LAND SNAILS. 
121 
in our hedges and about rocks or bills; it is cer¬ 
tainly more maritime, and lives at greater alti¬ 
tudes, than the next species, to which it is closely 
allied. 
The shell exhibits great variation in size, in 
the intensity of the colour, and in the size, dis¬ 
position, and number of the bands. A French 
conchologist, M. Moquin-Tandon, characterized 
77 varieties of this species; another author, M. 
A. Gras, has enumerated no less than 198. In 
general the varieties with five and three bands are 
the most common; next with two, with one, and 
four: the same with regard to H . kortensis. 
Helix hortensis —(the Garden Snail) (PI. 
VII., fig. 47)—is regarded by many authors as 
a permanent variety of the last species, but it 
differs in a few particulars from it. The shell 
is always smaller, usually of a lighter colour and 
thinner, with a white reflected margin around the 
aperture. It is a common species everywhere in 
our gardens and hedgerows. The two species 
are not usually found living together. In the 
neighbourhood of Hastings, and other similarly 
situated localities, I have found H. nemoralis 
along the coast-line, feeding on Ononis arvensis , 
&c., and becoming uncommon inland, where it 
is replaced by the present species. 
E. hortensis is subject also to many variations 
in colour. M. Moquin-Tandondistinguishedforty- 
