4 MR. A. ADAMS ON SPECIES OE PTEAMIDELLIN^ 



1. Parthenia monocycla, A. Ad. Annals Nat. Hist. 1860. 

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



2. Parthenia spirata, A. Ad. Annals Nat. Hist. 1860. 

 Hab. Mino-Sima. 



3. Parthenia littoralis, A. Ad. Annals Nat. Hist. 1861. 

 Hab. Tsu-Sima, on oysters, low water. 



4. Parthenia punctigera, A. Ad. Annals Nat. Hist. 1860. 

 Hab. Gotto ; Sado. 



5. Parthenia semiplicata, A. Ad. (Chrysallida seraiplicata. Annals, 1860). 

 Hab. Gotto; 0-Siina; Takano-Sima. 



6. Parthenia pusio, A. Ad. (Chrysallida pusio, Annals Nat. HJs^.'^1861). 

 Hab. Tsu-Sima ; 0-Sima. 



7. Parthenia pagodula, A. Ad. (Tm'bonilla monocycla, A. Ad. Annals 

 Nat. Hist. 1860). 



Hab. Mino-Sima; Taku-Sima; Takano-Sima. 



8. Parthenia foveolata, A. Ad. Annals Nat. Hist. 1860. 

 Hab. Mino-Sima. 



9. Parthenia cjelata, A. Ad. 



M. testa pyramidato-turrita, alba, solida; anfractibus normalibus 8, pla- 

 natis, longitudiualiter costatis, costis rectis, interstitiis valde punctatis ; 

 cingula transversa, conspicua, ad suturas ornatis ; anfractu ultimo ad 

 peripheriam angulato, basi cingulis tribus, validis, concentricis instructo ; 

 apertura subquadrata, plica columellari transversa, conspicua, acuta. 

 Hab. Seto-Uchi; Akasi ; Tsu-Sima. 



This is a very regular, strongly-marked species, found principally at 

 Akasi, in the Inland Sea. The form is elongately pyramidal, and the 

 whorls are ribbed and Urate, the lower portions being encircled with a 

 concentric elevated zone, and the last whorl at the base being furnished 

 with three similar zones. 



Gen. Ptegulina, A. Ad. 



Testa tenuis, ovato-turrita ; anfractibus spiratis, postice angulatis, 

 longitudinaliter plicatis. Ajjertura ovata ; labro margine postice 

 angulato. 



1. Pyrgulina casta, A. Ad. (Chrysallida casta. Annals Nat. Hist. 1861. 

 Hab. Takano-Sima. 



2. Pyrguhna Minna, A. Ad. (Chrysallida Minna, Annals, 1860.) 

 Hab. Mino-Sima; Gotto, 



3. Pyrgulina Brenda, A. Ad. (Chrysallida Brenda, Annals, 1860). 

 Hab. Takano-Sima; 0-Sinia. 



4. Pyrgulina elegantula, A. Ad. (Chrysallida elegantula, Annals, 1860). 

 Hab. Mino-Sima ; Seto-Uchi. 



