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GENUS BUCCINUM. 



SPECIES WITH THE APERTURE ROUNDED, AND A VERY PROMINENT 

 CALLOSITY. 



Cassis-formed Nassa. 



B. gemmulatum, Lam. The pearled Buccinum. 



abbreviatum, Wood. tun 



retusum, Lam. blunt 



mutabile, Linn., Gmel. girdled 



ruf ulum, Nobis. reddish 



pauperatum, Lam. meagre 



marginulatum, Lam. margined 



polygonatum, Lam. polygon 



muricatum, Quoy et Gaim. spinous 



subspinosum, Lam. subspinous 



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 Nassce. 

 B. neritotdeum, Linn., Gmel. The nerita-formed Buccinum. 



