AMERICAN COLEOPTERA. 41 



C. Crotchii, n. sp.— Head black, sparsely punctured and shining, mouth 

 and palpi testaceous. Antennae % moderately strongly pectinate from the 

 third joint, black. Thorax rufous sparsely punctured. Elytra (variable in 

 color?) yellowish testaceous, suture, margin and tip narrowly bordered with 

 black, sparsely and rather coarsely punctured and sparsely flavo-pubescent. 

 Body beneath black, abdomen piceo-testaceous (immature?). Legs piceous, 

 femora beneath testaceous. Length .20 inch; 5 mm. 



Male.— Elytra at tip black, smooth and with broad shallow impression. 



Female. — Unknown. 



The elytra in this species may be perhaps entirely black in maturity. 

 It differs from every known Coiyh?/ra by the pectinate antennae 

 which resemble those of a Malachius. 



Collected by Mr. G. R. Crotch, at Chrystal Springs, California. 

 C. moiltlcola, n. sp.— Head black, shining, sparsely punctured. Anten- 

 nas (2 basal joints) piceous. Thorax transversely oval, red, sparsely punctured. 

 Elytra (variable?) pale rufo-testaceous, moderately densely punctured. Body 

 beneath black, legs pale rufo-testaceous, tarsi piceous. Length .26 inch • 

 6.5 mm. 



ikfa/e.— Elytra at tip either pale rufous or black, more convex, smoother, and 

 with a distinct but shallow impression. 



Female. — Unknown. 



Resembles at first sight some of the varieties of pumtulata, from 

 which the male characters and pale legs at once distinguish it; differs 

 also from elcgans by the entirely black abdomen. The elytra may be- 

 come entirely black except at tip in male. 



Collected by Mr. Crotch, at Calaveras, California. 

 C. pnnctitSata, Lee. Ann. Lye. v. 151. 



California. 



C. Tancbris, Horn, Trans. Am. Ent. Soc. 1871, p. 28C. 



California. I have suspected that these species might be varieties 

 of one. Varieties of funehris with pale elytra have been brought by 

 Mr. Crotch and also a specimen apparently of punctulata, with a large 

 discal black spot on the thornx. 



An examination of the penis-sheath shows, however, that while in 

 the former the processes at the tip are parallel and contiguous, those 

 of*the latter are somewhat longer and divergent. This organ appears 

 to vary somewhat between all the species. 

 C vittata, Horn, loc. cit. p. 279. 



Varieties of this species may occur with the elytra entirely testa- 

 ceous and the suture alone broadly black. The legs may be also 

 entirely pale, and the antennae rufo-piceous. 



Occurs at Chrystal Springs, California. 



TKAN8. AMER. ENT. SOC. (6) MARCH, 1874. 



