Mr. F. AValker^s Descriptions 0 / Aphides. 257 
are black : the black spots on the abdomen are confluent and 
form bands. 
6th variety. Pale green ; the tips of the feelers are gray ; the 
sixth joint is longer than the fifths and the last character is com- 
mon to this female during the summer and the autumn : the feet 
and the tips of the shanks are black : the wings are much longer 
than the body. In the middle of June. 
7th variety. The pupa is pale yellowish green : the winged in- 
sect is bright yellow, and often thickly covered with white bloom : 
the middle chest and the middle breast are buff : the feelers are 
black and longer than the body, at the base they are pale green 
or pale yellow, and the latter colour sometimes extends along 
their whole length with the exception of the tip of each joint : 
the mouth is pale green or pale yellow ; its tip is black : the legs 
are pale yellow ; the knees, the feet, and the tips of the shanks 
are black ; the thighs are sometimes pale green with black tips. 
In the beginning of July. 
8th variety. Like the preceding, but with a black stripe on the 
middle of the head, and a black spot on each side : there is also 
a brow'n stripe along the fore-chest : the middle chest and the 
middle breast are black. 
9th variety. Like the preceding, but the middle chest is red, 
and its disc is black : there are two large oblong-quadrate deep 
black spots on the back of the abdomen. 
10th variety. The pupa is pale yellowish green, or pale yellow 
with irregular lively green spots along each side of the abdomen : 
the chest of the winged insect is taw ny, and marked with black, 
and there is a large irregular subquadrate black spot on the middle 
of the abdomen. At the end of August. 
11th variety. A^ellow : the head and the fore-chest are green, 
and each of them has a black line along its hind-border : the 
middle chest and the wing-ribs are orange ; the shield is black, 
and there are tw^o or three black spots on the back of the abdo- 
men ; the wing-brands are pale yellow\ 
12th variety. Like the preceding, but the middle chest and 
the middle breast are bright flesh -colour and marked with black : 
the wLole of the wing-border is orange. 
13th variety. The pupa is bright orange : the head, the fore- 
chest and the limbs are pale yellow : the eyes, the tips of the 
feelers and the tip of the mouth are black. In the beginning of 
October. 
14th variety. The body is of a dark colour : the feelers are 
much shorter than the body, and sometimes not more than half 
its length : the wings are also short. At the end of May. 
There are other but less distinct varieties. 
On the front of the pupa there are bristles, which disappear 
