398 



MR. Gr. B. SOWEEBY ON 



tissime umbilicatus, spiraliter liratus, liris 8 (lira minima interveniente) 

 rugosiusculis ; columella leviter sinuata, laevigata ; apertura subquadrata, 

 intus argentea. 



Alt. 19, maj. diam. 15 millim. 



A single specimen, locality unknown. 



Amathina imbeicata, sp. nov. (PI. XXV. figs. 12, 13.) 



Testa elongato-subtrigonajinsequilatera, sordide alba, utrinque angulata, 

 postice ineurvata ; dorso leviter concavo, laminis rugosis transversis partim 

 tubulosis sculpto, margine sinistrali bicarinato, dextrali unicarinato, 

 lateribus corrugatis, dextra concava, sinistra planulata ; apice minutissimo ; 

 apertura oblonga, antice quadrata, postice rotundata. 



Long 13, maj. diam, 7, maj. alt. 5 millim. 



ITab. Mauritius. 



This species differs from the type (Amathina tricarinatd) in 

 several particulars. Of the three keels, two are close together 

 on the left dorsal margin, and the broad space between these and 

 the right keel is curiously laminated and corrugated. A single 

 specimen of this interesting shell has been sent me from Mauritius 

 by M. V. de Eobillard. 



COCHLOSTYLA (AxINa) GrLOYNEI, Sp. UOV. (PI. XXV. figS. 16, 



17.) 



Testa globoso-depressa, imperforata, solidiuscula, nigro-fusca, ad apicem 

 pallida, epidermide albida hydrophana, in strigis obliquis et fasciis trans- 

 versis dispositis pulcherrirae ornata ; spira convexa, apice obtusa ; an- 

 fractus 6, convexiusculi, lente accrescentes, oblique striati, sutura impressa 

 sejuncti ; anfractus ultimus subinflatiis ad peripheriam obscurissime 

 angulatus, superne et inferne convexus ; columella brevissima, albida, 

 obhque recta ; apertura parviuscula, transverse oblonga, leviter arcuata, 

 ubique subsequaliter lata, intus purpurea ; labrum arcuatum, tenuiter 

 reflexum, leviter complanatum, purpureum, fusco limbatum. 



Maj. diam. 33, alt. 24 millim. ; apert. long. 15, lat. 6 miUim. 



Hdb. Philippine Islands. 



A single specimen, in perfect condition,, of this interesting 

 shell is in the collection of Mr. C. P. Grloyne. The whitish 

 diaphanous epidermis in oblique streaks and transverse bands 

 relieves the plain dark-brown colour of the shell, which, though 

 not particularly remarkable in form, differs considerably from its 

 congeners. 



Oethalicus MacAndrewi, sp. nov. (PL XXV. fig. 18.) 



Testa elongata, griseo-fulva, fusco zonata et strigata, hie illic nigro 

 radiata j apice obtusiuscula, griseo-lilacea j anfractus 8|^, regulariter 

 accrescentes, convexiusculi, longitudinaliter leviter striati, sutura impressa 



