Bui. 111, Bureau of Entomology, U. S. Dept. of Agriculture. 
Plate III. 
Fig. 1.— Upper Row, Normal Hop Cones; Lower Row, Hop Cones Injured by the 
Hop Aphis, i Original.' 
Fig. 2.— Vines in Foreground Severely Injured by the Hop Aphis Showing Lack 
of Growth as Compared with Uninjured Vines in the Distance. 'Original. 
INJURY TO HOPS AND HOPVINES BY THE HOP APHIS. 
