﻿48 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  C7 
  

  

  PTEROTOCRINUS 
  CORONARIUS 
  Lyon 
  

  

  Plate 
  14, 
  figs. 
  l-3« 
  

  

  Asterocrinus 
  (?) 
  coronarius 
  Lyon, 
  Geol. 
  Surv. 
  Kentucky, 
  vol. 
  3, 
  1857, 
  p. 
  

   476, 
  pi. 
  1, 
  figs. 
  1, 
  la. 
  

  

  Pterotocrinus 
  coronarius 
  Lyon 
  and 
  Casseday, 
  Proc. 
  Amer. 
  Acad. 
  Arts 
  and 
  

   Sci., 
  vol. 
  4, 
  1859, 
  p. 
  302. 
  — 
  Waciismuth 
  and 
  Springer, 
  Rev. 
  Pal., 
  pt. 
  2, 
  

   1881, 
  p. 
  91 
  ; 
  North 
  Amer. 
  Crin. 
  Cam., 
  1897, 
  p. 
  795, 
  pi. 
  79, 
  figs, 
  la, 
  o.— 
  

   H. 
  E. 
  Wieson, 
  Journ. 
  Geol., 
  vol. 
  34, 
  1916, 
  pi. 
  3, 
  fig. 
  11 
  ; 
  note 
  by 
  F. 
  S. 
  

   on 
  p. 
  492. 
  

  

  This 
  species 
  has 
  a 
  singular 
  history. 
  As 
  originally 
  described 
  by 
  

   Lyon, 
  the 
  type 
  consisted 
  of 
  the 
  tegmen 
  only, 
  being 
  as 
  stated 
  by 
  him 
  

   a 
  "unique 
  crinoidal 
  fragment," 
  having 
  "neither 
  basal, 
  radial 
  nor 
  

   arm 
  plates." 
  When 
  Wachsmuth 
  and 
  Springer 
  borrowed 
  the 
  type 
  for 
  

   description 
  in 
  the 
  Camerata 
  monograph 
  we 
  received 
  the 
  same 
  speci- 
  

   men, 
  and 
  thus 
  figured 
  only 
  the 
  tegmen 
  with 
  the 
  ponderous 
  wing 
  

   plates. 
  While 
  that 
  work 
  was 
  going 
  through 
  the 
  press 
  I 
  discovered 
  

   in 
  the 
  Museum 
  of 
  Comparative 
  Zoology 
  at 
  Harvard 
  a 
  lead 
  cast 
  of 
  

   what 
  was 
  apparently 
  the 
  same 
  specimen, 
  but 
  with 
  the 
  complete 
  dor- 
  

   sal 
  cup 
  attached. 
  No 
  explanation 
  of 
  this 
  fact 
  was 
  to 
  be 
  found, 
  but 
  

   I 
  made 
  a 
  record 
  of 
  it 
  in 
  a 
  footnote 
  to 
  page 
  795 
  of 
  the 
  monograph. 
  

   When 
  in 
  1903 
  I 
  acquired 
  the 
  collection 
  of 
  the 
  deceased 
  Col. 
  Sydney 
  

   S. 
  Lyon, 
  I 
  found 
  associated 
  with 
  the 
  tegmen 
  constituting 
  the 
  pub- 
  

   lished 
  type 
  the 
  dorsal 
  cup 
  reproduced 
  in 
  the 
  cast 
  ; 
  the 
  two 
  parts 
  were 
  

   separated, 
  but 
  I 
  have 
  again 
  united 
  them 
  in 
  the 
  position 
  shown 
  by 
  the 
  

   cast. 
  

  

  I 
  was 
  informed 
  by 
  Colonel 
  Lyon's 
  son, 
  Victor 
  W. 
  Lyon, 
  himself 
  an 
  

   experienced 
  collector, 
  that 
  the 
  two 
  pieces 
  were 
  found 
  together 
  but 
  

   detached 
  ; 
  and 
  from 
  their 
  color, 
  size 
  and 
  lithological 
  appearance 
  there 
  

   is 
  every 
  reason 
  to 
  believe 
  that 
  they 
  pertained 
  to 
  the 
  same 
  individual. 
  

   Mr. 
  Lyon 
  was 
  of 
  the 
  opinion 
  that 
  subsequent 
  to 
  the 
  description 
  in 
  the 
  

   Kentucky 
  Report 
  his 
  father 
  became 
  convinced 
  that 
  the 
  fragments 
  

   belonged 
  together 
  and 
  accordingly 
  united 
  them, 
  made 
  and 
  distributed 
  

   the 
  casts 
  among 
  his 
  correspondents 
  with 
  the 
  intention 
  of 
  amending 
  

   the 
  description 
  when 
  opportunity 
  offered. 
  This 
  was 
  prevented 
  by 
  

   the 
  intervention 
  of 
  the 
  Civil 
  War 
  through 
  which 
  he 
  was 
  an 
  officer 
  in 
  

   the 
  Federal 
  army; 
  the 
  specimens 
  were 
  afterwards 
  separated 
  during 
  

   one 
  of 
  the 
  periodic 
  inundations 
  of 
  the 
  Ohio 
  River 
  by 
  which 
  the 
  col- 
  

   lection 
  was 
  submerged. 
  The 
  fact 
  that 
  they 
  belong 
  to 
  the 
  same 
  

   species 
  is 
  proved 
  beyond 
  question 
  by 
  another 
  specimen 
  found 
  asso- 
  

   ciated 
  with 
  them 
  having 
  the 
  same 
  dorsal 
  cup 
  with 
  one 
  of 
  the 
  wing 
  

   plates 
  attached 
  (pi. 
  14, 
  fig. 
  2). 
  Along 
  with 
  these, 
  all 
  from 
  the 
  same 
  

   locality, 
  is 
  a 
  third 
  good 
  cup 
  and 
  two 
  other 
  fragments 
  — 
  so 
  that 
  there 
  

   is 
  now 
  in 
  hand 
  abundant 
  material 
  for 
  the 
  elucidation 
  of 
  the 
  species.. 
  

   As 
  now 
  understood, 
  the 
  structure 
  of 
  the 
  dorsal 
  cup 
  is 
  fully 
  as 
  anoma- 
  

   lous 
  as 
  that 
  of 
  the 
  tegmen, 
  presenting 
  a 
  wide 
  departure 
  from 
  all 
  other 
  

   species 
  of 
  the 
  genus. 
  

  

  