GENUS BUCCINUM. 81 
folds at right angles, and become more apparent near the base 
of the lowest whirl. Aperture whitish or violet colored, 
nearly round; right lip slightly margined, covered internally 
with transverse striz. Columella arcuated, and twisted at its 
base ; left lip, which partially covers it, is indistinctly striated, 
and forms a wrinkle at the upper part. 
Length 18 lines. Width 5 lines. 
Inhabits the coasts of Barbary, and of Western Africa. 
This species, which is nearly related to the Bucctnum asca- 
nias, ought to be united to it; for it differs from it only in the 
form of the lowest whirl, which is more ventricose, and by the 
longitudinal folds, which are a little more separated. 
83. BUCCINUM AMBIGUUM, Mont. The Ambiguous Buccinum. 
(Collect. Mass.) Monr., Test. Brit., pl. 9, fig. 7. 
Pl. XXI, fig. 81. 
B. testa parva, brevi, conico-globulosa, colore varia, fulvo fasciata aut 
maculata, plicis longitudinalibus striisque transversim subtilioribus undu- 
latis decussata ; anfractibus convexis, carinatis; apertura albA, suborbicu- 
lata; labro dextro marginato, intis striato. 
Shell small, short, conico-globular, color slightly variable, 
whitish or reddish, marked with fawn-colored bands or isolated 
spots of the same color; spire composed of six or seven 
convex whirls, keeled and strongly folded. ‘Vhe whirls are 
distant and swollen near the suture; it has, also, upon its 
entire surface, fine and numerous transverse strie. Aperture 
whitish, suborbicular ; right lip margined, marked with brown 
spots and striated internally ; columella arcuated; the base 
strongly recurved. 
Length 7 lines. Width 4 lines. 
Inhabits the Channel, the coasts of England, the Mediterra- 
Buccinum. F 
