38 BRITISH APHIDES. 



thoracic disc brown. " A row of black dots runs down 

 each side of the abdomen." — Walker. 



Aphis subterranea, Walk. Plate XLVII, fig. 5. 

 Aphis carotce^ Koch, Pass. 

 Apterous vivipm'ous female. 



Globose. Head broad, front slightly convex or 

 nearly flat. Dull green. Body lightly covered with 

 a meal-like powder. Usually there is an obscure 

 whitish line down the dorsum. Abdomen much 

 domed and carinated. Tips of the antennae, the 

 nectaries, and the tibia, black, as also are the eyes and 

 the tarsi. The nectaries are very small. The tail 

 rather inconspicuous. The rostrum rather long, and 

 reaches a little beyond the third coxse. 



Found in the middle of September at Norwich, 

 feeding numerously on the roots of the garden pink, 

 Dianthus plumarius. 



I have no doubt that this is the same insect as that 

 described by^och under the name of Aphis carotce, 

 and also so called by Passerini. The former author 

 found it, however, under the umbels of the flowers of 

 the wild carrot, Daucus carota, but he omits to describe 

 the winged female, although he apparently found it in 

 company with the rest. I have never seen the winged 

 form alive, but I find the insect described in Walker's 

 ' Catalogue of the Homoptera,' vol. iv, p. 1033, under 

 the name of Aphis subterranea, from which notice I 

 collate the following ; 



