LETTER OF TRANSMITTAL. 
United States Department of Agriculture, 
Bureau of Entomology, 
Washington, D. C, September 1L 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 fly, which for many years has militated 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. 
