﻿AM. 
  21 
  CYCLOSTOMATOUS 
  BRYOZOA 
  CANU 
  AND 
  BASSLER 
  9 
  

  

  stomes 
  are 
  quite 
  variable. 
  The 
  submedian 
  contraction 
  of 
  the 
  fronds 
  

   very 
  well 
  characterizes 
  this 
  species. 
  

  

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

  

  Holotype.—C&t. 
  No. 
  69000, 
  U.S.N.M. 
  

  

  Forma 
  BERENICEA 
  Lamouroux, 
  1821 
  

  

  BERENICEA 
  FLABELLIFORMIS 
  Roomer, 
  1839 
  

  

  1839. 
  Aulo-pora 
  flabelliformis 
  Roemer, 
  Die 
  Versteinerungen 
  des 
  Norddeutschen 
  

  

  Oolithen-Gebirges, 
  App., 
  p. 
  15, 
  pi. 
  17, 
  fig. 
  4. 
  

  

  1840. 
  Rosacilla 
  flabelliformis 
  Roemek, 
  Die 
  Versteinerungen 
  der 
  Norddeutschen 
  

  

  Kreidegebirges, 
  p. 
  19. 
  

   1863. 
  Berenicea 
  flabelliformis 
  De 
  Loriol, 
  Les 
  Invert6bres 
  du 
  Neocomian 
  inferieur 
  

   du 
  Mont 
  Saleve 
  pres 
  Geneve, 
  p. 
  134, 
  pi. 
  17, 
  fig. 
  2. 
  

  

  Measurements. 
  — 
  Diameter 
  of 
  orifice, 
  0.10 
  mm.; 
  diameter 
  of 
  tubes, 
  

   0.18-0.20 
  mm. 
  ; 
  distance 
  of 
  peristomes, 
  0.60 
  mm.; 
  separation 
  of 
  tubes, 
  

   0.60 
  mm. 
  

  

  Affinities. 
  — 
  De 
  Loriol's 
  determination 
  was 
  based 
  upon 
  specimens 
  

   from 
  Germany 
  which 
  still 
  exist 
  in 
  the 
  Museum 
  of 
  Geneva. 
  The 
  

   type 
  of 
  De 
  Loriol's 
  figure 
  bears 
  transverse 
  wrinkles. 
  In 
  its 
  micro- 
  

   metric 
  dimensions 
  this 
  is 
  an 
  intermediate 
  species 
  between 
  Berenicea 
  

   gracilis 
  Milne-Edwards, 
  1838, 
  and 
  Berenicea 
  grandipora, 
  new 
  species. 
  

  

  Occurrence. 
  — 
  Lower 
  Cretaceous 
  (Neocomian) 
  : 
  Mont-Saleve, 
  near 
  

   Geneva 
  and 
  at 
  Sainte-Croix 
  (Vaud), 
  Switzerland. 
  

  

  Geological 
  distribution. 
  — 
  Neocomian 
  at 
  Shoppenstadt, 
  Hanover, 
  

   Germany 
  (Roemer). 
  

  

  Cat. 
  No. 
  6983S, 
  U.S.N.M. 
  

  

  BERENICEA 
  GRACILIS 
  Milne-Edwards, 
  1838 
  

  

  1899. 
  Berenicea 
  gracilis 
  Gregory, 
  Catalogue 
  of 
  the 
  Cretaceous 
  Bryozoa 
  in 
  the 
  

   British 
  Museum, 
  p. 
  73. 
  (Bibliography 
  and 
  geological 
  distribution.) 
  

  

  Measurements. 
  — 
  Diameter 
  of 
  orifice, 
  0.06-0.07 
  mm.; 
  diameter 
  of 
  

   tubes, 
  0.18 
  mm.; 
  distance 
  of 
  orifices, 
  0.50-0.60 
  mm. 
  

  

  Affinities. 
  — 
  From 
  the 
  bibliography 
  given 
  by 
  Gregory 
  it 
  is 
  necessary 
  

   to 
  eliminate 
  Aulopora 
  flabelliformis 
  Roemer, 
  1839, 
  which 
  is 
  a 
  much 
  

   larger 
  species. 
  

  

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

   Switzerland. 
  

  

  Cat. 
  No. 
  69839, 
  U.S.N.M. 
  

  

  BERENICEA 
  CONFLUENS 
  Reuss, 
  1846 
  

  

  Plate 
  27, 
  fig. 
  4 
  

  

  1899. 
  Berenicea 
  confluens 
  Gregory, 
  Catalogue 
  of 
  the 
  Cretaceous 
  Bryozoa 
  in 
  the 
  

   British 
  Museum, 
  vol. 
  1, 
  p. 
  110, 
  pi. 
  5, 
  fig. 
  4. 
  (Bibliography 
  and 
  geolog- 
  

   ical 
  distribution.) 
  

  

  Affinities. 
  — 
  Our 
  illustrated 
  specimen 
  resembles 
  the 
  one 
  figured 
  by 
  

   Gregory 
  as 
  a 
  young 
  zoarium 
  which 
  was 
  obtained 
  from 
  the 
  Albian 
  at 
  

   Cambridge, 
  England. 
  The 
  dimensions 
  of 
  the 
  orifice, 
  0.10 
  mm., 
  is 
  in 
  

  

  