276 LIST OF HOMOPTEROUS INSEOTS. 
ward; costa convex and almost angular towards the base; veins 
white. Hind wings vitreous. Length of the body 1} line; of the 
wings 3 lines. 
a, Tasmania. From Mr. A. J. Smith’s collection. 
Genus TRIOZA, Cat. Hom. p. 924. 
Trioza Gari, Cat. Hom. p. 928. 
a,b. Ireland. Presented by A. H. Haliday, Esq. 
Genus APHALARA, Cat. Hom. p. 929. 
ApHaLara Potycont, Cat. Hom. p. 980. 
a—c. Prussia. Presented by F. Walker, Esq. 
Fam. APHIDINA. 
Genus CHAITOPHORUS. 
Chaitophorus, Koch, Pflanzenlause, 1. 
Aphis, Groups 1, 1] and 20 (p.), Cat. Hom. 934, 950, 962. 
Aphis Aceris may he considered as the type of this genus; 
some of the species included in it differ much from the typical 
form. 
1. CHAITOPHORUS XANTHOMELAS. 
Chaitophorus xanthomelas, Koch, Pflanzenl. 1, 1, pl. 1, f. 1. 
Chaitophorus Aceris, var. (Kaltenbach), Cat. Hom. 950. 
2. CHAITorpHoRuS CORACINUS, 
Chaitophorus coracinus, Koch, Pflanzenl. 2, 2, pl. 1, f. 2—4. 
Chaitophorus Aceris, var. (Kalt.), Cat. Hom. 950. 
On Acer platanoides. 
3. CHAITOPHORUS LEUCOMELAS. 
Chaitophorus leucomelas, Koch, Pflanzenl. 4, 3, pl. 1, f. 5, 6. 
On Populus italica and P, nigra. 
