FOUND IN JAPAN. O 



5. Pyrgulina pygmaea, A. Ad. (Chrysallida pygmsea, Annals, 1861). 

 Hab. Mino-Sima; Gotto. 



6. Pyrgulina pulchella, A. Ad. (Chrysallida pulchella, Annals, 1860). 

 Hab. Gotto; Miuo-Sima; Seto-Uchi; Akasi. 



7. Pyrgulina concinna, A. Ad. (Chrysallida concinna, Annals, 1860). 

 Hab. Mino-Sima. 



8. Pyrgulina miranda, A. Ad. (Chrysallida miranda, Annals, 1861). 

 Hab. Yobuko. 



9. Pyrgulina bellula, A. Ad. (Parthenia bellula, Annals, 1860). 

 Hab. Tabu-Sima, 24 fathoms. 



10. Pyrgulina fenestrata, A. Ad. (Parthenia fenestrata, Annals, 1860). 

 Hab. Mino-Sima. 



1 1. Pyrgulina pura, A. Ad. (Chrysallida pura, A. Ad. Annals, 1861). 

 Hab. Awa-Sima ; Takano-Sima. 



12. Pyrgulina tantilla, A. Ad. 



P. testa tenui, turrita, alba, semipellucida ; anfractibus normalibus4, con- 

 vexiusculis, postice vix angulatis, longitudinaliter plicatis, plicis undu- 

 latis, subeonfertis, interstitiis concinne elathratis, suturis profundis J 

 apertura ovata, plica columellari conspicua. 



Hab. 0-Sima ; Tanabe ; Takano-Sima, 



A very pretty little species, semitransparent, and neatly sculptured. 



13. Pyrgulina decussata, A. Ad. 



P. testa ovato-turrita, rimata, tenui ; anfractibus normalibus 4, planatis, 

 postice rotundato-angulatis, costellis tenuibus confertis longitudinali- 

 bus et lineis elevatis transversis decussatis ; apertura quadrato-ovata ; 

 labio subrecto ; plica columellari cselata. 



Hab. Gotto, 48 fathoms. 



In this species the longitudinal ribs are very fine and close together, and 

 are crossed by transverse lines. 



Gen. Mumiola, A. Ad. 



Testa tenuis, elongata seu ovata ; anfractibus convexis, cancellatis 

 aut granulosis. Aperhira ovata ; labro margine regulariter 

 arcuato. 



1. Mumiola spirata, ^. Jrf. (Monoptygma spirata, A. Ad. Sow. Tkes. 

 Monopt. pi. 172. figs. 26, 27.) 



Hab. 0-Siraa. 



2. Mumiola reticosa, A. Ad. 



31. testa tenui, rimata, acuminato-ovata ; anfractibus normalibus 4, con- 

 vexis, lineis elevatis transversis et longitudiualibus decussatis ; apertura 

 ovata ; labio plica postica, transversa, valida ; labro siniplici, arcuato. 



Hab. Seto-Uchi. 



