64 GENUS BUCCINUM. 
lowish or fawn-color, sometimes without spots, but oftener 
with transverse brown bands which surround the suture, the 
middle and the base of the lowest whirl. ‘The spire is conical, 
composed of eight or nine whirls slightly inflated, shagreened 
upon its entire surface by very apparent granulations, disposed 
in series, and forming a large number of folds or longitudinal 
ridges, with transverse strie; the folds, which are parallel to 
the lencth of the shell, are more numerous than those which 
cross it. Aperture ovate, round, brownish or whitish. Lip 
straight, thick, ornamented internally with small denticulations. 
Columella arcuated, covered by the left lip, which is furnished 
with guttules at its base. 
Length 10 lines. Width 5 lines. 
Inhabits the Mediterranean, the rocks of the Island of 
Teneriffe, the Canaries and the Azores; the coasts of New 
Holland, Van Diemen’s Land, and of the South Sea. 
This species, which is well characterized by its granular folds, 
presents some varieties, both in the color of the cavity of the 
shell, and in that of its bands. Upon some the rows of tuber- 
cles are equal, and then its whole surface is shagreened. In 
others the longitudinal folds are more prominent, more distant, 
and the tubercles less apparent; the general color of these does 
not resemble that of the first: it is brown, and whitish bands 
take the place of the deeper bands of the others. The whirls 
are also more prominent in those specimens which are found in 
the South Sea. 
The young of this species, like the other Buccina, have the 
lip thin, and the columella without a callosity. 
All these differences have caused, improperly, a division of 
this Buccrnum into several species, and even into several genera. 
Risso, in his work upon the productions of Southern Europe, 
has formed his genera Nesma and Lecuesis out of young spe- 
cimens of the Bucctnum fasciatum ; and his Mitre.ia marmi- 
nea, also, is nothing more than a young specimen of this last 
species. _ 
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