FOUND IN THE ENVIRONS OF LONDON 127 



PALUDINA MARSH-SHELL. 



118. Paludina vivipara, Viviparous Marsh-shell Thames, Croy- 



don Canal, New River, &c. (J. C-) 

 (T.B.) (I). C.) 



119. Paludina achatina, Agate, Marsh-shell. New River, (T.B.) 



120. Paludina impura, Covered Marsh-shell. Hammersmith, 



Croydon Canal, Greenwich marshes, 

 (J. C. (D. C.) 



NERITINA FRESH- WA TER-NERITE. 



124. Neritina fluviatilis, River Ner it ine. In the Thames and 

 Lea abundantly, (J. C.) (T. B.) (D. C.) 



ANCYLUS ERESH-WATER PATELLA. 



125. Ancylus fluviatilis, River Patella. In the Thames, (T.B.) 



126. Ancylus lacustris, Lake Patella. In the Lea River, (T.B.) 



SHELLS NOT MENTIONED IN DR. TURTON'S 

 MANUAL. 



Pupa cinerea. Rejectamenta of the Thames at Battersea, 



(Linn. Trans.) 



Pupa palustris. At Wimbledon, (J. E. Gray, 1818 ) 

 Mytilus ? Croydon Canal, (D. C.) 

 Mytilus polymorphus. London Docks, 



(London s Mag. Nut. Hist.) 



Limneuselegans.In Croydon Canal, (Collection Brit. Mus.) 

 Limneus Grayanus. Greenwich marshes, (Linn. Trans, vol.xvi.) 

 Paludina. New species found at Battersea by Mr. Thomas Bell. 



