12 University of California Publications in Zoology [Vol. 23 



classification of the higher groups of Crustacea has been drawn; to 

 Dr. Paul Bartsch, Dr. J. E. Benedict and Mr. Austin H. Clark of the 

 U. S. National Museum.; to Dr. F. B. Sumner of the Scripps Institu- 

 tion, naturalist of the "Albatross" during the period covered by the 

 survey; to Dr. C. A. Kofoid of the University of California, under 

 whose supervision this report took its inception, and Dr. S. J. Holmes 

 of the same institution, under whose direction it has been completed, 

 as well as to the Bureau of Fisheries and the U. S. National Museum 

 for facilities so freely furnished in the way of study collections and 

 literature. 



The author realizes that this paper leaves much to be desired, but 

 hopes that more thorough collecting and more intensive study will be 

 encouraged thereby which will lead to a fuller knowledge of the 

 Pacific Coast representatives of these interesting, and in many cases 

 economically important forms. 



Transmitted April, 1916. 



