l82 JOURNAL OF CONCHOLOGY, VOL. 12, NO. 7, JULY, I908. 



as being the only species found in this deposit which does not exist at 

 the present time in that district. It should be carefully sought for 

 by Wiltshire conchologists as it occurs in Somerset and Devon. 



Carychium minimum Miiller. — Widely distributed. "We have 

 found it in several parts of Wiltshire, particularly in Lackham Wood, 

 and in drifted sand of the River Avon" {^=Turbo carychium, Test. 

 Brit., p. 339). Brickearth at Fisherton (Blackmore) ; roots of grass 

 at Roundway, Salisbury (Vize); Sw^indon (Cockerell); Edington and 

 Marlborough (E.W.S.). 



Ancylus fluviatilis Miiller. — A very local species. Brickearth 

 at Fisherton (Blackmore) ; canal reservoirs at Devizes, Salisbury 

 (Vize); Devizes (Miss Cunnington). 



Acroloxus lacustris (Linne). — ^Locally abundant. "We have 

 found them tolerably plentiful in a fishpond at Lackham, in Wiltshire, 

 and in the River Avon, on the stalks of the yellow water lily; but is 

 rarely, if ever, found in rapid water, in which the fltwiatilis seems 

 most to delight" {=Fatella lacustris, Test. Brit., p. 484). Ponds near 

 Lavington, Salisbury (Vize); stream at Amesbury (E.W.S.); Laving- 

 ton and Devizes (Miss Cunnington); Swindon (Cockerell). 



var. moquiniana Bourguignat. — Swindon (Cockerell). 

 Limnasa auricularia (Linne). Widely distributed in the two 

 Avons and in the canals. "We have found it of a superior size in 

 the River Avon, in the north of Wiltshire" {^Helix auricularia, Test. 

 Brit., p. 376). Swindon, "in the canal and elsewhere, apparently 

 as common as L. peregra in the district. One specimen approached 

 variety a?npla" (Cockerell); Devizes (Miss Cunnington and Hegin- 

 bothom); Trowbridge, Salisbury (Vize); half-mile N.W. of Manton 

 House, Marlborough (Bromehead). 



Limnsea pereger (Miiller). — A common species. "Very frequent 

 in any likely places and varying in size according to circumstances" 

 (Vize). The Helix limosa which Montagu tound "sparingly in the 

 River Avon" was probably a form of this species. Brickearth at 

 Fisherton (Blackmore); Great Bedwyn (Townsend); Avon at Salis- 

 bury, Stourton, Devizes, Amesbury, etc. (E.W.S.). 



var. vulgaris C. Pfeiffer. — Stourton and Amesbury (E.W.S.). 



var. lutea Montagu.— Edington (E.W.S.). 



m. scalariforme. — Warminster (Jeffreys). 

 Limnaea palustris (Miiller). — Widely distributed. North 

 Bradley, Trowbridge, Salisbury, Devizes (Vize) ; brickearth at 

 Fisherton (Blackmore); Elcot Mill, Marlborough (Bromehead); 

 Swindon (Cockerell); stream at Amesbury, Avon at Salisbury (E.W.S.). 

 Limnaea truncatula (Miiller). — A common species. Brick 

 earth at Fisherton (Blackmore); numerous in a ditch at Corsham, at 



