HELIX. 41 



ing. oblique, obtusely subangulated, flatly rounded below; 

 right margin of peristome subincurved. Diam. 5 mill. 



Ins. Upolu. 

 H. ADPOSITA, Mousson. PI. 8, figs. 58, 59. 



Narrowly umbilicated, thinly, unequally, but acutely obliquely 

 plicate-striate, corneous, suture impressed ; whorls 4^, moder- 

 ately increasing, somewhat convex, slightly, narrowly tumid 

 above, the last a little larger, not descending, a little flattened. 



Diam. 3*5 mill. 



Oneata, Viti Is. 

 H. INERMIS, Mousson. PL 8, figs. 60, 61. 



Moderately umbilicated, equally, thinly, striate-eostulate, 

 chestnut corneous; whorls 4, moderately increasing, slightly 

 convex, the last not descending, a little flattened in the middle. 



Diam. 2'6 mill. 



Lomma-Lomma and Vanua-Balavo, Viti Is. 



H. OUALANENSIS, Pease. PI. 8, figs. 62-64. 



Widely umbilicated, thin, translucent, flat above, periphery 

 rounded ; whorls 3-4, rapidly increasing, with subrugose, thin, 

 radiating striae, lightly concentrically striated, the last with 

 rounded base; ashy yellow, with angulated and flexuous, oblique 

 chestnut strigations and lines. Diam. 5 mill. Oualan Id. 



Un figured Species. 



H. PLANOSPIRA, Garrett. Earotonga, Cook's Is. 



H. MINUTALTS, Fer. Tahiti? 



YII. West Indian and South American Species. 



H. INAGUENSIS, Weinland. PI. 8, figs. 67, 68. 



Rather narrowly umbilicated, thin, whitish (dead?), irregu- 

 larly striulate ; whorls 4^, planulate, slowty increasing, the last 



not descending, base convex. Diam. 3'5 mill. 



Little Inagua. 

 H. COSTELLATA, d'Orbigny. PI. 8, fig. 69. 



Widely umbilicated, thin, not shining, with very close, thin, 

 equal, subdistant costulations, brownish, suture rather deep ; 

 whorls 5, convex, regularly increasing, the last a little wider 

 than the penultimate, rounded, not descending in front. 



Diam. 4 mill. Paraguay. 



