightly wider at basal fourth, strongly, remotely but not very coarsely punc- tate, the punctures distinct at base, becoming gradually less remote and some- what larger toward apex ; marginal stria fine, gradually evanescent along the apex ; outer subhameral fine but distinctly diverging from tlie marginal ; oblique humeral feeble ; inner subhumeral rather long, oblique and uneven ; dorsals somewhat fine, distinctly but finely punctate, subequal, extending to about the middle, the third slightly, fourth broadly, hooked at base, the latter not extending to the middle, sutural altogether untraceable in basal third. Pygidia very finely, extremely densely punctate. Prosternum evenly but strongly convex, the strise rather approximate behind, rapidly ascending, the parallel apical parts twice as distant as the basal ; foveje elongate and feeble. Anterior tibise finely, closely serrato-spinulose externally. Length 2.0 mm. ; width 1.4 mm. Arizona (Tu(;son). The single specimen before me represents a species which is also allied to laridus, but distinguishable readily by its sparser and coarser punctuation, more approximate basal part of the prosternal striae, and by the longer sutural stria, which fully attains the apical angles ; it also differs in its stronger and rather denser sculpture of the pygidium. S. intritus. — Stout, oblong-oval, convex, dull, black, the legs dark rufo- testaceous. Head strongly, densely punctato-rugose, the clypeus still more densely and finely ; margins of the front near the clypeus almost transverse ; marginal stria obsolete. P/o/Aorax a little more than twice as wide as long; sides feebly convergent and slightly arcuate, gradually much more convergent and broadly arcuate beyond the middle ; marginal setse short ; lateral margin broadly arched throughout the length when viewed laterally ; stria fine, dis- tinct ; disk strongly, rather densely punctate throughout, the punctures finer toward the middle, extremely dense and somewhat rugose toward the sides. Elytra somewhat prominent at the sides near the base and slightly wider than the prothorax, one-half longer, much wider than long ; lateral stria inferior, coarse, straight, fine along the apex to the suture; outer subhumeral distinct. Coleopterological Notices, V. 571 distant from the lateral ; oblique humeral fine ; inner subhumeral isolated, short, strongly oblique, at about the middle ; dorsals rather fine, acute ex- ternally, finely punctate within, one to three gradually longer, the first extending about to the middle, the third to apical third, fourth shorter, extending slightly behind the middle, broadly arched at base, joining the entire but fine sutural ; disk strongly, distinctly punctate throughout, the punctures small and sparse near the scutellum, gradually coarse dense and aciculate behind. Pyyidia not coarsely but deeply, extremely densely punc- tate. Prosternum acutely compresso-carinate, the strife fine, ascending, abbre- viated behind the fovese which are very small. Anterior tibiie mullispinulose externally, the spinules erect and short. Length 3.5 mm.; width 2.6 mm. California (San Diego). This fine species is allied to vestitus, but is larger and blacker, with the punctuation coarser and denser, and the integuments still more opaque throughout. The prosternal striae are shorter and abbreviated far behind the foveas, and the surface is more acute and compressed than in veatitus; in the latter, also, the apical stria of the elytra is abbreviated at outer third or fourth, and the punctures of the elytra become abruptly fine and excessively dense broadly along the apex. S. impunctellllS. — Broadly oblong-oval, strongly convex, polished, black, without aeneous lustre. Head impunctate, anuately and unevenly eroded anteriorly, surrounded at the sides and apex by a deep groove and beaded edge, rectangular at the sides. Prothorax twice as wide as long, the sides rather strongly convergent and nearly straight to apical third, then gradually broadly rounded to the obtuse apical angles ; marginal groove deep, distinct throughout the apex ; disk feebly and not densely punctato-rugulose, smooth in the middle except toward apex, coarsely closely and deeply punc- tate along the base. Elytra distinctly wider and three-fourths longer than the prothorax, completely devoid of all trace of punctuation at any part ; marginal stria deep, not coarse, abruptly abbreviated at outer third of the apex ; outer subhumeral fine, distant from the marginal ; striae throughout as in sphieroides, except that the fourth is distinctly shorter than the third, the sutural broadly interrupted near the apex. Propygidium transversely bi- impressed and subimpunctate in basal half, the punctures apically very fine, dense; pygidium very finely, evenly, not densely punctate. Prosternum with the two almost entire approximate striae rapidly divergent behind ; lateral convergent carinse strong, the subapical foveas deep, rounded ; mesosternum finely, sparsely punctate, the apical stria deep, entire ; transverse suture punctate ; metasternum with a clearly limited, transverse, strongly and con- fusedly punctured band posteriorly. Length 4.2 mm. ; width 3.0 mm. Indiana. In general form and structure this species is a close ally of sphae- roides, but it differs greatly, not only in its larger size and wholly 572 Coleopterological Notices, V. impunctate elytra, but in the more strongly margined front and very radically in the serrulation of the anterior tibiae, which in the present species have about six strong triangular external teeth, in- creasing in size and prominence toward apex; in sphaeroides the teeth become broader and almost obsolete toward apex. The meso- sternum in the form alluded to is much more coarsely and closely punctured. S. laxatus. — Oblong-oval, convex, polished, black, without aeneous lustre. Head impunctate, strongly margined at the sides and apex, the lateral angles right ; surface with a feeble and unevenly eroded chevron, ending behind in the subbasal puncture which is visible in many other unrelated species. Pro- thorax barely twice as wide as long, the sides rather strongly convergent, very feebly and evenly arcuate from base to the apical angles, which are broadly, transversely rounded ; margin strongly striate, feebly sigmoid viewed later- ally, distinct along the apex ; disk very feebly sparsely obliquely and sub- rugosely punctate, the lateral margin rather broadly smooth posteriorly ; cen- tral parts broadly smooth and unsculptured ; basal margin closely coarsely and deeply punctate. Elylra throughout nearly as in fraternus, except that the outer subhumeral is more distinct from the marginal stria, the fourth dorsal a little shorter, the sutural wholly obsolete just behind the middle and not even traceable further, and the punctures of the posterior area finer and very much less dense. Propygidium feebly Impressed and subimpunctate throughout the width in basal half, with a median cariniform interruption, finely, closely punctate posteriorly ; pygidium very finely, sparsely punctate, closely so near the sides anteriorly. Prosternal striae abbreviated at apical third, gradually divergent throughout posteriorly, more rapidly behind ; lateral converging carinse very strong, arcuate ; subapical fovea? small, deep ; mesosternum minutely, remotely punctulate, the apical stria entire. Anterior tibiae with five or six erect subacute teeth, becoming much stronger, though still longer than wide, toward apex. Length 3.9 mm. ; width 2 8 mm. Florida. Allied closely io fraternus, but a little larger than the largest of that species, with finer, much less dense elytral punctures and stronger but less numerous external denticles of the anterior tibite. In fraternus the sutural stria can always be distinctly traced to the apex. S. propensus. — Oblong-oval, convex, polished, dark piceo-rufous, the legs paler. Head distinctly margined at the sides and front, scarcely at all punctate, but with a transversely arcuate subapical line. Prothorax twice as wide as long, the sides moderately convergent, broadly, feebly arcuate ; disk sculptured almost exactly as in lucidxdus. Elytra slightly wider and one-half longer than the prothorax ; lateral stria distinct and broadly arcuate ; outer subhumeral not visible ; oblique humeral coarse ; inner subhumeral distinct, Coleopterological Notices, V. 573 very oblique ; dorsals distinct, the first extending almost to the apex, arcuate behind, two to four abbreviated far behind the middle, the latter arched at base, joining the sutural which is entire but faint ; punctures not fine but sparse and very shallow, extending, near the suture, fully to basal fourth. Pygidia rather finely, very densely and somewhat unevenly punctate. Pro- sternal striae as in hcidulus. Anterior tibise with three very large external teeth. Length 1.9 mm. ; width 1.4 mm. California (San Diego). This species greatly resembles a very small hicididus, but is dis- tinguishable at once by its small size and by the elytral punctured area advancing well toward the base. Both this species and the next differ radically from lucid^dus in having the pronotal hypo- mera feebly indexed, almost horizontal, coarsely, densely punctured and clothed with long coarse pubescence which bristles also along the sides. In lucidulus the hypomera are strongly inflexed, smooth and glabrous. S. servilis. — Oval, strongly convex, polished, rufo-piceous in color. Head impunctate, with an arcuate subapical transverse line, strongly margined at the sides and apex ; clypeus feebly sculptured. Prothorax about twice as wide as long, the sides strongly convergent and broadly arcuate from base to apex; marginal stria strong ; disk sparsely, rather finely