﻿30 
  

  

  P. 
  H. 
  CARPENTER 
  ON 
  SOME 
  NEW 
  OR 
  

  

  part 
  of 
  the 
  Walton 
  collection 
  ; 
  and 
  the 
  great 
  peculiarity 
  of 
  the 
  

   type, 
  viz. 
  the 
  very 
  variable 
  length 
  of 
  the 
  stem, 
  which 
  had 
  been 
  pre- 
  

   viously 
  noted 
  by 
  Jelly, 
  did 
  not 
  attract 
  his 
  attention. 
  But 
  he 
  

   pointed 
  out 
  that 
  the 
  remarkable 
  shortness 
  of 
  the 
  stem, 
  of 
  which 
  he 
  

   gave 
  a 
  good 
  hgure, 
  is 
  a 
  character 
  which 
  sharply 
  distinguishes 
  this 
  

   species 
  from 
  the 
  other 
  Apiocrinites. 
  

  

  Both 
  Jelly 
  and 
  Goldfuss 
  drew 
  attention 
  to 
  what 
  they 
  regarded 
  as 
  

   pores 
  in 
  the 
  calyx, 
  one 
  being 
  situated 
  immediately 
  beneath 
  the 
  

   centre 
  of 
  each 
  first 
  radial 
  (PI. 
  I. 
  figs. 
  13, 
  21). 
  They 
  spoke 
  of 
  

   them 
  as 
  similar 
  to 
  the 
  pores 
  described 
  by 
  Miller 
  in 
  Apiocrinus 
  

   rotundus 
  ; 
  and 
  the 
  first-mentioned 
  writer 
  pointed 
  out 
  that 
  " 
  they 
  

   are 
  generally 
  closed 
  with 
  a 
  small 
  plate 
  or 
  plug, 
  as 
  it 
  were." 
  The 
  

   same 
  peculiarity 
  was 
  noted 
  by 
  D'Orbigny*, 
  who 
  transferred 
  this 
  

   type 
  amongst 
  others 
  to 
  his 
  new 
  genus 
  Millericrinus, 
  but 
  retained 
  

   for 
  it 
  Goldfuss's 
  specific 
  name, 
  obconicus. 
  According 
  to 
  him, 
  " 
  Par 
  

   sa 
  forme 
  conique, 
  par 
  l'irregularite 
  de 
  ses 
  pieces 
  basales, 
  par 
  le 
  pore 
  

   ou 
  la 
  piece 
  accessoire 
  de 
  celles-ci, 
  le 
  M. 
  obconicus 
  se 
  distingue 
  nette- 
  

   ment 
  des 
  autres 
  especes 
  ; 
  il 
  differe 
  encore 
  par 
  son 
  sommet, 
  auquel 
  

   participent 
  plusieurs 
  articles 
  de 
  la 
  tige." 
  D'Orbigny, 
  like 
  Goldfuss, 
  

   received 
  specimens 
  from 
  Miller, 
  some 
  of 
  which 
  he 
  figured 
  ; 
  but 
  they 
  

   were 
  not 
  sufficiently 
  varied 
  in 
  character 
  for 
  him 
  to 
  detect 
  the 
  most 
  

   striking 
  peculiarity 
  of 
  the 
  type. 
  

  

  In 
  Bronn's 
  'Index 
  Palaeontologicus,' 
  Gray's 
  specific 
  name 
  is 
  

   appended 
  to 
  D'Orbigny 
  's 
  genus 
  ; 
  but 
  a 
  few 
  years 
  later 
  the 
  name 
  

   Apiocrinus 
  reappears 
  in 
  Prof. 
  Morris' 
  ' 
  Catalogue 
  of 
  British 
  Fossils/ 
  

   In 
  no 
  publication 
  of 
  a 
  later 
  date 
  than 
  this 
  have 
  I 
  been 
  able 
  to 
  find 
  

   any 
  mention 
  of 
  the 
  type. 
  It 
  does 
  not 
  appear 
  in 
  any 
  lists 
  of 
  Great 
  

   Oolite 
  fossils 
  with 
  which 
  I 
  am 
  acquainted, 
  and 
  seems 
  to 
  be 
  somewhat 
  

   of 
  a 
  rarity, 
  as 
  but 
  little 
  quarrying 
  is 
  now 
  done 
  on 
  Lansdown 
  ; 
  and 
  

   I 
  was 
  informed 
  by 
  the 
  late 
  Mr. 
  Charles 
  Moore, 
  E.G.S., 
  that 
  he 
  had 
  

   met 
  with 
  no 
  traces 
  of 
  the 
  fossil 
  during 
  forty 
  years 
  of 
  collecting 
  in 
  that 
  

   neighbourhood. 
  There 
  are, 
  however, 
  a 
  few 
  good 
  specimens 
  in 
  other 
  

   collections 
  than 
  that 
  made 
  by 
  Mr. 
  Walton, 
  e. 
  g. 
  in 
  that 
  of 
  Dr. 
  T. 
  

   Wright, 
  P.E.S. 
  ; 
  and 
  I 
  learn 
  from 
  my 
  friend 
  Prof. 
  Sollas 
  that 
  there 
  

   are 
  some 
  fine 
  slabs 
  in 
  the 
  Bristol 
  Museum 
  from 
  the 
  Lansdown 
  

   quarries, 
  which 
  contain 
  the 
  remains 
  of 
  several 
  individuals 
  and 
  bear 
  

   the 
  MS. 
  name 
  Gnathocrinus 
  fusiformis, 
  Austin. 
  The 
  national 
  col- 
  

   lection 
  at 
  South 
  Kensington 
  also 
  contains 
  a 
  few 
  examples 
  of 
  this 
  type, 
  

   including 
  the 
  original 
  of 
  Gray's 
  description 
  of 
  it. 
  

  

  In 
  many 
  cases 
  these 
  Millericrinus 
  remains 
  are 
  closely 
  intermingled 
  

   with 
  those 
  of 
  a 
  fine 
  Pentacrinus, 
  as 
  on 
  the 
  slab 
  mentioned 
  by 
  

   Mr. 
  Jelly. 
  They 
  may 
  at 
  once 
  be 
  distinguished 
  by 
  their 
  ten 
  simple 
  

   arms, 
  those 
  of 
  the 
  Pentacrinus 
  forking 
  once 
  or 
  oftener. 
  

  

  The 
  series 
  in 
  the 
  Walton 
  collection 
  is 
  not 
  distinguished 
  by 
  the 
  

   presence 
  of 
  any 
  especially 
  well-preserved 
  specimen 
  with 
  long 
  arms 
  

   and 
  pinnules, 
  such 
  as 
  one 
  frequently 
  meets 
  with 
  among 
  the 
  Penta- 
  

   crinites 
  ; 
  but 
  it 
  is 
  of 
  unusual 
  interest 
  to 
  the 
  morphological 
  palaeonto- 
  

   logist, 
  as 
  it 
  contains 
  so 
  many 
  individuals 
  presenting 
  remarkable 
  

  

  * 
  ' 
  Hist. 
  Nat. 
  des 
  Crinoides 
  vivans 
  et 
  fossiles,' 
  Paris, 
  1840, 
  p. 
  80, 
  pi. 
  xiy. 
  

   figs. 
  23-28. 
  

  

  