FRESHWATER AND LAND SHELLS. 85 



BuLiMus GiBBONius. Plate XXIII. fig. 99. 



Testa ovatd, verdricosd, perforatd, subcrassd, granosd, tenebroso-fusca, atro-maculata ; 

 anfradibus quints, uUimo magno; aperturd purpurea, magna, obliqua; labro reflexo; columella 

 albida. 



Shell ovate, ventricose, perforate, somewhat thick, granose, dark brown, black ma- 

 culate; whorls five, the last being large ; aperture purple, large, oblique ; outer lip re- 

 flexed ; columella whitish. 



Hab. New Granada, between La Plata and Tocaima. J. H. Gib- 

 bon, M. D. 



My Cabinet. 



Diam. 2'4, Length 3' 6 inches. 



Remarks. — I owe the possession of this fine shell to the kindness of 

 Dr Gibbon, who obtained it during his expedition to the Pacific Ocean, 

 by Panama; and to him I dedicate it. It is remarkable for its dark 

 colour, the substance of the shell being of a dark purple. The spots 

 are dark, small, irregular and indistinct, and the surface irregularly pit- 

 ted and minutely granulate. The body-whorl is about five-sixths the 

 length of the shell, the superior whorls being darker, and having a 

 white indistinct line along the suture. The apex is pointed. 



BuLiMUS GRACILIS. Plate XXin. fig. 102. 



Testa subfusiformd, nitidd, subperforata, albida, triviitata, longiiudinaliter striata; an- 

 fradibus planulatis ; aperturd ovatd ; labro reflexo ; columella Ixvi, purpurea. 



Shell subfusiform, shining, subperforate, whitish, with three imperfect bands, longi- 

 tudinally striate ; whorls flattened ; aperture ovale ; outer lip reflexed ; columella 

 smooth and purple. 



Hab. near Carthagena, S. A. J. H. Gibbon, M. D. 



My Cabinet. 

 Diam. -6, Length 1-4 inches. 



VI. — w 



