Pyralidae 
transformation quite rapidly and is known to produce as many 
as four generations in a year. The caterpillars prefer the dark 
corners of meal-bins and the nooks of granaries and elevators 
which are least disturbed, and here will, unless they are detected 
and their ravages checked, establish centers of infection, from 
which they will go forth to do a vast amount of mischief. The 
caterpillars form long cases or tunnels of silk mixed with the 
debris of their food, in which they are quite effectually concealed 
from view. The best remedy is cleanliness, and frequent moving 
of stored products. 
Genus HERCULIA Walker 
(1) Herculia olinalis Guenee, Plate XLVIII, Fig. 13, $. 
Syn. trentonalis Lederer. 
The species is widely distributed throughout the United States 
and Canada. The larvae feed upon the leaves of the oak. 
(2) Herculia himonialis Zeller, Plate XLVII, Fig. 46, $ . 
The moth is found from New England to Pennsylvania. It is 
not uncommon among the Alleghany Mountains about Cresson. 
SUBFAMILY CHRYSAUGIN/E 
This is a small subfamily, represented in our fauna by nine 
genera. Two of these we have selected for representation. 
Genus SALOBRANA Walker 
(1) Salobrana tecomae Riley, Plate XLVIII, Fig. 11, $. 
This curious little moth feeds in its larval state upon the inte¬ 
rior of the seed-pods of the common trumpet-vine ( Tecoma ). 
The eggs are deposited when the pods are forming, and the larvae 
develop within them until in the fall, when they become dormant, 
hibernating in their burrows until the following spring, when 
they prepare for their escape by making an orifice in the outer 
shell of the pod and transforming into pupae. An excellent 
account of their habits has been given by the late Professor C. V. 
Riley in the “American Entomologist,” Vol. Ill, p. 288. The 
moth is found in the southwestern portions of the United States, 
in the West Indies, and in Mexico and Central America. 
401 
