GENUS BUCCINUM. 85 
87. BUCCINUM MUTABILE, Linn., Gmet. The Girdled Buc- 
cinum. 
(Collect. Mass. Lam.) Lasz., Conch., t. 975, fig. 30. 
Pl. XXIV, fig. 93. 
B. testA ovato-conica, levi, nitidA, basi striata, superné longitudinaliter 
plicata, fulvo aut luteo-nebulosé, ventricosd ; anfractibus convexis, propé 
suturas fascia albo et rufo articulata cinctis; spird exserta, apice acuta ; 
labro intis striato. 
Shell ovate, conical, smooth, slightly ventricose ; spire com- 
posed of seven whirls, rounded and swollen at the upper part, 
especially the lowest, which is larger than all the others unit- 
ed. ‘The three upper whirls are finely plaited; the tower 
whirl has a few fine, transverse striz near the base. Aperture 
white and ovate, pretty strongly emarginated, and oblique at 
the base; the depth of the cavity chestnut-colored ; right lip 
thin, white, very finely striated internally ; left lip thin, white 
and shining, partially covering the body of the shell... Colu- 
mella arcuated, terminated at the base by a sharp, and slightly 
projecting keel. ‘The exterior of the shell is red or fawn- 
colored, ornamented with an articulated band of white and 
violet upon the upper edge of the whirls, with waved longitu- 
dinal yellow or red spots, the tint of which is sometimes 
very deep, and often very pale. 
Length 15 lines. Width 9 lines. 
Inhabits the Mediterranean, the coasts of France, of Cor- 
sica, of Naples, of Sicily, and the Adriatic Sea. 
This shell, which is very common, presents somewhat.remark- 
able varieties of color. Sometimes its ground is red; and white, 
undulated, very crowded flames, or brown and distant longitudinal 
lines ornament it from one end to the other ; at other times it is 
whitish, which happens when it has been a long time exposed to 
the light ; and in this case transverse strie are perceptible on its 
surface; but the articulated band about the suture always ap- 
