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THE FRESHWATER FISHES OF BRITISH GUIANA, INCLUDING 



A STUDY OF THE ECOLOGICAL GROUPING OF SPECIES 



AND THE RELATION OF THE FAUNA OF THE 



PLATEAU TO THAT OF THE LOWLANDS. 



By C. H. EIGENMANN, Ph.D. 



Dean of the Graduate School of the Indiana State University, and Curator of 

 Ichthyology in the Carnegie Museum. 



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