the tip ; the inner one is oblique, and becomes 

 confluent with the suture a little beyond the 

 middle ; the common black sutural vitta includes 

 the scutel at base, and does not reach the tip ; 

 edge all round, black; anal segment with an 

 obscure yellow arc. 



OBSERVATIONS. 



The ornatus of Herbst, in Fuessly's Archives, 

 and of Olivier in the Encyc. Method, is quite a 

 different insect from the present ; but as that is 

 an uncertain species, we prefer retaining the 

 name for our insect. 



This species is an inhabitant of various parts of 

 the United States. I have found it in the middle 

 and southern States, at the Rocky Mountains, 

 and in the North- Western Territory. It is 

 subject to vary, in having the exterior vitta of 

 the elytra so widely interrupted in its continuity, 

 as to exhibit only two remote spots. 



The upper right figure. 



PLATE XXVIII. 



