22 



laris, ubiqiie strlls confertis tenuissimis cincta ; anfr. 4 depresso-con- 

 vexis cito crescentibus ; basi convexo, imperforato, callo copioso 

 munito : apertura parva, circularis. Diam, 4 ; axis, 2 millim. In- 

 habits China Coral Seas. W. S. 



CoLLONiA QUAXTiLLA. T. minuta, solida, depresso-orbicularis, 

 rosacea snlcis paUidioribus circ. 4 cincta ; anfr. 4 vix convexis, peri- 

 pheriii obtusfi ; basi convexo, pallidiore, arete perforato : apertura 

 circularis ; labro crasso ; columelhi robusta declivi. Diam. 3 ; axis, 2 + 

 millim. Inhabits Simon's Bay. W. S. 



Turbo amussitatus. T. globoso-conica, crassa, rufa ; anfr. 6 

 ventricosis, costis inequalibus irregularibus 6-8 et intermedianis exili- 

 bus 4-5 cinctis, costis oblique striatis ; basi concinne reticulato, per- 

 forato tandem callo occluso : apertura subcircularis ; columelhi ex- 

 pansa dupliei ; fauce margaritacea. Operculum osseum, paucisjDirale. 

 Axes, 12 millim. Inhabits ? 



Turbo nocturxus. T. parvula, globoso-conica, solida, rufo- 

 fuscescente et rosaceo alternatim strigata ; apice albo ; anfr. 5 con- 

 vexis, sulcis equalibus aratis ; sutura impressa ; basi convexo, im- 

 perforato, concentrice striato : apertura subcircularis ; columella 

 expansa, argentata, granulata, extus erecttl. Operculum osseum, 

 paucispirale, apice excentrico, extus granulato. Axes, 7 millim. In- 

 habits Simoda. "VY. S. 



Ch^na lagexula. T. elongata, arcuata, tenuis, lactea, postice 

 quadrangularis, antice declivis et in rostram protracta ; umbonibus 

 ventricosis ad quadrantem anticalem positis ; margine dorsali postica 

 recta ; marg. ventrali incurvata ; angulis posticis rotundatis ; facie 

 dorsali late ovato-cuneata, postice cito angustata ; facie ventrali ovata 

 omnino hiante. Long. 12 ; lat. 6 ; alt. 3 millim. Inhabits Hong Kong 

 harbor, 10 fathoms, shelly sand. W. S. 



Animal like that of Gastrochaena ; but the mantle envelopes all the 

 anterior portion of the shell, and also the anterior half of the ventral 

 margin. 



This shell belonging to the builder of the old Flstulana lar/emda 

 of Lamarck, has not heretofore been described, though the curious 

 flask-shaped enclosure has been familiar. The shell has the general 

 characters of that of Fistulana clava Lk, Chasna mumia Gray. 

 Still the ovate, curved form and the sculpture of the shell, and the 

 peculiar, artichoke-like or bulbous structure of the enclosing capsule, 

 made up of successive calcareous cups involving bits of shell and 

 sand, together with the proportions of the animal will, I think, 

 authorize a generic distinction. I would propose, In that case, 

 the name Cucurbitui.a, which at once expresses the cup-like ele- 

 ments and general gourd-like form. 



