Genus Phyciodes 



and the pale, silvery crescent on the outer margin. Expanse, $ , 

 1.25-1.65 inch; ?, i. 65-2. oo inches. 



Egg. The egg is half as high again as broad, marked with 

 sixteen or seventeen vertical ribs above, and pitted about the 

 middle by hexagonal cells. It is pale green in color. 



Caterpillar. The caterpillar undergoes four moults after 

 hatching. In the mature stage it is velvety-black, with a dull 

 orange stripe along the back, and purplish streaks on the sides. 

 The body is studded with whitish spots, each giving rise to a 

 delicate black hair, and is further beset with rather short, black, 

 hairy spines. 



Chrysalis. The chrysalis is pearly-gray, blotched with dark 

 brown. 



The life-history of this species has been carefully worked out, 

 and all the details may be found described in the most minute 

 manner by Edwards and by Scudder. 



The insect ranges from Maine to North Carolina, and thence 

 westward to the foot-hills of the Rocky Mountains. 



(2) Phyciodes ismeria, Boisduval and Leconte, Plate XVII, 

 Fig. 24, 6 ; Fig. 25, $ , under side (Ismeria). 



Butterfly, 3 . Easily distinguished from all other allied species 

 by the double row of small light spots on the dark margin of the 

 fore wings on the upper side, and by the silvery, narrow, and 

 greatly bent line of bright silvery spots crossing the middle of the 

 hind wings on the under side. 



? . The female is like the male, but larger and paler, and all 

 the spots on the upper side are pale fulvous, and not as distinctly 

 white on the outer margin as in the male sex. Expanse, 3 , 

 1. 15-1.35 inch; ?, 1.35-2.00 inches. 



Caterpillar. The caterpillar, according to Boisduval and 

 Leconte, is yellowish, with blackish spines and three longitudinal 

 blackish stripes. The head, the thoracic legs, and the under side 

 are black ; the other legs are yellow. 



Chrysalis. According to the same authors, the chrysalis is 

 pale gray, with paler light spots and nearly white dorsal tubercles. 



This insect ranges over a wide territory from Canada to the 

 Southern and Western States east of the Rocky Mountains. 



(3) Phyciodes vesta, Edwards, Plate XVII, Fig. 17, 6 ; Fig. 

 1 8, ? ; Fig. 19, $ , under side (Vesta). 



Butterfly, $, . On the upper side it closely resembles the win- 



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