RISSOIA. 



R. in- ,11. A, Adams. PL 69, fig. 33. 



8 -anvly rimate, rather thin, semipellucid, smooth, li-lit yellowish, 

 bifa.-ciate with chestnut, penultimate whorl sometime- chestnut 

 color; whorl.- 4, tumid, with deep suture. Length, 7 mill. 



Europe. 



It is R. pygmaea, Mich. Jeffreys has indicated a var. palli<l<t. 

 R. FUSCA, Phil. PL 69, fig. :\4. 



Scarcely rimate, smooth, brownish, apex obtuse; whorls 442, 

 convex. Length, 1 mill. 



R. inflata and R. turriculata, Monts., R. paludinoides, Caleara, 



are synonyms. 



R. AI.I.KKYANA, Arad. et Benoit. PL 69, fig. 35. 



Scarcely umhilicated, thin, very smooth, pellucid, white; whorl- 

 1. very convex, with deep suture; lip continuous, simple. 

 Length. J mill. 



Sicily. 



R. ambigua, Brugn., and var. .W/V/A/, Monts., are synonyms. 

 R. 8< MTI ANA, Arad. et Benoit. PL 69, fig. 36. 



Shell impert'orate, smooth, vitreous, shining, yellowish chestnut, 

 spire obtuse; whorls 5, convex, suture moderately impressed. 

 Length. ? 



/'///. 



/.'. zancleana, Arad. (in tavola) is a synonym. 

 R. MI< |:.Mi;n:n A, Sei:uen/a. 1*1. (!), lig. 39. 



Thin, smooth, siihtransparent, yellowish, with three or four 

 chestnut bands, suture deep; whorls 4, convex, the last suhinilated, 

 base narrowly rimate. Length, T25 mill. 



M< //'/> I'l'inn-'iti Sea. 

 R. M M:I.K. Tcnison Woods. PL 71, fig. 9. 



LTOely rimate, thin, translucent. >nioky horn-colored, two- 

 banded with yellow, polished: whorls 1. 76ntrioOfle, slopini;. 

 .ih. 2'fi mill. 



/ H'lHl'il. 



I:. \ !. Tenuon \V k ri. 71, fi-. 1<. 



[mperforate, l>ut channeled, jM)li>hcd, tran-liicent. pale horn color, 



obscurely hit 'a-ciai. with dusky brown, coluniella black; normal 

 wlmrl- .". well rounded; ajerture |>ro(luccd below, lip thin, acute, 

 lij> retlect-d into a tal-e uml.iliciis. Leii-tli. 1 mill. 



Tasmania. 



