Mr. A. Adams on new Mollusca from Japan. 411 



Lachesis Japonica, A. Adams. 



L. testa valida, turrita, fusca ; spira elata, aperturam superante ; an- 

 fractibus riovem, tribus supremis laevibus, alteris convexis, costis 

 longitudinalibus validis et liris elevatis transversis regulariter can- 

 cellatis, interstitiis longitudiiialiter striatis ; apertura elongata, 

 ovali, antice canali brevi vix recurva instructa ; labio laevi, antice 

 flexuoso ; labro margine crenato, intus lirato. 



Hab. Off Mino-Sima ; 63 fathoms. 



I believe this to be the finest and largest species of this little- 

 known genus hitherto described. It is an elegant Phos-like 

 shell, regularly cancellated, and with the spire as long again as 

 the aperture. The three upper whorls are large, smooth, and 

 nucleolar. It is an inhabitant of deep water. 



Cancellaria (Merica) Fischeri, A. Adams. 



C. testa ovato-conica, imperforata, pallide fusca ; spira elata ; an- 

 fractibus 5 j, planiusculis, longitudinaliter, nodoso-plicatis, transver- 

 sim liratis ; apertura oblonga, antice vix canaliculata et angulata ; 

 labio late flexuoso, margine externo libero, acuto, plicis tribus 

 obliquis in medio instructo; labro effuso, intus lirato, margine 

 acuto, integro. 



Hab. Straits of Korea ; 63 fathoms. 



Trichotropis cedo-nulli, A. Adams. 



T. testa turbinata, anguste umbilicata, fusca, spira elata ; anfractibus 

 5, rotundatis, cingulis transversis crenatis, majoribus cum mino- 

 ribus alternantibus, et costellis obliquis longitudinalibus eleganter 

 clathratis, interstitiis concinne et pulcherrime decussatim sculptis ; 

 apertura semicircular!, antice canaliculata ; labio recto, inferne 

 callo parvo instructo ; labro simplici, arcuato, intus Isevi. 



Hab. OffMino-Sima; 63 fathoms. 



This is a very beautifully sculptured species, with rounded 

 whorls and semicircular aperture. If we separate the genus 

 Trichotropis into three groups, as will doubtless be necessary 

 before long, this species will belong to Trichotropis proper. 



Velutina Pusio, A. Adams. 



V. testa parva, pallide fusca, epidermide liris elevatiusculis radianti- 

 bus et lineis concentricis concinne decussata ; spira prominula ; 

 anfractibus 1, convexis ; apertura ampla, expansa ; labio postice 

 reflexo, antice acuto et simplici ; labro effuso, margine arcuato, 

 integro ; regione umbilicali impresso. 



Hab. Straits of Korea; 63 fathoms. 



Rissoa (Goniostoma) pupiformis, A. Adams. 

 R. testa solida, alba, polita, vix rimata, pupiformi, utrhique constricta; 



