Recent Species of Oimlutn. 149 



( Testa ovata, alba sp. \5 obtiLSum» 



C Testa oblonga, rubescente sp. \6 Seminulum. 



C Plica superiore columellari obliqua 19 



18 1 



C Plica indistincta vel nulla 22 



C Testa subcylindrica 20 



C Test4 ovato-fusiformi 21 



C Testa minima, apice superiore subacute . sp, 17 formicarium, 



C Apice superiore mucronato sp. IS Secale, 



C Labio extemo infra subangulato sp. 19 Spelta. 



I Dorso obtusi angulato sp. 20 intermedium. 



C Rostris breviusculis . 50. 21 birostre, 



C Rostris longioribus 23 



C Testae corpore fusiform i ^jo. 22 longirostratum. 



23 i 



i Testae corpore ovato . . . . sp. 23 Volva. 



C Testa cylindrica, margine subacute . . . sp. 24 aciculare. 



Testa ventricosa, margine acuto . . ... sp. 25 patulum. 



24 < 



OvuLUM Ovum, 

 Sowerby's Genera, No. II. 



0. testa ovato-iriflatd, medio ventricosd, politd, looted ; extremitatibus 



prominulis, subtruncatis ; fauce aurantiaco-brunned ; long. 3y^o> ^<*'' 



2,-V,jDo//. 



Bulla Ovum, nonnull. 



Ovula Oviformis. Lam., Aiiim. sans. vert. VII. 366. 



Var. pygmaea, testa incrassata, dorso utrinque sulco terminali cicatri- 

 coso instructo ; long, exempl. minor, ly'^, lat. yV) poU- 

 exempl. majusc. 2-j%, lat. lyV, poll. 



Hab. in Oceano Indico. 



Desc. The largest and handsomest species of the genus. Shell 

 brilliantly polished, milk-white, egg-shaped, both extremities prominent, 

 slightly truncated ; outer lip much thickened, irregularly crenulated on 

 its inner edge ; inside of a rich orange brown; a fold of the innef lip 



