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  CONTRIBUTIONS 
  TO 
  THE 
  KNOWLEDGE 
  OF 
  RHABDOPLEURA 
  

   AND 
  AMPHIOXUS. 
  

  

  By 
  E. 
  RAY 
  LANKESTER, 
  M.A., 
  LL.D., 
  F.R.S. 
  

   London: 
  J. 
  & 
  A, 
  Chubchill, 
  7 
  Great 
  Marlborough 
  Street. 
  

  

  Quarterly 
  Journal 
  of 
  Microscopical 
  

  

  Science. 
  

  

  The 
  SUBSCKIPTION 
  is 
  £2 
  for 
  the 
  Volume 
  of 
  Four 
  Numbers; 
  

   for 
  this 
  sum 
  {^re-pald) 
  the 
  Jouknal 
  is 
  sent 
  Post 
  Free 
  to 
  any 
  part 
  

   of 
  the 
  world. 
  

  

  BACK 
  NUMBERS 
  of 
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  which 
  remain 
  in 
  print, 
  are 
  

   now 
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  at 
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  uniform 
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  The 
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  being 
  found 
  inconvenient, 
  

   and 
  there 
  being 
  often 
  in 
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  Editor's 
  hands 
  an 
  accumulation 
  of 
  

   valuable 
  material, 
  it 
  has 
  been 
  decided 
  to 
  publish 
  this 
  Journal 
  at 
  

   such 
  intervals 
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  may 
  seem 
  desirable, 
  rather 
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  delay 
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  appear- 
  

   ance 
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  for 
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  regular 
  quarterly 
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  course 
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  yeai*. 
  

  

  Each 
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  and 
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   London 
  : 
  J. 
  & 
  A. 
  CHURCHILL, 
  7 
  Great 
  Marlborough 
  Street. 
  

  

  TO 
  CORRESPONDENTS. 
  

  

  Authors 
  of 
  original 
  papers 
  published 
  in 
  the 
  Quarterly 
  Journal 
  

   of 
  Microscopical 
  Science 
  receive 
  twenty-five 
  copies 
  of 
  their 
  

   communication 
  gratis. 
  

  

  All 
  expenses 
  of 
  publication 
  and 
  illustration 
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  paid 
  by 
  the 
  

   publishers. 
  

  

  As 
  a 
  rule 
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  Contributors 
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  requiring 
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  own 
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  can 
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  applying 
  

   to 
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  Printers, 
  

  

  Messrs, 
  Adlard 
  & 
  Son, 
  22.^, 
  Bartholomew 
  Close, 
  E.C., 
  on 
  

   the 
  following 
  terms 
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  For 
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  „ 
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  100 
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  every 
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   Prepayment 
  by 
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  Order 
  is 
  requested. 
  

   All 
  Communications 
  for 
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  Editors 
  to 
  be 
  addressed 
  to 
  the 
  care 
  

   OF 
  Messrs. 
  J. 
  & 
  A. 
  Churchill, 
  7 
  Great 
  Marlborough 
  Street, 
  

   London, 
  W. 
  

  

  