26 FroceediTigs of the Royal Physical Society. 



FiSSURELLIDiE. 



Punctwella noachina (Linn.). 



Off the south end and east side of Holy 

 Isle in 15 to 30 fathoms. 



Trocbibje. 

 Trochus montagui (Wood). 



LlTTORINID^. 



Rissoa inconspicua (Alder). 

 E. violacea (Desmar.). 

 B. proxima (Alder). 



EULIMIDiE. 



Eulima polita (Linn.). 



Off the south end of Holy Isle, 20 fathoms. 



Cancellariid^. 



Trichotropis horealis (Brod. and Sower.). 



Off the south-east side of Holy Isle, 20 

 fathoms, and off the west side of Holy 

 Isle, 15 to 20 fathoms. 



Pleurotomid^. 

 Defrancia teres (Forb.). 

 D. gracilis (Mont.). 

 D. purpurea (Mont.). 

 Pleurotoma costata (Donov.). 



II. Pleurobranchiata — 



BULLID^. 



Actceon torimtilis (Linn.). 



Off the west side of Holy Isle in 15 to 20 



fathoms. 

 Scaphander lignarius (Linn.). 

 Philine catena (Mont.). 



South-west of Holy Isle in 15 fathoms. 



III. NUDIBRANCHIATA — 



EOLIDID^. 



Eolis drummondi (Thonip.). 



Eather common on Zoophytes, old shells, 



