42 VITRINIDA. 
It has been thought that this species was imported in 
foreign mould to nursery gardens at Bristol, but this is 
now considered erroneous, its claim to rank as an 
indigenous species having been fairly established by its 
occurrence over a large district in the south-west of 
England and Wales, in Yorkshire, Berks., and Middlesex, 
and also in the south of Ireland and in Jersey. 
Var. viridans (Morelet). Greenish brown, lke 
bronze ; ventral dise bright orange-red. 
Family.—VITRINID&. 
Genus.—VITRINA Draparnaud. 
Body incapable of being contained within the shell; mantle ex- 
panded over the lip of the shell when the animal is in motion ; Ze7- 
tacles 4; shell globular, thin, transparent ; sfzve very short ; mouth 
obliquely semi-lunar 3 zevzbz/ecus none. 
V. PELLUCIDA (transparent) Miller. PA. II., f. 4. 
Spheroidal, very thin, transparent, green; sfzve scarcely raised; 
mouth large; A. 34mm. B. 64mm. 
The Vitrinas are a link between the slugs and snails 
proper. They have the same tooth formation and mantle 
as the slugs, while their shells resemble those of the 
Flelices. 
Our pretty little English species is found in almost all 
parts of the British Isles. This shell, like a bubble of 
clear greenish-tinted glass, is a truly beautiful object, 
especially when set out on white cardboard or with a 
background of cotton wool. Two varieties are found, 
