THE NOMENCLATURE 

 CONCHOLOGY. 



UNIFALFES. 



THE SEVERAL PARTS OF UNIVALV^E SHELLS WITH 



THEIR SPECIFIC MARKS, FORMS, AND 



DISTINCTIONS. 



LATIN. 



Anfractus. The Wreaths or Whorls ; the 

 circumvolutions of the spire around the 

 Cokimella, are either 



ancipiles. Two-edged; longitudinally carinate at 

 the sides, or 



I'tfidi. Bifid ; divided transversely by a line or 

 furrow, as it were, by a suture. 



caiiallculati. Channelled ; having a small exca- 

 vated channel along the suture. 



