By E. W. Swanton. 79 



occurring only in two localities. Salisbury and Devizes (Vize). 

 Specimens from the latter place are in Miss Cunnington's collection. 

 Vivipara vivipara (Linne). — Locally abundant, but certainly 

 not a common species. So very abundant at certain seasons that 

 they can be collected in great numbers from the Kennet and Avon 

 Canal at Trowbridge, canal at Heybrook, and Devizes (Vize) ; 

 canal at Cricklade, canal near Wroughton, Marlborough (Brome- 

 head). 



Valvata piscinalis (Miiller). — A common species. "We have 

 found it in various parts of Wiltshire, especially in the Avon, and 

 in the moat round the old castle at Marlborough" ( = Turbo 

 fontinalis, Test. Brit., p. 349). Canal reservoirs at Devizes (Vize) ; 

 brickearth at Eisherton (Blackmore) ; stream at Amesbury, Calne, 

 and Salisbury (E. W. S.). 



Valvata cristata (Miiller.). — A very local species. "Not 

 uncommon in drifted sand in the Eiver Avon with the last (Pla- 

 norhis alius), and sometimes on aquatic plants, but more plentiful 

 in a ditch near Wedhampton in Wiltshire ; it may, however, be 

 considered as rather a scarce, or at least, a very local species " 

 (—Helix cristata, Test. Brit., p. 461). Canal at Trowbridge, 

 Salisbury (Vize); Edington and Amesbury (E. W. S.). 



Pomatias elegans (Miiller). — Widely distributed on the 

 chalk. In the woods at Lackham (Montagu); Boundway Hill, 

 Salisbury (Vize) ; Devizes (Miss Cunnington and Heginbothom) '; 

 Edington and Marlborough (E. W. S). 



var. albescens (Des Moulins) . Gully on south side of Oare 

 Hill, near Marlborough (Bromehead). 



var. pallida (Moquin-Tandon) . — Lane on the south side of 

 Kennet, opposite Mildenhall, near Marlborough (Bromehead). 

 var. ochroleuca (Moquin-Tandon) . — Devizes (Miss Cunning- 

 ton and Heginbothom). 

 Acicula lineata (Draparnaud). A rare species. Dr. Blackmore 

 found it in the brickearth at Fisherton, and the Bev. J. E. Vize 

 on roots of grass at Upavon. See Addenda. 

 Neritina fluviatilis (Linne).— Avery local species. On stones 



