DOA HELIX HORTENSIS. 
Var. rufozonata Cockerell. 
Helix hortensis var. rufozonata Cockerell, Science Gossip, 1887, p. 67. 
SHELL yellow, with pale red-brown bands. 
That this rufous zonulation is probably due to the environment is shown by 
the simultaneous occurrence of this variation in Helir hortensis, H. nemoralis and 
H. aspersa, all within a limited area near Torquay. 
ENGLAND AND WALES. 
Devon S.—Torquay, 1886, F. W. Wotton. 
Somerset S.—Bridewater, Sept. 1884 ! W. Vinson. 
Somerset N.—Bruton, Sept. 1910 !C. D. Heginbotham. 
Dorset—Lulworth, Aug. 1884 !8. ©. Cockerell. 
Wilts. S.—Devizes, July 1910 !C. D. Heginbotham. 
Hants. N.—Swarraton, near Alresford, Oct. 1890 ! Rev. W. L. W. Eyre. 
Kent E.— Ashford, 1883! Miss Fairbrass. Folkestone, Aug. 1883 ! R. M. Christy. 
Surrey—Warlingham, July 1884 !5. C. Cockerell. 
Norfolk E.—Catton near Norwich, 1858, H. J. Bellars. 
Northampton—Northampton road, Nettering, July 1895 !C. KE. Wright. 
Gloucester W.—Selsley Hill and Stroud ! E. J. Elliott. 
Glamorgan—East Moors, Cardiff ! F. W. Wotton. 
Lincoln N. —Grisel Bottom, near Louth, Sept. 1889! W. Denison Roebuek. 
Luddington, July 1906! J. F. Musham. 
Lancashire S.--Warrineton, 1858, H. J. Bellars. 
York Mid W.—Bishop Thornton, Jan. 1884 ! W. Storey. 
Haddington—North Berwick, Rev. Dr. MeMurtrie. 
Sutherland E.—Brora, April 1890 ! W. Baillie. 
SCOTLAND. 
FOREIGN DISTRIBUTION. 
Germany —Recorded by Dr. J. P. E. F. Stein from Berlin, Brandenburg. 
France—Cited by Moquin-Tandon as var. putonia (12345) from Soreze, Tarn. 
Canada—Little Codroy River, Newfoundland, L. P. Gratacap. 
United States—Recorded from Massachusetts at Magnolia, by Prof. Cockerell ; 
from Sciasconset, Nantucket Island, by Dr. Pilsbry; and by Dr. Mighels from a 
little island in Caseo Bay, Maine. 
Var. arenicola Macgillivray. 
Helix hortensis var. arenicola Macgillivray, Moll. Aberdeen, 1843, p. 83. 
Helix hortensis var. lurida Moquin-Tandon, Hist. Moll., 1835, p. 167. 
Helix hortensis var. hyalozona, Vaudon, Journ. de Conch., 1884, p. 237. 
Helix hortensis var. albina-fasciata Williams, Journ. of Conch., 1889, p. 12. 
SHELL pale yellow, with translucent unpigmented bands. 
The original description by Prof. Macgillivray is :—‘Shell subglobose, very thin 
and diaphanous, with five opaque white bands, the epidermis thin, pale sulphur- 
yellow, the peristome thin, with an internal opaque white rib. Has a faint 
alliaceous odour.” 
The vars. areniecola, hyalozona, and albina-fasciata are strictly identical, 
and it is also the faseiata-pellucida of M. Ancey and Dr. J. 8. Gibbons. 
Miss Esinark records this form from Norway as v. albida with transparent bands. 
The sub-var. lurida has the bands only partially pigmented, and connects the 
transIneent banded forms and those with fully pigmented banding. 
Prof. Macgillivray obtained his specimens of var. arenicola from the sandhills 
about Black Dog Farm, Belhelvie, South Aberdeen, where they abounded unmixed 
with other forms, and are still found there, the arenaceous habitat suggesting the 
name arenicola, which he applied to it. ; 
The loss of pigment by the spiral banding, which is the characteristic of this 
variety, has been ascribed to the influence of food or of climatic vicissitudes; as 
it has been found in several districts of Belgium exclusively upon gooseberry 
bushes, and in this country has been remarked by several observers to show a 
preference for the horse radish and wild parsnip; while Herr Dietz has recorded 
and observers in this country have confirmed that in the present and allied species 
translucent banded shells are most numerous during wet years, and that although 
in normal seasons the shells may present strongly pigmented bands, yet a wet 
season’s growth tends to develop banding deficient of the usual colouring. 
