﻿Unstalked 
  Crinoid 
  from 
  Christmas 
  Island. 
  1*45 
  

  

  the 
  two 
  segments 
  preceding 
  the 
  penultimate 
  are 
  squarish 
  to 
  

   one-third 
  broader 
  than 
  long 
  ; 
  the 
  outer 
  segment* 
  (beyond 
  

   the 
  transition 
  segment) 
  are 
  very 
  highly 
  polished 
  and 
  bear 
  

   small 
  dorsal 
  tubercles. 
  

  

  The 
  ten 
  arms 
  are 
  about 
  90 
  mm. 
  long 
  ; 
  the 
  elements 
  of 
  the 
  

   IBr 
  series 
  appear 
  in 
  external 
  view 
  to 
  be 
  united 
  by 
  syzygy, 
  

   and 
  are 
  well 
  separated 
  laterally 
  ; 
  the 
  arms 
  resemble 
  those 
  of 
  

   Comissia 
  liitkeni 
  ; 
  the 
  brachials 
  overlap 
  rather 
  strongly. 
  

   The 
  distal 
  iutersyzygial 
  interval 
  is 
  usually 
  three 
  oblique 
  

   muscular 
  articulations. 
  

  

  Pi 
  to 
  pi 
  provided 
  with 
  combs; 
  p 
  x 
  is 
  about 
  12 
  mm. 
  long, 
  

   and 
  has 
  a 
  comb 
  with 
  about 
  twenty-five 
  exceptionally 
  long 
  

   teeth; 
  the 
  comb 
  of 
  p± 
  has 
  fifteen 
  or 
  sixteen 
  teeth, 
  beyond 
  

   which 
  extends 
  a 
  toothless 
  tip 
  ; 
  only 
  nine 
  segments 
  of 
  p^ 
  are 
  

   not 
  supplied 
  with 
  teeth. 
  

  

  Hob. 
  Christmas 
  Island 
  ; 
  the 
  type 
  is 
  in 
  the 
  British 
  

   Museum. 
  

  

  The 
  other 
  known 
  species 
  of 
  the 
  genus 
  Comissia 
  are 
  : 
  — 
  

  

  Comissia 
  ignota, 
  A. 
  H. 
  Clark 
  : 
  Amirante 
  Islands 
  ; 
  17 
  

   fathoms. 
  

  

  Comissia 
  peregrina 
  (Bell) 
  : 
  Macclesfield 
  Bank 
  ; 
  55-60 
  

   fathoms. 
  

  

  Comissia 
  liitkeni, 
  A. 
  H. 
  Clark: 
  Philippine 
  Islands; 
  

   49-71 
  fathoms. 
  

  

  Comissia 
  dumetum, 
  A. 
  H. 
  Clark 
  : 
  Philippine 
  Islands 
  ; 
  

   58 
  fathoms. 
  

  

  Comissia 
  hispida, 
  A. 
  H. 
  Clark 
  ; 
  Philippine 
  Islands 
  ; 
  51 
  

   fathoms. 
  

  

  Comissia 
  horridus, 
  A. 
  H. 
  Clark 
  : 
  Philippine 
  Islands 
  ; 
  58 
  

   fathoms. 
  

  

  Comissia 
  scitulus 
  } 
  A. 
  H. 
  Clark: 
  Philippine 
  Islands; 
  58 
  

   fathoms. 
  

  

  Comissia 
  sp. 
  (figured, 
  as 
  a 
  ten-armed 
  specimen 
  of 
  Coman- 
  

   thus 
  parvicirra, 
  in 
  Chadvvick, 
  ' 
  Rep. 
  Ceylon 
  Pearl 
  Oyster 
  

   Fisheries,' 
  Part 
  ii., 
  Supplementary 
  Report 
  xi., 
  plate, 
  fig. 
  13} 
  : 
  

   Ceylon; 
  about 
  100 
  fathoms. 
  

  

  