U. S. DEPARTMENT OF AGRICULTURE, 
BUREAU OF ENTOMOLOGY— BULLETIN No. 91. 
L. O. HOWARD, En:omo!ogIsl and Chief of Bureau. 
THE IMPORTATION INTO THE UNITED STATES 
OF THE PARASITES OF THE OiPSY MOTH 
AND THE BROWN-TAIL MOTH: 
A B BPORT OF PROGRESS, WITB SOME CONSIDERATION OF 
PSEYIOUS LSD CONCURRENT EFFORTS OF THIS KIND. 
BY 
L. O. HOWARD, 
Chief, Bureau cf Entomology, 
AND 
W. F. FLSKE, 
In Charge, Gipsy Moth Parasite Laboratory, 
Mebrace Eijhlcmds, Mass. 
rastJBD July 29, 1911. 
WASHINGTON : 
GOVERNMENT PRINTING OFFICE. 
ID' 1. 
