[445] THE ALG ^ 2O 9 



Eunotia robusta J. R. 



In a freshwater pond, Kadiak Island ; Cook Inlet ; Kukak Bay. 



Eunotia gracilis C. G. E. 



In a freshwater pond, Popof Island. 



Eunotia lunaris C. G. E. 



In a freshwater pond, Popof Island ; Kadiak Island. 



Cocconeis placentula C. G. E. 



In a freshwater pond, Kadiak Island. 



Cocconeis scutellum C. G. E. 



In salt water from Victoria, British Columbia ; attached to seaweeds 

 from Annette Island ; freshwater pond, Kadiak ; salt water, Yakutat 

 Bay; Juneau ; Popof Island. 



Achnanthes subsessilis C. G. E. 

 In salt water from Glacier Bay. 



Achnanthes lanceolata A. B. 



In a freshwater pond, Popof Island near Kukak Bay. 



Achnanthes glabrata A. G. 



In salt water, Yakutat Bay. 



Cocconema lanceolatum C. G. E. 



Material from salt water, Annette Island ; in a freshwater pond, 

 Popof Island ; Kadiak Island ; Cook Inlet. 



A freshwater species, the dead shells of which had been carried 

 into the ocean by streams or glaciers. 



Navicula silicula C. G. E. 



In a freshwater pond, Popof Island. 



Navicula cyprinus C. G. E. 



In a freshwater pond, Popof Island. 



Navicula elliptica F. T. K. 



In a freshwater pond, Popof Island ; attached to seaweeds from 

 Popof Island. 



Navicula major F. T. K. 



In a freshwater pond, Popof Island ; Annette Island ; Kukak Bay. 



Navicula radiosa F. T. K. 



In a freshwater pond, Popof Island. 



