NOMENCLATURE. 
1 / 
papillaris. Papillary : opposed to acute, having 
the apex semi-globular. 
Articuli. Joints; the parts of the whorls, in 
some of the Nautili, between the genicula. 
Basis. Base ; the opposite extremity to the 
apex ; in some shells that part of the belly 
which is next the aperture, in others the 
very lowest point of the beak. In this 
sense it is either emarginatef indented by 
a deep canal, or entire, without indenta- 
tion. 
Canalis. Canal; a continuation or prolonga- 
tion of the aperture along the beak, which 
forms a gutter by the involution of its sides. 
Cauda, Rostrum. Beak ; the elongated bases 
of the belly, lips, and columella. 
ahhreviata. Abbreviated ; shorter than the lower 
whorl. 
clausa. Closed ; having the edges of the canal 
meeting, or nearly so. 
elongata. Elongated ; longer than the body. 
explanata. Plain : dilated at the margins. 
tnmcata. Truncate; cut off transversely. 
c 
