DESCRIPTION. 



Body pale green : antennm yellowish : thorax 

 armed with numerous small denticles, above 

 compressed, very much elevated into a regularly 

 arcuated carina, forming a portion of a circle, 

 the centre of which, is anterior to the origin of 

 the hemelytra; carina with two yellow radii, 

 and yellow posterior and anterior edges ; posterior 

 half of the edge, prominently denticulated : hem- 

 elytra with about six large brown spots, with 

 pale areolae, placed 2, 2, 2: posterior thighs 

 annulate, with yellow. 



OBSERVATIONS. 



When returning with a detachment of Major 

 Long's party, at the distance of about an hundred 

 and fifty miles from the mountains, on the banks 

 of the Arkansaw river, I had the pleasure to find 

 a considerable number of this uncommonly beau- 

 tiful species. It occurred only in a very limited 

 district, and was not afterwards seen. 



The middle figure, with a wing above on the 

 left. 



PLATE XXXIV. 



