BRACHIOPOD COMMUNITIES 83 



however, this is only speculation. In summary it is indicated that the 

 brachiopods living in this area are but a small part of an extremely 

 changeable and diverse community or group of communities off the east- 

 ern shore of Catalina Island. 



LITERATURE CITED 



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Dall, W. H. 



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1891. Scientific results of explorations by the U. S. Fish Commission Steamer 



Albatross. Proc. U. S. Natl. Mus. 14:173-191. 

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United States National Museum, with descriptions of thirty-three new 



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Davidson, T. 



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1850. Terebratula caurina. Proc. Bost. Soc. Nat. Hist. 3:347. 



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Hinds, R. B. 



1844. The zoology of the voyage of H. M. S. Sulphur under the command of 

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Koch, B. 



1848. Terebratula californiana. In Martini und Chemnitz. Conch. Cab. Bd. 

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SOWERBY, G. B. 



1846. Descriptions of thirteen new species of Brachiopoda. Proc. Zool. Soc. 

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