

U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF ENTOMOLOGY— BULLETIN No. 50. 



L. O. HOWARD, Entomologist. 



THE COTTON BOLLWORM. 



PREPARED UNDER THE DIRECTION OF TflK ENTOMOLOGIST BY 



A. L. QUAINTANCE AND C. T. BRUKS. 



WASHINGTON: 



GOVERNMENT' PR IN TING OFFICE. 



19 5. 



