RISHOIA. 335 



we some faint spiral threads ; whorls 7, flattened, the last with sub- 

 JMUgular periphery ; aperture small, lip without varix. 

 Length, 2 mill. 



Off Cxdehra IsL, W. L; 390 fins. 



R. Pernambucensis, Watson. PI. G7, fig. 73. 



Imperforate, polished, white, with ir)-20 round, flexuous ribs, 

 a,iid broad interspaces, with faint microscopic spiral markings ; 

 whorls 5, flat, periphery not angulated ; lip varicose. 



Length, 2 mill. 



Off Pernamhuco, Brazil; 350 tins. 



R. AURiTA, Monts. PI. (i'), fig. 17. 



Close to R. semlstriata, Mtg., but has more convex whorls, and 

 narrow 8ulci. Length, 2 mill. 



Algiers. 



The author has only given distinctive characters for his species, 

 and having no specimen, I cannot describe it. 



R. DOLioLUM, Phil. PI. 65, fig. 19. 



Pupiform, solid, whitish, or yellowish ; with 14-16, flattened, ir- 

 regular, close ribs, and undulated suture ; lip not protracted, nor 

 varicose. Length, 2*3 mill. 



Bed Sea; fossil in Sicily. 

 R. EUCHiLA, Watson. PI. 63, fig. 72. 



Rather solid, vitreous, shining, subopalescent ; whorls 4-5, rap- 

 idly increasing, suture distinct ; with 20-30 flexuous rounded ribs, 

 about equalling the interspaces, vanishing below, spirally lirate ; 

 yellowish white, with two or three spiral series of chestnut spots. 



Length, 1'5 mill. 



Madeira. 



Described by Watson as R. Novaremis, preoccui)ied by Frauen- 

 feld. 

 R. CURRICULA, Jeffreys. PI. Q>i), fig. 1<S. 



Minutely rimate, thin, semipellucid, a little shining, whitish ; 

 whorls 4, tumid, rapidly increasing, AVith deep suture ; with 20-25 

 •thin, distant, curved costte, and no spiral sculpture. 



Length, 12 mill. 



Atlantic Ocraii rsuhfossil?) 

 R. BR vein A, Verrill. PI. 6«, fig. 96. 



Minutely rimate, thick, brownish, with about 14 rather close 

 rounded ribs, fading on the lower part of the body whorl, and rather 



