NON-MARINE MOLLUSCA 



Hygromia granukta (Aid.) 



— h'upida (Linn.) 



— revelata (Fdr.). Axminster ; Torquay; Tor- 



cross ; Plymouth 



— rufescens (Penn.) 



Acanthinula aculeala (MUlL). Exeter ; Kings- 

 bridge ; Plymouth ; near Ilfracombe 



Valloma pukhella (Mull.). Exeter ; Torcross 

 Plymouth ; Ilfracombe 



Helicigona lapkida (Linn.). Newton Abbot 

 Goodrington Sands ; Ashburton ; Lynton 



— arbustorum (Linn.). Exeter ; Newton Abbot 



Barnstaple 

 Helix aspersa. Mull. 



— nemoralis, Linn. 



— hortens'ts. Mull. 



Buhminus montanus (Drap.). Axminster ; Ply- 

 mouth 



— obscurus (Mull.) 

 Cochlicopa luhrica (MuU.) 



Azica tridens (Pult.). Tawstock Woods, near 



Barnstaple 

 CaclRanella acicula (MuU.). Torquay ; Ilfracombe 



[Guide] 

 Pupa secale, Drap. Axminster 



— cyRndracea (Da C.) 



— muscorum (Linn.). Plymouth ; Ilfracombe 

 Sphyradium edentulum (Drap.). Haldon Woods ; 



Plymouth 

 Fertiga antiverligo (Drap.). Plymouth [Bellamy] 



— substriata (JefF.). ' Devon ' [Jeffreys] 



— pygmaa (Drap.). Bovisand, near Plymouth ; 



Braunton Burrows, near Barnstaple 



— moulinsiana (Dup.). Braunton Burrows 



— pusilla. Mull. ' Devon ' [Jeffreys] 

 Balea perversa (Linn.) 



Clausilia kminata (Mont.). Sidmouth ; Torquay ; 

 Ilfracombe 



— bidentata (Strflm.) 



— rolphii. Gray. Newton Abbot 

 Sttccinea putris (Linn.) 



— elegans, Risso. Exeter 



Succinea oblonga, Drap. Braunton Burrows, near 

 Barnstaple, including one white specimen 



b, Basommatophora 

 Carychium minimum, MuU. 



Melampus denticulaCus (Mont.). Ilfracombe [Guide'] 

 Alexia myosotis (Drap.). Exmouth Warren ; Tor- 

 bay 

 Leuconia bidentata (Mont.) 

 Ancylus Jluviatilis, MuU. 

 Velletia lacustris (Linn.). Exminster marshes 

 Limrtiea auricularia (Linn.) 



— pereger (Mull.) 



— palustris (Mull.) 



— truncatula (MuU.) 

 Planorbis albus, Mull. 



— glaber, Jeff. South Devon 



— nautileus (Linn.) Exeter canal ; Exminster 



marshes 



— carinatus, MUll. Near Exeter 



— marffnatus, Drap. 



— vortex (Linn.) 



— spirorbis, MuU. 



— contortus (Linn.) 



— fontanus (Lightf.). Exminster marshes 

 Physafintinalis (Linn.) 



— hypnorum (Linn.) 



II. PROSOBRANCHIA 



Paludestrina jenkinsi (Smith). Topsham ; River 

 Yeo, near Barnstaple 



— ventrosa (Mont.). Plymouth [Bellamy] 



— stagnalis (Bast.). Occurs round the coast 

 Bithynia tentaculata (Linn.) 



Vivipara vivipara (Linn.) 



— contecta, (Millett) 

 Valvata piscinalis (MUll.) 



— ciistata, Mull. Topsham 

 Pomatias elegans (MuU.) 

 Acicula lineata (Drap.). Exeter 

 Neritina Jiuviatilis (Linn.). South Devon 



t Exeter 



B. PELECYPODA 



Dreissensia polymorpha (Pall.). Exeter canal, near 



Topsham 

 Uniopictorum (Linn.). South Devon 



— margaritifer (Linn.). River Teign at Dunsford ; 



Plymouth district [Bellamy] ; River Taw, 



near Bishops Tawton 

 Anodonta cygnaa (Linn.) 

 Sphierium comeum (Linn.) 



— ovale (F6r.). Exmouth 



— lacttstre (MuU.). Exmouth ; Plymouth j 



Braunton Burrows, near Barnstaple 



Pisidium amnicum (MuU.) 



— pusillum (Gmel.). Exmouth ; Plymouth ; 



Braunton Burrows, near Barnstaple 



— nitidum, Jenyns. Wonford, near Exeter 



— fmtinale (Drap.). Exminster Marshes, where 



also the variety, by most now considered a 

 separate species, P. Henslowianum is found ; 

 Braunton Burrows 



— miRum (Held.). Exminster Marshes ; Braun- 



ton Burrows 



l6l 



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