MOLLUSCS 



I. PULMONATA {cont.) 

 a. Stylommatophora {cont.) 



Ena obscura (Mali.). Not common : locally 



and widely distributed 

 Cochlicopa luhrica (Mull.). Common 

 Azeca tridens (Pult.). Friston ; plentiful in 



the Mendlesham district ; Wickham 



Skeith ; Thwaite 

 CaeciUoides [= Caecilianella] acicula (MolL). 



Mendlesham; Aldeburgh; Ipswich; Old 



Newton ; Ixworth Thorpe 

 "Jaminia [ = Pupd\ cyl'tndracea'\ Local, but 



(DaC). [ widely dis- 



— muscorum (Linn.). ) tributed 



— triplkata (Stud.). Brandon ; Barton Mills 

 Fertigo minutissima (Hartm.). One specimen 



on the wall of Burgh Castle, Gt. Yar- 

 mouth 



— antivertigo (Drap.). Rare : near Lake 



Lothing ; Lowestoft ; Brandon; Milden- 

 hall; Needham Market; Knettishall 



— substriata (Jeff.). Thornham ; Hopton 



— pyg^oea (Drap.). Haughley; Tudden- 



ham ; Herringswell ; Lowestoft ; Men- 

 dlesham ; Wetheringsett 



— Moulimiana (Dupuy). Rejectamenta of 



Little Ouse at Knettishall 



— /i«j/7/a. Mull. Near Woodbridge; Thwaite 



— angustior, Jeff. Aldeburgh 



Balea perversa (Linn.). Rare : Walsham-le- 

 Willows ; Mendlesham ; Wickham 

 Skeith 



Clausilia laminata (Mont.). Rare : Haughley ; 

 Hitcham ; Mendlesham 



— bidentata (Strom). Common : a white 



variety was also found at Gislingham 

 Succinea putris (Linn.). 



— e/eganSy Risso, 



Fairly common 



b. Basommatophora 



Carychium minimum, MuU. Very common 



Phytia [= Alexia] myosotis (Drap.). Coast 

 from Dunwich to Southwold 



Ancylus Jiuviatilis, Miill. Rare : Brandon; 

 Mildenhall ; Bramford ; Needham Market 



Acroloxus [ = Felletia'] lacustris (Linn.), Rare : 

 Gt. Fakenham ; Knettishall (dead 

 shells); Sudbury; Mendlesham; Ips- 

 wich 



Limnaea auricularia (Linn.). Local 



— pereger (Mull.). Common everywhere 



— palustris (MulL). Local 



— truncatula (Moll.). Fairly common 



I. PULMONATA {cont.) 

 b. Basommatophora {cont.) 



Limnaea stagnalis (Linn.). Common 



— g/abra (Mull.). ' Suffolk ' (Leach) 

 Amphipeplea glutinosa (Mull.). Mildenhall ; 



two specimens at Needham Market 

 Planorbis corneus (Linn.). ] Local, but widely 



— a/bus, (Mall.). J distributed 



— crista [ = nauti/eus'] (Linn,). Rare : Men- 



dlesham 



— carinatus, Mall. 



Local, but 

 widely 

 d i s t r i- 

 buted 



Very local, but widely 



— umhilicatus, Mull. [ 



ginatus, Drap.]. 



— vortex (Linn.). 



— spirorbis (Linn.). 



— contortus (Linn.). 



— fontanus (Lightf.). 



distributed 



Segmentina nitida (MuU.) [= Planorbis lineatus 

 (Walker)]. Rare : Mildenhall ; Need- 

 ham Market 



Physa fontinalis (Linn.). Local, but widely 

 distributed 



Aplecta [ = Physa] hypnorum (Linn.). More 

 local, but also widely distributed 



IL PROSOBRANCHIA 



Paludestrina confusa (Frau.). Oulton Broad ; 

 Blythburgh 



— Jenkinsi (Smith). Oulton Broad ; Wal- 



berswick ; Aldeburgh ; River Orwell 



— ventrosa {M.on\.^. Aldeburgh; Southwold; 



Woodbridge; Lowestoft; Breydon 



— stagnalis (Bast.). Woodbridge and estu- 



aries all down the coast 

 Bithynia tentaculata (Linn.). Common 



— Leachii (Shepp.). Local, but widely dis- 



tributed 

 Vivipara vivipara (Linn.). Near Oulton 

 Broad ; Ipswich ; Bramford 



— contecta (Millet). Oulton Broad; several 



localities in West Suffolk 

 Valvata piscinalis (Mull.). Widely distributed 



— cristata, Mall. Very common 

 Assemania Grayana, Leach. Blythburgh ; 



Aldeburgh; River Orwell 



Pomatias elegans (Mall.). Lavenham ; Sud- 

 bury ; Bramford 



Acicula lineata (Drap.). IpswiCh ; Sudbury ; 

 Oulton 



Neritina fiuviatilis (Linn.). Rare : Brandon; 

 Mildenhall; Bramford 



99 



