﻿CYCL.OSTOMATOUS 
  BRYOZOA 
  CANU 
  AND 
  BASSLER 
  

  

  45 
  

  

  side 
  and 
  in 
  quincunx 
  on 
  the 
  other. 
  This 
  irregularity 
  provokes 
  an 
  

   equivalent 
  irregularity 
  in 
  the 
  sections. 
  Those 
  that 
  we 
  have 
  made 
  

   show 
  the 
  same 
  characters 
  as 
  in 
  the 
  preceding 
  species, 
  thus 
  leaving 
  

   no 
  doubt 
  as 
  to 
  the 
  generic 
  placing. 
  

  

  The 
  species 
  differs 
  from 
  Cardioecia 
  faringdonensis 
  in 
  its 
  smaller, 
  

   more 
  crowded 
  and 
  less 
  salient 
  peristomes. 
  

  

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

   (rare) 
  . 
  

  

  Holotype.—C&t. 
  No. 
  69898, 
  U.S.N.M. 
  

  

  Genus 
  NEMATIFERA 
  Canu 
  and 
  Bassler, 
  1922 
  

  

  The 
  ovicell 
  is 
  an 
  elongated 
  sack, 
  subsymmetrical, 
  irregular, 
  scarcely 
  

   convex; 
  the 
  oeciostome 
  is 
  terminal, 
  very 
  small, 
  hardly 
  salient. 
  All 
  

   of 
  the 
  tubes 
  are 
  bordered 
  with 
  sali- 
  

   ent 
  threads 
  exteriorily. 
  The 
  tubes 
  

   are 
  short, 
  cylindrical, 
  polygonal; 
  the 
  

   gemmation 
  is 
  triparietal 
  on 
  a 
  basal 
  

   lamella. 
  

  

  Genotype. 
  — 
  Nematifera 
  (Elea) 
  reti- 
  

   culata 
  D'Orbigny, 
  1S53. 
  Lower 
  Cre- 
  

   taceous 
  (Neocomian, 
  Urgonian). 
  

   The 
  ovicells 
  so 
  far 
  discovered 
  are 
  

   little 
  distinct 
  but 
  clearly 
  different 
  

   from 
  those 
  of 
  Trigonoecia, 
  although 
  

   the 
  structure 
  in 
  sections 
  in 
  these 
  two 
  

   genera 
  is 
  verj 
  7 
  similar. 
  The 
  tubes 
  

   are 
  bordered 
  exteriorly 
  by 
  a 
  salient 
  

   thread, 
  which 
  never 
  occurs 
  in 
  Tri- 
  

   gonoecia. 
  According 
  to 
  the 
  exterior 
  resemblances, 
  this 
  genus 
  ought 
  

   to 
  have 
  Jurassic 
  representatives. 
  

  

  NEMATIFERA 
  RETICULATA 
  D'Orbigny, 
  1853 
  

  

  Plate 
  4, 
  figs. 
  1-4 
  

  

  1853. 
  Elea 
  reticulata 
  D'Orbigny, 
  Pal6ontologie 
  francaise, 
  Terrain 
  Cretac6, 
  vol. 
  5, 
  

   p. 
  629, 
  pi. 
  782, 
  figs. 
  9-12. 
  

  

  Measurements. 
  — 
  Diameter 
  of 
  orifice, 
  0.14 
  mm.; 
  diameter 
  of 
  peri- 
  

   stomes, 
  0.24 
  mm. 
  ; 
  distance 
  of 
  peristomes, 
  0.60 
  mm. 
  ; 
  separation 
  of 
  

   peristomes, 
  0.64 
  mm. 
  

  

  Affinities. 
  — 
  This 
  species 
  is 
  not 
  at 
  all 
  a 
  member 
  of 
  the 
  Eleidae. 
  

   The 
  peristome 
  is 
  orbicular, 
  but, 
  through 
  weathering, 
  it 
  becomes 
  

   semielliptical. 
  There 
  are 
  no 
  facettes, 
  but 
  these 
  are 
  the 
  walls 
  of 
  the 
  

   tubes 
  themselves 
  that 
  are 
  very 
  short 
  because 
  of 
  the 
  close 
  approach 
  

   of 
  the 
  peristomes. 
  The 
  tubes 
  are 
  almost 
  always 
  bordered 
  with 
  a 
  

  

  Fig. 
  20.— 
  Nematifera 
  reticulata 
  D'Orbigny, 
  

   1853. 
  Longitudinal 
  and 
  transverse 
  sections, 
  

   X 
  16. 
  Lower 
  Cretaceous 
  (Valangian): 
  Sainte 
  

   Croix, 
  Switzerland 
  

  

  