Mr. F. Walker’s Descriptions of Aphides. 275 
Ist var. The body is dark brownish green. 
2nd var. The feelers are nearly one-fourth of the length of the 
body. 
3rd var. The feelers are half the length of the body. 
Ath var. The feelers are three-fourths of the length of the 
body. 
5th var. The nectaries are one-twelfth of the length of the 
body. 
6th var. The fore-legs are longer than usual. 
The viviparous winged female. The pupa is not only distin- 
guished from the wingless insect by its structure, but also by its 
darker colour and by its greater activity: the feelers are brown, 
pale green at the base: the legs are pale green ; the feet and the 
tips of the shanks are brown: the rudimentary wings are pale 
green. The wings are unfolded in May, and the insect is then 
pale olive-green ; the limbs are still paler, and the wings are milk- 
white : it is afterwards black : the abdomen is brassy black above, 
very dark green and covered with white powder beneath: the 
feelers are much shorter than the body; the fourth jomt is 
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: the nectaries are as long as one- 
twelfth of the body: the legs are dull green ; the feet, the tips 
of the thighs and of the shanks, and the whole of the hind- 
thighs are black : the wings are colourless, and very much longer 
than the body : the wing-ribs are almost white ; the wing-brands 
are green ; the veins are brown. 
At least eight young ones may be seen in its body while 
it is yet a pupa: the feelers are a little shorter than the body ; 
the fifth joint is much shorter than the fourth; the seventh 
is nearly thrice the length of the sixth: the fore-legs are only a 
little shorter than the hind-legs ; the fore-shanks are slightly 
curved, and very much longer than those of the wingless female : 
the nectaries are about one-twelfth of the length of the body: 
the widening of the main vein into the wing-brand begins at 
about half the length of the wing; it is very gradual in its ap- 
proach towards, and union with, the fore-border, which is rather 
convex towards the base of the wing: the brand is irregularly 
spindle-shaped, and the fourth branch-vein springs from the 
middle of its hind-border; the third branch-vein is, as usual, 
obsolete before its source from the main-vein; its first fork 
occurs soon after one-third of its length, and its second fork 
soon after five-sixths of its length. 
1st var. The legs are black, with the exception of the yellow 
base of the fore-thighs. 
2nd var. The wing-brands are pale brown. 
18* 
