U. S. 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. 
NATHAN BANKS, 
A sbistq ) j t Entomolcyisi . 
.WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1 9 2 . 
