SEMI NELL A. 113 



with ten to twelve flexuous plications ; aperture narrow, with 



acute, simple lip. L. 3, diam. 2 mill. 



Kagosima (Stimpson). 



Mr. E. A. Smith refers this to the genus Zafra, described as 

 one of the Pleurotomidse, but which he thinks belongs to 

 Columbellidae. 



C. NEVILLI, Tryon. PL 57, fig. 25. 



Shell long and narrow, with a few narrow longitudinal ribs 

 separated by wide interspaces, and indistinct revolving striae ; a 

 groove below the suture of the upper whorls, becoming obsolete 

 near the last whorl ; outer lip acute, slightly emarginate at the 

 top, striated within. Length, 5 mill. 



Mauritius. 



Described by G. and H. Nevill as (7. balteata, a name preoc- 

 cupied by Gould. 



C. CLATHRATA, Brazier. 



Shell ovately fusiform, yellowish white, polished, longitudinally 

 roundly ribbed, ribs smooth, interstices clathrate ; suture canal- 

 iculated, noduled above and below, whorls six, convex, the last 

 lower half transversely grooved on the back giving the surface 

 a noduled appearance; aperture white, nearly oblong-ovate, 

 columella straight, with thin lip, having three white nodules, 

 peristome thin at edge, thickened internally, having eight 

 tubercles, the second upper one prominent, somewhat lirate, 

 sinuate at the upper part, canal short, narrow. 



L. 7, diam. 4 mill. 



Katow, New Guinea, 1 fms., sandy mud bottom (Brazier). 



An unfigured species with which I am unacquainted. 



C. ISOMELLA, Duclos. PI. 57, fig. 26. 



Shell clathrate by longitudinal ribs and revolving striae ; white, 

 variegated with orange-brown; lip thickened, smooth within. 



Length, 11 mill. 



Habitat unknown. 



This and the several following species have been figured and 

 named by Duclos, but not described, nor recognized by subse- 

 quent monographers. The present species may possibly be a 

 small Pleurotomid. 



