■niK FAUNA OF I-IVERPOOL. 



GASTEROPODA PROSOBRANCHIATA. 



Family CHITONID^. 

 Genus CHITON. 

 Chiton Cinereus. 



Adhering to smooth stones in little pools at Hilbre, Caldy Blacks, along the 

 North of Wirral, New Brighton, and Egremont, at ebb tide. 



Family PATELLID^. 

 Genus PATELLA. 

 Patella Vulgata. 



Hilbre Island, tolerably plentiful. Sparingly at Woodside slip. 



Family DENTALIAD.E. 

 Genus DENTALIUM. 

 Dentalium Entalis. 



Dead, upon the North Shore and elsewhere. 



Family TROCHID^. 

 Genus TROCHUS. 

 Trochus Zizyphinus. 



Both dead and living, brought in occasionally by the Hoylake fishermen from 

 deep water off the Dee's mouth and North of Wirral. Dead, between Crosby 

 and Formby. — 3Ir. Cameron. 

 Trochus Umbilicatus. 



Once found in the dead state at Hilbre. — 3Ii: Marmtt. 

 Trochus Cinerarius. 



Caldy Blacks, Hilbre, and Hoylake shore, sparingly. Dredged rather 

 abundantly off the mouth of the Dee, and in deeper water at the North of 

 Wirral ; the shells often occupied by the living Mollusks, or more frequently 

 by Soldier Crabs. New Brighton shore. 



Family PALUDINID^. 

 Genus PALUDINA. 

 Paludina Listeri. 



Moss ditches, Southport. 

 Paludina Vivipara. 



In the canal from EUesmere to Chester, near Mollington Bridge. — Mr. 

 Cameron. 



Genus BITHINIA. 

 Bithinia Tentaculata. 



In pits all about the district, and in most of the slow running streams, 

 generally and abundantly distributed. 



Genus VALVATA. 

 Valvata Piscinalis. 



In ponds, streams, and ditches. Common. 

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