﻿AND 
  AVES 
  OF 
  NORTH 
  AMERICA. 
  79 
  

  

  round 
  cup 
  with 
  thick 
  edges. 
  In 
  the 
  cervicals 
  the 
  hypapophyses 
  are 
  represented 
  by 
  rudimental 
  elevations 
  separated 
  

   by 
  a 
  space, 
  except 
  on 
  the 
  third, 
  where 
  there 
  is 
  the 
  usual 
  anterior 
  cross 
  ridge, 
  followed 
  by 
  a 
  concavity. 
  I 
  refer 
  here 
  a 
  

   dorsal, 
  kindly 
  lent 
  me 
  by 
  Prof. 
  Marsh, 
  where 
  the 
  cup 
  is 
  more 
  transverse 
  oval 
  than 
  in 
  T. 
  obscurus. 
  

  

  The 
  lumbars 
  from 
  Bamesboro 
  are 
  characterized 
  by 
  a 
  form 
  more 
  slender 
  than 
  those 
  of 
  the 
  T. 
  tenebrosus, 
  more 
  

   nearly 
  resembling 
  some 
  from 
  the 
  series 
  of 
  T. 
  obscurus. 
  Measurements 
  of 
  : 
  

  

  In. 
  

  

  Fifth 
  cervical 
  : 
  length 
  to 
  shoulder, 
  21 
  . 
  

  

  " 
  posterior 
  angle 
  parapophysis, 
  15. 
  

  

  " 
  anterior 
  " 
  " 
  6. 
  

  

  width 
  to 
  posterior 
  angle 
  parapophyses, 
  19.25 
  

  

  " 
  behind 
  the 
  parapophyses, 
  13.25 
  

  

  " 
  of 
  cup 
  above, 
  15. 
  

  

  " 
  vertical 
  diameter 
  cup, 
  15.25 
  

  

  " 
  neural 
  canal, 
  8. 
  

  

  Lumbar 
  : 
  length 
  to 
  shoulder, 
  24. 
  

  

  vertical 
  diameter 
  cup, 
  18. 
  

  

  width 
  of 
  " 
  " 
  17. 
  

  

  " 
  neural 
  canal, 
  5. 
  

  

  " 
  basis 
  of 
  neural 
  arch 
  in 
  front, 
  15. 
  

  

  Specimens 
  of 
  an 
  adult 
  from 
  the 
  pits 
  of 
  the 
  West 
  Jersey 
  Marl 
  Co., 
  near 
  Bamesboro, 
  Gloucester 
  County. 
  

  

  THORACOSAURUS, 
  Leidy. 
  

   Cretaceous 
  Reptiles, 
  Smithson. 
  Contrib., 
  XIV., 
  5. 
  Pr. 
  Ac. 
  N. 
  Sci., 
  Phila., 
  1852, 
  35. 
  

  

  This 
  genus 
  adds 
  to 
  the 
  characters 
  of 
  Holops, 
  a 
  pair 
  of 
  large 
  prefrontal 
  foramina 
  

   similar 
  to 
  those 
  characteristic 
  of 
  Teleosaurus, 
  and 
  Plesiosaurus. 
  The 
  other 
  cranial 
  char- 
  

   acters, 
  as 
  well 
  as 
  the 
  vertebral, 
  are 
  very 
  different 
  from 
  those 
  of 
  Teleosaurus, 
  which 
  is 
  

   amphicoelian, 
  and 
  are 
  rather 
  those 
  of 
  the 
  existing 
  Gavialis. 
  The 
  teeth 
  and 
  cervical 
  

   vertebrae, 
  however, 
  differ 
  from 
  those 
  of 
  the 
  latter 
  genus. 
  

  

  What 
  is 
  not 
  seen 
  in 
  Gavialis 
  or 
  Holops 
  is 
  the 
  character 
  here 
  presented, 
  of 
  a 
  strong 
  

   septum 
  dividing 
  the 
  posterior 
  nares 
  most 
  completely; 
  the 
  latter 
  open 
  inferiorly 
  and 
  oppo- 
  

   site 
  the 
  hinder 
  part 
  of 
  the 
  crotaphite 
  foramina. 
  

  

  A 
  species, 
  the 
  T. 
  macrorhynchus, 
  occurs 
  in 
  the 
  cretaceous 
  of 
  France, 
  as 
  observed 
  by 
  

   Leidy. 
  

  

  THORACOSAURUS 
  NEOCAESARIENSIS, 
  Dekay. 
  

  

  Leidy. 
  Smithsonian 
  Contributions, 
  XIV., 
  18G5, 
  5. 
  Tab. 
  I. 
  

  

  ffwjai 
  Dekay 
  Ann. 
  Lye. 
  N. 
  York, 
  1833, 
  156. 
  Tab. 
  III., 
  fig. 
  7-10. 
  Gavialis 
  neocaesariensis 
  Dekay. 
  Zool. 
  New 
  

   York, 
  1842, 
  pt. 
  III., 
  1844, 
  82. 
  Crocodilus 
  s. 
  Gavialis 
  clavirostis 
  Morton. 
  Proceed. 
  Acad. 
  Nat. 
  Sci., 
  Phila., 
  1S44, 
  82. 
  

   Giebel 
  Fauna 
  v. 
  Vorvelt, 
  1847, 
  122. 
  Crocodilus 
  oasifissus 
  Owen. 
  Journ. 
  Geol. 
  Soc, 
  London, 
  1849, 
  381, 
  Tab. 
  X., 
  

   f. 
  1, 
  2. 
  Palaeontology, 
  1860, 
  277. 
  Pictet 
  Traite 
  de 
  Palaeontolgie 
  I., 
  1853, 
  482. 
  Crocodilus 
  dekayi 
  Leidy. 
  Journ. 
  

   Acad. 
  Nat. 
  Sci., 
  II., 
  135. 
  Sphenosaurus 
  Agassiz. 
  Proceed. 
  Ae. 
  N. 
  Sci., 
  Phila., 
  1849, 
  160. 
  Thoracosaurus 
  grandis 
  

   Leidy. 
  Proc. 
  A. 
  N. 
  Sci., 
  Phila., 
  1852, 
  35. 
  

  

  Cretaceous 
  limestone 
  of 
  Vincentown, 
  Blackwoodtown, 
  and 
  Big 
  Timber 
  Creek 
  ; 
  sandstone 
  of 
  Navesink 
  ; 
  green- 
  

   sand 
  of 
  Blackwoodtown, 
  Bamesboro, 
  and 
  Monmouth 
  County, 
  New 
  Jersey. 
  

  

  