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 



