8 

 VOLUTA Labrella. 



TAB. BCX\Y—J(g. 2. 



Spec. Char. Ovate-turbinate, ventricose, trans- 

 versely furrowed towards the pointed base ; 

 upper part of the last whorl more or less keel- 

 shaped ; spire short, distinct from the last whorl, 

 imperfectly ribbed, each rib divided into several 

 spines which are g-radually lost towards the last 

 whorl ; columella with one large and several 

 small plaits ; aperture much elongated, S-angled ; 

 the inner lip tuniid above 



Syn. Voluta Labrella, Lam. Hist. Nat. vol. 7. 353. 

 Deshayes Coquilles Foss. Vol. I. 694;, pi. 91. /*. 

 1—6. 



Ihe French specimens of this species are generally much 

 morecarinated than the English ones, but even in them the 

 keel varies in sharpness : the difference between young shells 

 from the two countries is very slight. In the English full- 

 grown shell the keel is broad, rounded and not distinct 

 from the body of the whorl, which is nearly even and smooth 

 except toward the base. The swelled inner lip appears 

 to be an important character. 



Specimens of this shell in various stages of growth have 

 been lately collected in Bracklesham Bay, by J. S. Bower- 

 bank, Esq. It is a valuable addition to the list of British 

 tertiary Fossils, which resemble thp^ of France. It is ac- 

 companied by Cerithium Cornu-copia, C. giganteum, 

 Ovula tuberculosa, Desk., and many undescribed shells. 



