Mr. F. Walker^s Desciiptions of Aphides. 279 



fourth joint is shorter than the third ; the fifth is a little shorter 

 than the fourth ; the sixth is a little shorter than the fifth ; the 

 seventh is nearly twice the length of the sixth. 



1st var. Dark bronze colour. 



2nd var. Pale whitish green ; limbs darker. 



3rd var. Black and white, or piebald. 



4th var. Dark velvet-like red : the feelers are white with black 

 tips : the mouth also is white ; its tip, the eyes and the nectaries 

 are black : there is a large and somewhat pale spot on the disc of 

 the body : the legs are white ; the four hinder thighs, the fore- 

 knees, the feet and the tips of the shanks are black. When very 

 young it is pale red, and its legs excepting the feet are nearly 

 all white. 



It is infested by an Aphidius. The clusters of dead bodies 

 which stick to the leaves are consumed by little Acari. 



The viviparous winged female. While a pupa it has spots of 

 white powder in a row on each side of the body : when the v ings 

 are unfolded it is stout, thick, black, shining, and has a slight 

 metallic tinge : the feelers are more than half the length of the 

 body; the fourth joint is shorter than the third; the fifth is 

 shorter than the fourth ; the sixth is much shorter than the 

 fifth ; the seventh is hardly twice the length of the sixth ; 

 the mouth is dull green with a black tip : the nectaries are 

 not more than one-tenth of the length of the body : the legs 

 are black ; the shanks except their tips, the base of the thighs, 

 and nearly the whole of the fore- thighs, are yellow : the wings 

 are colourless, and are very much longer than the body; the 

 wing-ribs and the rib-veins are pale yellow ; the wing-brands are 

 dull bufi"; the other veins are brown ; the second vein diverges 

 much more from the first than it does from the third ; the first 

 fork of the latter vein begins after one- third, and the second still 

 more beyond two-thirds of its length ; the fourth, vein is more 

 curved at its source than near its tip : the angle whence it springs 

 is very slight. 



1st var. Pale whitish green with dark limbs. 



2nd var. Body black and white. 



3rd var. Wings with a slight yellow tinge. 



4th var. Body small, black : abdomen dark green : the seventh 

 joint of the feelers is more than twice the length of the sixth. 



Length of the body ^-f line ; of the wings lf-2^ lines. 



Variations in the veins of the wings. J st var. — The fourth 

 branch-vein forms an angle, and a short cross-vein passes from 

 it to the second fork of the third branch- vein : in the opposite 

 wing the branches of the second fork having separated reunite, 

 and form a little elliptical areolet, and then again divide to form 

 the fork. 



