ARION ATER. 183 
SCOTLAND. 
Ayr—Skelmorlie, Aug. 1886! W. Denison Roebuck. Maybole! W. Evans. 
Peebles—Sub-var. /utco-pallescens, Riddenlees and Leadburn, July 1889 ! W. D. 
Roebuck. 
Berwick—Sub-var. /iteo-pallescens, Cowdenknowes, and Pease Dean near Cock- 
burnspath, Aug. 1886! W. Denison Roebuck. 
Stirling—Sub-var. /uteo-pallescens, Balmore, Sept. 1888 ! A. Shaw. 
Dumbarton —Garscadden, June 1889! A. Shaw. 
| ; IRELAND. 
Antrim—Cave Hill, Belfast, March 1884! 8. A. Stewart. Dunluce Castle, Dec. 
1883, L. E. Adams. Sub-var. /uteo-pallescens, Cushendun, May 1886! 8. A. Brenan. 
Armagh—Sub-var. /uteo-pallescens, Armagh, June 1885 ! Rev. H. W. Lett. 
Donegal—Sub-var. /uteo-pallescens, Letterkenny, May 1889! H. C. Hart. 
Louth—Sub-var. divida, near Drogheda, Oct. 1904! P. H. Grierson. 
Dublin—Sub-vars. aurantia and luteo-pallescens, common by road-sides, Donny- 
brook, Aug. 1888! G. A. Barrett-Hamilton. 
Kildare—Maynooth, Nov. 1891, R. F. Scharff. 
Wicklow—Sub-var. /ivida, with perceptible lateral banding, Enniskerry, Aug. 
1904 ! P. H. Grierson. i 
Wexford—A yellowish fawn-coloured var. at Wexford, Sept. 1890! R. F. Schart?. 
Carlow—Fenach House, Bagenalstown, Sept. 1904 ! D. R. Pack-Beresford. 
Mayo W.—Sub-var. auwrantia, with faint lateral bands, Enniscoe demesne, 
Crossmolina, Sept. 1885 ! W. F. de Vismes Kane. 
Clare—Sub-var. dimda, Woodpark, Seariff, Sept. 1904! N. EF. Hibbert. 
Tipperary S.—Melview, Clonmel, Oct. 1904 ! Mrs. Maleolmson. 
Cork N.—Youghal (Humphreys, Fauna and Flora of Cork, 1845, p. 2). Var. 
succined and sub-var. divida, near Cork, Sept. 1904! C. Baker. 
Kerry—Snub-var. luteo-pallescens, Wilflynn, Sept. 1904! J. Julian. 
CONTINENTAL DISTRIBUTION. 
Belgium —Sub-var. divida, Trooz near Liége. Sub-var. pallescens, Chaudfontaine 
and Stoumont (Colbean, op. cit.). 
France—This variety has been reported from the Cantal, Cote d’Or, Haute Loire, 
Maine-et-Loire, Morbihan, Oise, Puy-de-Dome, Rhone, Seine, Somme, and Vosges. 
Switzerland—A_ yellowish-fawn coloured variety, with red foot-fringe, common 
at Engelberg in Canton Unterwalden, and Sonnenberg in Canton Lucerne, July 1904! 
Spain—Galicia (Macho t. Hidalgo, Hojas Malacolégicas, 1870). 
Russia—Recorded by Kaleniczenko as var. schranekii for Achtyrka, Lebedin, 
and Zmiew, in the government of Kharkov, but according to Simroth in error. 
Var. alba L., Syst. Nat.; ed: xii., 1767, p. 1081, no. 2. 
> > d > 2 
Limax albus margine luteo Miller, Esterr. om Swamp., 1763, p. 61. 
Limax albus L.., op. cit. 
Arion albus Fér., Hist. Moll., 1819, p. 64, pl. 2, f. 3. 
Arion albus var. sintplex Moquin-Tandon, Hist. Moll. France, 1855, ii., p. 12. 
Avion albus var. marginatus Moquin-Tandon, op. cit. 
Avion albus var. oculatus Moquin-Tandon, op. cit. 
Arion albus var. elegans Moquin-Tandon, op. cit. 
Arion ater var. cinereo-nebulosus Jensen, Indberetning, 1872. 
Arion ater var. albida Roebuck, J. of Conch., 1883, iv., p. 40. 
Lochea alba Malm, Skand. Land Snigl., 1878, p. 37, pl. 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. marginata and albida are white or whitish with yellow foot- 
fringe, and are also in part the var. pallescens of Moquin-Tandon. 
The sub-var. elegans is white or whitish with orange head and foot-fringe. 
The sub-var. oeculata is white or whitish with black tentacles. 
The sub-var. einereo-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. bocaget through the var. glauca. 
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. 
