PLATE XV 
Iie. 1. Apteronotus anas Higenmann and Allen, sp. nov. 15433, type, 
365 mm., Iquitos. 
Via. 2. Oedemognathus exodon Myers. 15421, 92 mm. to base of caudal 
fin, Iquitos. 
Fia. 3. Lips and teeth of same. 
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