﻿NO. 
  1133. 
  TBEMATODE 
  PARASITES 
  OF 
  FISHES— 
  LIXTOX. 
  515 
  

  

  Tlieie 
  is 
  obviously 
  a 
  confusion 
  of 
  terms 
  here, 
  but 
  I 
  have 
  not 
  felt 
  justi- 
  

   lic'd 
  ill 
  referring- 
  this 
  specinu'ii 
  to 
  a 
  new 
  species. 
  

  

  No. 
  4859, 
  U.S.N.M. 
  

  

  Body 
  terete, 
  elongated, 
  transversely 
  plicate; 
  tail 
  shorter, 
  retractile. 
  

   Acetabulum 
  sessile, 
  prominent, 
  rather 
  large, 
  equaling 
  the 
  anterior 
  sucker, 
  

   or 
  larger. 
  Mouth 
  subterininal, 
  contiguous 
  to 
  pharynx. 
  CEsophagus, 
  

   none. 
  Vitelline 
  glands 
  two, 
  large, 
  juxtaposed, 
  one 
  nearly 
  simple, 
  the 
  

   other 
  trilobed. 
  Ovary 
  globose, 
  median, 
  near 
  anterior 
  margins 
  of 
  vitel- 
  

   hiria. 
  Uterus 
  not 
  descending 
  into 
  the 
  caudal 
  ai^pendage. 
  Testes 
  two, 
  

   globose 
  or 
  elliptical, 
  median, 
  transversely 
  oblique, 
  each 
  somewhat 
  less 
  

   than 
  the 
  ovary. 
  Bursa 
  of 
  penis 
  ovate, 
  situated 
  at 
  the 
  right-hand 
  ante- 
  

   rior 
  margin 
  of 
  the 
  acetabulum. 
  Genital 
  aperture 
  almost 
  in 
  the 
  middle 
  

   of 
  the 
  neck. 
  Cirrus 
  thick, 
  curved, 
  beset 
  with 
  minute 
  papilhe. 
  Excre- 
  

   tory 
  vessel 
  median, 
  forked 
  near 
  testes, 
  with 
  branches 
  confluent 
  between 
  

   mouth 
  and 
  pharynx; 
  vescicle 
  and 
  foramen 
  at 
  apex 
  of 
  caudal 
  ai)pei)dage. 
  

   Length 
  § 
  to 
  5 
  mm. 
  [Olsson.j 
  

  

  The 
  following 
  dimensions 
  are 
  of 
  living 
  specimens, 
  side 
  view, 
  slightly 
  

   flattened: 
  Length, 
  3.20 
  mm.; 
  breadth, 
  anterior, 
  0.20; 
  breadth, 
  median, 
  

   0.42; 
  breadth, 
  posterior, 
  0.20; 
  diameter 
  of 
  oral 
  sucker, 
  0.20; 
  diameter 
  of 
  

   ventral 
  sucker, 
  0.20; 
  distance 
  between 
  suckers, 
  variable, 
  0.20; 
  length 
  

   of 
  ova, 
  0.025; 
  breadth 
  of 
  ova, 
  0.014. 
  

  

  The 
  color 
  was 
  bluish-white 
  with 
  a 
  golden-yellow 
  center, 
  due 
  to 
  the 
  

   voluminous 
  uterus 
  filled 
  with 
  yellow 
  ova. 
  

  

  Found 
  in 
  intestine 
  of 
  Pomatomiis 
  saltatrir. 
  One 
  specimen. 
  Woods 
  

   Holl, 
  Massachusetts, 
  July 
  9, 
  1887. 
  

  

  10. 
  DISTOMUM 
  RUFOVIRIDE 
  Rudolphi. 
  

   (Plates 
  XLII, 
  fig. 
  14; 
  XLIII, 
  figs. 
  1-4.) 
  

  

  Bistommn 
  niforiride 
  Du.jardin, 
  Hist. 
  Nat. 
  d. 
  Helm., 
  1845, 
  p. 
  421.— 
  DiESiNr,, 
  

   Syst. 
  Helm., 
  I, 
  18.50, 
  p. 
  372.— 
  Molin, 
  Sitzniigsb. 
  Wiener 
  Akad., 
  XXXVII, 
  

   1859, 
  p. 
  844.— 
  CoBnoLD, 
  Syiiops. 
  Distom., 
  1859, 
  p. 
  22. 
  — 
  Wagener, 
  Arch, 
  

   f. 
  Natnrg., 
  XXVI, 
  1860, 
  p. 
  178, 
  pi. 
  viii, 
  figs. 
  6-10.— 
  Molin, 
  Denksclir, 
  

   Wiener 
  Akad., 
  XIX, 
  1861, 
  p. 
  205, 
  pi. 
  ii, 
  figs. 
  1, 
  2, 
  4, 
  5.— 
  Olssox, 
  Entozoa 
  

   Skandin. 
  Hafsfisk., 
  Ill, 
  1868, 
  p. 
  49; 
  lUdr. 
  till. 
  Skaudin, 
  Helminthfanna, 
  I, 
  

   1876, 
  p. 
  20.— 
  Stossich, 
  Bull. 
  Soc 
  Adriat. 
  Trieste, 
  VIII, 
  1883, 
  p. 
  115.— 
  Carus, 
  

   Prodr. 
  Faume 
  Mediterr., 
  I, 
  1884, 
  p. 
  125.— 
  .Stossich, 
  Bull. 
  Soc. 
  Adriat. 
  

   Trieste, 
  IX, 
  1885, 
  p. 
  159. 
  — 
  Prknant, 
  Recherches 
  sur 
  lea 
  Vers 
  Parasites, 
  

   Nancy, 
  1885, 
  p. 
  19, 
  pi. 
  ii, 
  figs. 
  1-5.— 
  Stossich, 
  Dist. 
  d. 
  Pesc. 
  Trieste, 
  1885, 
  p. 
  

   13.— 
  SoNsixo, 
  Estr. 
  d. 
  Pr. 
  d. 
  Soc. 
  Tosc. 
  d. 
  Sci. 
  Nat., 
  1890, 
  p. 
  11. 
  

  

  I 
  add 
  the 
  following 
  synonymy 
  on 
  the 
  authority 
  of 
  Stossich: 
  

  

  DisioiuKm 
  caiidijwrton 
  Dcjardix, 
  Hist. 
  Nat. 
  d. 
  Helm., 
  p. 
  422.— 
  Diksixg, 
  Syst. 
  

   Helm., 
  I, 
  p. 
  342.— 
  COBBOLD, 
  Synops. 
  Distom., 
  1859, 
  p. 
  22.— 
  Wagener, 
  Arch, 
  

   f. 
  Natnrg., 
  XXVI, 
  p. 
  181. 
  

  

  Body 
  unarmed, 
  cylindrical, 
  thick, 
  subatteuuate 
  at 
  the 
  two 
  extremi 
  

   ties, 
  more 
  at 
  posterior 
  than 
  ariterior; 
  neck 
  more 
  slender 
  than 
  body, 
  

   excavate 
  below; 
  tail 
  short 
  and 
  retractile; 
  ventral 
  sucker 
  twice 
  the 
  size 
  

   of 
  the 
  oral, 
  globose 
  or 
  hemispherical, 
  at 
  the 
  base 
  of 
  the 
  neck. 
  

  

  