﻿LIST 
  OF 
  ILLUSTRATIONS 
  XV 
  

  

  Studies 
  on 
  the 
  Cyclostomatous 
  Bryozoa 
  

  

  By 
  Ferdinand 
  Canu 
  and 
  Ray 
  S. 
  Bassler 
  

  

  Facing 
  page 
  

  

  1. 
  Clinopora 
  quadripartite/,, 
  new 
  species. 
  A, 
  B, 
  longitudinal 
  and 
  trans- 
  

  

  verse 
  sections, 
  X 
  16. 
  Lower 
  Cretaceous 
  (Aptian) 
  : 
  Faringdon, 
  

   England 
  12 
  

  

  2. 
  Genus 
  Multicrescis 
  D'Orbigny, 
  1881. 
  A. 
  Multicrescis 
  lamellosa, 
  new 
  

  

  species. 
  Portion 
  of 
  a 
  transverse 
  section, 
  X 
  16, 
  with 
  two 
  lamellae. 
  

   Lower 
  Cretaceous 
  (Valangian) 
  : 
  Sainte-Croix, 
  Switzerland. 
  B. 
  M. 
  

   galaefera, 
  new 
  species. 
  Meridian 
  section, 
  X 
  16. 
  The 
  subcolonies 
  

   grow 
  from 
  a 
  lateral 
  tube 
  of 
  an 
  inferior 
  subcolony. 
  Lower 
  Creta- 
  

   ceous 
  (Valangian): 
  Sainte-Croix, 
  Switzerland 
  14 
  

  

  3. 
  Genus 
  Multicrescis 
  D'Orbigny, 
  1852. 
  A, 
  B. 
  Multicrescis 
  landrioti 
  

  

  Michelin, 
  1841. 
  A. 
  Portion 
  of 
  a 
  meridian 
  section, 
  X 
  16, 
  showing 
  

   two 
  superposed 
  lamellae. 
  B. 
  Sketch, 
  X 
  30, 
  exhibiting 
  annular 
  

   structure 
  of 
  the 
  tubes. 
  Lower 
  Cretaceous 
  (Valangian) 
  : 
  Sainte- 
  

   Croix, 
  Switzerland. 
  C. 
  Multicrescis 
  parvipora, 
  new 
  species. 
  Meri- 
  

   dian 
  section, 
  X 
  16. 
  The 
  tubes 
  of 
  the 
  enveloping 
  lamellae 
  are 
  per- 
  

   pendicular 
  to 
  the 
  tubes 
  of 
  the 
  primitive 
  zoarium. 
  Each 
  lamella 
  is 
  

   formed 
  of 
  a 
  variable 
  number 
  of 
  subcolonies. 
  Lower 
  Cretaceous 
  

   (Valangian): 
  Sainte-Croix, 
  Switzerland 
  15 
  

  

  4. 
  Multicrescis 
  pulchella, 
  new 
  species. 
  A. 
  Transverse 
  section, 
  X 
  16, 
  of 
  

  

  a 
  hollow 
  zoarium. 
  The 
  external 
  lamella 
  seems 
  to 
  have 
  had 
  only 
  

   one 
  tube 
  of 
  origin. 
  B. 
  Longitudinal 
  section 
  through 
  the 
  same 
  

   zoarium, 
  X 
  16, 
  showing 
  the 
  tube 
  of 
  origin 
  which 
  gave 
  rise 
  to 
  the 
  

   external 
  lamella. 
  Lower 
  Cretaceous 
  (Valangian) 
  : 
  Sainte-Croix, 
  

   Switzerland 
  17 
  

  

  5. 
  Ceriopora 
  ovoidea, 
  new 
  species. 
  A. 
  Meridian 
  section, 
  X 
  16, 
  through 
  

  

  a 
  zoarium 
  with 
  definite 
  zonal 
  lines. 
  Lower 
  Cretacious 
  (Valangian) 
  : 
  

   Sainte-Croix, 
  Switzerland 
  20 
  

  

  6. 
  Ceriopora 
  ovoidea, 
  new 
  species. 
  B. 
  Meridian 
  section 
  of 
  another 
  zoa- 
  

  

  rium, 
  X 
  16, 
  in 
  which 
  the 
  zonal 
  lines 
  have 
  been 
  transformed 
  into 
  

   basal 
  lamellae. 
  The 
  main 
  zoarial 
  tubes 
  are 
  oriented 
  in 
  a 
  different 
  

   direction 
  from 
  those 
  of 
  the 
  primitive 
  zoarium. 
  Lower 
  Cretaceous 
  

   (Valangian): 
  Sante-Croix, 
  Switzerland 
  22 
  

  

  7. 
  Ceriopora 
  angustipedis, 
  new 
  species. 
  Meridian 
  section, 
  X 
  16, 
  en- 
  

  

  tirely 
  across 
  a 
  zoarium. 
  Lower 
  Cretaceous 
  (Valangian) 
  : 
  Sainte- 
  

   Croix, 
  Switzerland 
  23 
  

  

  8. 
  Ceriopora 
  aequipedis, 
  new 
  species. 
  Meridian 
  section, 
  X 
  16. 
  Lower 
  

  

  Cretaceous 
  (Valangian) 
  : 
  Sainte-Croix, 
  Switzerland 
  24 
  

  

  9. 
  Ceriopora 
  solida, 
  new 
  species. 
  Meridian 
  section, 
  X 
  16. 
  Lower 
  Cre- 
  

  

  taceous 
  (Valangian): 
  Sainte-Croix, 
  Switzerland 
  25 
  

  

  10. 
  Ceriopora 
  parvipora, 
  new 
  species. 
  Meridian 
  section, 
  X 
  16. 
  Lower 
  

  

  Cretaceous 
  (Valangian): 
  Sainte-Croix, 
  Switzerland 
  26 
  

  

  11. 
  Ceriopora 
  nummularia, 
  new 
  species. 
  Longitudinal 
  section, 
  X 
  16, 
  

  

  exhibiting 
  the 
  moniliform 
  tubes 
  with 
  large 
  vesicles 
  and 
  the 
  zonal 
  

   lines. 
  Lower 
  Cretaceous 
  (Valangian) 
  : 
  Sainte-Croix, 
  Switzerland, 
  . 
  26 
  

  

  12. 
  Ceriopora 
  lobifera, 
  new 
  species. 
  A 
  meridian 
  section, 
  X 
  16. 
  The 
  

  

  zonal 
  lines 
  are 
  transformed 
  sometimes 
  into 
  basal 
  lamellae. 
  Lower 
  

   Cretaceous 
  (Valangian): 
  Sainte-Croix, 
  Switzerland 
  27 
  

  

  13. 
  Ceriopora 
  fallax, 
  new 
  species. 
  A 
  meridian 
  section, 
  X 
  16. 
  The 
  zonal 
  

  

  lines 
  are 
  transformed 
  into 
  basal 
  lamellae. 
  Lower 
  Cretaceous 
  

   (Valangian) 
  : 
  Sainte-Croix, 
  Switzerland 
  28 
  

  

  