Mr. A. Adams on new Mollusca from Japan. 131 



5. Cerithiopsis paxillus, A.Adams. 



C. testa subulata, apice subobtuso, sordide alba; anfractibus 12, 

 planiusculis, costellis longitudinalibus et liris transversis regulariter' 

 clathratis, liris in anfractu ultimo tribus, in coeteris singulis duabus ; 

 anfractu ultimo basi liris spiralibus tribus instructo ; apertura sub- 

 quadrata, canale brevi ; labio brevi, recto, antice oblique truncato ; 

 labro vix efFuso, margine antice subeverso. 



Hab. Korea Strait; 46 fathoms. 



6. Cerithiopsis pagodula, A. Adams. 

 C. testa subulato-pyramidali, pallide fusca; anfractibus circa 12, 

 convexis, costellis longitudinalibus et liris transversis regulariter 

 cancellatis, liris in anfractibus 1 1 duabus (in anfractu ultimo tribus) ; 

 anfractu ultimo ad peripheriam biporcato ; apertura subquadrata, 

 canale brevi ; labio curvato, oblique truncato. 



Hab. Korea Strait ; 46 fathoms. 



Subgen. Seila, A. Adams. 



Testa subulata, gracili ; anfractibus spiraliter liratis, interstitiis sculp- 

 tis ; apertura canale brevi instructa. 



This small section is founded on Triphoris dextroversus, Adams 

 & Reeve, and an allied new species. In form and general aspect 

 they certainly resemble some species of Triphoris ; but they are 

 both dextral, and do not possess the closed canal of that genus. 

 They differ from the other species of Cerithiopsis in being trans- 

 versely Urate, and not ribbed or cancellated. 



7. Cerithiopsis [Seila) dextroversa, Adams & Reeve. Triphoris 

 dextroversus, Adams and Reeve, Voy. Sam. Zool. (pi. 11. 

 fig. 31). 



Hab. Tsu-Sima ; 16 fathoms : Korea Strait ; 46 fathoms. 



8. Cerithiopsis {Seila) cingulata, A. Adams. 



C testa subulato-pyramidali, griseola ; anfractibus planatis, cingulis 

 tribus transversis elevatis simplicibus (7 in anfractu ultimo), inter- 

 stitiis creberrime longitudinaliter striatis ; apertura subquadrata, 

 antice breviter canaliculata ; labio brevi, crasso, oblique truncato ; 

 labro effuso, in medio vix producto. 



Hab. Tsu-Sima; 16 fathoms. 



Ta-Lien-Whan, China, 

 July 20, 1860. 



