218 ACADEMY OF NATURAL SCIENCES 



6. C. AURIPENNIS. — Violaceous; margin of the thorax 

 thickened ; elytra golden. 



Inhabits Arkansa. 



Body violaceous : antennae black, dark violaceous at base : tho- 

 rax with slight, distant punctures ; lateral margin much thickened : 

 scutel violaceous, rounded : elytra golden-cupreous, brilliant ; ex- 

 terior edge green, punctured ; punctures placed in somewhat 

 regular series. 



Length more than one-fourth of an inch. 



A very beautiful insect, of which I obtained but a single speci- 

 men near the Rocky Mountains. 



7. C FLAVOMARGTNATA. — Black ; thoracic margin thickened; 

 elytra margined with yellowish. 



Inhabits Missouri. 



Body black, punctured : thorax, punctures each side larger ; 

 lateral margin thickened : elytra with regular series of punctures, 

 and smaller irregularly disposed punctures : exterior margin and 

 tip yellowish ; beneath black. 



Length more than one-fourth of an inch. 



Collected in Missouri by Mr. T. Nuttall. [453] 



HELODES Payk. 



H. OBSOLETA. — Black; thorax and elytra margined with yel- 

 lowish. 



Inhabits Missouri. 



Body blackish, punctured ; head and thorax tinged with green, 

 margin of the latter yellowish, thickened, with a black, insu- 

 lated point : elytra tinged with violaceous, irregularly punctured; 

 margin, tip, and obsolete lines before and behind the middle, yel- 

 lowish : beneath black, immaculate. 



Length three-tenths of an inch. * 



Var. a. Obsolete lines none. 



[Belongs to Chrysomela, as at present received. — Lec] 



DORYPHORA Illig. 



1. J). 10-LiNEATA. — Yellow; thorax litterate, with black; ely- 

 tra each with five black lines. 

 Inhabits Missouri and Arkansa. 



[Vol. III. 



