PLATE VII. Aphididae. 



1. Longistigma (Lachnus) caryae Harris, — apterous form, x i, 



2. Aphis pomi DeGeer, — green apple aphid, x 2. 



3. Aphis pseudohrassicae Davis, — turnip aphid, x i. 



4. Annraphis tulipae Boyer, x i. 



5. Brevicoryne brassicae Linnaeus, — cabbage aphid, x i. 



6. Amphorophora rhois Monell, x i. 



Photographs by B. H. Walden. 



