mayfiei.d: west-norfoi.k non-marine mollusca. 339 



L. truncatula Milller. — (i) Great Fakenham (S.), Haughley, 

 Wetherden, Wyverstone, Knettishall. (2) Lavenham, Sudbury. (4) 

 Brandon (M.), Mildenhall. 



L. Stagnalis {Linne). — (i) Great Fakenham (S.), Knettishall, 

 Walsham-le-Willows. (2) Sudbury. (4) Brandon (M.), Bury St. 

 Edmunds, Mildenhall, 



Planorbis COrneus {Linne). — (i) Great Fakenham (S.), Red- 

 grave, Knettishall. (2) Sudbury. (4) Brandon (M.), Mildenhall. 



P. albus Miilkr. — (i) Great Fakenham (S.), Knettishall (2) Sud- 

 bury, abundant. (4) Brandon (M.), Mildenhall, Barton Mills. 



P. carinatus Milller. — (i) Great Fakenham (S.), Redgrave, 

 Knettishall. (2) Lavenham, Sudbury. (4) Brandon (M), Bury St. 

 Edmunds (S.), Mildenhall, Barton Mills. 



var. disciformis Jeffreys. — Great Fakenham (S.), Knettishall. 



P. umbilicatus i^//^'//?^.— (i) Redgrave, Knettishall. (2) Laven- 

 ham, Sudbury. (4) Mildenhall, Barton Mills. 



P. vortex (Linne). — (i) Great Fakenham (S.), Redgrave, 

 Knettishall. (2) Sudbury. (4) Brandon (M.), Bury St, Edmunds (S.), 

 Lackford, Mildenhall, Barton Mills. 



P. spirorbis {Linne). — (i) Haughley, Wetherden, Westhorpe, 

 Walsham-le-Willows, Redgrave, Wyverstone. (2) Lavenham. (4) 

 Mildenhall. 



P. COntortus {Linne).- — (i) Redgrave, Knettishall. (2) Sudbury. 

 (4) Brandon (M.), Lackford. 



P. fontanus {Lightfoot). — (i) Knettishall. (2) Sudbury. (4) 

 Mildenhall. 



Segmentina nitida {Milller). — Rare. (4) Mildenhall. 



Physa fontinalis {Linne). — (1) Great Fakenham (S.), Wyver- 

 stone, Knettishall. (2) Sudbury. (4) Brandon (M.), Mildenhall. 



Aplecta hypnorum {Linne). — (i) Haughley, Wetherden, Wyver- 

 stone. (4) Tuddenham (M.). 



Bithynia tentaculata {Linne). — (i) Great Fakenham (S.), Red- 

 grave, Knettishall. (2) Milden, Sudbury. (4) Brandon (M.), 

 Lackford, Mildenhall. 



var. producta {Menke). — Great Fakenham (S.). 



B. leachi {Sheppard). — (i) Great Fakenham (S.), Knettishall, 

 abundant. (2) Sudbury. (4) Brandon (M.), Mildenhall. 



Vivipara COntecta(^////<f/). — (i) Great Fakenham (S.), Redgrave, 

 Knettishall. (2) Sudbury. (4) Mildenhall. 



Valvata piscinalis {Milller). — (i) Great Fakenham (S.), Knettis- 

 hall. (2) Sudbury. (4) Mildenhall. 



