306 Report oF THE ENTOMOLOGISTS OF THE 
perceptible, its edges on each side indefinite. The fringe is of the same color 
with the wings, or slightly darker, and is tipped with whitish. The under side 
is paler umber brown, the hind wings often gray, and both pairs are often 
crossed by a narrow, dark brown band, which, on the hind wings, are curved 
outside the middle. All back of this band, on both wings, is often paler, and 
more so near the band.” 
“The female is 1.75 inches wide, and in addition to the shortness of the 
branches of her antenne, differs from the male in her fore-wings, which are 
proportionally narrower and longer, with their hind margin cut off more ob- 
liquely, and slightly wavy along its edge. Hence, also the dark brown lines 
cross the wings more obliquely, the hind one in particular forming a much 
more acute angle with the outer margin. And all the wing back of this line 
is sometimes paler or of a brownish, ashy color. And the fringe of these wings 
has not the two whitish alternations which are often so conspicuous in the 
male. .The head and fore part of the thorax is cinnamon brown. The abdomen 
is black, clothed with brown hairs, though very thinly so on the anterior part 
of each segment, where these lines are intermingled with silvery gray scales.” 
Varieties.— Two varieties of this species have been described. 
Numerous specimens of both were reared from the cocoons above 
referred to. They are as follows: 
Variety sylvatica Harr. has the space between the lines filled 
in forming a broad brown band across each anterior wing. Plate 
XXV, third row; the two on the left are males and the third a 
female. 
Variety thoracicoides Neumoegen and Dyar, has the bands 
wanting or very obscure. Plate XXV, fourth row; all males. 
Among the specimens reared in the laboratory there was 
an interesting series showing a gradual gradation from the light 
typical form with the two well marked bands, to the variety 
sylvatica having the space between filled in with brown forming 
the broad bands as above described. Plate XXV, fifth row. 
SUMMARY OF LIFE-HISTORY. 
In the latitude of New York State the eggs are usually laid 
during the last week of June and until about the second week of 
July. They are placed in bands extending around the twig and 
are covered with a shining frothy glue. The caterpillars are fully 
formed in the eggs before the summer is over, but do not escape 
until early the following spring, They feed upon the foliage of a 
