RISSOIA. 351 



Section CERATIA, H. and A. Adams, 1854. 



K. PROXIMA, Alder. PI. 63, fig. 82. 



Somewhat solid, a little shining, semipellucid, yellowish white ; 

 whorls 6, convex, with impressed suture, almost smooth, very 

 slightly spirally striate ; lip a little thickened, but not varicose. 



Length, 3 mill. 



Europe. 



R. striatula, Jeffreys and probably R. pupoides, Requien, are 

 synonyms. 



R. MACRA, Watson. PL 64, fig. 99. 



Imperforate, thick, subtransparent white, apex obtuse ; whorls 6, 

 rather flat, with narrowly margined suture, and slight spiral striae ; 

 outer lip sharp, very feebly varicose. Length, 2'5 mill. 



Off Nightingale Isl., Tristan da Cunha; 100-150 fms. 



R. TRUXCATA, Garrett. PI. 63, fig. 79. 



Imperforate, thin, pellucid, shining, white, apex blunt ; whorls 5, 

 slightly convex, closely spirally striate ; peristome thick, slightly 

 expanded. Length, 2 mill. 



Viti Jx. 



Unfigured Species. 



R. PYRGULA, A. Ad. Gulf of Suez. 



R. MACCOYI, Tenison Woods. Tasmania. 



1\. VARIEGATA, Tapparone. Papuan 7x. 



Section HYALA, H. and A. Adams. 18~>4. 



R. VITRKA, Mtg. PL 63, fig. 81. 



Imperforate, thin, semipellucid, yellowish white, smooth, very 

 lightly spirally striate, apex obtuse; whorls 6, convex, oblique, with 

 deep suture ; lip simple, thin, contracted. Length, 4 mill. 



Europe. 



It is R. glabrata, Fleming, R. crystallina and R. virginea, Brown. 



Unfigured Species. 



R. CONCINNA and R. NITIDA, A. Ad. Gnlf of Suez. 



R. PUMILA, A. Ad. Gulf of Suez, Japan. 



R. GLABRATA, Phil. Japan. 



