20 My. F. Walker’s Descriptions of Aphides- 
3rd var. The body is bronze black. 
4th var. The body is shining. 
5th var. The body is covered with a white bloom. 
6th var. There are two stripes of white powder on the back. 
7th var. The feelers and the mouth are black, dull white 
towards the base. 
Sth var. The feelers are nearly as long as the body. 
9th var. The nectaries are as long as one-sixth of the body. 
10th var. The nectaries are as long as one-twelfth of the 
body. 
Lith var. The tips only of the hind-thighs are black. 
32th var. The legs are quite black. 
13th var. Like the last, but the shanks and the fore-thighs 
are dull white. 
14th var. The body is dull sooty black, oval, short, and plump : 
the front is convex, and has a tubercle on each side: the feelers 
are much shorter than the body ; the first and the second joints 
are not angular ; the fourth joint is much shorter than the third ; 
the fifth is shorter than the fourth; the sixth is much shorter 
than the fifth; the seventh is more than twice the length of the 
sixth. 
15th var. The body is black, shining, and has a slight purple 
tint : the feelers are white, black at the base and towards the tips, 
shorter than the body: the eyes and the mouth are black; the 
base of the latter is dull white : the nectaries are as long as one- 
sixth of the body : the legs are white ; the hind-thighs, excepting 
the base, the knees, the feet, and the tips of the shanks, are 
black. 
16th var. The body is dull black: the feelers are white, blackish 
at the tips, and half the length of the body : the base of the mouth 
is dull white: the legs are white; the feet and the tips of the 
shanks are black: when very young it is dark green with paler 
limbs. 
17th var. The body is very dark green, of moderate size, some- 
times nearly black : the feelers are dull white with black tips, and 
nearly as long as the body: the mouth is also dull white; its tip 
and the eyes are black: the nectaries are black, and as long as 
one-fourth of the body: the Jegs are white : the knees, the feet, 
the tips of the shanks, of the hind-thighs, and sometimes also of 
the middle thighs, are black. On Genista anglica during the 
summer. 
18th var.? The body is oval, dull dark red, covered with a 
white bloom: the feelers are white with black tips, and hardly 
more than half the length of the body: the mouth is white; its 
tip and the eyes are black: the nectaries are black, and as long 
as one-eighth of the body: the legs are yellowish white; the 
