LIST OF HOMOPTEROUS INSECTS. 915 



12. PSYLLA 



Psylla viridula, Foerster, Psyll. Verh. Nat. Ver. Preuss. Rheinl. 1848, 

 3, 74, 13. 



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



13. Psylla peregrina. 



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

 1848, 3, 74, 14. 



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



14. Psylla insignis. 



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

 1848, 3, 74, 15. 



Prussia. 



15. Psylla ambigua. 



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

 1848, 3, 74, 16. 



Prussia. 



16. Psylla melanoneura. 



Psylla melan on eura, Foerster, Psyll. Verh. Nat. Ver. Preuss. Rheinl. 

 1848,3,75,17. 



Prussia. 



17. Psylla spartiophila. 



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

 1848, 3, 75, 18. 



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



18. Psylla Crat^gi. 



Chermes Crataegi, Scopoli, Ent. Cam. 139, 412. Gmel. Ed. Syst. 



Nat. i. 4, 2214, 24. Schrank, Faun. Boic. ii. 1, 142, 1255. 



Stew. El. Nat. Hist. ii. 112. 

 Psylla Crat8es:i, Foerster, Psyll. Verh. Nat. Ver. Preuss. Rheinl 



1848, 3, 75, 19. 



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



