130 Mr. A. Adams on new Molluscafrom Japan. 



ultimo subvaricoso, ad peripheriam subrotundato ; apertura ob- 

 longa, antice producta ; labio subincrassato, antice reflexo. 



Hah. Okosiri : 35 fathoms. 



Genus Cerithiopsis, Forbes. 



I have described the following little shells as species of Ceri- 

 thiopsis ; but^ without an examination of the animals^ it is im- 

 possible to distinguish them from the Cerithideous group named 

 Bittium by Dr. Leach. With them I have associated some shells 

 regarded by me formerly as dextral Triphorides, but which I 

 now consider to be nearer allied to Cerithiopsis, from which they 

 are distinguished by a prolongation of the fore part of the aper- 

 ture, and by their whorls being crenulate instead of cancellate. 



1. Cerithiopsis rosea, A. Adams. 



C. testa rosea, subulato-turrita ; anfractibus S\, convexis, costellis 

 longitudinalibus et liris trausversis cancellatis, anfractibus liris 

 duabus (in anfractu ultimo tribus) instructis, basi Isevi ; apertura 

 rotundata, antice emarginata; labio brevi, recto, antice oblique 

 truncato. 



Hab. Tsu-SIma; 16 fathoms. 



2. Cerithiopsis cerina, A. Adams. 



C. testa subulato-pyramidali, gracili, sordide alba, quasi cerea ; an- 

 fractibus circa 14, planiusculis, liris subtuberculatis transversis 

 qnatuor (interstitiis valde punctatis) instructis ; anfractu ultimo 

 basi piano ; apertura ovata, canale brevi sinistrorsum directo ; 

 labio tortuoso ; labro intus sulcato. 



Hab. Mino-Sima ; 63 fathoms. 



3. Cerithiopsis baculum, A. Adams. 



C. testa subulata, gracili, pallida brunnea; anfractibus circa 13, 

 convexiusculis, costellis longitudinalibus et liris transversis valde 

 cancellatis, liris in anfractu ultimo tribus, in cseteris singulis duabus ; 

 apertura subquadrata, canale brevi; labio brevi, recto, oblique 

 truncato ; labro in medio obtusim angulato. 



Hab, Mino-Sima; 63 fathoms. 



4. Cerithiopsis clavula, A. Adams. 



C. testa subulato-pyramidali, pallida fusca; anfractibus circa 14, 

 convexiusculis, costellis longitudinalibus et liris transversis valde 

 cancellatis, anfractibus liris tribus (in anfractu ultimo quatuor) 

 instructis, liris ad costas nodulosis ; basi laevi ; apertura subqua- 

 drata, antice emarginata ; labio brevi, recto ; labro margine recti- 

 usculo. 



Hab. Mino-Sima; 63 fathoms. 



