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



the body : the eyes are dark brown : the mouth is pale green ; 

 its tip is brown : the nectaries are dull green, and as long as one- 

 fourth of the body ; their tips are black : the tip of the abdomen 

 is long, compressed and curved : the legs are pale green, long 

 and slender ; the knees, the feet, and the tips of the shanks are 

 brown. 



1st variety. Grass-green, spindle-shaped, with three darker 

 stripes along the back : the feelers are yellow with black tips : 

 the mouth is yellow ; its tip and the eyes are black : the necta- 

 ries are pale yellow with black tips, and more than one-fourth of 

 the length of the body : the legs are yellow ; the feet and the tips 

 of the shanks are black. 



2nd variety. Pale red, powdered with white : the nectaries and 

 the tip of the mouth are black : the legs are dull white ; the 

 thighs are sometimes green, their tips are brown ; the feet and 

 the tips of the shanks are black. 



3rd variety. Like the preceding, but the nectaries are brown : 

 the thighs are pale green with brown tips. 



4th variety. Dark red. 



5th variety. Red mottled with green. 



6th variety. Green, slightly covered with a white bloom : the 

 feelers are black, but become yellow towards the base. 



7th variety. Green. 8th var. Lilac. 9th var. Rose-colour. 

 10th var. Deep red. 11th var. Body mottled with the above 

 colours. 12th var. Black. 



At the end of May it swarms on the bramble and there attains 

 its largest size ; the shoots are very much adorned with its bright 

 and many-coloured groups, and the offspring assume the hues of 

 their respective parents. 



The middle of the forehead is slightly convex, and there is a 

 tubercle at the base of each feeler : the feelers are nearly as long 

 as or much longer than the body ; the fourth joint is more than 

 half the length of the third ; the fifth is very nearly as long as 

 the fourth ; the sixth is much less than half the length of the 

 fifth ; the seventh i3 usually more than thrice the length of the 

 sixth, but it varies from thrice to six times the length of that 

 joint, and attains its greatest length in the winged insect : the 

 nectaries are fully developed and slightly curved : the tip of the 

 abdomen forms a short tube : the fore-legs are not much shorter 

 than the hind-legs, and all the shanks are slightly curved. 



13th variety. Inhabits the raspberry ii October, is quite white, 

 and its colour accords well with the underside of the leaf where 

 it dwells : the body is long and narrow : the feelers are very much 

 longer than the body : the tip of the mouth is red, as if dipped 

 in raspberry-juice, and part of the stomach has the same coLur, 

 being visible through the almost transparent body when the in- 



