98 UNIVALVES. BUCCINUM. 



the other species, as the B. subulatum and B. crenulatum, 

 are very beautiful. 



The B. sinuatum and the B. virgineum are fresh water 

 species. 



The African, American, Indian, European, and South- 

 ern oceans produce the greater part of the species; many 

 are found on the British shores ; and also some few in the 

 Mediterranean. 



This genus derives its name from some of its species be- 

 ing formed like a trumpet. 



BUCCINUM Whelk. 

 DIVISION I. SHELL INFLATED, ROUNDED, THIN, SLIGHTLY 



TRANSPARENT AND BRITTLE. 



FAMILY 1. Aperture without teeth. 

 Olearium Tun. Perdix Partridge. 



Galea Brown. Dolium Spotted. 



Caudatum Beaked. 



FAMILY 2. Outer lip toothed. 

 Sulcosum Flat-ribbed. Chinense Chinese. 



DIVISION II. SHELL OVATE, RIBBED, APERTURE RATHER 



CONTRACTED, PILLAR-LIP THICKENED AND STRONGLY 

 WRINKLED, AND OUTER LIP TOOTHED, THICKENED, AND 

 MARGINATED. 



Pomum ThicJc-lipp'd. Ringens Grinning. 



DIVISION III. SHELL WITH TUBERCULATED BELTS OR RIBS, 



PILLAR-LIP SPREAD, AND BEAK MUCH PRODUCED 

 AND REFLECTED. 



Echinophorum Tuberculated Nodosum Belted, 

 fun. Rugosum Rugged. 



