156 THE BUTTERFLIES OF THE 



boundary of this color a row of seven silver spots. 

 Outer margin brown, fading into yellow at the anal 

 angle, and within this another row of seven large silver 

 spots rounded within and edged with brown. Between 

 these two rows is a bright yellow band without spots. 

 In all there are twenty-four or twenty-five silver spots 

 to each wing. 



Like both the preceding species, this feeds on violets. 

 The egg is conoidal, truncated, broad at base, the sides 

 moderately rounded, depressed at the summit ; marked 

 by eighteen longitudinal ridges, half of which reach the 

 summit, with transverse striae between the ribs. 



The young larva is like that of A. Diana. The mature 

 larva is from 1.8 to 2 inches long. Color velvety black, 

 the under side chocolate-brown. As in A. Diana, there 

 are six rows of slender black spines which are reddish 

 yellow at the base, and beset with many short black 

 bristles. Between each dorsal pair of spines on the 

 joints from 3 to 11 are two gray transverse dots. The 

 spines of the second joint are wholly black, and directed 

 forward, but they are not longer than the others. Head 

 small, subcordate, the front flattened and finely tuber- 

 culated, the back rounded, the vertices having on the 

 anterior side of each a small black process. Color of 

 front dull dark brown, of back reddish yellow. 



The shape of the chrysalis is similar to that of A. 

 Diana. The color is variable, sometimes glossy dark 

 brown, with fine mottlings of reddish orange not dis- 

 tinct, or dark brown mottled with drab, or dark brown 

 mottled with light brown. 



Atlantic and Western States to Nebraska. 



