
a, Areas in the United States over which the chinch bug occurs in most destructive numbers (from 
Webster). 

rr ae a 
ob 
x 

<x 
aves 
but not in most destructive numbers, 
o 
SO 
iS 
C4 
x x<> 
totes 
b, Shows where chinch bug is found in the United States 
Frac. 2.—Map showing distribution of chinch bug in the United States. 
132 
