﻿60 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  et 
  

  

  RADIOFASCIGERA 
  RAMOSA 
  D'Orbigny, 
  1853 
  

  

  Plate 
  6, 
  fig. 
  10 
  

  

  1853. 
  Radiofascigera 
  ramosa 
  D'Orbigny, 
  Paleontologie 
  francaisc, 
  Terrain 
  Cr6- 
  

   tace\ 
  vol. 
  5, 
  p. 
  682, 
  pi. 
  783, 
  figs. 
  17-19. 
  

  

  The 
  ovicell 
  is 
  a 
  small 
  capsule 
  with 
  limited 
  outlines, 
  absolutely- 
  

   analogous 
  in 
  form 
  and 
  position 
  with 
  that 
  of 
  Actinopora 
  and 
  Multi- 
  

   tubigera. 
  It 
  belongs, 
  therefore, 
  in 
  the 
  group 
  Cytisidae 
  but 
  the 
  

   dimensions 
  are 
  smaller. 
  The 
  oeciostome, 
  rarely 
  visible, 
  seems 
  to 
  be 
  

   a 
  very 
  minute 
  perforation 
  more 
  or 
  less 
  terminal. 
  

  

  According 
  to 
  D'Orbigny, 
  the 
  zoarium 
  is 
  formed 
  of 
  subcolonies 
  of 
  

   Actinopora 
  grouped 
  in 
  cylindrical 
  branches. 
  In 
  reality 
  the 
  colonies 
  

   are 
  more 
  often 
  claviform 
  and 
  never 
  branched. 
  The 
  subcolonies 
  are 
  

   rarely 
  orbicular, 
  but 
  are 
  generally 
  incomplete 
  and 
  flabelliform 
  

   (Pavotubigera) 
  . 
  

  

  In 
  transverse 
  sections 
  the 
  tubes 
  are 
  polygonal, 
  with 
  adjacent 
  

   walls. 
  In 
  longitudinal 
  sections 
  the 
  tubes 
  are 
  cylindrical, 
  with 
  dor- 
  

   sal 
  gemmation. 
  It 
  is 
  difficult 
  to 
  decipher 
  the 
  subcolonies 
  exteriorily 
  

   visible. 
  

  

  D'Orbigny's 
  figures 
  are 
  clearly 
  diagrammatic. 
  The 
  zoaria 
  are 
  

   very 
  irregular 
  and 
  become 
  almost 
  massive 
  when 
  they 
  become 
  greatly 
  

   enlarged 
  at 
  their 
  extremity. 
  The 
  multiserial 
  fascicles 
  are 
  a 
  great 
  

   deal 
  shorter 
  than 
  in 
  Actinopora 
  stellata 
  Koch 
  and 
  Dunker, 
  1847, 
  and 
  

   Multitubigera 
  campicheana 
  D'Orbigny, 
  1853. 
  For 
  these 
  various 
  rea- 
  

   sons 
  we 
  believe 
  that 
  the 
  genus 
  Radiofascigera 
  D'Orbigny, 
  1853, 
  can 
  

   be 
  maintained 
  at 
  least 
  provisionally. 
  

  

  Occurrence. 
  — 
  Lower 
  Cretaceous 
  (Valangian) 
  : 
  Sainte-Croix 
  (Vaud), 
  

   Switzerland. 
  

  

  Plesiotypes.— 
  Cat. 
  No. 
  69908, 
  U.S.N.M. 
  

  

  Genus 
  MULTIFASCIGERA 
  D'Orbigny, 
  1853 
  

  

  1853. 
  Multifascigera 
  D'Orbigny, 
  Paleontologie 
  francaise, 
  Terrain 
  Cretace, 
  vol. 
  

   5, 
  p. 
  687. 
  

  

  Theonoidae 
  composed 
  of 
  superposed 
  lamellae, 
  each 
  formed 
  of 
  sub- 
  

   colonies 
  in 
  the 
  Actinopora 
  and 
  Lopholepis 
  growth 
  stages. 
  

  

  Genotype. 
  — 
  Multifascigera 
  campicheana 
  D'Orbigny, 
  1853. 
  Cre- 
  

   taceous. 
  

  

  MULTIFASCIGERA 
  CAMPICHEANA 
  D'Orbigny, 
  1853 
  

  

  Plate 
  6, 
  fig. 
  9 
  

  

  1853. 
  Multifascigera 
  campicheana 
  D'Orbigny, 
  Paleontologie 
  francaise, 
  Terrain 
  

   Cr6tace\ 
  vol. 
  5, 
  p. 
  688, 
  pi. 
  762, 
  figs. 
  7. 
  9. 
  

  

  This 
  species 
  is 
  very 
  remarkable 
  in 
  its 
  structure 
  and 
  the 
  size 
  that 
  

   it 
  attains 
  — 
  6 
  centimeters 
  in 
  diameter. 
  The 
  zoarium 
  is 
  formed 
  of 
  

  

  