208 SAUNDERS [444] 



Tabellaria flocculosa F. T. K. 



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



Grammatophora marina (Lyngb.) Kuetz. 

 In salt water from Yakutat Bay. 



Licmophora granulata V. 



In salt water from Glacier Bay. 



Licmophora cuneata F. C. L. 



Attached to seaweeds, Glacier Bay. 



Licmophora pennatula V. 



In salt water near Juneau ; Annette Island ; Yakutat Bay ; Wran- 

 gell ; Popof Island. 



Meridion circulare C. A. A. 



In a freshwater pond, Popof Island. 



Diatoma hyemale H. C. L. 



In a freshwater pond, Popof Island. 



Diatoma pectinale O. F. M. 



In a freshwater pond, Popof Island. 



Fragilaria construens C. G. E. 



In a freshwater pond, Popof Island. 



Fragilaria virescens J. R. 



In a freshwater pond, Popof Island. 



Fragilaria striatula H. C. L. 



In material from salt water. Sitka ; near Juneau ; Popof Island. 



Fragilaria exilis A. G. 



In salt water, Yakutat Bay. 



Sjrnedra crotonensis A. M. E. 



In a freshwater pond, Popof Island ; Cook Inlet. 



Synedra ulna C. L. N. 



In a freshwater pond, Popof Island ; Kadiak Island. 



Synedra prolongata A. S. 



In a fresh water pond, Cook Inlet. 



Synedra fasciculata C. A. A. 



Attached to seaweeds from Annette Island ; Glacier Bay ; Yakutat 

 Bay. 