but strongly punctate to- ward the sides and apex, broadly impunctate behind the middle, moderately punctate along the base ; punctures only feebly rugiform. Elytra near the base slightly wider than the prothorax, barely one-half longer, the punctures fine, sparse, not entering any of the iiiterstriae ; extending near the suture about to basal third ; external stria strong, arcuate toward base ; outer sub- humeral wanting ; inner feeble, oblique, separated from the oblique humeral, which is strong ; dorsals distinct, the first nearly attaining the apex but becoming fragmentary and feeble behind, second to fourth abbreviated at the middle, the latter broadly arched at base, joining the sntural which is entire but fine. Pygidia not coarsely but deeply and rather closely punctate. Pro- sternal strije nearly as in lucidulus. Anterior tibise strongly tridentate, with some long distant hairs externally toward base, and a fringe of very long close-set hairs internally toward apex ; anterior femora with a lower fringe of long broad flattened hairs. Length 2.0 mm. ; width 1.4 mm. Texas (Galveston). Allied to the preceding, but readily distinguishal)le by its finer and sparser punctuation, longer prothorax with more convergent sides, shorter elytral strise, more evenly oval and less oblong form and many other characters. The three large teeth of the anterior tibiae in this and the preceding species are formed principally by enormous inset spines, shortened and broadly rounded at tip. In 5*74 Coleopterological Notices, V. both of thepe species the spines of the intermediate and posterior tibiae are nearly as in lucidulus but less close-set. The anterior tarsi are peculiarly modified in this and possibly allied species, the first four joints each having beneath a long thin transparent and spatuliform appendage ; this is a common character also in the American species of Pachylopus. ACRITU8 Lee. The following species belongs near Jioridae, but differs in having a distinct scutellum, of which there is no trace whatever in the latter: — A. caBlator n. sp. — Oval, moderately convex, polished, piceous-black. Head finely, sparsely punctulate, more distinctly so on the large epistoma. Prolhorux but little more than twice as wide as long, the sides broadly arcuate and convergent from base to apex ; marginal stria very fine, continuous along: the apex ; punctures fine and rather sparse, the disk with a transverse line of punctures near the base, obsolete at lateral sixth, abruptly and anteriorly arched in less than median third. Scutellum equilateral, small. Eltjtra a little wider than the prothorax and about twice as long, evenly rounded at the sides, the apex truncate, three-fifths of the maximum width ; inflexed flanks with a fine strong and entire stria ; disk without trace of striae ; punc- tures fine, sparse, those toward apex each with an anterior striiform prolonga- tion. Propijgidium minutely, sparsely punctulate; pygidium not distinctly punctulate. Prosternum nearly twice as long as its median interstrial width, the striae about equally and strongly divergent toward base and apex; meta- sternum large, finely, sparsely punctate, without lateral striae, the post- mesocoxal plate rounded behind. Lpgs slender ; anterior tibiae not dilated. Length 0.9 mm. ; width rather less than 0.7 mm. Indiana ? A single specimen from the Levette cabinet. The species differs fvom floridae in its rather more narrowly oval form, and from all other species most closely allied, in the strong anterior arcuation of the transverse chain of pronotal punctures. In the position and extent of the antennal fossae and structure of the anterior tibiae, as well as prosternal and elytral structure, this genus is wholly dif- ferent from Bacanius. In the latter the antennal fossa; are not at all defined, the antennge being merely protected under the folded legs iii the very large crural excavations. I have before me several specimens from the Catskill Mts., New York, which seem to be referrable to cribripennis Mars. ; the elytra are more inflated toward base than in exigmis, and, if the identifi- cation is correct, the two forms are specifically distinct. Coleopterological Notices, V. 575 PLEGADERUS Erichs. This is one of the most peculiar genera of the Histeridse, although there are many singular forms which at first sight appear to be more isolated ; it is generally found however, that the divergence in these cases is less real than apparent, the external organs and appendages of the body merely being specialized in various direc- tions. Here there is a radical difference in the formation of one of the most important of the fundamental segments of the body, prob- ably accompanied by corresponding modification of the internal anatomy. The division of the prothorax into two transverse lobes is met with in some other widely separated groups, such as the Paussidge, but in the present family all forms leading up to or fore- telling this peculiarity have seemingly disappeared, so that it is scarcely possible to reason upon its true etiological significance.' The deep diverging fossae of the prosternum are obviously an ex- treme development of the usual prosternal striae, but the transverse excavation uniting them is, as far as known to me, without any suggestion of parallelism in the entire family. I dwell with some emphasis upon this character because it has never been given the weight which apparently belongs to it. The genus should in fact be separated rather widely from those with which it is now asso- ciated. The species are moderately numerous in the United States, and may be distinguished by the following table : — Anterior prosternal lobe longer than wide, more or less acutely rounded behind, and strongly and rather closely punctate ; punctures of tlie elytra rounded and not longitudinally confluent ; transverse pronotal sulcus always deep and conspicuous. Punctures of the elytra not very dense, distinctly separated ; apical lobe of the pronotum much shorter than the basal. Margin of the pronotum broad, less convex. Meso-metasternal plate densely, coarsely punctate sayi Mars. Meso-metasterual plate more finely and sparsely punctate. consors Horn. Margin of the pronotum narrower and more convex ; entire body narrower and less depressed, piceous-brown, polished, sparsely and coarsely sculptured frateruus Horn. 1 Tile transverse row of prosternal foveas in Glymma does not bear much resemblance to the division in Plegaderus, for there is no sign of a division upon the dorsal surface. Glymma should probably be referred to the Histrini, the fovese being the delimiting line of the prosternal lobe. 576 Coleopterological Notices, V. Punctures of the elytra extremely dense, very narrowly separated. Prosternal grooves narrow behind, the intermediate posterior lobe wide and distinct ; elytral punctures small ; pronotum less unequally divided. rigidus n. sp. Prosternal grooves very wide behind, the enclosed posterior lobe minute, compressed and subcariniform. Pronotum closely punctate throughout, only a little more finely so ante- riorly ; lateral margins broad cribratllS n. sp. Pronotum finely, closely punctate anteriorly, coarsely and much more sparsely so behind ; lateral margins narrower Iliolesflis n. sp. Anterior prosternal lobe large but shorter and broader, not quite as long as wide, very remotely punctate ; posterior lobe minute and subobsolete ; elytral punctures longitudinally confluent ; sulcus deep. transTersiis Say. Anterior lobe very small, wider than long, the posterior almost obsolete. Pronotum with the transverse line distinct throughout; dorsal punctuation fine and remote ; larger species IlitidllS Horn. Pronotum with the transverse sulcus almost completely obliterated ; sculp- ture coarse and not dense; size very small 1)ar1)elini Mars. Of sayi and coiisors I have single examples, taken in Indiana and Arizona respectively, of fraternva a large series taken in various localities in California. Tran.^versiis occurred abund- antly, and barbelini in smaller number, under the bark of unde- composed stumps at Houston, Texas, the former also at Asheville, North Carolina. My small series of nilidits is from Siskiyou, El Dorado and San Diego, California, the single example from San Diego, given me by Mr. Dunn, not differing in any way from the others. P. rigidllS. — Narrowly oblong-ova), moderately convex, shining, black, the pronotum feebly picescent ; legs and antennal club pale ; all the punctures bearing minute setae. Head finely, somewhat closely punctate; front only very feebly concave. Prolhorax two-fifths wider than long ; sides subparallel, broadly rounded and feebly convergent toward apex, broadly sinuato-parallel in basal half; lateral groove deep, entire ; marginal space rather wide, some- what feebly convex, strongly, densely punctate ; transverse sulcus deep, the segments convex, the anterior only slightly, though distinctly, shorter than the posterior, equally finely, deeply punctate, the anterior rather closely, the posterior a little more sparsely. Klytra feebly inflated toward base, quite distinctly wider than the prothorax and one-half longer, not very coarsely but strongly and very closely punctate, with two short feeble and oblique basal strise externally ; suture elevated except near the scutelluni ; infiexed flanks devoid of stria or carina. Pi/riiclia rather finely but strongly, very densely jiunctate, the propygidiuni less densely so ; punctures distinctly setnlose. Under surface coarsely, rathei' closely punctate throughout; posterior lobe Coleopterological Notices, V. 577 of the prosfernum a little longer than wide, large, distinct, suhtruncate ante- riorly. Mesosternum triimpressed between the coxae, the