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348 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



Cardium blandum Gould. 

 Bering Island. Collector's number 2571. Mus. Cat. 40948. 



Pisidium aequilaterale Prime. 



In ponds near Ladiginsk and the village, July 22 and 29. Bering 

 Island. Identified by Mr. Prime from specimens sent for examination. 

 Collector's numbers 1267, 1337. Mus. Cat. 40949. 



Modiolaria discors Linne. ^ 



With the next species. Mus. Cat. 40950. 



Modiola modiolus Lixxe. 

 Bering Island ; valves on the beaches. Mus. Cat. 40951. 



Mytilus edulis Lixxi:. 



With the last, also living, and from Avatcha Bay, Kamchatka. Col- 

 lector's numbers 1791, 2594. Mus. Cat. 40952. 



FAUNAL SUMMARY. 



