EIGHTEEN NEW SPECIES OF FISHES FROM 

 NORTHWESTERN SOUTH AMERICA.^ 



By carl H. EIGENMANN. 



(Read October 5, 1917.) 



In preparing a monograph on the fresh-water fishes of the 

 northwestern corner of South America, the region west of the 

 Andes from Peru to Panama, the species described in this paper 

 were found to be new. Other preHminary accounts of new species 

 from the same region have been described in Indiana University 

 Studies, Nos. 16, 18, 19, 20, 23, 24 and 25, and in articles No. V., 

 VI., VII., and IX. of the Annals of the Carnegie Musemn, Vol. X. 



The specimens were collected by Manuel Gonzales, Charles 

 Wilson, Arthur Henn and myself. 



Manuel Gonzales collected in part under the auspices of Indiana 

 University, and in part under the joint auspices of Indiana Uni- 

 versity and the Carnegie Museum. He collected for Indiana Uni- 

 versity in the lower levels of the Magdalena Basin at and near 

 Puerto Berrio and at Apulo. Also, along the route from Bogota 

 to Villavicencio and Barrigona, on the Meta River, largely at 

 Villavicencio and Barrigona. He collected for Indiana University 

 and the Carnegie Museum along the routes from Honda on the 

 Magdalena River eastward to Facatativa, from Bogota north to 

 Mogotes in the Province of Santander and eastward from Bogota 

 along the route to Villavicencio. Along these routes he secured an 

 unequalled collection of fishes from the mountain rivulets of the 

 eastern Andes, both on the eastern and western slope. 



Messrs. Wilson and Henn collected under the auspices of 

 Indiana University chiefly through the generosity of Mr. Hugh 

 McK. Landon, of Indianapolis, assisted also by Mr. Carl G. Fisher 

 of Indianapolis. 



1 Contribution from the Zoological Laboratory of Indiana University, 

 No. 160. 



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