198 Mr. F. Walker's Descriptions of Aphides. 



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

 the wing-ribs are pale yellow. 



3rd var. The back of the abdomen is black, and it is traversed 

 by green bands, one of which near the base is broader than the 

 rest ; the nectaries are as long as one-sixth of the body. 



4th var. The abdomen is green, and its back is traversed by 

 confluent black bands : the feelers are nearly as long as the body : 

 the mouth is pale yellow with a black tip : the nectaries are also 

 pale yellow with black tips, and as long as one- sixth of the body : 

 the thighs and the wing-ribs are pale yellow. 



5th var. Like the preceding, but the borders of the fore-chest 

 and the fore-breast are dull yellow. 



6th var. Black, shining : the borders of the fore-chest are 

 dark green : the abdomen is pale green at the base and beneath ; 

 the disc and the hind-part are almost black : the feelers are less 

 than half the length of the body : the nectaries are black, and 

 about one-seventh of the length of the body : the legs are dull 

 yellow ; the feet and the tips of the shanks are black : the wings 

 are nearly twice the length of the body ; the wing-ribs are pale 

 yellow ; the wing-brands are pale brown, and very long ; the veins 

 are brown. On Anethum Fceniculum, in the beginning of May. 



7th var. Black : the base and the underside of the abdomen 

 and the mouth are green, and the tip of the latter is black : the 

 feelers are nearly as long as the body : the nectaries are about 

 one-sixth of the length of the body : the legs are pale yellow ; 

 the feet, and the tips of the thighs and of the shanks are black. 

 On Peucedanum officinale, at the end of May. 



8th var. Black : the fore-border and the hind-border of the 

 fore-chest and the abdomen are green ; the latter is sometimes 

 traversed by black bands : the feelers are much shorter than the 

 body : the mouth is green with a black tip : the legs are yellow ; 

 the feet and the tips of the shanks are black \ the tips of the 

 thighs are sometimes brown. 



9th var. Black : the abdomen is very dark green with a row 

 of black spots on each side ; its underside is rather pale : the 

 feelers are rather shorter than the body, or sometimes about 

 half its length : the mouth is dark green with a black tip : the 

 nectaries are one-fifth or one-sixth of the length of the body : 

 the legs are dark dull green or dull yellow ; the feet and the 

 tips of the thighs and of the shanks are brown or black : the 

 wing- brands are dark green or pale brown. On Chcerophyllum 

 sylvcstre, in the beginning of May. 



10th var. While a pupa it is pale yellowish green, with two 

 vivid green stripes along the back : the feelers are full one-third 

 or sometimes more than half the length of the body : the nee- 



