GALWEY : MOLLUSCA OF MAGILLIGAN STRAND. 269 



Donax anatinus. Very plentiful, alive, 



Emarginula . Rather common. 



Fissurella . Rather common. 



Fusus . Common. 



lanthina fragilis. Common at certain seasons. 



Littorina . Not common. 



Lucina borealis. Not very common. 

 Lucinopsis undata. Rare. 

 Lutraria elliptica. Very common. 

 Mactra stultorum. Very plentiful, alive. 

 M. elliptica. Very plentiful, alive. 

 M. truncata. Rare. 



Modiola . Not common. 



Murex erinaceus. Not common. 



Mya truncata. Common. 



Mytilus edulis. Very common, alive. 



Nassa reticulata. Common. 



Natica monilifera. Very common, alive. 



Natica . Occasional. 



Ostrea edulis. Occasional. 



Patella vulgata. Common. 



P. athletica. Occasional. 



P. pellucida. Occasional. 



Pecten. Several varieties, including pusto, tigrinus, varius, 



but these are generally single valves, some very small and 



beautiful. 

 Pectunculus glycimeris. Very common, too often dead 



shells, but sometimes alive. 

 Pilopsis ungaricus. Rather common. 

 Psammobia ferroensis. Rare. 

 Purpura lapillus. Common, alive. 

 Scalaria communis. Rare. 

 Solen ensis. Very common, alive. 

 S. siliqua. Very common, alive. 

 Tellina tenuis. Very common. 



