Mr. A. Adams on new Mollusca from China and Japan. 241 



solete striata; spira elata ; anfractibus 3£, rotundatis, suturis pro- 

 fundis ; apertura subcirculari ; peristomate vix continuo. 



Hab. Gulf of Pe-ehili j 7 fathoms. 



2. Rissoella consobrina, A. Adams. 



R. testa helicoidea, profunde umbilicata, ventricosa, alba, tenui, laevi, 

 pellucida ; spira brevi, acuta ; anfractibus 3\, convexis, ultimo 

 magno, suturis mediocribus ; apertura subcirculari ; peristomate 

 vix continuo. 



Hab. Shan-tung (Lo-shan-kow). 



Genus Stylopsis, A. Adams. 

 Stylopsis sulcata, A. Adams. 



S. testa subulata, alba, opaca ; anfractibus normalibus 13, planu- 

 latis, sulcis duobus transversis instructis, suturis profundis, exa- 

 ratis ; anfractu ultimo ad peripheriam rotundato, sulcis tribus 

 transversis instructo ; apertura subquadrata ; labio recto, simplici ; 

 labro margine regulariter arcuato. 



Hab. Sea of Okhotsk ; 17 fathoms. 



This is a second species of Stylopsis, a genus most like Syr- 

 nola, but wanting the columella!* fold. The present species may 

 be known from S. typica, A. Adams, by the last whorl being 

 rounded, and not angulated, at the periphery, and in being fur- 

 nished with three transverse grooves. The other whorls have 

 two grooves each. 



Genus Leucotina, A. Adams. 



Leucotina sulcata, A. Adams. 



L. testa alba, solida, ovato-conica, umbilicata ; anfractibus 3^, plani- 

 usculis, transversim valde sulcatis, sulcis obsolete punctatis ; 

 apertura oblonga ; labio rectiusculo, plica evanida instructo. 



Hab. Korea Strait ; 46 fathoms. 



L. niphonensis, A. Adams, is the nearest to this species, from 

 which, however, it differs in being more conoidal, shorter, and 

 broader; the transverse obscurely punctate grooves, moreover, 

 are very deep, and the umbilicus is conspicuous and open. 



Genus Myonia, A. Adams. 



1. Myonia elegans, A. Adams. 



M. testa subulata, tenui, semiopaca, gracili ; anfractibus G, convexi- 

 usculis, transversim sulcatis, sulcis obliquis, distantibus, punctatis ; 



Ann. cV Mag. N. Hist. Ser. 3. Vol. viii. 16 



