U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF ENTOMOLOGY— BULLETIN No. 57. 



L. O. HOWARD, Entomologist. 



REPORT 



PREPARED UNDER THE DIRECTION OF THE ENTOMOLOGIST 



E. DWIGHT SANDERSON, 



Special Agent, Bureau of Entomology, in Cooperation with the Entomological Department, 

 Agricultural and Mechanical College of Texas. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1906. 



