179 



D. p. 21-9. Rather slender, pointed, white, quite 

 smooth; whorls six, much swollen, divided by a very 

 broad and deep band, which is flat at the bottom or 

 concave in a slight degree and not angular as in most 

 other shells, giving the whorls the appearance of being 

 disunited ; aperture suborbicular, pillar lip reflected 

 with a perforation behind it. 0,20... 0,07. Scotland, 

 rare. 



** Outer lip not thickened by a rib. 



C. LABIOSA. P.p. 307. TURBO L. Mont. p. 400. 

 t. 13./ 7. Lin. T.S.p. 164. Dor. Cat. p. 149.*. 

 18. /. 16. D.p. 840. T. MEMBRANACEUS. Adams, 

 in Lin. T. 5. p. 2. t. 1. /. 14,5. Turt. D.p. 203. 



Somewhat conic, tapering to rather a fine point, pale 

 horn-colored, sometimes with oblique obscure brown 

 lines, semitransparent, usually purple at the tip ; 

 whorls six or seven, slightly rounded, well defined, 

 with from fifteen to eighteen longitudinal more or less 

 distinct and rounded ribs on the two last but one 

 volutions, and on the upper part of the body whorl, 

 smooth elsewhere ; mouth glossy, oval, dilated, equal to 

 half the length of the shell, rounded below; lip ex- 

 panded, thin, a little reflected ; pillar lip spread ; 

 columella within undulated and forming a slight eleva- 

 tion, i . , , 0,08. Common, 



