335 



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

 angular periphery ; aperture small, lip without varix. 

 Length, 2 mill. 



Off Culebrn Isl., W. I. ; 390 fins. 



R. PERNAMBUCENSIS, Watson. PL 67, fig. 73. 



Imperforate, polished, white, with 15-20 round, flexuous ribs, 

 and broad interspaces, with faint microscopic spiral markings; 

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

 Length, 2 mill. 



Off Pernambuco, Brazil; 350 fins. 



R. AURITA, Monts. PL 65, fig. 17. 



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

 narrow sulci. Length, 2 mill. 



A Igier*. 



The author has only given distinctive characters for his species, 

 and having no specimen, I cannot describe it. 



R. DOLIOLUM, Phil. PL 65, fig. 19. 



1'upiform, solid, whitish, or yellowish; with 14-16, flattened, ir- 

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

 varicose. Length, 2'3 mill. 



Red Sea; fossil in N/>////. 

 R. ECCHILA, Watson. PL 03, 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, l*o mill. 



Madeira. 



Described by Watson as R. Novaremis, preoccupied by Frauen- 

 feld. 

 R. TURRICULA, Jeffreys. PL 65, fig. 18. 



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

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

 thin, distant, curved costae, and no spiral sculpture. 



Length, 1'2 mill. 



Atlantic Ocean ( siibfossil V ) 



II. IJRYCHIA, Verrill. PL 68, fig. 96. 



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

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



