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. 8. National Museum; to Dr. F. B. Sumner of the Seripps 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. 8. J. Holmes 
of the same institution, under whose direction it has been completed, 
as well as to the Bureau of Fisheries and the U. 8S. 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. 
