3S 



VOLUTA muiicina. 

 TAB. DCXXVI.— ^g^. 4, 5 & 6. 



Spec. Char. Ovate-fusiform, with a rather pro- 

 duced base ; the lower part even, the upper 

 tuberculato-costated ; the last whorl longer 

 than the spire, rather convex. 



Syn. Voluta muricina. Lam. Ann. du Mus. i. 477. 

 & xvii. 75 ; Lam. Hist. Nat. vii. 350. Desk. 

 Coq. Foss. ii. 697. pi. 91./. 18, 19. pi. 93. /. 3, 

 4. & pi. 94./ 3, 4. Morris, Cat. 168. 



too variable is this shell, that it is almost impossible to de- 

 fine it. The costae are often elongated and rounded, with 

 a protuberance at their upper terminations (fig. 5 and 6). 

 This is particularly the case with those upon the spire ; at 

 other times they are very short, and assume the form of 

 angular tubercles (fig. 4) : the length of the shell also 

 varies with the form of the costae : when perfect the surface 

 is finely striated transversely. Fig. 5 represents a variety 

 approaching to the following species. 



The French localities are Grignon, Parnes, Mouchyand 

 Courtagnon. The fine striae on the surface appear to have 

 escaped Deshayes' observation. 



