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  Geological 
  Survey 
  of 
  Louisiana 
  [Sect. 
  

  

  For 
  general 
  sj'-nonymy 
  and 
  description, 
  see 
  Bull. 
  Am. 
  Pal., 
  

   vol. 
  I, 
  p. 
  159, 
  1896. 
  

  

  The 
  state 
  of 
  preservation 
  of 
  this 
  species 
  in 
  Lousiana 
  is 
  not 
  the 
  

   best. 
  Specimens 
  are 
  firml}- 
  imbedded 
  in 
  the 
  lock 
  and 
  fragments 
  

   only 
  can 
  usually 
  be 
  obtained. 
  In 
  the 
  bed 
  of 
  the 
  brook 
  however, 
  

   there 
  were 
  a 
  few 
  loose, 
  fairly 
  well 
  preserved 
  specimens. 
  It 
  is 
  these 
  

   oyster 
  shells 
  that 
  gave 
  the 
  rock 
  in 
  which 
  they 
  they 
  are 
  imbedded 
  

   its 
  limy 
  character. 
  

  

  Locality 
  — 
  Raines' 
  place, 
  near 
  Rocky 
  Spring 
  church, 
  about 
  six 
  

   miles 
  W. 
  S. 
  W. 
  of 
  Marthaville, 
  Sabine 
  Parish. 
  The 
  writer 
  has 
  

   personall)^ 
  collected 
  this 
  species 
  also 
  near 
  the 
  Cretaceous-Eocene 
  

   border 
  line 
  in 
  Texas, 
  Arkansas, 
  Tennessee, 
  Mississippi, 
  Alabama 
  

   and 
  Georgia. 
  

  

  Ostrea 
  pulaskensis, 
  Plate 
  52, 
  fig. 
  2, 
  3, 
  4. 
  

  

  Syn. 
  — 
  O. 
  pulaskensis 
  Har., 
  see 
  Bull. 
  Am. 
  Pal., 
  vol. 
  i, 
  p. 
  160. 
  

  

  This 
  is 
  the 
  Gryphcs 
  pitcheri 
  Hilgard 
  (Geol. 
  Recon., 
  Final 
  Rept. 
  

   1869, 
  p. 
  29) 
  without 
  doubt. 
  

  

  Mr. 
  Veatcli 
  found 
  a 
  large 
  number 
  of 
  these 
  05'sters 
  lying 
  on 
  

   some 
  of 
  the 
  old 
  dumps 
  at 
  King's 
  salt 
  works 
  ; 
  and 
  it 
  was 
  probably 
  

   here 
  that 
  Hilgard 
  found 
  his 
  specimens. 
  

  

  Vaughau 
  has 
  already 
  called 
  attention 
  (Am. 
  Geol., 
  vol. 
  15, 
  

   p. 
  297, 
  1895 
  and 
  elsewhere) 
  to 
  the 
  fact 
  that 
  " 
  G. 
  pitcheri 
  is 
  a 
  

   Comanche 
  series 
  fossil 
  and 
  does 
  not 
  occur 
  in 
  the 
  upper 
  Creta- 
  

   ceous," 
  but 
  he 
  failed 
  to 
  state 
  what 
  the 
  Louisiana 
  specimens 
  

   really 
  should 
  be 
  called. 
  

  

  Modiola 
  stubbsi 
  n. 
  sp., 
  Plate 
  52, 
  figs. 
  5, 
  6. 
  

  

  The 
  general 
  appearance 
  and 
  dimensions 
  of 
  this 
  species 
  are 
  

   shown 
  b}^ 
  the 
  figures. 
  It 
  is 
  specially 
  characterized 
  by 
  the 
  

   prominent 
  angulation 
  on 
  the 
  posterio-dorsal 
  margin, 
  and 
  by 
  the 
  

   coarseness 
  of 
  the 
  plications 
  between 
  this 
  angulation 
  and 
  the 
  

   most 
  posterior 
  point 
  on 
  the 
  shell. 
  The 
  shell 
  matter 
  is 
  thin 
  and 
  

   its 
  various 
  layers 
  show 
  a 
  beautiful 
  mother-of-pearl 
  appsarance. 
  

   All 
  specimens 
  are 
  broken 
  and 
  crumpled 
  to 
  a 
  considerable 
  extent. 
  

   This 
  species 
  seems 
  to 
  have 
  been 
  the 
  most 
  common 
  associate 
  of 
  

   the 
  large 
  oyster 
  described 
  above. 
  

  

  Locality. 
  — 
  Raines' 
  place, 
  about 
  six 
  miles 
  W. 
  S. 
  W. 
  of 
  Martha- 
  

   ville. 
  

  

  