94 



NERITA costata. 



TAB. CCCCLXIil.— ^^>^5. 5 and 6. 



Spec. Char. Hemispherical ; spire conspicu- 

 ous, impressed; whorls transversely cos- 

 tated ; costae thin, sharp, numerous ; aper- 

 ture expanded, orbicular; columellar lip 

 prominent, obtuse. 



fVATRER shorter, but otheways resembling the many 

 ridged harp in miniature ; its whorls are sej)arated by an 

 imperfect canal ; the left lip is produced, and almost 

 divided by an obscure sinus into two blunt teeth. 



Presented by the Rev. G. Cookson ; it is one of the 

 most elegant productions of the AnclifF Oolite. 



Figures 6 are two enlarged views. 



