﻿PROM 
  BAIRNSDALE 
  (gIPPSLAND). 
  507 
  

  

  M. 
  minuta, 
  Ess., 
  M. 
  gracilis, 
  Miinst., 
  M. 
  papyracea, 
  Ess., 
  Eschara 
  

   biseriatopora, 
  Ess., 
  E. 
  ignobilis, 
  Ess., 
  Vincularia 
  Haidingeri, 
  Ess., 
  

   V. 
  cucullata, 
  Ess. 
  

  

  10. 
  Cribrilixa 
  termlnata, 
  Waters. 
  Plate 
  XXII. 
  fig. 
  6. 
  

  

  Cribrilina 
  terminata, 
  Waters, 
  " 
  Bry. 
  from 
  S.W. 
  Victoria," 
  Quart. 
  

   Journ. 
  Geol. 
  Soc. 
  vol. 
  xxxvii. 
  p. 
  326, 
  pi. 
  xvii. 
  fig. 
  68. 
  

  

  Zoarium 
  in 
  Eschar 
  a-foxm. 
  From 
  the 
  Bairnsdale 
  specimens 
  I 
  am 
  

   able 
  to 
  add 
  a 
  description 
  of 
  the 
  ovicell. 
  It 
  is 
  subimmersed 
  ; 
  and 
  in 
  

   the 
  middle 
  there 
  is 
  a 
  cleft 
  or 
  depression 
  commencing 
  from 
  the 
  distal 
  

   end 
  of 
  the 
  oral 
  aperture. 
  The 
  upper 
  portion 
  of 
  the 
  ovicell 
  has 
  a 
  

   second 
  wall 
  raised 
  above 
  the 
  lower 
  one 
  and 
  concealing 
  the 
  cleft, 
  

   thus 
  forming 
  a 
  cap 
  to 
  the 
  upper 
  part 
  of 
  the 
  ovicell. 
  ' 
  

  

  11. 
  Cribrilina 
  monoceros, 
  Busk 
  (non 
  Eeuss). 
  

  

  Lepralia 
  monoceros, 
  Busk, 
  Mar. 
  Polyzoa, 
  p. 
  72, 
  pi. 
  xciii. 
  figs. 
  5, 
  6. 
  

  

  Leprcdia 
  monoceros, 
  MacGillivray, 
  Zool. 
  of 
  Vict. 
  dec. 
  iv. 
  p. 
  32, 
  

   pi. 
  xxxviii. 
  figs. 
  1, 
  2. 
  

  

  Lepralia 
  monoceros, 
  Eidley, 
  "Zool. 
  Coll. 
  in 
  the 
  Straits 
  of 
  Magellan 
  " 
  

   &c, 
  Proc. 
  Zool. 
  Soc. 
  1881, 
  p. 
  50. 
  

  

  Cribrilina 
  monoceros'?, 
  Hincks, 
  "Coll. 
  of 
  Polyzoa 
  from 
  Bass's 
  

   Straits." 
  Proc. 
  Lit. 
  & 
  Phil. 
  Soc. 
  Liverpool, 
  April 
  1881, 
  p. 
  11, 
  & 
  Ann. 
  

   & 
  Mag. 
  !S 
  T 
  at. 
  Hist. 
  July 
  1881, 
  p. 
  9, 
  pi. 
  iii. 
  fig. 
  6. 
  

  

  Zoarium 
  in 
  Eschar 
  a-form. 
  The 
  shape 
  of 
  the 
  zocecium, 
  ovicells, 
  

   avicularia, 
  and 
  spinal 
  attachment 
  corresponds 
  with 
  Busk's 
  figure; 
  and 
  

   there 
  is 
  no 
  doubt 
  about 
  the 
  identity. 
  Mr. 
  Hincks, 
  however, 
  describes 
  

   a 
  suboral 
  avicularium, 
  which 
  had 
  not 
  been 
  mentioned 
  by 
  previous 
  

   authors, 
  and 
  which 
  is 
  absent 
  in 
  the 
  Bairnsdale 
  fossil 
  ; 
  and 
  therefore 
  

   Mr. 
  Hincks's 
  specimen 
  may 
  perhaps 
  be 
  looked 
  upon 
  as 
  a 
  variety. 
  In 
  

   the 
  aperture 
  there 
  are 
  two 
  projections 
  or 
  teeth 
  above, 
  and 
  two 
  below, 
  

   reminding 
  us 
  of 
  the 
  aperture 
  of 
  Cellar 
  ia 
  crassa, 
  &c. 
  I 
  have 
  already 
  

   called 
  attention 
  (Q. 
  J. 
  G. 
  S. 
  vol. 
  xxxvii. 
  p. 
  327) 
  when 
  speaking 
  of 
  

   Cribrilina 
  dentipora, 
  to 
  the 
  denticle 
  in 
  the 
  pores 
  of 
  Cribrilina 
  

   monoceros 
  in 
  the 
  British-Museum 
  specimens 
  ; 
  Mr. 
  Eidley, 
  in 
  his 
  

   paper, 
  speaks 
  of 
  a 
  small 
  tubercle 
  projecting 
  into 
  the 
  pore 
  ; 
  and 
  in 
  the 
  

   fossil 
  I 
  find 
  that 
  each 
  pore 
  has 
  a 
  prominent 
  denticle, 
  in 
  each 
  case 
  

   pointing 
  radially 
  away 
  from 
  the 
  centre 
  of 
  the 
  area. 
  

  

  12. 
  Mucronella 
  mucronata, 
  Smitt. 
  

  

  Escharipora 
  mucronata, 
  Sm. 
  Plor. 
  Bry. 
  p. 
  24, 
  pi. 
  v. 
  figs. 
  113-115. 
  

  

  Mucronella 
  mucronata, 
  "Waters, 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  

   xxxvii. 
  p. 
  328, 
  pi. 
  xvii. 
  fig. 
  66, 
  and 
  vol. 
  xxxviii. 
  p. 
  266. 
  

  

  From 
  Bairnsdale 
  it 
  is 
  in 
  the 
  Eschara-iorm, 
  evidently 
  with 
  a 
  foli- 
  

   aceous 
  growth. 
  

  

  r? 
  J 
  

  

  13. 
  Mucronella 
  nitida, 
  Verrill. 
  

  

  Discopora 
  nitida, 
  Verrill, 
  Amer. 
  Journ. 
  Sci. 
  vol. 
  ix. 
  p. 
  415, 
  

   pi. 
  vii. 
  fig. 
  3, 
  1875. 
  

  

  Mucronella 
  nitida, 
  Verrill, 
  " 
  Eecent 
  Add. 
  to 
  Mar. 
  Invert.," 
  Proc. 
  

   U.S. 
  Nat. 
  Mus. 
  p. 
  195. 
  

  

  2m2 
  

  

  