﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS, 
  VOL. 
  XX 
  PL. 
  Llll 
  

  

  

  ^ 
  urn 
  ^ 
  

  

  i—t 
  

  

  t 
  'Wm 
  

  

  PARASITIC 
  WORMS. 
  

  

  DiSTOMUM 
  FROM 
  SMOOTH 
  PUFFER, 
  COD, 
  SWORDFISH, 
  AND 
  SaND 
  PIKE. 
  

   For 
  explanation 
  of 
  plate 
  see 
  pages 
  547, 
  548. 
  

  

  