U. S. DEPARTMENT OF AGRICULTURE, 
BUREAU OF ENTOMOLOGY— BULLETIN No. 108. 
L. O. HOWARD, Entomologist and Chief of Bureau. 
LEAFHOPPERS AFFECTING CEREALS, GRASSES, 
AND FORAGE CROPS. 
BY 
HERBERT OSBORN, 
Professor of Zoology and Entomology , 
Ohio State University. 
Issued September 12, 1912. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1912. 
