﻿)04 
  

  

  Geological 
  Survey 
  of 
  Louisiana 
  [Sect. 
  

  

  Cerotiia. 
  

  

  We 
  cannot 
  presume 
  to 
  identify 
  or 
  name 
  specifically 
  the 
  frag- 
  

   mentary 
  specimens 
  in 
  hand. 
  Suffice 
  to 
  say 
  they 
  seem 
  to 
  be 
  quite 
  

   common, 
  and 
  can 
  easih' 
  be 
  told 
  by 
  the 
  silvery 
  character 
  of 
  the 
  

   shell 
  matter. 
  

  

  Locality. 
  — 
  Sabinetown 
  and 
  Pendleton, 
  Tex. 
  

  

  Pholas 
  alatoideus, 
  Plate 
  53, 
  fig. 
  12. 
  

  

  Syn. 
  — 
  See 
  Bull. 
  Amer. 
  Pal., 
  vol. 
  2, 
  p. 
  261. 
  

  

  We 
  have 
  little 
  doubt 
  as 
  to 
  the 
  specific 
  identity 
  of 
  this 
  imperfect 
  

   cast 
  with 
  the 
  Alabama 
  Lignitic 
  specimens. 
  It 
  will 
  be 
  observed, 
  

   however, 
  that 
  in 
  Alabama 
  the 
  species 
  comes 
  from 
  the 
  Lower 
  

   lyignitic, 
  while 
  this 
  is 
  from 
  Sabinetown, 
  and 
  Upper 
  Lignitic 
  

   horizon. 
  

  

  GASTROPODA 
  

  

  Pleurotoma 
  huppertzi 
  var. 
  

  

  Syn. 
  — 
  P. 
  huppertzi 
  vSiX 
  penrosei'H.dir. 
  , 
  Acad. 
  Nat. 
  Sci. 
  Phila., 
  1895, 
  

   p. 
  58, 
  pi. 
  4, 
  fig. 
  10. 
  

   P. 
  servatoidea 
  Aid., 
  Bull. 
  Amer. 
  Pal., 
  vol. 
  i, 
  p. 
  59, 
  pi. 
  5, 
  

  

  fig- 
  5, 
  1895. 
  

  

  The 
  beds 
  at 
  Smithville, 
  Texas, 
  have 
  a 
  number 
  of 
  species 
  with 
  

   Lignitic 
  affinities. 
  This 
  is 
  very 
  evident 
  so 
  far 
  as 
  the 
  Pleicroto7ncB 
  

   are 
  concerned. 
  'X:\\^ 
  servatoidea 
  z.^ 
  Aldrich 
  has 
  stjdedit 
  in 
  Alabama, 
  

   is 
  common 
  to 
  the 
  Upper 
  and 
  Lower 
  Lignitic, 
  but 
  so 
  far 
  as 
  we 
  are 
  

   aware, 
  has 
  not 
  yet 
  been 
  recorded 
  from 
  the 
  Lower 
  Claiborne. 
  The 
  

   specimen 
  in 
  hand 
  is 
  a 
  typical 
  Alabama 
  Lignite 
  form. 
  

  

  Locality. 
  — 
  Sabinetown, 
  Tex. 
  Heie 
  in 
  the 
  Upper 
  Lignitic. 
  

  

  Pleurotoma 
  silicata, 
  Plate 
  54, 
  fig. 
  i. 
  

  

  Syn. 
  — 
  P. 
  silicata 
  Aid., 
  Bull. 
  Amer. 
  Pal., 
  vol. 
  i, 
  p. 
  60, 
  pi. 
  4, 
  fig. 
  3, 
  

   1895. 
  See 
  also, 
  vol. 
  3, 
  p. 
  21, 
  pi. 
  2, 
  fig. 
  13, 
  1899. 
  

  

  There 
  are 
  quite 
  a 
  number 
  of 
  specimens 
  of 
  this 
  species 
  in 
  our 
  

   collection 
  from 
  Pendleton. 
  In 
  Alabama 
  thus 
  far 
  the 
  form 
  is 
  

   known 
  only 
  from 
  Gregg's 
  landing. 
  This 
  then 
  goes 
  to 
  show, 
  along 
  

   with 
  others, 
  the 
  close 
  equivalence 
  of 
  these 
  two 
  localities 
  on 
  oppo- 
  

   site 
  sides 
  of 
  the 
  Mississippi, 
  so 
  distant 
  from 
  each 
  other. 
  

  

  Locality. 
  — 
  Pendleton, 
  Tex. 
  

  

  