116 



THE BUTTERFLIES OF THE 



Pig. 30. 



of the egg from which it emerges, then covers a space 

 with silk, where it rests except when feeding. 



When full grown, the larva is about an inch and a 

 half long, of a pale green color, finely dotted with 

 black ; a pale yellow dorsal stripe, 

 sometimes indistinct, and a row of 

 yellow spots along the region of the 

 stigmata. 



The chrysalis (Fig. 30, b) varies in 

 color from a dull yellowish green to 

 an ash-gray, a light gray with nu- 

 merous black points being the most 

 common form. 



There are probably two broods of 

 this species in the most northern por- 

 tions of the United States, in the lat- 

 itude of Southern Illinois three at 

 least occur, and it is quite probable 

 that still farther south there are four or five. Like the 

 other species, it hibernates in the pupa state. 



New England to the Rocky Mountains ; south to 

 Georgia. 



15. Nathalis Iole, Bd. 



Expanse of wings from 1.1 to 1.15 inches. 



Upper surface yellow ; a large patch of black across 

 the apex of fore wings, and a stripe of the same along 

 the hind margin. The fringes and a little along the 

 outer part of the costa are yellow ; and the black along 

 the hind margin does not quite reach that margin, nor 

 does it extend to the end of the wing, but bends forward 

 a little before reaching the posterior angle, where it is 



P. Rapse : a, larva ; 6, 

 pupa. 



