﻿Figure!* 
  1-4- 
  Drawings 
  ad 
  nataram, 
  X 
  5 
  diameters, 
  of 
  specimens 
  c 
  

  

  Kini.Diu.Tttiti 
  ,;t,j/„i>hlill« 
  ■' 
  IV.mi 
  I'lii;;. 
  Il,;ir<|i 
  -In 
  »V 
  

  

  Figure 
  5. 
  Semidiagraininatic, 
  X 
  10 
  diameters. 
  

  

  Fig'. 
  3 
  

  

  rely 
  indicates 
  

  

  that 
  the 
  uxial 
  canal 
  does 
  not 
  branch 
  till 
  it 
  enters 
  the 
  radial 
  circlet. 
  

   '1. 
  Another 
  specimen, 
  seen 
  from 
  below. 
  The 
  five 
  radial 
  branches 
  are 
  seen, 
  

   though 
  obscured 
  by 
  silica 
  ; 
  the 
  lower 
  part 
  of 
  the 
  canals 
  is 
  broken 
  

  

  '6. 
  Portion 
  of 
  a 
  dorsal 
  cup 
  from 
  which 
  two 
  radials 
  have 
  been 
  removed. 
  

   The 
  thin 
  shell, 
  which 
  is 
  all 
  that 
  remains 
  of 
  the 
  once 
  solid 
  radial, 
  is 
  

   broken 
  away 
  on 
  the 
  right. 
  Traces 
  of 
  the 
  interradial 
  branches 
  are 
  

   seen 
  proceeding 
  from 
  the 
  axial 
  canal. 
  

  

  4. 
  This 
  specimen 
  shows 
  the 
  canals 
  very 
  clearly, 
  as 
  it 
  is 
  not 
  so 
  much 
  

   obscured 
  by 
  silica. 
  The 
  outer 
  wall 
  is 
  drawn 
  as 
  more 
  broken 
  away 
  

   than 
  it 
  is 
  in 
  the 
  specimen. 
  In 
  addition 
  to 
  the 
  interradial 
  canals, 
  

   secondary 
  branches, 
  and 
  radial 
  canals, 
  this 
  shows 
  the 
  short 
  side 
  

   branches 
  and 
  traces 
  of 
  the 
  ring-canal. 
  This 
  latter 
  is 
  indicated 
  by 
  

   of 
  the 
  side 
  branches 
  at 
  their 
  distal 
  ends. 
  The 
  

   > 
  uppermost 
  in 
  the 
  figure. 
  

   1 
  reconstructed 
  figure, 
  semidiagrammatic. 
  The 
  hollow 
  shell 
  of 
  the 
  

   radials 
  is 
  broken 
  open 
  and 
  the 
  internal 
  structure 
  disclosed. 
  The 
  

   ring-canal 
  is 
  moved 
  rather 
  more 
  to 
  the 
  oral 
  surface 
  than 
  it 
  is 
  in 
  

   nature, 
  so 
  as 
  to 
  display 
  the 
  several 
  branches. 
  

  

  •al 
  end 
  is 
  m 
  

  

  Fig. 
  fi. 
  Pentacrimts 
  ; 
  the 
  normal 
  

  

  tacrimts; 
  the 
  normal 
  type. 
  7. 
  Ehizocrinus; 
  no 
  ring-canal. 
  8. 
  Bathycrinu, 
  

   interradial 
  branches 
  pass 
  up 
  between 
  tho 
  first 
  radials; 
  no 
  ring-canal. 
  

  

  res 
  9-12. 
  Diagrammatic 
  eround-nlans 
  of 
  the 
  usual 
  nattern. 
  The 
  

  

  9-12. 
  Diagrammatic 
  ground-plans 
  of 
  the 
  usual 
  patter] 
  

   ; 
  are 
  shaded, 
  the 
  radials 
  merely 
  outliued, 
  aud 
  the 
  canals, 
  where 
  they 
  pass 
  

   gh 
  the 
  plates, 
  are 
  in 
  solid 
  black. 
  

  

  