280 



Wiltshire Fresh-water and Terrestrial Shells. 



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



Achatina acicula, (Lamarck.) in decaying bulbs of tulips at Salisbury. The 

 dead shell is frequent at Salisbury. 

 Clausilia laminata, (Turton, C. bidens Gray) Clarendon, Ashcombe, Devizes. 

 C. biplicata, (Pfeiffer) Roundway, Durnford. 



C. perversa, (Moq.-Tandon, C. nigricans Gray) Corsham, Maiden-Bradley, 

 Warminster, Devizes. 

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

 Pupa seeale, (Moq.-Tandon) Ashcombe, Durnford, Devizes. 

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



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



Yertigo antivertigo, (Michaud) Stratford-sub-Castle. 



V. pygmsea (Ferrussac.) Banks of Kennet and Avon Canal at Trowbridge. 



Y. striata (Reeve, Y. substriata Gray) Roundway Hill, Devizes. 



Y. edentula (Studer) Corsham. 



FAMILY. AURICULACE^]. 

 Carychium minimum, (Mutter) roots of grass at Roundway, Salisbury. 



FAMILY. LYMJSTiEACEA. 

 Planorbis corneus, (Poiret.) rare at Salisbury, and probably imported, says 

 Dr. Blackmore. 



P. albus, (Mutter) 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, (Mutter) in Kennet & Avon Canal, on weeds at Trowbridge, 

 Salisbury. 



P. complanatus, (Studer, P. marginatus in Gray and Draparnaud) in a ditch 

 between Trowbridge and Studley, Salisbury, Canal at Devizes. 



P. vortex, (Mutter) very abundant near Corsham and Trowbridge, North- 

 Bradley, Canal at Devizes. 



P. spirorbis, (Mutter) Kennet & Avon Canal, Stratford-sub-Castle, Salisbury, 

 Steeple-Ashton. 



P. contortus, (Mutter) Canal at Devizes, Salisbury. 



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



P. nitidus, (Mutter, Segmentina nitida of Fleming and Gray) one shell found 

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

 Road, 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. 



Lymna3a limosa, (Fleming, Lym. pereger of Draparnaud and Gray) very 

 frequent in any likely places, and varying in size aocording to ciroumstances. 



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



