CERITHIUM. 141 



C. MUTABILE, C. B. Adams. PI. 26, fig. 7. 



Whorls convex, with a narrow shoulder under the suture, sculp- 

 ture very faint, showing under the glass minute granulations and 

 striae, spirally disposed ; white, variegated and blotched with chest- 

 nut, sometimes wholly chestnut ; aperture large, the outer lip well 

 rounded, thin. Length, 9 mill. 



Salt Lakes, Bahamas. 



C. CRASSILABRUM, Krauss. PI. 27, fig. 17a. 



Whitish, spotted and dotted with chestnut, ribbed, angulated 

 above the middle of the whorls, with beaded spiral striae ; outer lip 

 slightly expanded, crenulated, spotted. Length, 12 mill. 



^ape of Good Hope. 



C. SEROTINUM, A. Ad. PL 27, figs. 19, 20. 



Whitish or pale brownish, longitudinally closely plicated, spirally 

 striated, whorls ventricose in the middle, body w r horl truncate 

 below, canal contracted, short, columellar lip free. 



Length, 12-18 mill. 



Van Dieman's Land 



C. rhodostoma, A. Ad. (fig. 20), is a synonym. 



C. PAUXILLUM, A. Ad. PI. 34, fig. 95. 



Subcylindrical, pale fulvous, longitudinally plaited and spirally 

 ribbed, the intersections nodulous, suture deep. Length, 9 mill. 



Philippines. 



Section COLINA, H. and A. Adams, 1853. 



C. PINGUE, A. Ad. PI. 26, figs. 8, 9, 11, 



Finely, spirally striated, whorls tuberculated above the suture, 

 body whorl plicate above ; yellowish chestnut color, interior lined 

 with chestnut. Length, 18 mill. 



Cape of Good Hope. 



Varies considerably in outline : C. contractum, Sowb. = C. 

 crumena, Bayle (fig. 9), and C. tceniatum, Sowb. (fig. 11), being 

 synonyms. 



C. CYLINDRACEUM, Pease. PL 26, fig. 12. 



White, with pinched-up, curved longitudinal distant ribs, and 

 more numerous sutural crenulations, and minute, distant, bead-like 

 spiral striae, closer at the suture. Length, 23 mill. 



Paumotus Is. ; Viti Is. 



