6 Farmers’ Bulletin 1223. 
other having long wings which reach almost to the tip of the abdo- 
men. The long-winged form (fig. 2,/) occurs over most of the coun- 
try between the Rocky Mountains and the Allegheny Mountains. 
Fic. 2.—The chinch bug: a-—d, First to fourth instars, respectively; e, pupa; f, adult 
female, long-winged form; g, genitalia of the female; h, genitalia of the male. Greatly 
enlarged. (Luginbill.) 
The short-winged form (fig. 3) has been found to exist principally 
along the seacoast, and in the East extends inland along the lower 
Great Lakes to Northern Illinois. It is not abundant, however, 
