HELIX. 67 



Trans. Linn. Soc. vol. xvi. p. 337. — Turt. Manual L. and 

 F. W. Shells, p. 37, f. 28. — Gray, Manual L. and F. W. 

 Shells, p. 156, pi. 3, f. 28. — Brown, Must. Conch. G. B. 

 p. 46, pi. 17, f. 47, 53. — Chemn. (ed. Klist.) Conch. Cab. 

 Helix, No. 87, pi. 16, f. 13 to 16.— L. Pfeif. Monog. Helic. 

 vol. i. p. 141. 

 ■IIiUj: (ttrturain, Gmelin, Syst. Nat. 

 „ Altenana, Klees, Test. Tubing, (teste Ferus.) 

 „ corrugata and dandestina, W. Hartm. in Neue Alpina, i. p. 256. 

 „ circinata, Studer, Verz. Schweiz. Conch, p. 12. — Ferus. Prodrom. Moll, 

 No. 268. — Rossmassl. Iconog. Land und Siissvvas. Moll, 

 pt. 1, p. 63, f. 12 a; and pt. 7, f. 422. 

 „ montana, C. Pfeif. Deutsch. Land und Siisswas. Moll. pt. 3, p. 33, pi. 6, 

 f. 10. — Charpent. N. Denks. Schweiz. Ges. Nat. vol. i. 

 (1837), p. 11, pi. 1, f. 17 (Helicella). 

 FruUcola circinata, Held, Isis, 1837, p. 914. 



Bradybaena rufescens and circinata, Beck, Index Moll. Mus. Christ. Frid. p. 20. 

 Trichia circinata dandestina, Hartm. Erd und Siisswas. Gast. 1, p. 125, pi. 38. 

 ar. Helix ccelata, Studer, Schweiz. Conch. — Charpent. N. Denks. Schweiz. 

 Ges. Nat. vol. i. (1837), p. 11, pi. 1, f. 13.— Desh. Encycl. 

 Mtth. Vers, vol. ii. p. 219. 

 Bradybcena ccelata, Beck, Index Moll. Mus. Christ. Frid. p. 20. 

 „ Helix montana, Studer, Verz. Schweiz. Conch, p. 12. 



„ striolata, C. Pfeif. Deutsch. Land und Siisswas. Moll. pt. 3, p. 28, 



pi. 6, f. 8. 

 „ circinata var. montana, Rossmassl. Iconog. Land und Siisswas. Moll. 



pt. 1, p. 63, f. 126, and pt. 7, f. 423. 

 „ rufina, Parreys in Pfeif. Symbols, pt. i. p. 39. 

 „ „ Parreysii, Fitzinger, Verz. Erzh. Weichth. 



Shell depressed, never hispid, rather thin, and a little 

 translucent, coarsely striated lengthways, rather dull, in 

 general of a reddish horn-colour, hut ranging in tint from 

 almost white to rufous brown, colouring usually disposed 

 in alternate darker and lighter shades, subcarinated upon 

 or above the middle, the angulation rendered more appa- 

 rent by being of a paler tint. Spire (in the more typical 

 form) scarcely raised ; apex not particularly blunt. 

 Whorls six, moderately convex, not abruptly enlarging ; 

 the last neither deflected above, nor sinking at its termina- 

 tion below the general level of the base. Aperture nearly 

 crescent-shaped, broader than high, about equal in breadth 



