﻿FEOM 
  BAIBNSBALE 
  (g-IPPSLAND). 
  513 
  

  

  In 
  the 
  fossil 
  there 
  is 
  on 
  each 
  side 
  of 
  the 
  nxucro 
  an 
  erect 
  spinous 
  

   process, 
  at 
  the 
  top 
  of 
  which 
  is 
  a 
  small 
  spatulate 
  avicularium. 
  In 
  a 
  

   recent 
  specimen 
  in 
  my 
  possession 
  from 
  Tasmania 
  there 
  is 
  a 
  spinous 
  

   process 
  on 
  each 
  side 
  ; 
  but 
  these 
  never 
  seem 
  to 
  be 
  avicularian. 
  

  

  In 
  the 
  fossil 
  as 
  well 
  as 
  in 
  the 
  Tasmanian 
  specimen 
  there 
  is 
  very 
  

   frequently 
  on 
  one 
  side, 
  near 
  the 
  border 
  and 
  about 
  halfway 
  down 
  

   the 
  zooecium, 
  a 
  small, 
  nearly 
  round 
  avicularium. 
  

  

  The 
  spinous 
  process, 
  which 
  in 
  some 
  cases 
  is 
  avicularian, 
  is 
  one 
  of 
  

   those 
  instances, 
  now 
  rather 
  numerous, 
  which, 
  it 
  seems 
  to 
  me, 
  must 
  

   ultimately 
  lead 
  to 
  our 
  seeing 
  that 
  the 
  function 
  of 
  the 
  avicularia 
  is 
  

   not 
  prehensile, 
  as 
  formerly 
  supposed. 
  

  

  Loc. 
  Living: 
  Curtis 
  Island 
  (#.), 
  Singapore 
  or 
  Philippine 
  Islands 
  

   (Miss 
  ./.), 
  Tasmania 
  (sent 
  me 
  by 
  Miss 
  Gatty). 
  Fossil 
  : 
  S. 
  W. 
  Victoria. 
  

  

  Smittia 
  biincisa, 
  Waters. 
  

  

  Smittia 
  biincisa, 
  Waters, 
  Q. 
  J. 
  G. 
  S. 
  vol. 
  xxxviii. 
  p. 
  272, 
  pi. 
  vii. 
  

   fig. 
  1. 
  

  

  The 
  S.W.-Yictorian 
  specimen 
  is 
  better 
  preserved 
  than 
  those 
  from 
  

   Mt. 
  Gambier, 
  and 
  shows 
  five 
  oral 
  spines. 
  

  

  Loc. 
  Mt. 
  Gambier. 
  

  

  Membkaxipora 
  radicifera, 
  Hincks. 
  

  

  Membranipora 
  radicifera, 
  Hincks, 
  Ann. 
  & 
  Mag. 
  Nat. 
  Hist. 
  s. 
  5, 
  

   vol. 
  viii. 
  p. 
  5, 
  pi. 
  ii. 
  fig. 
  6. 
  

  

  Membranipora 
  radicifera, 
  Waters, 
  Chil. 
  Bry. 
  Mt. 
  Gambier, 
  Q. 
  J. 
  

   G. 
  S. 
  vol. 
  xxxviii. 
  p. 
  262, 
  pi. 
  ix. 
  figs. 
  26, 
  27. 
  

  

  The 
  dorsal 
  surface 
  has 
  several 
  protuberances 
  to 
  each 
  zooecium 
  ; 
  

   and 
  these 
  were 
  apparently 
  perforated 
  ; 
  but 
  it 
  is 
  impossible 
  to 
  say 
  

   whether 
  there 
  were 
  radicular 
  appendages. 
  

  

  EXPLANATION 
  OF 
  PLATE 
  XXII. 
  

  

  Fig. 
  1. 
  Microporella 
  decor 
  ata, 
  Ess., 
  X 
  25. 
  

  

  2. 
  Membranipora 
  appendiculata, 
  Rss., 
  X 
  12. 
  

  

  3. 
  Ditto, 
  aviculariuui, 
  X 
  25. 
  

  

  4. 
  Ditto, 
  lateral 
  rosette-plates 
  (diagrammatic). 
  

  

  5. 
  Ditto, 
  distal 
  ditto. 
  

  

  6. 
  Cribrilina 
  terminata, 
  Waters, 
  X 
  25. 
  

  

  7. 
  Steganoporella 
  magnila.br 
  is, 
  Busk, 
  X 
  12. 
  

  

  7 
  a. 
  Ditto, 
  held 
  diagonally, 
  in 
  order 
  to 
  examine 
  the 
  tubular 
  aperture, 
  X 
  25. 
  

  

  8. 
  Cellepora 
  yarraensis, 
  Waters, 
  X 
  25. 
  

  

  9. 
  Palmicellaria 
  Skenei, 
  Ell. 
  & 
  Sol., 
  X 
  25. 
  

  

  10. 
  Lunulites 
  canccllatus, 
  Busk, 
  X 
  25. 
  

  

  11. 
  Ditto, 
  aperture, 
  X 
  50. 
  

  

  12. 
  Lepralia 
  gippslandii, 
  sp. 
  nov., 
  X 
  12. 
  

  

  DlSCDSSION. 
  

  

  Dr. 
  Mtjrte 
  said 
  that 
  the 
  Society 
  was 
  much 
  indebted 
  to 
  Mr. 
  Waters 
  

   for 
  his 
  laborious 
  work 
  on 
  a 
  difficult 
  branch 
  of 
  investigation. 
  The 
  

   methods 
  of 
  classification 
  proposed 
  by 
  him 
  had 
  now 
  been 
  adopted 
  

   by 
  several 
  authorities 
  of 
  weight. 
  

  

  