Indiana University Studies 



Nos. 23, 24, 25 BLOOMINGTON, INDIANA September 5, 1914 



Prefatory Note 



The present papers form a continuation of Studies No. 16, 18, 

 19, and 20. They contain preliminary accounts of new facts 

 chiefly concerning the freshAvater fishes of northAvestern South 

 America. The collections on AA^hich the papers are based were 

 made by the Landon-Fisher Expedition to trans- Andean Colombia, 

 the Landon Ecuadorian Expedition, and the Indiana UniA^ersity 

 Expedition to the Meta River of Cis- Andean Colombia. 



