EXPLANATION OF PLATE XIX. 
Brevicoryne coriandri, n. sp., p. 180. 
1.—Apterous viviparous female. 
2.—Cornicle and cauda of alate female. 
3.—Antenna of alate female. 
4.—Antenna of alate male. 
5.—Wings. 
Brevicoryne chenopodii (Schrank), p. 183. 
(? — Aphis aiviplicis, I,inn., p. 187.) 
6.—Alate female. 
7.—Pseudogall opened to show aphids within. 
8.—Deformed leaves of Chenopodium alba, the food-plant of the species. 
9.—Pseudogall on Chenopodium alba. Nat. size. 
10.—Antenna of alate female. 
11.—Antenna of apterous female. 
12.—Cornicle of apterous female. 
13.—Cornicle of alate female. 
14.—Apterous viviparous female. 
