THE NOMENCLATURE 



CONCHOLOGY. 



UNIVALVES. 



THE SEVERAL PARTS OF UNIVALVE SHELLS, 

 WITH THEIR SPECIFIC MARKS, FORMS, AND 

 DISTINCTIONS. 



LATIN. ^^T ,1 „ 



Anfractus. The Wreaths or Whorls; the 

 circumvolutions of the spire around the 

 Columella, are either 



ancipites. Two-edged; longitudinally carinate at 

 the sides, or 



bijidi. Bifid; divided transversely by a line or 

 furrow, as it were, by a suture. 



canaliculati. Channeled ; having a small exca- 

 vated channel along the suture. 



