A HISTORY OF CORNWALL 



Limnisa pereger (Mttll.) Also occurs in the 

 Scilly Isles 



palmtrh (Mttll.) 



truncatula (Mttll.) 



glabra (Mttll.) Rivulet on hill-top on 



road to Trevayler through Tremere ; 



Madron Well between Fowey and 



Love 

 Amphlpeplea g/utinosa (Mttll.) Near Fal- 



mouth 

 Planorbh albus, Mttll. 



g/aber, JefF. Penzance 



nautilfus (Linn.) 



-vortex (Linn.) Scilly Isles 



Planorbh spirorbis, Mttll. 



Physa fontinalis (Linn.) 1 ,-, , 



f T \ . ' \ Falmouth 



hypnorum (Linn.) J 



II. PROSOBRANCHIATA 

 Paludestrina ventrosa (Mont.) Land's End (?) ; 

 Scilly Isles 



stagna/is (Bast.) Hale 

 Bithynia tentaculata (Linn.) 

 Valvata piscinalis (Mttll.) 



Pomatias elegans (Mttll.) Perranporth (rare) 

 Acicula lineata (Drap.) Falmouth 

 Neritina fluviatilis (Linn.) Shell drift, St. Ive's 

 Bay 



B. PELECYPODA 



River Camel ; 



Unto margaritifer (Linn.) 



River Tamar 

 Sphterium corneum (Linn.) Scilly Isles 

 Pisidium amnicum (Mttll.) Castle Horneck 



Gate ; Falmouth 



Pisldium pusillum (Gmel.) Crantock ; Treve- 



thow Pond ; Scilly Isles 

 fontinale (Drap.) 



ADDENDA 



Since the foregoing was written and set up 

 in type some important additions have been 

 made to the fauna of the county. 



Arion intermedium, Norm., has been found 

 near Land's End ; Vallonia costata, Mttll., now 

 known to be distinct from V. pukhella, Mttll., 

 has been taken at Xruro ; Pisidium mi/ium y 

 Held. [i.e. P. gassiesianum, Dupuy] has been 

 met with near Penzance ; and P. obtusale, Pfr., 

 recorded from the Swan Pool, Falmouth ; 

 whilst from the top soil near Newquay a 



single specimen of Clausilia laminata (Mont.) 

 has been obtained. 



On St. Michael's Mount a shell of Testa- 

 cello maugei, Fr., was picked up. This is 

 not a likely place for it to have been intro- 

 duced, and in view of the fact that it has 

 lately been found in a holocene rain-wash at 

 Porlock Weir, near Minehead, in a spot too 

 remote from habitation to permit of its pre- 

 sence being accounted for by introduction, 

 this species must now be held to be indigenous 

 to the British Isles. 



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