286 LISL OF HOMOPTEROUS INSECTS. 
Apuis Canorez. 
Aphis Carotw, Koch, Pflanzenl. 112, 46, pl. 21, f. 149. 
Apuis MAanares. 
Aphis Mahaleb, Koch, Pflanzenl. 113, 47, pl. 21, f. 150, 151. 
Aphis Humuli, Cat. Hom. 997. 
Note.—The difference by which Koch distinguishes A. Maha- 
leb from A. Humuli may be owing to the latter being a later gene- 
ration of the former. 
Arnis Humutt. 
Aphis Humuli, Koch, Pflanzenl. 114, 48, pl. 21, f. 152—154 
Cat: Hom. 997. 
ApiIs UMBELLATARUM. 
Aphis umbellatarum, Koch, Pflanzenl. 116, 49, pl. 21, f. 155, 156. 
Apuis Evonymt. 
Aphis Evonymi, Koch, Pflanzenl. 121, 52, pl. 22, f. 163, 164. 
Cat. Hom. 987. 
Apuis Vipurnt. 
Aphis Viburni, Koch, Pflanzenl. 122, 53, pl. 23, f. 165, 166. Cat. 
Hom. 991. 
APHIS CRACCIVORA, 
Aphis eraccivora, Koch, Pflanzenl. 124, 54, pl. 23, f. 167, 168. 
Arnis Matvaz. 
Aphis Malve, Koch, Pflanzenl. 125, 55, pl. 23, f. 169, 170. 
Arnis Ruet. 
Aphis Rhei, Koch, Pflanzenl. 127, 56, pl. 28, f. 171, 172. 
Aphis Rumicis, p., Cat. Hom. 982. 
On Rheum. 
ApHis ocHRopus. 
Aphis ochropus, Koch, Pflanzenl. 128, 57, pl. 24, f. 178, 174. 
On Dipsacus sylvestris and on Chenopodium. 
