U. S. DEPARTMENT OF AGRICULTURE. 
DIVISION OF ENTOMOLOGY— BULLETIN No. 43, 
L. 0. HOWARD, Entomologist. 
A BRIEF ACCOUNT 
OF THE 
BY 
F. PI. oiiiTTE]srDE:^sr, 
Entomologist in Charge of Breeding Experiments. 
WASHINGTON- 
GOVERNMENT PRINTING OFFICE. 
1 ( ) a . 
