406 ANTHRIBID^. 



[LeConte. 



broadly rounded, sinuate near the hind angles, which are acute ; disc 

 strongly punctured, but the punctures are concealed by the dense pubes- 

 cence. Elytra not wider than the base of the prothorax, and about twice 

 as long as it ; striae narrow, rather finely punctured. Legs and antennae 

 yellowish-brown, club darker. Length 3.5 mm. ; .14 inch. 



Colorado, six specimens ; Prof. F. H. Snow. The body is elongate as in 

 B- variegatus ; the pubescence is nearly uniform, but tliere are, sometimes, 

 three paler gray vittse on the prothorax, and a broad one occupying the 5th 

 and 6th interspaces of the elytra. The side margin produced by the flex- 

 ure of the basal ridge extends nearly one-half of the length of the pro- 

 thorax. 



3. B. limbatus Say, ibid, v, 250 {Anthribus) ; ed. Lee, ii, 314. 

 Atlantic States, varies in size from 2.2-3.1 mm. ; .09-. 12 inch. 



4. B. plumbeus, n. sp. 



Oblong, cylindrical, black, densely clothed with cinerous pubescence, not 

 mottled; stri* of elytra fine, punctured; antennie and legs testaceous, club 

 and thighs darker. Length 3.2 mm., .13 inch. 



Middle States. Of the same form as B. limbatus, but a little narrower; 

 the pubescence is finer, of a uniform gray color. The posterior ridge ex- 

 tends only one-third the length of the prothorax at the sides, while in B. 

 limbatus it goes fully as far as the middle. 



5. B. vestitus, n. sp. 



Oblong-cylindrical, black, densely clothed with coarser brownish-yellow 

 pubescence, scarcely mottled striiB of elytra punctured, interspaces fiat; an- 

 tennae and legs testaceous. Length 2 mm. ; .08 inch. 



Louisiana; Mr. Ulke. Smaller and narrower than B. limbatus, densely 

 covered in the same manner with coarse, brownish -yellow pubescence; the 

 hind angles of the prothorax are acute; but the transverse ridge scarcely ex- 

 tends along the sides in front of the base. 



6. B. tomentosus Say, Journ. Ac. Nat. Sc. Phila. v. 251 (Anfhnbus) ; ed. 

 Lee, ii, 315. Brachytarsus brevis Fahraeus, Sch. Cure, v, 168. 



Middle and Western States; on Ambrosia (C. V. Riley). The ridge ex- 

 tends from the hind angles about one-third the length cf the prothorax. 



7. B. variegatus Say, Journ. Ac. Nat. Sc. Phila. v, 251 {AjithribwC); 

 ed. Lcc, ii, 315; Brachytarstis sticticus Gyll., Sch. Cure, i, 172. 



Atlantic States; Say notes its occurrence in the smut of wheat. A species 

 of rather elongate form, and easily known by the basal and postmedial 

 fuscous spots near the suture; varieties however occur in which these spots 

 are obsolete, and the specimens are then to be distinguished from A.limba- 

 ttis by the narrower form, and more elongate prothorax. Such specimens 

 probably represent B. obsoletus Fahraeus, Sch. Cure, v, 167. The ridge ex- 

 tends from the base along the sides for about one half the length. 

 ANTHRIBULUS n. g. 



The small species upon which I have founded this genus is of more 

 elongate form than Brachytarsus, but agrees with it in the trapezoidal 



