﻿PLATE 
  XVIL 
  

  

  EUCALYPTOCRIXUS 
  CEASSUS 
  Hall. 
  

   Page 
  141. 
  

  

  Fig. 
  1. 
  A 
  young 
  individual, 
  natural 
  size, 
  showing 
  the 
  immature 
  character 
  of 
  the 
  

  

  arms. 
  

   Fig. 
  2. 
  An 
  enlargement, 
  to 
  three 
  diameters, 
  of 
  another 
  young 
  specimen, 
  show- 
  

   ing 
  the 
  immature 
  character 
  of 
  the 
  arms. 
  The 
  plates 
  of 
  the 
  body 
  

  

  have 
  the 
  same 
  features 
  as 
  in 
  the 
  more 
  advanced 
  stages 
  of 
  growth. 
  

   Fig. 
  3. 
  A 
  young 
  specimen 
  retaining 
  the 
  interbrachial 
  plates, 
  but 
  without 
  the 
  

  

  arms, 
  the 
  impression 
  of 
  the 
  tentaculae 
  being 
  retained 
  on 
  the 
  sides 
  

  

  of 
  these 
  plates. 
  

   Fig. 
  4. 
  A 
  young 
  specimen 
  similar 
  to 
  the 
  preceding, 
  referred 
  to 
  this 
  species, 
  but 
  

  

  of 
  a 
  more 
  globular 
  form 
  and 
  spreading 
  calyx. 
  

   Fig. 
  5. 
  A 
  young 
  individual 
  retaining 
  the 
  arms 
  in 
  place, 
  and 
  having 
  the 
  column 
  

  

  and 
  roots 
  entire. 
  

  

  This 
  is 
  the 
  only 
  specimen 
  yet 
  found, 
  retaining 
  all 
  the 
  parts 
  

  

  complete, 
  among 
  many 
  hundreds 
  of 
  imperfect 
  individuals 
  which 
  

  

  have 
  been 
  collected 
  at 
  the 
  locality. 
  

   Fig. 
  6. 
  Lateral 
  view 
  of 
  an 
  extremely 
  elongated 
  calyx. 
  

   Fig. 
  7. 
  Lateral 
  view 
  of 
  a 
  more 
  spreading 
  form, 
  retaining 
  parts 
  of 
  the 
  arms 
  in 
  

  

  place. 
  

   Fig. 
  8. 
  Lateral 
  view 
  of 
  a 
  more 
  elliptical 
  specimen, 
  preserving 
  the 
  interbrachial 
  

  

  plates 
  without 
  the 
  arms. 
  

   Fig. 
  9. 
  A 
  fragment 
  of 
  a 
  column 
  from 
  the 
  upper 
  and 
  middle 
  portions, 
  belonging 
  

  

  apparently 
  to 
  a 
  medium-sized 
  specimen 
  of 
  this 
  species. 
  Two 
  

  

  colonies 
  of 
  Favosites 
  have 
  commenced 
  their 
  growth 
  upon 
  it. 
  

   Fig. 
  10. 
  The 
  lower 
  part 
  of 
  an 
  interbrachial 
  plate, 
  showing 
  the 
  impression 
  of 
  the 
  

  

  tentaculae 
  and 
  the 
  arm-plates. 
  

   Fig. 
  11. 
  An 
  enlargement 
  of 
  a 
  part 
  of 
  an 
  arm, 
  showing 
  the 
  tentaculae 
  and 
  edges 
  

  

  of 
  the 
  arm-plates. 
  

  

  EUCALYPTOCRIXUS 
  OVALIS 
  TrOOSt. 
  

   Page 
  143. 
  

  

  fig. 
  12. 
  Lateral 
  view 
  of 
  a 
  very 
  perfect 
  specimen, 
  possessing 
  the 
  form 
  and 
  gen- 
  

   eral 
  characters 
  of 
  the 
  species 
  ascribed 
  to 
  it 
  by 
  Dr. 
  Troost. 
  The 
  

   arms 
  of 
  this 
  species 
  appear 
  more 
  mature 
  than 
  the 
  young 
  referred 
  

   to 
  E. 
  crassus. 
  except 
  in 
  the 
  specimen 
  figure 
  5. 
  

  

  Fig. 
  13. 
  An 
  enlargement 
  of 
  the 
  summit 
  of 
  the 
  specimen 
  fig. 
  12. 
  showing 
  the 
  

   arrangement 
  of 
  the 
  plates 
  at 
  the 
  summit 
  with 
  the 
  oral 
  plates. 
  

  

  