— 
40 HYALINIA CELLARIA. 
o 
Var. margaritacea Schmidt, Zeitschr. f. Malak., 1851, p. 183. 
Helix margaritacea Schmidt, op. cit. 
Zonites cellarius var. albida Jeffreys, Brit. Conch., 1862, i., p. 160. 
Zonites cellarius var. viridula Baudon, Nouv. Catal. Moll. Oise, 1862, p. 17. 
Zonites rigiacus Bourguignat, Mal. Quatre-Cantons, 1862, p. 21, pl. 1, f. 1-8. 
Zonites cellarius var. subalbida Locard, Etudes sur Var. Malac., 1880, i., p. 40. 
Hyalinia cellaria f. albina Westerlund, Faun. Palaarct. Reg., 1886, p. 4. 
SHELL white and transparent, or may be of a pearly or clear greenish aspect. 
This thicker shelled crystalline yellowish-green 
form is regarded by Clessin as a result of living in a 
very moist environment. 
The var. margaritacea s.s. is a diaphanous 
pearly-white. 
The sub-var. viridula is of a clear transparent ——, 
green tint. Cux?) 
The sub-var. albina is bluish-white and semi- 
opaque. 
The sub-var. subalbida is opaline-white, clearer E> 
beneath, with a paler animal than the type-form. We) 
The sub-var. albida is white or colourless. Ey 
According to Dr. Kobelt and others, the Zonites 
rigiacus Bourg. is really the crystalline form of the es a aaa dag Bourg., 
Hyalima cellaria, though regarded by its author asa geq (alten Bourenieneie ats 
giant species of the group of H. erystallina. It coin- 
cides most closely with Dr. Jeffreys’ var. a/bida, of which it may be regarded as a 
stunted alpine form. 
The truly albine form, in which the animal and shell are equally affected, is 
what the Mendelians would term Heterozygous, or a state capable of division into 
simpler character units. Frequently the shell only is albine, and the animal quite 
normally pigmented, or the reverse may occur, the animal being albine and the 
shell quite typical. Van den Broeck mentions a specimen found at Angre in 
Hainault in whieh the shell was normal, but the animal pure white, except the 
irides and the mantle-margin, the latter being thickly spotted with bright rufous. 
ENGLAND AND WALES. 
Cornwall W.—Looe, April 1903, Guy Breeden. 
Devon S.—Rousdon, April 1903, Guy Breeden. 
Hants. S.—Christchurch, Aug. 1883! Charles Ashford. 
Sussex E.—Landport near Lewes, C. H. Morris. 
Kent E.—Folkestone, Jan. 1883! Mrs. J. Fitzgerald. 
Kent W.—Mossy bank near Wrotham, Ang. 1884! T. D. A. Cockerell. 
Surrey—Box Hill, Aug. 1883, E. H. Rowe. Caterham Junetion, Sept. 1884 ! 
T. D. A. Cockerell. Grayswood, as var. viridulans (C. Pannell, Surrey List, 1902). 
Middlesex—Hampstead Heath, June 1888, J. W. Williams. 
Berks. —Sub-var. viridula, Maidenhead, July 1884, T. D. A. Cockerell. 
Oxford—Deddington, Wytham Hill and near Islip (Collinge, Conch., 1891, p. 19). 
Bucks.—Olney, March 1893! Lionel E. Adams. 
Northampton—W ood-pit, Stivington, Aug. 1884! W. D. Crick. Yardley Hast- 
ings, Aug. 1885! R. Rogers; and a small colony at Whilton, 1896, L. E. Adams. 
Gloucester W.—St. Vincent Rocks, Clifton, Oct. 1876 ! Miss F. M. Hele. 
Hereford—Dormington lime quarries (Bowell and Boycott, Herefordshire List, 
1899, p. 25). 
Worcester—Dudley Castle, Aug. 1899, Guy Breeden. 
Stafford—Canal bank, Milford, June 1886, Lionel E. Adams. Caldon Low, May 
1898: and Cheadle, J. R. B. Masefield. Ramsor! T. F. Burrows. Stone, E. D. 
Bostock. Wren’s Nest, near Dudley, J. Madison. 
Carmarthen—Laugharne, Oct. 1889 !G. W. Mellors. 
Pembroke—Not uncommon with the type in various places around Tenby, 
usually clear white, but sometimes clouded (A. G. Stubbs, J. of C., 1900, p. 323). 
Anglesey—Puitlin Island, Aug. 1883 ! John Hopkinson. 
Lincoln S.—Common about Ancaster, April 1886! W. D. Roebuck. Grantham, 
July 1902 ! C. 8. Carter. 
Lincoln N.—Beech wood, Well Vale, Alford, Sept. 1889! W. Denison Roebuck. 
Notts. —Stanton-on-the-Wolds, Mapperley, and in a cellar, Goldsmith street, 
Nottingham, April 1878 ! also at Pleasley Vale and Carlton-on-Trent, March 1884! 
C.'T. Musson. Tuxford and Cresswell Crags, April 1885 ! W. A. Gain. 
Cheshire—Disley, 1896, Kenneth LH. Jones. 
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