﻿Plate 
  23 
  

  

  Page 
  

   Figs. 
  1-4. 
  Ceriopora 
  nummular 
  ia, 
  new 
  species 
  26 
  

  

  1. 
  Zoarium, 
  natural 
  size. 
  

   2, 
  .3. 
  Fragment 
  of 
  the 
  zoarial 
  surface, 
  X12 
  and 
  X25. 
  

  

  4. 
  Base 
  of 
  a 
  zoarium, 
  X 
  12, 
  showing 
  the 
  arrangement 
  of 
  

  

  the 
  tubes 
  around 
  the 
  ancestrula. 
  

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

   land. 
  

   Figs. 
  5-7. 
  Ceriopora 
  parvipora, 
  new 
  species 
  25 
  

  

  5. 
  Zoarium, 
  natural 
  size. 
  

  

  6, 
  7. 
  Part 
  of 
  the 
  zoarial 
  surface, 
  showing 
  the 
  small 
  oral 
  tuber- 
  

   osities, 
  X12 
  and 
  X25. 
  

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

   land. 
  

  

  Figs. 
  8-10. 
  Ceriopora 
  fallax, 
  new 
  species 
  28 
  

  

  8. 
  Two 
  zoaria, 
  natural 
  size. 
  

   9, 
  10. 
  Fragment 
  of 
  the 
  superior 
  part 
  of 
  the 
  zoarium, 
  show- 
  

   ing 
  the 
  large 
  and 
  small 
  aperture, 
  X12 
  and 
  X25. 
  

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

   land. 
  

  

  Figs. 
  1 
  1-17. 
  Ceriopora 
  lobifera, 
  new 
  species 
  27 
  

  

  11, 
  12. 
  Specimens 
  with 
  short 
  and 
  irregular 
  lobes, 
  nat- 
  

   ural 
  size. 
  

   13, 
  14. 
  Zoarium, 
  natural 
  size, 
  and 
  base 
  of 
  same, 
  X12. 
  

   15, 
  16. 
  Zoarial 
  surface, 
  X12 
  and 
  X25. 
  

  

  17. 
  Portion 
  of 
  the 
  sectioned 
  zoarium 
  showing 
  the 
  

   mammillosities 
  of 
  the 
  surface, 
  X6. 
  

   Lower 
  Cretaceous 
  (Valangian) 
  : 
  Sainte-Croix, 
  

   Switzerland. 
  

   116 
  

  

  