THE ALG^ 443 



Melosira nummuloides B. de st. V. 



In salt water near Juneau ; Glacier Bay. 



Melosira sol C. G. E. 



Attached to seaweeds from Annette Island. 



Melosira sulcata C. G. E. 



Attached to seaweeds from Annette Island. 



Trochiscia moniliformis F. C. M. 



Attached to seaweeds from Annette Island ; Glacier Bay. 



Coscinodiscus argus C. G. E. 



In salt water material from Annette Island ; Yakutat Bay. 



Coscinodiscus lineatus C. G. E. 

 In salt water from Glacier Bay. 



Thalassosira cleve H. H. G. 



In salt water from Glacier Bay. 



Triceratium wilkesii J. W. B. 

 In salt water near Wrangell. 



Chaetoceros hispidum C. G. E. 



One specimen w^as found in material from Annette Island. 



Biddulphia aurita L. W. D. 



Attached to seaweeds from Annette Island ; Popof|Island. 



Isthmia obliquata J. E. S. 



In salt water from Yakutat Bay ; Victoria, British Columbia. 



Rhabdonema biquadratum J. B. 



Material from Annette Island. 



Rhabdonema fauriae P. P. 



Material from Annette Island. 



Rhabdonema japonica T. & B. 



Material from Annette Island. 



Rhabdonema elegans J. B. 

 Material from Annette Island. 



Rhabdonema striatulum J. E. S. 



In salt water material from Annette Island ; Glacier Bay ; Popof 

 Island ; Yakutat Bay. 



Rhabdonema arcuata F. T. K. 

 In salt water, Yakutat Bay. 



