29 



NERITA globosa. 



TAB. CCCCXXIV.—/^. 1. 



Spec. Char. Subglobose, transversely sul- 

 cated ; spire apparent ; one tooth upon the 

 inner lip ; outer lip plain within. 



JL HREE or four black bands and a few rows of oblong 

 spots decorate tbe surface : the outer lip is rather thin 

 ^nd void of crenulations ; the inner lip is narrow, with 

 only one very obtuse tooth near its upper end ; within 

 the aperture near its lower part, is a conspicuous lamel- 

 liform tooth that regulates the opening of the operculum 

 by confining the appendage that moves between it and the 

 lip : the spire is not prominent. 



The only circumstance in the form of this shell that 

 induces us to determine it to be a Nerita, is the sulcated 

 surface in which it agrees with many recent marine 

 Shells, that have like it, no teeth or crenulations on the 

 outer lip, but are still called Neritae ; being a fossil and 

 much corroded, it may have lost its epidermis, although 

 some colour remains. 



This unique specimen was lent us by the Rev. T. 

 Cooke, who has taken much pains to fill up our list of 

 Hampshire shells : it contained two valves of Corbula 

 Pisum (tab. 209,) an intimation of its marine origin. 



