998 LIST OF HOMOPTEROUS INSECTS. 



107. Aphis Prunina. 



Aphis Prunina, Walk. Ann. Nat. Hist. Ser. 2, vi. 120, 99. Zool. vi. 



2250. 

 Aphis ? Walk. Zool. vi. 2250. 



Distance between the first and second veins at the tips full 

 twice that between them at the base; third a little nearer to the se- 

 cond at the base than at the tip, a little nearer to the second at the 

 base than the second is to the first ; first fork generally a little nearer 

 to the second fork than to the third vein, most often a little nearer 

 to the third vein than the third is to the second ; second fork as near 

 to the fourth vein as to the first fork ; fourth vein much curved, a 

 little nearer to the second fork than to the tip of the rib-vein. 



a — p. England. (In Canada Balsam). From Mr. Walker's collec- 

 tion. 



108. Aphis Prunaria. 



Aphis Prunaria, Walk. Ann. Nat. Hist. Ser. 2, vi. 121, 100. Zool. 



vi. 2250. 

 Aphis spinarum ? Hartig, Germ. Ent. Zeit. iii. 370, 13. 



Distance between the first and second veins at the tips about 

 thrice that between them at the base ; third very much farther from 

 the second at the tip than at the base, as near to the second at the 

 base as the second is to the first ; first fork generally nearer to the 

 second fork than to the third vein, much nearer to the third vein 

 than the third is to the second ; second fork about as far from the 

 fourth vein as from the first fork; fourth vein long, slightly curved, 

 almost straight towards the tip, much nearer to the second fork than 

 to the tip of the rib-vein. 



. England. (In Canada Balsam). From Mr. Walker's collec- 

 tion. 



109. Aphis Potentilue. 



Aphis Potentilla!, Walk. Ann. Nat. Hist. Ser. 2, iv. 122, 101. 

 England. 



