﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS. 
  VOL. 
  96 
  PLATE 
  33 
  

  

  

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  is 
  

  

  Urechis 
  caupo 
  Fisher 
  and 
  MacGinitie 
  

  

  FOR 
  EXPLANATION 
  SEE 
  PAGE 
  290 
  

  

  