I'LANOIIBIS. M9 



P. ALBUs, MuUer. 



Small, rather depressed, slightly convex on both disks, whorls 

 with decussating striae, and pilose. 



Phite CXXVI. tig. 1, •-'. 



riaiiorbis ulOus, Ml'llek, Hist. Verm. pt. 2, p. 164. — Jeffreys, Trans. Linn. 



Soc. vol. xvi. p. 387. — Fleming, Brit. Anim. p. 279. — Turt. 



Manual L. and F. W. Shells, p. 114, f. 97. — Gray, Manual 



L. and F- W. Shells, p. 259, pi. 8, f. l.<)7.— Macgilliv. Moll. 



Aberd. p. 119. — BroWiV, Illust. Conch. G. B. p. 31, pi. 14, 



f. 52, 53. — C. Pfeif. Deutsch. Land und Sii-sw. Moll. pt. 1, 



p. 80, pi. 4, f. 9, 10. — Dupi Y, Moll. Gers, p. 47. — Stein, 



Schnecken Berlins, pi. 2, f. 23. 



HelLv ulba, Mont. Test. Brit. p. 459, pi. 25, f. 7. — Maton and Rack. Trans. 



Linn. Soc. vol. viii. p. 192.— Dorset Catalog, p. 53, pi. 19, f. 18. — 



Turt. Conch. Diction, p. 48. — Dii.lw. Recent Shells, vol. ii. p. 909. 



Fluiwrhis luipidus, Drap. I\Io11. Ter. et Fluv. France, p. 43, pi. 1, f. 45 to 48. — • 



Braud, Coq. Paris, p. 159, pi. 6, f. 6, 7. — Voith in 



Sturm. Deutsch. Fauna, pt. 4, pi. 5. — Lam. Anim. s. Vert. 



(ed. Desh.) vol. viii. p. 387. — Nils. Moll. Suecite Ter. et 



Fluv. p. 75. — KicKX, Moll. Brabant. Austral, p. Gi. — 



Gras, Moll. Ter. et Fluv. France, p. 57, pi. 4, f. 32. — 



Mermet, Moll. Pyren. p. ^^. 



„ hirsutus, Gould, Invert. Massach. p. 20G, f. 135 ? 



(lyrauhts fiispidiis, Hartm. Erd und Sussw. Gaster. pi. 25. 



Shell small, pule horn-coloured, rather depressed (about 

 thrice as broad as high), very thin, not much polished. 

 Upper disk flattish, slightly sunk, quite in the centre ; 

 concavity of lower disk more extended, not profound. 

 Whorls four or five, deeply divided, simply and moderately 

 rounded, of tolerably fast increase, not peculiarly narrow, 

 adorned with fine close-set raised spiral lines that are 

 decussated by still finer and more crowded spiral ones, and 

 are clothed, when recent, with a deciduous pile. Body 

 decidedly broader than high, about equally wide on either 

 disk ; its slopes nearly equal ; rather narrowly rounded at 

 the periphery, at times assuming a subcarinated appearance 



