EASTERN UNITED STATES. 



185 



Fig. 51. 



points. The spines vary from black to fulvous and 

 green and yellow. After the fourth moult 

 the larva feeds four or five days and changes 

 to a chrysalis. 



The chrysalis (Fig. 51) is an inch long, 

 variable in color from light yellowish to 

 dark brown ; the head deeply notched, a 

 thin prominence on the thorax, and eight 

 silvery spots on the back. 



The food-plants are hop, elm, nettle, false 

 nettle, and basswood. 



United States generally, except the Pacific 

 States; Arizona. 



56. Grapta Comma, Harris. 



Expanse of wings from 2.25 to 2.5 inches. 



Upper surface fulvous, the outer border black, with a 

 little edging of lilac. The fore wings have a subapical 

 patch of brown, and another at the posterior angle, each 

 enclosing a fulvous spot. Like G. Interrogationis, this 

 species has two spots in the cell and a bar at the end, 

 but there are only three round spots between the cell and 

 the posterior angle, the lowest supplemented by a shade 

 above it. 



Hind wings with ferruginous brown next the border, 

 shading out towards the middle, with a series of pale 

 fulvous spots next the border, and an irregular row of 

 black spots across the middle. 



The under side is' marbled with light and dark brown, 

 and washed with olive, and in the males with more or 

 less of pink. Across the middle the shades are darker, 

 clearly defined externally, beyond which it is washed with 



16* 



