CoJeopterological Notices. 375 



Although allied to abdominalis this species is very much smaller, 

 and is exclusively northern in habitat. In both, the elytra are 

 strongly rugulose toward apex, but this uneven effect is produced 

 by actual inequality of the surface, the punctures being smaller 

 and scattered over the surface of the wrinkles in abdominal/'*, 

 while in ovalis it is the result of actual coalescence of the larger, 

 deeper and more broadly impressed punctures. The elytral punc- 

 tures are distinctly smaller in the Montana specimens. 



C. iliaequalis n..sp. — Rather elongate, strongly convex, with the sides 

 parallel and nearly straight, the apex of the elytra very unusually prolonged 

 and acutely rounded ; surface strongly shining. Head distinctly less than 

 one-half as wide as the base of the prothorax, rather sparsely and finely 

 punctate, more coarsely so anteriorly ; antennae piceous-black almost through- 

 out, rather robust but scarcely at all incrassate toward tip. Prothorax about 

 three-fourths wider than long ; sides almost parallel and feebly arcuate in 

 basal two-thirds, rounded anteriorly ; base truncate, very feebly sinuate later- 

 ally, the angles slightly produced and narrowly rounded ; disk very minutely 

 and extremely sparsely punctate throughout, the punctures but slightly more 

 evident toward the sides which are very narrowly but strongly refiexed. 

 Elytra distinctly more than twice as long as the prothorax, sparsely but very 

 deeply and coarsely punctate, the punctures very widely impressed, producing 

 a very unevenly rugulose appearance toward apex where they are imperfectly 

 coalescent in twos or threes. Abdomen polished, excessively minutely feebly 

 and sparsely punctate. Length 13.5 mm. ; width C.2 mm. 



California (exact locality unknown). 



Although represented by a single specimen, there can be no 

 reasonable doubt that this species is comparatively isolated. Iu 

 general habitus it resembles eschscholtzi, but can at once be dis- 

 tinguished by its very sparse punctuation and radically different 

 elytral setae, as well as its polished and exceediugly minutely punc- 

 tate pronotum. 



C. robust a Horn.— Trans. Am. Phil. Soc, XIV, p. 296.— Robust, strongly 

 convex, about t^ice as long as wide ; pronotum finely alutaceous ; elytra more 

 strongly shining and more piceous-brown in color. Head rather small, less 

 than one-half as wide as the prothorax, finely punctate ; antennae very robust, 

 slightly incrassate toward apex ; eleventh joint as usual much narrower. 

 Prothorax about two-thirds wider than long ; the sides parallel and almost 

 straight in basal two-thirds, strongly rounded and convergent anteriorly ; 

 base transverse, rather strongly sinuate laterally, the angles being very dis- 

 tinctly produced posteriorly and scarcely at all rounded ; disk sparsely and 

 very minutely punctate throughout ; side margins narrowly but strongly re- 

 flexed. Elytra scarcely more than twice as long as the prothorax, very decliv- 



