U. S. DEPARTMENT OE AGRICULTURE, 



BUREAU OF ENTOMOLOGY— BULLETIN No. 99, Part L 



L. O. HOWARD, Entomologist and Chief of Bureau. 



PAPERS ON INSECTS INJIKIOUS TO CITRUS 

 AND OTHER SUBTROPICAL FRUITS. 



THE 0RA:^GE THRIPS: 



A REPORT OF PROGRESS FOR THE 

 YEARS 1909 AND 1910. 



PR. JONES AND J. R. HORTON, 



Agents and Experts, Deciduous Fruit Insect Investigations. 



Issi'Ei) March H, 1911. 



^s^V' 



h8^8 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1911. 



