Wr oa DEPARTMENT OF AGRICULTURE, 
DIVISION OF ENTOMOLOGY—BULLETIN NO. 34, NEW SERIES, 
L. O. HOWARD, Entomologist. 
PRINCIPAL INSECTS LIABLE TO BE DISTRIBUTED 
ON NURSERY STOCK. 
PREPARED UNDER THE DIRECTION OF THE ENTOMOLOGIST, 
BY 
NATHAN BANKS, 
Assistant Entomologist. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE, 
1902. 
