xliv Mr. F. Walker's 



the rostrum is a little paler towards the base : the tubes are dark green, with black 

 tips, and full one-fifth of the length of the body : the wings are colourless and very 

 much longer than the body ; the squamulae are yellow ; the stigmata and the veins 

 are brown. 



Aphis secunda. 



The winged viviparous female. — The body is black, shining, and of moderate size : 

 the antennae are very much longer than the body : the rostrum is yellow, with a black 

 tip : the tubes are as long as one-fourth of the body : the legs are yellow and rather 

 long ; the four hinder thighs excepting the base, the tips of the fore thighs, the tarsi 

 and the tips of the tibiae, are black : the wings are colourless and very much longer 

 than the body ; the wing-ribs and the rib-veins are yellow ; the brands are pale 

 brown : the veins are brown. 



Aphides on the Spotted Persicaria (Polygonum Persicaria). 

 Aphis transiens. 



The wingless viviparous female. — The body is small, short, plump, dull, velvet-like, 

 yellowish green : the antennae are pale yellow, darker towards the tips, and much 

 shorter than the body : the tubes are short : the legs are green and rather short ; the 

 tarsi are darker. 



In the beginning of July. 



Aphides on the Vegetable Marrow. 



Aphis illata. 



The wingless viviparous female. — The body is small, oval, smooth, rather flat, not 

 shining, whitish green : there are three vivid green stripes on the back : the antennae 

 are greenish white, shorter than the body ; the tips of the latter joints are darker: the 

 eyes are red: the rostrum is pale green, with a black tip : the tubes are pale green, 

 with darker tips, and as long as one-eighth of the body : the legs also are pale green 

 and moderately long ; the feet are yellow, with darker tips. 



Aphides on the Dock (Rumex). 



Aphis relata. 



The wingless viviparous female. — The body is short, elliptical, rather flat, light 

 yellowish green : the antennae are pale yellow, with brown tips, and not half the length 

 of the body : the eyes are brown : the mouth and the nectaries are pale yellow, with 

 brown tips, and the latter are hardly more than one-twelfth of the length of the body : 

 the legs are pale yellow and moderately long; the feet and the tips of the shanks are 

 brown. 



