Mr. F. Walker’s Descriptions of Aphides. 277 
black tips, and as long as the body : the mouth is white ; its tip 
and the eyes are black: the nectaries are also black, and as long 
as one-fifth of the body: the legs are white ; the feet and the tips 
of the shanks are black. 
12th var. Dull green, plump, and nearly elliptic: the feelers 
are white with brown tips, and longer than the body: the eyes 
are black: the mouth is white with a brown tip : the nectaries 
are black, and as long as one-fifth of the body: the legs are dull 
white ; the knees and the tips of the shanks are black. 
13th var. Dull green, oval, mottled with red at the tip of the 
abdomen: the feelers are pale brown, and nearly white towards 
the base: the mouth is dull green with a brown tip ; the nectaries 
are brown, and as long as one-fifth of the body ; the feet and the 
tips of the thighs and of the shanks are also brown. 
14th var. Dull green, oval, more or less tinged with red, and 
eovered with a white powder, or mottled with red and green, or 
all red, or varied with black; there is a row of black spots on 
each side of the body: the feelers are black, pale yellow towards 
the base, and nearly as long as the body: the mouth is pale 
yellow; its tip and the eyes are black: the nectaries are pale 
yellow with black tips, and nearly one-fourth of the length of 
the body: the legs are yellow; the feet, the knees, and the tips 
of the shanks are black. On the mountain-ash. 
The viviparous winged female. While a pupa it resembles the 
wingless female, but it is rather narrower, and its rudimentary 
wings are whitish ; these organs are unfolded in May, and the 
insect is then black and shining: the fore-chest is red, which 
colour also prevails on the base and the underside of the abdo- 
men: the feelers are shorter than the body: the mouth is pale 
yellow with a black tip: the nectaries are as long as one-sixth 
of the body : the legs are pale yellow ; the thighs except the base, 
the feet and the tips of the shanks, are black: the wings are 
colourless, and longer than the body; the wing-ribs are pale 
yellow ; the veins and the wing-brands are dull yellow; the 
second fork is very long. 
1st var. The fore-border and the hind-border of the fore-chest 
are green: the abdomen is dull yellowish green ; its disc is black, 
and there is a row of black spots on each side: the wing- brands 
and the vems are brown. On the mountain-ash. 
This species feeds on Crataegus oxyacantha, Pyrus malus, Sor- 
bus aucuparia and S. domestica ; it appeared in thick clusters on 
this last tree near London in the summer of 1847, and gave the 
leaves autumnal red and yellow tints, and great numbers of 
humble-bees (Bombz) came to feed on its honey. 
The oviparous wingless female. This appears at the end of Oc- 
tober; it is oval, yellow, and rather flat, and has a distinct rim 
° 
