984 LIST OF HOMOPTEBOUS INSECTS. 



at the base as the second is from the first ; first fork not half the 

 distance from the second fork that it is from the third vein, hardly 

 nearer to the third vein than the third is to the second ; second fork 

 a little farther from the fourth vein than from the first fork ; fourth 

 vein curved, straight towards the tip, about half as far from the se- 

 cond fork as from the tip of the rib- vein. 



Var. Second fork of third vein wanting. 



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

 tion. 



83. Aphis Nymph,e.e. 



Aphis Nymphseae, Linn. Syst. Nat. ii. 714, 10. Faun. Suec. 983. 



Fabr. Mant. Ins. ii. 315, 17. Ent. Syst. iv. 214, 18. Syst. 



Rhyn. 297, 18. Schrank, Faun. Boic. ii. 1, 117. Gmel. Ed. 



Syst. Nat. i. 2204, 10. M'uller, Ins. 1264. Turt. Syst. Nat. 



ii. 703. Fonscol. Ann. Soc. Ent. Fr. x. 166, 5. Kalt. Mon. 



Pfian. i. 104, 79. Walk. Ann. Nat. Hist. Ser. 2, v. 26, 75. 

 Aphis Butomi, Schrank, Faun. Boic. ii. 114, 1212. 

 Nymphaeifex, Amyot, Ann. Soc. Ent. Fr. 2me Serie, v. 478. 



Distance between the first and second veins at the base not 

 one-third of that between them at the tips ; third much 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 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 far 

 from the fourth vein as from the first fork ; fourth vein slightly 

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



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

 vein. 



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

 tion. 



84. Aphis Sambuct. 



Aphis Sambuci, Linn. Syst. Nat. ii. 734, 4. Faun. Suec. 978. 

 Bonnet, Hist. Nat. i. Frisch. Ins. ii. 14, pi. 18. Lister, Ins. 

 397, 40. Geoff. Ins. Par. i. 495, 3. Reaum. Ins. iii. 281, 



