﻿E. 
  F. 
  TOMES 
  ON 
  LOWEE-OOUTE 
  MADEEPOEAEIl. 
  449 
  

  

  to 
  the 
  famed 
  sections 
  of 
  the 
  Inferior 
  Oolite 
  near 
  Cheltenham, 
  and 
  to 
  

   Mr. 
  W. 
  C. 
  Lucy, 
  who 
  has 
  favoured 
  me 
  with 
  some 
  beautiful 
  specimens 
  

   from 
  the 
  Horse 
  Pools 
  near 
  his 
  residence, 
  I 
  am 
  especially 
  indebted, 
  

   as 
  also 
  to 
  Dr. 
  Wright 
  for 
  the 
  opportunity 
  of 
  inspecting 
  the 
  species 
  

   which 
  had 
  received 
  their 
  names 
  from 
  the 
  great 
  zoophytologists 
  MM. 
  

   Edwards 
  and 
  Haime, 
  and 
  to 
  Dr. 
  Holl 
  for 
  his 
  kindness 
  in 
  affording 
  

   me 
  the 
  opportunity 
  of 
  examining 
  specimens 
  which 
  had 
  been 
  described 
  

   and 
  figured 
  by 
  Prof. 
  Duncan. 
  Without 
  such 
  assistance 
  this 
  paper 
  

   would 
  have 
  been 
  much 
  less 
  complete. 
  

  

  EXPLANATION 
  OF 
  PLATE 
  XVIII. 
  

  

  Fig. 
  1. 
  Chorisastraa 
  gregaria, 
  the 
  peduncle 
  of 
  a 
  specimen 
  before 
  gemmation 
  

   has 
  taken 
  place, 
  natural 
  size. 
  

  

  2. 
  , 
  a 
  specimen 
  a 
  little 
  further 
  advanced 
  in 
  growth, 
  and 
  showing 
  

  

  the 
  elongated 
  septa 
  (costse 
  ?) 
  and 
  the 
  intervening 
  loops. 
  

  

  3. 
  , 
  an 
  example 
  in 
  which 
  gemmation 
  has 
  taken 
  place 
  in 
  the 
  

  

  elongated 
  septa 
  (costse?), 
  the 
  parent 
  calice 
  not 
  having 
  been 
  interfered 
  

   with. 
  

  

  4. 
  Cyathophyttia 
  oolitica, 
  natural 
  size. 
  

  

  5, 
  6. 
  Phyllogyra 
  sinuosa, 
  the 
  corallum 
  of 
  a 
  small 
  example, 
  natural 
  size. 
  

  

  7. 
  , 
  a 
  portion 
  of 
  the 
  calicular 
  surface, 
  magnified, 
  showing 
  the 
  

  

  manner 
  in 
  which 
  gemmation 
  takes 
  place. 
  

   8. 
  Phylloseris 
  rugosa, 
  a 
  portion 
  of 
  a 
  frond, 
  showing 
  the 
  lines 
  and 
  bands 
  of 
  

  

  calices 
  separated 
  by 
  wavy 
  ridges 
  of 
  epitheca, 
  and 
  showing 
  a 
  young 
  

  

  frond 
  with 
  gemmation 
  taking 
  place 
  along 
  its 
  upper 
  edge, 
  arising 
  

  

  from 
  it. 
  

   9. 
  , 
  a 
  specimen 
  showing 
  the 
  outer 
  or 
  epithecal 
  surface, 
  which 
  has 
  

  

  been 
  completely 
  covered 
  by 
  the 
  epitheca 
  and 
  all 
  trace 
  of 
  the 
  calices 
  

  

  obliterated. 
  

   10. 
  , 
  a 
  few 
  calices 
  magnified. 
  

  

  11. 
  Confmastrcea 
  tenuistriata, 
  natural 
  size. 
  

  

  12. 
  Tkecoseris 
  polymorpka, 
  natural 
  size. 
  

  

  13. 
  , 
  some 
  of 
  the 
  septa, 
  showing 
  the 
  manner 
  in 
  which 
  they 
  

  

  anastomose. 
  

  

  14. 
  ThamnastrcBa 
  Wrighti, 
  a 
  few 
  calices, 
  magnified. 
  

  

  15. 
  Latimceandra 
  Hairaei, 
  some 
  calices, 
  magnified. 
  

  

  16. 
  Oroseris 
  incrustans, 
  a 
  portion 
  of 
  a 
  corallum 
  which 
  is 
  attached 
  to 
  a 
  

  

  species 
  of 
  Latimceandra, 
  natural 
  size. 
  

  

  17. 
  contorta, 
  the 
  corallum, 
  natural 
  size. 
  

  

  18. 
  Goniocora 
  concinna, 
  a 
  portion 
  of 
  a 
  corallum, 
  natural 
  size. 
  

   19. 
  , 
  the 
  calice, 
  magnified. 
  

  

  Discussion. 
  

  

  Dr. 
  Duncan 
  objected 
  to 
  the 
  use 
  of 
  the 
  term 
  " 
  reef," 
  as 
  the 
  corals 
  

   described 
  from 
  the 
  Inferior 
  Oolite 
  grew 
  on 
  banks, 
  and 
  not 
  on 
  

   fringing 
  or 
  other 
  reefs. 
  He 
  was 
  satisfied 
  that 
  Thecosmilia 
  gregaria 
  

   and 
  its 
  varieties 
  were 
  found 
  in 
  the 
  lowest 
  and 
  upper 
  banks 
  ; 
  and 
  he 
  

   did 
  not 
  concur 
  with 
  the 
  author 
  in 
  placing 
  this 
  well-defined 
  form 
  

   under 
  another 
  genus. 
  Eeuss 
  had 
  shown 
  the 
  variability 
  of 
  the 
  

   genus 
  ; 
  and 
  he 
  himself 
  noticed 
  a 
  specimen 
  amongst 
  those 
  brought 
  

   by 
  Mr. 
  Tomes 
  in 
  which 
  there 
  was 
  budding 
  high 
  up, 
  and 
  a 
  ten- 
  

   dency 
  to 
  flssiparity. 
  He 
  objected 
  to 
  the 
  statement 
  that 
  Axosmilia, 
  

   Montlivaltia 
  ffolli, 
  and 
  Donacosmilia 
  were 
  identical, 
  as 
  the 
  first 
  had 
  a 
  

  

  