i5 ME. A. ADAMS ON SPECIES OF PTEAMIDELLIN^ 



variciformibus, interstitiis valde liratis; apertur asubquadrata ; labio 

 recto, spiraliter tortuoso ; labro intus incrassato, margine acuto. 



Hab. 0-Sima; Takano-Sinia. 



This is a singular-banded shell, very much resembling a Rissoina ; but 

 the iuner lip is spirally twisted, and the nucleus is sinistral. 



2. MORMULA EGREGIA, A. Ad. 



M. testa subulato-turrita, crassa, solida, rissoida, carneola, rufo fasciata ; 

 anfractibus normalibus 8, planis, longitudinaliter valde costatis, trans- 

 versira totis liratis, fasciis tribus transversis rufis ornatis ; apertura 

 subquadrato-ovata ; labio spiraliter tortuoso ; labro intus incrassato, 

 extus varicoso, margine arcuato, acuto. 

 Hab. Delaguete; Philippines. 



I have introduced this singular Rissoid-looking shell here, although not 

 from Japan, as a second species of Mormula. It appears to agree conge- 

 nerically with M. rissoina; but the nucleolar whorls are unfortunately broken 

 off. 



Gren. Chetsallida, Cpr. 



The species enumerated and described in this communication 

 are all from Japan. 



1. Chrysallida plicata, A. Ad. Annals Nat. Hist. 18G0, 

 Hab. Mino-Sima; Gotto ; 0-Sima. 



2. Chrysallida consimiUs, A. Ad. Annals Nat. Hist. 1861. 

 Hab. 0-Sima ; Takano-Siraa. 



3. Chrysallida pupula, A. Ad. Annals Nat. Hist. 1861. 

 Hab. Tsu-Sima, 26 fathoms. 



4. Chrysallida alveata, A. Ad. Annals Nat. Hist. 1861. 

 Hab. Tsu-Sima; Takano-Sima. 



5. Chrysallida consobrina, A. Ad. Annals Nat. Hist. 1861. 

 Hab, Awa-Sima; Gotto. 



6. Chrysallida nana, A. Ad. Annals Nat. Hist. 1861. 

 Hab. Tsu-sima, 26 fathoms. 



7. Chrysallida mumia, A. Ad. Annals Nat, Hist. 1861. 

 Hab. Gotto, 48 fathoms. 



8. Chrysallida mundula. A. Ad. (Parthenia mundula, Annals Nat. Hist. 

 1861). 



Hab. Sado ; 0-Sima. 



9. Chrysallida munda, A. Ad. Annals Nat. Hist. 1861. 

 Hab. Korea Strait. 



10. Chrysallida filocincta, A. Ad. 



C. testa elongato-ovali, albida, linea rufa (in anfractu ultimo lineis duabus) 

 ornata ; anfractibus normalibus 5, convexiusculis, longitudinaliter pli- 



