986 LIST OF HOMOPTEUOUS INSECTS. 



Distance between the first and second veins at the base less 

 than half that between tliem at the tips ; third much farther from 

 the second at the tip than at the base, a little farther from the se- 

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

 much nearer to the second fork at the tip than to the third vein, as 

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

 near to the fourth vein as to the first fork ; fourth vein 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. First fork a little nearer to the third vein than the third is 

 to the second. 



Vnr. Distance between the first and second veins at the base 

 less than one-third of that between them at the tips ; third a little 

 farther from the second at the tip than at the base, much farther 

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

 fork at tlie tip four times farther from the third vein than from the 

 second fork ; second fork more than twice farther from the fourth 

 vein than from the first fork. 



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

 lection. 



86. Ai'His Padi. 



Aphis Padi, Linn. Si/st. Nut. ii. 734, 8. Faun, Suec. 981 . Riawn. 



Ins. iii. pi. 23, f. 9, 10. Fabr. Sp. Ins. ii. 389, 45. Mant. Ins. 



ii. 317, 60. Ent. Sijst. iv. 220, 60. Sysl. Rhyn. 301, 60. 



Ginel. Ed. Syst. Nat. i. 2203, 8. Schrank, Faun. Boic. ii. 



115, 1216. Stciv. El. Nat. Hist. ii. 110. Turl. Syst. Nat. ii. 



708. Kalt. Mon. Pflan. i. 74, 63. Ralx. Font. Ins. iii. 217, 



«., Walk. Ann. Nat. Hist. Ser. 2, v. 274, 78. 

 Padifex, Amyot, Ann. Soc. Ent. Fr. 2me Siric, v. 477, 523. 



Distance between the first and second veins at the tips full 

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

 the second at the tip than at the base, very much farther from the 

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

 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 as near to the 

 fourth vein at to the first fork ; fourth vein long, curved near the 

 base, straight towards the tip, full twice farther n'om the tip of the 

 rib-vein tlian from the second fork. 

 a. Scotland. Presented by E. Doubleday, Esq. 

 b—zzz. England. (In Canada Balsam). From Mr. Walker's col- 

 lection. 



