HELIX. 131 



— Fruticola cartbusianella. Held. Isis, 1837, 914. — Brady- 



bsena cai'thu^iana. Beck, Ind. 19. 

 Var. smaller, rather more convex. 

 Var. thinner, t. 11. f. 27*. : Helix ru6Iabris. Jeffreys, Linn. 



Trans, xvi. 509. 



On stunted grass, on the Downs in the chalky 

 districts of Kent and Sussex, near the sea. {Mr. 

 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, w^ithout j^- gg 

 the rufous stain about the mouth and 

 underneath; aperture more narrowed; ^^i^ 

 and the umbilicus very minute ; on the 

 outside of the aperture is a milk-wliite 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. 



K 2 



