OCT 2 7 1928 



Publications of the Carnegie Museum, Serial No. 67. 



11 ci7 



MEMOIES 



OF THE 



CAKKEGIE MUSEUM. 



VOL. V. 



W. J. HOLLAND, Editor. 



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. 



PITTSBUKGH. 



Published by the Authority of the Board of Trustees of the 



CARNEGIE INSTITUTE. 



June, 1912. 



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