HELIX. 77 



H. FuscA, Montagu. 



Depressed subglobular, almost imperforated, not minute, trans- 

 parent, umber-colourcd, wrinkled ; outer lip acute. 



Plate CXIX. fig. 4, 5, and (Animal) Plate G.G.G. fig. 4. 



lldUfiixa, Mont. Test. Brit. p. 424, pi. 13, f. 1. — Maton and Rack. Trans. 

 Linn. Soc. vol. viii. p. 209. — Turt. Conch. Diction, p. 61. — 



Fleming, Brit. Anim. p. 264 .Teffrevs, Trans. Linn. Soc. 



vol. xvi, p. 331, 391, 507.— Turt. Manual L. and F. W. Shells, 

 f. 36.— Gray, Manual L.and F. W. Shells, p. 147, pi. 4, f. 36.— 

 Thompson, Ann. Nat. Hist. vol. vi. p. 24. — Brown, Illust. 

 Conch. G. B. p. 47, pi. 17, f. 25, 26.— Wood, Index Testae, 

 pi. 34, f. 132. — L. Pfeif. Synib. Helic. pt. 2, p. 28.~Chemn. 

 (ed. KUst.) Conch. Cab. Helix, no. 204, pi. 29, f. 17, 18, 19.— 

 L. Pfeif. Monog. Helic. vol. i. p. 33. 

 „ subrufescens. Miller, Ann. Phil. New Series, vol. iii. (1822) p. 379 (fide 

 Gray). — Fleming, Brit. Animals, p. 259 (from jNIillcr). 



Zvnitesfuscus, Macgilliv. Moll. Aberd. p. 93. 



Shell rather small, extremely thin, almost membranaceous, 

 of an uniform shining- and transparent amber colour, not 

 opaque underneath, of a depressed subglobose shape, adorned 

 with longitudinal foldlike wrinkles. Spire a little elevated; 

 apex rather blunt. Whorls five, convex, rapidly enlarging; 

 the last swollen, obscurely subangulated at the circumfer- 

 ence, not deflected. Aperture rather large, crescent-shaped, 

 decidedly broader than high, more than equal in width to 

 half the total diameter, occupying half at least of the entire 

 length. Peristome arcuated above and below, thin, sim- 

 ple, not reflected, except upon the short and somewhat 

 perpendicular columella. Base rounded, not distinctly 

 performed. 



Diameter scarcely three-eighths of an inch. 



The animal is pale yellowish grey, with bluish tentacles ; 

 a pale dusky line runs from each tentacle on the neck, 

 but soon fades. There is a bluish pur[)le line across the 



