﻿Plate 
  is 
  

  

  Page 
  

  

  Fig. 
  1. 
  Reptoclausa 
  denticulata, 
  new 
  species 
  ._ 
  82 
  

  

  The 
  encrusting 
  zoarium, 
  X6. 
  

  

  Lower 
  Cretaceous 
  (Aptian) 
  : 
  Faringdon, 
  England. 
  

   Figs. 
  2-5. 
  Reptoclausa 
  hagenowi 
  Sharpe, 
  1854 
  ,32 
  

  

  2. 
  An 
  encrusting 
  zoarium, 
  X6. 
  

  

  3. 
  Lateral 
  view 
  of 
  a 
  fascicle, 
  X12. 
  

  

  4. 
  Longitudinal 
  section, 
  X25, 
  showing 
  the 
  thickness 
  of 
  

  

  the 
  crest 
  and 
  the 
  oblique 
  arrangement 
  of 
  the 
  tubes. 
  

  

  5. 
  Transverse 
  section 
  of 
  a 
  branch, 
  X25. 
  

  

  Lower 
  Cretaceous 
  (Aptian): 
  Faringdon, 
  England. 
  

   Figs. 
  6-8. 
  Reptoclausa 
  meanelrina 
  DeLoriol, 
  1868. 
  82 
  

  

  6. 
  7. 
  Portions 
  of 
  the 
  same 
  zoarium, 
  ■ 
  C>, 
  on 
  opposite 
  sides 
  

  

  of 
  a 
  shell. 
  

   8. 
  Branches 
  of 
  a 
  zoarium, 
  X12. 
  

  

  Lower 
  Cretaceous 
  (Valangian) 
  : 
  Sainte-Croix, 
  Swit- 
  

   zerland. 
  

  

  Ill 
  

  

  