Stewart— Mollusca of the Bounder Clay. 175 



Purpura lapillus, Linn, 

 Belfast Waterworks, Bryce, 



Buccinum undatum, Linn, 



Belfast Waterworks, Bryce ; Ballyrudder, S, A. S, 



Buccinum undatum var. fusiforme, 

 Belfast Waterworks, Bryce. 



Buccinum grceanlandicum var, undulatum, Mailer, 

 Ballyrudder, County Antrim, Jeffreys and Hyndman. 



Murex erinaceous, Linn. 

 Belfast Waterworks, Bryce. 



Trophon clathratus, Linn. 



Belfast Waterworks, Bryce ; Bangor, S. A. S. ; Ballyrudder, Jeffreys and 

 Hyndman, also S. A. S. 



Trophon clathratus var. Gunneri, Loven. ■ 

 Falls Park, Belfast, S. A. S. 



Trophon truncatus, Stromer. 



Belfast Waterworks, Bryce ; Falls Park, Ballyrudder, S. A. S. 



Trophon latericeus, Moller. 



Woodburn, Co, Antrim, S. A. S. 



Fusus antiquus, Linn, 



Belfast Waterworks, Bryce. 



Fusus antiquus Monst. cinctum. 



Belfast Waterworks, Geo. C. Hyndman, S. A.. S. I have seen two 

 specimens of this form, which seems to me entitled to be considered as a 

 variety rather than as a monstrosity. 



Fusus gracilis, Da Costa. 

 Belfast Waterworks, Bryce. 



