LIST OF HOMOPTEROUS INSECTS. 917 



24. PSYLLA PYRICOLA. 



Psvllapyricola, Foerster, Psyll. Verh. Nat. Ver. Preuss. Rheinl. 1848, 

 3, 77, 25. 



Germany. 



25. PsYLLA APIOPHILA. 



PsvUa apiophila, Foerster, Psyll. Verh. Nat. Ver. Preuss. Rheinl. 



1848,3,78,26. 



a. England. Presented by J. C. Dale, Esq. 

 6, c. Prussia. Presented by F. Walker, Esq. 



26. PsYLLA PYRISUGA. 



Psylla pyrisuga, Foerster, Psyll. Verh. Nat. Ver. Preuss. Rheinl. 

 1848, 3, 78, 27. 



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



27. Psylla Salicis. 



Chermes Salicis, Linyi Si/st. Nat. ii. 739, 14. Faun. Suec. 1012. 



Fabr. Sp. Ins. ii. 392, 14. Mant. fns. ii. 318, 14. Fnt. Syst. 



iv. 223, 14. Si/st. Rhyn. 305, 14. Gmel. Ed. Syst. Nat. i. 4, 



2213, 14. Schrank, Faun. Boic. ii. 1, 140, 1247. Stew. El. 



Nat. Hist. ii. 112. Turt. Syst. Nat. ii. 711. 

 Psylla Saliceti, Foerstei\ Psyll. Verh. Nat. Ver. Preuss. Rheinl. 



1848,3,79,28. 



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



c. Prussia. Presented by the Entomological Club. 



d. ? 



28. Psylla ferruginea. 



Psylla ferruginea, Foerster, Psyll. Verh. Nat. Ver. Preuss. Rheinl. 

 1848,3,79,29. 



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



b. Prussia. Presented by E. Doubleday, Esq. 



c. Prussia. Presented by F. Walker, Esq. 



