Mr. F. Walker^s Descriptions 0/ Aphides. 199 



taries are about one-eighth of the length of the body : the rudi- 

 mentary wings are butf. This colour continues for some little 

 time after the insect acquires wings, which are milk-white for 

 a while after their development. The winged insect is black and 

 small : the feelers are more than half the length of the body : the 

 mouth is dull green with a brown tip : the abdomen is green^ and 

 has a stripe of black spots on each side : the nectaries are black, 

 and about one- sixth of the length of the body : the legs are pale 

 yellow ; the feet and the tips of the shanks are brown ; the four 

 hinder thighs are sometimes black : the wings are very much 

 longer than the body ; the wing-ribs are pale green ; the brands 

 are pale brown ; the veins are brown. 



llth var. Like the last, but the fore-border and the hind- 

 border of the fore-chest are green : the feelers are shorter than 

 the body : the mouth is pale green with a black tip : the nec- 

 taries are green, and as long as one-fifth of the body : the legs 

 are green ; the feet and the tips of the shanks are black : the 

 wing-ribs and the rib-veins are pale yellow. 



12th var. Like the 10th var., but the borders and the under- 

 side of the fore-chest are dull yellow : the tips of the fore-thighs, 

 the middle thighs from the middle to the tips, and the hind- 

 thighs excepting the base, are dull green : the wing-ribs and the 

 rib-veins are pale yellow ; the veins are pale brown. 



13th var. The body is black : the sutures of the segments are 

 dark green : the abdomen is green, and has a row of black spots 

 on each side : the feelers are very much shorter than the body : 

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

 and about one-sixth of the length of the body : the legs are dull 

 yellow ; the feet and the tips of the thighs and of the shanks 

 are black : the wing-ribs are pale yellow ; the brands are dull 

 bufi". 



14th var. The body is black : the fore-chest is dull green : the 

 abdomen is pale grass-green ; the disc of its back is darker, and 

 there is a row of very small black spots on each side : the feelers 

 are black, and rather more than half the length of the body : the 

 mouth is green with a brown tip : the nectaries are black, and 

 about one-tenth of the length of the body : the legs are green ; 

 the feet and the tips of the thighs and of the shanks are black : 

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

 brown. 



15th var. The body is black and rather small : the abdomen, 

 the fore-breast and the borders of the fore-chest are dull green : 

 the feelers are much shorter than the body : the mouth is dull 

 green with a black tip : the nectaries are dull green, and as long 

 as one-sixth of the body : the legs are dark green ; the hind- 

 thighs, the feet, and the tips of the shanks are black : the wing- 



