532 TRANSACTIONS OP THE 



ferruginous; thorax brassy-green, with rather dense, very short 

 hair, polished ; dorsal and basal impressed lines distinct; pos- 

 terior angles not excurved, but obtusely angulated, almost 

 rounded ; elytra bluish yiolaceous, with punctured strice ; inter- 

 stitial spaces pubescent, depressed, and minutely granulated, 

 beneath blackish ; feet rufo-ferruginous. 



Length half an inch. 



Much like C ncmoralh Say, but the antennae of that species 

 are entirely rufoferruginous, its posterior thoracic angles are 

 slightly excurved, &c. 



6. C. soccATUS. — Blackish ; feet ferruginous with blackish 

 tarsi and joints. 



Inhabits Mexico. 



Body blackish, with a slight violaceous tinge; minutely pubes- 

 cent, punctured; head blued-black, glabrous, two slight indenta- 

 tions between the antennae, and an obsolete transverse one be- 

 tween the eyes ; antennae pubescent, blackish, three basal joints 

 dark piceous ; palpi piceous ; thorax short ; lateral margin regu- 

 larly arquated ; posterior angles rounded ; impressed lines dilated ; 

 elytra with punctured striae ; interstitial spaces minutely granu- 

 lated, depressed ; beneath blackish ; feet rufo-ferruginous, joints 

 and tarsi blackish-piceous. 



Length nearly half an inch. 



Resembles vigilans Nob., but the thorax is shorter and the 

 lateral curvature is more regular, that of the preceding species 

 being almost rectilinear from near the middle to the posterior 

 angles ; the colors also are different in their arrangement. [420] 



Of this genus I have sixteen North American described , 

 species, ' 



OODES Bonel. 



0.? PARALLELUS. — Black; thoracic angles rufous; feet pi- 

 ceous. 



Inhabits Louisiana. 



Body black, very slightly tinged with piceous ; head with but 

 a slightly impressed point between the antennae ; antennae red- 

 dish brown, three basal joints honey yellow ; palpi honey yellow; 

 mandibles piceous ; thorax narrowed before, smooth, dorsal line ; 



[Vol. IV. 



