28 Mr. Gray on some new Species of Quadrupeds and Shells. 



ventricose, rounded, with rather distant, acute, raised, narrow, 

 brown topped spiral ridges, and regular broad rounded plaits ; 

 canal subcylindrical, rather shorter than the spire ; inner lip 

 rather raised with a few slight plaits, outer lip crenated ; 

 throat grooved. Axis 2". — Sierra Leone. Brit. Mus. and 

 my cabinet. 



Fusus niveus, Gray. Shell ovate, fusiform, regularly and 

 closely spirally grooved ; spire conical ; whorls with a sub- 

 posterior series of nodules and shelving to the suture ; apex 

 small, subcylindrical, blunt ; canal short, rather oblique, in- 

 ner lip rather thickened, smooth ; throat grooved. Axis 15"\ 

 — Sierra Leone. My cabinet. 

 S v /^~rvpe£ Nassa vitrea, Gray. Shell ovate, turreted, transparent, 

 w with distant spiral striae ; whorls with equidistant nodulose 

 varices, and a subanterior brown spiral band ; outer lip thick- 

 ened, white, with a brown spot in front. Axis 5'". — Sierra 

 Leone. Brit. Mus. and my cabinet. 



Cardium lave, Gray. Shell ovate-cordate, ventricose, pale 

 brown, reddish spotted, smooth, with thirty to thirty-one very 

 indistinct flat radiating ribs ; lozenge smooth ovate-lanceolate. 

 Very like Cardium Icevigatum, but more ventricose. — Sierra 

 Leone. Brit. Mus. 



Turbinella spinosa, Gray. Shell fusiform, white, covered 

 with a smooth brown periostracum ; whorls 7> upper ones 

 with a series of conical tubercles, the last with distinct spiral 

 ridges and a subposterior series of conical spires ; canal sub- 

 cylindrical with the mouth about as long as the spire ; throat 

 ridged; pillar with three very slight plaits. Axis 15"'. — Sierra 

 Leone. My cabinet. 



Drillia, Gray. (Pleurotomina.) Shell turreted ; mouth 

 oval, linear; inner lip thickened, outer lip inflexed, thickened 

 behind, with a deep thick-edged posterior sinus, and a small 

 sinus in front, just before the short rather recurved canal. 



Drillia umbilicata, Gray. Shell white, closely and spirally 

 striated; spire acute, half as long again as the mouth; whorls 

 slightly raised, with a series of transverse compressed tuber- 

 cles, the last with 6 or 7 larger tubercles ; axis umbilicated; 

 lips sharp-edged; mouth reddish white. Axis 15'". — Sierra 

 Leone. Brit. Mus. and my cabinet. 



Drillia clathrata, Gray. Shell dark brown, closely and spi- 



