April 17, 188.5.] x [Cope. 



PROCEEDINGS 



OP THE 



AMERICAN PHILOSOPHICAL SOCIETY, 



HELD AT PHILADELPHIA, FOR PROMOTING USEFUL KNOWLEDGE. 



Vol. XXIII. January, 1886. No. 121. 



A Contribution to the Vertebrate Paleontology of Brazil. By E. D. Cope. 

 {Read before the American Philosophical Society, April 17, 18S5. ) 



Professor Orville A. Derby, Director of the Geological Section of the 

 National Museum of Brazil, has desired me to furnish to the museum an 

 account of the extinct Vertebrata from the various strata found within 

 the limits of the Empire, which are preserved in the Museo Nacional at 

 Rio de Janeiro. I have also received a considerable collection made in the 

 neighborhood of Bahia by Mr. Joseph Mawson, of London, England, 

 which has aided me much in the determination of the extinct fauna of 

 that region. 



The horizons from which the species now enumerated have been derived 

 are the Pliocene, the Cretaceous and the Carboniferous. The work hitherto 

 done in this field is small in amount. The researches of Lund and Rein- 

 hardt into the foasils of the caves of Brazil are well known. Professor 

 Owen has determined the existence of Crocodilia and Dinosauria in the 

 Cretaceous beds near Bahia ; and Professor Marsh has described a gavial 

 from the same horizon and locality. Professor J. S. Newberry has iden- 

 tified some fishes from Ceara in Eastern Brazil as of Jurassic age ; and I 

 have described a genus and species from the same locality. In more 

 detail, tbe localities and horizons from which the specimens of vertebrate 

 fossils of the Museo Nacional have been derived, are the following, so far 

 as determined : 



Pliocene, Pampean. 



North-eastern pt. of Province of Bahia ; Toxodon expansidens, sp. nov. 



Cretaceous ? Laramie. Near Bahia. Diplomystus longico status, sp. 

 nov. Chiromystus matosoni, sp. nov. 



Fox Hills. Province of Pernambuco. Eyposaurus derbianus, sp. nov. ; 



PROC. AMER. PHILOS. SOC. XXIII. 121. A. PRINTED SEPTEMBER 26,1885. 



