152 ANACHIS. 



uniform white; lip with exterior varix and interior denticula- 

 tions. Length, 7 mill. 



Habitat unknown. 



Figured but not described by Duclos, and not recognized by 

 subsequent students. C. Belizana, Duclos (fig. 21), appears to 

 be identical. 



C. SPIRATELLA, von Martens. PL 54, fig. 22. 



Shell small, oblong tut reted, distinctly spirally lirate, yellowish 

 with nodiform short ribs on the periphery, which are white ; lip 

 subsimple, canal open, shortly recurved. Length, 4'5 mill. 



Mauritius. 



C. RUBRA, von Martens. (Unfigured.) E. Coast of Patagonia. 



Described from an imperfect specimen and referred doubtfully 

 to Columbella. 



Section VI. Anachis, I- 7 . ;>nd A. Adam?. 



Shell oval-fusiform, longitudinally strongly ribbed, spire 

 elevated; last whorl, not narrowed in front; aperture narrow; 

 columella straight ; outer lip nearly straight, with a posterior 

 sinus, crenulated within. 



C. RUGOSA, Sowb. PI. 54, figs. 23-27. 



Shell ovate, tuberculate, plicate or. rudely ribbed, the ribs only 

 developed on the upper half of the body-whorl, whole surface 

 with coarse revolving striae ; white, stone-color or light olivaceous, 

 with large chocolate clouds, especially on the back of the body- 

 whorl which is sometimes nearly covered with this color. 



Length, 18-22 mill. 



Panama. 



The ordinary appearance of adults of this species is that shown 

 by fig. 23 ; sometimes the shell is narrower and less rugose, being 

 ribbed rather than tuberculate (fig. 24). 



The synonyms are C. bicolor, Kiener (fig. 25), and, I think, 

 C sinuata, Sowerby (figs. 26, 27). The latter has the characters 

 of C. rugosa, except that the outer lip has a projecting sinus 

 in the middle; it is a remarkable-looking shell and Sowerby 

 thinks it " almost generically distinct," yet places it in Anachis. 

 Judging from the figure, I place it here as a monstrosity of this 

 species. 



