83 
anterior edge of larger joints. Legs reaching only to end of wing- 
sheaths. The head-prominence varies in size and slightly in form ” 
(Fourth Mo. Rep., p. 47.) 
Imago. —Prof. C. H. Fernald has kindly furnished me with the 
following descriptions, drawn up from the large series of specimens 
from various localities which he has studied: 
Orange form .—Expanse of wings, from 14 to 20 mm. 
Head, palpi, thorax, and fore wings above, orange-yellow. The 
fore wings are sprinkled with lead-colored scales which are 
arranged somewhat in numerous cross lines. The fringes are 
somewhat lighter in color. The upper side of the hind wings 
and abdomen are pale fuscous and silky. The fringes and anal 
tuft are lighter. The under side of the wings and body, as well as 
the middle and hind legs, are pale yellowish white. The fore legs 
are orange-yellow in front and pale yellowish-white behind. 
Or ay form. Expanse of wings, the same as the orange form. 
Head, palpi, thorax, and fore wings above, ashy gray with more 
or less chestnut-red scales mingled. In some specimens the red 
predominates; in others, the gray; but they intergrade perfectly, so 
that no separation can be made. Occasionally a specimen will be 
found with darker scales arranged in cross lines like those of 
the orange form. A thoracic tuft with a chestnut-colored tip is 
occasionally found. The fringes of the fore wings are ashy gray, 
sometimes stained with reddish. The upper side of the hind wings 
and abdomen are pale fuscous and silky. The fringes and anal 
tuft are lighter. The under side of the wings is pale yellowish 
fuscous, the hinder ones being a little lighter, and with a few 
brownish sprinkles along the costa and outer margin in some ex¬ 
amples. The legs and under side of the body are somewhat 
darker than the wings. 
DISTRIBUTION. 
It is evident that this species is widely distributed, as it has 
been recorded from Maine, New Jersey, Illinois, Missouri, Nevada, 
and Texas. It also occurs, no doubt, in many other states between 
and adjacent to those named. 
LIFE HISTORY. 
The breeding notes of this office confirm the surmise that the life 
history of the species when affecting apple is similar to that of the 
cranberry-feeding specimens. Some larvae collected upon apple stock 
m McLean county May 15, 1886, commenced pupating about May 
22, and by the 27th two thirds of them had pupated. The first 
moths^emerged June 2, and others continued to come forth until 
June (. Another lot of larvae from the same nursery, collected 
May 21, had mostly pupated, and emerged as moths from the 
otli to the llth of June. In every instance these moths were of 
the normal summer orange form. Larvae collected August 6, 1883, 
on young apple trees in a Marion county nursery, emerged as 
orange moths on the 20th of the same month. 
