﻿CYCLOSTOMATOUS 
  BRYOZOA 
  CANU 
  AND 
  BASSLER 
  

  

  25 
  

  

  thickened 
  and 
  are 
  moniliform. 
  The 
  zonal 
  lines 
  are 
  irregular 
  and 
  

   may 
  be 
  transformed 
  partially 
  into 
  basal 
  lamellae. 
  

  

  Affinities. 
  — 
  In 
  its 
  zoarial 
  form 
  this 
  species 
  approaches 
  Ceriopora 
  

   aequipedis 
  but 
  differs 
  in 
  its 
  large 
  zoarium, 
  its 
  much 
  larger 
  aperture 
  

   (0.16 
  mm. 
  and 
  not 
  0.12 
  mm.), 
  and, 
  in 
  sections, 
  in 
  the 
  irregularity 
  of 
  

   the 
  zonal 
  lines. 
  

  

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

   Switzerland 
  (rare). 
  

  

  Cotypes.— 
  Cat. 
  No. 
  69S66, 
  U.S.N.M. 
  

  

  Fig. 
  9.— 
  Ceriopora 
  solida, 
  new 
  species. 
  Meridian 
  section, 
  X 
  16. 
  Lower 
  Cretaceous 
  (Valangian): 
  Sainte- 
  

   Croix, 
  Switzerland 
  

  

  CERIOPORA 
  PARVIPORA, 
  new 
  species 
  

  

  Plate 
  23, 
  figs. 
  5-7 
  

  

  Description. 
  — 
  The 
  zoarium 
  is 
  large, 
  globular, 
  with 
  a 
  concave, 
  nar- 
  

   rowed 
  base. 
  There 
  are 
  false 
  enveloping 
  lamellae. 
  The 
  tubes 
  are 
  

   thick; 
  the 
  apertures 
  are 
  polygonal 
  and 
  irregular. 
  

  

  Measurements. 
  — 
  Diameter 
  of 
  aperture, 
  0.08 
  mm.; 
  diameter 
  of 
  

   zoarium, 
  7 
  mm. 
  

  

  