COLIMACEA. 05 



what longer than broad ; outer hp thin, shghtly reflected at the 

 lower angle ; whole surface covered with longitudinal, wrinkled 

 striai ; umbilicus large and deep. Diameter frequently nearly 

 three-quarters of an inch. Its general dimensions smaller. 



The young of this shell is destitute of hairs. 



This species is hable to some variations in colour. 



13. Helix limbata, pi. VII, f. 16, 17. 



Helix limhata, Drapernaud, p. 100, pi. 6, f. 29 ; Ferussac, 

 Prod., p. 43 ; Michaud, Compl., p. 24 ; Rossmassler, Icon., V, 

 p. 35, pi. 26, f. 362 ; Alder, Mag. Zool. and Bot., II, p. 106; 

 Brown, Illust. Conch., p. 46, pi. 18, f. 29, 30. 



Shell suborbicular, of a white or reddish colour ; body large, 

 with an opaque, slight carina round its centre ; spire about a 

 third of the length of the body, consisting of four somewhat 

 narrow, slightly inflated and subdepressed volutions, terminating 

 in a rather obtuse apex ; aperture sublunate, very oblique, and 

 slightly narrowed in the centre of the outer lip, which is thin, 

 plain, slightly reflexed, and margined with white ; pillar lip a 

 little reflexed over the umbilicus, which is rather small and 

 narrow; whole surface very finely striated. Length nearly half 

 an inch ; diameter upwards of half an inch. 



This species is subject to considerably variety in colour; being 

 sometimes reddish-brown, and at others of a clear white. 



Discovered by Mr. G. B. Sowerby on the New North Road 

 to Barnet, near Hampstead, in a hedge row, and attached to 

 brambles. The H. limbata is a native of France, Switzerland, 

 and Germany, and has in all probability been an introduced 

 species, as the above is the only locality where it has hitherto 

 been noticed in Britain. 



14. Helix fulva, pi. VII, f. 18. 



Helix fulva, Miiller, Verm. Hist., II, p. 56, No. 249 ; Dra- 

 pernaud, p. 81, pi. 7, f. 12, 13; Pfeiffer, I, p. 23, pi. 2, f. 2; 

 Turton, Man., p. 61, f. 47; Alder, Mag. Zool. and Bot., II, p. 

 108; Thompson, Ann. and Mag. Nat. Hist., VI, p. 25; Helix 

 trochiformis, Montagu, Test. Brit., p. 427, ph 11, f. 9; Turton, 

 Brit. Fau., p. 189; Fleming, Edin. Ency., VII, p. 80; Maton 

 and Rackett, Linn. Tr., VIII, p. 200; Jeffreys, Linn. Tr., XVI, 

 p. 331; Helix Trochihis, Fleming, Brit. An., p. 260 ; Brown, 

 Ency. Brit., 6th Ed., VI, p. 458 ; Tehafidva, Leach, Moll., p. 

 K 



