GENUS BUCCINUM. 29 



moderate size, narrowed at the base, forming at its upper part 

 a canal, with a sinus bounded by two teeth behind ; columella 

 smooth, almost straight, with two fold-like guttules at its ter- 

 mination ; right lip denticulated, and folded internally. 



Length 8 lines. Width 4 lines. 

 Inhabits New Holland, and the Island of Tonga-Tabou. 



De Blainville, in the 1st volume of the Nouvelles Annales du 

 Museum, page 254, pi. 12, fig. 9, has united this pretty little 

 shell to the genus PURPURA, under the name of PURPURA glimna. 

 Quoy and Gaimard, who brought it from the island of Tonga- 

 Tabou, figured it about the same time in their Voyage autour 

 du Monde, pi. 30, fig. 23, 25, under the name of BUCCINUM dis- 

 color ; we have retained the place and the name given it by 

 these voyagers. 



30. BUCCJNUM Jp.riAINVILI.il, DESK. Blainmlle's Buccinum. 

 (Collect. MASS.) CHEMN., pi. 125JJ&J201 -2. / 



TJT "VT C. . OO 



r i. Ai, ng. oo. 



B. testa ovata, elongata, albescente ; spira acuta, cancellata, costulis lon- 

 gitudinalibua et striis transversis decussata ; anfractibus angustis, in medio 

 carinatis ; apertura ovata, violascente ; columella rufescente ; labro dextro 

 intua tenue striato. 



Shell ovate, elongated, of a yellowish white ; spire pretty 

 elevated, pointed, latticed ; composed of six or seven rounded 

 whirls, slightly compressed, furnished with numerous, longitu- 

 dinal folds or small ribs, crossed by acute and very fine re- 

 volving striae ; one of these striae is more raised, and forms a 

 keel upon the middle of each whirl, composed of a row of tu- 

 bercles. The lowest whirl is more developed, and larger 

 than all the others united ; the keel of this is situated nearer 

 the upper part. The aperture is ovate, elongated, slightly 

 .narrowed, of a violet-brown within. The columella is red- 

 dish, and marked with two brown spots ; at its base there is a 



