RiasbiA. ;^27 



R. SALERKOSA, Fraiionf. PI. C)G, fig. 44. 



Thick, somewhat shining, brownish, depressed conical, with 10- 

 12 strong, close, rounded ribs, subnodose at the suture, and on thie 

 angulated periphery of tlie last whorl ; whorls 5'., flattened, rapidly 

 increa.><ing. Length, 2'G mill. 



Sydney, Australia. 



Section Apicui.akia, Monts. 1884. 



R. siMiiJs, Scacchi. PI. 61, fig. 29. 



Thin, pellucid, vitreous, whorls rounded, with 10-14 longitudinal 

 ribs, vanishing about the middle of the body whorl, with punctate, 

 impressed spiral striae ; aperture small, produced in front, lip rarely 

 thickened externally ; white, peristome violaceous. 



Ijength, 5 mill. 



Mediterranean Sea. 



A', arata, Risso, R. ovatella, Forbes, R. rubroeincta, and R. apicu- 

 lata, Danilo and Sandri and vars. <ipicina, striata, decurtata, and 

 l(rvi'^, Monts., are synonyms. 



R. gemmula, Fischer, is probably a juvenile of this species. 

 R. Ehrenbergi, Phil. PI. (U, fig. 27. 



Solid, upper whorls smooth, the others with from 12-14 longitu- 

 dinal plications, and spirally striated, lower part of body whorl not 

 plicate, lip acute, rarely thickened ; whitish, pearly or light yellow- 

 ish, with chestnut flames at the suture, inner lip violaceous, outer 

 lip with a spot at the base. Length, o"7 mill. 



Mediterranean Sea. 



It is R. elegans, Brusina. 



R. d'ORBiGNYi, Audouin. PI. 67, fig. 68. 



Imperforate, rather solid, with 8-10 longitudinal rounded ribs, 

 spirally lirate ; whorls 6, convex, suture distinct; aperture a little 

 efluse below. Length, 3 mill. 



Red Sea. 

 R. iNCONSPicuA, Alder. PI. 62, fig. 52. 



Rather solid, but translucent, polished, whitish or light yellowish 

 white, sometimes milk-white, occasionally obscurely maculated or 

 shortly strigate with chestnut, apex corneous; luimerously, nar- 

 rowly costate, the interstices closely spirally striate; lij) with white 

 varix. Length, 1'8 mill. 



E}iroj>e. 



R. maeidata, Brown, R. rariegata, Schwartz, and var. glohosa, 

 Morch (A*. Kisloensiii, Dunker), are synonyms. 



