Mr. A. Adams on new Mollusca from Jai^an. 295 XXXII. — On some new Species of Mollusca from Japan. By Arthur Adams, F.L.S. &c. Genus Kleinella, A. Adams. Kleinella sulcata, A. Adams. K. testa oblonga, tenui, turbinata, profunde umbilicata ; spira data, conoidea, sordide alba, transversim sulcata, sulcis distantibus, inter-stitiis longitudinaliter concinne striatis ; anfractibus 3^, planis, superne angulatis ; anfractu ultimo ventricoso ; apertura oblonga, antice eversa et subeffusa ; labro tenui, postice angulato. Hab. Suwonado Sea ; 7 fathoms. Genus Cyrilla, A. Adams. Cyrilla decussata, A. Adams. C. testa oblonga, obliqua, vix insequilaterali, alba, solida ; costelUs radiantibus et lirulis concentricis confertim decussata ; cardinis dentibus posterioribus in laminas non desinentibus. Hab. Gotto Islands ; 48 fathoms. Genus Mucronalia, A. Adams. Mucronalia exilis, A. Adams. M. testa parva, subulata, graciliore, apice subito mucronato, recta, tenui, alba, polita, semiopaca, linea spirali angusta rufo-fusca or-nata ; anfractu ultimo lineis duabus succincto ; apertura elongate-ovata. Hab. Simonoseki, Suwonado Sea; 7 fathoms. Genus Apicalia, A. Adams. Testa distorta, polita, imperforata, subulata ; anfractibus irregulari-bus, supremis in mucronem dispositis. Apertura oblonga ; labio simplici. This form of Eulimida bears the same relation to Eulima that Muo'onalia does to Leiostraca. It is milk-white, without any coloured markings, and the whorls are distorted ; but it has the very peculiar mucro observed in Stylifer and Mucronalia. Apicalia gibba, A. Adams. A. testa obliqua, elevato-conoidea, alba, solida, vix opaca ; anfractibus normalibus 4, convexis, subgibbosis, supremis angustatis in forma mucronis dispositis ; apertura obliqua, ovata ; labio subincrassato. Hab. Gotto Islands; 71 fathoms. Genus Niso, Risso. Niso interrupta, Sow. Animal milk-white. Tentacles flat, subulate, diverging, ob-21*
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