Bui. ' Sureau of Entomology, U. S. Dept. o* Agriculture. 



Plate V. 



Fig. 1 .—Eggs of Hippodamia convergens Among Hop Aphides on Leaf. Original.) 



Fig. 2.— Syrphus Fly Larwe Feeding upon the Hop Aphis. 'Original.: 

 SOME NATURAL ENEMIES OF THE HOP APHIS. 



