FRESHWATER AND LAND SHELLS. 83 



in outline. It cannot easily be confounded with any of the described 

 species of Jridina. It is a small species, and may be distinguished at 

 once by its dark ebony epidermis, and beautiful blue and iridescent 

 nacre. In none of the specimens which I have seen, is there the least 

 disposition to crenulation on the dorsal margin. On the carina there 

 is a small line below, and nearly parallel to the dorsal margin. 



BuLiMUS GLANDiFORMis. Plate XXIII. fig. 92. 



Testa ovata, rugosa, subinflatd, imperforata, suhcrassa, granosa, rufo-fuscd, albo-macu- 

 latd ; anfractibus quaternis, ultimo magna; apertura purpurea, ovala, submagna ; labro re- 

 flexo ; columella Ic&vi. 



Shell ovate, rugose, somewhat inflated, imperforate, rather thick, granose, reddish 

 brown, white spotted ; whorls four, the last being large ; aperture purple, ovate, rather 

 large ; outer lip reflexed ; columella smooth. 



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

 bon, M.D. 



My Cabinet. 

 Diam. -7, Length 1-3 inches. 



Remarks. — This species is about the size of and somewhat resembles 

 an acorn. Its rugosity is owing to the surface being covered with nu- 

 merous small pits. The spots are few, and placed nearly at the termina- 

 tion of the last whorl. On the same whorl, further removed from the 

 tip, there are numerous indistinct white marks. The body-whorl is 

 about five-sixths the length of the shell, the superior whorls being lighter, 

 and having a dark indistinct line along the suture. The apex is obtuse, 

 and the reflected lip white and rounded like a cord. I am indebted 

 to Dr Gibbon for this species, obtained during his recent travels in New 

 Granada. 



