, 
384 HELIX PISANA. 
Portugal—Var. minor, rather common almost everywhere (Locard, le.) ; and 
sub-var. thusurosi, Cascaes (Letourn. & Boure., |.c.). 
Algeria—Sprinkled about throughout Algeria ; and sub-var. sardoa, Algiers and 
Oran (Bourguignat, l.e.); also Hussein Dey near Algiers ! A. Shaw. 
Tunis—Var. minor, rather common, Khroumirie, P. Germain. Sub-var. thusu- 
rosi, environs of Tozer (Let. & Boure., op. cit.). Sub-var. subslanata, shores of 
Camerata, near Beni-Saf (Germain, l.c.). 
Syria—Sub-var. thusurosi, Beyrout (Let. & Bourg., op. cit.). 
Var. dentata 'T'aylor, var. nov. (Monoer., pl. xxx., f. 5). 
SHELL with a distinet tubercle on the parietal wall. 
This is a very remarkable shell, reproducing in adult life the parietal denticle 
temporarily characterizing the juvenile form named Helix catocyphia ly Bourgui- 
enat, and linking the species with H. suwhdentata. 
FOREIGN DISTRIBUTION. 
Morocco —Mogador, collected by Lieut.-Col. Parry ! G. Kk. Gude. 
VARIATIONS IN COLOUR OF SHELL. 
Var. alba Moquin-Tandon. 
Helix pisana var. aloa Moquin-Tan lon, Hist. Moll., 185d, ii., p. 260. 
Helix pisana var. albina Grateloup, Catal. Moll. Fr., 1853, p. 9. 
Heltx pisana var. albinos Bourguignat, Mal. Alger., 1864, i., p. 237. 
tHelix pisana omnino alba \allemant, Mal. Alg., 1868, p. 37. 
SHELL pure white, without transparent banding. 
The sub-vars. albinos Bourg. and omnino alba 
Lallemant are uniformly white. 
Thesub-var. bertini is an albine form of somewhat 
globose shape, witha moderately elevated spire. Dian. 
20 mill. ; alt. 15 mill. 
ay ee Rome. Saye ae Smvenan Fic. 434.—Helix pETag sub- 
The var. alba of Jeffreys incindes the translucent  y.. 70 cf Loc, Reve wee 
banded variety (diaphana), and also confuses together (Coll. Mus, Hise ERPs 
the var. al/bida with the unbanded albine form. 
ENGLAND AND WALES. 
Channel Isles—St. venient Bay, Jersey, Sept. 1911! W. Cash. Guernsey, at 
3ordeaux Harbour, 1887, J. R. le Brockton Tomlin; Greve d’Azette, June 1905 ! 
Fk. H. Sikes. Vazon Bay and St. Sampson Bay ! J. E. Cooper. 
peo W. —Specimens in the British Museum, labelled ‘*//. pisana var., 
Falmouth,” T. D. A. Cockerell. 
ir eee Ai rare, South Cliff beneath mass in Jubilee Gardens, 
and on railway-bank, beyond the Wreck-field (Stubbs, J. of Conch., vol. ix., p. 327) 
: IRELAND. 
Louth —Drogheda and Clogher, Sept. 1904 ! P. H. Grierson. 
Meath—Julianstown, June 1904 ! Dr. R. EF. Sehartf. 
Dublin —Common on sandhills, Rush, Sept. 1885 ! J. R. Redding. 
FOREIGN DISTRIBUTION. 
France—Recorded from Mentone, Alpes Maritimes, by A. G. Stubbs; from 
Chaussey Isles, Manche, by F. H. Sikes ; from near Brest, Finistere, by I’. Daniel; 
from Montpellier, Lunel, Séziers, and Lodéve, Hérault, by Dubrueil; from Prairies 
du Vistre, Gard, by C lement ; with a sub-pellucid shell from Quibéron and Belle-ile, 
Morbihan, by M: abille ; Bonleane. Gironde, by Dr. Scharff; and from Corsica by 
Dr. Grateloup. A specimen of a form labelled H. bertini Locard, from Rians, Var, 
is in the Muséum d’Histoire Naturelle, Paris. 
Italy —Genoa, Liguria! Civita Vecchia, Rome ; and Girgenti, Sicily ! G. K. Gude. 
Spain —Galicia, Dr. Macho; San Sebastian, Basque Provinces ! Prof.J.G. Hidalgo. 
Morocco —Reported from Moroeco by Mr. J. H. Ponsonby ; and also mentioned 
by M. Pallary, who attributes its oceurrence in Morocco to excess of humidity. 
Algeria—Var. a/binos recorded from Oran, Mostaghenem, Algiers, Bone, ete. 
Egypt—Suez ! P. Dautzenberg. 
Syria—Jaffa, March 1904 ! F. H. Sikes. 
