﻿118 
  COLLECTIONS 
  FROM 
  MELANESIA. 
  

  

  step. 
  Coloration 
  can 
  only 
  be 
  safelj' 
  used 
  when 
  tho 
  hypothesis 
  that 
  

   the 
  genus 
  or 
  group 
  is 
  of 
  so 
  late 
  an 
  origin 
  as 
  not 
  to 
  have 
  yet 
  deve- 
  

   loped 
  definite 
  structural 
  characters 
  by 
  which 
  its 
  species 
  may 
  be 
  

   discriminated 
  is 
  not 
  controverted 
  by 
  any 
  one 
  species 
  ; 
  where 
  it 
  is, 
  

   the 
  character 
  must 
  be 
  less 
  freely 
  used, 
  probably 
  to 
  disappear 
  more 
  

   and 
  more, 
  not 
  so 
  much 
  with 
  the 
  increased 
  evolution 
  of 
  the 
  genus 
  as 
  

   with 
  our 
  increased 
  knowledge 
  of 
  it. 
  

  

  The 
  succeeding 
  pages 
  contain 
  an 
  account 
  of, 
  or 
  the 
  names 
  of, 
  

   124 
  species, 
  very 
  fairlj' 
  divided 
  among 
  the 
  5 
  orders. 
  Of 
  these 
  there 
  

   are 
  30 
  new 
  species, 
  15 
  of 
  which 
  lielong 
  to 
  the 
  Crinoids 
  and 
  the 
  

   other 
  15 
  to 
  the 
  remaining 
  orders. 
  There 
  is 
  no 
  new 
  Echinid 
  ; 
  but 
  

   I 
  have 
  had 
  to 
  suggest 
  a 
  new 
  name 
  for 
  the 
  form 
  which 
  by 
  some 
  has 
  

   been 
  regarded 
  as 
  Salmacis 
  globator. 
  

  

  ECHINOIDEA. 
  

  

  1. 
  Phyllacantlius 
  annulifera. 
  

  

  A. 
  Agassiz, 
  Rev. 
  Ech. 
  p. 
  387 
  *. 
  

  

  A 
  most 
  valuable 
  and 
  important 
  series 
  for 
  exhibiting 
  the 
  variation 
  

   of 
  this 
  species. 
  

  

  Thursday 
  Island 
  ; 
  Port 
  Molle 
  (14 
  fms.) 
  ; 
  Port 
  Curtis 
  ; 
  Prince 
  of 
  

   "Wales 
  Channel 
  ; 
  Albany 
  Island 
  ; 
  Port 
  Darwin. 
  

  

  2. 
  Diadema 
  setosum. 
  

   A. 
  Agassiz, 
  Rev. 
  Ech. 
  p. 
  274. 
  

  

  Port 
  Molle 
  ; 
  coral-reef. 
  

  

  3. 
  Salmacis 
  bicolor. 
  

   A. 
  Agassiz, 
  Rev. 
  Ech. 
  p. 
  471. 
  

  

  A 
  good 
  series, 
  with 
  spines 
  well 
  preserved 
  on 
  most 
  from 
  Port 
  

   MoHe. 
  

  

  4. 
  Salmacis 
  sulcata. 
  

   A. 
  Agassiz, 
  Rev. 
  Ech. 
  p. 
  476. 
  

  

  Port 
  Denison 
  (4 
  fms.) 
  ; 
  Port 
  MoUe 
  (14 
  fms.). 
  

  

  5, 
  Salmacis 
  alexandri, 
  

  

  Salmacis 
  globator, 
  Alex. 
  Agassiz 
  {not 
  L. 
  Agassiz), 
  Rev. 
  Ech. 
  p. 
  473 
  ; 
  

  

  '•ChaUenqer' 
  Reports, 
  iii. 
  p. 
  113. 
  

   Salmacis 
  globator, 
  form 
  a, 
  Bell, 
  P. 
  Z. 
  S. 
  1880, 
  p. 
  433, 
  pi. 
  xli. 
  fig. 
  1. 
  

  

  In 
  the 
  third 
  part 
  of 
  my 
  " 
  Observations 
  on 
  the 
  Characters 
  of 
  the 
  

  

  * 
  As 
  a 
  rule, 
  I 
  shall 
  give 
  only 
  one 
  bibliographical 
  reference, 
  and 
  that 
  to 
  the 
  

   ' 
  Bevision 
  of 
  the 
  Echini 
  ' 
  of 
  Prof. 
  Alex. 
  Agassiz. 
  

  

  