﻿39 
  

  

  like 
  AcUnoplirys 
  f^ol 
  that 
  I 
  would 
  pronounce 
  it 
  the 
  same. 
  

   The 
  Freia 
  producta 
  AVright, 
  was 
  most 
  common 
  ; 
  tills 
  

   creature 
  is 
  related 
  to 
  the 
  fresh-water 
  trumpet 
  animal- 
  

   cules, 
  and 
  is 
  one 
  of 
  the 
  most 
  beautiful 
  protozoans 
  I 
  have 
  

   ever 
  seen. 
  I 
  reproduce 
  here, 
  with 
  some 
  changes, 
  my 
  

   description 
  of 
  the 
  Chesapeake 
  form 
  from 
  the 
  American 
  

   Naturalist 
  for 
  November, 
  1880. 
  "The 
  tubes 
  in 
  which 
  

   "the 
  animalcules 
  reside 
  are 
  formed 
  of 
  a 
  narrow 
  trans- 
  

   " 
  parent 
  ribbon 
  of 
  horny 
  consistency, 
  wound 
  into 
  a 
  si)ir- 
  

   "al 
  and 
  terminating 
  in 
  a 
  trumpet-shaped 
  extremity 
  from 
  

   "which 
  the 
  odd 
  peristome 
  of 
  the 
  inhabitant 
  protrudes. 
  

   "The 
  basal 
  or 
  attached 
  end 
  is 
  usually 
  bent 
  at 
  an 
  angle 
  

   "to 
  the 
  tube 
  and 
  bears 
  a 
  striking 
  resemblance 
  to 
  the 
  

   "foot 
  end 
  of 
  a 
  stocking 
  resting 
  upon 
  the 
  sole. 
  This 
  por- 
  

   "tion 
  is 
  not 
  composed, 
  like 
  the 
  tube, 
  of 
  a 
  spiral 
  ribbon, 
  

   "but 
  is 
  simply 
  a 
  thin-walled 
  sac, 
  from 
  the 
  open-end 
  of 
  

   "which 
  the 
  ribl)on 
  takes 
  its 
  rise, 
  V>iit 
  it 
  is 
  composed 
  of 
  

   "the 
  same 
  kind 
  of 
  material. 
  Many 
  of 
  the 
  tubes 
  show 
  a 
  

   "trumpet-like 
  rim 
  projecting 
  from 
  the 
  sides 
  of 
  the 
  form- 
  

   ' 
  ' 
  er, 
  a 
  little 
  above 
  the 
  middle, 
  and 
  of 
  the 
  same 
  form 
  as 
  

   "the 
  terminal 
  rim, 
  showing 
  that 
  this, 
  like 
  the 
  form 
  de- 
  

   " 
  scribed 
  by 
  Mr. 
  Wright 
  from 
  British 
  waters, 
  may 
  stop 
  

   "building 
  its 
  tube 
  for 
  a 
  time 
  and 
  then 
  recommence. 
  

  

  "The 
  adult 
  animal 
  tube 
  and 
  all, 
  when 
  fully 
  extended 
  

   "will 
  measure 
  1-25 
  of 
  an 
  inch 
  in 
  length. 
  It 
  is 
  of 
  the 
  

   "same 
  color 
  as 
  Stentor 
  cieruleus, 
  or 
  l)ottle 
  green, 
  but 
  has 
  

   ' 
  ' 
  the 
  power 
  of 
  elongating 
  and 
  twisting 
  itself 
  as 
  greatly 
  as 
  

   '■' 
  8. 
  roeseli. 
  The 
  peristome 
  is 
  quite 
  unlike 
  that 
  of 
  Freia 
  

   "•ampulla, 
  and 
  bears 
  a 
  strong 
  likeness 
  to 
  the 
  blades 
  of 
  a 
  

   "pair 
  of 
  obstetrical 
  forceps. 
  The 
  blades 
  are 
  deeply 
  

   "grooved, 
  forming 
  a 
  deep 
  ciliated 
  demi-canal 
  with 
  paral- 
  

   "lel 
  saides, 
  and 
  at 
  the 
  junction 
  of 
  their 
  bases 
  lies 
  the 
  

   "spacious, 
  twisted 
  and 
  spirally 
  ciliated 
  pharynx, 
  which 
  

   "is 
  bounded 
  dorsally 
  and 
  ventrally 
  by 
  the 
  jnominent 
  

   "folds 
  which 
  unite 
  on 
  either 
  side 
  with 
  the 
  long 
  curved 
  

   "lobes 
  of 
  the 
  peristome. 
  There 
  is 
  a 
  small 
  basal 
  disc 
  

   "as 
  in 
  Stentor, 
  and 
  the 
  ectosarc 
  is 
  traversed 
  as 
  in 
  that 
  

  

  