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. 



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



14. Psylla insignis. 



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

 1848,3,75,17. 



Prussia. 



17. Psylla spaetiophila. 



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

 1848,3,75, 18. 



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



18. Psylla Crat.egi. 



Cherraes CratEegi, 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 Crataegi, Foerster, Psyll. Verh. Nat. Ver. Preuss. Rheinl 



1848, 3, 75, 19. 



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



