182 GEO. H. HORN, M. D. 



a distinct species. In this instance my series is very large. In fact 

 I have drawn the descriptions of all the California species from 

 observation of at least two pairs of specimens, and from this of 

 fifteen pairs. 



C niimns Horn, Trans. Am. Ent. Soc. 1874, p. 20. — Moderately elongate, 

 black, shining. Head moderately elongate, subopaque, gense feebly notched. 

 Thorax cordiform as wide as long, sides in front moderately arcuate, posteriorly 

 slightly sinuate, hind angles rectangular, margin very narrow, disc flat opaque, 

 impressions feeble. Elytra oval moderately ventricose, surface finely striate, 

 striae not impressed but with large moderately closely placed punctures, inter- 

 vals irregular at the sides, inflexed portion obsoletely punctate. Body beneath 

 smooth, shining. Length .58 — .64 inch; 14.5 — 16 mm. 



This species is a close imitation of pnnctatus, and differs from that 

 species only in its sexual characters and by the elytra being rather 

 less ventricose. 



The only specimens I have seen were those collected by Mr, G. R. 

 Crotch at San Bernardino, California. 



C. 



In this series are contained those species in which the anterior 

 tarsi of the males have but two joints papillose beneath, the third 

 and fourth being entirely glabrous at middle. The color of the 

 species is black, subopaque in two species and moderately shining 

 in the third. 



They may be separated in the following manner : 

 Thorax posteriorly slightly sinuate, not constricted, surface subopaque, elytra 

 ovate. 

 Elytra finely striate, striae with rather coarse deep punctures. 



ptinctatns. 



Elytra without striae but with rows of rather fine punctures subtilis. 



Thorax posteriorly constricted, sides posteriorly deeply sinuate, surface moder- 

 ately shining, elytra longer oval. 

 Elytra finely striate, strise finely punctured, the alternate intervals behind 

 the middle with a row of punctures striatopuuctatus. 



C panctatus Lee, Proc. Acad. 1869, p. 69; Mots. Kafer Russ. p. 90. — 

 Moderately robust, black, feebly shining. Head moderately elongate, sub- 

 opaque, geuae incised. Thorax cordate, a little longer than wide, sides in front 

 moderately arcuate, posteriorly feebly sinuate, hind angles subrectangular, disc 

 subopaque, feebly convex, basal impression deeper than the others, margin 

 very narrow. Elytra oval, ventricose, with very fine scarcely impressed striae 

 which have deep and rather large punctures moderately closely placed, lateral 

 intervals confused, inflexed portion of elytra very obsoletely punctate. Body 

 beneath black, shining. Length .52 — .70 inch ; 13 — 18 mm. 



This species and mimus of the preceding group resemble each 

 other 80 closely that it is hardly possible to distinguish them. In 



