216 Proceedings of the Boyal Physical Society. 



Rissoa sohcta (Phil.). 



Station 4. 

 B. memhranacea (Adams). 



Upper lam,, on Chondrus crispa. 

 Hydrohia ulvce (Penn.). 



Litt., north of Lamlash. 



TUERITELLID^. 



Turritella terehra (Linn.). 



Litt., sands, Lamlash. 



Pyramidellid^. 



Odostomia rissoides (Hani.). 



Upper lam., Clachland. 



Naticid^e. 



Natica alderi (Forb.). 



Stations 5, 12. 

 N. montacuti (Forb.). 



Station 10. 



VELUTINID.E. 



Velutina laevigata (Penn.). 



Station 4. 



Aporrhaid^, 



Aporrhais pes-pelecani (Linn.). 

 Station 11. 



Cerithiid^. 



Cerithium reticulatiim (Da Costa). 

 Station 11. 



BUCCINIDiE. 



Purpura lapillus (Linn.). 



Litt. 

 Buccinum undatum (Linn.). 



Upper lam., King's Cross. 



