HASEMAN, GEOGRAPHICAL DISTRIB UTION IN 80 VTH AMERICA 77 

 The facts regarding the Siluridse are as follows : 



Number of 



species Remarks 



Vlarias 1 Lower Pliocene, India ; still living in India. 



Heteroiranchus 1 Lowe r Pliocene, India ; still living in Africa 



and East Indian Archipelago. 

 81/Iurus (?) Upper Tertiary of Europe and India ; still 



living in Paleoarctic realm. 



Pseudeatropius 1 Tertiary of Sumatra. 



Macrones 1 Lower Pliocene of India ; existing in Asia. 



^** a ! Lower Pliocene of India ; existing in Asia. 



Amiurus 2(?) Lower Miocene of Canada; existing in 



.North America and China. 

 ( ?) Pimelodus 1 ( ?) Late Tert iary (?) of Taubate lignite, 



Taubate, Brazil, and of Parana River, 



Argentine Republic; existing in South 



America east of the Andes and north of 



Patagonia. 

 Rhineastes 7( ?) Lower Tertiary, lower Miocene and 



Bridger Eocene of western United States 



of America. 



Buclclandium 1 Lower Eocene, England. 



Aurim 4( ?) Middle Eocene, Belgium. 



Upper Eocene, England. 

 Oligocene and Middle Oligocene, Germany. 

 Lower Eocene, Copenhagen. 

 Pliocene, India. 

 (?) Tertiary, Taubate, Brazil. 

 Bagarius 1 Tertiary of Sumatra. 



Woodward stated that Bucklandium diluvii appeared to be related to 

 Auchenoglanis, which still exists in Brazil. Rhineastes is the oldest 

 known fossil catfish and appears to he related to Phractocephalus of the 

 Pimelodinse, which lives in the Amazon. 



The age of the Tanhate shales, found in the deeply eroded Parahyba 

 Valley, is not definitely known, but the surface deposits containing fishes 

 do not appear to be very old (Pliocene), because the three fossil genera 

 of fishes are still living. Jordan's generic distinction of JEobrycon does 

 not appear to the writer to be well founded, because the species of both 

 Astynax and Tetragonopterus vary considerably in shape. The two fossil 

 species from Taubate may, in fact, fall into the genus Astynax as now 

 defined by Eigenmann. 



If the writer is correct in considering the Taubate shales as late Ter- 

 tiary, it is evident from the above list of fossils that the South American 

 as well as the African fishes have evolved from forms which earlier lived 



