62 HELICODONTA OBVOLUTA. 
Dr. Hartmann states that in Sturm’s Fauna he named the dwarf form Helix 
parvula, but apparently did not deseribe it. 
CONTINENTAL DISTRIBUTION. 
Germany—Dr. Hartmann records his var. parvula from Neuwied, Rhenish 
Prussia; and Dr. Sandberger records ‘‘small” specimens as very rare in the Lower 
Pleistocene sands of Mosbach, Baden. 
Belgium—Extremely small shells recorded by Roffizen from Dinant, Namur. 
France—Recorded by Locard from the mountains of Parves near Belley, Ain ; 
by Wattebled from Bois de Ternant and Bois St. Jean-de-Boeuf, Cote d’Or ; and by 
Comm. Caziot from the Alpes Maritimes at the Col des Quatre Chemins near Nice, 
from beneath pine trees at Cannes, and on the road to Pegomas. 
Switzerland—Dr. Hartmann has found his var. parvula at St. Gallen and St. 
Gallencappel ; Bollinger recorded specimens 9 mill. in diameter from Atlschwiler 
Wald, Canton Basel ; Prof. Studer discovered it near Berne, and Comm. Caziot 
records specimens from the same place 9 mill. in diameter and 44 mill. in altitude. 
Monstr. sinistrorsum Adams, Manual of British Shells, 1896, p. 59. 
SHELL reversed. 
The only known shell, which is now in the collection of Mr. J. R. le B. Tomlin, 
was purchased many years ago by Mr. W. H. Heathcote, of Preston, at a sale of 
shells at Messrs. Stevens’ Auction Rooms, London. The shell is not quite mature, 
has about 54 whorls, and has not formed the adult aperture. 
It is stated to have been found in Ditcham Wood, Hampshire. 
Moustr. sealare Grateloup, Cat., p. 54, 1855. 
Whorls more or less dislocated. 
CONTINENTAL DISTRIBUTION. 
France—Recorded from North France by Dr. Grateloup. 
Fic. 92.—Geographical Distribution of Helicodonta obvoluta (Miill.). 
Probable Range eat Recorded Distribution 
Geographical Distribution. — Dispersed throughout Middle and 
Southern Europe, in moist and cool places, and usually though not invari- 
ably in mountain regions, but is most plentiful in the south, but according 
to Comm. Caziot never found in the immediate vicinity of the sea. 
In England it oceurs only on the South Downs of Sussex and Hampshire, 
and is apparently curiously restricted to an area about forty miles in length 
and six miles in width. It has also been recorded from Kent, but this 
record appears to have been due to error or oversight. 
