PART 1 GARTH : PACIFIC OXYRHYNCHA 3 



tory, precursor of the Allan Hancock Foundation; and collections made 

 by T. A. and Beatrice L. Burch from 1939 to 1941, containing dredged 

 specimens from Santa Monica Bay. Others contributing material from 

 this area and north to Monterey are K. O. Emery, C. L. Hubbs, I. A. 

 McCulloch, R. J. Menzies, J. L. Mohr, R. Morrison, C. L. Wright, 

 and F. C. Ziesenhenne. 



From northern California are collections made at Tomales Bay by 

 P. B. Quyle and F. Gale in 1946, in Marin and Sonoma Counties by 

 R. J. Menzies in 1948-1949, in Sonoma County by L. O. Miles in 

 1949-50, and in Mendocino County by W. K. Emerson and J. L. Bar- 

 nard in 1949. 



Material from Oregon was provided by a Hancock Foundation field 

 trip to Coos Bay in the summer of 1942. Material from Washington 

 came from the University of Washington Oceanographic Laboratories, 

 Friday Harbor, E. F. Swan and D. L. Ray, in 1948-49; from Walla 

 Walla College Biological Station, Anacortes, B. W. Halstead and H. C. 

 Coffin, in 1949-51; and from the University of Washington Ocean- 

 ographic Laboratories, Seattle, J. W. Slipp, in 1951. 



Specimens from British Columbia were obtained by the writer while 

 a guest aboard the Pacific Biological Laboratory ship Investigator, oper- 

 ating in Burrard Inlet near Vancouver in 1949. Comparative material 

 from Arctic Alaska was provided from Point Barrow by G. E. Mac- 

 Ginitie in 1950. 



In addition to material sent to him at the University of Southern 

 California, the writer has examined specimens in the following Pacific 

 Coast institutions at which collections of Brachyura are kept: San Diego 

 Museum of Natural History, San Diego; Los Angeles Museum of His- 

 tory, Science, and Art, Los Angeles; Hopkins Marine Station, Pacific 

 Grove; Stanford Museum of Natural History, Palo Alto; California 

 Academy of Sciences, San Francisco; University of Washington Ocean- 

 ographic Laboratories, Friday Harbor; and Provincial Museum, Vic- 

 toria, B. C. 



Method of Study 



In reviewing the species of majid crabs from the Pacific coast of the 

 Americas it was deemed unnecessary to repeat the early work of M. J. 

 Rathbun, who in 1896 visited the principal museums of Europe, examin- 

 ing the types of J. C. Fabricius at Copenhagen, of Herbst at Berlin, of 

 Saussure at Geneva, of H. and A. Milne Edwards at Paris, and of 

 Miers at London, and established the identity of specimens then in the 



