2 1 8 DUBLIN UNIVERSITY 



It lives in great abundance in the bay in company with Littorina 

 littorea. 



Na88a reticulata (Linnem). 



Fine examples of this species were very common in the blue clay of 

 the deposits. 



It is still a prolific inhabitant of the harbour. 



Nassa incrassata (Mutter). 

 Was found in exceeding abundance everywhere in the beds. It 

 is at present still diffused throughout the bay. 



Buceinum undatum (Linneus.) 

 Was a very abundant shell in the deposits. One specimen occurred 

 of the curious ventricose and carinated variety. 



The harbour still contains the species as an inhabitant. 



Fu8U8 antiquum (Linneus). 

 Occurred sometimes, and attained a fine size. The length of one ex- 

 ample was almost five inches. It is still found in the bay in the living 

 state. 



Mangelia turricula. 

 I met with several of this species, which is now common in the dead 

 state in the bay. 



Mangelia costata {Pennant). 

 A specimen of this species was met with by Miss Kea. It now oc- 

 curs in the dead state only. 



Mangelia rufa (Montagu). 

 An individual of this species occurred in the raised beach of Jordans- 

 town. It has been identified in the living state in the neighbourhood, 

 by Edward Waller, Esq. 



Cyprcea Europcea (Montagu). 

 A single imperfect example of this species was met with. It now 

 dwells at the mouth of the harbour, a considerable distance from its old 

 station. 



