126 HELICIDiE. 



f. 65. — Thompson, Ann. Nat. Hist. vol. vi. p. 110. — 

 Macgilliv. Moll. Abcrd. p. 97. — Brown, Illust. Conch. 



G. B. p. 36 Drap. Moll. Ter. et Fluv. France, p. 75, pi. 4, 



f. 24. — Lam. Anim. S. Vert. (ed. Desh.) vol. viii. p. 237. — 

 Sturm, Deutsch. Fauna, sect. vi. pt. 4, pi. 14. — C. Pfeif. 

 Deutsch. Land und Siissw. Moll. pt. 17, p. 50, pi. 3, f. 7. — 

 Krynicki, Bull. Soc. Nat. Moscou, vol. vi. p. 14. — Gould, 

 Invert. Massach. p. 193, f. 124. — Morelet, Moll. Portugal, 

 p. 73. 



Rulinus lubricus, Hartm. Neue Alpina, vol. i. p. 222.— Sowerbv, Conch. Manual, 

 f. 285. 



Cochlicopa lubrim, Pusso, Hist. Nat. Europe Mer. vol. iv. p. 80. 



CioneUa „ Jeffreys, Trans. Linn. Soc. vol. xvi. p. 347, 513. 



Achatina „ Menke, Synopsis Moll. ed. 2, p. 29. — Alder, Mag. Zool. 

 and Bot. vol. ii. p. 210. — Michaud, Comp. Moll. Ter. et 

 Fluv. France, p. 51. — RossmAssl. Iconog. Land und Siissw. 

 Moll. vol. i. p. 88, f. 43. — Brumati, Monfalcone, p. 30. — 

 Philippi, Moll. Sicil. vol. ii. p. 115. 



Columna „ Jan, Catal. p. 5. 



Slylvides luhricus, Fitzing. Syst. Verz. p. 105. 



Zua lulrica, Gray, Manual L. and F. W. Shells, p. 188, pi. 6, f. 65. 



Shell elongated oblong, the lower portion (extremity 

 excepted) subcylindrical, the upper portion rather slowly 

 tapering to a very blunt and depressed apex ; rather thin, 

 smooth, highly polished, transparent, wholly of a brownish 

 umber, or of a smoky horn-colour (more rarely greenish 

 white). Whorls six, regularly convex, or even a little 

 rounded, of not very rapid increase, divided by a fine 

 yet distinct and moderately slanting suture ; penult turn 

 rarely twice as broad as high, quite as broad, and rather 

 large in proportion to the body, which fills about three- 

 sevenths only of the dorsal length, is narrow, not at all 

 ventricose, has a gradual convex basal declination, and 

 tapers early to a bluntly rounded extremity. Mouth 

 small, only filling about a fifth of the ventral area, and 

 scarcely a third of the total length ; of a somewhat 

 lanceolate-oval form, being acutely angulated above, de- 

 void of sculpture. Outer lip regularly arcuated, but little 



