HELIX POMATIA. 229 
France—This form has been recorded by Lallemant and Servain from the hills 
of Charmel, Aisne; from Le Mans in the Sarthe, Verdun in the Meuse, and Paris 
by Moquin-Tandon ; from Vichy in Allier by Grateloup; from the Isére by Gras ; 
from Coursons in the Yonne, by Caziot ; as rare at La Bresse, Ain, and about 
Lyons, by Locard. 
Switzerland—Dr. Charpentier records that since 1827 thirty specime ns of var. 
contraria have been found about Bex, Canton Vaud (Moll. Suisse, 1837, p.5); while 
Dumont and Mortillet found six specimens amongst about 18,000 shells collected 
in the environs of Geneva. 
Austro-Hungary— Two specimens are in the British Museum, labelled as from 
** Vienna,” while Slavik enumerated it as having been found in Bohemia. 
Many other varieties have been described of which the descriptions or 
figures have not been available ; as vars. banatica Kain., lednicensis Bruck., 
lugarine Adami, segalaunica Sayn, poromeca Bet., ete., but these are all 
probably more or less insignificant and uninteresting. 
(Q Probable Range. GBM Recorded Distribution. 
Fic. 304.—Geographical Distribution of //elix pomatia Linné. 
Geographical Distribution.— /Heliv pomatia is one of the species 
especially distinctive of Central Europe, its natural range extending from 
South-east Russia into Eastern France, and from Denmark and South 
Sweden on the north to the Balkan Pe fipsuls on the south. 
his species has at various times been recorded from districts beyond 
the area now defined, but it is probable that such records represent the 
descendants of imported specimens, or are due to unprecise identification 
or errors of locality. 
The evolutionary area of H. pomatia is evidently the Germanic region, 
from whence it is gradually extending its range, slowly towards the west 
into France, where it is probable that many of the widely-detached locali- 
ties for this species have originated from artificially introduced examples ; 
eastwardly its advance is apparently more rapid and its course of migration 
full of interest. 
In Western Russia it is creeping steadily northward along the shores 
of the Baltic Sea, while more to the south it has penetrated almost across 
