Technical Series, No. 27, Part I. 



U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU Oir ENTOIVLOXjOGY. 



L. 0. HOWARD, Entomologist and Chief of Bureau. 



CLASSIFICATION OF THE ALEYRODID.E. 



PART I. 



BY 



A. L. QUAINTANCE, 



In Charge of Deciduotis Fruit Insect Investigations. 



AND 



A. C. BAKER, 



Expert. 



Issued M.vrch 6, 1913. 



W.\SHTNGTON: 



GOVERNMENT PRINIING OFPIOK, 



1913. 



