569 



versim striata ; spira flepressa, anfractibus quatuor ; apertur^ 

 lineari, in medio coarctata, antice dilatata ; labro postice producto, 

 parum recedente, in medio inflexo, anticfe tuberculo unico ; colu- 

 mella uniplicata. 



Shell cylindrical, apex subtruncated, white, solid, shining, trans- 

 versely striated ; spire depressed, whorls four ; aperture Knear, 

 contracted in the middle, anteriorly dilated ; outer lip posteriorly 

 produced, a little receding, reflexed in the middle, anteriorly 

 with a single strong tubercle ; columella with a single plait. 



China Sea. Mus. Cuming. 



21. Bulla olivula (pi. cxxi. f. 34), Adams. 



B. testa cylindrico-fusiformi, solida, alba, nitida, striis punctato- 

 undulatis, spiralibus, transversim sculpta ; spir^ elevato-acuminata, 

 anfractibus quinque, sutura angusta, lamina spirali vix manifesta ; 

 apertura lineari, antice dilatata, labro in medio subinilexo ; colu- 

 mella arcuata, ad basin valde uniplicata. 



Shell cylindrical, fusiform, solid, wliite, shining, transversely 

 engraved mth punctated undulating spiral striae; whorls five, 

 suture narrow, spiral lamina hardly visible ; aperture Linear, 

 dilated anteriorly, outer lip somewhat inflexed in the middle ; 

 columella arched, with a single strong plait at the base. 



West Indies. Mus. Cuming. 



22. Bulla cinctella (pi. cxxi. f. 35), Adams. 



B. testa cylindrico-fusiformi, apice acuminata, sublsevi, semi- 

 pellucida, longitudinaliter sulcata, fasciis duabus, albis, spiraHbus 

 cincta ; spira acuminata, anfractibus quatuor, primo prominente ; 

 apertura angusta, antice dilatata ; columella pHca valde distincta ; 

 rima umbihcah profunda. 



Shell cylindricaUy fusiform, apex acuminated, rather smooth, 

 semipeUucid, longitudinally sulcated, encircled with two wliite 

 spiral bands ; spire acuminated, whorls four, the first prominent ; 

 aperture narrow, anteriorly dilated ; columella with a very distinct 

 plait ; umbilical fissure deep. 



China Sea. Mus. Cuming. 



23. Bulla gracilis (pi. cxxi. f. 36), Adams. 



B. testa cylindrico-fusiformi, gracili, semipellucida, cornea, 

 vertice acuminata, transversim striis minutissimis spirahbus 

 sculpta ; spira producta, acuminata, anfractibus quatuor, primo 



