THE MOLLUSCAN FAUNA OF THE OUTER HEBRIDES *8i 



several each of var. minor and var. leucozona (id.) ; Trilleachan 

 beach near Carloway, numerous, including a few each of var. 

 leucozona and var. hyalozona, 8th September 1918 (id.); Butt 

 of Lewis, monst. subscalare (Rev. G. A. Frank Knight). 

 Mr Dyke remarks that the species occurs abundantly in these 

 isolated stations on the western coast, always on the short 

 grass on sandy slopes, but at the least suggestion of peaty 

 deposits all traces of this snail disappear; the grounds on 

 which they appear are used extensively for sheep-grazing. 



Harris. Isle of Harris (Alder Collection, November 1884) ; 

 Isle of Harris, J. Stark, var. leucozona, pale (id.). 



North Uist. Balelone, July 1905, var. aff. leucozona (J. 

 Waterston) ; Balishare, several, dead (G. A. Frank Knight, 

 November 19 16). 



Benbecula. Benbecula, a few, dead (G. A. Frank Knight, 

 November 19 16). 



South Uist. South Uist, September 1886, dead shells (J. E. 

 Somerviile) ; Dalabrog, abundant, adult and young (G. A. 

 Frank Knight, November 191 6). 



Barra. On gneiss, September 1886 (J. E. Somerviile); 

 Barra, on gneiss, September 1886, var. instabilis (id.) ; Borve 

 Bay and Loch Mhor, numerous, including a few var. leucozona 

 (G. A. Frank Knight, November 19 16) ; Barra, one, var. 

 leucozona, sent labelled "v. maritima" (id.); Vatersay, numerous, 

 adult and young, dead and beach-worn, also one small and 

 immature var. instabilis + leucozona, with much-risen spire, 

 otherwise leucozona in markings (id.). 



Helicella acuta. 



Lewis. Churchyard of old church of Eye near Stornoway, 

 9th September 1886, one (A. Somerviile); Butt of Lewis, 

 October 191 5 (R. Clyne per W. Evans); Carnis near Uig, 

 two in nettles on cliffs, 31st July 19 18 (F. Montague Dyke); 

 Trilleachan beach near Carloway, nth September 1918, 

 numerous, including vars. bizona, strigata, and unizonata (id.). 



North Uist. Griminish Point, Balelone, type with vars. 

 coalita, articulata, and strigata, July 1905 (J. Waterston). 



Benbecula. Benbecula Island, gneiss and sand, a few 

 (J. E. Somerviile, October 1886) ; Benbecula Island, 13th 

 September 1886, var. bizona, one (id.). 



South Uist. South Uist, September 1886, one, dead 

 (J. E. Somerviile) ; Dalabrog, numerous, including many of a 

 rufous tint (G. A. Frank Knight, November 1916). 



LI 



