﻿PLATE 
  XVIII. 
  

  

  EUCALYPTOCKIKUS 
  CRASSUS 
  Hall, 
  

   Page 
  141. 
  

   Fig. 
  1. 
  Lateral 
  view 
  of 
  a 
  large 
  calyx, 
  which 
  is 
  constricted 
  below 
  the 
  middle. 
  

  

  Fig. 
  2. 
  Lateral 
  view 
  of 
  specimen 
  without 
  the 
  constriction, 
  with 
  regularly 
  sloping 
  

  

  sides. 
  This 
  specimen 
  preserves 
  some 
  of 
  the 
  lower 
  plates 
  of 
  the 
  

  

  arms. 
  

   Fig. 
  3. 
  Basal 
  view 
  of 
  the 
  specimen 
  tig. 
  1, 
  showing 
  the 
  arrangement 
  of 
  plates 
  

  

  and 
  the 
  deep 
  cavity 
  for 
  the 
  reception 
  of 
  the 
  column, 
  with 
  the 
  

  

  basal 
  plates 
  in 
  the 
  bottom. 
  

   Fig. 
  4. 
  Lateral 
  view 
  of 
  a 
  large 
  specimen, 
  preserving 
  the 
  interbrachial 
  plates, 
  the 
  

  

  spaces 
  between 
  which 
  are 
  filled 
  with 
  limestone. 
  

   Fig. 
  5. 
  The 
  summit 
  of 
  the 
  specimen 
  fig. 
  4, 
  showing 
  lanceolate 
  depressions 
  in 
  

  

  the 
  upper 
  ends 
  of 
  the 
  interbrachials 
  apparently 
  for 
  the 
  insertion 
  of 
  

  

  accessory 
  plates. 
  

   Fig. 
  6. 
  Lateral 
  view 
  of 
  a 
  smaller 
  specimen, 
  which 
  is 
  more 
  pointed 
  at 
  the 
  upper 
  

  

  end, 
  but 
  otherwise 
  retaining 
  the 
  characters 
  of 
  this 
  species. 
  

   Fig. 
  7. 
  The 
  summit 
  of 
  the 
  preceding 
  specimen, 
  showing 
  but 
  two 
  intercalated 
  

  

  plates 
  around 
  the 
  aperture. 
  

   Fig. 
  8. 
  An 
  enlargement 
  from 
  the 
  summit 
  of 
  another 
  individual, 
  showing 
  four 
  

  

  intercalated 
  plates. 
  

   Fig. 
  9. 
  An 
  enlargement 
  of 
  the 
  bases 
  of 
  a 
  pair 
  of 
  arms, 
  and 
  of 
  the 
  adjacen 
  

  

  plates, 
  from 
  fig. 
  7, 
  Plate 
  17, 
  to 
  show 
  their 
  arrangement. 
  

  

  