THE MOUNT DESERT REGION" 171 



LlOCYMA Dall 

 LlOCYMA FLUCTUOSA (Gould) 



Tellinidae 

 Macoma Leach 

 Macoma balthica (Linne) 

 Macoma calcarea (Gmelin) 



Solenidae 

 Ensis Schumacher 

 Ensis directus (Conrad) 



Mactridae 

 Spisula Gray 

 Spisula (Hemimactra) solidissima (Dillwyn) 



Myacidae 



Mya Linne 

 Mya arenaria Linne 

 Mya truncata Linne 



Saxicavidae 

 Saxicava Belleviie 

 Saxicava arctic a (Linne) 



Panomya Gray 

 Panomya arctic a (Lamarck) 



SCAPHOPODA 

 SOLENCONCHAE 



Dentaliidae 

 Dentalium Linne 

 Dentalium entalis Linne 

 Dentalium occidentale Stimpson 



