New York AGRICULTURAL EXPERIMENT STATION. 375 
the outer margin of the wing. In some females these stripes are placed 
nearer to each other; and though commonly parallel, in some instances 
from the middle of the wing to the outer margin, or even through their 
entire length, they diverge from each other. In the males they are less 
variable, but the space between them in this sex is frequently pale gray 
and there are also numerous gray hairs on the basal portion, and a few 
toward the apical margin also. The hind wings are of the same color 
as the anterior ones, but without any pale marks. On their under sides 
the wings are the same color as above, and commonly a white band ex- 
tends across both pairs near their middle, that on the fore wings being 
straight and widened at the outer end, that on the hind wings broader 
and curved. The fringe on the fore wings has a white alternation near 
the outer angle and another broader one on the middle; along the inner 
angle and on the hind wings it is white, slightly varied in places with 
dull reddish.. These colors of the fringe are much more distinct in the 
darker colored varieties of the male. The hairs with which the thorax is 
densely coated are often grayish. The stalk on the antenna is dull white 
and its branches are dark, dusky red, sometimes with a whitish line on 
their outer side. The feet are white or yellowish white, particularly in 
the males. The wings, when spread, measure from 1.20 to 1.80 inches in 
the males, and in the females 1.40 to 2 inches. 
- During the first week or ten days of July most of these adults 
have emerged and hence it is during this time that they are most 
numerous. ‘They are not usually seen, however, as their habits 
are nocturnal. The eggs are deposited very soon after the moths 
take flight. Plate XXXIV, Figs 1 and 2, show the moths with 
wings at rest, Figs. 3 and 4 with wings spread, all natural size. 
SUMMARY OF LIFE HISTORY. 
There is but one brood annually. The eggs are laid early in 
July. The caterpillars are fully formed in the eggs by early 
November. ‘They leave the eggs about the middle of the follow- 
ing April. Soon after hatching the caterpillars from each mass 
of eggs begin to build a silken tent, usually in the forks of some 
of the smaller limbs, in which they remain except while feeding. 
They feed upon the leaves and are full grown and ready to pupate 
late in May or early in June. ‘The moths emerge during June or 
early in July. The time for these changes varies according to 
the season. 
