VOL. XVIII, pp. 91-106 MARCH 31, 1905 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



AN INTERESTING SPECIES OF FISH FROM THE HIGH 

 ANDES OF CENTRAL ECUADOR.* 



BY BARTON WARREN EVERMANN 



AND 



WILLIAM CONVERSE KENDALL. 



By permission of Hon. George M. Bowers, Commissioner of Fish and Fisheries. 



Through the kindness of Dr. S. Austin Davis, surgeon of the 

 Guayaquil and Quito Railway Company, the Bureau of Fisheries 

 has recently come into possession of a number of excellent 

 specimens of a very rare and little known species of fish from 

 the high Andes of central Ecuador. 



According to the classification of Eigenmann and Eigen- 

 mann,t these specimens belong in the Siluroid family Argidse, 

 and are beyond doubt the Pimelodus cydopum of Humboldt or 

 Cydopium cydopum of later authors. But in a recent mono 

 graph of the fishes of the family Loricariidse,t by Mr. C. Tate 

 Regan, that author regards the specimens identified by Eigen 

 mann and Eigenmann as Cydopium cydopum as belonging to a 

 different and undescribed species which he names Arges 

 eigenmanni. 



*Read before the Biological Society of Washington, January 23, 1904. 



f A Revision of the South American Nematognathi or Catfishes, Occasional Papers 

 Cal. Ac. Scl., I, 1890, 347-351. 



I A Monograph of the Fishes of the Family Loricariidae, Trans. Zool. Soc. London, 

 XVII, Part III, Oct., 1904, 191 to 326, Plates XV-XXI. Rec'd Oct. 13 and read Nov. 17, 1903. 



Since the receipt of Mr. Regan's monograph this paper has been rewritten. 

 14-PROC. BIOL. Soc. WASH., VOL. XVIII, 1905. (91) 



