﻿ALCYONARIA. 
  365 
  

  

  and 
  approaching 
  the 
  forms 
  of 
  this 
  which 
  are 
  found 
  in 
  Acaharia 
  

   japonica 
  and 
  anstrulis. 
  

  

  Hah. 
  Port 
  Molle, 
  Queensland, 
  12-20 
  fms. 
  ; 
  bottom 
  consisting 
  of 
  

   rock 
  and 
  coral. 
  Port 
  Darwin, 
  8-12 
  fms. 
  ; 
  bottom 
  sand, 
  mud, 
  and 
  

   shells. 
  Also 
  East 
  Australia, 
  42 
  fms. 
  {coll, 
  F. 
  M.Rayner 
  in 
  Mas. 
  Brit.). 
  

  

  Ohs. 
  This 
  is 
  the 
  most 
  delicate 
  of 
  all 
  known 
  Melithreidse. 
  From 
  

   their 
  extreme 
  fragility, 
  the 
  specimens, 
  which 
  are 
  all 
  dry, 
  are 
  all 
  

   imperfect 
  ; 
  the 
  longest 
  piece 
  is 
  40 
  millim. 
  high 
  ; 
  but 
  probably 
  none 
  

   of 
  the 
  specimens 
  exceeded 
  60 
  millim. 
  in 
  height 
  and 
  greatest 
  width 
  

   respectively. 
  Perhaps 
  half 
  a 
  dozen 
  original 
  specimens 
  are 
  represented. 
  

   It 
  is 
  remarkable 
  that 
  the 
  length 
  of 
  the 
  internodes 
  and 
  the 
  size 
  

   of 
  the 
  large 
  cortical 
  spicule 
  vary 
  inversely 
  to 
  the 
  stoutness 
  of 
  the 
  

   internodes. 
  

  

  TUBIPORID^. 
  

   38. 
  Tuhipora 
  hemprichi. 
  

  

  Ehrenberg, 
  Cor. 
  roth. 
  Meer. 
  p. 
  55. 
  

  

  A 
  single 
  dry 
  mass. 
  

  

  Hah. 
  North-east 
  coast 
  of 
  Australia. 
  

  

  Ohs. 
  Klunzinger 
  identifies 
  a 
  species 
  from 
  near 
  Timor 
  as 
  T. 
  rubeola, 
  

   Quoy 
  and 
  Gaimard, 
  and 
  it 
  does 
  not 
  appear 
  that 
  he 
  met 
  with 
  this 
  

   species 
  on 
  the 
  coast 
  of 
  Australia. 
  T. 
  rubeola, 
  however, 
  resembles 
  

   T. 
  hemjyrichi 
  considerably 
  in 
  the 
  rather 
  widely 
  separated 
  tubes 
  and 
  

   the 
  length 
  of 
  tube 
  between 
  the 
  horizontal 
  (external) 
  diaphragms 
  ; 
  but 
  

   in 
  the 
  latter 
  point 
  it 
  exceeds 
  T. 
  hemprichi, 
  and 
  must 
  be 
  regarded 
  as 
  

   quite 
  distinct 
  from 
  it, 
  owing 
  to 
  the 
  red 
  colour 
  assigned 
  to 
  its 
  polypes, 
  

   those 
  of 
  T. 
  hemprichi 
  being 
  grey. 
  

  

  