Mr. A. Adams on new Mollusca from Japan. 45 



5. Chrysallida alveata, A. Adams. 



C. testa ovato-oblonga, rimata, alba, nitida, semiopaca ; anfractibus 

 a\, planiusculis, longitudinaliter plicatis, interstitiis crebre stri- 

 atis ; anfractu ultimo elongate, ad basin rotundato ; apertura ovata; 

 plica parietali obliqua. 



Hab. Tsu-Sima; 16-26 fathoms. 



Like C. pupula, but semi-opake, thinner, and more slender; 

 the ribs smaller, and not prominent at the sutures ; interstices 

 more coarsely striated. 



6. Chrysallida munda, A. Adams. 



C. testa ovato-oblonga, ixi medio tumida, albida; anfractibus 4^, 

 convexiusculis, longitudinaliter plicatis, plicis ad suturas simpli- 

 cibus, interstitiis tenuiter striatis ; anfractu ultimo ad basin rotun- 

 dato ; apertura oblonga ; plica parietali obliqua. 



Hab. Korea Strait ; 46 fathoms. 



Like C. pupula, but shorter and more conical ; whorls more 

 convex; plicse simple at the sutures, and the intervals between 

 the plicae very finely striated. 



7. Chrysallida mumia, A. Adams. 



C. testa elongato-ovali, albida ; anfractibus 6^, planiusculis, plicis 

 longitudinalibus oblitjuis instructis, interstitiis transversira tenuis- 

 sime striatis ; apertura ovata ; plica parietali obliqua. 



Hab. Port Hamilton; 7 fathoms. 



Like C. munda, but more elongate; whorls more numerous 

 and less convex ; interstices very finely striated. 



8. Chrysallida nana, A. Adams. 



C. te>ta perparva, gracili, tereti, alba ; anfractibus 4^, convexiusculis, 

 longitudinaliter plicatis, plicis distantibus ; anfractu ultimo ad 

 peripheriam rotundato, plicis ad basin evanidis ; apertura ovata ; 

 plica parietali inconspicua, obliqua. 



Hab, Tsu-Sima; 16-26 fathoms. 



9. Chrysallida terebra, A. Adams. 



C. testa gracili, tereti, subulata, nitida, albida; anfractibus 7^, planis, 

 longitudinaliter plicatis, plicis vix undulatis, validis, subdistanti- 

 bus, interstitiis creberrime transversim striatis ; suturis profundis ; 

 anfractu ultimo ad basin subangulato ; apertura subquadrata ; 

 plica parietali valida. 



Hab. Tsu-Sima; 16-26 fathoms. 



10. Chrysallida pv^io, A. Adiiins. 



C. testa parva, turrito-conica, nitida ; anfractibus 51-, planis, oblique 