oblique groove of the metasternum fine and striiforra. Anterior tibiae dilated and thinner exter- nally toward apex. Length 1.25 mm. ; width 0.7 mm. Utah (southwestern). Readily distinjruishable from the two following species by the narrower form, finer sculpture, prosternal structure, and less un- equally divided pronotum. A single specimen, recently taken by Mr. C. J. Weidt. P» CribratllS. — Somewhat broadly oblong-oval, moderately convex, shin- ing, black, the prothorax scarcely perceptibly picescent ; punctures extremely minutely setigerous. Head strongly, closely punctate, the supra-antennal prominences feeble. Prothorax nearly one-half wider than long, the sides parallel and feebly sinuate to apical third, there broadly rounded to the apex ; marginal stria strong and sinuate toward base ; inner marginal strong, straight, flexed outward at base ; interspace broad and feebly convex ante- riorly, strongly, densely punctate ; discal sulcus strong, the segments convex, the anterior three-fourths as long as the posterior, both deeply, closely punc- tate. Scutellum small, triangular. Elytra not quite as long as wide, rather abruptly tumid at the sides behind the humeri and slightly wider than the prothorax, about one-half longer, the oblique basal strise feeble ; punctures rather coarse and very dense ; suture distinctly, acutely elevated ; inflexed Hanks deep but not modified, the lower margin broadly angulate. Pygidia strongly, closely punctate, the propygidiura less densely so. Under surface coarsely, densely punctate, the punctures more or less longitudinally sub- confluent. Hypomera deeply impressed internally, the subapical internal emargination broadly rounded. Posterior lobe of the prosternum very small, narrow, feebly punctulate, tuberculiform and compressed; median line of the mesosternum feebly impressed. Length 1.4 mm. ; width 0.85 mm. Colorado. This distinct species may be known at once by its dense cribrate sculpture and small posterior lobe of the prosternum. P. molestlis. — Rather broadly oblong-oval and convex, polished, dark piceous-brown, the prothorax dark rufous ; legs and antennal club pale. Head finely but strongly, moderately closely punctate, the antennal promi- nences rather feeV)le. Prothorax about one-half wider than long, the sides subparallel and feebly sinuate in basal two-thirds, then broadly arcuate and convergent to the truncate apex ; inner lateral groove strong, the marginal surface rather narrow, convex, strongly and closely punctate, becoming almost obsolete at base between the widely expanded marginal and lateral grooves ; discal sulcus very deep, the segments convex, the anterior rather more than three-fourths as long as the posterior, finely but strongly, evenly and closely punctate, the posterior rather sparsely and unevenly so, the punctures much 57B Goleopferological Notices, V. coarser near the base. Eli/tra distinctly shorter than wide, broadly, evenly inflated and rounded at the sides toward base, distinctly wider than the pro- tliorax but scarcely one-half longer ; oblique basal strise very short but deeply eroded ; suture acutely elevated ; indexed flanks not striate ; punctures coarse, circular, deep, perforate, separated by rather less than their own widths. Pygidia somewhat coarsely and closely punctate throughout. Under surface very coarsely, rather closely but not confluently punctate; hypomera coarsely, deeply concave ; posterior lobe of the prosternum vt^ry small, rather feeble, tuberculiform, bearing a few rather long setiform hairs. Legs short; anterior tibiae somewhat abruptly dilated, externally rounded and with seven or eight short erect acuminate spicules in apical two-fifths. Length 1.2-1.3 mm. ; width 0.7-0.75 mm. California (Lake Tahoe). The dense cribrate sculpture and minute posterior lobe of the prosternum will enable one to separate this species at once from fraternuK, which occurs abundantly in the same region, and, from cribrafus, it may be readily known by its smaller size, shorter elytra — more rounded at the sides and more rapidly narrowed be- hind,— more narrowly margined and more unevenly sculptured pro- notum, pale coloration and several other characters. PARNIDiE. The Parnida; are closely related to the Ileterooeridae, and those genera allied to Dryops display, in addition, an unmistakable affinity with the Elateridae. Their life habits are so obscure that probably only a somewhat small proportion of the species are known at present, and the number of genera is very large in proportion to the species. PSEPnEXUS Hald. The species known to me may be arranged as follows: — Impression of the head not longitudinally divided ; elytra uniform in colora- tion. Sides of the prothorax strongly convergent, the apex not more than one-half as wide as the base ; antennae longer {trentonensis Zimm.). lecontei Lee. Sides of the prothorax feebly convergent, the apex much wider, two-thirds to three-fourths as wide as the base. Sides of the prothorax broadly rounded and subparallel toward base, more convergent and nearly straight anteriorly falli n. sp. Coleopterological Notices, V. 5t9 Sides evenly and feebly arcuate from base to apex... velllticollis n. sp. Impression of the head longitudinally divided ; elytra pale at base. baldemani Horn. The characters of haldemani are taken from the original descrip- tion. Ps. fa.lli« — Rather depressed, subcuneate, wider behind, black, the second antennal joint paler ; legs scarcely paler ; integuments feebly shining, very finely, closely sculptured, the pronotal punctures fine, obscure, those of the elytra more distinct ; vestiture dense, consisting of very small coarse dense and decumbent silvery hairs, intermixed with short stifi" and sparser erect setae. Head one-half as wide as the pronotal base, the eyes very convex and prominent ; front broadly, evenly concave ; antennae as long as the head and prothorax, the two basal joints thicker, the first much longer than the second, remaining joints subequal in thickness, except the sixth which is just visibly larger, outer joints gradually shorter and a little more closely united ; maxil- lary palpi long. Prothorax nearly twice as wide as long, the apex truncate, two-thirds as wide as the base, the latter transverse, deeply and evenly bi- sinuate ; basal angles not rounded, directed posteriorly, less lateral than the sides at basal fourth where the width is greatest ; disk convex toward the middle, even. Scutellum nearly as long as wide, rounded, pubescent. Elytra at base as wide as the prothorax, much wider beliind, nearly three times as long, one-half longer than wide ; humeri slightly rounded to the thoracic angles ; disk feebly and rather broadly elevated along the suture, somewhat tumid near the base, the humeri prominent ; impressed lines feebly traceable posteriorly. Legs moderate ; femora stout ; tibiae slender, finely carinate ex- ternally, the carina becoming broader and feeble, glabrous and longitudinally, feebly strigilate toward apex ; tarsi slender, moderate in length. Length 3.8 mm. ; width 1.9 mm. California (Los Angeles Co.). The trochantin of the anterior coxae is very large, nearh' as wide as the entire coxa. The type is a male and I have not seen the female. This species was recently alluded to by Mr. Fall as having been identified by me under the name lecontei Since remounting the single specimen, however, I find that it cannot be referred to lecontei, and take pleasure in giving it the name announced above. ,Ps. Telllticollis. — Moderately depressed, suboblong, feebly inflated behind, rather shining though finely, closely punctulate, black throughout, the legs only slightly paler ; pronotal punctures rather strong and dense anteriorly, becoming finer and sparse behind, sparse, fine and uneven on the elytra. Head small, scarcely one-half as wide as the pronotal base ; eyes con- vex ; frontal impression prolonged backward along the median line ; antennae about as long as the head and prothorax, the basal joint nearly twice as long 580 Coleopterological Notices, V. as wide, second but slightly wider and a little shorter than the third, remain- ing joints equal in width, feebly subserrate, slightly smaller and closer toward apex; maxillary palpi well developed, the last joint subsecuriforrn, rounded at apex, deeply canaliculate along the under surface at the cariniform outer edge throughout the length. Prothorax twice as wide as long, the apex fully two-thirds as wide as the base, the latter broadly, strongly bisinuate ; disk widest at the basal angles, convex toward the middle, the lateral edges nar- rowly reflexed. Scutellum a little wider than long, opaque, impressed. Elytra one- third longer than wide, broadly rounded behind, dehiscent at apex, broadly impressed in the middle, and obliquely from the humeri, to beyond the middle, with feeble traces of impressed lines. Legs rather short ; femora stout ; tibiae finely carinate externally ; tarsi slender, glabrous ; claws moderate, strongly arcuate, with an internal dentiform swelling near the base. Length 3.8-4.8 mm. ; width 2.0— '.7 mm. California (Mendocino Co.). I obtained a small colony of this species, almost motionless on the under surface of a stone near a running brook. The descrip- tion is drawn from the male, the female being larger, with the pro- notum dense and opaque velvety-black, the maxillary palpi much less developed, the last joint being small, obliquely oval, with the apex glabrous and polished, and the abdomen having only six seg- ments. The shape of the prothorax is altogether different from that of f alii, and the sexual differences in the palpi are remarkable, though probably more or less similar throughout the genus. LIJTROCHIJS Erichs. Our