﻿ON 
  SOME 
  NEW 
  OR 
  LITTLE-KNOWN 
  JURASSIC 
  CRINOIDS. 
  29 
  

  

  3. 
  On 
  some 
  new 
  or 
  little-known 
  Jurassic 
  Crinoids. 
  By 
  P. 
  Her- 
  

   bert 
  Carpenter, 
  Esq., 
  M.A., 
  Assistant-Master 
  at 
  Eton 
  College. 
  

   (Read 
  December 
  7, 
  1881.) 
  

  

  [Plate 
  I.] 
  

  

  I. 
  The 
  Lansdown 
  Encrinite. 
  

  

  Millericrinus 
  Prattlt, 
  Gray, 
  sp. 
  

  

  1828. 
  Encrinites 
  (Apiocrmites) 
  Prattii, 
  Gray, 
  Phil. 
  Mag. 
  vol. 
  iv. 
  

  

  p. 
  219. 
  

   1833. 
  The 
  Lansdown 
  Encrinite, 
  Jelly, 
  Bath 
  and 
  Bristol 
  Mag. 
  vol. 
  ii. 
  

  

  p. 
  36. 
  

  

  1833. 
  Ajpiocrinites 
  obconicus, 
  Goldfuss, 
  Petref. 
  Germ. 
  Band 
  i. 
  

  

  p. 
  187, 
  Taf. 
  lvii. 
  fig. 
  5. 
  

  

  1834. 
  Apiocrinus 
  obconicus, 
  Fischer, 
  Bibl. 
  Palaeont. 
  Anim. 
  p. 
  319. 
  

   1840. 
  Millericrinus 
  obconicus, 
  D'Orbigny, 
  Hist. 
  Nat. 
  des 
  Crinoides 
  

  

  vivans 
  et 
  fossiles, 
  p. 
  80, 
  pi. 
  xiv. 
  figs. 
  23-28. 
  

   1848. 
  Millericrinus 
  Pratti, 
  Bronn, 
  Index 
  Palaeontol. 
  p. 
  729. 
  

   1854. 
  Apiocrinus 
  Prattii, 
  Morris, 
  Cat. 
  Brit. 
  Eoss. 
  2nd 
  ed. 
  p. 
  72. 
  

  

  The 
  fine 
  collection 
  of 
  Oolitic 
  fossils 
  which 
  was 
  made 
  by 
  the 
  late 
  

   Mr. 
  William 
  Walton, 
  of 
  Bath, 
  and 
  was 
  purchased 
  some 
  years 
  ago 
  by 
  

   the 
  University 
  of 
  Cambridge, 
  contains 
  a 
  very 
  remarkable 
  series 
  of 
  

   specimens 
  of 
  a 
  Crinoid 
  from 
  the 
  Great 
  Oolite 
  of 
  Lansdown, 
  a 
  well- 
  

   known 
  hill 
  at 
  Bath. 
  Its 
  occurrence 
  seems 
  to 
  have 
  been 
  first 
  

   recorded 
  (though 
  not 
  first 
  noted) 
  in 
  the 
  year 
  1828 
  by 
  the 
  late 
  

   Dr. 
  J. 
  E. 
  Gray*, 
  who 
  made 
  a 
  curious 
  error 
  with 
  regard 
  to 
  its 
  

   geological 
  horizon, 
  stating 
  it 
  to 
  have 
  been 
  found 
  in 
  the 
  Lias. 
  He 
  

   named 
  the 
  type 
  Ajoiocrinites 
  Prattii, 
  and 
  described 
  it 
  as 
  inter- 
  

   mediate 
  in 
  character 
  between 
  the 
  A. 
  ellipticus 
  and 
  A. 
  rotundus 
  of 
  

   Miller. 
  

  

  Some 
  years 
  after 
  the 
  publication 
  (1821) 
  of 
  the 
  well-known 
  work 
  

   on 
  Crinoids 
  by 
  the 
  last-named 
  author, 
  some 
  specimens 
  of 
  this 
  species 
  

   were 
  shown 
  to 
  him 
  by 
  the 
  Rev. 
  H. 
  Jelly, 
  who 
  states 
  that 
  Miller 
  " 
  was 
  

   unable 
  to 
  satisfy 
  his 
  own 
  mind 
  as 
  to 
  their 
  true 
  nature 
  and 
  history." 
  

   In 
  the 
  year 
  1833 
  a 
  semipopular 
  illustrated 
  account 
  of 
  these 
  fossils 
  

   was 
  published 
  by 
  Mr. 
  Jelly 
  f, 
  and 
  about 
  the 
  same 
  time 
  they 
  were 
  

   redescribed 
  by 
  Goldfuss 
  J, 
  with 
  the 
  aid 
  of 
  some 
  excellent 
  figures, 
  

   under 
  the 
  name 
  of 
  A. 
  obconicus. 
  He 
  had, 
  however, 
  a 
  smaller 
  series 
  

   of 
  specimens 
  than 
  those 
  at 
  Jelly's 
  disposal, 
  some 
  of 
  which 
  now 
  form 
  

  

  * 
  " 
  Description 
  of 
  a 
  new 
  kind 
  of 
  Pear-Encrinite 
  found 
  in 
  England," 
  Phil. 
  

   Mag. 
  vol. 
  iv. 
  pp. 
  219, 
  220. 
  

  

  t 
  " 
  The 
  Lansdown 
  Encrinite," 
  Bath 
  and 
  Bristol 
  Mag. 
  no. 
  5, 
  vol. 
  ii. 
  January 
  

   1833, 
  pp. 
  36-47. 
  

  

  % 
  Petref. 
  Germ. 
  Bd. 
  i. 
  p. 
  187, 
  Taf. 
  lvii. 
  fig. 
  5. 
  

  

  