22 



between this and the base of the wing, just outside of the inner cross- 

 line. A similar spot rests near the middle of the base of the wing. 

 The fringes on the forewings are dull yellowish, and broken by eignt 

 brown spots. The antennae are strongly bipectinated, or featlier-like. 

 The fore wings expand about an inch and a half. 



Fig. 2. 



The females, fig. 2, are pale yellowish white, with dark brown 

 cross-lines and spots similar to those of the males. The cross-lines 

 in both sexes are much darker and more prominent on the forward 

 edge of the wings (costa) than elsewhere. In some specimens there 

 is a faint stripe of brown across the middle of the wing {median 

 shade), and a toothed line across the wing near the outer edge 

 {suUerminal line). The fringes of the forewings have eight dark 

 spots between the ends of the veins, as in the males, and similar but 

 fainter spots often occur in the fringes of the hind wings. The body 

 is much stouter than in the males, and the antennae are not so heavily 

 feathered. The expanse of wings is from one and three-fourths to 

 two and three-fourths inches. 



The eggs are globular, about one-eighteenth of an inch in diameter, 

 nearly salmon colored and with a smooth surface. They are laid on 

 the under side of the branches, on the trunks of the trees, often below 

 the surface of the ground where the latter has shrunk away from the 

 tree, and not unfrequently on the fences or on the sides of buildings. 

 They are laid in oval or rounded masses, often to the number of 400 

 or 500, and covered with ocher yellow hairs from the abdomen of the 

 female. The eggs are laid in the early j)art of July, but do not hatch 

 till the following spring. The caterpillars remain together, feeding 

 upon the leaves, and when not feeding they habitually rest side by 

 side on the branches and trunks of the trees. 



The full grown catev})illar, fig. 3. is about an inch and three-fourths 

 in length, very dark brown or black, finely reticulated with pale 

 yellow. There is a pale yellow line along the middle of the back and 