two species, both of which have long been known in colkc- tions, may be d,istinguished as follows: — Smaller, less elongate, the vestiture yellowish. Head small, not more than one-half as wide as the thoracic base. Sides of the prothorax more conver- gent from base to apex. Scutellum smaller, but slightly wider than long. luteiis Lee. More elongate-oval, the elytra acute and slightly prominent at apex ; pubes- cence darker. Head large, fully two-thirds as wide as the thoracic base. Prothorax much more than twice as wide as long, the apex only slightly narrower than the base ; sides just visibly convergent from base to apex, slightly arcuate ; disk broadly convex. Scutellum one-half wider than long, broadly ogival behind, very broadly arcuate at base. Remaining characters nearly as in luteus. Length 2.9-3.6 mm.; width l.fi-2.0 mm. Michigan laticeps n. sp. Laticeps is represented by a large series ; it is closely allied to luteus but must be regarded as distinct. Coleopterological Notices, V. 581 Certain features of the under surface of this genus are suggestive of the Histeridae. The glabrous intermediate tibiae and tarsi do not seem to have been I'eferred to in the books. PELOIVOMUS Erichs. The species of this genus are few in number ; the one described below is closely allied to obscurus, but is shorter, broader and paler in color. P, rilfescens n. sp. — Dark red-brown, stont, convex, densely clothed with very short coarse hairs and less densely with longer erect setse, the punc- tures fine but strong, extremely dense on the head and pronotum, less dense on the elytra, the latter with very feeble longitudinal impressed lines. Head two-thirds as wide as the pronotal base ; eyes large, convex and prominent, densely setose ; antennae nearly as in obscurus. Prothorax one-half wider than long, the sides feebly convergent from base to apex, broadly, feebly arcuate, just visibly sinuate near the basal and apical angles, the latter acute and anteriorly prominent ; disk evenly, rather strongly convex ; apex subtruncate, the base broadly, strongly bisinuate and also emarginate at the scutellum. Scutellum transverse, obtusely angulate behind. Elytra barely twice as long as wide, a little more than three times as long as the prothorax, acutely ogival behind, the suture broadly and feebly impressed on the posterior declivity. Under surface paler, the three pairs of coxae separated by exactly the same distance. Legs moderate, the tibial spurs short, stout, widely separated ; tarsi slender, the posterior two-thirds as long as the tibise. Length 5.5-6.3 mm. ; width 2.3-2.5 mm. Florida. Readily separable from obscurus by the more obese form, more widely separated middle coxas, more transverse and much more broadly angulate scutellum, and by the very narrow and not broadly angulate apical prosternal fissure behind the eyes. The type is a female; the male has the last joint of the anterior tarsi very feebly dilated but scarcely as strongly so as in obscurus. OBEROIVUS n. gen. Eyes, palpi and general structure nearly as in Pelonomus. In- termediate coxiB large, subglobular, contiguous, the metasternum forming an acutely elevated transverse and feebly arcuate ridge behind them, the mesosternum a transversely tumid, deeply and anteriorly excavated process before. O. ol>esU8 n. sp. — Broadly oblong-oval, convex, black ; palpi, tibiae, tarsi and abdomen toward apex rufescent, densely clothed with very short stiff 582 Coleopterological Notices, T. silvery hairs and long erect setae ; punctures fine but strong, very dense on the pronotum, smaller and much sparser on the elytra, the latter rather shining and with feebly impressed longitudinal lines. Head three-fifths as wide as the pronotal disk ; eyes large, prominent, densely pubescent ; antennte closely approximate, nearly as in Pelonoinus ; last joint of the maxillary palpi nearly twice as long as the third, slender, subfusiform, slightly thicker beyond than behind the middle, acuminate toward apex. Prothorax two-fifths wider than long, the sides very feebly convergent from base to apex, feebly arcuate, straight near the basal angles, broadly, strongly sinuate near the apical, the latter acute and obliquely, anteriorly prominent ; apex truncate; base trans- verse, deeply bisinuate, emarginate at the scutellum ; disk evenly convex, the side-margins acute. Scutellum well developed, a little wider than long, rounded anteriorly, strongly angulate behind. Elytra three-foui'ths longer than wide, barely three times as long as the prothorax, gradually feebly inflated behind, at base as wide as the protliorax ; apex broadly, obtusely ogival ; disk declivous behind. Prostetnum greatly developed before the coxae, broadly arcuate, the sublateral fissures behind the eyes open but short, tri- angular ; coxae rather widely separated, the process obtusely acuminate, cari- nate along the middle, received iu the deep mesosterual aperture. Legs short ; femora stout, densely pubescent ; tibiae and tarsi more sparsely clothed with longer flying hairs ; tibial spurs small, remote ; posterior tarsi two-thirds as long as the tibiae, nearly as in Pelononuis. Length 5.3 mm. ; width 2.5 mm. Tennessee (Memphis). Mr. Soltau. The structure of the intermediate cox^e and of the adjoining parts of the metasternum is so radically different from Pelonomus, that I am forced to separate this species generically, although its facies is completely that of Pelonomus. The type is a male, having the last joint of the anterior tarsi dilated, more broadly than in Pelo- nomus, gradually more inflated toward base and with its under surface sensitive, though only feebly pubescent. NARPUS n. gen. Body narrow, convex, the elytra striato-punctate. Head re- ceived rather deeply in the prothorax, the eyes moderately large, nude, distant, somewhat coarsely faceted ; antennse widely distant, inserted in fovese adjacent to the eyes ; epistoma large, feebly trape- zoidal with the angles rounded, the apex broadly sinuato-truncate ; suture fine, straight ; antennae and oral organs missing in the type. Prothorax long, the pronotum very declivous at the sides, almost vertical toward apex, without sublateral line, the margin acute, nar- rowly reflexed'; hypomera only iuflexed very slightly beyond the vertical, wide, the inner margin wide and thickened, still more so Coleojyferological Notices, V. 583 at the coxae, which are transversely oval, furnished with a distinct external trochantin, and separated by a little less than their own width, the process gradually narrowed posteriorly, flat, obtusely rounded behind, the sides continued forward along the well de- veloped prosternum to the anterior margin by diverging straight ridges ; apical lobe short, broadly rounded and deflexed. Interme- diate coxae very remote, the mesosternum with a shallow median pit which receives the apex of the prosternal process. Posterior coxae transverse, the upper margin not at all lamelliform, separated by about one-half the meso-coxal interval. Metasternum large, the parapleurae narrow, parallel. Abdomen with five subequal segments, the fifth a little longer, the third and especially the fourth suture strongly flexed posteriorly at the sides. Legs slen- der, moderately long ; tarsi very long, the posterior about as long as the tibi«, with the four basal joints elongate, the fifth slightly longer than the two preceding combined ; claws long, arcuate ; tibial spurs small, remote. This interesting genus is founded upon a single example, which I found dead and mutilated some years ago. It should be placed near Dryops, and diff'ers in having raised prosternal lines, in its much longer prosternum and distinct epipleurae ; the latter are dis- tinctly defined but narrow, not quite attaining the elytral apex and gradually slightly wider toward base. W. anglistlis n. sp. — Slender, very convex, black, the tarsi paler ; integu- ments shining, sparsely clothed with rather long coarse and decumbent silvery pubescence. Head only slightly visible from above. Prothorax nearly as long as wide, the sides feebly convergent and slightly arcuate from base to apex, the latter broadly arcuate, advanced beyond the greatly deflexed apical angles, which are acute and slightly prominent ; base closely fitted to the elytra, transverse, broadly evenly and feebly bisinuate, not at all emargiiiate at the scutellura, the angles acute but not exposed ; disk very convex, greatly de- ivous laterally, transversely biimpressed near the middle befoie the base, not very coarsely but deeply, perforately punctate, the punctures very dense laterally but well separated toward the middle. Scutellum moderate, as long as wide, ogival behind, parallel toward base, the latter truncate. Elytra very slightly inflated behind the middle, rather more than twice as long as wide, nearly one-third wider than the prothorax and scarcely three times as long, acutely triangular behind in apical third ; humeri somewhat broadly rounded to the prothorax ; disk gradually feebly declivous behind, with nine narrow but strong, even, coarsely and approximately punctate striae, the intervals nearly flat, minutely, confusedly, not densely punctulate. Length 3.0 mm. ; width 1.2 mm 584 Coleopterological Notices, V. California (Mendocino Co.), The small size, narrow form and complete absence of any scutellar modification of the basal lobe of the pronotum, will readily distin- guish this species from any Dryops known to our fauna. ELATERID.