﻿^'o.il33. 
  TREMATODE 
  PABASITES 
  OF 
  FISHES— 
  LINTON. 
  547 
  

  

  Platk 
  LI. 
  

   Disfomum 
  foJiatiim, 
  new 
  species. 
  

  

  Fig. 
  1. 
  Part 
  of 
  section 
  of 
  ventral 
  sucker 
  as 
  seen 
  in 
  a 
  transverse 
  section 
  of 
  the 
  l>ouy. 
  

   Zeiss 
  2/ 
  A, 
  (Iraw-tul)e 
  closed. 
  

  

  2. 
  Part 
  of 
  section 
  of 
  ventral 
  sucker, 
  irom 
  longitudinal 
  vertical 
  section 
  of 
  the 
  

  

  body. 
  Zeiss 
  2/A, 
  draw-tube 
  closed. 
  

  

  3. 
  Transverse 
  section 
  of 
  the 
  neck 
  through 
  the 
  ^iharnyx. 
  cr. 
  nuchal 
  crest. 
  Zeiss 
  

  

  2/A, 
  draw-tube 
  open. 
  

  

  4. 
  Transverse 
  section 
  of 
  neck 
  a 
  little 
  farther 
  back 
  than 
  tig. 
  3, 
  cr. 
  nuchal 
  

  

  crest. 
  Zeiss 
  2/A, 
  draw 
  tube 
  open. 
  

  

  Note. 
  — 
  The 
  vessels 
  i 
  i 
  in 
  this 
  and 
  the 
  preceding 
  figure 
  have 
  been 
  identi- 
  

   fied 
  as 
  intestinal 
  rami, 
  although 
  the 
  connection 
  between 
  them 
  and 
  the 
  

   (I'sophagns 
  could 
  not 
  be 
  demonstrated 
  from 
  the 
  sections. 
  They 
  oi'igiuate 
  

   in 
  front 
  of 
  the 
  pharynx 
  as 
  shown 
  in 
  F^ig. 
  3, 
  where 
  they 
  already 
  have 
  the 
  

   chnracteristic 
  structure 
  of 
  intestinal 
  vessels." 
  It 
  is 
  probable 
  that 
  in 
  this 
  

   and 
  the 
  preceding 
  spi'cies, 
  as 
  well 
  as 
  in 
  D. 
  macrocoiiih', 
  the 
  communication 
  

   between 
  o-sopuagus 
  and 
  intestinal 
  rami 
  is 
  something 
  like 
  that 
  demon- 
  

   strated 
  in 
  I), 
  chiratum. 
  Plate 
  LIII, 
  tigs. 
  ^-10. 
  

  

  Distomnm 
  iiUeug, 
  new 
  s]iecies, 
  from 
  Tj/losio'iis 
  vorihlxiiis. 
  

  

  5. 
  Lateral 
  view, 
  partly 
  diagrammatic, 
  specimen 
  somewhat 
  distorted 
  by 
  com- 
  

  

  pression. 
  Enlarged 
  aboiit 
  twenty-three 
  times. 
  

  

  6. 
  Ova. 
  Zeiss 
  2/D, 
  draw-tube 
  open. 
  

  

  Pl.\te 
  LIT. 
  

   Disiomnvi 
  vitens. 
  

  

  Fig. 
  1. 
  Cirrus 
  bulb 
  as 
  seen 
  through 
  transparent 
  walls 
  of 
  body, 
  rd 
  portion 
  of 
  vas 
  

   deferens 
  inclosed 
  within 
  muscular 
  walls 
  of 
  cirrus 
  bulb. 
  Enlarged 
  forty- 
  

   five 
  times. 
  

  

  Disfomum 
  Uniie, 
  new 
  species, 
  from 
  liocciis 
  lineaiHu. 
  

  

  2. 
  Superficial 
  view, 
  life. 
  Enlarged 
  twenty-five 
  times. 
  Sketch 
  by 
  Margaret 
  

  

  B. 
  Linton. 
  

  

  3. 
  View 
  of 
  same, 
  compressed. 
  Enlarged 
  twenty-five 
  times. 
  Sketch 
  by 
  Mar- 
  

  

  garet 
  B. 
  Linton. 
  

  

  4. 
  Partial 
  view 
  of 
  ventral 
  sucker 
  of 
  same. 
  Enlarged 
  two 
  hundred 
  and 
  twenty- 
  

  

  five 
  times. 
  Sketch 
  by 
  Margaret 
  B. 
  Linton. 
  

  

  5. 
  Sketch 
  of 
  alcoholic 
  specimen, 
  enlarged. 
  

  

  6. 
  Ventral 
  view 
  of 
  anterior 
  end 
  of 
  same, 
  more 
  enlarged. 
  

  

  7. 
  Ventral 
  view 
  of 
  alcoholic 
  specimen 
  in 
  acetic 
  acid. 
  Enlarged 
  twenty-five 
  

  

  tinu's. 
  

  

  8. 
  Transverse 
  section 
  of 
  body 
  through 
  ovary, 
  f. 
  anterior 
  edge 
  of 
  testis. 
  Zeiss 
  

  

  2/A, 
  draw-tube 
  open. 
  

  

  Distomum 
  tenue 
  tenuissime, 
  new 
  subspecies, 
  from 
  Roccits 
  lineatns. 
  

  

  9. 
  Side 
  view 
  of 
  alcoholic 
  sjiecimen. 
  Enlarged 
  twelve 
  times. 
  

  

  10. 
  Ventral 
  view 
  of 
  another 
  specimen. 
  Enlarged 
  twenty-four 
  times. 
  

  

  11. 
  Head 
  of 
  same, 
  enlarged. 
  Zeiss 
  2/A, 
  draw-tube 
  open. 
  

  

  12. 
  Cysts 
  of 
  connective 
  tissue 
  of 
  host 
  containing 
  ova, 
  

  

  Plate 
  LIII. 
  

  

  Distomum, 
  species, 
  from 
  Lagocephalus 
  Uvvigaius. 
  

  

  Fig. 
  1. 
  Ventral 
  view 
  of 
  specimen 
  in 
  oil 
  of 
  cloves. 
  Enlarged 
  twenty-two 
  times. 
  

   2, 
  Ovum 
  of 
  same. 
  Zeiss 
  4/D, 
  draw-tube 
  open. 
  

  

  