By E. W. Swanton. 75 



size in the Kiver Avon, in the north of Wiltshire " (= Helix auricu- 

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

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

 approached variety ampla " (Cockerell); Devizes (Miss Cunnington 

 and Heginbothom) ; Trowbridge, Salisbury (Vize) ; half-mile N.W. 

 of Man ton House, Marlborough (Bromehead). 



Limnaea pereger (Miiller).— A common species. Very fre- 

 quent in any likely places and varying in size according to circum- 

 stances " (Vize) . The Helix limosa which Montagu found " sparingly 

 in the Eiver Avon " was probably a form of this species. Brick- 

 earth at Fisherton (Blackmore) ; Great Bedwyn (Townsend) ; Avon 

 at Salisbury, Stourton, Devizes, Amesbury, etc. (E. W. S.). 



var. vulgaris (G. 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 the end of Lord Methuen's Park, Salisbury, Devizes, Hunger- 

 ford (Vize) ; Marlborough (Bromehead) ; Amesbury and Avebury 

 (E. W. S.). 



var. elegans (Jeffreys). — Devizes (Miss Cunnington). 



Limnaea Stagnalis (Linne). — Locally abundant. Montagu's 

 Helix fragilis is probably the var. fragilis ; he remarks "The only 

 place in which this has ever occurred to us is the canal intended 

 to make a junction of the Kennet and Avon, between Chippenham 

 and Laycock. Many that were collected from that water were 

 all of the same slender shape, and in the younger shells there were, 

 in all we examined, a few opaque white lines, crossing the smaller 

 volutions. The largest measured an inch-and-a-half in length and 



