60 The Mollusca of Wiltshire. 



to Salisbury, where ifc is joined by its tributaries, the Wyly and 

 Nadder (uniting at Wilton), from the south-west. 



The Kennet and Avon Canal forms the separating line between 

 the two vice-counties. It enters the county at Hungerford, bending 

 to the south-west to Pewsey Vale (Greensand) through which it 

 winds a westerly course to Devizes. West of this town it is cut 

 through the Oolites, passing successively over Portland Beds, 

 Oxford Clay, and Cornbrash, joining the Avon a few miles south 

 of Bradford on the western border of the county. 



One-hundred-and-eleven species have been observed. Four of 

 these are new records : — Agriolimax Icevis, Milax Sowerbyi, and 

 Vallonia excentrica have been added by the writer; Planorbis glaber 

 was found by Mr. F. Townsend at or near Great Bedwyn more 

 than half-a-century ago, but its occurrence there has not been 

 previously published. 



That much work still remains to be done by Wiltshire con- 

 chologists is evident from the fact that for no less than fifteen 

 species only one locality is known at present. They include the 

 above-mentioned new records, also Arion intermedins, Hygromia 

 fiosca, Azeca tridens, Vertigo substriata, V. pygmcea, V. avgustior, 

 Clausilia rolphii, Amphipeplea glutinosa, Limncea glabra, Pisidium 

 nitidum, and P. gassiesianum. 



A thorough exploration of Savernake Forest seems very desirable. 

 There is every reason to expect that conchologists would reap as 

 rich a harvest as did the mycologists during the visit of the British 

 Mycological Society in October, 1903. Here Limax tenellus should 

 be specially sought for. 



Testacella maugei (Ferussac).— Very local, apparently only 

 around Devizes and in the gardens at Longleat. Southbroom, 

 Devizes (Miss Cunnington) ; Longleat Gardens, Warminster, J. 

 Trollope (Webb, /. of Malac, Dec, 1897, p. 49.) " They are some- 

 times found in Devizes, but not in large numbers, and only when 

 the gardeners are preparing their ground for crops, or digging up 

 their crops; the demand here for them, for the sake only of .their 

 palates, is great, and the price high, comparatively. I have bought 

 them at a penny each, but since the demand has increased, so has 



