54 Indian Museum Notes, [Vol. IV. 



Aphis rapse, also A. floris rapse and duhia (?), Curt. 



vastafor, Smee. 



persicascola, Boisduval, 



Rhopalosiphum dianthi, Koch. 

 — persicw, Pass. 



" Apterous viviparous female. 



Inch. Millimetres. 



Size of body . . • o'oSo x 0*040 202 x I'OI 



Length of antennae , . o'o6o i'52 



„ cornicles • . o'o20 0*50 



" Colour shining green, ochreous-yellow, or brownishyellowr. 

 Skin finely punctured. Ovate pointed towards the apex. Head 

 broad. Antennae shorter than body, and placed on rather large 

 frontal tubercles. Cornicles green, with black tips. Cauda green, 

 about one-third the length of cornicles. Abdomen convex, and be- 

 ing transparent, often seen mottled with yellow young embryos. 



The colour is, however, exceedingly variable. In autumn it is 

 often of an ochreous red, and deeply furrowed or wrinkled. 



"Pupa. 



** Much like the larva. Wing-cases tipped with brown. Points 

 of antennae brown. 



*' Winged 



viviparous 



female. 













Inch. 



Millimetres. 



Expanse of wing 



• 





• 



0-340 



7*62 



Size of body • 



9 





• 



o'oSo X 0*040 



202 X I'OI 



Length of antennae , 



. 





. 



o"o8o 



2"02 



„ cornicles 



• 





• 



o'oi7 



0*19 



" Head, thorax, and the band on prothorax black. Abdomen shin- 

 ing reddish yellow, with a broad black dorsal spot, and several dark 

 lines. Four dark spots on each lateral fold. Legs ochreous. An- 

 tennae black ; as also are the femora, the tibial points, and tarsi. Cor- 

 nicles brown. Wing-insertions and cubitus yellow. Stigma grey. 

 Rostrum reaches to the second coxae. 



** Very common throughout the summer up to the end of October, 

 The imago appears of various colours, such as green, ochreous, and 

 even black. 



" The larva may be called almost polyphagous. Walker says that 

 it feeds on at least sixty known plants. Amongst those to which it 

 is most destructive are the potato, the sweet turnip, and the swede j 



