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



of March. It is green : the disc of the chest and that of the 

 breast, the feelers, the tip of the mouth, the tips of the nectaries, 

 the knees, the feet, and the tips of the shanks are brown : the 

 feelers are more than half the length of the body ; the fourth 

 joint is very much shorter than the third ; the fifth is a little 

 shorter than the fourth ; the sixth is shorter than the fifth ; the 

 seventh is a little longer than the sixth ; and the nectaries are 

 about one-sixth of the length of the body : the wings are colour- 

 less and about twice the length of the body: the wing- ribs and 

 the brands are green, and the veins are pale brown ; the first and 

 the second veins diverge much from each other, but the second 

 and the third veins are nearly parallel ; the latter has its first fork 

 after one-third and its second fork a little before two-thirds of 

 its length ; it is more or less obsolete at the base ; the fourth vein 

 is much curved, and the angle of the brand whence it springs is 

 hardly perceptible. 



Variations of the wing -veins. — 1st var. The lower branch of 

 the first fork of the third vein is wanting. 



Length of the body f line ; of the wings 2 J lines. 



64. Aphis Rosarum, Kalt. 



Aphis Rosarum, Kalt. Mon. Pflan. i. 101. 76. 



This species feeds on Rosa centifolia and gallica in gardens, 

 and Mr. Hardy has forwarded to me specimens found on Rosa 

 spinosissima in October near Newcastle. 



The viviparous wingless female. This little species appears on 

 the rose {Rosa centifolia and gallica) in the beginning of March 

 or later, and is then dull green, paler beneath, rather flat, and 

 very long : the feelers are rather more than one-fourth, and the 

 nectaries are about one-seventh of the length of the body : the 

 eyes are brown : the legs are short and stout. During its growth 

 it acquires a brighter green hue, and then the limbs are almost 

 white : the front of the head is very convex in the middle : the 

 first joint of the feelers has a slight protuberance on the inner 

 side of its tip ; the fourth joint is shorter than the third, but 

 longer than the fifth ; the sixth is a little shorter than the fifth ; 

 the seventh is much longer than the sixth. It much resembles 

 A. Caprece. 



1st var. Whitish green, with two vivid green stripes along the 

 back. 



2nd var. Whitish green, with two bluish green stripes along 

 the back. 



The viviparous winged female. Is black : the fore-chest is green, 

 having in front a blackish green band which is sometimes broad 

 and sometimes narrow : the abdomen is green ; each segment is 

 traversed by a black band and has a black spot on each side : the 



