﻿420 
  JOURNAL 
  OF 
  THE 
  WASHINGTON 
  ACADEMY 
  OF 
  SCIENCES 
  VOL. 
  12, 
  NO. 
  18 
  

  

  the 
  corresponding 
  width 
  of 
  the 
  body. 
  It 
  is 
  set 
  off 
  from 
  the 
  intestine 
  

   not 
  only 
  by 
  being 
  slightly 
  less 
  in 
  diameter 
  but 
  by 
  being 
  more 
  nearly 
  

   colorless; 
  the 
  intestine 
  itself 
  is 
  yellowish 
  on 
  account 
  of 
  the 
  pres- 
  

   ence 
  in 
  its 
  cells 
  of 
  certain 
  exceedingly 
  fine 
  yellowish 
  granules. 
  The 
  

   rectum 
  is 
  readily 
  seen 
  to 
  lead 
  inward 
  and 
  forward 
  from 
  the 
  depressed 
  

   anus 
  a 
  distance 
  about 
  equal 
  to 
  the 
  anal 
  body 
  diameter. 
  The 
  anus 
  is 
  

   a 
  transverse 
  slit 
  two-fifths 
  as 
  wide 
  as 
  the 
  corresponding 
  portion 
  of 
  the 
  

   body. 
  The 
  fine 
  granules 
  of 
  rather 
  variable 
  size 
  which 
  are 
  numerous 
  

   in 
  the 
  cells 
  of 
  the 
  intestine 
  are 
  some 
  of 
  them 
  yellowish 
  in 
  color 
  and 
  taken 
  

   altogether 
  so 
  arranged 
  as 
  to 
  give 
  rise 
  to 
  a 
  faint 
  tessellated 
  effect. 
  The 
  

   largest 
  of 
  them 
  are 
  not 
  much 
  over 
  one 
  micron 
  across. 
  The 
  tail 
  is 
  nearly 
  

   hemispherical. 
  There 
  is 
  no 
  spinneret 
  and 
  there 
  are 
  no 
  caudal 
  setae. 
  

   Extending 
  backward 
  and 
  outward 
  from 
  the 
  conoid 
  protoplasmic 
  

   "core" 
  of 
  the 
  tail 
  there 
  are 
  ten 
  to 
  twelve 
  innervations, 
  which 
  are 
  

   much 
  less 
  clearly 
  visible 
  than 
  are 
  the 
  two 
  tubes 
  leading 
  outward 
  and 
  

   backward 
  from 
  the 
  two 
  lateral 
  glands 
  located 
  in 
  the 
  tail, 
  — 
  ^the 
  final 
  

   members 
  of 
  the 
  lateral 
  series 
  already 
  mentioned. 
  Similar 
  innerva- 
  

   tions 
  occur 
  toward 
  the 
  head 
  end 
  of 
  the 
  nema 
  and 
  probably 
  to 
  a 
  less 
  

   extent 
  throughout 
  the 
  body. 
  The 
  cuticle 
  on 
  the 
  tail 
  is 
  very 
  much 
  

   thicker 
  than 
  elsewhere 
  (15 
  microns) 
  and 
  is 
  characterized 
  by 
  the 
  pres- 
  

   ence 
  in 
  it 
  of 
  longitudinal 
  markings 
  which 
  indicate 
  that 
  it 
  is 
  probably 
  

   finely 
  laminated. 
  The 
  lateral 
  chords, 
  about 
  one-sixth 
  as 
  wide 
  as 
  the 
  

   body, 
  are 
  deep, 
  about 
  as 
  thick 
  as 
  the 
  body 
  wall 
  — 
  and 
  are 
  coarsely 
  

   granular. 
  Their 
  cells 
  are 
  made 
  up 
  largely 
  of 
  subspherical 
  granules 
  

   closely 
  packed 
  together 
  and 
  of 
  such 
  a 
  size 
  that 
  the 
  largest, 
  some 
  

   four 
  microns 
  across, 
  are 
  about 
  one-twentieth 
  as 
  wide 
  as 
  the 
  body. 
  

   Among 
  these 
  granules 
  are 
  scattered 
  others, 
  ellipsoidal, 
  measuring 
  

   up 
  to 
  one 
  micron, 
  and 
  characterized 
  by 
  blackening 
  in 
  Flemming's 
  

   solution. 
  The 
  nerve 
  ring, 
  which 
  surrounds 
  the 
  oesophagus 
  somewhat 
  

   squarely, 
  is 
  accompanied 
  by 
  numerous 
  rather 
  obscure 
  nerve 
  cells. 
  

   Nothing 
  is 
  known 
  concerning 
  the 
  renette. 
  Nothing 
  is 
  known 
  con- 
  

   cerning 
  the 
  sexual 
  organs. 
  

  

  Habitat: 
  Found 
  in 
  soil 
  collected 
  by 
  Prof. 
  J. 
  R. 
  Christie 
  at 
  Falls 
  

   Church, 
  Va., 
  August 
  29, 
  1922. 
  Only 
  one 
  young 
  specimen 
  seen. 
  

   Examined 
  and 
  measured 
  alive 
  in 
  water, 
  and 
  afterwards 
  fixed 
  in 
  

   Flemming's 
  solution 
  and 
  examined 
  in 
  glycerine. 
  

  

  Nygolaimus 
  is 
  manifestly 
  related 
  to 
  Dorylaimus. 
  It 
  undoubtedly 
  

   belongs 
  to 
  the 
  Dorylaimidae, 
  although 
  it 
  may 
  possibly 
  be 
  regarded 
  as 
  a 
  

   "transition 
  form." 
  Some 
  features 
  of 
  the 
  pharynx 
  remind 
  one 
  strongly 
  

   of 
  Mononchus. 
  The 
  new 
  onchia 
  are 
  sometimes 
  prepared 
  some 
  dis- 
  

  

  