362 PESTS OF THE HOUSEHOLD AND STORED PRODUCTS 
Fic. 573. — Adult of the Indian-meal Moth. Enlarged and natural size. 
Original. 
of the insects will be killed. Some additional piping may be necessary 
in order to accomplish this, but usually the cost is justified by the 
results, and the improvement, once made, is permanent. 
Fic. 574.— Larve and pupa of the Meal 
Snout-moth. Slightly enlarged. Orig- 
inal. 
The pest may be killed by 
fumigation with carbon bi- 
sulphide or hydrocyanic acid 
gas. 
The Meal Snout-moth (Pyralis 
farinalis Linn.) 
The habits of this species 
resemble those of the Indian- 
meal moth. The larve work in 
grains or grain products, such 
as flour, bran, or meal, and spin 
long tubes of silk, ruining more than they consume. There are three 
or four generations annually under favorable conditions. 
Treatment is the same as for the preceding species. 
