LETTER OF TRANSMITTAL. 



United States Department of Agricultuee, 



Bureau of Entomology, 

 Washington, D. C, Septemher 11, 1912. 

 Sir: I have the honor to transmit herewith an account of the trip 

 undertaken by Mr. Russell S. Woglum, a special agent of this bureau, 

 to India and the Orient in search of the natural enemies of the citrus 

 white fiy, which for many years has miUtated against the successful 

 commercial operation of the orange-growing industry in Florida and 

 elsewhere. This paper is especially valuable in view of the fact that 

 Mr. Woglum not only has located many of the natural enemies of the 

 citrus white fly in their native habitat, but has, as well, demonstrated 

 the correct methods of procedure in the transshipping, alive, of 

 predaceous and parasitic material, which has heretofore rendered the 

 importation of natural enemies of our insect pests so precarious. I 

 recommend the publication of this manuscript as Bulletin No. 120 

 of this bureau. 



Respectfully, L. O. Howard, 



Entomologist and Chief of Bureau. 

 Hon. James Wilson, 



Secretary of Agriculture. 



