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. 



- j^ Collect. MASS. LAM.) LIST., pi. 968, fig. 22, c. 



PI. XXII, fig. 88. ~.fl./7*.># 



B. testa ovato-oblonga, crassiuscula, superne inferneque transversim 

 striata, albo-cseruleseente ; plicis distantibus prominulis, basi obliquis, ver- 

 sus labrura 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 striae. Similar stria3 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. 



Length 9 lines. Width 4J- 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 Memoire sur la Geologic des 

 environs de Bordeaux, page 50, pi. 2, fig. 13. 



