4' 



r 



North American Coleopterous Insects. 191 



Casstda, Linn. 



C. unijpunctata, Nob., Journ. Acad. Nat. Sc, Vol. iii. 



A variety of this species occurs in Mexico, of a smaller 

 size, with sometimes a black, arcuated, transverse line 

 behind the abbreviated thoracic line. The inferior sur- 

 face, in some specimens, is black, the feet varied with 

 whitish, and whitish triangular lateral spots on the inci- 

 sures of the venter; in others the inferior surface is pale 

 greenish-yellow, more or less varied with black, the 

 spiracles black. — It is an abundant species. 



CLyxHBA, Leach., Fabr. 



C. mucida. Black, metallic ; head, thorax, and beneath 



with white hair. 



Inhabits Mexico. 



Body blackish, punctured : head with a coppery tinge, 

 and covered with prostrate white hair : labrum honey- 

 yellow : palpi blackish : antenmz piceous : thorax tinged 

 with cupreous, with dense, small punctures, and covered 

 with white prostrate hair: scutd with prostrate white 

 hair : dytra naked, with blue and coppery reflections, 

 confluently punctured, lateral edge deeply arcuated : be- 

 ^.nih onvfired with white prostrate hair : feet piceous. 



Leno-th over one fourth of an inch. 



Much 



hairy above, and the lateral edge of the elytra more pro- 

 foundly excavated. 



Chr^somela, Linn. 



C. harda. Green ; elytra with rounded whitish spots. 

 Inhabits Mexico. 



VOL. I. PAKT II. 26 



