166 Coleopterological Notices, III. 



transverse and broadly bisinuate ; disk minutely, extremely densely punctate, 

 the punctures not in mutual contact. Elytra but little less than four times as 

 long as the prothorax, and, in the middle, about one-third wider ; sides arcuate 

 and continuous with those of the prothorax ; disk finely but distinctly stri- 

 ate, the strife rather abruptly impressed, finely punctate, the intervals fiat, 

 minutely, very densely punctate. Abdomen shining, finely, more sparsely 

 punctate. Legs moderate in length, very slender, the basal joint of the hind 

 tarsi three-fourths as long as the remainder. Length 8.5-10.0 mm. ; width 

 3.8-4.3 mm. 



California (Coast mountains). 



The specimens before me appear to be all females. It is distin- 

 guishable from iheveneti by its larger size, broader form, shorter 

 antennae, shorter, broader prothorax and black legs. 



C. marginata Ziegl. — Proc. Ac. Phil., II, 1844, p. 46. — Elongate-oval, 

 rather feebly convex, piceous-black, the entire margin of the pronotum 

 broadly, and of each elytron except the base, narrowly, presternum and 

 abdomen pale rufo-ferruginous ; antennae black ; legs dark rufo-piceous ; 

 lustre rather dull ; pubescence unusually long and distinct, pale ochreous. 

 Head rather large, feebly convex, extremely minutely, rather densely punc- 

 tate, the punctures separated ; eyes moderate, separated by three-fourths more 

 than their own width ; antennae long and slender, a little more than one-half 

 as long as the body, the joints distinctly serrate internally, more than three 

 times as long as wide, the third twice as long as the second and three-fifths 

 as long as the fourth. Prothorax one-half wider than long, the apex truncate, 

 one-half as wide as the base, the latter transverse, broadly, rather feebly bi- 

 sinuate ; sides evenly convergent and broadly arcuate from base to apex ; disk 

 rather strongly depressed above, feebly, narrowly canaliculate throughout 

 along the middle, minutely, extremely densely punctate, the interspaces 

 shining. Elytra fully five times as long as the prothorax, and, in the middle, 

 fully one-half wider, gradually ogival in rather less than apical third ; sides 

 thence parallel and very nearly straight to the humeri, which are abruptly, 

 strongly rounded to the base of the prothorax and rather broadly exposed ; 

 disk very finely ; feebly striate, the stria? extremely finely, inconspicuously 

 punctate, the punctures narrow and sublinear ; intervals nearly flat, minutely, 

 very densely punctate. Abdomen rather more shining, minutely, rather closely 

 punctate. Legs slender, normal. Length 12.5 mm. ; width 4.5 mm. 



Pennsylvania. Cab. LeConte. 



This species, which is represented as far as I know by the unique 

 type, is exceedingly distinct and widely isolated from any of our 

 other species by its finely canaliculate prothorax and long elytra, 

 with rounded exposed humeri. It may have to be generically sepa- 

 rated, but in the condition of knowledge of the exotic forms, this 

 cannot now be appropriately done. The type appears to be a female. 



