﻿AND 
  AYES 
  OF 
  NORTH 
  AMERICA. 
  153 
  

  

  Lines. 
  

  

  Width 
  costal 
  bone, 
  25. 
  

  

  Thickness 
  proximally, 
  3. 
  

  

  " 
  distally, 
  4.5 
  

  

  " 
  at 
  base 
  of 
  free 
  rib, 
  6. 
  

  

  Sulci 
  in 
  an 
  inch, 
  five. 
  

  

  Locality 
  — 
  The 
  upper 
  bed 
  of 
  Green 
  Sand 
  in 
  Monmouth 
  Co., 
  N. 
  J. 
  In 
  the 
  collection 
  of 
  0. 
  B. 
  Kinne, 
  Director 
  

   of 
  the 
  marl 
  pits 
  at 
  Squankum. 
  

  

  TRIOXYX 
  BUIBI, 
  Cope, 
  Sp. 
  Nov. 
  

  

  This 
  species 
  is 
  represented 
  by 
  numerous 
  costal 
  bones 
  in 
  a 
  more 
  or 
  less 
  fragmentary 
  condition. 
  They 
  resemble 
  

   somewhat 
  those 
  of 
  the 
  T. 
  pennatus. 
  There 
  are 
  narrow 
  transverse 
  ridges 
  extending 
  in 
  slightly 
  curved 
  lines 
  from 
  the 
  

   margins 
  to 
  a 
  distance 
  inward 
  on 
  the 
  costal 
  bones. 
  Near 
  the 
  middle 
  of 
  the 
  length 
  of 
  the 
  bone 
  they 
  are 
  interrupted 
  by 
  

   irregularities 
  and 
  cross-ridges, 
  producing 
  a 
  honey-comb 
  arrangement, 
  while 
  more 
  distally 
  the 
  ridges 
  and 
  included 
  

   grooves 
  are 
  more 
  continuous. 
  Five 
  intervals 
  are 
  included 
  in 
  six 
  lines. 
  Thickness 
  of 
  the 
  costal 
  bone 
  at 
  lateral 
  suture, 
  

   2.2 
  lines. 
  

  

  From 
  the 
  Miocene, 
  nDar 
  Mt. 
  Olive, 
  Duplin 
  County, 
  N. 
  C. 
  Obtained 
  by 
  the 
  Geological 
  Survey 
  of 
  North 
  Carolina 
  

   by 
  Prof. 
  W. 
  C. 
  Kerr, 
  Director. 
  Dedicated 
  to 
  Dr. 
  D. 
  H. 
  Buie, 
  of 
  Wilmington, 
  N. 
  C, 
  a 
  geologist 
  and 
  naturalist. 
  

  

  TRIONYX 
  PRISCTJS, 
  Leidy. 
  

   Proc. 
  Acad. 
  Nat. 
  Sci., 
  1852, 
  p. 
  329. 
  Cretaceous 
  Keptiles, 
  Tab. 
  

   From 
  the 
  Cretaceous 
  green-sand 
  of 
  New 
  Jersey. 
  

  

  TRIONYX 
  LIMA, 
  Cope. 
  

   Proc. 
  Acad. 
  Nat. 
  Sci., 
  Phila., 
  18G9, 
  p. 
  12. 
  

  

  This 
  species 
  is 
  known 
  by 
  a 
  costal 
  bone, 
  of 
  which 
  the 
  proximal 
  part 
  has 
  been 
  broken 
  away. 
  It 
  is 
  the 
  largest 
  

   of 
  our 
  Trionyches. 
  

  

  The 
  distal 
  end 
  of 
  the 
  bone 
  is 
  oblique 
  and 
  slightly 
  concave; 
  it 
  is 
  remarkably 
  thick. 
  The 
  superficial 
  sculp- 
  

   ture 
  is 
  its 
  strongest 
  mark. 
  This 
  consists 
  of 
  numerous 
  narrow, 
  much 
  elevated 
  transverse 
  ridges, 
  which 
  are 
  finest 
  

   and 
  most 
  closely 
  arranged 
  distally. 
  They 
  are 
  irregular 
  in 
  their 
  course, 
  presenting 
  occasional 
  short 
  interruptions, 
  

   and 
  rarely 
  inosculate. 
  The 
  irregularities 
  are 
  most 
  abundant 
  proximally. 
  The 
  distance 
  between 
  the 
  ridges 
  is 
  greater 
  

   than 
  the 
  width 
  of 
  the 
  same. 
  There 
  are 
  five 
  in 
  a 
  half 
  inch 
  distally, 
  and 
  4.5 
  proximally. 
  Probably 
  on 
  the 
  proximal 
  

   extremity 
  of 
  the 
  costal 
  bones 
  the 
  ridges 
  are 
  much 
  more 
  irregular, 
  as 
  they 
  are 
  generally 
  less 
  longitudinal 
  there 
  than 
  

   distally 
  in 
  all 
  our 
  species. 
  

  

  Thickness 
  at 
  middle, 
  distally, 
  9 
  lines; 
  thickness 
  at 
  fractured 
  edge, 
  proximally, 
  6 
  lines. 
  

  

  From 
  the 
  Miocene 
  marl 
  of 
  Cumberland 
  Co., 
  N. 
  J. 
  Found 
  by 
  John 
  Hummel. 
  

  

  CHELONIIDAE. 
  

  

  No 
  species 
  referable 
  with 
  certainty 
  to 
  the 
  present 
  family, 
  have 
  been 
  found 
  in 
  North 
  American 
  beds 
  older 
  than 
  

   the 
  Tertiaries. 
  

  

  CHELOXE 
  GRANDAEYA, 
  Leidy. 
  

  

  Proc. 
  Acad. 
  Nat. 
  Sci., 
  Phila., 
  1801, 
  p. 
  303. 
  

  

  This 
  large 
  species 
  was 
  originally 
  characterized 
  from 
  a 
  number 
  of 
  vertebral 
  bones. 
  Since 
  then 
  more 
  abundant 
  

   material 
  has 
  enabled 
  me 
  to 
  ascertain 
  its 
  characters 
  more 
  precisely. 
  

   AMERICA. 
  PHILO. 
  SOC. 
  — 
  VOL. 
  XIV. 
  39 
  

  

  