104 GENUS BUCCINUM. 
SPECIES WITH THE APERTURE ROUNDED, AND A VERY PROMINENT 
CALLOSITY. 
Cassis-formed Nasse. 
B. gemmulatum, Lam. The pearled Buccinum. 
— abbreviatum, Wood. — tun 
a retusum, Lam. — blunt 
‘al mutabile, Linn., Gmel. — girdled 
— rufulum, Nobis. — reddish 
— pauperatum, Lam. — meagre 
— marginulatum, Lam. — margined 
— polygonatum, Lam. — polygon 
— muricatum, Quoy et Gaim. — spinous 
— subspinosum, Lam. — subspinous 
a arcularia, Linn., Gmel. — casket 
— pullus, Linn., Gmel. — russet 
— coronatum, Brug. — crowned 
— Thersites, Brug. — Thersites 
— graniferum, Nobis. — grain-bearing 
— clathratum, Nobis. — latticed 
— gibbosulum, Linn., Gmel. — gibbous 
ANOMALOUS SPECIES, SEMI-ORBICULAR, DEPRESSED. 
Cyclops-formed Nasse. 
B. neritofdeum, Linn., Gmel. 
The nerita-formed Buccinum. 
