326 RissoiA. 



R. DECOEATA, Phil. PI. 62, figs. 30, 31. 



Rather solid, shining, scarcely pellucid, vitreous white, apex vio- 

 laceous, with longitudinal chestnut lines between the ribs, sometimes 

 tessellated with chestnut ; longitudinal ribs 12, thick, spiral striae 

 close, densely punctate ; aperture chestnut-violaceous, with a white 

 exterior varix. Length, 5 mill. 



Mediterranean Sea. 



The synonyms are R. pulchella, Danilo and Sandri, R. Lanzai, 

 Dunker, and var. lineolata, Brusina. 



R. Fraup:nfeli)IAna, Brusina. PI. QiQ, fig. 37. 



Solid, turreted, with very convex, subangulated whorls and deep^ 

 suture, with strong, rounded, elevated ribs, fading below the middle, 

 of the body whorl, crossed by close strise ; li]) varicose, produced ; 

 color vitreous white, peristome violaceous, varix white. 



Length, 5 mill. 



Dalmatiai,. 



More narrowly elongated, with more numerous whorls and more 

 elevated ribs than the preceding species. 



R. nodosa, Brusina, is a synonym. 



R. GuERiNi, Recluz. PL 62, figs. 36, 34, 35. 



With about 10 thick, rounded, longitudinal ribs, and punctate 

 spiral striie, last whorl subinflated, usually smooth ; lip varicose, 

 externally ; brownish, with close, zigzag, longitudinal chestnut 

 lines. Length. 5'8 mill. 



Europe.. 



R. xpeciosa, Brusina, is a synonym. 



Var. costulata, Alder. Fig.s. 34, 35. 



Narrower, yellowish, apex and aperture violaceous. 

 R. subeostulata, Schwartz, is a synonym. 



R. aurantiaca, Watson. PI. 65, fig. 5. 



Subopaque, subgradate, with deep suture ; ribs 18-20, double the 

 width of the interstices, fading out towards the base, with a dozen 

 rounded spiral lir?e, sometimes a little nodulous above ; lip thiq,' 

 thickened externally ; orange color, whitish towards the aperture. 



Length, 3 mill. 



Canary Is. 



K. MELANOSTOMA, Requicu, and var. ampiiorula, Brugn. (un- 

 figured.) 



Mediterranean. . 



