Mr. A. Adams on new Mollusca from Japan. 421 



17. Turbonilla metulina, A. Adams. 



T. testa pyramidato-subulata, turrita, tenui, lactea,opaca ; anfractibus 

 normalibus 9, convexis ; costis obliquis, prominentibus, sequidi- 

 stantibus, interstitiis lirulis elevatis spiralibus decussatis ; anfractu 

 ultimo costis ad peripheriam desinentibus, basi laevi convexo; 

 apertura subquadrata ; labio recto. 



Hab. Mino-Sima; 63 fathoms. 



The species of Turbonilla obtained by me from the Japanese 

 side of the Korea Strait and from other parts of the Sea of 

 Japan are, with one exception (viz. T. perfect a, A. Adams), dif- 

 ferent from those I discovered at Chosan, in the Korea peninsula, 

 and at Port Hamilton, one of the Korean archipelago. They 

 are all very elegant and of delicate construction. 



Genus Leucotina, A. Adams. 



1. Leucotina exarata, A. Adams. 



L. testa ovato-conica, alba, umbilicata, solidiuscula ; anfractibus 4 j, 

 convexiusculis, transversim liratis, interstitiis tenuissime longitu- 

 dinaliter striatis ; apertura ovata, postice acuta ; plica parietali vix 

 mediana, parva, obliqua. 



Hab. Tabu-Sima; 25 fathoms. 



2. Leucotina insculpta, A. Adams. 



L. testa acuminato-ovata, alba, perforata, solidiuscula ; anfractibus 4f, 

 convexiusculis, transversim liratis, interstitiis valde punctatis ; 

 apertura oblonga, postice angustata, antice dilatata ; labio incras- 

 sato, plica parietali vix celato. 



Hab. Korea Strait ; 46 fathoms. 



Genus Dunkeria, P. P. Carpenter. 



1. Dunkeria scabra t A. Adams. ^ X'&Tfc.v.?^. 3 Si 



D. testa subulato-turrita, pallide fusca, imperforata ; anfractibus 8|, 

 convexis, costis nodosis longitudinalibus et liris elevatis tribus 

 transversis (circiter 7 in anfractu ultimo) cancellatis; apertura 

 ovata ; labio antice rufo tincto. 



Hab. Tsu-Sima; 16 fathoms. 



2. Dunkeria ferruginea, A. Adams. 



D. testa perparva, pyramidato-turrita, imperforata, ferruginea ; an- 

 fractibus 5^, convexis, ad suturas angustatis, liris duabus trans- 

 versis nodulosis costellis longitudinalibus validis distantibus de- 

 cussatis ; liris in anfractu ultimo 3 ; apertura ovato-quadrangulari, 

 antice acuminata. 



Hab. Sado ; 30 fathoms. 



