NO. 3538 CHARACID FISHES — WEITZMAN 7 



very extensive aquarium literature. Many references to the aquarium 

 literature concerning these fishes can be obtained from Hoedeman 

 (1950). 

 The following abbreviations are used: 



AM Zoological Museum, Amsterdam 



ANSP Academy of Natural Sciences, Philadelphia 



CAS California Academy of Sciences 



CAS (lUM) Specimens formerly at the Indiana University Museum and now 



at the California Academy of Sciences but still bearing Indiana 



University Museum numbers 

 CNHM Chicago Natural History Museum 



MCZ Museum of Comparative Zoology, Harvard 



USNM United States National Museum 



For loan of specimens I am mdebted to Dr. George S. Myers of 

 Stanford University, W. I. Follett of the California Academy of 

 Sciences, Loren P. Woods of the Chicago Natural History Museum, 

 Dr. Giles Mead of the Museum of Comparative Zoology, Harvard 

 University and Dr. James Bohlke of the Academy of Natural Sciences 

 of Philadelphia. I am indebted greatly to Dr. George S. Myers for 

 numerous discussions and for critically reading the original manu- 

 script. In addition the following people have read the manuscript 

 at various stages, all offeruig useful advice and aid : Drs. Paul Erlich, 

 Myra Keen and Warren Freihofer of Stanford University, Mrs. 

 Lillian Dempster of the California Academy of Sciences, and Drs. 

 Robert H. Gibbs, Jr., and Victor G. Springer of the U.S. National 

 Museum. 



I am indebted also to Gen. Thomas D. White for forwarding living 

 specimens of Nannostomus marginatus from eastern Colombia so that 

 I could record their life colors. All drawings are by the author with 

 the exception of figure 6, the anal fin of a male Nannostomus digrammus 

 prepared by Dr. Margaret Bradbury. 



The work was begun and largely completed at the Department of 

 Biological Sciences, Stanford University. Additional work was done 

 at the Department of Anatomy, Stanford University, and the U.S. 

 National Museum, Smithsonian Institution. 



Note on figures: Figures 1, 2, 4, 5, 7, 8, 9, 11, and 12 show male 

 specimens with the antorbital and first three orbital bones and the 

 third set (counting from the anterior end of the jaw base) of upper 

 (premaxillary) and lower (maxillary) teeth. The enlarged scale (or 

 scales) is from the third longitudinal scale row of the left side, just 

 below the dorsal fin except where noted in the text. These parts are 

 all drawn from alizarin specimens. 



