RISSOINA. 391 



Section PYRAMIDELLOIDES, Nevill. 1884. 



R. MIRANDA, A. Ad. PL 59, figs. 57-59, 55. 



White, whorls 7, with revolving nodulous ribs, of which there 

 are two of unequal size on the spire whorls, the body whorl with 

 about four series ; outer lip crenulately varicose. Length, 3 mill. 



Red Sea, Indian Ocean, Japan, Mauritius. 



R. insolita, Desh. (fig. 55), and R. Bellardii, Issel (fig. 59), are 

 synonyms. 



Section STOSSICHIA, Brusina. 1878. 



R. PSETJDOCONCINNA, Nevill. PI. 58, fig. 19. 



Whitish, thinly longitudinally costulate, and more thinly spirally 

 striate, the longitudinal sculpture obsolete below ; whorls 6, some- 

 what convex; aperture narrowly channeled in front, lip varicose. 



Length, 9 mill. 



Japan. 



This name is substituted for R. concinna, Sowb., not Adams. 



R. MIRABILIS, Dunker. PI. 59, fig. 60. 



Light ochraceous ; whorls 9, somewhat convex, with close longi- 

 tudinal ribs, crossed by spiral lira?, the intersections nodulous ; su- 

 ture impressed ; aperture widely channeled below, columella nodu- 

 lous below, lip varicose. Length, 5'5 mill. 



Ins. Upolu. 

 R. AiixoRMis, Nevill. PL 59, fig. 61. 



White ; whorls 6, with about 15 longitudinal ribs, vanishing 

 towards the base, crossed by dense spiral lirae, the intersections sub- 

 granular; aperture broadly channeled, lip crenulately varicose. 



Length, 3 mill. 



Mauritius, Ceylon. 



Subgenus EATONIELLA, Dall. 1876. 



I\. KERGUELENENSIS, Smith. PL 60, fig. 67. 



Scarcely rim ate, thin, semipellucid, blackish olivaceous, lighter 

 towards the lip, a little shining, striated by incremental lines; 

 whorls 6, convex, suture simple; peristome simple, continuous. 



Length, 3 mill. 



Kerguelen's Land. 

 R. SUBRUFESCENS, Smith. PL 60, fig. 68. 



Scarcely rimate, thin, semidiaphanous, chestnut color, whitish 

 towards the lip, smooth, with thin incremental stria? ; whorls 4, 



