114 helicid^:. 



BALEA, Prideaux. 



Shell spiral, produced, many-whorled, elongated, resem- 

 bling a Clausilia, but having no elausium ; mouth ovate 

 or sub-pyriform, plicated, usually with one imperfect 

 fold ; its margins unequal ; columella simple or plicated. 



Animal closely resembling that of Bulimus. 



The species of this genus are intermediate in aspect 

 between Pupa and Clausilia. From the former they 

 differ in the unequal margins of the mouth. They are few 

 in number, and very dissimilar in aspect. 



B. fragilis, Draparnaud. 



Plate CXXVIII. fig. 8, 9. 



Turbo perversus, Linn. Syst. Nat. ed. 12, p. 1240. — Penn. Brit. Zool. ed. 4. 

 vol. iv. p. 130, pi. 82, f. 116. — Mont. Test. Brit. p. 355, 

 pi. 11, f. 12; Suppl. p. 131. — Maton and Rack. Trans. Linn. 

 Soc. vol. viii. p. 181, pi. 5, f. 2. — Rack. Dorset Catalog, p. 51, 

 pi. 19, f. 11.— Turt. Conch. Diction, p. 226. 

 Bulimus „ Poiret, Prodr. p. 57. 



Pupa fragilis, Drap. Moll. Ter. et Fluv. France, p. 68, pi. 4, f. 4. — C. Pfeif. 

 Dcutsch. Land und SUssw. Moll. pt. 1, p. 56, pi. 3, f. 16. — 

 Lam. Anirn. s. Vert. (ed. Desh.) vol. viii. p. 178. — Nills. 

 Moll. Sueciae Ter. et Fluv. p. 48. — Desh. Encycl. Meth. Vers, 

 vol. ii. p. 406. — Morelet, Moll. Portugal, p. 74. 

 Clausilia parvula, Gart. Conch. Wett. p. 22. 



„ fragilis, Stud. Verz. Schweiz. Conch, p. 20. — Jeffreys, Trans. Linn. 

 Soc. vol. xvi. p. 351. — Hartm. Neue Alpina, vol. i. p. 215. 

 — Sturm, Deutsch. Fauna, sect. 6, pt. 7, pi. 1. — C. Pfeif. 

 Dcutsch. L. and S. Moll. pt. 3, p. 62. 

 Odosiomia perversa, Fleming, Encycl. Edin. vol. vii. pt. 1, p. 76. 

 Balea fragilis, Gray, Zool. Journ. vol. i. p. 61. — Sowerby, Conch. Manual, 

 f. 296. — Rossmassl. Iconog. Land und Sussw. Moll. pt. 10, 

 p. 24, f. 636. 

 „ pai-crsa, Fleming, Brit. Anim. p. 271. — Macglli V. p. 1 04. — Philippi, 

 Moll. Sicil. vol. ii. p. 220. — L. Pfeif. Monog. Helic. vol. ii. 

 p. 387. 

 „ fragilis, Alder, Trans. Nat. II. Soc. Northumb. vol. i. — Turt. Manual L. 

 and F. W. Shells, p. 87, f. 70.— Brown, 111. Conch. <J. B. p. 37. 



