﻿Plate 
  IS 
  

  

  All 
  figures 
  natural 
  size 
  

  

  Page 
  

   CULMICRINUS 
  ELEGANS 
  (Wachsmuth 
  and 
  Springer) 
  74 
  

  

  Fig. 
  1. 
  Anterior 
  view 
  of 
  crown, 
  with 
  ventral 
  sac 
  to 
  nearly 
  its 
  full 
  length, 
  

   aixl 
  anal 
  opening 
  at 
  the 
  base; 
  arms 
  with 
  about 
  10 
  IBr. 
  

   la. 
  Posterior 
  view 
  of 
  same, 
  showing 
  arms 
  probably 
  extending 
  beyond 
  

   the 
  sac. 
  

   Upper 
  Chester; 
  Sloan's 
  Valley, 
  Kentucky. 
  

   Fig. 
  2. 
  (Omitted.) 
  

  

  CULMICRINUS 
  MISSOURIENSIS 
  (Shumard) 
  74 
  

  

  Fig. 
  3. 
  Anterior 
  view 
  of 
  crown, 
  showing 
  full 
  length 
  of 
  sac 
  with 
  anal 
  

   opening 
  at 
  base. 
  

  

  St. 
  Louis 
  limestone; 
  St. 
  Louis. 
  Missouri. 
  

  

  ACROCRINUS 
  AMPHORA 
  Wachsmuth 
  and 
  Springer_ 
  in 
  

  

  Fig. 
  4. 
  Lateral 
  view 
  of 
  crown, 
  with 
  calyx 
  exposed 
  by 
  removal 
  of 
  part 
  of 
  

   recumbent 
  arms: 
  to 
  show 
  longitudinal 
  grooves 
  made 
  by 
  pres- 
  

   sure 
  of 
  arms 
  in 
  their 
  recumbent 
  position. 
  (See 
  also 
  plates 
  !• 
  

   and 
  11". 
  I 
  

  

  Lower 
  Chester: 
  Huntsville, 
  Alabama. 
  

  

  SIPHONOCRINUS 
  ARMOSUS 
  I 
  Mc< 
  Miesney 
  I 
  66 
  

  

  Fig. 
  5. 
  Internal 
  cast, 
  with 
  plates 
  of 
  test 
  exfoliated 
  or 
  removed 
  by 
  chemi- 
  

   cal 
  action 
  : 
  showing 
  the 
  anal 
  tube 
  bent 
  completely 
  over 
  the 
  

   oral 
  portions 
  of 
  the 
  viscera, 
  so 
  as 
  to 
  emerge 
  at 
  the 
  anterior 
  

   side 
  below 
  the 
  level 
  of 
  the 
  arm 
  bases. 
  After 
  Wachsmuth 
  and 
  

   Springer, 
  North 
  Amer. 
  Crin. 
  Cam., 
  pi. 
  lit. 
  

  

  Niagaran, 
  Racine 
  formation 
  ; 
  Milwaukee. 
  Wisconsin. 
  

  

  12.-, 
  

  

  