﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS, 
  VOL. 
  67, 
  ART. 
  27 
  PL. 
  6 
  

  

  Mandibles 
  of 
  Gorilla 
  and 
  Sea 
  Lion 
  

  

  For 
  explanation 
  of 
  plate 
  see 
  page 
  If 
  

  

  