﻿Brilish 
  Foshil 
  Cri'nokh. 
  24:7 
  

  

  Tlie 
  geological 
  and 
  geograpliical 
  distribution 
  of 
  these 
  

   species 
  arc 
  nowhere 
  even 
  hinted 
  at, 
  an 
  omission 
  justly 
  de- 
  

   plored 
  by 
  L. 
  von 
  Eluch 
  (18l5, 
  ' 
  Ueber 
  Cystideen/ 
  pp. 
  113- 
  

   114) 
  when 
  he 
  referred 
  S. 
  jacksoni 
  and 
  S. 
  anapepfamenus 
  to 
  

   Cri/ptocriims 
  cerasus, 
  an 
  Ordovician 
  oystid, 
  haviijj;-, 
  erro- 
  

   neously 
  I 
  think, 
  interpreted 
  Austin's 
  definitions 
  to 
  mean 
  that 
  

   the 
  third 
  circlet 
  of 
  plates 
  in 
  S. 
  anapeptatnmus 
  was 
  homo- 
  

   logous 
  with 
  the 
  third 
  circlet 
  in 
  S. 
  jacksoni. 
  Von 
  Buch 
  

   rightly 
  noted 
  the 
  distinction 
  between 
  S. 
  clausus 
  (with 
  four 
  

   circlets) 
  and 
  S. 
  jacksoni 
  (with 
  three 
  circlets). 
  

  

  Commenting 
  on 
  this 
  in 
  November 
  1818 
  (Quart, 
  Journ. 
  

   Geol. 
  Soc, 
  vol, 
  iv., 
  Proc. 
  p. 
  293), 
  T. 
  Austin, 
  F.G.S. 
  [i. 
  e. 
  the 
  

   Fort-Major], 
  appeared 
  to 
  accept 
  Von 
  Buch's 
  reference 
  of 
  two 
  

   species 
  to 
  Cryptocrinus, 
  and 
  explained 
  that 
  they 
  occurred 
  

   " 
  in 
  the 
  carboniferous 
  limestone 
  of 
  Yorkshire/^ 
  That 
  state- 
  

   ment 
  was 
  probably 
  intended 
  to 
  apply 
  also 
  to 
  S 
  clausus. 
  

   Similarly 
  in 
  October 
  1851 
  (^Vnn. 
  & 
  Mag, 
  Nat. 
  Hist. 
  ser. 
  2, 
  

   vol. 
  viii, 
  pp. 
  289^290) 
  Fort-Major 
  Austin, 
  in 
  maintaining 
  

   against 
  Edward 
  Forbes 
  that 
  cystids 
  were 
  found 
  in 
  the 
  

   Carboniferous 
  rocks, 
  implied 
  that 
  some, 
  if 
  not 
  all, 
  of 
  his 
  

   specimens 
  of 
  Sf/cocrinus 
  came 
  from 
  " 
  our 
  Mountain. 
  Limcr 
  

   stone. 
  ^' 
  

  

  H. 
  G. 
  Bronn 
  in 
  1860 
  {' 
  Klass. 
  und 
  Ordn.' 
  vol. 
  ii. 
  p. 
  230) 
  and 
  

   Dujardin 
  & 
  Hupe 
  in 
  1862 
  ('Echinodermes/ 
  p. 
  70) 
  mentioned 
  

   the 
  name 
  Sycocrinites 
  as 
  a 
  syijonyrn 
  of 
  Cryptocrinus, 
  doubt- 
  

   less 
  without 
  independent 
  enquiry. 
  

  

  About 
  twenty 
  years 
  ago 
  the 
  late 
  Mr 
  R. 
  Ftheridge, 
  F.ll.S., 
  

   showed 
  me 
  some 
  drawings 
  by 
  T. 
  Austin 
  (? 
  junior) 
  arranged 
  

   as 
  a 
  plate 
  in 
  continuation 
  of 
  the 
  Austins' 
  ' 
  Monograph.' 
  

   Some 
  of 
  these, 
  to 
  my 
  delight, 
  represented 
  the 
  three 
  species 
  

   of 
  Sycocrlnus, 
  the 
  naiiaes 
  being 
  pencilleil 
  on 
  the 
  back 
  of 
  the 
  

   sheet 
  by 
  Ft.-rMajor 
  Austin. 
  It 
  was 
  on 
  this 
  evidence, 
  and 
  

   before 
  I 
  had 
  observed 
  the 
  above- 
  quoted 
  statements 
  as 
  to 
  the 
  

   horizon, 
  that 
  in 
  1900 
  I 
  published 
  the 
  remark 
  : 
  " 
  the 
  authors' 
  

   Ms. 
  drawings 
  suggest 
  that 
  S. 
  clausus 
  ==■ 
  Lageniocrinns, 
  

   8. 
  jacksoni:=Crypioc7'inus, 
  and 
  >S^. 
  a?iapeptamenus 
  = 
  Hypo- 
  

   crinus'' 
  (* 
  Treatise 
  on 
  Zoology,' 
  vol. 
  iii. 
  p. 
  203). 
  With 
  the 
  

   fairly 
  clear 
  evidence 
  o£ 
  the 
  figures 
  before 
  me, 
  I 
  had 
  not 
  

   troubled 
  to 
  compare 
  them 
  with 
  Austin's 
  published 
  definitions, 
  

   Had 
  I 
  done 
  so 
  1 
  should 
  have 
  detected 
  a 
  mistake 
  in 
  Austin's 
  

   own 
  reference. 
  It 
  is 
  quite 
  plain 
  that 
  in 
  hjs 
  roughly 
  pencilled 
  

   note 
  he 
  transposed 
  the 
  numbers 
  3 
  and 
  4, 
  which 
  should 
  

   refer 
  to 
  /S. 
  clausus 
  and 
  S. 
  jacksoni 
  re^yteci\vG\y. 
  Only 
  thus 
  

   can 
  the 
  drawings 
  in 
  question 
  be 
  made 
  to 
  agree 
  wjth 
  the 
  

   definitions, 
  Hfld 
  I 
  observed 
  this, 
  I 
  would 
  have 
  writteu 
  

   ^' 
  S. 
  jacksoni 
  = 
  Layeniocrinas, 
  S. 
  clausus 
  = 
  Cryptocriyius," 
  

  

  17>* 
  

  

  