20 



tongue (Unguium spatulatam). Operculum squamose, 

 furnished on the upper side with small testaceous parts 

 or valves, from five to nine in number, the middle one 

 dentated at the truncated part of its summit, the others 

 a little toothed on their internal margin; the whole of 

 them attached to the edge of the operculum on one 

 side only. 



Galeolaria coespitosa Galeolaria elongata. 



*$* — 



17 W%t MAGILUS, 



This most singular shell, which might easily be mis- 

 taken for a petrified body, is composed of a testaceous, 

 white substance, resembling semi-transparent alabaster ; 

 the base of it turned round into a short solid oval spire, 

 with about four contiguous whorls, resembling a Helix ; 

 thelast and larger one prolonged in an irregularly un- 

 dulated, or nearly straight direction, sometimes to the 

 length of several feet: the upper exterior part of the 

 tube is convex, the lower side flattened, plaited, carinat- 

 ed, and somewhat angular, with closely set, waved, la- 

 mellar plaits, much thicker on one side than the other; 

 the interior rounded, smooth, and its lower part with 

 a groove corresponding to the external keel 



