U.S. DEPARTMENT OF AGRICULTURE. 
DIVISION OF ENTOMOLOGY. 
BULLETIN No. 17. 
CEEUN OE. DUG: 
A GENERAL SUMMARY OF ITS HISTORY, HABITS, ENEMIES, AND OF 
THE REMEDIES AND PREVENTIVES TO BE USED AGAINST IT, 
By L. O. HOWARD, M. &., 
ASSISTANT ENTOMOLOGIST. 
——————_ —= o >} oe ——_—- 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1888. 
