Proceedings of 
the United States 
2) fe AC 
a pages HIOWS EU, 
National Museum Liineton 
SMITHSONIAN INSTITUTION - WASHINGTON, D.C. 
Volume 113 1962 Number 3466 
THE NON-BRACHYURAN DECAPOD CRUSTACEANS 
OF CLIPPERTON ISLAND 
By Fenner A. Cuace, Jr. 
Clipperton Island, situated in the eastern Pacific Ocean at 10°18’N., 
109°13’W. and separated by thousands of miles of open sea from the 
other coral islands to the west, supports a marine fauna of far greater 
zoogeographic interest than is indicated by the meager attention 
that has been devoted to it. There are but three publications (Rath- 
bun, 1902; Schmitt, 1939; and Hertlein and Emerson, 1957) that 
deal even in part with the decapod crustaceans of Clipperton. A 
very useful description and historical account of the Island, as well 
as a bibliography of earlier studies, has been given by Sachet (1960). 
Due to the efforts of biologists from the Scripps Institution of 
Oceanography of the University of California, who visited the Island 
aboard the Spencer F. Baird in 1954, 1956, and 1958, collections are 
now available for a significant analysis of that fauna. The late 
Conrad Limbaugh was largely responsible for the fine collections 
made in 1956 and 1958. Not only the Scripps material, but also 
that which formed the basis for the Rathbun and Schmitt studies, 
were examined-for the present:report. The Scripps collections ex- 
actly doubled the number of species of macruran and anomuran 
decapods previously known from Clipperton, but the efforts of Waldo 
L. Schmitt, who obtained 11 of the 24 known species in a few hours 
during the Presidential Cruise of 1938, cannot be minimized. That 
the fauna is not yet completely known is indicated by the failure of 
either the Presidential Cruise or the Scripps parties to collect the 
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