xlviii Mr. F. Walkers 



rostrum is dull yellow ; its tip and the eyes are black : the tubes are dark yellow and 

 hardly one-tenth of the length of the body : the legs are pale yellow and rather short : 

 the knees, the tarsi and the tips of the tibiae are darker. 



Aphis impacta. 



The winged viviparous female. — The body is black : the abdomen is yellowish 

 brown ; its disk is mostly black, and it has a row of black spots on each side : the 

 antenna) are black and longer than the body; the base of the third joint is yellow : 

 the rostrum is dull yellow, with a black tip : the tubes are also dull yellow and rather 

 more than one-sixth of the length of the body : the legs are yellow and rather long ; 

 the thighs from the middle to the tips, the tarsi and the tips of the tibiae are black : 

 the wings are colourless ; the squamulse and the costal veins are pale yellow ; the 

 stigmata and the other veins are pale brown. 



Found, with the preceding species, in the middle of September, near Newcastle, 

 by Mr. Hardy. 



Aphis exul. 



The wingless viviparous female. — When very young the body is pale velvet-like 

 green ; their limbs are still paler : during its growth it acquires a yellow, and after- 

 wards a red tint, varied with pale dull yellow. 



The winged viviparous female. — The body is deep velvet-like black and rather 

 small : the borders and the under-side ot the prothorax and the abdomen are dark 

 green : the antennae are black and shorter than the body : the rostrum is dull green, 

 with a black tip : the tubes are black and as long as one-sixth of the body : the legs 

 are dull yellow ; the four hinder thighs excepting the base, the knees, the tarsi and 

 the tips of the shanks are black : the wings have a slight gray tinge ; the squamulae 

 are dull green ; the stigmata and the veins are brown. 



Abundant in the middle of September, near Lancaster : one winged female sta- 

 tioned by a cluster of the young ones above mentioned. 



Aphis advena. 



The body is small and black : the borders and the under-side of the prothorax 

 are dull yellow : the abdomen is dull orange : the antenna? are black, thick till near 

 their tips, and shorter than the body : the rostrum is dull yellow, with a black tip: 

 the tubes are black and as long as one-sixth of the body : the legs are yellow ; the 

 tarsi, the tips of the thighs and of the tibia?, and nearly the whole of the hind thighs, 

 are black : the wings are colourless ; the squamulae are pale yellow ; the stigmata and 

 the veins are brown 



End of November. 



Aphides on the Red Hemp-Nettle (Galeopsis Ladanum). 



Aphis qilerens. 



The winged viviparous female. — While a pupa the body is elliptical and bright 

 yellow: there is a row of green spots along the middle of the abdomen, and two or 



