<\?% D 
U. S. DEPARTMENT OF AGRICULTURE, 
BUREAU OF ENTOMOLOGY— BULLETIN No. 115. 
L. O. HOWARD, Entomologist and Chief of Bureau. 
THE DISPERSION OF THE 
GIPStTIOTH. 
<Mfc 
•** £& w 
A. F. BURGESS, 
Expert in Charge of Biological Investigations. 
Issued February 11, 1913. 
WASHINGTON: 
GOVERNMENT PRINTING OEEIOE. 
1913. 
