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. 



