570 



prominente ; apertura angusta, antice dilatata ; columella uni- 

 plicata. 



Shell cylindrically fusiform, slender, semipellucid, horn-coloured, 

 apex acuminated, transversely engraved with very fine spiral striae ; 

 spire produced, pointed, whorls four, the first prominent; aper- 

 ture narrow, dilated anteriorly ; columella with a single plait. 



China Sea. Mus. Cuming. 



24. Bulla fusiformis (pi. cxxi. f. 37), Adams. Tornatella 

 bullata, Kiener, Monograph. 



B. testa cylindrico-fusiformi, alba, lsevi, subpellucida, longi- 

 tudinaliter subsulcata ; spira elevata, acuminata, anfractibus 

 quinque, supra subcanaliculatis ; apertura lineari, in medio 

 coarctata, antice dilatata ; columella semiplicata, plica callosa ; 

 labro in medio inflexo. 



Shell cylindrically fusiform, white, smooth, semipellucid, longi- 

 tudinally somewhat sulcated; spire elevated, acuminate, whorls 

 five, somewhat channelled above; aperture linear, contracted in 

 the middle, dilated anteriorly ; columella slightly plicated, plait 

 callous, outer hp reflexed in the middle. 



China Sea. Mus. Cuming. 



25. Bulla simplex (pi. cxxi. f. 38), Adams. 



B. testa ovato-cylindrica, alba, nitida, solida, lsevissima, epider- 

 mide fusca tecta ; spira elevata, anfractibus quinque, ultimo 

 mammillato ; lamina spirali conspicua ; apertura angusta, antice 

 dilatata ; columella vix callosa, plica evanida. 



Shell ovately cylindrical, white, shining, polished, smooth, 

 covered with a fuscous epidermis ; spire elevated, whorls five, the 

 first one mammillated; spiral lamina conspicuous; aperture 

 narrow, dilated anteriorly ; columella slightly callous, plait 

 obsolete. 



Cagayan, Island of Mindanao, 35 fathoms; sandy mud. Cuming. 



26. Bulla polita (pi. cxxi. f. 39), Adams. 



B. testa ovato-cylindrica, superne rotundata, apice truncata, 

 alba, solida, nitida, infcrne transversim striata ; spira depressa, 

 anfractibus tribus, rotundatis, lasvibus ; apertura angusta, postice 

 producta, in medio subcoarctata, antice dilatata, labro in medio 

 subinflexo, incrassato ; columella plica valde distincta. 



