LIST OF HOMOPTEKOUS INSECTS. 993 



97. Aphis Carduina. 



Aphis Carduina, Walk. Ann. Nat. Hist. Ser. 2, vi. 44, 89. 



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

 lection. 



98. Aphis Jacob^.^. 



Aphis JacobcEae, Schrank, Faun. JBoic. ii. 123, 1242. Kali. Man. 

 Pfian. i. 68, 49. Walk. Ann. Nat. Hist. Ser. 2, vi. 44, 90. 

 Zool. viii. App. civ. 



Distance between the first and second veins at the tips very 

 much more than that between them at the base ; third farther from 

 the second at the tip than it is at the base, hardly farther from the 

 second at the base than the second is from the first; first fork at the 

 tip as far from the second fork as from the third vein, nearer to the 

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

 the fourth vein as from the first fork ; fourth vein curved near the 

 base, almost straight towards the tip, a little farther from the lip of 

 the rib-vein than from the second fork. 



England. 



99. Aphis Helicheysi. 



Aphis Helichrysi, jfiTa^^ Mon. PJlan. i. 102,77. Walk. Ann. Nat. 



Hist. Ser. 2, vi. 45, 91. 

 Aphis Balsamitae.? MM. Zool. Dan. Prod. 109. 1252. Gmel. Ed. 



Syst. Nat. i. 4, 2210, 71. 

 Balsamitifex ? Amyot, Ann. Soc. Ent. Fr. 2ine Serie, v. 479. 



Distance between the first and second veins at the base about 

 half of that at the tips ; third a little farther from the second at the 

 tip than at the base, as far from the second at the base as the second 

 is from the first; first fork at the tip a little nearer to the second 

 fork than to the third vein, a little nearer to the third vein than the 

 third vein is to the second ; second fork a little nearer to the fourth 

 vein than to the first fork ; fourth vein curved, nearer to the second 

 fork than to the tip of the rib-vein. 



Var. Second fork as near to the fourth vein as to the first fork ; 

 fourth vein as near to the tip of the rib-vein as to the secoud fork. 



PART IV. 3 S 



