June 1900.] Casey : On North American Coleoptera. 89 



and width to the third ; prothorax shorter, scarcely visibly less than twice as wide 

 as long, the sides parallel and evenly, distinctly arcuate ; elytra two-fifths longer 

 than wide, not wider than the prothorax and less obtusely rounded at apex. 

 Length 3.2-4.25 mm. ; width 1. 2-1.7 mm. Utah (southwestern) — Mr. Weidt. 



pallidivestis, sp. nov. 

 3 — Body narrowly oblong-oval, pale rufo- testaceous throughout, the antennre and legs 

 concolorous, polished, the elytra slightly alutaceous ; antenna; moderate in the 

 female ; prothorax less than twice as wide as long, parallel and .straight at the 

 sides, finely but deeply, not very densely punctate ; elytra subangularly dilated at 

 two-fifths and wider than the prothorax, the base equal to that of the latter, the 

 apex obtusely rounded ; punctures very fine, feeble and rather sparse. Length 

 ^.^ mm.; width 1. 35 mm. Wisconsin (Bayfield) —JNIr. Wickham 



convexulus Let:. 



The stout mandibles are bifid at tip, and the antennae are inserted 



within very small foveas on the vertical sides at a great distance from 



the eyes ; they differ very obviously in the sexes, as indicated above. 



Si/fi/ralis of Miiklin, I have not seen. 



Crosimus, gen. nov. 

 In the general structure of the body this genus is allied to Salebius, 

 and especially in possessing three lateral projections at each side of 

 the prothorax, and in the same positions, but here the nodes are not 

 thickened and take the form of broadly rounded and rather feeble un- 

 dulations of the edge, the salients being spiculato-serrulate. It differs 

 greatly from Salebius or Cryptophagus in the short stout, very convex 

 and oval form of the body, long hirsute sparse vestiture, in having the 

 elytral punctures arranged in uneven unimpressed double series, in 

 having a fine raised line near each side of the pronotum extending 

 from base to apex, and in the more longitudinally convex prosternum, 

 the process being elevated far above the coxfe from an under view, the 

 process more strongly margined at the sides ; the antenna, oral organs 

 and legs are throughout as in Cryptophagiis. The basal fovea of the 

 pronotum are connected by a very deep channel along the basal mar- 

 gin, which is never interrupted at the middle by a carina, and the 

 callous discal spots of Cryptophagiis appear to be obsolete. The tarsi 

 are very slender and as long as in Salebius. The eyes are unusually 

 small, absolutely basal and extremely convex, not very coarsely 

 faceted. The two species before me may be described as follows : — 



Body more narrowly oval, polished, black, the legs and antenna testaceous, the elytra 

 bright rufous, black at the apex, at the middle of the flanks and transversely be- 

 hind the base near the suture ; pube.scence moderately long and sparse ; prothorax 



