>rAYFIEI.r) : I'HE NON-MARIXP MOLLUSCA OF SUFFOLK. 281 



var. albida Jeff. Ipswich (A.M.). 



var. tumida Marsliall. Ipswicli (A.M.). 



Bithynia tentaculata (L.). Common. 



E.— Campsey Ash, Blythburgh, Wenhaston (A.S K.), Blaxhall, 

 Farnham, Leiston (G.T.R.), Tattingstone (CM.). 



W.— Cockfield, IckUngham (C.B.), Bury St. Edmunds (A.M.). 

 var. producta Menke. 



E.— Blaxhall (G.T.R.). W.— Knettishall (A.M.). 

 var. zonata Baudon. 



E.— Blaxhall (G.T.R.). W.— Knettishall (A.M.). 

 var. marginata West. E.— Blaxhall (G.T.R.). 

 B. leachii (Sheppard). — Moderately common. 



E.— Campsey Ash, Blythburgh, Wenhaston (A.S.K.), Blaxhall, 

 Dunningworth (G.T.R.), Tattingstone (CM.), Campsey Mere, Hol- 

 brook (Sheppard), Bramford, Ipswich (A.M.). 

 W. — Icklingham, Barton Mere (C.B.). 

 Vivipara vivipara (L.). — Not common. 



E.— Leiston (G.T.R.). *W.— Sudbury, Icklingham (CB.). 

 V. COntecta (Millet). — Moderately common. 



E. — Leiston, Minsmere, Theberton, Mendham (G.T.R.), Felix- 

 stow^e (Sheppard), Needham Market, Ipswich (A.M.). 

 W.— Stratford St. Mary (G.T.R.). 

 Valvata piscinalis (MiiUer). — Moderately common. 



E. — Campsey Ash, Blythburgh, Wenhaston (A.S.K.), Blaxhall, 

 Leiston, Farnham (G.T.R.), Tattingstone (CM.), Bramford, Ipswich, 

 Felixstowe (A.M.). 



W.— Barton Mere (C.B.), Bury St. Edmunds (A.M.). 

 V. cristata MiiUer. — Moderately common. 



E. — Campsey Ash, Blythburgh, Wenhaston (A.S.K.), Blaxhall 

 (G.T.R.), Mendlesham, Stowmarket, Needham Market, Ipswich, 

 Oulton, Lowestoft (A.M.). 



W. — Barton Mere, Cockfield, Livermere (C.B.), Bury St. 

 Edmunds, Walsham-le-Willows (A.M.). 

 *Assemania grayana Leach. 



E. — Several specimens at Aldeburgh. One shell at the mouth 

 of the river Orwell (A.M.), one specimen, Blythburgh (A.S.K.). 

 Pomatias elegans (MiiUer). Rare. W. — Sudbury (King). 

 Acicula lineata (Drap.). Very rare. 



E.— Ipswich (C.B.). *\V.— Sudbury (King). 

 Neritina fluviatilis (L.). Rather rare. 

 E. — Ipswich (A.M.). 

 W.— Sudbury (King), Stratford St. Mary (G.T.R.). 



