﻿LIST 
  OF 
  ILLUSTRATIONS 
  XVII 
  

  

  Facing 
  page 
  

  

  26. 
  Plethoporella 
  ramulosa 
  D'Orbigny, 
  1853. 
  A. 
  Longitudinal 
  section, 
  

  

  X 
  8, 
  in 
  a 
  zoarium 
  containing 
  a 
  partially 
  enveloping 
  subcolony, 
  the 
  

   initial 
  tube 
  of 
  which 
  is 
  at 
  r. 
  B. 
  Portion 
  of 
  fig. 
  A, 
  X 
  16. 
  C. 
  Part 
  

   of 
  longitudinal 
  section, 
  X 
  16, 
  through 
  a 
  tuberosity 
  where 
  the 
  tubes 
  

   are 
  broader. 
  D. 
  Portion 
  of 
  a 
  transverse 
  section, 
  X 
  16. 
  E. 
  Tan- 
  

   gential 
  section, 
  X 
  16, 
  showing 
  the 
  larger 
  tubes 
  of 
  the 
  tuberosities 
  

   and 
  the 
  other 
  smaller 
  tubes. 
  Upper 
  Cretaceous 
  (Maastrichtian) 
  : 
  

   Royan, 
  France 
  54 
  

  

  27. 
  Chartecytis 
  compressa, 
  new 
  species. 
  A 
  meridian 
  section, 
  X 
  16, 
  show- 
  

  

  ing 
  the 
  special 
  method 
  of 
  ramification 
  of 
  the 
  branches. 
  B. 
  Longi- 
  

   tudinal 
  section, 
  X 
  16, 
  illustrating 
  the 
  peripheral 
  gemmation. 
  C. 
  

   Transversal 
  thin 
  section, 
  X 
  16. 
  D. 
  Zooecial 
  walls, 
  X 
  45, 
  showing 
  

   the 
  minute 
  central 
  vesicles. 
  Lower 
  Cretaceous 
  (Valangian) 
  : 
  Sainte- 
  

   Croix, 
  Switzerland 
  55 
  

  

  28. 
  Relenoa 
  campicheana 
  D'Orbigny, 
  1853. 
  Longitudinal 
  section, 
  X 
  16, 
  

  

  showing 
  the 
  cylindrical 
  tubes 
  and 
  the 
  intrazoarial 
  gemmation. 
  

   Lower 
  Cretaceous 
  (Valangian): 
  Sainte-Croix, 
  Switzerland 
  56 
  

  

  29. 
  Radiofascigera 
  ramosa 
  D'Orbigny, 
  1853. 
  A. 
  Longitudinal 
  section, 
  

  

  X 
  16. 
  The 
  tubes 
  are 
  thickened 
  at 
  their 
  extremity. 
  B. 
  Transverse 
  

   section, 
  X 
  16. 
  Lower 
  Cretaceous 
  (Valangian) 
  : 
  Sainte-Croix, 
  

   Switzerland 
  59 
  

  

  30. 
  Multifascigera 
  campicheana 
  D'Orbigny, 
  1853. 
  Transverse 
  section, 
  X 
  

  

  4, 
  showing 
  the 
  origin 
  of 
  a 
  superior 
  subcolony. 
  Lower 
  Cretaceous 
  

   (Valangian); 
  Sainte-Croix, 
  Switzerland 
  61 
  

  

  31. 
  Multigalea 
  canui 
  Gregory, 
  1909. 
  Longitudinal 
  section, 
  X 
  16. 
  Lower 
  

  

  Cretaceous 
  (Aptian) 
  : 
  Faringdon, 
  England 
  62 
  

  

  32. 
  Lobosoecia 
  semiclausa 
  Michelin, 
  1845. 
  A. 
  Transverse 
  section 
  X 
  16. 
  

  

  B. 
  Longitudinal 
  section, 
  X 
  16, 
  at 
  the 
  extremity 
  of 
  a 
  branch. 
  The 
  

   tubes 
  are 
  widened 
  and 
  have 
  dorsal 
  gemmation. 
  Cretaceous: 
  Le- 
  

   mans, 
  France 
  63 
  

  

  33. 
  Meliceritites 
  transversa, 
  new 
  species. 
  A. 
  Transverse 
  section, 
  X 
  16, 
  

  

  made 
  between 
  the 
  orifices. 
  The 
  peristomes 
  were 
  in 
  transverse 
  

   somewhat 
  oblique 
  rows 
  which 
  causes 
  the 
  helicoidal 
  arrangement 
  of 
  

   the 
  peripheral 
  tubes. 
  B. 
  Transverse 
  section, 
  X 
  16, 
  cutting 
  some 
  

   orifices. 
  C. 
  Longitudinal 
  section, 
  X 
  16. 
  The 
  clear 
  tubes 
  are 
  cut 
  

   along 
  the 
  median 
  axis 
  while 
  the 
  shaded 
  ones 
  are 
  cut 
  tangentially 
  to 
  

   their 
  walls, 
  this 
  arrangement 
  resulting 
  from 
  the 
  disposition 
  of 
  the 
  

   peristomes 
  in 
  transverse 
  rows. 
  At 
  the 
  center 
  is 
  a 
  long 
  tube 
  which 
  

   may 
  branch. 
  Lower 
  Cretaceous 
  (Aptian) 
  : 
  Faringdon, 
  England 
  65 
  

  

  34. 
  Ceriocava 
  junctata, 
  new 
  species. 
  Transverse 
  section, 
  X 
  16, 
  through 
  

  

  a 
  solid 
  cylindrical 
  branch. 
  Lower 
  Cretaceous 
  (Valangian) 
  : 
  Sainte- 
  

   Croix, 
  Switzerland 
  68 
  

  

  35. 
  Ceriocava 
  multilamellosa, 
  new 
  species. 
  A. 
  Transverse 
  section 
  of 
  

  

  specimen 
  D, 
  X 
  16. 
  B. 
  Transverse 
  section, 
  X 
  16. 
  C. 
  Section 
  

   through 
  a 
  branch, 
  X 
  16, 
  in 
  which 
  the 
  exterior 
  lamella 
  is 
  engendering 
  

   an 
  adventitious 
  branch. 
  D. 
  Longitudinal 
  section 
  (see 
  also 
  A), 
  X 
  

   16, 
  in 
  which 
  the 
  orifices 
  are 
  arranged 
  in 
  quincunx. 
  E. 
  Longitudinal 
  

   section, 
  X 
  16, 
  at 
  the 
  extremity 
  of 
  a 
  branch. 
  F. 
  Longitudinal 
  sec- 
  

   tion, 
  X 
  16, 
  through 
  a 
  multilamellar 
  branch. 
  Lower 
  Cretaceous 
  

   (Valangian): 
  Sainte-Croix, 
  Switzerland 
  69 
  

  

  