86 THEBA CANTIANA. 
VARIATIONS OF FORM OF SHELL. 
Var. pyramidata Colb., Bull. Soc. Mal. Belg., 1867, p.Ixxxvi. & 1868, pl.11. 
Helix abchaia Mabille, Guide de Natural, 1880. 
Helix cantiana var. elevata Williams, Conchologist, vol. i., p. 16, 1891. 
SHELL of a somewhat pyramidal form. 
The sub-var. elevata is smaller than the type, with 
the spire distinctly elevated above the body-whorl ; suture 
deep. Diam., 12 mill. ; alt., 8°5 mill. 
The sub-var. abehaia has a conically-elevated spire, 
body whorl tumid and large, indistinetly angulate, and of 
a horn colour. Diam., 16 Pmill.; alt. 9 mill. Fic iat) canteeee 
ENGLAND. pyramidata Colbeau (after 
bourne, collected — Colbeav- 
Kent W. 
by Mr. J. R. Longhurst (Williams, l.c.). 
Kent E.—Var. pyramidata, Maidstone, collected by Mr. H. Lamb. 
Northampton—Var. pyramidata, Towcester, 1893, found by Mr. L. E. Adams. 
Lincoln N.—Var. pyramidata, Bardney, Dee. 1905, J. F. Musham. 
York Mid W.—Var. pyramidata, Boston Spa, found by Mr. J. Emmet. 
CONTINENTAL DISTRIBUTION. 
Belgium—Var. pyramidata, Ostend, West Flanders (Colbean, l.c.). 
France—Grasse, Alpes Maritimes, 1904, Hugh Watson. 
Italy —Sub-var. abchaia Mabille is recorded from Bastia, Corsica, by Westerlund. 
Var. da campi Villa. 
Helix da campi Villa, Catal. Sinom. Moll., 1861, p. 7. 
Theba cantiana var. depressa Taylor in sched. 
Helix cantiana v. campanica Paulucci, Bull. Soc. Mal. Ital., 1881, vii., p. 87, pl. 2, f. 1. 
Helix sobara (Bourg.), Mabille, Bull. Sine Philom., Paris, 1881. 
Helix apuanica Mabille, Bull. ’Soc. Philom., Paris, 1881. 
Helix ardesa (Bourg.), Mabille, Bull. Soc. Philom., Paris, 1881. 
The var. da campi is a larger, depressed form, 
usually white in colour. 
The sub-var. eampaniea is described as more 
widely umbilicated, spire more depressed, body whorl 
widened. , aoe Fic. 128.—Helix campanica 
The sub-var. depressa ISPaVeLy; similar, but of Paulucci, slightly reduced (after 
typical colouring. Paulucci). 
The sub-var. sobara is depressed, very little swollen, and moderately umbili- 
cated, of a whitish colour, but tinged beneath with yellowish, diam., 19-20 mill. 
Its depressed spire probably most closely allies it with the var. da campi. 
The sub-var. ardesa is depressed in shape and very slightly swollen, of a whitish 
colour, tinged with a rosy shade and microscopically striate. Diam. 18; alt., 16 mill. 
The sub-var. apuaniea is depressed and very slightly swollen, of a dull-yellowish 
horn colour, the last whorl rapidly increasing in size, but not deflected. Diam., 17- 
18 mill. ; alt. 8-9 mill. 
Signor Tommasi records that at Castellgoffredo and other places in Lombardy 
H. da campi is often found paired with H. galloprovincialis, but prefers moderately 
moist grassy fields and shady positions. He also transplanted young H. gallopro- 
vincialis into moist and shady meadows, and after some years found that the shells 
had become smaller and moderately transparent, and presented the characters of 
H. da campi Villa. 
ENGLAND. 
Lincoln S.—Sub-var. depressa, Boultham, Nov. 1905! J. F. Musham. 
CONTINENTAL DISTRIBUTION. 
France—A mutation of Helix d’anconw with an almost flat spire and the last 
whorl undeflected is recorded by Comm. Caziot from the spring at Mourailles near 
Nice, Alpes Maritimes. 
Italy—Var. da campi, Mantua and shores of Lake Como, Lombardy, and from 
Verona, Venetia, by Dr. E. von Martens; also from the Parmese Appenines, Emilia, 
by Strobel. 
