Cossidse 
Genus PRIONOXYSTUS Grote 
There are two species of this genus found in the United 
States. One of them, Prionoxystus macmurtrei Guerin-Mene- 
ville = querciperda Fitch, is a rather rare species. It bores its larval 
passages in oak. The female, which resembles the female of the 
other species, is quite large, sometimes four inches in expanse of 
wing. The male, on the other hand, is quite diminutive. I have 
never seen a male much more than an inch and a half in expanse 
of wing. The species has been taken most frequently in recent 
years in western Pennsylvania by local collectors. The other 
species, Prionoxystus robiniae Peck, is very common. It fre¬ 
quents various trees, but shows a preference for the wood of the 
common locust (Robinia pseudacacia ) and various species of 
the genus Populus. The male is depicted on Plate XLI, Fig. n, 
and the female by Fig. 10 on the same plate. The insect is 
widely distributed throughout the United States. I have found 
the males exceedingly abundant about the electric lights in some 
of our Western cities, as St. Paul and Omaha. 
Genus INGUROMORPHA Henry Edwards 
Fig. 213. — Inguro- 
morpha basalis , $ . -l. 
Type of slossoni. 
margin. The hind 
Two species of this genus occur within 
our limits. Both are found in the extreme 
southern portions of the United States. /. 
arbeloides Dyar is a native of Arizona. I. 
basalis Walker, which is shown in the an¬ 
nexed figure, is found in Florida and Mexico. 
The general color of the fore wings is pale 
ashen-gray, with the outer border dull ochre- 
ous, marked with dark-brown striae, and 
broader spots and blotches toward the outer 
wings are darker gray. 
“ I recognize 
The moths, with that great overpoise of wings 
Which makes a mystery of them how at all 
They can stop flying.” 
E. B. Browning. —Aurora Leigh. 
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