RissoiA. 388 



R. PULCHELLA, Phil. PI. ()2, figs. 53, 54. 



Subperforate, obliquely subdistantly plicate, last whorl with the 

 plieie short, or smooth ; yellowish, with fulvous flames l)etween the 

 ribs, ofleu unimaculate ou tlie base of the lip. Length, 2'8 mill. 



Mediterranean Sea. 

 R. RADiATA, Phil. PI. 68, fig. 55. 



Imperforate, thin, hyaline, yellowish brown, irregularly fasciate, 

 and strigate between the ril)s with chestnut, lip with a chestnut 

 spot ; with or without a few obtuse ribs, vanishing at the periphery. 



Length, 4'2 mill. 



Mediterranean, England* 



It is R. parva, Jeffreys, R. uiidata, Bivona. 



Var. SIMPLEX, Phil. 



Very smooth, white or yellowish, with undulating chestnut longi- 

 tudinal lines. 



R. AMELIA, AVatson. PI. 67, fig. 74. 



Narrowly umbilicated, thin, glossy, horny white, with about. 20 

 rounded, wavy ribs and narrower furrows, vanishing at the peri- 

 phery, below it spiral threads; whorls 5?, moderately convex, with 

 impressed suture, periphery very obsoletely angulated ; outer lip 

 thin. Length, 2*25 mill. 



Off Raima, Canaries; 1125 fms. 



R. Algeriana, Monts. PL 65, fig. 20. 



Imperforate, with rounded longitudinal ribs and about equal in- 

 terspaces, yellowish brov\'n, with a brown subsutural band and 

 three more on the base ; lip simple, sharp. Length, 3 mill. 



Algiers. 



Monterosato remarks that it belongs to the same group as R. 

 Montagui, and Weinkauff thinks it will prove a variety of that 

 species. 



Var. RUFULA, Monts. 

 Uniform reddish brown. 



R. PINX.E, Krauss. PL 68, fig. 88. 



Imperforate, somewhat solid, shining, white, lineolate with cheist- 

 nut, with 8-9 obtuse, remote longitudinal ribs, and obsolete spiral 

 striae; whorls 7, convex, with impressed suture; lip acute. 



Length, 5'8-6 mill. 



Cape of Good Hope, on byssus of Pinna, 



