— 48 



Emilia 



NOMI DEI GEIRI E DELLE SPECIE 



CP 





CU 



Distribuzione 

 ipsografica 



1> e DI a 



87 



89 



90 



91 



92 



93 



94 



Nauta Leach 



Ph. hypnorum Linn 



Planorbis Guett 



Coretus Adans 



corneus Linn 



» var. etruscus Ziegl. . . . 



Tropidiscus Stein 



umbilicatus Milli 



» var. submarginatus Jan. 



carinatus Milli. 



» var. dubius Hartm. . . . 



Gyrorbis Agass 



vortex Linn 



^ var. compressus Mich. . . . 



spirorbis Linn 



» var. Tiberi De Stef. . . 



leucostoma Meli 



Bathyomphalus Agass 



contortus Linn 



G-yraulus Agass 



albus Milli 



Armiger Hartm 



nautileus Linn 



Hippeutis Agass 



complanatus Linn 



