﻿H. 
  G. 
  SEELEY 
  ON 
  A 
  DINOSAURIAN 
  CORACOID. 
  

  

  36^ 
  

  

  37. 
  On 
  a 
  remarkable 
  Dinosaurian 
  Coracoid 
  from 
  the 
  Wealden 
  of 
  

   Brook 
  in 
  the 
  Isle 
  of 
  Wight, 
  preserved 
  in 
  the 
  Woodwardian 
  

   Museum 
  of 
  the 
  University 
  of 
  Cambridge, 
  probably 
  referable 
  to 
  

   Ornithopsis. 
  By 
  H. 
  G. 
  Seeley, 
  Esq., 
  F.B,.S., 
  F.G.S., 
  Professor 
  

   of 
  Geography 
  in 
  King's 
  College, 
  London. 
  (Kead 
  May 
  24, 
  1882.) 
  

  

  Many 
  years 
  ago 
  (about 
  1866) 
  Mr. 
  Henry 
  Keeping 
  obtained 
  from 
  

   the 
  cliff 
  at 
  Brook, 
  midway 
  between 
  the 
  fossil 
  forest 
  at 
  Brook 
  Point 
  

   and 
  Brook 
  Chine, 
  at 
  about 
  10 
  feet 
  above 
  high-water 
  mark, 
  the 
  

   largest 
  Dinosaurian 
  coracoid 
  which 
  it 
  has 
  been 
  my 
  fortune 
  to 
  ex- 
  

   amine. 
  It 
  differs 
  in 
  important 
  generic 
  characters 
  from 
  the 
  coracoid 
  

   of 
  Iguanodon 
  ; 
  and 
  the 
  only 
  genus 
  hitherto 
  described 
  to 
  which 
  it 
  is 
  

   likely 
  to 
  belong, 
  is 
  Ornithopsis, 
  a 
  Saurian 
  to 
  which 
  Mr. 
  Hulke 
  has 
  

   already 
  referred 
  many 
  bones 
  of 
  gigantic 
  size. 
  

  

  Fig. 
  1. 
  — 
  External 
  View 
  of 
  the 
  Dinosaurian 
  Coracoid, 
  

   one 
  sixth 
  natural 
  size. 
  

  

  a. 
  Humeral 
  articulation. 
  

  

  c. 
  Median 
  thickening. 
  

  

  e. 
  Termination 
  of 
  inferior 
  ridge. 
  

  

  b. 
  Scapular 
  margin. 
  

   d. 
  Coracoid 
  foramen. 
  

  

  The 
  specimen 
  is 
  from 
  the 
  right 
  side, 
  and 
  perfect, 
  except 
  that 
  a 
  

   small 
  portion 
  of 
  the 
  thin 
  anterior 
  margin 
  has 
  been 
  broken 
  away. 
  

   The 
  external 
  surface 
  of 
  the 
  bone 
  is 
  irregular, 
  but 
  somewhat 
  convex 
  

   from 
  front 
  to 
  back 
  ; 
  the 
  visceral 
  surface 
  is 
  similarly 
  concave. 
  The 
  

  

  