BOMB VOIDS. 
127 
ing them with a frothy substance which, on drying, makes a white 
crust. 
Sometimes seen in numbers in June is the salt-marsh moth, 
Leucarctia acrcea. The thorax, the end of the abdomen and the upper 
wings of the male moth are white, while the abdomen and the 
lower wings are yellowish-tan color. Both sets of wings are sprinkled 
with black dots, and the abdomen has two rows of small dots on 
each side and a row of large black spats on the back. The female 
moth differs in color from the male in that the lower wings are white 
instead of tan. The larva of this moth, which is widely distributed, 
is frequently seen in large numbers feeding on the coarse lowland 
grass, not only of the sea-coast, but in the interior of the country. 
It will also attack other plants, and is capable of doing a great deal 
of damage. When full grown it is nearly two inches long, covered 
Phragmatobia rubricosa. ■ 
with long dark brown hairs on the back and lighter hairs on the 
sides. The spiricles along the sides are white, and the skin of the 
caterpillar is yellowish. In the fall the caterpillar conceals itself 
