38 GENUS BUCCINUM. 
The form of this shell, and the folds which are delineated 
upon its surface render it very remarkable. The very apparent 
margin of the right lip gives it a resemblance to the Buccinum 
undosum of Quoy and Gaimard, but it differs materially in several 
points. It is invariably smaller, the upper part of the last whirl 
is flattened, and the aperture canaliculated at the upper part is 
above all a very obvious distinctive mark. 
39. BUCCINUM LYRATUM, Lam. The Lyre Buccinum. 
(Collect. Mass. Lam.) Lisv., pl. 968, fig. 22, c. 
Plu XXII, fig. 88. 
B. testa ovato-oblongd, crassiuscula, superué infernéque transversim 
striata, albo-cerulescente; plicis distantibus prominulis, basi obliquis, ver- 
sis labrum tenuioribus magisque confertis; spira brevi; labro intus striato. 
Shell ovate, oblong, thick, of a, bluish white, with distant 
red spots; spire short and pointed, upon which may be count- 
ed five or six indistinct whirls; suture simple. ‘These whirls 
are ornamented with longitudinal folds or ribs, narrow, and 
regular, finer and closer towards the lip. Upon the lowest 
whirl, which is somewhat ventricose, the ribs are slightly 
arcuated throughout their whole length; they descend quite to 
the base, and towards that point they are intersected by trans- 
verse strie. Similar strie exist at the upper part of the low- 
est whirl, which is flattened. Aperture elongated, and dilated 
in the middle, the interior is violet colored; lip thick, striated 
internally. 
1 
Length 9 lines. Width 42 lines. 
Inhabits the Seas of Senegal. 
The appearance of this shell is pleasing and peculiar; it is 
somewhat related to some Volutes. It is found fossil at Dax. 
It has been described and figured under the name of Nassa 
Desnoyersi, by M. Basterot, in his Mémoire sur la Géologie des 
environs de Bordeaux, page 50, pl. 2, fig. 18. 
