Recent Species of Ovuhim. 149 



f Testa ovata, alba . . sp.lb ohtumm. 



17 s 



l Testa oblonga, rubeseente sp.lQ Semtnulum. 



C Plica superiore columellari obliqua 19 



18 S 



( Plica indistincta vel nulla 22 



( Testa subcylindrica 20 



19 1 



C Test^ ovato-fusiformi 21 



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



20 1 . 



( Apice superiore mucronato sp. \S Secale. 



^ Labio extemo infra subangulato sp. \9 Spelta. 



21 < 



( Dorso obtuse angulato *p. 20 intermedium. 



C Rostris breviusculis sp. 21 birostre. 



22 s 



C Rostris longioribus 23 



C Testae corpore fiisiformi sp. 22 longirostratum. 



23 < 



( Testse corpore ovato sp. 23 Volva. 



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



24 < 



I Testa ventricosa, margine acuto sp. 25 patulum. 



OvuLUM Ovum, 

 Sowerby's Genera, No. II. 



O. testd ovato-inflatd, medio ventricosa, politd, lacted ; extremitatibus 



prominulis, subtruncatis ; fance aurantiaco-hrunned ; long. 3j%, lat. 



2,*^, poll. 



Bulla Ovum, nonnull. 



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



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

 coso instructo ; long, exempl. minor. 1^%, lat. y\, poll* 

 exempl. majusc. 2-^\, lat. l-^^, poll. 



Hab. in Oceano Indico. 



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

 briUiantly 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 mner lip 



