124 Pub. Puget Sound Biol. Sta. Vol. 2, No. 41 



PLATE 20 

 Rhizophidium codicola. X800 



Figs. 1, 3, 4. The organisms in a vegetative condition. Figs. 3 and 4 

 show early stages in the formation of the zoospores. 



Fig. 2. An empty zoosporangium with the irregular mouth, and the 

 zoospores escaped. 



Chytridium codicola. X350 



Figs. 5, 7. The saccate mycelium and vegetative condition of the zoospor- 

 angium. 



Fig. 6. An empty zoosporangium with the operculum open. The unicilate 

 zoospores are shown. 



Stemphylium Codii. X350 



Fig. 8. The prostrate mycelium with the muriform conidia. Both the 

 intercalary and the pedicellate conidia are represented. 



