﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS, 
  VOL. 
  XX 
  PL. 
  XLVII 
  

  

  PARASITIC 
  WORMS. 
  

  

  DiSTOMUM 
  FROM 
  SuCKER 
  {Remora), 
  Sea 
  RaVEN, 
  AND 
  FiLEFISH. 
  

   For 
  explanation 
  of 
  plate 
  see 
  pages 
  545, 
  546. 
  

  

  