﻿ALCYONABIA. 
  353 
  

  

  •4 
  by 
  •! 
  rnillim., 
  or 
  else 
  longer 
  and 
  pro]wrtioualIy 
  more 
  slender, 
  with 
  

   more 
  distant 
  and 
  simple 
  tubercles, 
  -4 
  ))y 
  "OS 
  millim. 
  Those 
  (ii.) 
  of 
  

   the 
  denser 
  axial 
  substance 
  are 
  shoit, 
  very 
  boldly 
  tuberculate 
  forms, 
  

   very 
  irregularly 
  modified 
  from 
  the 
  fusiform 
  types, 
  but 
  with 
  the 
  

   tubercles 
  somewhat 
  scattered 
  ; 
  size 
  •J4 
  by 
  -042 
  to 
  "IS 
  by 
  '07 
  millim. 
  ; 
  

   intermixed 
  with 
  these 
  are 
  some 
  of 
  the 
  stouter 
  and 
  longer 
  forms 
  

   which 
  compose 
  the 
  outer 
  layer. 
  The 
  spicules 
  are 
  either 
  devoid 
  of 
  

   any 
  colour 
  or 
  very 
  faintly 
  yellow. 
  

  

  Hah. 
  Arafura 
  ISca. 
  off 
  N.W. 
  coast 
  of 
  Australia, 
  32-36 
  fms. 
  ; 
  

   bottom 
  — 
  sand, 
  mud, 
  and 
  shell. 
  

  

  Ohs. 
  The 
  only 
  differences 
  which 
  distinguish 
  these 
  specimens 
  from 
  

   Klunzinger 
  s 
  are 
  the 
  pale 
  brown 
  instead 
  of 
  red 
  colour 
  of 
  the 
  corallum 
  

   as 
  a 
  whole, 
  its 
  unbranched 
  condition, 
  and 
  the 
  want 
  of 
  a 
  decided 
  

   coloration 
  of 
  the 
  spicules 
  themselves. 
  

  

  A 
  specimen 
  of 
  this 
  species 
  also 
  occurs, 
  in 
  an 
  exclusively 
  repent 
  

   form, 
  upon 
  an 
  elongated 
  sponge 
  in 
  the 
  dry 
  state 
  ; 
  it 
  extends 
  120 
  

   millim. 
  (5 
  inches) 
  horizontally, 
  exclusive 
  of 
  branches. 
  It 
  exactly 
  

   resembles 
  the 
  horizontal 
  parts 
  of 
  the 
  specimen 
  just 
  described, 
  but 
  

   sends 
  up 
  no 
  vertical 
  axes, 
  and 
  might 
  thus 
  have 
  been 
  taken 
  for 
  a 
  

   Callipodium 
  had 
  the 
  radiate 
  spicules 
  assigned 
  to 
  this 
  type 
  by 
  KoUiker 
  

   and 
  Verrill 
  been 
  present. 
  This 
  resemblance 
  of 
  the 
  young 
  stage 
  of 
  

   a 
  typical 
  liriareacean 
  to 
  that 
  genus 
  perhaps 
  supports 
  Kolliker's 
  views 
  

   as 
  t« 
  the 
  genus 
  properly 
  finding 
  its 
  place 
  among 
  the 
  Briareaceae. 
  

  

  SOLENOCAULUM. 
  

  

  Solenocaulon, 
  Gray, 
  P. 
  Z. 
  S. 
  1862, 
  p. 
  34, 
  figs. 
  p. 
  36 
  ; 
  Ann. 
  ^ 
  Mag. 
  N. 
  

  

  H. 
  (3) 
  X. 
  p. 
  147 
  (1862). 
  

   ? 
  Ccelogorgia, 
  M.-Eclwards 
  and 
  Haime, 
  Hist. 
  Cor 
  all. 
  i. 
  p. 
  191 
  (1857). 
  

   Solenogorgia, 
  Genth, 
  Zeitsch. 
  loiss. 
  Zool. 
  xvii. 
  p. 
  429 
  (1867). 
  

  

  30. 
  Solenocaulum 
  tortuosum. 
  

  

  Solenocaulon 
  tortuosum, 
  Gray, 
  II. 
  cc. 
  

  

  A 
  single 
  (dry) 
  specimen 
  of 
  this 
  very 
  remarkable 
  form 
  came 
  up 
  

   with 
  the 
  tangles 
  from 
  a 
  dredging 
  of 
  from 
  12 
  to 
  20 
  fms. 
  off 
  Port 
  

   Molle, 
  Queensland 
  ; 
  it 
  is 
  about 
  5 
  inches 
  long, 
  or 
  rather 
  less 
  than 
  

   half 
  the 
  length 
  of 
  the 
  type 
  specimen. 
  It 
  is 
  of 
  a 
  pale 
  orange 
  colour, 
  

   in 
  which, 
  as 
  in 
  its 
  other 
  external 
  as 
  well 
  as 
  in 
  its 
  microscopic 
  cha- 
  

   racters, 
  it 
  agrees 
  with 
  the 
  original 
  type 
  of 
  the 
  species. 
  The 
  stem 
  

   is 
  solid, 
  as 
  is 
  that 
  of 
  a 
  spirit-specimen 
  already 
  in 
  the 
  collection, 
  and 
  

   as 
  (so 
  far 
  as 
  I 
  have 
  been 
  able 
  to 
  ascertain 
  with 
  safety) 
  that 
  of 
  the 
  

   type 
  specimen, 
  and 
  affords 
  another 
  point 
  of 
  agreement 
  between 
  this 
  

   genus 
  and 
  Solenocjorgia 
  of 
  Genth, 
  and 
  adds 
  one 
  more 
  reason 
  to 
  those 
  

   given 
  by 
  Studer 
  (MB. 
  Ak. 
  Berlin, 
  1878, 
  p. 
  669) 
  for 
  uniting 
  the 
  

   two 
  genera 
  under 
  the 
  older 
  name 
  conferred 
  by 
  Gray, 
  a 
  proceeding 
  

   which 
  is 
  obviously 
  necessary. 
  

  

  Another 
  specimen, 
  from 
  the 
  Arafura 
  Sea, 
  fortunately 
  preserved 
  

   in 
  spirit 
  and 
  practically 
  complete, 
  although 
  two 
  apical 
  portions 
  

   are 
  detached, 
  differs 
  somewhat 
  from 
  the 
  typical 
  form. 
  It 
  has 
  a 
  

   stem 
  55 
  millim. 
  long, 
  of 
  which 
  the 
  lower 
  end, 
  to 
  the 
  length 
  of 
  about 
  

  

  