NESOPUP^: OP ST. HELENA. 363 



-effuse downward, more impressed transversely behind the 

 aperture. Aperture larger for the length of the shell, the 

 peristome more expanded. Length 2%, diam. 1% mm ; aper- 

 ture 1 mm. high, % wide (Maltzan) . 



West Africa. Nianing, in forest. 



Pupa (Stawodon) minutalis Morel., var. megolomastoma 

 MALTZAN, Nachr. d. Malak. Ges., xxii, April 1890, p. 48. 



The name was evidently intended to he megalomastoma, 

 ;and should be so corrected. 



VIII. ST. HELENA SPECIES. 

 Section Helenopupa Pilsbry, n. sect. 



Lamellae and folds as in typical Nesopupa except that the 

 columellar lamella curves slightly upward at its inner end; 

 surface nearly smooth. 



Like Indopupa, Cocopupa and Insutipupa, this is less 

 specialized than the typical Nesopupse. It is notable for the 

 smooth surface. 



60. NESOPUPA TURTONI (EJ. A. Smith). PL 33, figs. 11, 14, 15. 



Shell minute cylindric, obtusely conic above, whitish, sub- 

 rimate. Whorls 5 to 6, convex, slowly increasing, parted by 

 a slightly oblique suture, striated with very oblique, very 

 delicate lines, the last whorl hardly descending, with one pit 

 in the middle behind the lip. Aperture small, irregularly 

 subquadrate, hardly a third of the total length, having 6 

 teeth within, three on the parietal wall, one columellar, two 

 palatal; peristome white, slightly expanded and reflected, 

 continuous, indented above. 



Length 3, diam. 1 mm.; aperture % mm. long and wide 

 (Smith). 



St. Helena: Sugarloaf Quarry, common; extinct (Turton). 



Pupa turtoni SMITH, Proc. Zool. Soc. Lond., 1892, p. 268, 

 pi. 22, f. 20, 20a, 



Like the St. Helena Endodonts, this species has a Poly- 

 nesian aspect. 



In the best preserved specimens the surface is smooth ex- 



