Bui. 11 0, Bureau of Entomology, U. S. Dept. of Agriculture. 
Plate II. 
Fig. 1.— Stand on which Rearing Experiments were Carried Out in Rearing the 
Spring Grain-Aphis. (Original.) 
Fig. 2.— Area on Grounds of the United States Department of Agriculture, 
at Washington, D. C., where the Spring Grain-Aphis Usually Occurs on 
Bluegrass in Excessive Abundance During Summer. 
The area infested is indicated by 
(Original.) 
