EASTERN UNITED STATES. 131 



its duller yellow and less roseate reflection, and both 

 sides more sprinkled with black scales. The costal yel- 

 low of the fore wings is broader, encroaching more upon 

 the orange, the latter being deepest near the base. In 

 some specimens there is very little or even no orange on 

 the fore wings, and in the latter case there is no orange 

 on the hind wings except the large discal spot. Those 

 specimens that have considerable orange on the fore 

 wings have the hind wings washed with orange, but not 

 so deep as the fore wings. The orange discal spot is 

 larger than in the form Eiiryiheme. 



On the under side the yellow is less of a deep yellow 

 and more of a greenish yellow, resulting from a sprink- 

 ling of fine black scales. The discal spot of the fore 

 wings is more or less triangular, white in the centre; 

 the hind wings have one or two discal spots, annulate, 

 with roseate scales, less ferruginous than the typical form. 



Summer form, EURYTHEME, Bd. This is the form 

 first described. 



The egg of this species is .06 of an inch long, narrow, 

 fusiform, tapering evenly from the middle to each ex- 

 tremity, the base broad, the summit pointed ; ribbed 

 longitudinally, and crossed by numerous striae. Color 

 buff-white when first deposited, but after one or two days 

 changing to crimson, and near the close of the stage to 

 black. 



The young larvae are cylindrical, of even diameter to 

 the eleventh segment, each segment several times creased, 

 and on the ridges thus formed many black points, from 

 which spring white hairs. Color dark brown or choco- 

 late. 



After the first moult the length is .125 of an inch; 



