XEROPHILA VIRGATA. 159 
VARIATIONS IN COLOUR OF SHELL. 
Var. nigrescens Grateloup. 
Helix variabilis var. nigrescens Grateloup, Moll. l.andes, 1829. 
SHELL with the whole surface suffused with purple-brown. 
[The var. nigrescens of Westerlund is not this variety, but a fasciate form with 
very dark zonulation]. 
This form is usually more or less segregated, but is also of more or less sporadic 
distribution. At Yarmouth, Isle of W ight, this variety is chiefly concentrated 
within the space of a few square yards of sea cliff, where the prevalent plant is 
Carduus tenuifolius, on whose stems and leaves it is found associated with the 
typical form. 
BRITISH DISTRIBUTION. 
Devon S.—Beer Head, Nov. 1903! F. J. Partridge. 
Devon N.—Paddington, 1903 ! F. J. Partridge. Woolacombe, 1910, H. Watson. 
Somerset N.—Burnham ! Rev. Canon Norman. Weston-super-Mare, R.Standen. 
Dorset—Quarry, Portland, Sept. 1889! N. M. Richardson. Poole, C. E. Wright. 
Sussex W.—Kingly Vale, (inchesten Rev. W. A. Shaw. Lewes, Mr. Jenner. 
Sussex E.—Seaford, A. H. Jowett- Murray. Winchelsea, E. W. Swanton. 
Kent W.— Brookland, Aug. 1896, Lionel E. Adams. 
Isle of Wight— Freshwater, 1878! J. W. Wood. Not uncommon on Carduus 
tenuifolius, Afton Downs ! C. Ashford. 
Lincoln N.—On Brassica rapa, Cadney ! Rey. E. A. Woodruffe - Peacock. 
Yorks. S.E.—Plentiful near the sea, Hornsea, July 1880, J. Darker Butterell. 
Icilnsea Warren, Spurn, T. Petch. 
Yorks. N.E. "—_ Crossgates near Scarborough, Aug. 1889, J. A. Hargreaves. 
Carmarthen— Laugharne, Sept. 1883, C. Jeffery. Pendine, G. W. “Mellors. 
Pembroke — Giltar, St. Catherine’s Rock, Jubilee eardens, Ritee gardens, 
Manorbier, and occasionally on the Burrows at Tenby, A. G. Stubbs. 
Wexford—Rosslare sand-bank, Sept. 1889 ! G. Barrett- Hamilton. 
Cork—Youghal, Aug. 1902 ! P. H. Grierson. 
Kerry S.—Venting, Dingle, R. Welch and A. W. Stelfox. 
FOREIGN DISTRIBUTION. 
France — Environs of Paris (Pascal); Dax and Le Puoy-du-Hour, Landes 
(Grateloup). Nimes, Gard (M. Clement). 
Spain—Plentiful but small, Algeciras, Andalusia (IX. H. Jones). 
Var. rufula Moquin-'andon. 
Helix variabilis var. rufuda Moquin, Hist. Moll., 1853, p. 263. 
SHELL nearly uniformly dark rufous. 
This variety is probably rare, as there are comparatively few undoubted records. 
BRITISH DISTRIBUTION. 
Channel Isles—Alderney (Tomlin and Marquand, Journ. of Conch., x, p. 389). 
Somerset N.—Near Burnham (Norman, Somerset list, 1861). 
Dorset—Wyke-Regis, near Weymouth, August 1886, J. RB. le B. Tomlin. 
Lancashire S.—Southport, 1915 ! W. J. Farrer. 
WALES. 
Glamorgan— Limestone clifis near Cardiff, April 1907 ! H. R. Wakefield. 
Pembroke—South Cliff, Tenby, Oct. 1895 ! A. G. Stubbs. ee 
RELAND. 
Dublin—Near Dublin, J. W. Warren! Alder Collection, Newcastle Museum. 
FOREIGN DISTRIBUTION. 
France—Recorded for the environs of Paris by M. Paseal; from Durfort, near 
Soréze, Tarn, by Moquin-Tandon ; and from Nimes, Gard, by M. Clement. 
Algeria— Recorded from Oran by M. Bourguignat. 
Var. lutescens Moquin-l'andon. 
Helix variabilis var. lutescens Moq., Hist. Moll., 1855, vol. ii, p. 263, 
Helix lineata var. lutescens Mogq., op. cit., p- 266, 
Helix lauta var. lutescens Bourguignat, Mal. Alger. ., 1864, vol. i, p. 223. 
SHELL uniformly yellowish. 
This form, though sometimes associated with other varieties or with the typical 
form, more usually ‘lives in more or less segregated communities. 
Its distribution is practically coincident with that of the typical form, but pre- 
cise and definite records are very scanty. 
