﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS, 
  V01_. 
  98 
  PUATE 
  15 
  

  

  

  C 
  

   nS 
  

   u 
  

  

  •ft. 
  

  

  5 
  

  

  c 
  

   _o 
  

  

  o 
  

   O 
  

  

  

  O 
  

   C 
  

  

  c 
  

  

  o 
  

  

  

  

  Ui 
  

  

  3 
  

  

  OS 
  

   C 
  

  

  

  3 
  

   c3 
  

  

  3 
  

  

  

  