﻿ON 
  FOSSIL 
  CHILOSTOMATOUS 
  BRYOZOA 
  FEOM 
  MOUNT 
  GAMBIER. 
  257 
  

  

  27. 
  On 
  Fossil 
  Chilostomatous 
  Bryozoa 
  from 
  Mount 
  Gambler, 
  South 
  

   Australia. 
  By 
  Arthur 
  Wm. 
  Waters, 
  Esq., 
  F.G.S. 
  (Read 
  

   January 
  25, 
  1882.) 
  

  

  [Plates 
  VIL-IX.] 
  

  

  The 
  fossils 
  which 
  have 
  been 
  at 
  my 
  disposal 
  for 
  the 
  present 
  commu- 
  

   nication 
  consist, 
  first, 
  of 
  a 
  pill-box 
  full 
  of 
  Bryozoa, 
  in 
  the 
  possession 
  

   of 
  the 
  London 
  Geological 
  Society, 
  which 
  they 
  kindly 
  lent 
  me 
  for 
  

   description 
  ; 
  and, 
  secondly, 
  the 
  collection 
  made 
  on 
  the 
  spot 
  by 
  Mr. 
  

   Etheridge, 
  Jun., 
  who 
  very 
  obligingly 
  lent 
  it 
  to 
  me 
  when 
  I 
  was 
  pre- 
  

   paring 
  my 
  paper 
  on 
  South-west 
  Victorian 
  Chilostomatous 
  Bryozoa*. 
  

   The 
  material 
  belonging 
  to 
  the 
  London 
  Geological 
  Society 
  was 
  sent 
  

   over 
  by 
  Mr. 
  J. 
  E. 
  Tenison 
  Woods, 
  probably 
  at 
  the 
  time 
  he 
  wrote 
  his 
  

   paper 
  for 
  the 
  Geological 
  Society 
  " 
  On 
  some 
  Tertiary 
  Rocks 
  in 
  the 
  

   Colony 
  of 
  South 
  Australia," 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  xvi. 
  1860. 
  

  

  I 
  have 
  referred 
  to 
  many 
  of 
  the 
  specimens 
  from 
  Mount 
  Gambier 
  

   in 
  my 
  paper 
  just 
  mentioned, 
  and 
  in 
  the 
  course 
  of 
  a 
  few 
  weeks 
  hope 
  

   to 
  have 
  a 
  short 
  communication 
  ready 
  on 
  the 
  Chilostomatous 
  Bryozoa 
  

   from 
  Bairnsdale, 
  Gippsland, 
  Victoria, 
  as 
  I 
  have 
  at 
  present 
  in 
  my 
  

   hands 
  for 
  description 
  Mr. 
  J. 
  R. 
  Y. 
  Goldstein's 
  collection 
  from 
  that 
  

   locality. 
  On 
  the 
  completion 
  of 
  this 
  series 
  of 
  papers 
  on 
  the 
  Chilo- 
  

   stomatous 
  Bryozoa 
  from 
  the 
  three 
  localities, 
  I 
  propose 
  to 
  deal 
  with 
  

   the 
  Cyclostomata 
  from 
  the 
  three 
  places 
  in 
  one 
  paper, 
  as 
  the 
  number 
  

   of 
  species 
  of 
  Cyclostomata 
  is 
  not 
  very 
  large. 
  This 
  series 
  will 
  refer 
  

   to 
  about 
  two 
  hundred 
  species 
  of 
  Tertiary 
  Bryozoa 
  ; 
  and 
  although 
  those 
  

   on 
  the 
  spot 
  able 
  to 
  obtain 
  large 
  collections 
  will 
  no 
  doubt 
  find 
  various 
  

   points 
  which 
  I 
  have 
  only 
  imperfectly 
  appreciated, 
  yet 
  I 
  hope 
  that 
  

   these 
  contributions 
  will 
  make 
  the 
  study 
  of 
  these 
  rich 
  Bryozoa-beds 
  

   easier 
  for 
  those 
  who 
  follow 
  me 
  ; 
  and 
  the 
  large 
  number 
  of 
  species 
  

   found 
  in 
  these 
  two 
  pill-boxes 
  will 
  give 
  an 
  idea 
  of 
  what 
  a 
  vast 
  field 
  

   yet 
  remains 
  unworked 
  in 
  Australian 
  fossil 
  Bryozoa. 
  

  

  The 
  genus 
  Membranipora, 
  which 
  was 
  largely 
  represented 
  in 
  the 
  

   Cretaceous 
  period 
  in 
  various 
  modes 
  of 
  growth, 
  will 
  have 
  to 
  be 
  

   divided; 
  but 
  for 
  the 
  present 
  it 
  will 
  be 
  best 
  to 
  wait 
  until 
  the 
  

   group 
  has 
  been 
  entirely 
  worked 
  up, 
  both 
  in 
  the 
  recent 
  forms 
  from 
  

   the 
  southern 
  hemisphere 
  and 
  the 
  fossils 
  from 
  various 
  localities. 
  

  

  In 
  giving 
  the 
  measurements 
  of 
  the 
  aperture 
  of 
  fossils 
  it 
  will 
  of 
  

   course 
  be 
  understood 
  that 
  these 
  cannot 
  be 
  made 
  with 
  the 
  same 
  

   exactitude 
  as 
  when 
  we 
  have 
  to 
  deal 
  with 
  recent 
  species. 
  

  

  The 
  number 
  of 
  species 
  from 
  Mount 
  Gambier 
  is 
  66 
  Chilostomata 
  and 
  

   a 
  moderate 
  number 
  of 
  Cyclostomata; 
  and 
  of 
  these 
  66 
  Chilostomata 
  

  

  * 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  xxxvii. 
  p. 
  309. 
  I 
  then 
  stated 
  my 
  reasons 
  for 
  

   believing 
  that 
  the 
  fossils 
  were 
  incorrectly 
  labelled 
  from 
  Yarra-Yarra; 
  and 
  a 
  

   friend 
  writes 
  to 
  say 
  that 
  Mr. 
  Watts 
  is 
  still 
  alive 
  and 
  has 
  told 
  him 
  that 
  the 
  

   material 
  was 
  given 
  him 
  by 
  Mr. 
  John 
  Allen, 
  who 
  obtained 
  it 
  from 
  Curdies 
  

   Creek, 
  about 
  30 
  miles 
  east 
  of 
  Warrnamboul, 
  and 
  that 
  no 
  Tertiary 
  beds 
  are 
  

   known 
  on 
  the 
  Yarra-Yarra. 
  This 
  entirely 
  confirms 
  the 
  ideas 
  I 
  expressed 
  as 
  

   to 
  the 
  probable 
  origin 
  of 
  the 
  material. 
  

  

  