=< 
406 HELICIGONA LAPICIDA. 
‘The variations in spiral banding of #his species has been hitherto greatly 
neglected, and although Dr. Westerlund includes it in his group Pauro- 
tenia, the species of which are characterized by never possessing more 
than four spiral bands, yet this is by no means fully ascertained as 
invariably the case, and we cannot therefore with safety, as yet, adopt 
a notation or for mula, as has been done so admirably with the Pentatenia. 
VARIATIONS IN FORM OF SHELL. 
Var. eearinata A. Schmidt, Moll. Norddeutschl., 1857, p. 16. 
Helix lapicida var. subangulata Pascal, Moll. Haute Loire, etc., 1873, p. 33. 
Helix lapicida var. grossularte Voith (Westerlund, Prodr. Eur. Moll., Pists, p- 88). 
SHELL with the whorls rounded at the periphery. 
This variety when characteristic is very remarkable and 
resembles Helix cornea; the rounded periphery is ascribed 
by Clessin to the deficiency of caleareous matter. 
- 
The sub-var. subangulata has the last whorl rounded, oan ae ee ; 
though slightly angulate at the periphery, and resembles the ” Bede es acs 
typical form in colouring. Mr. C. T. Musson. 
The sub-var. grossularie is described in almost identical terms. 
ENGLAND. 
Devon—On a wall, Lynton, 1890, F. J. Partridge. ; 
Sussex W.—Lavant, May 1904, Rev. W. A. Shaw. 
Suffolk W.—Recorded as ‘‘var. without keel” from Sudbury (Loudon’s Mag., 
1835, p. 580). 
Hereford—Sub-var. swbangulata, Dormington Quarries, Boycott and Bowell, 
Woolhope Nat. Field Club, 1899. 
Derby —Dovedale ! C. T. Musson. Buxton, Sept. 1900 ! F. Taylor. 
CONTINENTAL DISTRIBUTION. 
Germany—Recorded by A. Schmidt from Neuwied, Rhenish Prussia; from 
Mordingen near Freiburg, Baden, by A. Gysser; from Rédding, Schleswig, by 
Schlesch ; by Brockmeier from Westphalia; and a slightly angulate form is figured 
by Dr. Weinland from Taitelwald, Wurtemburg. 
France—Sub-var. swbangulata, on the old walls of the Tower of Roderie near 
Puy, Haute Loire (Pascal, l.c. ). 
Var. explanata Locard, Mal. Lyon., 1877, p. 27. 
Helix lapicida var. lecoguiz Moquin-Tandon, Hist. Moll. eae: 1855, vol. ii., p. 138. 
Helix lapicida var. medelpadensis Clessin, Mal. Bl., 1879, p 
Helix lapicida var. depressa Beaudouin, Mal. Chatillon sur- ES 1888, p. 396. 
SHELL flat above, and convex below the periphery. 
The var. explanata s.s., has the shell completely flat above, like H. explanata, 
and is of a somewhat yellow ish- white colour. 
The sub-var. depressa is described as possessing a very flat spire. 
The sub-var. medelpadensis is described as smaller, spire very flat, convex 
below. Diam. 17 mill. ; alt. 55 mill. 
The sub-var. leeoquii is described as smaller, flat above, less carinate and pale. 
ENGLAND. 
Monmouth—Chepstow, June 1880 ! C. T, Musson. 
CONTINENTAL DISTRIBUTION. 
Germany—Sub-var. decoguii recorded for Alsace by Meyer. 
France—Var. explanata, Lyons, Locard. Sub-var. depressa, Chatillon-sur-Seine, 
Cote @Or, Beandouin. Sub-var. lecoquii i is very common in the Haute Loire, accord- 
ing to Paseal; Moquin-Tandon records it from Wildenstein, at the foot of the 
Rotenbac, Vosges ; and Grateloup from the Auvergne. 
Switzerland—Sub-var. depressa, Lucerne, 1904, Hugh Watson. 
Sweden—Sub-var. medelpadensis, are on the slag-heaps, Galtstrém, Medelpad, 
C. G. Anderson (Mal. Bl., 1880, p. 152). 
