﻿544 
  PMOCEEDixas 
  of 
  the 
  national 
  museum. 
  

  

  Platk 
  XLIII. 
  

  

  Itixloiiiiim 
  nij'oviride 
  l^ndoliilii. 
  

  

  Fig. 
  1. 
  LoiigitiKliual 
  vertical 
  st-ctioii 
  thioiigli 
  head. 
  /. 
  lip. 
  Zeiss 
  2, 
  A, 
  draw-tube 
  

   opeu. 
  

  

  2. 
  Section 
  through 
  ovary 
  aud 
  part 
  of 
  testis. 
  Specimen 
  somewhat 
  distorted, 
  and 
  

  

  section 
  not 
  ((uite 
  at 
  right 
  angles 
  to 
  axis 
  of 
  body. 
  Zeiss 
  2/A, 
  draw-tube 
  

   open. 
  

  

  3. 
  Transverse 
  section 
  tlirough 
  vas 
  deferens, 
  prostate 
  gland, 
  and 
  iiterns. 
  2/D, 
  

  

  draw-tube 
  open. 
  

  

  4. 
  Diagram 
  of 
  cirrus, 
  vas 
  deferens, 
  prostate 
  gland, 
  seminal 
  receptacle, 
  aud 
  

  

  uterus. 
  

  

  Distoiiuuii 
  lucre, 
  new 
  species, 
  from 
  Mdcroiiriix 
  Ixdrdii. 
  

  

  r>. 
  Ventral 
  view 
  of 
  specimen, 
  alcoholic. 
  Enlarged 
  six 
  times. 
  

  

  6. 
  Side 
  A'ievsr 
  of 
  same. 
  Enlarged 
  six 
  times. 
  

  

  7. 
  Ventral 
  view 
  of 
  anterior 
  end. 
  Enlarged 
  about 
  one 
  hundred 
  aud 
  eighty 
  times. 
  

  

  8. 
  Transverse 
  section 
  through 
  ovary, 
  vitelline 
  glands, 
  and 
  posterior 
  excretory 
  

  

  vessel. 
  Zeiss 
  4/A, 
  draw-tube 
  open. 
  

  

  Plate 
  XLIV. 
  

   Distomum 
  lucre, 
  new 
  species. 
  

  

  Fig. 
  1. 
  Dorsal 
  view. 
  i)artly 
  diagrammatic. 
  Enlarged 
  forty 
  times, 
  sr 
  anterior, 
  and 
  

   sr' 
  posterior 
  seminal 
  recejjtacle, 
  er 
  jiosterior 
  excretory 
  vessel, 
  ex' 
  , 
  ex' 
  , 
  

   anterior 
  branches 
  of 
  same. 
  

  

  histumum 
  monticcUii, 
  new 
  species, 
  from 
  Ilemora 
  remora. 
  

  

  2. 
  Ventral 
  view 
  of 
  living 
  specimen. 
  Enlarged 
  twenty 
  times. 
  

  

  3. 
  Diagrammatic 
  side 
  view 
  of 
  anterior 
  end. 
  

  

  4. 
  Cirrus 
  pouch 
  and 
  seminal 
  receptacle 
  as 
  seen 
  through 
  the 
  wall 
  of 
  the 
  body 
  

  

  of 
  a 
  specimen 
  made 
  transparent 
  with 
  oil 
  of 
  cloves. 
  

  

  5. 
  Transverse 
  section 
  of 
  body 
  through 
  the 
  posterior 
  edge 
  of 
  the 
  genital 
  a2)er- 
  

  

  ture. 
  Zeiss 
  4/A, 
  draw-tube 
  open. 
  //. 
  a. 
  genital 
  aperture. 
  

  

  6. 
  Transverse 
  section 
  through 
  anterior 
  half 
  of 
  ventral 
  suckei'. 
  Zeiss 
  2/A, 
  draw- 
  

  

  tube 
  open. 
  

  

  7. 
  Transverse 
  section 
  through 
  iio.sterior 
  2>iirt 
  of 
  ovary 
  and 
  anterior 
  lobes 
  of 
  

  

  \itelline 
  gland, 
  

   ^i. 
  View 
  of 
  ventral 
  sucker 
  in 
  life, 
  showing 
  velum. 
  

  

  Dixtominn 
  (/raiid'qjorum 
  Rndolphi, 
  from 
  AnguUla 
  chrysiipa. 
  

  

  it. 
  Sketch 
  of 
  speeiuu^n 
  compressed, 
  stained 
  and 
  mounted 
  in 
  Canada 
  balsam. 
  

   Enlarged 
  tweuty-seveu 
  times. 
  

  

  Plate 
  XLV. 
  

   Distomum 
  auriculatum 
  Wedl?, 
  from 
  Acipeiiser 
  ruhlcuiidux. 
  

  

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

  

  2. 
  Same 
  of 
  another 
  specimen. 
  Enlarged 
  twenty-seven 
  times. 
  

  

  3. 
  Dorsal 
  view 
  of 
  head 
  of 
  same. 
  Enlarged 
  thirty 
  times. 
  

  

  4. 
  Transverse 
  section 
  of 
  body 
  near 
  base 
  of 
  cirrus 
  pouch. 
  Zeiss 
  4/A, 
  draw- 
  

  

  tube 
  open. 
  

   .5. 
  Transverse 
  section 
  of 
  body 
  through 
  testis. 
  Zeiss 
  4/A, 
  draw-tube 
  open. 
  

  

  6. 
  Transverse 
  section 
  near 
  posterior 
  end 
  of 
  body. 
  Zeiss 
  4/A, 
  draw-tube 
  open. 
  

  

  7. 
  Transverse 
  section 
  of 
  excretory 
  vessel 
  at 
  terminal 
  pore. 
  Zeiss 
  2/D, 
  draw- 
  

  

  tube 
  open. 
  

  

  