232 MARINE SHELLS 



on the middle, and the third rather darker, at the ori 

 gin of the beak ; suture regular aud deeply impress- 

 ed ; beak distinguished by a profound depression, 

 from the body whirl, slightly reflected ; labrum not 

 incrassated, with raised lines within upon the fauces 

 which do not extend quite to the edge of the lip ; la- 

 bium distinctly lamellar, with an obsolete fold of the 

 basal edge, and a tooth near the superior junction 

 with the labrum. 



Length about 7-10 of an inch. 



Inhabits the middle and southern states. 



Cabinet of the Academy and Philadelphia Mu- 

 seum. 



A very common species. 



It somewhat resembles Maton and Rackett's figure 

 of Buccinum macula, (Linn. Trans. Lond. vol. 8.) 

 in the cancellated appearance, but it is a longer shell 

 and destitute of the incrassated aperture. This spe- 

 cies is closely allied to the genus Phos of Montfort, 

 by the striated labrum, and the projection or slight 

 fold at the base of the columella, but it has no ap- 

 pearance of umbilicus, a character, which, in the 

 system of that author, is an essential one. 



3. N. *obsoleta. Shell ovate-conic, subacute, can- 

 cellate, exhibiting a granulated appearance, dark 

 reddish-brown, or blackish, sometimes tinged with 

 olivaceous ; spire shorter than the body ; suture not 

 deeply impressed ; beak not distinguished from the 

 body whirl by any profound depression, and not 

 prominent; labrum within lineated with elevated. 



