LKTTHR OF TRANSMITTAL 



U. S. DeparTxMent of Agriculture, 



Bureau of Entomology, 

 Washington, D. C, Novembers, 1911. 

 Sir: I have the honor to transmit lierewith for piibhcation as 

 Bulletin 102 of the Bureau of Entoniolog}^ a report on "Natural 

 Control of Wliite Flies in Florida," by Drs. A. W. Morrill and E. A. 

 Back, both of whom wore formerly employed as special field agents 

 in tills bureau. 



The control of the citrus white flies in Florida by natural means, 

 most important among wliich are the fungous (Useases of these 

 insects and natural insect enemies, is a subject of much importance 

 to the Florida citrus grower. In connection with the investigation 

 of the white fly in Florida a good deal of time has been devoted to this 

 special subject, and the results are here summarized. Tliis investi- 

 gation has been under the general direction of Mr. C. L. Marlatt, 

 assistant cliief of tliis bureau, and has been carried out by the authors 

 named with the assistance and cooperation of Mr. E, L. Worsham, 

 now State entomologist of Georgia, and Mr. W. W. Yothers. 

 Respectfully, 



L. O. Howard, 

 Entomologist and Cliief of Bureau. 

 Hon. James Wilson, 



Secretary of Agriculture. 



