Mr. F. Walker's Descriptions of Aphides. 121 



the fifth ; the seventh is nearly as long as the third : the eyes are 

 dark brown : the mouth is pale gi*een with a brown tip : the nec- 

 taries are pale yellow, less than one-twelfth of the length of the 

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

 shanks are brown. In the middle of May. 



1st var. A dark green stripe on the back : feelers pale green, 

 brown towards the tips, and nearly one-fourth of the length of 

 the body: the nectaries are pale green with brown tips, and 

 about one-twentieth of the length of the body : the legs are pale 

 green with brown feet. 



2nd var. The body is pale greenish yellow, mottled with green, 

 and having a green stripe on the back : the feelers are greenish 

 white with brown tips, and less than one-third of the length of 

 the body : the eyes are dark red : the mouth and the legs are 

 greenish white, and the former has a brown tip ; the feet are 

 black : the nectaries are very pale green with brown tips, and 

 nearly one-sixth of the length of the body. 



3rd var. The body is small, oval, convex, plump, dull green : 

 the front is slightly convex, and has no tubercles : the feelers are 

 rather less than half the length of the body ; the first and second 

 joints are not angular ; the fourth is much shorter than the third ; 

 the fifth is shorter than the fourth, and the sLxth is shorter than 

 the fifth ; the seventh is very slender and longer than the fourth : 

 the nectaries are not more than one-twentieth of the length of the 

 body : the legs are rather short. 



The viviparotcs winged female. The second vein diverges slightly 

 from the first, but is nearly parallel to the third ; the forks of the 

 latter are variable in situation, but the second fork is usually 

 rather long; the fourth vein is much curved in the early part of 

 its course, and the angle of the brand whence it springs is very 

 slight. 



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



Common on the sloe in May. 



100. Aphis Prunaria, n. s. 



77ie viviparous wingless female. The body is oval, very plump 

 and convex, dark brown : the front of the head has three slight 

 tubercles : the feelers are about one-foui-th of the length of the 

 body ; the first and second joints are not angular ; the fourth is 

 much shorter than the third ; the fifth is shorter than the fourth, 

 and the sixth than the fifth ; the seventh is a little longer than the 

 sixth : the nectaries are slightly tapering and about one-fifth of 

 the length of the body : the tube at the tip of the abdomen is 

 rather long ; the legs are short. 



On the sloe in May. 

 Ann. ^^ Mag. N. Hist. Ser. 2. Vol. vi. 9 



