﻿E. 
  P. 
  TOMES 
  ON 
  LOWER-OOLITE 
  MADEEPOEAEIA. 
  415 
  

  

  Description 
  of 
  the 
  Genera 
  and 
  Species. 
  

  

  In 
  the 
  number 
  and 
  variety 
  of 
  the 
  species, 
  these 
  coralliferous 
  beds 
  

   of 
  the 
  Inferior 
  Oolite 
  furnish 
  interesting 
  material 
  for 
  research. 
  

   Several 
  genera 
  are 
  now 
  for 
  the 
  first 
  time 
  made 
  known 
  as 
  occurring 
  

   in 
  the 
  Jurassic 
  formation 
  of 
  this 
  country, 
  some 
  of 
  which 
  have 
  not 
  

   heretofore 
  been 
  recorded 
  as 
  appertaining 
  to 
  this 
  or 
  any 
  other 
  English 
  

   formation. 
  

  

  Donacosmilia, 
  hitherto 
  known 
  to 
  have 
  been 
  met 
  with 
  only 
  in 
  the 
  

   corallian 
  of 
  Prance, 
  appears 
  and 
  is 
  common 
  in 
  the 
  lower 
  and 
  middle 
  

   coral-beds 
  at 
  both 
  the 
  Crickley 
  and 
  Leckhampton 
  Hills. 
  

  

  Confusastrcea 
  has 
  also 
  been 
  met 
  with 
  in 
  the 
  same 
  beds 
  and 
  at 
  the 
  

   same 
  places. 
  

  

  Cyathophyllia 
  and 
  DimorpJiastrcea 
  I 
  introduced 
  into 
  the 
  English 
  

   list 
  in 
  1878, 
  and 
  the 
  introduction 
  of 
  one 
  has 
  been 
  confirmed 
  by 
  the 
  

   acquisition 
  of 
  additional 
  specimens, 
  while 
  the 
  other 
  proves 
  to 
  be 
  a 
  

   species 
  of 
  Dimorpharoea. 
  

  

  Oroseris, 
  up 
  to 
  this 
  time 
  known 
  as 
  an 
  English 
  genus 
  only 
  by 
  an 
  

   unsatisfactory 
  fragment 
  from 
  the 
  Upper 
  Greensand 
  of 
  Haldon 
  # 
  , 
  is 
  

   now 
  represented 
  by 
  several 
  well-marked 
  species. 
  

  

  Dimorpharcea, 
  established 
  by 
  M. 
  de 
  Eromentel 
  in 
  1858-61 
  f, 
  is 
  

   represented 
  by 
  four. 
  

  

  To 
  complete 
  the 
  list 
  of 
  genera, 
  the 
  discovery 
  of 
  which 
  has 
  so 
  much 
  

   altered 
  the 
  whole 
  fades 
  of 
  the 
  coral-fauna 
  of 
  the 
  Inferior 
  Oolite, 
  

   I 
  must 
  now 
  mention 
  two 
  which 
  I 
  have 
  found 
  it 
  necessary 
  to 
  create 
  

   for 
  the 
  reception 
  of 
  certain 
  corals 
  which 
  could, 
  not 
  satisfactorily 
  be 
  

   placed 
  with 
  those 
  of 
  any 
  recognized 
  genera. 
  

  

  One 
  of 
  them 
  is 
  a 
  genus 
  of 
  the 
  compound 
  Astrseidse, 
  to 
  which 
  I 
  

   have 
  given 
  the 
  name 
  of 
  Phyllogyra. 
  

  

  The 
  other 
  is 
  one 
  of 
  the 
  Poritidas, 
  and 
  is 
  here 
  named 
  Phylloseris. 
  

  

  ZOANTHABIA 
  APOROSA. 
  

  

  Pamily 
  ASTR^ID^. 
  

  

  Subfamily 
  Etj 
  smiling. 
  

  

  Genus 
  Epismilia, 
  de 
  From. 
  

   Eptsmilia, 
  sp. 
  

  

  A 
  single 
  example 
  of 
  a 
  small 
  turbinate 
  coral 
  was 
  found 
  by 
  me 
  in 
  

   the 
  Trigonia-gvit 
  at 
  Havensgate 
  Hill, 
  which, 
  though 
  not 
  in 
  a 
  suffi- 
  

   ciently 
  satisfactory 
  state 
  of 
  preservation 
  to 
  admit 
  of 
  description, 
  is 
  

   nevertheless 
  referable 
  to 
  the 
  genus 
  Epismilia. 
  

  

  The 
  edges 
  of 
  the 
  septa 
  have 
  been 
  worn 
  off, 
  but 
  all 
  of 
  them 
  have 
  

   their 
  sides 
  quite 
  smooth. 
  The 
  principal 
  ones 
  retain 
  their 
  size 
  until 
  

   they 
  approach 
  the 
  greatly 
  elongated 
  fossula, 
  when 
  they 
  become 
  at- 
  

   tenuated, 
  much 
  curved, 
  and, 
  crossing 
  the 
  central 
  line, 
  interlace, 
  but 
  

   do 
  not 
  blend 
  with 
  each 
  other. 
  

  

  The 
  dissepiments 
  arc 
  strongly 
  developed 
  and 
  numerous, 
  and 
  placed 
  

  

  * 
  Prof. 
  Duncan, 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  xxxv. 
  p. 
  89. 
  

   t 
  Introd. 
  Etude 
  Polyp. 
  Foss. 
  p. 
  254. 
  

  

  