972 LIST OF HOMOPTEEOUS INSECTS. 



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

 second at the base as the second is from the first ; first fork a little 

 nearer to the second fork at the tip than it is to the third vein, and 

 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 near the base, slraij^ht towards the tip, farther from 

 the tip of the rib-vein than from the second fork. 



Var. Second fork nearer to the fourth vein than to the first 

 fork; fourth vein nearer to the tip of the rib-vein than to the 

 second fork. 



Var. Second fork wanting. 



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

 tion. 



65. Aphis Avenge. 



Aphis Avenae, Fabr. Sp. InsAi. 386, 17. Si/st. Ent. 736, 15. Mant. 



Ins. ii. 316, 22. Ent. Sijst. iv. 214, 22. Syst, Rhyn. 297, 21. 



Schrankj Faun. Boic. ii. 1, 104. Gmel. Ed. Syst. Nat. i. 4, 



2206, 52. Villers, Ins. 551, 50. Stew. EL Nat. Hist, ii 110. 



Turt. Syst. Nat. ii. 705. Macquart, Ann. Sci. Nat. 1831, 



468. Kalt. Mon. Pfian.i. 108,6. Walk. Ann. Nat. Hist. 



Ser. 2, iii. 45, 57. Hardy, North British Agriculturist, ii. 596. 

 Aphis granaria, Kirby, Linn. Trans, iv. 238. Curtis, lourn. Roy. 



Agric. Soc. vi. 

 Aphis Hordei, Kyber, Germ. Mag. Zeit. ii. 

 Aphis cerealis, Kalt. Mon. PJian. \. 16, 6. 

 Bromajjh's, Amyot, Ann. Soc. Ent. Fr. 2me Serie, v. 479. 



Distance between the first and second veins at the base less than 

 half that between them at the tips ; third farther from the second at 

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

 second is to the first; first fork nearer to the second fork than to the 

 third vein, 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 much curved near the base, almost straight towards the 

 tip, very much nearer to the second fork than to the tip of the rib- 

 vein. 



Var. Seventh joint of the feelers a little shorter than the third. 



a — 0. England. (In Canada Balsam). From Mr. Walker's collec- 

 tion. 