^. AI.AVS Esch. A. ZllllianilS n. sp. — Elongate, very convex, shining, black throughout, the upper surface with sparse patches of dense yellowish-white squamiform pubescence ; vestiture elsewhere less dense, black ; integuments finely closely and distinctly punctate, the punctures larger on the prothorax, becoming coarse and very dense anteriorly, the elytra with series of small but strong, close-set punctures, the two or three series nearest the suture not coinciding with the feebly impressed lines. Head impressed anteriorly, coarsely, densely punctate, the punctures intermingled with finer punctules ; vestiture in great part pale ; antennae scarcely extending to basal third of the prothorax, nearly as in gorgops Prothorax scarcely as long as wide, parallel, broadly and dis- tinctly arcuate at the sides, the ornamentation as in gorgops. Scutellum abruptly more declivous anteriorly. Elytra as wide as the prothorax and distinctly more than twice as long, the usual large black spot at the sides well defined and bordered anteriorly by a large solid patch of the pale pubes- cence. Under surface with some patches, more or less isolated, of pale pubes- cence near the sides ; presternum longitudinally canaliculate between the coxae. Length 33.0-44.0 mm. ; width 10.0-13.5 mm. Arizona. The three specimens before me represent a species allied to gorgops, resembling that species especially in the large uneven and isolated patches of pale pubescence, which are here still larger and less numerous. It differs greatly in general form and sculp- ture, the sides of the prothorax being nearly straight in gorgops, with the elytra scarcely twice as long, and with the elytral punc- tures very fine and sparse, the series composed of much smaller and more remote punctures, and coinciding \vith the feeble impressed lines. In zunianus the pronotum is finely but distinctly canalicu- late along the middle, and the eye-like spots are more distant from the edge and more approximate than in gorgops; the last segment of the abdomen is devoid of pale vestiture in the three specimens before me. Liisciosus Hope, with which gorgops is united by Candeze, is stated to be shorter in form than oculatus ; this is distinctly true Coleopterological Notices, V. 585 of gorgops, but in zvnianus the form is fully as elongate as in oculatiis. Note — Chalcolepidius hehrensi Cand., has been taken by Mr. Dunn at Benson, Arizona. THROSCID.E. PACTOPIJS Lee. The two species of this genus, which are indicated by the mate- rial in my cabinet, may be distinguished thus : — Very elongate, the elytra more than twice as long as wide ; prothorax strongly enveloping the humeri, the sides deeply sinuate anteriorly, as well as con- vergent; eyes larger, separated by about twice their own width. Length 4.6 mm. ; width 1.6 mm horni Lee. Less elongate, the elytra not more than twice as long as wide, the eyes rather smaller, separated by distinctly more than twice their own width ; protlio- rax a little less strongly enveloping the elytral humeri, the sides strongly convergent to the apex but only very feebly sinuate. Remaining characters nearly as in horni, the intermediate coxae very slightly more widely sepa- rated. Length 3.2-4.2 mm. ; width 1.3-1.6 mm. California (San Francisco and Sta. Cruz Cos.) fuchsi n. sp. Of fiichsi, I have three specimens, similar among themselves but ditfering greatly in size; they Mere very kindly presented to me b}' Mr. Chas. Fuchs of San Francisco, to whom I take pleasure in dedicating an interesting addition to the family. My lour ex- amples of horni are more uniform in size, and are from Washing- ton State and Nevada; it is probably more boreal in habitat than fuchsi. CERAMBYCID.E. ABfCYLOCERA Serv. In general facies the species of Ancylocera are very similar among themselves, and the two separated below are identical in coloration ; they may be distinguished as follows : — Antennse of the female two-thirds as long as the body ; flanks of the prothorax transversely rugose as far as the coxse, where the plications abruptly ter- minate, the prosternum before the coxae very coarsely punctate. l)icolor Oliv. Annals N. Y. Acad. Sci., VII, Dec. 1893.— 38 586 Coleoplerological Notices, V. Antennae in the female one-lialf as long as the body ; tlanks of the prothorax simply punctate beneath, the prosttrnum much less coarsely punctate. Black, the elytra and abdomen red, polished. Head coarsely, strongly punctate, feebly impressed along the middle. Prothorax one-half longer than wide, the sides broadly arcuate, more convergent and feebly consti'icted near the base, the latter equal in widtli to the apex, both truncate ; disk coarsely, deeply punctate, the punctures formirg transverse rugae which are obsolete along the median line and gradually evanescent beneath. Scutellum small, impiinctate, the horizontal posterior part not carinate and not longer than wide. Elytra parallel, not quite twice as long as the prothorax, nearly two and one-half times as long as wide, narrowly truncate at apex, impressed and punctate nearly as in bicolor, but rather less densely. Length 8.5 mm. ; width 2.0 nmi. Florida breTicornis n. sp. In bicolor the transverse area behind the buccal o|)ening is more finely sculptured than in hrevicory}iii, and the transverse prosterual constriction is very much deeper ; hrevicornis is slightly the smaller of the two. TRACiilDIOlV Serv. The species of this genus may be known by the following charac- ters : — Third joint of the hind tarsi not longer, and but seldom visibly wider than, the second ; elytra corrugated. Antennae more or less pale, the swollen apices of the pale joints black and abruptly more densely pubescent. Antennae entirely black toward apex ; elytra strongly narrowed from base to apex ; large species, the black hairs of the pronotum and legs with a strong cobalt-blue reflection '. annillatlini Antennse pale throughout, the apices of all the joints black ; elytra parallel ; size s^maller, black ; the hairs without blue reflection ; hind tibiae moderately dilated and compressed atiripenne Antennae black throughout ; api^s of the joints feebly swollen but not more densely pubescent. Third joint of the hind tarsi scarcely shorter than the second ; posterior tibiae not distinctly modified ; elytra varying from black with a small fulvous spot behind the humeri to completely fulvous except at the basal margin COqiUlS Third joint small, very much shorter than the second ; posteiior tibiae broader, strongly compressed ; elytra fulvous throughout except at base fiilvipenne Third joint of the hind tarsi distinctly longer and somewhat wider than the second ; elytra not corrugated, parallel, each with three feeble and minutely costuliform lines ; pronotal punctures in the male minute and dense but becoming abruptly coarse in an apical band, the posterior transverse margin of wliich is multisinuate ; in the female minute and dense throughout. ariuatiini Coleopterological Notices, V. 587 Falvipenne Say, is not by any means a variety of coquus, but is si)ecifically distinct. Goquvs Liun. has the pronotum in the male rather coarsely punctured throughout, except near the base, but in tlie female very finely extremely densely so; this character may also be common to the other allied species, but cannot be verified at present because of their denser and longer vestitiire. The sexual disparity of armatum in pronotal sculpture is very remarkable. T. niiripeiine n. sp. — Parallel, convex, black, tlie elytra bright aureo- fulvous except at tlie basal margin ; pubescence dense, assuming the color of tlie integuments, recumbent on the elytra where it is dense and arranged oliliquely on the strong corrugations but x^-ry inconspicuous in the intervals, erect on the pronotum where it is short, not concealing the surface sculpture. Htad moderate, densely punctate, the antennal prominences acute ; antenna vt-ry slender, about one-half longer than the body, basal joint oval, twice as long as wide, three-fifths as long as the third, second slightly longer than wide, four to seven equal, a little shorter than the third, eleventh with the appendage as long as the basal part and feebly bent at apex. Prothorax a little wider than long ; apex slightly wider than the base, the acute and prominent lateral tubercles slightly behind the middle; disk opaque, feebly and finely 5-tuberculate, the median tubercle larger and polished ; punctures coarse, very dense, abruptly fine and extremely dense near the base. Scutel- lum. roughly punctate. Elytra three times as long as wide ; sides parallel, the humeri obtusely prominent; apex conjointly broadly rounded; disk of each with five strong narrow ridges, the fourth joining the fifth before the middle. Legs slendei-, the posterior much longer, with the tiliije soniewliat dilated and compressed. Length 14.0-20.0 mm. ; width 3.8-5.7 mm. Utah (southwestern); Arizona. The three specimens in my cabinet are males and I have not seen the female. This species is somewhat smaller than coquus, but all the species vary enormously in size. Among the eleven specimens of coquus in my cabinet there are only three females; the elytral corrugations in that species are always much wider and more feeble than in fulvipenne ; the form of the hind tibiae will however distinguish them at once. BAT¥LE Thom. B. cylindrella n. sp. — Narrow, cylindrical, polished, bright red throughout, the elytral suture not darker, post-sterna blackish ; legs pale, the tarsi black except near base and apex ; antennae rufo-testaceous, dark toward apex especially toward the apices of the joints ; vestiture very sparse, coarse, erect, not very long, pale luteous in color. Head finely, remotely punctate, almost completely impunctate before the antennae, the latter slender. 