﻿136 
  

  

  J. 
  W. 
  HULKE 
  ON 
  SOME 
  IGTJANODON-EEMAINS. 
  

  

  Fig. 
  1. 
  — 
  Restoration 
  of 
  the 
  Left 
  Hind 
  Limb 
  o/Iguanodon 
  Seelyi. 
  

   (About 
  ^ 
  nat. 
  size.) 
  

  

  centim. 
  (about 
  4 
  feet). 
  Its 
  greatest 
  depth, 
  from 
  the 
  dorsal 
  to 
  the 
  

   ventral 
  border 
  behind 
  the 
  acetabulum 
  through 
  the 
  ischial 
  process, 
  is 
  

   33 
  centim 
  (13 
  in.). 
  The 
  dorsal 
  border 
  viewed 
  from 
  above 
  is 
  sinu- 
  

   ous 
  ; 
  it 
  bends 
  outwards 
  above 
  the 
  ischial 
  process, 
  and 
  again 
  in 
  the 
  

   preacetabular 
  process. 
  In 
  a 
  side 
  view 
  it 
  is 
  seen 
  to 
  rise 
  slightly 
  from 
  

   the 
  last-named 
  process 
  to 
  above 
  the 
  ischial 
  process, 
  its 
  highest 
  

   point, 
  whence 
  it 
  slopes 
  uniformly 
  downwards 
  to 
  the 
  posterior 
  end 
  of 
  

   the 
  bone. 
  The 
  ventral 
  border 
  behind 
  the 
  acetabulum 
  is 
  straight 
  ; 
  it 
  

   is 
  longitudinally 
  grooved. 
  The 
  preacetabular 
  process 
  {pa) 
  is 
  rela- 
  

   tively 
  short, 
  its 
  length 
  being 
  less 
  than 
  that 
  of 
  the 
  postacetabular 
  part 
  

   of 
  the 
  bone 
  ; 
  it 
  contracts 
  rapidly 
  from 
  its 
  stout 
  base, 
  and 
  for 
  more 
  

   than 
  half 
  its 
  length 
  it 
  is 
  much 
  flattened. 
  Its 
  cross-section 
  at 
  10 
  

   centim. 
  (4 
  in.) 
  from 
  its 
  free 
  end 
  is 
  an 
  oval 
  figure 
  the 
  diameters 
  of 
  

   which 
  are 
  3f 
  centim. 
  (1-J- 
  in.) 
  and 
  11 
  centim. 
  (4J 
  in.). 
  The 
  chord 
  

   of 
  the 
  acetabular 
  arc 
  is 
  23 
  centim. 
  (9 
  in.). 
  The 
  pubic 
  process 
  

   {p) 
  is 
  angular 
  ; 
  it 
  juts 
  downwards 
  and 
  forwards. 
  The 
  ischial 
  pro- 
  

   cess 
  (t) 
  is 
  a 
  stout 
  low 
  swelling. 
  The 
  outer 
  surface 
  of 
  the 
  ilium 
  is 
  

  

  