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



are yellow with brown tips, and not half the length of the body : 

 the eyes are black : the nectaries are white, and about one-twelfth 

 of the length of the body. 



1st var. The body is mottled with paler green : the feelers are 

 nearly all white : the eyes are dark brown. 



2nd var. The nectaries are pale green with brown tips, and 

 about one-seventh of the length of the body. 



It attains its full size in April, and is then greenish yellow, 

 oval, convex, and slightly hairy above : there is a rim on each 

 side of the body, and two vivid green lines along the back : the 

 feelers are almost white with the exception of four black rings, 

 and hardly half the length of the body : the mouth is very pale 

 green ; its tip and the eyes are brown : the nectaries are pale 

 straw-colour with brown tips, and about one-sixth of the length 

 of the body : the legs are very pale green ; the feet and the tips 

 of the shanks are brown. 



3rd var. Yellowish green. 



4th var. Grass-green. 



5th var. The limbs are white ; the feelers are more than half 

 of the length of the body, and the nectaries are about one-fifth 

 of its length. 



6th var. Bright yellow : the limbs are white : the feelers are 

 a little shorter than the body ; the eyes, the tip of the mouth, 

 and the feet are black : the nectaries are one-fourth of the length 

 of the body. 



7th var. In the autumn and when it is young it is pale yel- 

 low and half transparent : the tips of the joints of the feelers, 

 the tip of the mouth, and the feet are black. When full-grown 

 it is yellow, convex, smooth, shining, oval, or nearly elliptic : the 

 feelers are a little shorter than the body : the eyes are red : the 

 nectaries are whitish with black tips, and about one-sixth of the 

 length of the body : the legs are whitish ; the knees are gray ; the 

 feet and the tips of the shanks are black. 



8th var. Like the preceding, but the body is almost white. 



9th var. Like the preceding, but with a lively green stripe down 

 the middle of the body. 



lOch var. The feelers are much longer than the body. 



11th var. Bright yellow : the limbs are pale yellow : the feel- 

 ers are a little longer than the body ; the tips of their joints, the 

 eyes, and the tip of the mouth are black : the nectaries have black 

 tips, and are as long as one-fifth of the body : the knees and the 

 tips of the shanks are gray : the feet are black. 

 ' 12th var. Greenish white. 



13th var. Nearly white. 



It varies much in breadth and in outline ; some of the insects 

 are slender and spindle-shaped, others are stout and elliptical or 



