﻿254 
  On 
  British 
  Fossil 
  Crinoids'. 
  

  

  clausus. 
  Can 
  it 
  then 
  be 
  denied 
  tliat 
  the 
  Timor 
  echinoderms 
  

   are 
  clearly 
  of 
  Carboniferous 
  age? 
  One 
  would 
  even 
  suppose 
  

   them 
  to 
  be 
  Lower 
  or 
  at 
  least 
  Middle 
  Carboniferous. 
  Other 
  

   constituents 
  of 
  the 
  fauna 
  are 
  said 
  to 
  be 
  Artiuskian, 
  and 
  

   therefore 
  Permian; 
  but 
  after 
  all, 
  what 
  is 
  '^ 
  Artinskian 
  " 
  ? 
  

   I 
  do 
  not 
  propose 
  to 
  attempt 
  an 
  ansAver 
  to 
  that 
  question, 
  but 
  

   I 
  insist 
  that 
  no 
  answer 
  will 
  be 
  satisfactory 
  which 
  fails 
  to 
  

   recognize 
  the 
  markedly 
  Carboniferous 
  character 
  of 
  the 
  

   Echinoderm 
  elements 
  of 
  the 
  fauna. 
  

  

  SUMMAllY. 
  

  

  Sijcocrinus 
  T. 
  & 
  T. 
  Austin, 
  1843, 
  is 
  discussed 
  on 
  the 
  

   evidence 
  of 
  the 
  Austins^ 
  published 
  definitions, 
  unpublished 
  

   figures, 
  MS. 
  list, 
  and 
  one 
  specimeu 
  of 
  S. 
  anapejjiamenus 
  in 
  

   the 
  Austin 
  Collection 
  at 
  the 
  Liverpool 
  Museum. 
  

  

  All 
  the 
  species 
  came 
  from 
  the 
  Visean 
  Dibtinophyllum 
  zone, 
  

   of 
  Settle, 
  Yorkshire. 
  

  

  S. 
  anaijeptamenits 
  is 
  fixed 
  as 
  genotype, 
  and 
  Sijcocrinus 
  re- 
  

   diagnosed 
  as 
  a 
  Taxocririid, 
  including 
  also 
  ^' 
  Hyijocrinus" 
  

   piriformis 
  Rothpletz. 
  Its 
  peculiarities 
  are 
  probably 
  due 
  to 
  

   a 
  reef-habitat. 
  

  

  S. 
  clausus 
  may 
  be 
  an 
  independent 
  species 
  of 
  Sijcocrinus, 
  

   or 
  may 
  be 
  a 
  Hi/pocrinus 
  ; 
  but 
  in 
  the 
  absence 
  of 
  any 
  known 
  

   sjiecimeu, 
  its 
  precise 
  generic 
  position 
  remains 
  uncertain. 
  

  

  S. 
  jacksoni 
  is, 
  like 
  Lac/eniocrinus 
  seminulumj 
  probably 
  the 
  

   young 
  of 
  a 
  Si/jnbathocrinus. 
  

  

  The 
  occurrence 
  of 
  Sijcocrinus, 
  Cydonocrinus, 
  and 
  possibly 
  

   Hypocrinus, 
  in 
  both 
  England 
  and 
  Timor, 
  confirms 
  the 
  

   author's 
  previously 
  expressed 
  views 
  as 
  to 
  the 
  Carboniferous 
  

   age 
  of 
  the 
  Timor 
  fossil 
  Echinoderms. 
  

  

  EXPLANATION 
  OF 
  PLATE 
  X. 
  

  

  Fit/. 
  1. 
  Sycocriims 
  anapeptamemis 
  Austin: 
  three 
  views 
  of 
  the 
  lecto- 
  

   holotype, 
  X 
  4 
  diam., 
  drawn 
  by 
  A. 
  IL 
  tSearle 
  * 
  under 
  the 
  

   Author's 
  direction. 
  

  

  Fig. 
  1 
  a. 
  Posterior 
  aspect. 
  

  

  Fiy. 
  1 
  b. 
  Oral 
  aspect; 
  the 
  outlines 
  of 
  tlie 
  destroyed 
  plates 
  are 
  dotted 
  in. 
  

  

  Fig. 
  1 
  c. 
  From 
  the 
  left 
  anterior 
  interradius. 
  

  

  Fig. 
  1 
  (/. 
  Imaginary 
  reconstruction 
  of 
  the 
  aniuial, 
  from 
  the 
  right 
  posterior 
  

   interradius, 
  X 
  2 
  diam. 
  F. 
  A. 
  B. 
  

  

  * 
  Many 
  naturalists, 
  and 
  not 
  least 
  those 
  occupied 
  with 
  fossil 
  echino- 
  

   derms, 
  will 
  regret 
  the 
  sudden 
  death 
  of 
  Artluir 
  Ilodson 
  Searle, 
  whicJi 
  

   occurred 
  on 
  tlie 
  first 
  day 
  of 
  this 
  j'ear. 
  It 
  has 
  often 
  been 
  my 
  pleasure 
  to 
  

   record 
  my 
  indebtedness 
  to 
  his 
  care, 
  intelligence, 
  and 
  skill. 
  

  

  