74 



We have received this shell, as indigenous, from 

 Wales and from Scotland, but as yet must consider 

 it as a doubtful native. 



f 57. CLAUSILTA labiata. Shell ventricose, greyish- 

 white, with regular raised striae hardly interrupted 

 by the suture which is a small raised line : aper- 

 ture two-toothed with a broad white flat margin. 



Turbo labiatus. Mont. p. 362. t. II. f. 6. 

 Strombiformis perversus. Da Costa, t. 5.f. 15. 



Shell rather short and thick, with about nine volutions 

 which are hardly raised from each other, with 

 regular raised striae which are scarcely interrupted 

 by the line of junction, a thin raised line : aper- 

 ture broad oval, with a protuberance near the top 

 of the inner lip ; the margin white, spread, flat 

 and slightly reflected. 



Our specimen, the only one we have ever seen, came 

 from the cabinet of Mr. Sowerby, who expresses 

 a doubt of its ever having been found in England, 

 being a native of Malta. 



58. CLAUSILIA rugosa. Shell slender, opake, with 

 fine raised somewhat granular striae : aperture 

 with three plaits, the margin white and detached 

 all round. 



