Pyralidie 



transformation quite rapidly and is known to produce as m;!ny 

 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 V/alker 

 (i) Herculia olinalis Guenee, Plate XLVllI, Fig. 13, $ . 



Syn. tre7ito7ialis Lederer. 



The species is widely distributed throughout the United States 

 and Canada. The larvse feed upon the leaves of the oak. 



(2) Herculia himonialis Zeller, Plate XLVIl, 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 



(i) Salobrana tecomae Riley, Plate XLVill, Fig. 1 1, ? . 



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 pup?e. 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 



