402 Mr. A. Adams on new Species of Pelagic Mollusca. 



acute carinato. Apertura subquadrata ; labio recto, in spinam vel 

 rostrum antice producto. 



1. Alciope rostralis, A. Adams. 



A. testa trochiformi, vitrea, pellucida ; anfractibus 3\, convexiusculis; 

 suturis, peripberia et rostro rufo tinctis ; rostro mediocri. 



Hab. China Sea. 



2. Alciope spicata, A. Adams. 



A. testa trochiformi, semipellucida, nucleo magno nigricante ; anfrac- 

 tibus plauiusculis, ultimo acute carinato ; rostro recto, valde pro- 

 ducto, violascente. 



Hab. China Sea. 



Genus Sinusigera, D'Orbigny. 

 1. Sinusigera fusoides, A. Adams. 



S. testa ovato-fusiformi, alba, subopaca ; anfractibus tribus, ultimo 

 magno, in medio tumido ; apertura angusta ; labio recto, crasso, 

 antice producto, acuminato ; labro antice et postice sinuato, in 

 medio lobato. 



Hab. In the sea, east coast of China. 



2. Sinusigera bicarinata, A. Adams. 



S. testa ovato-turbinata, fusca, semipellucida ; anfractibus 3^, con- 

 vexis, lsevibus, ultimo bicarinato, basi cannula infra carinam infe- 

 riorem cincta ; apertura ovata ; labio brevi, antice abrupte truncato ; 

 labro margine in medio lobato, antice et postice sinuato. 



Hab. Indian Ocean. 



These species, like those I have hitherto described, appear to 

 be perfect adult shells with small nucleolar whorls and well- 

 developed outer lips. 



Genus Macgillivrayia, Forbes. 



Macgillivrayia perspicua, A. Adams. 



M . testa helicoidea, perforata, vitrea, leevi, nitida, pellucida ; spira 

 depressa, apice lutescente ; anfractibus 3, convexis, ultimo amplo, 

 superne subangulato ; apertura semiovata ; labio simplici, arcuato. 



Hab. China Sea. 



A small pellucid species, which, as shown by the operculum, 

 belongs to this genus. 



Genus Recluzia, Petit. 



Recluzia Bensoni, A. Adams. 



R. testa turbinata, tenui, pallide fulva, anguste umbilicata; spira 

 elata, acuta ; anfractibus A\ , convexis, transversim striatis lineis* 



