Proceedings of 

 the United States 

 National Museum 



SMITHSONIAN INSTITUTION • WASHINGTON, D.C. 



Volume 116 1964 Number 3498 



ONE NEW SPECIES AND TWO REDESCRIPTIONS OF 

 CATFISHES OF THE SOUTH AMERICAN CALLICHTHYID 

 GENUS CORYDORAS 



By Stanley H. Weitzman 



Recent examination of three specimens of a new catfish from 

 Brazil, herein described as Corydoras semiaquilus, has instigated re- 

 examination and redescription of its apparent relatives, C. treitlii 

 Steindachner (1906) and C.fowleri Bohlke (1950). C.fowleri is known 

 only from the holotype, which was described without illustration. In 

 addition, the original description of C. fowleri, like that of C. cochui 

 Myers and Weitzman (1954) (see Weitzman, 1956), was published in 

 an aquarium magazine not available in many university libraries, 

 C. treitlii has never been illustrated and its original description, al- 

 though excellent for its time, is now inadequate in the light of many 

 subsequent new species. Discovery of apparent close relatives of C. 

 treitlii has made reexamination and description of the type specimens 

 imperative. 



I am indebted to Professor George S. Myers for the loan of speci- 

 mens and the use of facilities in the Division of Systematic Biology 

 at Stanford University ; to Dr. Paul Kahsbauer of the Naturhistorisches 

 Museum, Wien, for the loan of type specimens of Corydoras described 

 by Franz Steindachner; to Mr. W. I. Follett, Curator of Fishes of the 

 California Academy of Sciences, for the loan of specimens; to Mr. 



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