190 
BEiTISH APHIDES. 
is all green except the thorax, head, and a black anal 
patch. The figure of this Aphis is unusual and some- 
what clumsy. It has the habit of dropping from the 
leaves at the approach of danger, and thus it is not 
easy to secure. 
Specimens were sent to me from Keteringham, some 
few miles distant from Norwich. Mr, Barrett found 
them during two successive Septembers feeding on the 
green-seed pods of the vetch, Vicia senium. 
This insect has not been before described. It cer- 
tainly is neither Siflionopliora vicice^ Koch, nor AjpMs 
vicicB of Kaltenbach. It has the mixed characters of 
Sijphonojphora and B]iopalosi])}ium^ and this justifies, 
perhaps, the construction of a new genus, notwith- 
standing that at present it is the only known species 
comprised in that genus. 
