LIST OF HOMOPTEROUS INSECTS. 961 



its length, nearly straight from thence to the tip, which is much 

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



a — <?. Scotland. Presented by E. Doubleday, Esq. 

 f—ww. England. (In Canada Balsam). From Mr. Walker's col- 

 lection. 



22. Aphis Acericola. 



Aphis Acericola, Walk. Ann. Nat. Hist. Ser. 2, i. 451, 22. 



a. England. Presented by F. Walker, Esq. 



b. Interlacken, Switzerland. Presented by F. Walker, Esq. 



23. Aphis QUADRITUBERCULATA. 



Aphis quadrituberculata, Kalt. Mon. PJlan. i. 134, 102. Ratz. 

 Forst. Ins. ui. 218,19. 



a — c. England. Presented by F. Walker, Esq. 



Group 12. Walk. Ann. Nat. Hist. Ser. 2, i. 451. 



24. Aphis Populea. 



Aphis Populea, Kalt. Mon. PJlan. i. 116, 90. Walk. Ann. Nat. 



Hist. Ser. 2, 1, 451, 23. 

 Lachnus punctatus, Burm. Handh. Ent. ii. 93, 5. 



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

 tion. 



25. Aphis Salicis. 



Aphis Salicis, Linn. Syst. Nat. ii. 736, 26. Faun. Suec. 995. 

 Reaum. Ins. iii. 281—350, pi. 22, f. 2. Deg. Ins. iW. bO, 11. 

 Fahr. Sp. Ins. ii. 389, 41. Mant. Ins. ii. 317, 46. Mit. Syst. 

 iv. 219, 47. Syst. Rhyn. 301, 47. Gmel Ed. Syst. Nat. i. 

 2207, 2210, 26. Rossi, Faun. Etrusc. 264, 1398. Schrank, 

 Faun. Boic. ii. 1, 102, 1176. Berk. Syn. i. 120. Steiv. El. Nat. 

 Hist. ii. 111. Turt. Syst. Nat. ii. 707. Shaw, Gen. Zool. vi. 

 170. W.Curtis, Linn. Trans, vi. 75, 94, pL 5, f. 1,2. St. 

 Farg. et Serv. Enc. Meth. x. 247, Fonscol. Ann. Soc. Ent. Fr. 

 X, 176, 16. Kalt. Mon. Pfan. i. 131, 100. Ratz. Forst. Ins. iii. 

 218, 18. Walk. Ann. Nat. Hist. Ser. 2, i. 452, 24. 



