2. H. longus, n. sp. Slender, cylindrical, black, nearly glabrous. Head densely punctured, beak finely carinate, front with a transverse impression. Prothorax longer than wide, base and hind angles rounded, sides slightly rounded, converging gradually to the tip, which is broadly rounded; punctures deep and strong, larger at the base than at the tip and sides, where they are also more dense; no smooth dorsal line is visible. Elytra less shining than the prothorax, with striæ composed of moderate sized punctures; interspaces nearly flat, wider than the striæ, densely, finely punctured. Club of antennæ brown, first joint composing about one-half of the mass. Length 4.5 mm.; .175 inch. Colorado, Prof. F. H. Snow; one specimen. This species resembles closely H. macer, but can be easily recognized by the different form of the prothorax. The following synonyms will complete the bibliography I have already given in my synopsis. 4. H. porculus Er. Wiegm. Archiv. 1836, i, 49; H. carbonarius Fitch, Noxious Ins. New York, 4th report, No. 249; H. granosus Chapuis, Mem. Soc. Roy. Sc. Liége, 1869, 73; H. scabripennis Zimm., Tr. Am. Ent. Soc. 1868, 149; ? H. salebrosus Eichhoff, Berl. Ent. Zeitschr. 1868, 146. 5. H. cavernosus Zimm., 1. c. 149; ? H. scobinosus Eichhoff, Berl. Ent. Zeitschr. 1868, 146; Chapuis, 1. c. 73. Eichhoff gives Carolina as the locality; Chapuis mentions Norfolk Sound, which, being on the Pacific coast, makes the reference doubtful. Perhaps the specimen came from Norfolk, Virginia, instead of Norfolk Sound. Should they prove to be the same, the name proposed by Eichhoff has priority by a few weeks. 9. H. exilis Chapuis, 1. c. 20. Florida, one specimen, Messrs. Hubbard and Schwarz. Nearly related to H. tenuis, but the prothorax is more coarsely punctured, and the interspaces of the elytra are not granulate, but rugosely punctured, and less opaque. Length 2.5 mm.: .10 inch. HYLURGOPS n. g. I have separated as a distinct genus the species referred to Erichson's second division, having the third tarsal joint broader and bilobed, and the mesosternum protuberant. They are quite different in form from true Hylastes, and resemble Dendroctonus, the prothorax being more narrowed forwards, and more finely and densely punctured. The basal margin of the elytra is so acutely defined in H. granulatus and pinifex that I should place them near Hylurgus, but for the scutellum, which is not depressed; and for the deeper antennal grooves, which remove them from the group of Hylurgi. The front tibiæ are less coarsely serrate than in Hylastes. The species may be thus distinguished: Prosternal ridges acute; front transversely impressed. 2. Prosternal ridges indistinct; beak carinate, front not impressed; color brown, elytra variegated with spots of pale scales, basal margin acute, subserrate... 2. Beak carinate; basal margin of elytra subacute, subserrate. Beak not carinate; basal margin of elytra subacute, subserrate..... Beak not carinate; basal margin of elytra acute, serrate; alternate interspaces more elevated behind...... 1. granulatus. 2. pinifex. 3. rugipennis. 4. subcostulatus. 1. H. granulatus Lec., Tr. Am. Ent. Soc. 1868, 175 (Hylastes). Oregon and California. The variegated spots of the elytra are formed of small pale scales, and were not apparent in the two specimens upon which my description was based. Length 5 mm.; .20 inch. 2. H. pinifex Fitch, Noxious Ins. New York, 4th report, 43, No. 248; (Hylastes); Lec., Tr. Am. Ent. Soc. 1868, 176. Lake Superior, Canada, Ohio. Length 5 mm.; .20 inch. 3. H. rugipennis Mann., Bull. Mosc. 1843, 297 (Hylurgus); ibid, 1853, 238 (Hylastes); Lec., loc. cit. 176; Chapuis, 1. c. 76. Alaska, Oregon and California. Length 4-4.5 mm.; .16-.18 inch. 4. H. subcostulatus Mann., Bull. Mosc. 1853, 239. Oregon and Sierra Nevada; described by Mannerheim from Alaska. Length 4 mm.; .16 inch. Hylastes rufipes Eichhoff, Berl. Ent. Zeitschr. 1868, 147; Chapuis, 1. c. 79, probably belongs to this genus, but is unknown to me. Hylastes cristatus Mann., Bull. Mosc. 1853, 239, from Alaska, may also belong here, but is unknown to me. SCIERUS n. g. I have separated under this generic name a species which agrees in general form with Hylurgops, but differs from it and Hylastes by the front coxa being widely separated by the prosternum. The form of the third joint of the tarsi is intermediate, it being not as deeply bilobed as in Hylurgops, but broader than in Hylastes. It agrees with both in the antennæ, which have the funicle 7-jointed, and the club ovate-pointed, with the first joint smooth, shining, and nearly as long as the others united. The tibia are dilated and broadly serrate as in Hylastes; the terminal mucro is short. The first and second ventral segments are equal, and the third and fourth are shorter; the fifth is as long as the second. The other characters are those of the tribe, and it is not necessary to repeat them. 1. S. annectens, n. sp. Oblong-cylindrical, dark brown, opaque, thinly clothed with very short depressed yellow hairs. Beak flat, punctured and hairy, about twice LeConte.] as wide as long, not impressed or carinate; head convex, punctures becom Lawrence, W. Couper; British Colum- Family X. ANTHRIBIDÆ. Mentum large, deeply emarginate in front, closely connate, (except in the group Hormisci,) with the gular peduncle, which is broad and short; buccal fissures consequently narrow, only partially exposing the base of the maxillæ; ligula large, corneous, narrowly emarginate at tip; palpi 3 jointed, inserted at the sides of the lower face of the ligula, distant, slender, cylindrical, longer than in other Rhynchophora and flexible, as in normal Coleoptera and in Rhinomacerida; last joint elongated, narrower at the tip. Maxillæ visible in the narrow buccal fissures, with two narrow