﻿30 
  

  

  PROCEEDINGS 
  OF 
  THE 
  NATIONAL, 
  MUSEUM 
  

  

  to 
  us 
  impossible 
  to 
  identify 
  otherwise 
  the 
  numerous 
  specimens 
  col- 
  

   lected 
  in 
  the 
  same 
  locality, 
  Faringdon. 
  

  

  In 
  meridian 
  section 
  the 
  zoarium 
  appears 
  to 
  be 
  formed 
  by 
  complete, 
  

   superposed 
  lamellae, 
  with 
  their 
  basal 
  lamella 
  entire. 
  The 
  latter 
  is 
  

  

  quite 
  visible 
  on 
  account 
  of 
  a 
  

   short 
  zone 
  of 
  growth. 
  The 
  

   zooecial 
  walls 
  are 
  very 
  thick 
  

   and 
  formed 
  of 
  two 
  or 
  three 
  

   rows 
  of 
  small 
  vesicles, 
  which, 
  

   in 
  tangential 
  sections, 
  are 
  very 
  

   irregular. 
  

  

  Affinities. 
  — 
  In 
  the 
  micromet- 
  

   ric 
  dimensions, 
  as 
  well 
  as 
  in 
  

   sections, 
  our 
  specimens 
  are 
  

   very 
  close 
  to 
  Reptomulticava 
  

  

  Fig. 
  l5.-MeptomuUicava 
  fungiform^ 
  Gregory, 
  1909. 
  micropom 
  Roemer, 
  1839, 
  but 
  

  

  Meridian 
  section, 
  X 
  1G, 
  showing 
  superposed 
  cellular 
  they 
  differ 
  ill 
  the 
  ZOai'ial 
  form 
  

  

  lamellae, 
  and 
  the 
  thick 
  walls 
  with 
  large 
  vesicles. 
  __ 
  j 
  • 
  ,i 
  _ 
  „. 
  <• 
  ±1 
  

  

  Lower 
  Cretaceous 
  (Aptian): 
  Faringdon, 
  England 
  alld 
  ln 
  the 
  . 
  arrangement 
  of 
  the 
  

  

  apertures 
  in 
  quincunx. 
  

   Occurrence. 
  — 
  Lower 
  Cretaceous 
  (Aptian) 
  : 
  Faringdon, 
  England 
  

   (common). 
  

   Plesioty 
  pes. 
  —Cat. 
  No. 
  69873, 
  U.S.N.M. 
  

  

  REPTOMULTICAVA 
  BELLLLA 
  De 
  Loriol, 
  1869 
  

  

  Plate 
  24, 
  figs. 
  18-20 
  

  

  1869. 
  Reptomulticava 
  bellula 
  De 
  Loriol 
  and 
  Gillieron, 
  Monographie 
  paleon- 
  

   tologique 
  et 
  stratigraphique 
  de 
  l'etage 
  Urgonien 
  inferieur 
  de 
  Landeron 
  

   (Neuchatel), 
  Memo-ires 
  de 
  la 
  Societe 
  helvetique 
  des 
  Sciences 
  l)aturelles^ 
  

   vol. 
  23, 
  p. 
  41; 
  pi. 
  3, 
  figs. 
  9-11. 
  

  

  We 
  refer 
  to 
  this 
  species 
  the 
  unique 
  specimen 
  which 
  we 
  have 
  figured, 
  

   but 
  the 
  micrometric 
  dimensions 
  seem 
  to 
  us 
  a 
  great 
  deal 
  smaller, 
  and 
  

   there 
  are 
  25 
  apertures 
  to 
  the 
  square 
  millimeter 
  in 
  place 
  of 
  15, 
  as 
  

   indicated 
  by 
  Gregory. 
  

  

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

   Switzerland 
  (very 
  rare). 
  

  

  Genus 
  DEFRANCIOPORA 
  Hamm, 
  1881 
  

  

  DEFRANCIOPORA 
  NEOCOMIENSIS, 
  new 
  species 
  

  

  Plate 
  25, 
  figs. 
  13-15 
  

  

  Description. 
  — 
  The 
  zoarium 
  is 
  free, 
  claviform, 
  composed 
  apparently 
  

   of 
  many 
  discoidal 
  superposed 
  subcolonies. 
  The 
  base 
  is 
  narrower 
  

   than 
  the 
  zoarium. 
  The 
  tubes 
  are 
  little 
  thickened; 
  the 
  apertures 
  are 
  

   polygonal 
  and 
  close 
  together. 
  

  

  Measurements. 
  — 
  Diameter 
  of 
  aperture, 
  0.14 
  mm. 
  ; 
  maximum 
  zoarial 
  

   width, 
  7 
  mm.; 
  maximum 
  zoarial 
  height, 
  10 
  mm. 
  

  

  