﻿42 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL. 
  MUSEUM 
  vol.67 
  

  

  The 
  gemmation 
  is 
  triparietal 
  on 
  a 
  basal 
  lamella 
  ( 
  = 
  median). 
  The 
  

   walls 
  are 
  thick 
  and 
  vesicular. 
  

  

  In 
  transverse 
  section 
  the 
  tubes 
  are 
  orbicular 
  or 
  elliptical, 
  largest 
  at 
  

   the 
  periphery, 
  with 
  very 
  thick 
  walls. 
  The 
  median 
  (basal) 
  lamella 
  is 
  

   almost 
  rectilinear. 
  

  

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

   Switzerland 
  (common). 
  

  

  Plesioty 
  pes. 
  —Cat. 
  No. 
  69888, 
  U.S.N.M. 
  

  

  CARDIOECIA 
  NEOCOMIENSIS 
  PARVULA. 
  new 
  variety 
  

  

  Plate 
  2, 
  fig. 
  8 
  

  

  The 
  micrometric 
  measurements 
  are 
  somewhat 
  smaller 
  and 
  the 
  ovi- 
  

   cell 
  less 
  regular 
  than 
  in 
  the 
  typical 
  form. 
  The 
  tubes 
  are 
  visible. 
  

  

  Measurements. 
  — 
  Diameter 
  of 
  orifice, 
  0.08 
  mm.; 
  diameter 
  of 
  peri- 
  

   stome, 
  0.14 
  mm.; 
  distance 
  of 
  peristomes, 
  0.64 
  mm.; 
  separation 
  of 
  

   peristomes, 
  0.50 
  mm. 
  

  

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

   Switzerland 
  (rare). 
  

  

  Holotype 
  — 
  Cat. 
  No. 
  69890, 
  U.S.N.M. 
  

  

  CARDIOECIA 
  NEOCOMIENSIS 
  ENTALOPHOROIDES, 
  new 
  variety 
  

  

  Plate 
  2, 
  figs. 
  9, 
  10 
  

  

  The 
  zoarium 
  is 
  cylindrical 
  or 
  somewhat 
  compressed. 
  The 
  peri- 
  

   stomes 
  are 
  arranged 
  in 
  verticells. 
  The 
  ovicell 
  is 
  more 
  globular 
  and 
  

   less 
  transverse. 
  

  

  Measurements. 
  — 
  Diameter 
  of 
  aperture, 
  0.12 
  mm.; 
  diameter 
  of 
  peri- 
  

   stome, 
  0.16 
  mm.; 
  separation 
  of 
  peristomes, 
  0.56 
  mm.; 
  distance 
  of 
  peri- 
  

   stomes 
  0.34 
  mm. 
  

  

  The 
  separation 
  can 
  be 
  measured 
  only 
  in 
  the 
  portions 
  of 
  the 
  sur- 
  

   face 
  where 
  the 
  peristomes 
  are 
  arranged 
  in 
  quincunx. 
  The 
  ovicell 
  

   appears 
  less 
  cordiform 
  and 
  more 
  globular 
  because 
  the 
  zoarium 
  is 
  sub- 
  

   cylindrical. 
  This 
  is 
  not 
  Entalophora 
  neocomiensis 
  D'Orbigny, 
  1853 
  

   in 
  which 
  the 
  tubes 
  are 
  visable 
  and 
  more 
  distant. 
  

  

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

   Switzerland. 
  

  

  Cotype.— 
  Cat. 
  No. 
  69889, 
  U.S.N.M. 
  

  

  CARDIOECIA 
  VERTICELLATA, 
  new 
  species 
  

  

  Plate 
  3, 
  figs. 
  1-4 
  

  

  Description. 
  — 
  The 
  zoarium 
  is 
  cylindrical, 
  arborescent. 
  The 
  tubes 
  

   are 
  very 
  short, 
  flat, 
  indistinct 
  or 
  separated 
  by 
  a 
  salient 
  thread; 
  the 
  

   peristomes 
  are 
  thick, 
  salient, 
  orbicular, 
  generally 
  arranged 
  in 
  close 
  

   verticells. 
  The 
  zone 
  of 
  growth 
  is 
  a 
  broad 
  cone. 
  The 
  ovicell 
  is 
  tri- 
  

   angular, 
  elongated, 
  very 
  convex, 
  smooth; 
  the 
  oeciostome 
  is 
  small 
  

   salient, 
  orbicular. 
  

  

  