84 MOTHS AND BUTTERFLIES. 
The pupa is yellowish-brown, and, by means of rows of short 
spines on the abdominal segments, works its way to the mouth of its 
burrow, when the moth is about to break the shell. The moth comes 
forth in July, and is a night-flyer. The insect is very plain. Its 
wings are parchment-like, resembling in some respects the coddis 
flies. The female is light gray, with a net-work pattern of dark 
brown on the fore wings. The head and thorax are gray, and the 
abdomen and lower wings are brownish-gray. The insect expands 
three inches. The male is much smaller than the female. Its 
Xyleutes robinize. Male. 
forward wings are of a greenish-gray and dark brown, its head and 
thorax gray, abdomen black, and its lower wings orange and_ black. 
Although not a rare insect, on account of its habits it is seldom seen. 
Zeuzera pyrina. The leopard moth is a European species which 
has been introduced into this country. The wings are white, partly 
transparent, and marked with a number of dark spots and rings, from 
which it has derived its popular name. The caterpillar bores tunnels 
in the wood of various trees (elm, ash, maple, pear, apple, etc.), and 
is capable of doing a good deal of damage should it become very 
numerous. It is yellowish, with numerous black spots on the sides 
and back, and has a horny plate on the segment next the head. The 
moth may occasionally be taken about electric lights in the neighbor- 
hood where it has been introduced. 
To the genus Sthenopis belong some rare and interesting moths. 
I have made the acquaintance of but two species of this genus in this 
country, Sthenopis argentomaculatus and S. argentata. ‘These insects 
are much alike, the former being the larger, and measuring three and 
a half inches or more in expanse, while of the latter species, the only 
