56 BRITISH APHIDES. 



nigra. June to Septembe/. It likewise attacks the 

 melon plants in my forcing frames, and much weakens 

 the plants. From similar places at Carshalton I have 

 also received specimens. 



The synonymy is somewhat difficult. The insect is 

 not unlike A. urticaria, but the nectaries are different. 

 The larvEe do not possess the spots down each side, as 

 Koch describes his A. centaurea (which he says is 

 A. scahiosce, of Kalt.), as having. It better agrees with 

 Passerini's insect. Also it might prove to be A. chloris, 

 of Koch, notwithstanding that his insect quite close to 

 the ground feeds on KijiJericmn perforatum. 



Aphis cucuebiti, Buckton. Plate LIV, figs. 1,2. 



Apterous viviparous female. 



Bright green, more or less covered with a mealy 

 powder ; some specimens are more brilliantly coloured 

 than others. The cornicles are short. The rest of 

 insect like the pupa. 



Pujm. 



Orange or warm ochreous. Long oval. Head, 

 thorax, tips of cornicles, and lower part of the abdo- 

 men bright dark green. Antennee and legs pale green. 

 Cauda obtuse and pale. Eyes brown. Wing-cases 

 ashy, tipped with brown. Abdomen ringed. 



Winged viviparous female. 



