298 Mr. F. Walker's Descriptions 0/ Aphides. 



of small black spots on each side : the feelers are black, and 

 nearly as long as the body : the mouth is pale yellow ; its tip 

 and the eyes are black : the nectaries are spindle-shaped, dull 

 yellow, darker towards the base and at the tips, and hardly 

 one- fifth of the length of the body : the legs are pale yellow ; 

 the hind-thighs, excepting the base, the feet, and the tips of 

 the other thighs and of the shanks, are black : the wing-ribs, the 

 rib-veins, and the wing-brands are pale yellow; the other veins 

 are pale brown. This, like its predecessor, the wingless female, 

 almost disappears during some part of the summer and the au- 

 tumn, but a solitary little individual may still be seen here and 

 there beneath the leaves. 



The oviparous wingless female. This lives in October and in 

 the beginning of November, when it lays its eggs on the shoots 

 of the currant : it is elliptical, olive-green, mottled with pale yel- 

 low : there is a large green spot on each side of the abdomen by 

 the nectaries : the feelers are yellow, black towards the tips, and 

 longer than the body : the mouth is pale yellow ; its tip and the 

 eyes are black : the nectaries are pale yellow with black tips, 

 and as long as one- fourth of the body : the legs are pale yellow ; 

 the knees, the feet, and the tips of the shanks are black ; the 

 hind-shanks are shaded with pale brown. 



1st var. Yellowish green. 



2nd var. Yellowish white. 



3rd var. A black band round the middle of each hind-shank. 



The winged male. It pairs with the oviparous female before the 

 end of October. The head and the chest are black : the abdo- 

 men is dull yellow, with a few short slight bands across its back : 

 the feelers are rather thick till near their tips, and almost as long 

 as the body : the mouth is yellow with a black tip : the nectaries 

 are black, and as long as one- sixth of the body : the legs are yel- 

 low ; the hind-thighs, the feet, and the tips of the other thighs 

 and of the shanks are black : the wing-ribs are yellow ; the wing- 

 brands and the veins are brown. 



1st var. The fore-chest beneath its borders above, and the ab- 

 domen are dull greenish yellow; the latter has a row of black 

 dots on each side : the nectaries are as long as one-eighth of the 

 body : the hind-thighs are pale yellow towards the base. 



62. Aphis Galeopsidisy Kaltenbach. 



Aphis Galeopsidis, Kalt. Mon. Pflan. i. 35. 23. 



This is a very elegant insect : it is hairy like A. Avellance and 

 A. tetrarhoda, but in other characters it differs widely from these 

 two species. It feeds from February to October on Galeopsis 

 tetrahit, G. bifida, Lamium album, L.purpureum, L. amplexicaule, 

 Polygonum Persicaria, P. lapathifolium, P. hydropiper, P. laxi- 



