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



feelers are gray towards the base and at the tips. When young 

 the fore-part of the body is green ; the limbs are white, but the 

 feelers are sometimes pale green. 



25th var. Small, black, shining, not very convex, with a 

 slight green tinge, and having a row of punctures on each side 

 of the body : the feelers are about half the length of the body : 

 the mouth is dull green with a black tip : the nectaries are not 

 one-twelfth of the length of the body : the legs are dull green. 



26th var. Black : feelers black, shorter than the body, pale 

 towards the base : the nectaries about one- eighth of the length 

 of the body : legs yellow ; four hinder thighs excepting the base, 

 knees, feet and tips of shanks, black. 



27th var. Body dull reddish green. 



28th var. The body is dark green. 



29th var. The body is small, black, slightly covered with a 

 white bloom, increasing in breadth from the head till near the 

 tip of the abdomen, which has a rim on each side : the feelers are 

 shorter than the body : the nectaries are about one-eighth of its 

 length. Found on Galium Mollugo in October near Newcastle 

 by Mr. Hardy. 



Length of the body 1-1|^ line ; of the wings 2^-3^ lines. 



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

 white spots on each side of the abdomen, and its rudimentary 

 wings are very dark green : the fore-border and the hind-border 

 of the fore-chest are dark green : the abdomen is black, but its 

 colour is not so intense as that of the chest, and sometimes it is 

 slightly tinged with green : the feelers are black, and shorter 

 than the body : the eyes are black and shining : the mouth is 

 black ; its base is dull green : the nectaries are black, and 

 rather less than one-sixth of the length of the body: the 

 legs are black, and moderately long ; the shanks, and the fore- 

 thighs except their tips are yellow : the wings are colourless, 

 and much longer than the body ; the wing-ribs are pale yellow ; 

 the wing-brands and the veins are pale brown ; the second vein 

 diverges from the third, but more from the first ; the first fork of 

 the third vein begins after one-third, and the second still more 

 beyond two-thirds of the length ; the fourth is curved moderately 

 and equally throughout its length ; the angle of the brand whence 

 it springs is distinct. Much infested by Leptus Aphidum. 



1st var. While a pupa it is pale dull olive-green, and covered 

 with a white bloom ; the wings are unfolded in the beginning of 

 July, and the insect is then small, black, and shining : the abdo- 

 men is very dark green or black, and has a slight white bloom 

 beneath : the feelers are black, and a little shorter than the body ; 

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

 long as the fourth ; the sixth is much shorter than the fifth, but 



