484 TRANSACTIONS OF THE 



Carahus sericeus, alatus, ater, capite, thorace, et elytris viridi-nitenti- 

 bus, antennis pedibusque rufis. Forst. Nov. Sp. Ins. Cent. Oliv. Encyc. 

 Meth. 



Carahus Fosteri Turt. Linn, 2, p. 464. 



Carahus sericeus Melsh. Catal. 



Body green, beneath black, with very short namerous hairs ; 

 head polished, punctured ; antennae and palpi pale rufous, the 

 former paler at base ; labrum rufous ; mandibles ferruginous at 

 base ; thorax distinctly transverse, densely punctured, polished, 

 dilated in the middle, posterior lateral edge rectilinear or slightly 

 excurved, dorsal and basal lines very distinct, base rather nar- 

 rower than the elytra ; elytra not wider behind the middle, with 

 numerous minute punctures, striate ; striae acute, minutely punc- 

 tured, interstitial lines flat ; feet rufous ; pectus and postpectus 

 punctured ; abdomen with minute punctures. 



Yar. o. Elytra purplish. 



Very closely resembles the next, but differs in the less elon- 

 gated form of the thorax. Common in the Middle States, and 

 was brought from Missouri by Mr. Nuttall. [ 62 ] 



2. C. ^STivus. — Green-cupreous; elytra purple-black; an- 

 tennae and feet rufous; head punctured. 



Length seven-tenths of an inch. 



Carahus amethystinus Melsh. Catal. 



Body greenish-cupreous, beneath black, with very short nu- 

 merous hairs ; head polished, punctured ; antennae and palpi ru- 

 fous, shaded towards the tips ; labrum ferruginous ; mandibles 

 blackish ; thorax as long or rather longer than broad, dilated in 

 the middle, posterior lateral edge rectilinear, or slightly excurved, 

 densely punctured, polished, dorsal basal lines very distinct, base 

 narrower than the elytra ; elytra dark purple, opake, perceptibly 

 a little dilated behind the middle, with very minute, numerous 

 punctures, striate, striae a little obtuse, punctured, interstitial 

 lines depressed, a little convex ; pectus and postpectus punctured, 

 feet rufous ; abdomen minutely punctured. 



This cannot be anicthystinus of authors, if the figure of that 

 insect by Olivier be correct. 



[Afterwards described as C. colaltinus Dej., and a variety as 

 C. congener Lee— -Lec] 



[Vol. II.. 



