280 Wiltshire Fresh-water and Terrestrial Shells. 



Azeca tridens, {Leach,) Rare at Clarendon Wood. 



Achatina acicula, {LamarcTi.) in decaying bulbs of tulips at Salisbury. The 

 dead shell is frequent at Salisbury. 



Clausilia laminata, {Turton, C. bidens Gray) Clarendon, Ashoombe, Devi2es. 



C. hipHcata, {Pfeiffer) lloundway, Durnford. 



C. perversa, (Jfog^.-Tanc^ow, C. nigricans Gray) Corsham, Maiden-Bradley, 

 Warminster, Devizes. 



Balea perversa, [Fleming) Ashcombe, Salisbury, Devizes. 



Pupa secale, [Moq.-Tandon) Ashcombe, Durnford, Devizes. 



P. muscorum, {Moq.-Tandon) Salisbury. 



P. cylindracea, {Moq.-Tandon, P. umbillicatus Gray) Salisbury, Devizes. 



Vertigo anti vertigo, {Michaud) Stratford-sub-Castle. 



V. pygmcea {Fei-russac.) Banks of Kennet and Avon Canal at Trowbridge. 



V. striata {Reeve, V. substriata Gray) Eoundway Hill, Devizes. 



V. edentula {Studer) Corsham. 



FAMILY. ATJRICULACE^. 

 Carychium minimum, {Muller) roots of grass at Eoundway, Salisbury. 



FAMILY. LYMN^ACEA. 



Planorbis comeus, {Poiret.) rare at Salisbury, and probably imported, says 

 Dr. Blackmore. 



P. albus, {Muller) Canal at Trowbridge and Devizes, on cases of Caddis 

 worms, Salisbury. 



P. crista, {Reeve, P. nautileus of Fleming and Gray,) ponds near Lavington 

 and Devizes, Salisbury. 



P. carinatus, {Muller) in Kennet & Avon Canal, on weeds at Trowbridge, 

 Salisbury. 



P. complanatiis, {Studer, P. marginatus in Gray and Draparnaud) in a ditch 

 between Trowbridge and Studley, Salisbury, Canal at Devizes. 



P. vortex, {Muller) very abundant near Corsham and Trowbridge, North- 

 Bradley, Canal at Devizes. 



P. spirorbis, {Muller) Kennet & Avon Canal, Stratford-sub-Castle, Salisbury, 

 Steeple- Ashton. 



P. contortus, {Muller) Canal at Devizes, Salisbury. 



P. fontanus, {Fleming, P. nitidus in Gray) Devizes and Salisbury. 



P. nitidus, {Muller, Segmentina nitida of Fleming and Gray) one shell found 

 after many searches near the Canal bridge on the Trowbridge and Bradford 

 Eoad, Canal at Devizes. 



Physa fontinalis, {Draparnaud) abundant in the Canal at Trowbridge, 

 splendidly fine on the Trowbridge and Bradford road, Drews Pond Devizes, 

 Salisbury. 



P. hypnorum, {Draparnaud, Aplexa hypnorum of Fleming and Gray,) 

 large size at Corsham, sparingly and small on the Hilperton and Steeple- Ashton 

 road, Trowbridge very abundant, Salisbury. 



Lymnaea limosa, {Fleming, Lym. pereger of Draparnaud and Gray) veiy 

 frequent in any likely places, and varying in size according to circumstances. 



L. auric ularia {Draparnaud) Trowbridge, Devizes, Salisbury. 



