126 The Mollusca of Cambridgeshire 



Planorbis (BathyompJialus) contortus (Linn.) (3) 

 Planorbis (Hippeutis) fontanus (Lightf.) [ = niti<iux 



Miiller of Jeffreys] (3) 



Segmentina nitida (Miill.) [-lineata Walker] (3) 

 PHYSIDAE 



Physa fontinalis (Linn.) (3) (5) 

 Aplecta hypnorum (Linn.) (3) 

 STYLOMMATOPHORA 

 TESTACELLIDAE 



Testacella haliotidea, Drap. 



LIMACIDAE 



Limax (Heynemannia) maaimus, Linn. 

 Limax (Lehmannia) flavus, Linn. 

 Agriolimax agrestis (Linn.) (3) 

 Agriolimax laevis (Miill.) (3) 

 Milax sowerbyi (Fdr.) 

 Milax gagates (Drap.) 



ZONITIDAE 



Vitrina pellucida (Miill.) 

 Vitrea crystallina (Miill.) (3) 



Vitrea (Poltta) lucida (Drap.) [ = draparnaldi Beck] 

 Vitrea (Polita) cellaria (Miill.) (3) 

 Vitrea (Polita) rogersi, B. B. Woodward \_=glabra 

 Auctt. & helvetica Auctt.] 



Vitrea (Polita) alliaria (Miller) 

 Vitrea (Polita) nitidula (Drap.) (3) 

 Vitrea (Polita) pur a (Aid.) 

 Vitrea (Polita} radiatula (Aid.) (3) 

 Zonitoides nitidus (Miill.) (3) 

 Zonitoides excavatus (Bean) 

 Euconulm fulvus (Miill.) (3) 



ARIONIDAE 



Arion ater (Linn.) 



Arlon inter medius, Normand [= minimus Simroth] 



Arion hortensis, F^r. 



Arion fastiatus, Nilsson [=bourguignati Mabille] 



