PLATE CLXXII. 



of Pennant is from the coast of Anglesea, but it is altogether 

 uncertain whether he means this species or not. — It is an elegant 

 shell, of a taper form, thin, and semitransparent ; when very per- 

 fect, of a pale flesh-colour, spirally wreathed with whitish lines, 

 and others of an ochreous or brownish hue ; the stripes are not 

 uniformly disposed alike in all specimens. Da Costa thinks the 

 species may be well distinguished by the spiral white lines. 



The smallest figures in the plate denote the natural size of this 

 shell. 



