Genus BUCCINUM, Linnezus. 
THE BUCCINUM. 
Generic character. Shell ovate or ovate-conical. Avper- 
ture longitudinal, sometimes subrounded, deeply emarginated 
at its base, and without canal. Columella simple, not flat- 
tened, swollen above, and oftened covered with a wide and 
flattened calcareous callosity, of more diaphanous substance. 
There sometimes exists a fold at the base of the columella. 
Right lip quite thin, oftentimes recurved, and forming a margin 
on the exterior ; operculum horny, unguiform, of subconcen- 
tric elements, and oftentimes marginal. 
Testa ovata vel ovato-conica; apertura longitudinalis, aliquando subro- 
tundata, fortiter basi emarginata; canali nullo; superné turgida; labrum 
tenue, aliquandd recurvatum et marginatum; opercula cornea unguifor- 
mis, elementis subconcentricis, et sepé marginalis. 
Animal oval, the foot almost always considerable, shielded 
or two-lobed before, emarginated behind, bearing an opercu- 
lum ; mantle simple, provided with a branchial siphon, pro- 
jecting, thick, very long and dorsal, issuing from the emargi- 
nation at the base of the shell. Head rather thick, furnished 
with two conical, middling-sized tentacule, supporting the 
eyes upon the outer side, (sometimes the eyes do not exist, 
but this case is extremely rare). Mouth provided with a 
retractile trunk, armed with hooks. Sexes separate ; the ex- 
citing organ of the male considerable, without an exterior 
furrow at its base. 
Buccinum. A 
