﻿420 
  B. 
  E. 
  TOMES 
  ON 
  LOWEE-OOLITE 
  MADBEPOBABIA. 
  

  

  Ravensgate 
  Hill, 
  but 
  is 
  rare 
  at 
  those 
  places. 
  I 
  have 
  also 
  obtained 
  

   one 
  from 
  the 
  Pema-bed 
  at 
  Cold 
  Comfort, 
  and 
  another 
  from 
  the 
  

   Trigonia-gnt 
  between 
  Bourton-on-the- 
  Water 
  and 
  Notgrove 
  station, 
  

   on 
  the 
  Banbury 
  and 
  Cheltenham 
  railway. 
  In 
  these 
  two 
  examples 
  

   the 
  septa, 
  while 
  retaining 
  their 
  thickness 
  as 
  they 
  pass 
  inwards, 
  do 
  

   not 
  actually 
  become 
  thicker 
  in 
  that 
  direction. 
  

  

  Montlivaltia 
  Smithi, 
  Edw. 
  and 
  Haime. 
  

  

  Only 
  three 
  instances 
  of 
  the 
  occurrence 
  of 
  this 
  coral 
  have 
  come 
  to 
  

   my 
  knowledge. 
  They 
  were 
  all 
  found 
  in 
  the 
  Trigonia-gnt, 
  one 
  at 
  

   Ravensgate 
  Hill, 
  one 
  at 
  Leckhampton 
  Hill, 
  and 
  the 
  other 
  at 
  Brown's 
  

   Hill 
  near 
  Seven 
  Springs. 
  

  

  It 
  is 
  a 
  Great 
  Oolite 
  species, 
  and 
  probably 
  its 
  earliest 
  appearance 
  is 
  

   in 
  this, 
  one 
  of 
  the 
  higher 
  beds 
  of 
  the 
  Inferior 
  Oolite. 
  

  

  Montlivaltia 
  lens, 
  Edw. 
  and 
  Haime, 
  Brit. 
  Foss. 
  Cor. 
  pt. 
  ii. 
  p. 
  133, 
  

   pi. 
  xxxvi. 
  figs. 
  7, 
  8. 
  

   I 
  have 
  recently 
  taken 
  this 
  coral 
  from 
  the 
  compact 
  yellow 
  stone 
  

   below 
  the 
  Pisolite 
  at 
  Crickley, 
  where 
  it 
  was 
  associated 
  with 
  some 
  

   other 
  Montlivaltice. 
  

  

  MONTLIVALTIA, 
  Sp. 
  

  

  Somewhat 
  resembling 
  M. 
  lens, 
  having 
  a 
  wall 
  which 
  does 
  not 
  

   occupy 
  the 
  whole 
  of 
  the 
  under 
  surface. 
  The 
  calicular 
  surface 
  is 
  

   much 
  more 
  elevated 
  than 
  in 
  M. 
  lens, 
  and 
  has 
  an 
  inflated 
  and 
  

   bulging 
  appearance. 
  I 
  have 
  received 
  specimens, 
  I 
  believe 
  identical 
  

   with 
  this, 
  from 
  M. 
  Rigaux 
  of 
  Boulogne, 
  which 
  he 
  obtained 
  from 
  

   the 
  Great 
  Oolite 
  near 
  that 
  place. 
  It 
  is 
  twice 
  the 
  size 
  of 
  M. 
  lens. 
  

   It 
  occurs 
  in 
  the 
  Trigonia-grit 
  of 
  the 
  Ravensgate 
  and 
  Leckhampton 
  

   Hills*. 
  

  

  MONTLIVALTIA, 
  Sp. 
  

  

  A 
  short 
  coral 
  with 
  a 
  very 
  elongated 
  calice, 
  which 
  is 
  occasioned 
  by 
  

   elongation 
  on 
  one 
  side 
  only. 
  The 
  fossula 
  is 
  very 
  linear, 
  and 
  the 
  

   septa 
  very 
  stout. 
  The 
  latter 
  are 
  much 
  exsert, 
  but 
  the 
  calico 
  is 
  very 
  

   deep. 
  Only 
  one 
  specimen 
  has 
  been 
  met 
  with, 
  and 
  it 
  was 
  taken 
  from 
  

   the 
  Upper 
  Freestone 
  at 
  Leckhampton. 
  

  

  MONTLIVALTIA, 
  Sp. 
  

  

  A 
  Montlivaltia 
  of 
  small 
  size 
  and 
  turbinate 
  form, 
  which 
  has 
  an 
  

   oval 
  calice 
  and 
  stout 
  straight 
  septa. 
  From 
  the 
  Trigonia-grit 
  of 
  

   Ravensgate 
  Hill. 
  

  

  Montlivaltia, 
  sp. 
  

  

  Has 
  a 
  turbinate 
  form 
  with 
  a 
  much 
  elongated 
  fossula 
  and 
  very 
  

   thin 
  wavy 
  septa. 
  

  

  * 
  I 
  have 
  also 
  seen 
  some 
  examples 
  of 
  this 
  species 
  recently 
  taken 
  by 
  Mr. 
  T. 
  J. 
  

   Slatter, 
  F.G.S., 
  and 
  Mr. 
  E. 
  A. 
  Walford, 
  F.G.S., 
  from 
  the 
  Inferior 
  Oolite 
  at 
  

   Hotley 
  Hill, 
  about 
  a 
  mile 
  and 
  a 
  half 
  westward 
  of 
  Hook 
  Norton, 
  Oxfordshire, 
  

   where 
  they 
  were 
  associated 
  with 
  Trigonia 
  costata, 
  T. 
  producta, 
  Terebratula 
  

   simplex, 
  and 
  Clausastrcea 
  Conybeari. 
  As 
  long 
  ago 
  as 
  1868 
  1 
  met 
  with 
  a 
  solitary 
  

   example 
  at 
  that 
  place, 
  but 
  did 
  not 
  then 
  recognize 
  it 
  as 
  distinct 
  from 
  M. 
  lens. 
  

  

  

  

  