﻿586 
  DR. 
  W. 
  FKASER 
  HUME 
  OX 
  [Dec. 
  1 
  89 
  7, 
  

  

  In 
  the 
  foregoing 
  list 
  the 
  most 
  prominent 
  species 
  observed 
  by 
  

   the 
  present 
  writer 
  are 
  mentioned, 
  except 
  where 
  a 
  name 
  is 
  attached, 
  

   indicating 
  the 
  authority 
  for 
  the 
  occurrence. 
  

  

  Besides 
  these 
  the 
  following 
  species 
  have 
  been 
  recognized 
  : 
  — 
  

  

  Eocogyra 
  conica, 
  var. 
  undata, 
  Sow. 
  ; 
  large 
  casts 
  of 
  Cucullcea 
  ligeri- 
  

   ensis 
  (d'Orb.), 
  from 
  Squires 
  Hill 
  (agreeing 
  with 
  casts 
  obtained 
  at 
  

   Yimontiers) 
  ; 
  and 
  Oyprina, 
  of 
  unrecognized 
  species, 
  from 
  Squires 
  Hill. 
  

  

  Mr. 
  Jukes-Browne 
  has 
  examined 
  a 
  series 
  of 
  fossils 
  from 
  this 
  

   horizon, 
  and 
  the 
  following 
  notes 
  are 
  culled 
  from 
  his 
  remarks 
  and 
  

   suggestions 
  : 
  — 
  ' 
  Of 
  the 
  Aviculce 
  there 
  are 
  three 
  different 
  species, 
  one 
  

   of 
  which 
  resembles 
  Avicida 
  lineata, 
  Romer 
  ; 
  but, 
  though 
  there 
  is 
  a 
  

   resemblance, 
  the 
  figure 
  shows 
  a 
  ridge 
  on 
  the 
  anterior 
  side 
  which 
  is 
  

   absent 
  in 
  the 
  Irish 
  specimen. 
  

  

  * 
  Of 
  the 
  pectens 
  the 
  fragment 
  of 
  the 
  large 
  coarse 
  species 
  is 
  P. 
  asper; 
  

   the 
  ribs 
  become 
  more 
  separated 
  with 
  age. 
  Another 
  (probably 
  that 
  

   referred 
  to 
  by 
  Tate 
  as 
  P. 
  Dutemplei) 
  is 
  nearer 
  P. 
  Galliennei, 
  

   d'Orb., 
  and 
  agrees 
  with 
  those 
  from 
  Warminster 
  identified 
  by 
  

   me 
  as 
  Galliennei. 
  The 
  smaller 
  ones 
  have 
  no 
  oblique 
  striation 
  and 
  

   are 
  nearer 
  to 
  P. 
  hispidus, 
  Goldf. 
  There 
  is 
  also 
  a 
  small 
  Pecten 
  allied 
  

   to 
  P. 
  divaricatus, 
  Reuss. 
  

  

  4 
  The 
  Bhynchonella 
  seems 
  to 
  be 
  Bh. 
  Cuvieri. 
  It 
  might 
  be 
  

   Bh. 
  Weistii 
  of 
  Davidson's 
  Supplement, 
  but 
  appears 
  to 
  agree 
  better 
  

   with 
  Ph. 
  Cuvieri. 
  (This 
  appears 
  to 
  be 
  the 
  species 
  referred 
  to 
  by 
  

   Tate 
  as 
  Rli. 
  nuciformis.) 
  Some 
  triangular 
  single 
  valves 
  also 
  occur, 
  

   which 
  may 
  be 
  young 
  individuals, 
  of 
  the 
  triangular 
  race 
  of 
  Ph. 
  Man- 
  

   telliana 
  as 
  it 
  occurs 
  in 
  Dorset. 
  

  

  'The 
  small 
  Terebratidce 
  are 
  not 
  determinable; 
  there 
  is 
  one 
  which 
  

   may 
  be 
  T. 
  squamosa, 
  but 
  also 
  it 
  may 
  be 
  a 
  young 
  biplicata. 
  Some 
  

   have 
  the 
  shape 
  of 
  Eingena 
  lima 
  and 
  are 
  probably 
  that 
  shell.' 
  

  

  Respecting 
  the 
  age 
  of 
  these 
  beds, 
  Tate 
  says 
  : 
  — 
  ' 
  The 
  zone 
  of 
  

   Exogyra 
  conica 
  represents 
  the 
  basement-beds 
  of 
  the 
  Etage 
  Ce'no- 
  

   manien 
  of 
  the 
  French 
  geologists, 
  and 
  is 
  approximately 
  equivalent 
  

   to 
  the 
  Greensand 
  of 
  Blackdown.' 
  1 
  Barrois 
  remarks 
  : 
  ' 
  The 
  glauconitic 
  

   zone 
  with 
  Ostrea 
  conica, 
  Pecten 
  asper, 
  Belemnites 
  idtimus, 
  and 
  

   Ammonites 
  varians, 
  corresponds 
  almost 
  certainly 
  with 
  the 
  Ceno- 
  

   manian 
  zone 
  of 
  Pecten 
  asper, 
  the 
  Warminster 
  Beds 
  of 
  England, 
  

   and 
  the 
  Holaster 
  nodidosus-zone 
  of 
  M. 
  Hebert. 
  It 
  strikingly 
  

   recalls, 
  both 
  in 
  its 
  fauna 
  and 
  petrographical 
  characters, 
  the 
  zone 
  

   of 
  the 
  same 
  name 
  in 
  the 
  North-east 
  of 
  Prance.' 
  2 
  The 
  fauna 
  

   above 
  mentioned 
  bears 
  the 
  closest 
  resemblance 
  to 
  that 
  of 
  the 
  

   Upper 
  Greensand 
  in 
  the 
  West 
  of 
  England, 
  almost 
  every 
  species 
  

   present 
  in 
  Ireland 
  having 
  also 
  been 
  recorded 
  from 
  the 
  latter 
  district. 
  

   But 
  though 
  the 
  general 
  relationships 
  of 
  the 
  Glauconitic 
  Sands 
  are 
  

   thus 
  easily 
  determinable, 
  the 
  consideration 
  of 
  their 
  position 
  in 
  the 
  

   classification 
  of 
  the 
  Upper 
  Cretaceous 
  rocks 
  involves 
  a 
  discussion 
  of 
  

   nomenclature. 
  Barrois, 
  3 
  following 
  Hebert, 
  placed 
  the 
  Upper 
  Green- 
  

   sand 
  at 
  the 
  base 
  of 
  the 
  Cenomanian, 
  regarding 
  it 
  as 
  markedly 
  

   separate 
  from 
  the 
  underlying 
  Gault. 
  A 
  further 
  study 
  of 
  these 
  

  

  1 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  xxi. 
  (1865) 
  p. 
  33. 
  

  

  2 
  ' 
  Eecbercbes 
  sur 
  le 
  Terrain 
  Cretace 
  Superieur 
  de 
  l'Angleterre 
  et 
  de 
  

   Tlrlande,' 
  Lille, 
  1876, 
  p. 
  213. 
  3 
  Ibid. 
  p. 
  7. 
  • 
  

  

  