REPORT ON THE TESTACEOUS MOLLUSCA. 235 



Anomia patelliformis, L. 

 Valves, 14 fathoms, north of Puffin Island. 



Ostrea edulis, L. 

 Single old specimens in Menai Straits, and off Peumaen- 

 mawr, and off Puffin Island. 



Pecten pusio, L. 



Pecten vanus, L. 



Pecten tigriiius, Miill. 

 Dead valves of these species, off Puffin Island, north, and 

 off the south end of the Isle of Man. Young specimens of 

 P. varius were also found at Port Erin, and also valves of 

 P. tigrinus, var. costata. 



Pecten opercularis, L. 

 Small specimens dredged on Constable Bank, Menai 

 Straits, off Penmaenmawr, and off Puffin Island, and at Port 

 Erin, Isle of Man, but not one full-grown one. 



Lima loscombii, Sow, 

 Valves off Great Ormes Head, and at south end of 

 Isle of Man. 



Lima elUptica, Jeff. 

 Valves off south end of Isle of Man. 



Mytilus edulis, L. 

 Occurs in large beds in the estuary of the Conway River, 

 and at various places on the shore, and in deeper water east 

 and west of Great Ormes Head. 



Mytilus barbatus, L. 

 Off Puffin Island, alive, amongst a mass of dead shells. 



Modiolaria marmorata, Forbes. 

 Port Erin, Isle of Man. 



Nucula nucleus, L. 

 Dredged oft' south end of Isle of Man. 



