LIST OF HGMOPTEROUS INSECTS. 951 



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 — e. Scotland. Presented by E. Doubleday, Esq. 

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

 lection. 



22. Aphis Acebicola. 



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 quadkitubercu lata. 



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

 For st. Ins. iii. 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. Pflan. i. 116, 90. Walk. Ann. Nat. 



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

 Lachnus punctatus, Burnt. Handb. Ent. ii. 93, 5. 



a — h. England. (Tn 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. iii. 50, 11. 

 Fabr. Sp. Ins. ii. 389, 41. Mant. Ins. ii. 317, 46. Ent. Syst. 

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

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

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

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

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

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

 x, 176, 16. Kalt. Mon. Pflan. i. 131, 100. Ratz. Forst. Ins. iii. 

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



