MOLLUSCS. 375 



Modiolaria faba (Fabr.). Henley Harbor, 4 f. 



Modiolaria discrepans Mull. Strait of Belle Isle ; 

 Square Island, 30 f. 



Mytilus modiolus Linn. Strait of Belle Isle. 



Mytilus edulis Linn. Whole coast. 



Alasmodonta arcuaia Barnes ? I was told that a fresh- 

 water mussel was common in Salmon River. 



Pisidium Steenbuchii (Moll.). Square Island and 

 Strawberry Harbor. 



Cryptodon obesus Verrill. Strait of Belle Isle, 50 f., 

 and whole coast. 



Axinopsis orbiculata Sars. Henley Harbor, 10-15 f. 

 (Stearns.) 



Venericardia borealis (Conr.). Strait of Belle Isle, 

 50 f.; Long Island, 15 f.; Chateau Bay, 50 f. 



Cardium pinnulattim Conr. It did not occur north 

 of the Strait of Belle Isle. 



Serripes groenlandiais Beck. Whole coast, 10-50 f. 



Gemma Totteni Stimps. Indian Harbor, low-water. 



Tapes fluctuosa Sowb. Henley Harbor, 20 f.; Square 

 Island, 30 f. 



Mactra solidissima Chemh. Mouth of Esquimaux 

 River ; Strait of Belle Isle. 



Mactra polynema Stimps. Strait of Belle Isle. 



Mesodesma Jauresii Joannis. Strait of Belle Isle. 



Macoma fragilis (¥di\ix. fusca Gould). Whole coast. 



Macoma sabulosa Stimps. Whole coast. 



Solen ens-is Linn. Strait of Belle Isle. 



Thracia Conradi Couth. Strait of Belle Isle. 



Thracia myopsis Beck. Salmon Bay, 10 f. ; Long 

 Island, 15 f. 



Periploma papyracea (Say.). Chateau Bay, 15 f. 



