U.S. DEPARTMENT OF AGRICULTURE. 
DIVISION OF ENTOMOLOGY. 
BIBLIO G U API I V 
OF 
THE MORE IMPORTANT CONTRIBUTIONS 
r 
TO 
AMERICAN ECONOMIC ENTOMOLOGY. 
PREPARED, BY AUTHORITY OF THE SECRETARY OF AGRICULTURE, 
T r 
SAMUEL HENSHAW. 
IISTDEX 
TO 
Parts I, II, and III. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
189 0 . 
