﻿U. 
  S- 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS, 
  VOL. 
  XX 
  PL. 
  XXVIII 
  

  

  

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  irj 
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  cwt 
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  /w 
  em 
  

  

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  /cm 
  5 
  

  

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  8 
  

  

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  Ml 
  

  

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  ^ 
  < 
  1 
  . 
  , 
  y 
  

  

  

  10 
  ^ 
  "" 
  ^ 
  

  

  Parasitic 
  Worms 
  (^fonollo^hrium\ 
  from 
  Sucker, 
  (Schistocej)haius) 
  from 
  Blob, 
  

  

  (Cyafhocephahis) 
  FROM 
  WhITEFISH, 
  AND 
  (Dibothrium) 
  FROM 
  COD. 
  

  

  For 
  explanation 
  of 
  plate 
  see 
  pages 
  453 
  454. 
  

  

  