﻿NO. 
  1133. 
  TREMATODE 
  PAIiASITES 
  OF 
  FISHES— 
  LIXTOX. 
  513 
  

  

  7. 
  DIPLOSTOMUM 
  CUTICOLA 
  Diesing. 
  

   (Plates 
  XLl, 
  fij-s. 
  6-10; 
  XLII, 
  tigs. 
  1-5.) 
  

  

  iJiplonlomum 
  cuticola 
  UiESiNG, 
  Syst. 
  Helm., 
  I, 
  p. 
  306; 
  Kevis. 
  d. 
  Myzlielni, 
  pp. 
  317- 
  

   318 
  ; 
  Archives 
  de 
  Medicine 
  comparr^e, 
  I. 
  pp. 
  108-111. 
  pi. 
  iv, 
  iigs. 
  1, 
  2, 
  5. 
  — 
  Leidy, 
  

   Proc. 
  Acad. 
  Phil., 
  VITI 
  (1856), 
  p. 
  45. 
  

  

  Body 
  divided 
  iuto 
  two 
  parts, 
  anterior 
  elongated, 
  elliptical 
  thin, 
  exca- 
  

   vated 
  below, 
  obtusely 
  angular 
  in 
  front, 
  inucli 
  longer 
  than 
  posterior 
  part, 
  

   which 
  is 
  ovoid 
  or 
  ellipsoidal, 
  with 
  a 
  terminal 
  excretory 
  pore. 
  Anterior 
  

   sucker 
  small 
  oval,_ 
  with 
  a 
  cleft-like 
  longitudinal 
  aperture; 
  pharynx 
  

   oval; 
  ventral 
  sucker 
  median, 
  about 
  posterior 
  third 
  of 
  anterior 
  ex(;a- 
  

   vated 
  part, 
  round, 
  with 
  varying 
  aperture. 
  Generative 
  apertures, 
  like 
  a 
  

   second 
  ventral 
  sucker 
  in 
  superficial 
  appearance, 
  behind 
  ventral 
  sucker. 
  

   Known 
  only 
  in 
  larval 
  state, 
  in 
  which 
  it 
  exists 
  in 
  capsules 
  under 
  skin 
  

   and 
  especially 
  under 
  serous 
  membrane 
  of 
  various 
  fresh-water 
  fishes. 
  

  

  I 
  have 
  two 
  lots 
  of 
  these 
  parasites, 
  the 
  first 
  beh)iigs 
  to 
  the 
  National 
  

   Museum 
  collection 
  (N'o. 
  4843) 
  from 
  Lepomis 
  auntK.s; 
  the 
  second 
  sent 
  

   to 
  me 
  by 
  Mr. 
  N. 
  A. 
  Harvey, 
  Kansas 
  City, 
  Missouri, 
  January, 
  1894, 
  

   from 
  Eupomotiti 
  pallldus 
  and 
  Ch(cnohri/ftus 
  (/idosHs. 
  (Xos. 
  4842, 
  4844. 
  

   U.S.y.M.) 
  

  

  Mr. 
  Harvey's 
  collections 
  consisted 
  of 
  the 
  hearts 
  and 
  livers 
  of 
  several 
  

   fish, 
  whose 
  serous 
  coats 
  were 
  thickly 
  studded 
  with 
  these 
  parasites. 
  

  

  One 
  of 
  these 
  larvte 
  removed 
  from 
  its 
  cyst 
  was 
  measured 
  with 
  the 
  fol- 
  

   lowing 
  result: 
  Length, 
  1.09 
  mm.; 
  greatest 
  breadth, 
  0.37; 
  length 
  of 
  

   oral 
  sucker, 
  0.07; 
  breadth 
  of 
  oral 
  sucker, 
  0.05; 
  length 
  of 
  pharynx, 
  

   0,04; 
  breadth 
  of 
  pharynx, 
  0.03: 
  diameter 
  of 
  ventral 
  sucker, 
  0.07. 
  

  

  There 
  were 
  also 
  some 
  exceedingly 
  minute 
  cysts 
  on 
  the 
  bulbus 
  arteri- 
  

   osus 
  of 
  one 
  of 
  the 
  specimens, 
  which 
  appear 
  to 
  be 
  younger 
  specimens 
  of 
  

   this 
  same 
  trematode. 
  

  

  The 
  National 
  Museum 
  specimens 
  are 
  also 
  cysts 
  or 
  capsules 
  on 
  and 
  

   about 
  the 
  heart. 
  They 
  are 
  very 
  numerous 
  and 
  in 
  size 
  vary 
  from 
  minute 
  

   specks 
  to 
  capsules 
  over 
  1 
  mm. 
  in 
  diameter. 
  

  

  The 
  dimensions 
  of 
  the 
  larval 
  worms 
  do 
  not 
  differ 
  materially 
  from 
  those 
  

   given 
  above 
  Most 
  of 
  the 
  capsules 
  are 
  ellipsoidal 
  and 
  are 
  usually 
  fast- 
  

   ened 
  to 
  the 
  peritoneum 
  by 
  a 
  slender 
  pedicel. 
  The 
  specimens 
  in 
  Mr. 
  

   Harvey's 
  collection 
  were 
  found 
  lying 
  in 
  capsules 
  which 
  were 
  closely 
  

   attached 
  to 
  the 
  serous 
  coat 
  of 
  the 
  heart 
  and 
  live'r. 
  

  

  The 
  final 
  host 
  of 
  this 
  parasite 
  is 
  not 
  known. 
  It 
  is 
  probably 
  tome 
  pis- 
  

   civorous 
  bird. 
  

  

  8. 
  DISTOMUM 
  TORNATUM 
  Rudolphi. 
  

   (Plate 
  XLII, 
  tigs. 
  6-12.) 
  

  

  Distomum 
  tornatum 
  Dujardin, 
  Hist. 
  Nat. 
  d. 
  Helm., 
  1845, 
  p. 
  421. 
  — 
  Diesing, 
  Syst. 
  

   Helm., 
  1, 
  1850, 
  p. 
  372.— 
  Cobbold, 
  Synops. 
  Dist., 
  1859, 
  p. 
  28.— 
  Wagener, 
  Arch, 
  

   f. 
  Naturg., 
  XXVI, 
  1860, 
  p. 
  176, 
  pi. 
  viii, 
  figs. 
  1-5.— 
  Stossich, 
  Dist. 
  d. 
  Pesc, 
  1886, 
  

   p. 
  12. 
  

  

  Body 
  unarmed, 
  slender, 
  whitish 
  with 
  the 
  internal 
  organs 
  showing 
  

   opaque 
  white, 
  yellow, 
  or 
  brown 
  through 
  the 
  semi-transparent 
  integu- 
  

   ment, 
  which, 
  in 
  these 
  specimens, 
  is 
  crossed 
  with 
  fine 
  transverse 
  liu'es. 
  

   Proc. 
  N. 
  M. 
  vol. 
  XX 
  33 
  

  

  