UNIVALVES BUCCINUM. 115 



The B. maculatum, which is often nine or ten inches 

 long-, may be adduced as an illustrative specimen. 



Many of the species are extremely rare; but the most 

 beautiful and valuable is the B. costatum. 



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

 ern oceans, produce the greater number of Buccina, and 

 many are found in the British and Mediterranean Seas. 



This genus derives its name from some of its species 

 being formed like a trumpet (Buccinum). 



Division I. — Shell inflated, rounded, thin, slightly transparent 

 and brittle. 



Family 1. — Aperture without teeth. 



Scientific Name. Locality. Common Name. 



Olearum East Indies, China Tun 



Galea Mediterranean Brown Tun 



Perdix America, South Seas, 



Aniboyna Partridge ■ • do • • 



Dohuni Mediterranean, Amboyna Spotted • • • do • • 



Caudatuni Beaked • • • do • • 



Family 2. — Outer lip toothed. 



Sulcosum Coromandel, China Flat ribbed do • • 



Chinense China, Java Chinese • • do • ■ 



Divisioiv II. — Shell ovate, ribbed, aperture rather contracted, pil- 

 lar lip thickened and strongly wrinkled, and outer lip toothed, 

 thickened, and marginated. 



Pomuni Amboyna, China Thick lipp'd do 



Ringens Grinning • do •• 



12 