588 Coleopterological Notices, V. not quite as long as the body, the third joint one-third longer than the fourth. Prothoiux nearly as long as wide, the base and apex subequal, truncate ; sides parallel, evenly and strongly arcuate ; disk even, finely feebly and very remotely punctate. Scutellum small, impressed, scarcely darker. Elytralong, fully two and one-half times as long as wide; humeri slightly prominent; sides parallel and straight ; apices individually evenly and strongly rounded ; suture margined ; disk coarsely, sparsely punctate, the punctures less coarse toward apex. Legs slender, moderately densely clothed with rather short even pubescence ; hind femora slightly darker at tip ; tarsi slender, first joint of the posterior as long as the entire remainder, second rather more than twice as long as wide. Length 9.5 mm. ; width 2.3 mm. Texas (El Paso). The male serving as the type has the prosternum before the coxaB scarcely depressed but coarsely ver}' densely punctate and more densely pubescent, as in many species of Stenosphenus. 'i'his sexual mark exists also in B. sutxiralis, from which the present species ditfers in its more elongate form, shorter and coarser pubescence, which is pale and not black, less punctate head and more elongate legs. OXOPLIJS Lee. The differences between this genus and Crossidius are exceed- ingly slight, and it is probable that the tw^o will have to be merged at no distant day ; the type of ornamentation is identical in each. The following species differs from any of those hitherto described in the development of the fine elytral ridges, which are distinct very nearly to the apex. O. COCCineilS n. sp. — Moderately stout, convex, feebly shining, bright scarlet, the head, antennae, entire under surface between the anterior and posterior coxae, apical and basal beads of the prothorax, scutellum, basal margin of the elytra, and a common narrow sutural dash in apical half black ; pubescence pale, extremely short, sparse and inconspicuous, rather short sparse and blackish on the legs. Head coarsely densely and unevenly punc- tate ; antennae slender, about one-fourth longer than the body, the appendage of the eleventh joint scarcely more than one-third of the total length, with its apex abruptly concave internally and arcuately pointed. Prothorax one-half wider than long, the lateral tubercles acute and strong; basal bead very prominent at the sides ; disk very coarsely, closely punctate, with five large concolorous tubercles which are scarcely less punctate than the remainder of the surface. Scutellum finely, closely punctate. Elytra at base distinctly wider than the prothorax, fully four times as long ; sides distinctly conver- gent from the rather prominent humeri to the apex, which is truncate, the sutural angles acute and slightly prolonged ; disk very coarsely, closely punc- Coleopterological Notices, V. 589 tate, less coarsely so toward apex, and with three fine almost entire carinnles, narrowly impressed along each side of the suture toward base. Legs slender, the posterior long, with the tarsi fnlly three-fourths as long as the tibiae. Length 19.0-20.0 mm. ; width 5.7-6.3 mm. Utah (southwestern). The description is taken from three perfectly similar males, the sinfjle female, before me being slightly more robust, with more par- allel elytra, in which the narrow sutural dash of black becomes very broad, abruptly narrowed to the suture just before the middle, not extending to the edges except at apex. The antennae in the female are scarcely three-fourths as long as the body but not much stouter than in the male, and the posterior legs, and especially the tarsi, are decidedly shorter. This species belongs near coralliniis Lee. CROSSIDIUS Leo. C. Illandi n. sp. — Narrow, cylindiical, shining, bright rufous, the head and postpectus black ; elytral blue-black area extending from the base for a short distance, then abruptly contracted, extending narrowly along the suture, gradually becoming wider to the middle where it becomes parallel, extending with two-thirds of the total width to apical fourth where it is abruptly widened nearly to the lateral edges, thence extending broadly to and enveloping the apex ; pubescence long, sparse, erect and cineieous throughout. Head very densely, coarsely punctate ; antennse a little longer than the body in the male, two-thirds as long in the female, slender. Prothorar wider tl)an long, parallel and evenly rounded at the sides, evenly convex, coarsely punctate, the punc- tures very uneven, dense near the apex, sparse elsewhere. Elytra slightly wider than the prothorax, a little more than twice as long as the head and prothorax combined, each broadly and evenly rounded at apex without trace of truncature, reentrant at the suture, the angles rounded ; disk very coarsely punctate, the punctures everywhere distinctly separated and becoming but slightly less coarse toward apex. Prosternum before the coxje very coarsely punctate in the male, finely and inconspicuously so and less pubescent in the female. Length 7.7-9.5 mm. ; widtli 2.0—2.5 mm. Utah (southwestern). This beautiful little species is widely distinct from discoideus in its smaller size, narrower form and sparse punctuation, especially of the pronotum, and from pulchrior Bland — which does not appear to be exactly the same as discoideiis — it differs in the uneven pro- notal punctuation, and in the gradually and not abruptly anteriorly narrowed block area of the elytra. In discoideus the elytra are always feebly but perceptibly truncate at apex, and the pronotum is scarcely ever devoid of the two subapical black spots, of which there is no trace in blandi. Four specimens. 590 Coieoplerological Notices, V. XYLOTRECnUS Chev. The following species is allied to vndulalua. Say, but differs in the ninch broader bands before and behind the middle of the elytra, interrupted only at the suture. X. gemellus n. sp. — Moderately stout, convex, dark red-brown in color, densely clothed with short pubescence, generally dark in color but sulfusedly white at the apex of the pronotum and obliquely at the sides toward base ; on the elytra the white pubescence is sutfused at base throughout the width, and, on each elytron there is a short longitudinal line behind the scutellum, a short transverse discal line near the base, a broad and transversely lunate band at basal two-fift)is not produced anteriorly along the suture, a transverse internally dilated spot at apical tliird, and a more sufiused apical band. Head with the two short frontal carinse distinct ; antennae slender, filiform and equal throughout, two-fifths as long as the body, first four joints clothed with paler ashy hairs, third distinctly the longest, tenth fully one-half longer than wide. Piothorax wider tlian long, constricted and broadly pedunculate at base, coarsely and rugosely sculptured in short transverse confused ridges through- out. Elytra a little more than twice as long as wide, at base eqiial in width to the pronotal disk ; sides nearly straight, distinctly convergent from base to apex, the latter broadly arcuato-truncate and feebly oblique, the external angle obtuse but not at all rounded. Lrgs slender; basal joint of the hind tarsi strongly compressed and much longer than the remainder. Length 14.0-15.0 mm. ; width 4.0 mm. Indiana. From undaJat.is and its varieties this species may be known at once by the coarser sculpture of the pronotum, suffused pale pubes- cence at the base of the elytra throughout the width, much less prominent frontal caringe and several other features. The trans- verse bands are wholly different in form, being wider, and poste- riorly arcuate at the point where, in undulatus, they are anteriorly angulate. There can be scarcely any doubt of the distinctness of these species, although gemellus has possibly been regarded here- tofore as a variety of undulatus. Two specimens. CYRTOPIIORUS Lee. The two species may be distinguished as follows: — Larger and stouter, the pronotum compressed and prominent along the middle ; basal elevations of the elytra strong ; third antennal joint strongly spinose. verrucosus Oliv. Smaller and less convex, the pronotum not at all compressed ; basal elevations feeble; third antenna! joint briefly dentato-spinose within at apex. iusinuans n. sp. Coleoplerological Notices, V. 591 The second species makes one of the passages between Cyrto- phorus and Microclytus, but the third joint of the antennae in the latter is not in the least spinose, and the second is very nearly as long as the fourth ; the body and lej^s, also, are clothed with long flying hairs, which are almost, but not quite, wanting iu Cyrto- phorus. C. ilisiniiaiis. — Parallel, moderately convex, black in color ; antenn?e, except the basal joint, and the legs in part more or less indefinitely paler ; elytra rufescent toward base ; head and pronotum densely dull, the elytra shining. Head finely, densely sculptured ; eyes as in i-errucosu.i, the upper lobe not acute ; antennae slender, almost as long as the body, the second joint scarcely more than one-half as long as the fourth, the latter distinctly shoiter tlian the fifth, third nearly one-half longer than the fourth. Prothorax not quite as long as wide ; sides parallel, feebly arcuate, strongly convergent near the base, the latter much narrower than the apex ; disk finely, densely sculp- tured, the larger punctures isolated and defined by slightly elevated margins; pubescence short, decumbent and inconspicuous. EUjtra more than twice as long as wide, one-third wider than the prothorax and more than three times as long; sides parallel; apices narrowly truncate; angles not prominent; pubescent spots and bands as in verrucosus but with the basal line much less oblique, more oblique howevei- than iu Microclytus. Legx short, sleuder ; femora moderately clavate ; tibiae with short subdecumbent and uniform pubescence ; tarsi short, the basal joint not as long as the