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



bus 4|-, convexis, supremis transversim obsolete striatis ; suturis 

 marginatis ; peritremate continuo ; anfractu ultimo ad aperturam 

 concentrice striato. 

 Hub. Estuary of the Pei-ho. 



2. Stenothyra gibba, A. Adams. 



S. testa ovato-subtrigonali, compressa, semiopaca, pallide lutea, au- 

 rantio tincta ; anfractibus 4v, convexis, gibbosis, transversim stri- 

 atis, striis obsolete punctatis. 



Hob. Hulu-Shan, Gulf of Lian-tung; banks of rivulets. 



Genus Tomichia, Benson. 



1. Tomichia Bensoni, A. Adams. 



T. testa rimata, epidermide rufo-fusca obteeta ; spira elata, apice 

 truncato ; anfractibus 4, convexis, longitudinaliter strigosis ; aper- 

 tura ovato-elliptica ; peristomate continuo, incrassato, extus sub- 

 varicoso. 



Hab. Matsumai; Yesso. 



2. Tomichia japonica, A. Adams. 



T. testa rimata, epidermide olivacea obteeta ; spira elata, apice trun- 

 cato ; anfractibus 3J, convexiusculis, longitudinaliter strigosis, 

 lineis virido-fuscis transversis ornatis ; apertura ovato-elliptica ; 

 peristomate continuo, duplicato, interno recto, subacuto, externo 

 valde incrassato. 



Hab. Sado. 



This species differs from T. Bensoni in being smaller and 



shorter, with the whorls less convex, and in the peritreme being 



double, the outer thickened and continued round the base. 



Genus Cecina, A. Adams. 



Tentacula lobiformia, plana, apicibus obtusis rotundatis. Ocnli 

 magni, nigri, non prominentes, sine pupillis, ad basin externam 

 tentaculorum positi. Rostrum elongatum, cylindricum, annu- 

 latum. Pes brevis, oblongus, utiinque rotundatus. 



Operculum ovatum, corneum, subspirale. 



Testa impcrforata, subcylindrica, epidermide olivacea obteeta ; apica 

 obtuso, eroso, non truncato ; anfractibus planis, lrevibus. Apertura 

 ovata, verticali, antice rotundata, postice acuminata ; peritremate 

 continuo, vix incrassato ; labro flcxuoso, in medio subproducto. 



Cecina manchurica, A. Adams. 



0. testa subcylindrica, imperforata, epidermide olivacea obteeta ; apice 

 obtuso, eroso ; anfractibus 4 -J, planis, lsevibus ; suturis obliquis ; 

 apertura ovata ; labio vix incrassato ; labro in medio subdilatato. 



Hab. Olga and Vladimir Bays, Manchuria (under damp logs 

 near the sea). 

 The nearest approach I can find to this animal is Truncatella ; 





