Mr. A. Adams on new MoUusca from Jaimn. 125 



XVItl. — 0)1 some new Species of Eulima, Leiostraca, and Ceri- 

 thiopsis from Japan. By Arthur AdamSj F.L.S. &c. 



Genus Eulima, E-isso. 



The smaller species of Eulima, I believe, have never been very- 

 minutely examined. Only a few species liave hitherto been 

 detected in the China Sea, and none are recorded from the Sea 

 of Japan. From the similarity of form and colour (subulate and 

 white) common to all the species, and from the entire absence 

 of sculpture, the study of this genus is very difficult ; and the 

 S2)ecific differences can only be appreciated by making careful 

 outlines of all the species. The only division I could have made 

 in the twenty-one species here indicated would have been into 

 straight and Jlexuous ; but this being quite an arbitrary character, 

 I have not adopted it. 



1. Eulima robusta, A. Adams. 



E. testa pyramidato-subulata, flexuosa, apice recurvato ; anfractibus 

 convexiusculis, ultimo maguo, obliquo, ad basin rotundato, suturis 

 marginatis ; apertura ovata, producta ; labio superne incrassato ; 

 labro arcuate. Lactea, semiopaca. . 



Hab. Mino-Sima ; 63 fathoms. 



2. Eulima clavula, A. Adams. 



E. testa acuto-pyramidali, apice postice inclinato ; anfractibus 8, 

 planatis, suturis marginatis ; anfractu ultimo lato, ad peripheriam 

 vix angulato, ad basin obliquo ; apertura parva, ovata, efPusa ; 

 labio incrassato. Lactea, solidiuscula, opaca. 



Hab. Mino-Sima; 63 fathoms. 



3. Eulima pinguicula, A. Adams. 



E. testa acuto-pyramidali, arcuata, apice antrorsum inclinato ; an- 

 fractibus 8, convexiusculis, ultimo magno, obliquo, ad peripheriam 

 obtuse angulato, ad basin perobliquo ; apertura parva, porrecta, 

 ovata; labio tenui, arcuato. Lactea, solida, opaca. 



Hab. Mino-Sima; 63 fathoms. 



4. Eulima curvata, A, Adams. 



E. testa subulata, arcuata, tenui, antrorsum inclinata ; anfractibus 7, 

 planatis ; anfractu ultimo elongato, antice producto ; apertura 

 elongato-ovali ; labio tenui, curvato. Alba, opaca, solidiuscula. 



Hab. Mino-Sima; 63 fathoms. 



5. Eulima mundula, A.Adams. 



E. testa subulata, tortuosa ; spira lateralitcr curvata ; anfractibus 9, 

 convexiusculis, ultimo amplo, ad basin obliquo; apertura ovata, 