remainder. Length 6.0 mm. ; width 1.8 mm. Canada (Ontario). The characters given in the table will readily distinguish this species from ven'ucosiis ; in fact it much more closely resenibles Mici'oclytus go,zellula, butdiflers iu the characters which have been given to separate the two genera. A single example, probably male, EUDERCES Lee. E. exilis n. sp. — Moderately convex, pale rufous throughout, except the abdomen and apical half of the elytra, which are black ; head and pronotum alutaceous, minutely but strongly, evenly reticulate, not at all longitudinally strigose. Head flat above, rather coarsely, unevenly punctate, the eyes com- pletely divided, the upper lobe small, smooth, devoid of lenses except two or three near the upper angle; antennae slender, three-fourths as long as the body, the second joint scarcely twice as long as wide, about one-third as long as the third, a little shorter than the fourth, the latter much shorter tiian five to seven, which are equal, third joint with a strong and distinct internal spine at apex, the fourth with a minute spine. P)-othorax one-third longer than wide, the sides parallel and feebly arcuate in apical half, becoming 592 Coleopterological Notices, V, strongly convergent and arcuate toward base, the latter very briefly pedun- culate and scarcely more than one-half as wide as the disk; apex broadly arcuate ; disk impunctate, except in a large oblong-oval median area, where the punctures are small but strong, distinct and tuberculifoim ; interspaces perfectly smooth but dull. Elytra twice as long as wide, at base scarcely wider than the prothorax, gradually moderately inflated and more convex in apical half, together broadly rounded behind : basal tubercles feeble ; disk dull and with dense deep and polygonally crowded punctures in basal half, except at the humeri, feebly rugulose but shining behind, with a single transverse raised ivory band before the middle and interrupted at the suture. Legs moderate ; femora strongly swollen beyond the middle and again narrow at apex ; tarsi short. Length 4.25 mm. ; width 1.25 mm. Texas. The vestiture i.s very sparse, consistino: of some long erect pale hairs on the prothorax, a few longer near the base of the elytra, and numerous short erect pale ashy hairs on the posterior declivity. This species is stouter than reichei and may be known immediately by the spinose antennse. It is not at all closely allied to spinirornifi Chev. In reichei the pronotal punctures are confined similarly to a large discal patch, but the interspaces are finely rugose; the pro- thorax in that species is narrower and much less strongl}' and ab- ruptly narrowed toward base. LEPTURA Linn. JL. ^aurotoides n. sp. — Broad, nearly as in Gaurotes, moderately con- vex, dull, the elytra feebly shining ; body, legs and antennje intense black throughout ; pubescence short, dark and inconspicuous. Head moderately finely, extremely densely punctate ; e^'es rather large, the emargination small but deep ; antennae very short, filiform but stout, with the joints compactly joined, one-half as long as the body, without trace of sensitive patches, first joint longer than the next two combined, third twice as long as wide, longer than the fourth but shorter than the fifth, tenth less than twice as long as wide, eleventh a little shorter than the two preceding together, gradually and aculely pointed from near the middle. Prothorax transverse, one-half wider than long, more than three-fourths wider than the head, the sides angulate and slightly prominent at apical third, where the width is slightly less than at base; sides broadly sinuate in basal two-thirds, rapidly convergent from the lateral angles to the apex, which is truncate and one-half as wide as the base; basal angles only very slightly prominent laterally; disk scarcely visibly and widely impressed transversely near the base, just perceptibly flat- tened along the middle, convi x, rather coarsely, extremely densely punctate, the punctures circular and deep. Scutellum a little wider than long, the apex broadly and transversely truncate. Elytra three-fourths longer than wide, at the humeri one-third wider than the prothorax ; sides convergent from the CoJeopterological Notices, V. 593 fivenly rounded humeri to the apex, each elytron evenly and strongly rounded at apex, without trace of truncature, slightly dehiscent at the suture toward tip ; disk strongly, evenly, rather closely but not densely punctate. Legs slender, moderate in length, the first joint of the hind tarsi a little longer than the next two, not at all finely pubescent beneath. Length 9.5 mm. ; width 4.4 mm. Utah (southwestern). » This very distinct species may be placed at present near innta- bilis, which it resembles in general form and in the outline of the prothorax. The truncate scutellum is however a feature which differentiates it widely from that and nearly every other form ; in (iolorosa the scutellum is truncate, but otherwise that species is not at all allied. Gaurotoides is only distantly related to hrevicorniH. PTYCHODES Serv. The two species of this tropical genus which cross the southern border of the United States may be known by the following char- acters : — Pronotum and elytra with three cretate vittre, the sutural vitta extending to about apical fourth or fifth and irregular in outline ; antennae longer, the third joint more than twice as long as the fourth ; anterior legs of the male greatly elongate, the femur about two-thirds as long as the elytra. triliiieatiis Linn. Pronotum without trace of the median white vitta, the sutural vitta of the elytra confined to basal fifth, where it abruptly and completely terminates ; antennje shorter, the third joint rather less tlian twice as long as the fourth ; anterior legs of the male less elongate, the femur not more than one-half as long as the elytra. Head deeply, narrowly furrowed between the antennae, the latter twice as long as the body, slender, the third joint gradually thicker and strongly rugose toward base, eleventh distinctly shorter tVian the third, very slender, the appendage nearly as long as the basal part and j nst visibly arcuate. Prothorax scarcely as long as wide, coarsely, trans- versely plicate. Elytra two and one-half times as long as wide, the lateral vitta equal and continuous from the eyes nearly to the apex ; disk sparsely punctate, strongly so toward base, clothed rather densely with short gray hairs, also with scattered spots of reddish-ochreous pubescence of similar structure. Length 23.0 mm. ; width 5.8 mm. Arizona. abbreTiatus n. sp. The spots of dense ochreous pubescence are much more conspicuous than in trilinealus {=vittatus Fab.) and are less lineate in arrange- ment; the elytral punctures are stronger, and the sutural spines are only one-half as long. A single male example. 594 Coleopterological Notices, V. APPENDIX. As the present paper was passing tbrouo-h the press I received an important sot of western Aleocharini from Mr. Wickbam, of which the two following- species deserve notice at the present time. HIYRMOBIOTA n. gen. Head well inserted, subparallel at the sides, not constricted, the eyes rather small, at distinctly more than their own leuji'th from the base; infralateral carina strong, entire. Antennae thick, the basal joint but sliuhtly longer and thicker than the second, each one-half longer than wide; third slightly shorter than the second, only very feebly obconical, a little longer than wide; fourth slightly wider than long ; four to ten evenly and gradually but rapidly in- creasing in width, obconical and perfoliate, the tenth nearly twice iis M'ide as long ; eleventh short, conoidal, a little longer than widr, not as long as the two preceding. Maxillary palpi slender ; thii d joint longer than the second, almost cylindrical; fourth feebly ol - lique, rather small. Mentum transverse, trapezoidal, with a thin translucent apical extension. Ligula with a short thick paralKI process which is broadly rounded at apex; labial palpi three- jointed, the joints distinct, rapidly decreasing in thickness. Pro^ thorax narrowed at base, the hypomera broad, entire and hori- zontal. Elytra ample. Abdomen rapidly narrowed from base to apex, the first two tergites broadly impre.ssed at base ; third a little longer than the fourth and much shorter than the fifth. Anterior coxse large and elongate, the intermediate narrowly sepa- rated, the mesosternal process long, gradually finely acuminate, ex- tending nearly to their summits, with its apex free and superposed upon the apex of the short triangular metasternal process. Meta- sternum moderate, the side-pieces gradually wider behind, the epi- mera obliquely truncate posteriorly, the obliquely pointed ap»'x extending behind the elytra. Legs slender, moderate in length. Goleopterological Notices, V. 595 clothed with short coarse pubescence; tarsi distinctly 5-5 5-jointed, the posterior only slightly more than one-half as long as the tibiaj, with the first joint a little longer than the second and equal to the fifth ; claws small. This genus is allied closely to Homoeusa, but differs altogether in the form of the prothorax, in the less inflexed hypomera, shorter and stouter process of the ligula, triangular process of the meta- sternum, this being transverse and not entering the intercoxal space in Homoeusa, in its more posteriorly prominent met-epimera, much shorter basal joint of the hind tarsi and longer fourth ventral segment. ]W. crassicornis n. sp. — Rather narrowly fusiform, convex, moderately shining, minutely reticulate, the abdomen more finely and densely so and quite dull ; color rufo-testaceous throughout ; integuments rather coarsely and strongly punctate, the pronotum very densely so, the abdomen much more sparsely ; pubescence short, decumbent and rather inconspicuous, tlie abdomen with longer erect hairs toward apex. Hiad transversely orbicular, convex, the front subimpuuctate and polished, two-tliirds as wide as the prothorax ; antennae very distant at base, somewhat short, but slightly longer than the head and prothorax, very strongly incrassate, finely pubescent and with moderately long erect setae. Prothorax two-thirds wider than long, widest at the middle where the sides are broadly and obtusely angulate, thence con- vergent and straight to base and apex, the latter broadly arcuate and much narrower than the base which is broadly arcuate, becoming straight near the basal angles, the latter slightly obtuse, not rounded and not at all ])romii;ent; apical deflexed, obtusely rounded ; disk strongly convex, feebly, somewhat obliquely impressed toward the sides and broadly, very feebly so along the median line. Elytra equal in width to the base of the prothorax, about as long as the latter ; sides straight and parallel ; humeri concealed ; disk per- ceptibly and transversely convex. Abdomen as long as the anterior parts, at base just visibly narrower than the elytra, at the apex of the filth segment one-half as wide as the latter; sides straight; border moderate; surface transversely convex, becoming subtubulate toward tip. Length 2 3 mm. ; width 0.