lobes, usually rounded and ciliate at tip; palpi slender, 4 jointed, with the last joint longer and narrower at the tip. Mandibles flattened on the upper surface, curved, pointed or emarginate at tip. Antennæ inserted usually under the sides of the front, rarely upon the front. They are 11-jointed, slender and not geniculate; the first joint is stouter, but scarcely longer than the second; joints 3-8 slender, pubescent; 9-11 broader, more or less compressed, finely pubescent and sensitive. The antennæ of the are sometimes much longer than the body. The outer joints form a compact oval club in Hormiscus. Head prominent, not deflexed; beak broad, flat, sometimes so short as to be indistinct; never cylindrical or slender, and never separated from the front by a transverse impression. Eyes moderate in size, not very finely granulated, rounded, sometimes slightly emarginate in front. Labrum distinct, quadrate, fringed with hairs. Gular suture completely obliterated. Prothorax of varied form, usually trapezoidal and truncate in front; rarely somewhat rounded over the head (Choragus); base truncate, with a transverse, elevated line which is either antebasal (Tropiderini) or entirely basal; this line is abruptly bent forwards at the sides, and forms a more or less abbreviated side margin. The prosternal sutures are entirely obliterated, as is also the short suture behind the posterior point of the prosternum, so that the under surface consists of but one piece. The coxal cavities are rounded, and narrowly separated. Mesosternum flat, triangular behind, with the point rounded, and separating the middle coxæ; cavities rounded, epimera transverse, oblique, not attaining the coxæ. Metasternum long, side pieces narrow, or moderate in width, wider in front, with the outer angle prolonged forwards; in many genera there is a transverse impression in front, simulating a suture. Elytra conjointly rounded behind, and forming a small sutural fold, which fits into a deep emargination of the pygidium; fold of the inner surface acute, not prolonged much behind the middle. Epipleuræ distinct. The striæ are ten in number, with a short scutellar one as in Carabida; this scutellar stria is usually about one-fourth the length of the elytra, and does not connect itself with the sutural stria. Abdomen with five free, and sometimes nearly equal ventral segments; sutures straight; intercoxal process triangular, acute or rounded in front; dorsal segment membranous, except the pygidium, which is corneous, declivous and exposed; no anal segment in the ♂. Anterior coxæ narrowly separated, globose; middle coxæ moderately separated, rounded; hind coxæ transverse, not prominent, never very widely separated. Legs slender, front pair sometimes elongated in ; tibiæ truncate at tip, without spurs or hooks. Tarsi brush-like beneath, 4-jointed; second joint triangular, emarginate; third joint bilobed, sometimes large, sometimes small; fourth joint slender with divergent claws, which are either simple or toothed. The genera of this tribe are sufficiently distinguished by the position and form of the prothoracic ridge, which is remote from the base, more or less sinuous, and flexed obliquely at the sides. The antennæ are situated under the lateral edge of the beak, which is sometimes flattened and expanded so that the antennal cavities are partially covered. Three groups occur in our fauna: Eyes entire, suture of mentum obliterated..... emarginate; suture of mentum distinct. 2. Hormisei. 2. Sides of beak not dilated; antennæ very long.. Ischnoceri. Tropideres. Beak longer than the head, dilated at tip; antennal cavities large, lateral, limited above by a small, elevated line, which descends to the inferior margin of the eyes. Eyes longitudinal, elliptical, rather coarsely granulated. Antennæ very slender, longer than the body in ; two-thirds as long in ; first joint very short; second twice as long as first, and more than onehalf as long as third; 9–11 broader, forming a compressed, loose, oval club. Tarsi with the first joint long; second triangular, emarginate, with prolonged angles; third as wide as the second, bilobed; claws armed with a long, acute tooth at the middle. ISCHNOCERUS Schönh. 1. I. infuscatus Fahraeus, Sch. Curc. v, 192; Meconemus tuberculatus Imhoff and Labram, Gen. Curc. 1, 40. Mexico, extending into the Southern States as far as South Carolina. In the Mexican specimens the pubescence is somewhat paler and more dense; it is Ischnocerus macrocerus of Dejean's Catalogue. This is a narrow species, with the base of the prothorax truncate; there is a trace of a second transverse raised line between the base and the antebasal ridge; the latter is situated about one-fifth from the base, slightly sinuate, and forming an obtuse angle at the middle; flexed obliquely forwards on the side, where a distinct lateral angle is formed behind the middle. The pubescence is yellowish brown, mixed with pale gray, and does not exhibit any distinct pattern. Length 6.8-10 mm.; .27-.40 inch. Group. II. Tropideres. The sides of the beak in the insects of this group are dilated over the antennal cavities, which are therefore not visible from above. The form of the antebasal ridge differs in each genus, and in conjunction with the antennal club and tarsal claws affords easy characters for distinguishing the genera. The eyes are entire, either rounded or oblique. Antennal club narrow, not compressed..... "oval, compressed...... 2. Prothoracic ridge strongly angulated and touching 3. Eyes oblique, slightly oval, beak short.... GONOTROPIS n. g. 2. 3. GONOTROPIS. EURYMYCTER. TROPIDERES. ALLANDRUS. Body rather robust and convex. Beak longer than the head, gradually narrowed to the middle, then widened to the tip, which is truncate with PROC. AMER. PHILOS. Soc. xv. 96. 2x |