CERITHIUM. 141 



C. MUTABILE, C. B. Adams. PL 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. PL 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. 



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 whorl 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. PL 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. PL 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. contraction, 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. 



