﻿122— 
  J 
  THE 
  EXTINCT 
  BATRACHIA, 
  REFTILIA 
  

  

  side 
  of 
  the 
  centrum, 
  which 
  is 
  below 
  the 
  middle 
  line. 
  It 
  holds 
  the 
  same 
  position 
  in 
  the 
  thirty-sixth 
  in 
  H. 
  foulkei, 
  but 
  

  

  is 
  above 
  the 
  middle 
  in 
  the 
  thirtieth 
  and 
  those 
  anterior. 
  

  

  Measurement, 
  In. 
  Lin. 
  

  

  Depth 
  centrum 
  to 
  summit 
  chevron 
  articulation, 
  5 
  

  

  do. 
  from 
  neural 
  canal 
  without 
  chevron 
  faoe, 
  4. 
  

  

  Greatest 
  width 
  do., 
  4. 
  9 
  

  

  Length 
  centrum, 
  4 
  3 
  

  

  do. 
  neurapophysis, 
  2 
  6 
  

  

  Width 
  between 
  anterior 
  zygapophyses, 
  1 
  3 
  

  

  do. 
  of 
  arch 
  above, 
  1 
  6 
  

  

  do. 
  neural 
  canal, 
  10 
  

  

  Depth 
  do. 
  do., 
  10 
  

  

  do. 
  basis 
  neural 
  spine, 
  5 
  

  

  This 
  specimen 
  was 
  procured 
  from 
  the 
  marl 
  pit 
  of 
  W. 
  J. 
  Thompson, 
  Sampson 
  co., 
  N. 
  Carolina. 
  

  

  A 
  second 
  and 
  much 
  smaller 
  vertebra 
  from 
  the 
  pit 
  that 
  furnished 
  the 
  remains 
  of 
  Hypsibema 
  crassicauda, 
  belonged 
  

  

  to 
  a 
  third 
  individual, 
  and 
  possibly 
  to 
  this 
  species. 
  Its 
  proportions 
  would 
  point 
  to 
  a 
  position 
  near 
  the 
  end 
  of 
  the 
  tail, 
  

  

  and 
  its 
  form 
  is 
  less 
  elongate 
  and 
  compressed 
  than 
  those 
  in 
  that 
  position 
  in 
  H. 
  foulkei. 
  Its 
  neural 
  arch 
  is 
  not 
  coossi- 
  

  

  fied. 
  The 
  extremities 
  are 
  slightly 
  concave, 
  the 
  general 
  form 
  subquadrate. 
  

  

  Lines. 
  

  

  Length 
  of 
  centrum, 
  20.5 
  

  

  Diameter 
  extremity, 
  (vertical) 
  18. 
  

  

  " 
  " 
  (transverse) 
  21.5 
  

  

  " 
  middle, 
  " 
  15. 
  

  

  The 
  first 
  named 
  vertebra 
  pertained 
  to 
  an 
  immense 
  species, 
  perhaps 
  double 
  the 
  Hadrosaurus 
  foulkei 
  in 
  weight 
  and 
  

  

  bulk, 
  should 
  the 
  general 
  proportions 
  of 
  the 
  two 
  have 
  been 
  at 
  all 
  similar. 
  In 
  that 
  case 
  the 
  length 
  of 
  the 
  femur 
  would 
  

  

  be 
  sixty-two 
  and 
  a 
  quarter 
  inches. 
  It 
  will 
  remain 
  for 
  future 
  discovery 
  to 
  determine 
  whether 
  the 
  species 
  is 
  the 
  same 
  

  

  as 
  the 
  Ornithotarsus 
  immanis. 
  

  

  HADROSAURUS 
  MINOR, 
  Marsh. 
  

  

  Proceed. 
  Acad. 
  Nat. 
  Sciences, 
  Jan. 
  1870, 
  Nature 
  (London), 
  Jan. 
  1870. 
  

  

  This 
  species 
  is 
  represented 
  by 
  two 
  dorsal, 
  four 
  lumbar 
  and 
  a 
  caudal 
  vertebra;, 
  from 
  Barnesboro, 
  Gloucester 
  co., 
  

   N. 
  J., 
  and 
  another 
  dorsal 
  from 
  another 
  locality. 
  These 
  belonged 
  to 
  an 
  animal 
  of 
  about 
  half 
  the 
  size 
  of 
  the 
  H. 
  foulkei, 
  

   and 
  not 
  fully 
  grown, 
  excepting 
  the 
  last 
  mentioned, 
  which 
  belonged 
  to 
  an 
  adult. 
  The 
  dorsals 
  are 
  much 
  compressed, 
  

   and 
  slightly 
  concave 
  in 
  front 
  and 
  convex 
  behind; 
  the 
  inferior 
  surface 
  not 
  distinctly 
  keeled. 
  The 
  lumbar 
  is 
  short, 
  much 
  

   broader, 
  being 
  subdiscoid, 
  and 
  distinctly 
  convex 
  anteriorly 
  and 
  concave 
  behind: 
  below, 
  it 
  presents 
  a 
  narrow 
  promi- 
  

   nent 
  carina. 
  The 
  caudal 
  is 
  anterior 
  and 
  is 
  discoid 
  and 
  short; 
  the 
  diapophyses 
  with 
  neural 
  arch 
  are 
  lost, 
  not 
  having 
  

   been 
  coiJssified; 
  the 
  former 
  was 
  at 
  the 
  base 
  of 
  the 
  latter. 
  Articular 
  faces 
  nearly 
  plane. 
  Articular 
  surfaces 
  for 
  chev- 
  

   ron 
  bones 
  small. 
  Inferior 
  face 
  not 
  excavated. 
  

  

  The 
  upper 
  bed 
  of 
  Cretaceous 
  Green 
  Sand. 
  

  

  LAELAPS, 
  Cope. 
  

   LAELAPS 
  AQUILUNGUIS, 
  Cope. 
  

  

  Maxillary 
  bone. 
  The 
  form 
  of 
  the 
  maxillary 
  bone 
  described 
  on 
  page 
  100, 
  indicates 
  a 
  short 
  elevated 
  and 
  narrowed 
  

   muzzle, 
  as 
  in 
  Teratosaurus. 
  

  

  Ischia. 
  The 
  elements 
  described 
  on 
  p. 
  108 
  as 
  pubes, 
  are 
  probably 
  ischia. 
  As 
  in 
  Megadaetylus. 
  they 
  appear 
  to 
  

   have 
  been 
  directed 
  backwards, 
  and 
  to 
  have 
  been 
  in 
  close 
  contact 
  for 
  a 
  considerable 
  pari 
  of 
  their 
  length. 
  On 
  plate 
  X. 
  

   fig. 
  4, 
  the 
  surface 
  of 
  contact 
  or 
  symphysis, 
  is 
  represented 
  on 
  the 
  inferior 
  part, 
  of 
  the 
  distal 
  two-thirds 
  the 
  length. 
  The 
  

   anterior, 
  dilated 
  portions 
  diverge, 
  leaving 
  a 
  V-shaped 
  interval, 
  and 
  extend 
  to 
  the 
  acetabula. 
  This 
  union 
  of 
  the 
  ischia, 
  

   which 
  are 
  of 
  very 
  dense 
  structure, 
  furnished 
  some 
  support 
  for 
  the 
  animal 
  in 
  a 
  squatting 
  position, 
  as 
  is 
  indicated 
  for 
  

   some 
  of 
  the 
  species 
  of 
  the 
  Connecticut 
  Sandstone. 
  

  

  