KOMENCLATURE. 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 emarginate, 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. 



ablreviala. Abbreviated j shorter than the lower 

 whorl. 



tlausa. Closed ; having the edges of the canal 

 meeting, or nearly so. 



elongata. Elongated ; longer than the body. 



explanata. Plain ; dilated at the margins. 



iruncata. Truncate ; cut o(r transversely. 

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