1867.] MR. A. ADAMS ON NEW JAPAN SHELLS. 311 



1. OSCILLA LIRATA, A. Ad. 



Odostomia (Evalea) lirata, A. Ad. Annals, 1860. 

 Hab. Sado ; 0-Sima ; Seto-Uchi ;. Tsu-Sima. 



2. OSCILLA SULCATA, A. Ad. 



Odostomia (Evalea) sulcata, A. Ad. Annals, 1860. 

 Hab. Tsu-Sima ; Mososeki. 



3. OSCILLA CINGULATA, A. Ad. 



Monoptygma cingulata, A. Ad. Annals, 1861. 

 Hab. Takano-Sima. 



4. OSCILLA ANNULATA, A. Ad. 



Obeliscus annulatus, A. Ad. ; Sow. Thes. Mon. Obeliscus, pi. 171. 

 f. 26. 



Hab. Mososeki ; Yobuko. 



5. OSCILLA CIRCINATA, A. Ad. 



0. testa elongato-ovata, 7'imata, tenuiuscula, alba, semiopaca; 

 anfractibus normalibus 5, plants, cingulis transversis angus- 

 tis elevatis regularibus ornatis, interstitiis longitudinaliter 

 concinne stfiatis ; aperfura oblonga ; plica parietali valida, 

 acuta, mediana, transversa; labro margine crenulato, intus 

 sulcata. 



Hab. 0-Sima ; Takano-Sima. 



A very pretty semipellucid species, delicate in texture and neatly 

 sculptured. 



Genus Amaurella, A. Ad. 



Testa parva, ovata, imperforata, alba, nitida, apice submamillato ; 

 apertura acuminato-ovata ; labio arcuato, simplici, subincras- 

 sato. 



This little group of Japanese Mollusca will include a remark- 

 able shell I described as Macrocheilus japonicus, but which ap- 

 pears to have greater affinities with Amaura. I now add diag- 

 noses to two other shells, which seem to belong to the same type of 

 form. 



1. Amaurella glabrata, A. Ad. 



A. testa ovata, imperforata, solidiuscxda, alba, semiopaca, Icevi, 

 nitida ; anfractibus 3, planiusculis, ultimo elonguto, amplo ; 

 apertura oblonga, antice producta, subacuminata ; labio sim- 

 plici, arcuato, subincrassato. 



Hab. Takano-Sima. 



2. Amaurella semistriata, A. Ad. 



A. testa ovata, imperforata, solidula, semiopaca, alba, nitida. 



