U. S. DEPARTMENT OF AGRICULTURE. 
DIVISION OP ENTOMOLOGY. 
Bulletin No. 2y. 
PWISION OF 
VEGETA^-^pbRT 
ON HIE 
BOLL WORM OF COTTON 
(Heliothis armiger Ilubn.j. 
MADE UNDER THE DIRECTION* OF THE ENTOMOLOGIST 
BY 
F. W. MALLY. 
PUBLISHED BY AUTHORITY OF THE SECRETARY OK AGRICULTURE. 
WASH I NGTON: 
GOVERNMENT PRINTING OFFICE, 
1893. 
