90 



tiansverse line distinct, obtusely angulated opposite the reniform 

 spot, the posterior boundary of which it reaches, thus running obli- 

 quely to the posterior margin. At the angle of this line is an ob- 

 scure reddish shade which invades the reniform spot. 



Posterior transverse line broader than the others, oblique, nearly 

 black. Between this and the subterminal line is a purple shade, 

 heaviest inward. The latter line is irregularly scalloped, being den- 

 tate on the veins. A slender terminal line ; fringes purple whitish at 

 base, costa with two oblique white marks in the vicinity of the 

 transverse line or between that and the subterminal. 



Fringe of posterior wings white, slightly tinged with purplish ; 

 under surface of both wings pale yellow, with purple shades corres- 

 ponding to those of the upper surface, and a purple spot representing 

 the reniform. 



DISTRIBUTION AND LIFE HISTORY." 



This species has been reported from Canada to Pennsylvania and 

 Illinois, occurring in the last throughout the whole State. Speci- 

 mens found upon blackberries, May 28, pupated about June 15 and 

 commenced to emerge on the 5th July, the last of this lot appear- 

 ing August '21. Another specimen entered the earth July 10, and 

 emerged on the 18th August. With Prof. French of Carbondale, 

 larvse ol)tained early in June had all entered the earth on the 19th, 

 and emerged from August 5 to 31. On the other hand, larvse of 

 Pyrrhia angulala (not impossibly identical with this) obtained by 

 Coquillet from smartweed {Polyfionum j^ennsylranicum) September 15, 

 entered the earth on the '27th and disclosed the imagos on the 22d 

 May of the following year, and a few days thereafter. It is conse- 

 quently possible that this species is two brooded. 



INJURIES TO VEGETATION. 



The injuries to vegetation noted thus far, are confined to the 

 worthless plants Desmodium and Polygonum, and to the rose and 

 the blackberry. By Prof. French, in Jackson county, the young 

 larvcP, when about half an inch in length, were noticed eating and 

 disfiguring roses, feeding within the flower rather than on the out- 

 side, and seeming to prefer the bases of the petals. 



At Normal, as already mentioned, the larvse were found only upon 

 the blackberry, devouring' the leaves. The damage was occasionally 

 decidedly serious, in some cases nearly every cane bearing one or 

 more of the larvse. These were feeding upon the tender leaves near 

 the ends of the stalks, in company with OxyptUus delavaricus. 



