89 



BUCCINUM. 



A. Inflated, rounded, thin, subdiaphanous, and 



brittle. (Plate XVI. Fig. 1.) 



B. With a short exserted reflected beak : lip 



unarmed outwardly. (Fig. 2.) 



C. Outer lip prickly on the hinder margin : in 



other respects as B. (Fig. 3.) 



D. Columellar lip dilated and thickened. 



(Fig. 4.) 



E. Columellar lip appearing as if worn flat. 



(Fig. 5.) 



F. Smooth, and not enumerated in the former 



divisions. (Fig. 6.) 



G. Angular, not previously enumerated. (Fig. 7.) 

 H. Tapering, subulate, smooth. (Fig. 8.) 



Shell univalve, spiral, gibbous. Aperture ovate, 

 ending in a canal turned to the right, i. e. from 

 the exterior lip, with a short rostrum or beak. 

 Interior lip flattened. 



The numerous divisions of this genus include 

 necessarily a great variety of shells, yet all agree- 



