HELICODONTA OBVOLUTA. 61 
Var. pallida Moquin-'andon, Hist. Moll. France, 1855, i1., p. 114. 
SHELL thinner, more transparent, and of yellowish-rufous colour, with a more 
velvety surface. 
The shells from Provence described by Dupuy as thinner, nearly pellucid, and 
of a velvety aspect, owing to the more numerous and more recumbent hairs, would 
appear to belong to this variety, and are probably the form he discriminated as 
var. pyrencica. 
CONTINENTAL DISTRIBUTION. 
France—Rather common in Haute Loire according to Pascal; Locard cites it as 
rare about Lyons, Rhone, and as rather rare at Haut-Bugey, Hauteville, Ain. 
Var. dentata Clessin, Exc. Moll. Fauna, 1884, p. 133. 
Helix blanci Pollonera, Atti Soc. Italiana Sc. Nat.. 1884. 
Helix spinelliana Pollonera, Agg. Mal. terr. del. Piemonte, 1886. 
The apertural projections more distinet and prominent. 
The sub-var. blanei, of which H. spinelliana is asynonym, ‘‘differs from typical 
obvoluta in the more distinctly trilobed aperture, which is more outwardly prolonged 
at its lower external angle, by the basal margin being more strongly calcified interi- 
orly and nearly concave exteriorly, and also by the deeper external depressions at 
the termination of the last whorl corresponding to the two apertural teeth.” The 
most striking peculiarity is perhaps the somewhat rectangular callosity or denticle 
on the convex inner basal margin. 
Fic. 90. Fic. 91. 
Fic. 90.—H. obvoluta sub-var. d/anci Pollonera, from Bassano, Venetia, slightly reduced. 
Fic. 91.—H. odvoluta var. dentata Held, from Weimar (after Sandberger). 
ENGLAND. 
Hants. S.—Var. dentata, Ditcham Wood near Petersfield (C. S. Coles). 
CONTINENTAL DISTRIBUTION. 
Germany—Recorded from Nassau and Pappenheim, Wurzburg, and Eichstadt, 
Bavaria, by Kobelt and Sandberger ; by Boettger from Clauswald and the ruins of 
Bodenlaube, Kissingen, Franconia ; and by Sandberger from the Suabian Alps. 
Sandberger records and figures it from Weimar in calcareous tufa of Upper 
Pleistocene age. 
Italy—Prof. Pollonera reports sub-var. b/anci, Piedmont ; Bassano and Schio, 
Venetia; and Arona, Lombardy. 
Austro-Hungary—Luttach, Tyrol (in Coll. Sikes, Brit. Mus.). The sub-var. 
blanci, Carniola (Prof. Pollonera). 
Var. major Locard, Moll. Ain, 1881, p. 35. 
SHELL larger. 
The var. Major s.s. is described as ‘‘ shell of large size and of a paler colour.” 
- oe ENGLAND. 
Hants. S.—Mr. H. Beeston has found a specimen in Ditcham Wood, 14 mill. in 
diameter. 
CONTINENTAL DISTRIBUTION. 
France—Locard records this variety as rather common at Miribel, Ain; and 
Wattebled from Bois de Ternant and Bois St. Jean-de-Beeuf, Cote d’Or. 
M. Charpentier has observed that the shells from Provence attain a larger size 
than those living in the north. 
Switzerland—Specimens 13 mill. in diameter from Balstal, Canton Basel, are 
recorded by Bollinger. 
Var. parvula Hartmann, Gaster. Schweiz., 1840, p. 16. 
Helix obvoluta var. minor Locard, Moll. Ain, 1881, p. 35, 
SHELL smaller; 8 mill. in diameter and 4 mill. in altitude. 
The sub-var. minor Locard is described as ‘‘shell small, less than 10 mill. diam., 
of a darker colour, with close and rather long hairs,” The sub-var. minor of Caziot 
as 10 mill. in diameter and 4# mill. in altitude, 
