98 THE INVERTEBRATE FAUNA 



Nassa incrassata, var. simulans. 



Occasionally at North Berwick and Gran- 

 ton (M.). 



PLEUROTOMID^E. 



Defrancia linearis (Mont.). 



Common on the beach at North Berwick 



and D unbar (M.). 

 D. linearis, var. aequalis. 



Somewhat common on the beach at North 



Berwick and Dunbar (M.). 

 Pleurotoma costata (Donov.). 



Firth of Forth ; in shell sand at Gran- 



ton, Longniddry, North Berwick, and 



Dunbar (M.). 



We have found this species on the beach 



near Aberdour. 

 P. &eptangularis (Mont.). 



Firth of Forth (M'R). 

 P. rufa (Mont.). 



Wardie and North Berwick, in shell 



sand (M.). 

 P. turricula (Mont.). 



Firth of Forth (MR) ; on the beach at 



Wardie, Longniddry, North Berwick, and 



Dunbar (M.) ; Bass Eock, 24 fathoms 



(Metz. and Mey.). 

 P. turricula, var. rosea. 



North Berwick and Dunbar (M.). 

 P. trevelyana (Turt.). 



Bass Kock, 24 fathoms (Metz. and Mey?) ; 



Firth of Forth (M Andrew). 



Marginella laevis (Donov.). 



Laskey gave Dunbar as a locality, but his 

 specimen was a tropical species (Dr Gwyn 

 Jeffreys). 



