HYALINIA NITIDULA. 7(¢i 
Var. virens-albida Michaud, Compl., 1831, p. 45. 
Zonttes nitens var. a virens-albida Michaud, op. cit. 
Helix helmii Gilbertson ms., Alder, Mag. Zool. and Bot., 1837, p. 107. 
Zonites nitens var. albinos Moquin-Tandon, Hist. Moll. France, 1853, p. 84. 
Helix nitens var. detrita Dum. et Mort., Moll. Savoie, 1857, p. 33. 
Zonites nitens var. ofaca Locard, Mal. Lyon, 1877, p. 17. 
Helix nitens var. carthusiana Locard, Ann. Soc. Agr. Lyons, 1879. 
Original Description. —‘‘ Coq, . . . . quelquefois d’un blanc teint dune légere 
couche de vert (variété a)... .. ”—MICHAUD, Compl., 1831, p. 15. 
SHELL white, varying from a crystalline transparency often with a greenish or 
bluish tinge, to a more or less opaque pearly-white, usually with expanded ulti- 
mate whorl as in the var. nifens. 
The var. virens-albida s.s. and the sub-var. earthusiana are of a crystalline 
greenish-white. 
The sub-var. helmii is described by Alder as white in colour. 
The sub-var. opaea is of a glossy and opaque milk-white, with the last whorl 
much expanded. 
The sub-var. albinos of Moquin-Tandon is whitish or slightly azure. 
The sub-var. detrita is small, excoriated in places, and of a nacreous tint. 
The var. helmii as described by Westerlund (Fauna Europea Molluscorum 
Extramarinorum, 1877, p. 23) is not strictly referable to the variety as understood 
in this country, being described as of an uniformly yellowish colour, and as living 
in England, Denmark, Germany, Switzerland, south of France, ete. 
ENGLAND AND WALES. 
Channel Isles—Sub-var. hedmii, St. Saviour’s, Guernsey (Tomlin and Marquand, 
Journ. of Conch., Jan. 1903, p. 286). 
Somerset N.—Sub-var. opaca, Combe Dingle, near Bristol ! Miss F. M. Hele. 
Sussex W.—Sub-var. helm, Up Park and West Stoke, Sept. 1906 ! Rev. W. A. 
Shaw. 
Kent E.—Sub-var. he/mii, Minster near Ramsgate, Apr. 1883, T. D. A. Cockerell. 
Maidstone ! (Elgar and Lamb, Journ. of Conch., Jan. 18938, p. 154). 
Kent W.—Sub-var. helmii, Orpington and Chislehurst, Aug. 1885! T. D. A. 
Cockerell. Brasted, Nov. 1904! F. H. Sikes. Sevenoaks, rare (Smith, Zool., 1854, 
p- 4333). Type and sub-vars. helmii and opaca, Bostal Wood, Mar. 1898 ! F. Taylor. 
Surrey—Sub-v. helmii, Thames rejectamenta, Kew, Mar. 1884, T. D. A. Cockerell. 
Essex N.—<An almost diaphanous white variety is found in Little Stour Wood, 
Wrabness (Sheppard, Linn. Trans., 1825, p. 161). 
Norfolk E.—Sub-var. hedmii, Old Lakenham (A. Mayfield, J. of C., 1896, p. 185). 
Cambridge—Sub-var. helmii, Cambridge ! Hugh Watson. 
Notts. —Sub-var. Helmiz, Kingshaugh ! April 1885, and near Tuxford, W. Gain. 
Derby—Sub-var. helmii, Miller’s Dale, P. B. Mason. 
Lancashire Mid—Sub-var. helmii, Preston ! (Alder Coll., Neweastle Museum). 
Near Fleetwood, Sept. 1891 ! L. E. Adams and C. Oldham. Woodwell, Silverdale, 
Sept. 1905! R. Standen. Bank Well, Silverdale, Nov. 1904! J. W. Jackson. 
Cheshire—Sub-var. Aelmii, Compstall near Stockport, F. Taylor. 
York N.E.—Specimens of sub-var. helmii, labelled ‘‘Scarborough” in the British 
Museum, Sept. 1886! By roadside near Marske, under stones, amongst nettles, 
Oct. 1883 ! Baker Hudson (see tail piece on page 80). 
York S.W.—A sub-variety with a pinkish tinge at Newton near Wakefield 
(J. Hebden, Quart. Journ. of Conch., 1874, p. 5). Buck Wood, Thackley, with 
H, alliaria vay. viridula, 1894, A. Hartley. 
York Mid W.—Sub-var. helmii, near Seacroft Church, Sept. 1876! W. Nelson. 
Fairly common on a moist part of the railway bank at Apperley Bridge, Aug. 1894! 
A. Hartley. 
SCOTLAND. 
Main Argyle—Sub-var. helmii, Ardbhan Craigs near Oban, G. W. Chaster 
(Standen and Hardy, Journ. of Conch., Oct. 1893, p. 269). 
IRELAND. 
Antrim—Sub-var. he/mii, on old building in wood, Ballycastle; also one with only 
the body whorl pure white, Sept. 1896 (Standen, Irish Nat., Jan. 1897, p. 4). Cave 
Hill, Jan. 1897, Portaleen Glen, July 1897, and Fair Head, Sept. 1907, R. Welch. 
Down—Sub-var. helmii, Castlereagh Glen, 1898, R. Welch. 
Donegal—Type and sub-var. he/mii, under stones, Portsalon, and in burial 
ground at Fahan, May 1893! R. Standen. 
Kilkenny—Sub-var. he/mii, near Attenagh ! P. H. Grierson. 
Leitrim—Sub-var. helmii, Mohill, July 1904! P. H. Grierson. 