(55 mm. Iowa (Iowa City). I have not seen any specimens of the ant with which this species occurs. The pubescence of the under surface of the abdomen is long and bristling. A single specimen, probably female. mYRiMECOCHARA Kraatz. As remarked by Mr. Schwarz, it is beyond doubt that this genus — which is also related to Homoeusa — is myrmecophilous and not 596 Coleopterological Notices, V. termitophilous. The following species occurs with a small slender yellow ant, apparently of the genus Solenopsis: — m, crinitR n. sp. — Fusiform, convex, somewhat shining, pale yellowish- testaceous throughout, the pubescence long, suberect, rather dense and very conspicuous, with long sparse setae bristling along the sides of the body ; punctuation fine, somewhat close but not at all conspicuous. Head trans- verse, three- fourths as wide as the prothorax, the eyes rather small and coarsely faceted, obliquely oval, at their own length from the base; infra- lateral carina feeble but distinct ; antennse slender, quite distinctly longer than the head and prothorax, just visibly incrassate, the second joint longer than the third, the latter longer than wide, four to ten subsimilar, rather compactly joined, small, only slightly wider than long, eleventh very long, compressed, gradually pointed, nearly as long as the four preceding combined. Prothorax twice as wide as long, the sides convergent and very feebly arcuate from base to apex, the latter transversely truncate, narrower than tbe base which is strongly and evenly arcuate throughout ; angles slightly rounded, the anterior scarcely at all deflexed ; hypomera strongly inflexed and invisi- ble from the side. Elijlra a little shorter and narrower than the prothorax, strongly transverse ; sides feebly divergent from base to apex, the latter transverse ; humeri completely concealed. Abdomen conical, at base slightly narrower than the elytra ; first three tergites subequal and much shorter than either the fourth, fifth or sixth. Legs slender; tarsi short, evidently 5-5-5-jointed, the first joint of the posterior slightly longer than the second. Length 1.3 mm. ; width 0.4 mm. Colorado (Canon City). This species ditfers from piclipennis in coloration and several other characters, but is apparently closely allied, if not identical, with the form hitherto known from the District of Columbia. Among other species, the material referred to includes in addition a specimen of Oxypoda nigriceps from Iowa City, Iowa, and one of MLcrodonia occipitalis from Walnut, Arizona. In the latter the broad feeble impression near each side of the depressed pronotum is strongly developed, proving that it is a normal character and not produced by shrinkage of the exoskeleton ; analogous lateral im- pressions of the pronotum are well developed in Ecilophila om- nivora of Wasmann, which may be somewhat related to Microdonia. There is also a specimen of Amblopusa brevipes from Victoria, Vancouver, which is pale flavate throughout, doubtless immature ; it is just possible that there may be a minute basal node anchylosed to the very elongate first joint of the labial palpi, but it is not clearl}"" discernible without dissection. Actocharis of Fauvel. is closely allied to Amblopusa and belongs to the same group, the labial palpi being 2-jointed ; but the joints are equal in length, with the Coleopterological Notices, V. 597 first much stouter than the second and clothed with stiff sparse seta; throughout, this being a very remarkable feature. II. Additional Notes and Synonymy. Ftinodes cristatus Csy. (Col. Not. II, p. 323) should be referred to the genus Trichodesma ; it is much stouter than the eastern species. Comonfellus suhglaher Csy. (1. c, p. 389), should be united with obe.ms Lee. Eleodes taisalis Csy. (1. c, p. 399), is without doubt the species intended by Mannerheim as quadricoUis; the female is frequently altogether devoid of the series of coarse punctures, and the original type of tarsalis has a singular bilaterally symmetric deformity of the posterior tarsi. I have before me a large series. The single specimen referred to quadricoUis (1. c. p. 395)' is either a closely allied species with coarser pronotal sculpture, or a simple aberration. Estriatus is a widely distinct species, also represented by a large series. Argoporis nitida Csy. (1. c, p 405), has been erroneously referred by Mr. Champion (Biol. Cent.-Amer., Coleop., lY, i, p. 518), to rvjipcs Chmp. A male of the latter species kindly sent me by the author, shows that rvfipes is a stouter and much duller species, with smaller punctures of the elytral series, and differs greatly in the structure of the anterior legs in the male. In the male of rvfipes the anterior femora are stouter, with a much less developed internal subbasal dentiform lamina, and the corresponding tibiae have onl}' five or six widely spaced granuliform serrules internally, while in nitida the internal cariniform elevation of the femur is very pro- nounced, and the tibiae are finely and closely serrulate within through- out the length ; the last joint of the anterior tarsi in nitida is rela- tively longer, nearly equalling the three preceding combined. The reference made (Col. Not. Ill, p. 21, footnote), to a single mandibular tooth in Ergates neomexicanvs is not exactly correct, as I find by prying the mandibles further apart ; the basal tooth is hewever more feeble than in i^jncKlatus. The proper status of neomexica,nus is probably tliat of a well-marked variety of spiculatiis. All the specimens which I have seen have large pallid blotches on the elytra; whatever may be the cause of these blotches, they are completely wanting in my two specimens of s2jirulafus. 598 Coltopterological Notices, V. Epitragodes (1. c, p. 54), is closely allied to Schoenicus but differs in the stouter body, less prominent eyes, securiform fourth palpal joint and prominent prosternal process with vertical posterior wall; in Schoenicus the last palpal joint is more slender and triangular, rounded at apex with the inner side but slightly shorter than the outer, and the prosternal process is longitudinally convex and gradually declivous behind. Hymenorus obesvs Csy. (1. c, p. 93), is not distinct from pilosvs Melsh. In difficilis (1. c, p. 94), the measurements are somewhat in error, the true dimensions of the type being about 6.0 by 2.5 mra. ; the third antennal joint, also, is more than two-thirds as long as the fourth. Of ^lycetochara viegalops I have recently received a fine e.\au)ple taken in New York. The species of Andrimus defined under that genus, are distinct in my opinion ; only two of them are known to the authors of certain recent hints to the contrary, and even they appear to have been misunderstood. Thysanocnemis horridula Csy. (Col. Not. IV, p. 426), cannot be maintained as distinct from fro xrni Lee; the locality label on the type of horridula is probably erroneous. The name Otidocephalus myrmecodes Chev., was assumed by me (1. c, p. 435), under a wrong impression. The reference given by Dr. Horn, "myrmecodes \\ Chev.," conveys the idea that Chevrolat described independently a species under the preoccupied name myr- mecodes, and, under such circumstances, this name would of course stand when the original myrmecodes fell into synonymy. The truth, however, as I subsequently discovered — it did not occur to me to investigate further at the time, — is that Chevrolat described what he considered to be myrmecodes Say, and the reference should have been "myrmecodes Chev. nee Say," which has quite a differ- ent meaning. The true name of the species is therefore: — O. Clievrolati Horn — Pioc. Am. Phil. Soc, XIII, p. 450; mjjrmecodes Chev. iiec Say : Ann. Ent. Soc. Fr., 1832, p. 445 ; Casey : Ann. N. Y. Acad. Sen., VI, p. 435. Specimens of TyJoderma contusa Csy. (1. c, p. 452), recently re- ceived, show that the humeri are generally nearly as widely exposed as in foveolala, and that the integuments beneath the pubescent patches of the elytra are rufescent ; there are also a few hairs near the scutellum. The species would consequently be plainly allied to variegata, if it were not for the very coarse deep foveae of the pro- notum and elvtra, which suggest an affinity \\'\ih foveolata. Coleopterological Notices, V. 599 In CentrivKS acuminatus and glohifer (1. c, pp. 404, 591), the t