LIST OF HOMOPTEROUS INSECTS. 917 



24. PSYLLA PYEICOLA. 



Psvlla pyricola, Foerster, Psyll. Verh. Nat. Ver. Preuss. Rheinl. 1848, 

 3, 77, 25. 



Germany. 



25. PsYLLA APIOPHILA. 



Psylla 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, Linn Si/st. Nat. ii. 739, 14. Faun. Suec. 1012. 



Fabr. Sp. Ins. ii. 392, 14. Mant. Ins. ii. 318, 14. E7it. Syst. 



iv. 223, 14. Si/st. Rhyn. 305, 14. Gmel. Ed. Si/st. 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, Foerster, 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. 



28. Psylla fkeruginea. 



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. 



