begun, when another chance to get into the field under Captain Hancock's 

 generous auspices developed. Since by this time the Captain had given the 

 Velero III to The University of Southern California, the vi^ork came 

 nou^ more directly under that institution. 



This 1939 trip did not entirely correspond in route to the 1934 voy- 

 age, but while supplementing the collections south to Panama the party 

 then went through the Canal and a month's work was done in the Carib- 

 bean. Since the writer had had more experience with algae from this than 

 from any other exotic area, this was specially advantageous, but as a 

 result he was again diverted from finishing with the West coast material 

 until a susbtantial report on the eastern part of the 1939 Expedition 

 (Taylor 1942) and certain other papers on similar material had been 

 published. However, material in other groups worked up by collaborators 

 (Sparrow 1940, Hedrick 1942) was immediately dealt with. 



Finally, an account of the bulk of the 1934 and 1939 Pacific marine 

 algae has been assembled. It shows that this area has a varied marine 

 flora, of which a surprisingly large proportion of the plants have hitherto 

 been undescribed. No doubt more thorough field vi^ork in the future will 

 show still other new things we missed, and especially will connect the 

 records we have made into a more continuous account of the flora of this 

 coast. The present report is only the product of brief pioneering explora- 

 tions, and much remains to be done to improve the completeness and the 

 exactness of our knowledge of the algal flora of this area. 



To Captain Allan Hancock, sponsor of these expeditions and master 

 of the expeditions' vessel, the Velero III, for his many kindnesses, 

 most grateful thanks are offered. Always thoughtful for the comfort of 

 his guests, he made their work and leisure thoroughly delightful. The 

 professional members of his crews also cheerfully gave eveiy assistance to 

 the scientific members in the arduous labor of dredging, and of landing 

 parties and their equipment, often under conditions hazardous at least 

 to the latter. That the scientists should occasionally lend each other a 

 helping hand is to be expected, especially with the dredging, and Drs. C. 

 McLean Fraser, H. W. Manter, and J. S. Garth, assisted by Fred Ziesen- 

 henne and F. Elmore, did facilitate the writer's collecting on many occa- 

 sions, but most particularly did Dr. Waldo L. Schmitt contribute to the 

 tale of algae brought on board and mounted. Not only on the expeditions 

 of 1934 and 1939 but also on several others under Hancock or other 

 auspices, he secured interesting algae which the writer has been enabled 

 to include in this account to its considerable enrichment. For some 

 Schmitt material from earlier expeditions acknowledgement is due the 

 U. S. National Museum, and for the Hassler specimens, the Farlow 

 Herbarium. 



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