﻿B08 
  PALEONTOLOGY 
  OP 
  ILLINOIS. 
  

  

  long; 
  the 
  second, 
  third 
  and 
  fourth, 
  quadrangular, 
  and 
  marly 
  as 
  

   wide 
  as 
  tin' 
  first, 
  their 
  width 
  being 
  equal 
  to 
  about 
  once 
  and 
  a 
  half 
  

   their 
  length. 
  The 
  fifth 
  radial 
  is 
  pentagonal, 
  and 
  supports 
  upon 
  its 
  

   upper 
  eloping 
  Bides 
  the 
  divisions 
  of 
  the 
  rays. 
  Tin 
  arm-, 
  beyond 
  

  

  tin- 
  first 
  division, 
  throw 
  off 
  armlets 
  at 
  intervals 
  of 
  five 
  or 
  six 
  plates 
  

   to 
  their 
  extremities 
  on 
  the 
  only 
  rays 
  that 
  are 
  preserved 
  in 
  I 
  

   mens 
  obtained. 
  

  

  None 
  id 
  the 
  specimens 
  show 
  more 
  than 
  two 
  or 
  three 
  inter-radial 
  

   plates. 
  The 
  first 
  of 
  these 
  is 
  hexagonal, 
  ahout 
  as 
  wide 
  as 
  long, 
  and 
  

   this 
  was 
  apparently 
  succeeded 
  by 
  a 
  series 
  of 
  three 
  smaller 
  plates 
  

   that 
  are 
  but 
  partially 
  preserved. 
  Anal 
  plates 
  unknown. 
  

  

  Column 
  round, 
  largest 
  at 
  its 
  junction 
  with 
  the 
  body, 
  an 
  1 
  c 
  

   posed 
  of 
  very 
  thin, 
  even 
  joints. 
  

  

  / 
  rition 
  mid 
  locality: 
  Chester 
  limestone, 
  Monroe 
  county. 
  111. 
  

  

  No. 
  2,442, 
  Illinois 
  State 
  collection. 
  

  

  G] 
  roe 
  TAXOCRINUS, 
  Phillips. 
  

  

  T\-:o( 
  KiNt 
  s 
  Fletohbbi, 
  Worthen. 
  

   ri. 
  nxx. 
  l 
  

  

  Tasiicrinu* 
  Fletcfteri, 
  WonTnex. 
  Fet>runry. 
  1882. 
  

  

  JluHi-tin 
  .if 
  the 
  Illinois 
  State 
  MusHuin 
  of 
  Nnturu 
  p.SL 
  

  

  Body, 
  with 
  arms 
  complete, 
  ovate 
  in 
  outline, 
  lobate, 
  oom] 
  

   thick, 
  massive 
  plates. 
  Basals 
  small, 
  and 
  oonoealed 
  by 
  the 
  column. 
  

   Bubradials 
  extending 
  nearly 
  half 
  their 
  length 
  beyond 
  the 
  columnar 
  

   Facet, 
  forming 
  by 
  themselves 
  a 
  low, 
  pentagona] 
  oup. 
  Primary 
  radi- 
  

   als 
  three 
  in 
  each 
  ray, 
  gradually 
  widening 
  from 
  the 
  Brai 
  to 
  the 
  third, 
  

   which 
  is 
  an 
  axillary 
  plate, 
  giving 
  support 
  to 
  the 
  fin! 
  plates 
  of 
  the 
  

   indarj 
  radials 
  three, 
  more 
  than 
  half 
  as 
  wide 
  as 
  

  

  the 
  first, 
  the 
  lust 
  supporting 
  the 
  firsl 
  plates 
  in 
  the 
  Tertiar] 
  

  

  Ahove 
  the 
  secondary 
  w 
  me 
  of 
  the 
  arms, 
  if 
  not 
  all, 
  divide 
  

  

  d 
  on 
  the 
  tifth 
  plate, 
  above 
  whioh 
  the; 
  become 
  quite 
  standi 
  

  

  no 
  the 
  anal 
  side 
  of 
  the 
  specimen 
  two 
  series 
  of 
  plates 
  are 
  . 
  

  

  I. 
  I'll- 
  first 
  oni 
  i:il 
  in 
  form. 
  :uid 
  rests 
  between 
  the 
  

  

  uppt 
  i 
  of 
  two 
  of 
  the 
  Bubradials. 
  In 
  the 
  next 
  

  

  h 
  ahout 
  half 
  us 
  large 
  ;is 
  the 
  first, 
  the 
  middli 
  

   I 
  reotly 
  apon 
  it. 
  and 
  the 
  otl 
  d 
  the 
  upper 
  

  

  flu 
  first 
  anals 
  and 
  the 
  adiac.nl 
  first 
  radials. 
  Above 
  this 
  

  

  