﻿PLATE 
  XIX. 
  

  

  EUCALYPTOCRINUS 
  CELATUS 
  Hall. 
  

   Page 
  142. 
  

  

  Fig. 
  1. 
  The 
  interior 
  of 
  the 
  dome 
  of 
  a 
  large 
  imperfect 
  specimen, 
  showing 
  the 
  

   snpraradial 
  plates 
  of 
  adjacent 
  rays, 
  with 
  the 
  double 
  interradial 
  plate 
  

   between 
  them 
  in 
  the 
  lower 
  central 
  part 
  of 
  the 
  figure; 
  also 
  the 
  arm- 
  

   openings 
  (the 
  rhomboidal 
  depressions) 
  and 
  the 
  plates 
  forming 
  the 
  

   lower 
  part 
  or 
  sides 
  of 
  the 
  dome. 
  Above 
  this 
  is 
  the 
  dome 
  covering 
  

   the 
  aperture 
  which,' 
  in 
  the 
  lower 
  part, 
  is 
  composed 
  of 
  four 
  anchy- 
  

   losed 
  plates, 
  as 
  farther 
  shown 
  in 
  fig. 
  3. 
  These 
  are 
  surmounted 
  by 
  

   a 
  fluted 
  hollow 
  column, 
  which 
  reaches 
  to 
  the 
  summit 
  of 
  the 
  inter- 
  

   brachial 
  plates. 
  In 
  this 
  specimen 
  it 
  is 
  broken 
  off 
  above. 
  On 
  the 
  

   outer 
  parts 
  of 
  the 
  figure 
  on 
  either 
  side 
  may 
  be 
  seen 
  the 
  inter- 
  

   brachial 
  plates, 
  with 
  the 
  sutures 
  dividing 
  them 
  from 
  the 
  inner 
  

   parrs. 
  

  

  Fig. 
  3. 
  The 
  lower 
  concave 
  surface 
  of 
  the 
  anchylosed 
  plates, 
  which 
  form 
  the 
  base 
  

   of 
  the 
  dome 
  over 
  the 
  visceral 
  cavity 
  of 
  Eucalyptocrinus 
  ccelatus. 
  

  

  EUCALYPTOCRINUS 
  CRASSUS 
  Hall. 
  

   Page 
  141. 
  

   Fig 
  2. 
  The 
  upper 
  rim 
  of 
  a 
  flattened 
  calyx 
  of 
  this 
  species, 
  showing 
  the 
  cicatrices 
  

  

  for 
  the 
  attachment 
  of 
  the 
  arms 
  and 
  interbrachial 
  places. 
  

   Figs. 
  4, 
  5. 
  The 
  outer 
  and 
  inner 
  surfaces 
  of 
  a 
  lower 
  dome 
  plate 
  of 
  this 
  species, 
  

   showing 
  it 
  to 
  be 
  of 
  much 
  greater 
  length 
  than 
  the 
  corresponding 
  part 
  

   of 
  Eucalyptocrinus 
  ccelatus. 
  

  

  Roots 
  of 
  Eucalyptocrinus. 
  

  

  Page 
  144. 
  

   Figs. 
  6, 
  7. 
  Upper 
  and 
  lateral 
  views 
  of 
  a 
  group 
  of 
  roots, 
  which 
  have 
  grown 
  

  

  upon 
  the 
  exterior 
  of 
  a 
  calyx 
  of 
  Eucalyptocrinus 
  ccelatus. 
  

   Fig. 
  8. 
  The 
  upper 
  side 
  of 
  a 
  larger 
  root 
  with 
  base 
  of 
  column, 
  which 
  has 
  grown 
  

  

  upon 
  the 
  surface 
  of 
  the 
  calcareous 
  mud 
  of 
  the 
  sea 
  bottom. 
  

  

  Calceocrixus 
  stigmatus 
  Hall. 
  

  

  Page 
  147. 
  

   Fig. 
  9. 
  Dorsal 
  view 
  of 
  the 
  body 
  of 
  a 
  specimen 
  enlarged 
  to 
  two 
  diameters. 
  

   Fig. 
  10. 
  Ventral 
  side 
  enlarged 
  to 
  two 
  diameters, 
  showing 
  the 
  scars 
  for 
  the 
  

  

  attachment 
  of 
  the 
  lateral 
  and 
  dorsal 
  arms, 
  and 
  for 
  the 
  ventral 
  

  

  plates. 
  

   Fig. 
  11. 
  Lateral 
  view 
  of 
  the 
  same, 
  enlarged. 
  

  

  