2I O SAUNDERS [44^] 



Navicula legumen C. G. E. 



In salt watei material from Annette Island. 



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

 into the ocean by streams or glaciers. 



Navicula pupula C. A. A. 



In salt water material from Annette Island. 



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

 into the ocean by streams or glaciers. 



Navicula apis C. G. E. 



Material from Annette Island ; Popof Island. 



Vanheurckia rhomboides A. B. 



In a freshwater pond near Kukak Bay. 



Pleurosigma angulata W. S. 

 In salt water, Yakutat Bay. 



Pleurosigma attenuata F. T. K. 



In a freshwater pond, Kadiak Island. 

 Pleurosigma fasciola C. G. E. 



In salt water near Wrangell. 



Nitzschia diadema F. T. K. 

 In salt water, Yakutat Bay. 



Nitzschia angularis W. S. 

 In salt water, Yakutat Bay. 



Nitzschia closterium C. G. E. 



In salt water material, Annette Island. 



Nitzschia sigmoidea C. L. N. 



In salt water material from Annette Island. 



A freshwater species, the dead shells of which had heen carried into 

 the ocean by streams or glaciers. 



Nitzschia vermicularis F. T. K. 



In a freshwater pond, Popof Island. 

 Surirella elegans C. G. E. 



In a freshwater pond, Popof Island. 



Staureoneis phrenicenteron C. L. N. 



Material from Annette Island ; freshwater pond, Kadiak Island ; 

 Kukak Bay. 



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

 the ocean by streams or glaciers. 



