CONTENTS 



Introduction 189 



Historical Summary 189 



Recent Collections OF THE Author 190 



General Nature of the Gulf of California 192 



EcoLOGic Considerations 195 



General Aspects of the Algal Flora 198 



Chlorophyceae 201 



Phaeophyceae 220 



Rhodophyceae 251 



General Summary and Conclusions 337 



Acknowledgments 338 



Tables 



I. Temperature Data, Scripps, 1939 339 



II. Oxygen Data, Scripps, 1939 341 



III. Station Locations, Scripps, 1939 343 



Algal Collection Stations 



Allan Hancock Expedition, 1940 353 



Dawson, July, 1940 356 



Principal Algae Found at Turner's Island 



January, 1940 357 



July, 1940 357 



List of New Names and Combinations 358 



Literature Cited 344 



Explanation of Plates 359 



