﻿54 
  Dr. 
  G. 
  Baur 
  on 
  the 
  

  

  exaggeration 
  of 
  that 
  found 
  in 
  the 
  existing 
  American 
  genus 
  

   Dermatemys 
  ; 
  and 
  since 
  the 
  general 
  contour 
  of 
  the 
  neural 
  

   shields 
  is 
  the 
  same 
  as 
  in 
  the 
  latter, 
  it 
  appears 
  probable, 
  

   although 
  the 
  evidence 
  is 
  not 
  conclusive, 
  that 
  Trachyaspis 
  is 
  

   an 
  allied 
  form. 
  

  

  Trachyaspis 
  hantoniensis, 
  sp. 
  nov. 
  

  

  A 
  marginal 
  in 
  the 
  Natural-History 
  Museum 
  (no. 
  R. 
  1443) 
  

   indicates 
  the 
  occurrence 
  in 
  the 
  Upper 
  Eocene 
  of 
  Hordwell 
  

   of 
  a 
  species 
  of 
  Trachyaspis, 
  which, 
  from 
  its 
  much 
  lower 
  

   geological 
  horizon, 
  is 
  probably 
  specifically 
  distinct 
  from 
  the 
  

   type 
  form 
  ; 
  while 
  its 
  distance 
  in 
  space 
  may 
  be 
  an 
  argument 
  

   for 
  its 
  distinctness 
  from 
  the 
  Egyptian 
  species. 
  

  

  Anostira 
  anylica, 
  sp. 
  nov. 
  

  

  An 
  anterior 
  marginal 
  and 
  a 
  xiphiplastral 
  from 
  Hordwell 
  

   preserved 
  in 
  the 
  Museum 
  (nos. 
  33198, 
  x, 
  y) 
  appear 
  to 
  indi- 
  

   cate 
  a 
  Chelonian 
  which 
  cannot 
  be 
  generically 
  distinguished 
  

   from 
  the 
  genus 
  Anostira, 
  Leidy, 
  of 
  which 
  the 
  type 
  species 
  is 
  

   from 
  the 
  Upper 
  Eocene 
  of 
  the 
  United 
  States. 
  The 
  larger 
  

   size 
  of 
  the 
  present 
  specimens 
  and 
  the 
  absence 
  of 
  distinct 
  

   radiation 
  in 
  the 
  sculpture 
  afford 
  a 
  specific 
  diagnosis 
  from 
  

   the 
  type. 
  

  

  Y1II. 
  — 
  The 
  Systematic 
  Position 
  oj 
  Meiolania, 
  Oicen. 
  

   By 
  Dr. 
  G. 
  Baur, 
  New 
  Haven, 
  Conn. 
  

  

  There 
  are 
  at 
  present 
  three 
  different 
  views 
  about 
  the 
  syste- 
  

   matic 
  position 
  of 
  Meiolania. 
  According 
  to 
  Sir 
  Richard 
  Owen* 
  

   Meiolania, 
  together 
  with 
  Megalania, 
  belongs 
  to 
  a 
  suborder 
  

   Ceratosauria, 
  with 
  affinities 
  with 
  both 
  the 
  " 
  orders 
  Chelonia 
  

   and 
  Sauria." 
  

  

  Prof. 
  Huxley 
  f 
  considers 
  the 
  animal 
  most 
  nearly 
  allied 
  to 
  

   the 
  Chelydridse 
  and 
  Platysternidge. 
  

  

  Mr. 
  Boulenger 
  } 
  comes 
  to 
  the 
  conclusion 
  that, 
  far 
  from 
  

  

  * 
  Owen, 
  R., 
  "On 
  parts 
  of 
  the 
  Skeleton 
  of 
  Meiolania 
  platyceps 
  (Owen)," 
  

   Phil. 
  Trans. 
  1888, 
  pp. 
  181-191, 
  pis. 
  xxxi.-xxxvii. 
  

  

  t 
  Huxley, 
  Thomas 
  H., 
  " 
  Preliminary 
  Note 
  on 
  the 
  Fossil 
  Remains 
  of 
  a 
  

   Chelonian 
  Reptile, 
  CeratocAelys 
  sthenurus, 
  from 
  Lord 
  Howe's 
  Island, 
  

   Australia," 
  Proc. 
  Roy. 
  Soc. 
  London, 
  vol. 
  xlii. 
  1887, 
  pp. 
  232-2:38. 
  

  

  % 
  Boulenger, 
  G. 
  A., 
  " 
  On 
  the 
  Systematic 
  Position 
  of 
  the 
  Genus 
  Mio- 
  

   lauia, 
  Owen,'' 
  Proc. 
  Zool. 
  Soc. 
  1887, 
  pp. 
  554-555. 
  

  

  