﻿266 
  A. 
  W. 
  WATEKS 
  ON 
  FOSSIL 
  CHILOSTOMATOTTS 
  BRYOZOA 
  

  

  Polyz. 
  p. 
  370, 
  pi. 
  xxxviii. 
  figs. 
  3, 
  4) 
  ; 
  but 
  as 
  the 
  oral 
  aperture 
  is 
  ob- 
  

   scured 
  by 
  the 
  peristome, 
  and 
  there 
  are 
  no 
  ovicells, 
  I 
  hesitate 
  to 
  call 
  

   it 
  microstoma. 
  

  

  27. 
  MUCRONELLA 
  COCCINEA, 
  Johnst. 
  

  

  Lepralia 
  resupinata, 
  Manzoni, 
  I 
  Briozoi 
  del 
  plioc. 
  ant. 
  di 
  Castro- 
  

   caro, 
  p. 
  20, 
  pi. 
  ii. 
  fig. 
  26 
  ; 
  Waters, 
  " 
  Bry. 
  from 
  the 
  Plioc. 
  of 
  Bruc- 
  

   coli," 
  p. 
  474, 
  fig. 
  7, 
  Trans. 
  Manch. 
  Geol. 
  Soc. 
  vol. 
  xiv. 
  1878. 
  

  

  In 
  the 
  specimen 
  from 
  Mt. 
  Gambier 
  the 
  peristome 
  is 
  much 
  raised, 
  

   and 
  the 
  avicularia 
  are 
  placed 
  much 
  lower 
  than 
  is 
  usual 
  in 
  recent 
  

   specimens 
  ; 
  and 
  in 
  this 
  respect 
  it 
  resembles 
  the 
  figure 
  given 
  by 
  Ueuss 
  

   (Die 
  Bry. 
  des 
  ost-ung. 
  Mioc. 
  pi. 
  vi. 
  fig. 
  11). 
  Perhaps 
  the 
  position 
  

   of 
  the 
  avicularia 
  entitle 
  this 
  and 
  the 
  fossil 
  from 
  Eisenstadt 
  to 
  rank 
  

   as 
  a 
  variety. 
  

  

  I 
  have 
  Mucronella 
  coccinea 
  from 
  Capri 
  with 
  the 
  avicularia 
  placed 
  

   very 
  low, 
  as 
  also 
  fossil 
  from 
  the 
  Pliocene 
  of 
  Sicily 
  ; 
  and 
  it 
  is 
  then 
  

   easy 
  to 
  see 
  that 
  the 
  worn 
  specimens 
  resemble 
  Lepralia 
  resupinata, 
  

   Manz. 
  

  

  Loc. 
  Living 
  : 
  European 
  and 
  Arctic 
  seas. 
  Eossil 
  : 
  Eocene, 
  

   Miocene, 
  and 
  Pliocene 
  of 
  Europe. 
  

  

  28. 
  Mucronella 
  mtjcronata, 
  Smitt. 
  

  

  Mucronella 
  mucronata, 
  Waters, 
  loc. 
  cit. 
  p. 
  328, 
  pi. 
  xvii. 
  fig. 
  66. 
  

  

  The 
  specimen 
  from 
  Mt. 
  Gambier 
  is 
  in 
  the 
  Eschara 
  form. 
  The 
  

   mucro 
  is 
  small, 
  and 
  only 
  to 
  be 
  seen 
  on 
  some 
  zooecia 
  ; 
  but 
  in 
  the 
  

   Bairnsdale 
  specimen 
  it 
  more 
  resembles 
  the 
  figures 
  of 
  the 
  Eloridan 
  

   form 
  ; 
  and, 
  further, 
  in 
  the 
  Bairnsdale 
  specimens 
  some 
  of 
  the 
  avicu- 
  

   laria 
  are 
  very 
  large 
  and 
  are 
  directed 
  downwards, 
  while 
  a 
  few 
  point 
  

   upwards. 
  Smitt 
  gives 
  the 
  avicularia 
  pointing 
  directly 
  or 
  diagonally 
  

   upwards. 
  There 
  are 
  also 
  frequently 
  two 
  small 
  openings, 
  probably 
  

   avicularian, 
  just 
  above 
  the 
  aperture, 
  when 
  the 
  fossil 
  much 
  resembles 
  

   Reptescharipora 
  rustica, 
  d'Orb. 
  (Pal. 
  Erang. 
  pi. 
  720. 
  figs. 
  9, 
  10), 
  

   from 
  the 
  Erench 
  Senonian. 
  

  

  Loc. 
  Living 
  : 
  Elorida. 
  Eossil 
  : 
  S.W. 
  Victoria 
  and 
  Bairnsdale 
  

   (Goldst. 
  coll.). 
  

  

  29. 
  Mucronella 
  duplicata, 
  Waters 
  (in 
  Vincularim 
  forma). 
  

   Mucronella 
  duplicata, 
  Waters, 
  loc. 
  cit. 
  p. 
  328, 
  pi. 
  xvi. 
  fig. 
  54. 
  

  

  In 
  the 
  specimen 
  from 
  Mt. 
  Gambier 
  the 
  peristome 
  is 
  much 
  larger 
  

   and 
  more 
  raised 
  than 
  in 
  my 
  figure 
  from 
  South-west 
  Victoria. 
  The 
  

   mandible 
  of 
  the 
  avicularia 
  has 
  been 
  broad, 
  spatulate, 
  directed 
  inwards. 
  

  

  30. 
  Microporella 
  ciliata, 
  Pall. 
  

  

  The 
  avicularia 
  are 
  large 
  and 
  are 
  placed 
  high, 
  so 
  that 
  the 
  zocecia 
  

   in 
  consequence 
  are 
  very 
  broad. 
  Oral 
  aperture 
  0*13 
  millim. 
  wide. 
  

  

  Loc. 
  Living 
  : 
  Arctic 
  seas, 
  Britain, 
  Mediterranean, 
  Florida, 
  New 
  

   Zealand, 
  Ealkland 
  Islands, 
  Zanzibar, 
  Aden, 
  Arabian 
  Sea, 
  California, 
  

   Port 
  Eairy, 
  and 
  Warrnambool 
  (Australia, 
  McG.). 
  Eossil 
  : 
  Pliocene, 
  

   Crag, 
  several 
  localities 
  in 
  Italy, 
  Calabria, 
  and 
  Sicily. 
  

  

  