﻿[To 
  face 
  p. 
  362. 
  

  

  agrams 
  of 
  three 
  recent 
  crinoids 
  showing 
  the 
  course 
  of 
  the 
  

   le 
  plates. 
  Drawn 
  in 
  the 
  same 
  position 
  as 
  fig. 
  5, 
  for 
  direct 
  

   plates 
  are 
  simply 
  outlined, 
  the 
  canals 
  are 
  shaded. 
  

  

  e 
  normal 
  type. 
  7. 
  Ehizocrinus 
  ; 
  no 
  ring-canal. 
  8. 
  Bathycrinus 
  

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

  

  Diagrammatic 
  ground-plans 
  of 
  the 
  usual 
  pattern. 
  The 
  

   he 
  radials 
  merely 
  outlined, 
  and 
  the 
  canals, 
  where 
  they 
  pass 
  

   are 
  in 
  solid 
  black. 
  

  

  Fig. 
  11. 
  

  

  Fig. 
  12. 
  

  

  10. 
  RhizoGrinus. 
  11. 
  Bathycrinus. 
  12. 
  Eugeniacrinus 
  ; 
  

   here 
  is 
  of 
  course 
  theoretical, 
  as 
  the 
  basals 
  cannot 
  be 
  dis- 
  

   m 
  the 
  adult. 
  

  

  