U. S. DEPARTME>^T OF AGRICULTURE, 



DIVISION OF ENTOMOLOGY-BULLETIN NO. 34, NEW SERIES. 



L. O. HOWARD, Entomologist. 



Principal Insects Liable to be Distributed 

 ON Nursery Stock. 



Prepaket) Under the Direction of the Entomologist, 



NATHAN BANKS, 

 Assistant Entomologist. 



