282 rUOOKKIMNGS OK TIIK MVl.AOOI.OlilOAl. SiOOlKIY. 



]fiib. — Siovni Looiio. 



Tlio ouly rooont spoeios hitbovto known of this gonus is P. Knochni, 

 Eaini. to wliioh the pivseut shell has not mnoh ivsembluuco, oxoepting 

 in one remavkahlo oharaotov. ivganlod as gonorio, viz., tho strong sinus 

 at tho base of tlie aperture ; the pixitoeoneh is also similar. 



Cosrs FrscoLixE.vxrs. Fig. 6. 



Testa ovato-turbinata. livvis, antice atteuuata, postiee rotundata. 

 albida. epideniiide Intea induta, liueis angustis, fuseis. transversis, 

 plus minusve interruptis. ornata, ad apioein maoulis grandibus, fuseis, 

 irregularibus, piota. Spira brevissime obtusa ; anfraetus baud oarinati. 

 Apertura mediocriter lata, intus purpureo-fuseo late trifasoiata. 



Long. 22. maj. diam. 12 mm. 



Hah. — Sierra Leone. 



In form this shell elosely resembles C. mercator, a well-known and 

 variable AYest Afriean speeies, but the pattern, consisting of dark 

 biwvn transverse lines, is entii'ely diftVreut from that of any of tlie 

 numerous varieties of that species. 



