﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS. 
  VOL. 
  67. 
  ART. 
  19 
  PL. 
  6 
  

  

  Tongues 
  of 
  Various 
  Birds. 
  (No. 
  42 
  ■ 
  2, 
  Others 
  X3) 
  

  

  For 
  explanation 
  of 
  plate 
  see 
  page 
  15 
  

  

  