ORGANIZATION OF THE UNITED STATES DEPARTMENT OF 
AGRICULTURE. 
Secretary of Agriculture Henby C. Wallace. 
Assistant Secretary C. W. Pugsley. 
Director of Scientific Work E. D. Ball. 
Director of Regulatory Work ' 
Weather Hurra,/ Charles F. Maevin, Chief. 
Bureau of Agricultural Economics Henby C. Taylor, Chief. 
Bun mi of Animal Industry John R. Mohler, Chief. 
Bureau of Plant Industry William A. Taylor, Chief. 
Forest service W. B. Greeley, Chief. 
Bureau of Chemistry Walter G. Campbell, A cting Chief. 
Bureau of Soils Milton Whitney, Chief. 
Bureau of Entomology L. O. Howard, Chief. 
Bureau of Biological Survey E. W. Nelson. Chief. 
Bureau of Public Roads Thomas H. MacDonald, Chief. 
Fixed Nitrogen Research Laboratory F. G. Cottrell, Director. 
Division of Account* ami Disbursements __ A. Zappone, Chief. 
Division of Publications John L. Cobbs, Jr., Chief. 
lAbrary Claribel R. Barrett. Librarian. 
States Relations Servid A. C. True, Director. 
Federal Horticultural Board - C. L. Mablatt, Chairman. 
Insecticide and Fungicide Board J. K. Haywood, Chairman. 
Packers and Stockyards Administration—. Chester Morrill, .4 ssistant to the 
Grain Future Trading Act Administration Secretary. 
Office of the Solicitor R. W. Williams, Solicitor. 
This bulletin is a contribution from — 
Bmeau of Entomology L. O. Howard. Chief. 
Tropical and Subtropical Fruit Insect 
Investigations A. L. Qtjaintance, in Charge. 
ADDITIONAL COPIES 
OF THIS PUBLICATION' MAY BE PROCURED FROM 
THE SUPERINTENDENT OF DOCUMEXTS 
GOYERNMENT PRINTING OFFICE 
WASHINGTON, D. C. 
AT 
5 CENTS PER COPY 
ID 
