Mr. F. Walker’s Descriptions of Aphides. 17 
4th var. The body is black: the abdomen is dark reddish 
green. 
Variations of the wing-vems. Ist var—There is no upper 
branch in the first fork of the third branch-vein, but the lower 
branch is subdivided. 
2nd var. There is no second fork. 
3rd var. The lower division of the second fork sends forth an 
additional branch which does not reach the border of the wing. 
The oviparous wingless female. This appears in October, and is 
bright red and velvet-like, slightly oval, rather convex: the head 
is black: the disc of the abdomen is dark red: the feelers are 
black, white towards the base and as long as the body: the nec- 
taries are white, with black tips: the legs are white ; the tips of 
the thighs are pale brown ; the feet and the tips of the shanks 
are black. 
The winged male. The body is black: the abdomen is dark 
yellowish red, with a row of black spots on each side : the feelers 
are black, and as long as the body: the mouth is dull yellow, 
black towards the tip: the nectaries are pale yellow with black 
tips, and as long as one-fourth of the body : the thighs are black, 
pale yellow at the base; the shanks are dark reddish yellow, 
their tips and the feet are black : the wing-ribs and the rib-veins 
are pale yellow ; the brands are pale brown ; the veins are brown. 
Ist var. The abdomen is dark red. 
2nd var. The disc of the abdomen is blackish. 
ord var. The abdomen is very dark green, almost black above : 
the feelers are longer than the body ; the fourth joint is much 
shorter than the third; the fifth is shorter than the fourth ; the 
sixth is less than half the length of the fifth; the seventh is 
longer than the fourth, and thick till near their tips: the base 
of the mouth is dull yellow : the nectaries are as long as one-sixth 
of the body: the thighs at the base and the shanks except their 
tips are yellow. It pairs with the oviparous female at the end 
of October and in the beginning of November. 
Length of the body $-13 line; of the wings 23-44 lines. 
The wingless and the winged females as usual appear alter- 
nately, and the peach-tree sometimes loses all its leaves from 
their ravages. Formica nigra is almost constantly attracted by 
it on the peach-tree ; but when it swarms on the sloe in hedges, 
its original condition, large troops of Formica rufa come to feed 
on its honey. 
73. Aphis Rumicis, Linn. 
Aphis Rumicis, Linn. Syst. Nat. i. 734. 5 ; Faun. Suec. 979 ; 
Fabr, Syst. Ins. 11. 385. 11; Syst. Ent. 735. 10; Ent. Syst. iv. 
213. 12 ; Syst. Rhyn. 296. 12; Schrank, Faun. Boic. ii. 1.111. 
Ann. & Mag. N. Hist. Ser. 2. Vol. v. 2 
