Royal Physical Society. 151 



thorax. Scutellum more elongate than in sericeus. The length 

 of the elytra is 2| times that of the thorax, while in sericeus 

 it is not so much as twice that length. The elytra also are not 

 so broadly truncate at the apex. 



Described from a specimen in M. Chevrolat's collection re- 

 ceived under this name from M. Motschoulsky. Locality not 

 mentioned ; supposed to be from Mongolia. 



57. C. californicus, Leconte. 



Catops californicus, Lee. Synopsis of Silphales of N. America, Proc. Acad. 

 Philadelphia, vol. vi. 1853, p. 281. 



Oblongus, subovalis, piceus, sericeus, subtilissime Fig- 50. 

 punctulatus et transversim strigosus ; antennarum 

 basi, pedibus, elytrisque pallidioribus, his stria sutu- 

 rali profunda; thorace antrorsum valde angustato, 

 angulis posticis paulo productis subacutis. 



Long. 1 lin. 



The antennae are slightly clavate and as long as the head and 

 thorax ; the thorax is strongly narrowed in front, truncate at base, 

 and slightly sinuate near the posterior angles, which are subacute ; 

 the sides are broadly rounded ; the disk is sometimes blackish, 

 and the sides dark rufous. The punctures of the upper surface 

 in this species are very indistinct, and the transverse strise very 

 fine ; the pubescence is sericeous, but not dense ; the anterior 

 tarsi of the male are strongly dilated, the intermediate pair 

 simple, the posterior pair longer than the tibiae. 



Dr. Leconte mentions that it is abundant at San Jose and San 

 Diego, California. He also observes that one female specimen 

 which he had from San Diego appeared more elongated than the 

 others and much more narrowed posteriorly. He could not, 

 however, find any other difference. 



58. C. consobrinus, Leconte. 



Catops consobrinus, Lee. Syn. Silph. N. Amer. Proc. Acad. Philad. vi. 1853, 

 p. 281. 



" Oblongo-ovalis, subelongatus, ater, subsericeus, vix Fig. 51. 

 punctulatus, subtiliter transversim strigosus ; antennis 

 basi rufo-piceis ; elytris stria suturali profunda ; tho- 

 race antrorsum modice angustato, angulis posticis 

 leviter productis. 



" Long. 1 lin. 



" Georgia. This species resembles the two preceding, but is a 

 little more elongated and more oval ; it is entirely black, except- 



