ARION ATER. 183 



„,,,.. , „ SCOTLAND. 



Ayr— Skelmorhe, Aug. 1886 ! W. Denison Roebuck. Maybole ! W. Evans. 



Peebles— Sub-var. hUeo-pallescms, Ilidilenlees and Leadbuvn, July 1889 ! \V. D. 

 Roebuck. 



Berwick— Sub-var. luteo-pallesccns, Cowdenknowes, and Pease Dean near Cock- 

 burnspath, Aug. 1886 ! W. Denison Roebuck. 



Stirling-- Sub-var. luteo-pallescens, Balmore, Sept. 1888 ! A. Shaw. 



Dumbarton — Garscadden, June 1889 ! A. Shaw. 



Antrim— Cave Hill, Belfast, Marcli 1884 ! S. A. Stewart. Dunluce Castle, Dec. 

 1883, L. E. Adams. Sub-var. luteo-pallescens, Cushendun, May 1886 ! S. A. Brenan. 



Armagh— Sub-var. luteo-pallescens, Armagh, June 1885 ! Rev. H. W. Lett. 



Donegal— Sub-var. luteo-pallescens, Lettei-kenny, May 1889 ! H. C. Hart. 



Louth — Sub-var. livida, near Drogheda, Oct. 1904! P. H. Grierson. 



Dublin — Sub-vars. aurantia and luteo-pallescens, common by road-sides, Doniiy- 

 brook, Aug. 1888 ! G. A. Barrett-Hamilton. 



Kildare— Maynootli, Nov. 1891, R. F. Scliarif. 



Wicklow— Sub-var. livida, with perceptible lateral banding, Ennislcerrv Au"- 

 1904 ! P. H. Grierson. J. o- 



Wexford— A yellowi.sli fawn-coloured var. at We.xford, Sept. 1890! R. E. Seharff. 



Carlo w— Fen agli House, Bagenalstown, Sept. 1904 ! D. K. Pack-Beresford. 



Mayo W. — Sub-var. aurantia, with faint lateral bands, Enniscoe demesne, 

 Crossmolina, Sept. 1885 ! W. V. de Vismes Kane. 



Clare— Sub-var. livida, Woodpark, Scariff, Sejit. 1904 ! N. F. Hibbert. 



Tipperary S.— Melview, Clonmel, Oct. 1904 ! Mrs. JMalcolnison. 



Cork N. — Youghal (Humphreys, Fauna and P'lora of_Cork, 184,"), p, -2). Var. 

 succinea and sub-var. livida, near Cork, Sept. 1904 ! (_'. Baker. 



Kerry — Sub-var. luteo-pallescens, Kilfiynn, Sept. 1904 ! J. Julian. 



CONTINENTAL DISTRIBUTION. 



Belgium— Sub-var. livida, Trooz near Li^ge. Sub-var. palhscens, Chaudfontaine 

 and Stoumont (Colbeau, op. cit. ). 



France — This variety has been reported from the Cantal, Cote d'Or, Haute Loire, 

 Maine-et-Loire, Morbihan, Oise, Puy-de-D6me, Rhone, Seine, Somine, andVosges. 



Switzerland— A yellowish-fawn coloured variety, with red foot-fringe, common 

 at Engelberg in Canton Unterwalden, and Sonnenbergin Canton Lucerne, July 1904 ! 



Spain — Galicia (Macho t. Hidalgo, Hojas Malacologieas, 1870). 



Russia — Recorded by Kaleniczenko as var. schi-anckii for Aclityrka, Lebedin, 

 and Zmiew, in the government of Kharkov, but according to Simroth in eiror. 



Var. alba L., Sy.st. Nat., ed. xii., 1767, p. 1081, no. 2. 



Lh?iax albus marginc hiteo Miiller, Ebterr. om Swamp., 1763, p. 61. 



Liiiiax albus L., op. cit. 



Arwn albus F4r., Hist. Moll., 1819, p. 61, pi. 2, f. 3. 



Arion albits var. shnplcv Moquin-Tandon, Hist. Moll. France, 1855, ii., p. 12. 



Arion albus var. marginatus Moquin-Tandon, op. cit. 



Arion albus var. oculatus Moquin-Tandon, op. cit. 



Arion albus var. elegans Moquin-Tandon, op. cit. 



Arion ater var. cinereo-nebulosus Jensen, Indheretning, 1872. 



Arion ater var. albida Roebuck, J. of Conch , 1883, iv. , p. 40. 



Lochia alba Malm, Skand. Land Snigl., 1878, p. 37, pi. 1, f. 2. 



Body white or whitish, with or without yellow foot-fringe, and perceptible 

 pigmented lineolation. 



The sub-var. simplex is uniformly white or whitish. 



The sub-vars. maPginata and albida are wliite or whitish with yellow foot- 

 fringe, and are also in part the var. palhscens of Moquin-Tandon. 



The sub-var. elegfans is white or whitish with orange head and foot-fringe. 



The sub-var. oeulata is white or wliitish with black tentacles. 



The sub-var. elnereo-nebulosa is whitish dorsally, with obscure cinereous 

 spots on the sides of the body and sole, foot-fringe yellow. It forms an interesting 

 connecting link with the var. bocagei through the var. ijlauca. 



This variety, according to Leach, is chiefly found in chalky districts, while 

 Dumont and Mortillet believe it to be due to living in very shady forests. The 

 variation is usually pathological, being really due to a deficiency of secretory power, 

 but is sometimes found in young specimens in which that function is as yet unde- 

 veloped, and is a condition liable to occur wherever the species is found ; but the 

 real cause of the deficiency is still obscure, though Gredler states that the preval- 

 ence of the albine form is often an indication that the species has reached the limit 

 of its horizontal or vertical distribution. 



