Technical Series No. 5. 
U. S. DEPARTMENT OF AGRICULTURE. 
DIVISION OF ENTOMOLOGY, 
- 
.A STUDY 
INSECT PARASITISM 
A CONSIDERATION OF THE PARASITES OF THE WHITE-MARKED TUSSOCK MOTH. 
WITH AN ACCOUNT OF THEIR HABITS AND INTERRELATIONS, 
AND WITH DESCRIPTIONS OF NEW SPECIES. 
BY 
L. O. HOWARD, 
ENTOMOLOGIST. 
WASHINGTON: 
G-OVERNMENT PRINTING OFFICE. 
1897. 
