EASTERN UNITED STATES. 159 



has nine silver spots on each fore wing and twenty-five 

 on each hind wing, and the black marks of both sexes 

 are heavier than in A. Aphrodite. This species may 

 readily be known from the preceding by the absence of 

 the yellow submarginal band on the under side of the 

 hind wings. 



The eggs are described as conoidal, truncated, not 

 so broad at the base as Idalia, the sides less rounded ; 

 depressed at the summit ; marked vertically by about 

 eighteen prominent, slightly wavy ribs, half of which 

 reach the summit ; and crossed by transverse striae. 



The young larva is translucent greenish brown, each 

 joint from 3 to 12 marked by eight rows of tubercular 

 dark spots, from each of which arises a long, black, 

 clubbed hair, which is curved forward. On the second 

 segment is a blackish dorsal patch, with two small spots 

 on each side, all furnished with hairs. 



The color after the first moult is yellow-green mottled 

 with brown on the dorsum ; as in the other species, six 

 rows of spines ; the dorsals begin at joint 2 and run to 

 13, the laterals begin at 5 and stop at 12 and 13. The 

 spines are long, tapering, black, and beset with many 

 short and fine bristles. Head subcordate, black. 



After the second moult the color is black-brown, the 

 sides less dark than the dorsum. The tubercles of the 

 dorsal spines are buff on the outside ; the first laterals 

 have black tubercles, the second buff; the intermediate 

 tubercles on anterior segments are yellow. After the 

 next moult the color is velvety black with a brown tint, 

 with the buff changed to dull yellow and a little of it 

 on the first laterals. The head has the front shining 

 black ; the back is yellow. After the fourth moult the 



