HELIX. 
131 
— Fruticola carthusianella. Held, Zsw, 1837, 914. — Brady- 
basna carthusiana. JBeck^ Ind, 19. 
Var. smaller, rather more convex. 
Var. thinner, t. 11. f. 27*. : Helix rufilabris. Jeffreys,, Linn, 
Trans, xvi. 509. 
On stunted grass, on the Downs in the chalky 
districts of Kent and Sussex, near the sea. (iHr. 
Gibbs, 1814.) 
Animal grey above, yellowish below; tentacles 
long, flexible. 
Shell not half an inch in diameter, more depressed 
than the last, and not so glossy, without 
the rufous stain about the mouth and 
underneath; aperture more narrowed; 
and the umbilicus very minute ; on the 
outside of the aperture is a milk-white transverse 
band. (fig. 36.) 
This species varies considerably in size, in the 
thickness and the opacity of the shell, and in the 
distinctness of the double band round the mouth, 
the white band being most indistinct in the thinner 
specimens. 
Mr. Jeffreys thinks it probable that this species 
had been introduced from France {Linn. Trans. 
509.) ; but 1 have seen it quite as common as H. 
virgata for many miles of the south coast of England, 
from Dover to Portsmouth ; and it must have been 
introduced, if at all, some years ago, as it was dis- 
covered by Mr. Gibbs in 1814, and is now very 
generally distributed in the neighbourhood of the 
sea coast, like many other Helices allied to it, which 
are believed to be natives. 
Fig, 36 . 
