﻿10 
  SUPPLEMENT 
  TO 
  THE 
  EXTINCT 
  BATRACHIA 
  

  

  genera, 
  for 
  no 
  trace 
  of 
  them 
  can 
  be 
  seen 
  in 
  two 
  specimens 
  and 
  their 
  reverses 
  of 
  S. 
  

   digitata 
  and 
  8. 
  longipes, 
  though 
  the 
  thoracic 
  region 
  is 
  well 
  preserved 
  in 
  both. 
  

  

  Unfortunately 
  the 
  structure 
  of 
  the 
  cranium 
  in 
  this 
  genns 
  is 
  quite 
  unknown, 
  the 
  

   part 
  preserved. 
  in 
  8. 
  longipes 
  being 
  too 
  much 
  injured 
  to 
  furnish 
  characters. 
  The 
  only 
  

   genus 
  with 
  which 
  it 
  can 
  be 
  compared 
  in 
  the 
  structure 
  of 
  the 
  skeleton 
  remaining, 
  is 
  

   Tuditanus, 
  and 
  it 
  is 
  possible 
  that 
  some 
  of 
  the 
  species 
  of 
  the 
  latter 
  in 
  which 
  the 
  

   cranium 
  only 
  is 
  known, 
  should 
  be 
  placed 
  in 
  Sauropleum. 
  The 
  type 
  however, 
  T. 
  

   brevirostris, 
  has 
  thoracic 
  shields 
  and 
  very 
  weak 
  limbs, 
  so 
  that 
  the 
  genera 
  are 
  well 
  

   distinguished. 
  As 
  to 
  species, 
  the 
  only 
  one 
  of 
  Tuditanus 
  which 
  could, 
  by 
  reason 
  of 
  

   size, 
  belong 
  to 
  either 
  of 
  those 
  of 
  8auropleura, 
  is 
  T. 
  mordax 
  ; 
  the 
  T. 
  radiatus 
  and 
  T. 
  

   obtusus 
  being 
  larger 
  than 
  either 
  8. 
  digitata 
  or 
  8. 
  longipes. 
  

  

  The 
  vertebras 
  are 
  not 
  elongate 
  and 
  the 
  ribs 
  are 
  quite 
  well 
  developed. 
  In 
  8. 
  

   longipes 
  the 
  neural 
  spines 
  of 
  the 
  dorsal 
  vertebras 
  are 
  vertical 
  laminge, 
  subquadrate 
  in 
  

   outline. 
  The 
  tail 
  is 
  elongate, 
  being 
  proportioned 
  in 
  8. 
  longipes 
  much 
  as 
  in 
  lizards 
  of 
  

   typical 
  forms. 
  Of 
  scapular 
  arch 
  I 
  can 
  find 
  nothing, 
  but 
  in 
  8. 
  longipes 
  the 
  iliac 
  bones 
  

   are 
  preserved. 
  They 
  are 
  short 
  flat 
  rods 
  slightly 
  narrowing 
  towards 
  the 
  base, 
  which 
  

   is 
  a 
  transverse 
  expansion, 
  with 
  the 
  distal 
  margin 
  presenting 
  two 
  faces 
  separated 
  by 
  an 
  

   angle. 
  The 
  limbs 
  are 
  well 
  developed, 
  the 
  ulna 
  and 
  radius 
  separate. 
  In 
  8. 
  digitata 
  

   there 
  is 
  no 
  osseous 
  carpus. 
  

  

  The 
  sizes 
  of 
  the 
  species 
  known 
  are 
  about 
  that 
  of 
  our 
  medium 
  and 
  larger 
  lizards. 
  

   The 
  8. 
  digitata 
  is 
  the 
  larger, 
  and 
  of 
  shorter 
  body 
  and 
  more 
  robust 
  limbs 
  than 
  the 
  8. 
  

   longipes. 
  While 
  the 
  former 
  has 
  thirteen 
  pairs 
  of 
  ribs, 
  the 
  latter 
  has 
  nineteen, 
  perhaps 
  

   twenty-one. 
  

  

  The 
  dermal 
  abdominal 
  rods 
  are 
  arranged 
  en 
  chevron 
  with 
  the 
  angle 
  anterior, 
  and 
  

   are 
  separated 
  by 
  interspaces. 
  

  

  SAUROPLELTRA 
  LONGIPES, 
  Cope, 
  Sp. 
  Nov. 
  

  

  Body 
  long, 
  slender, 
  with 
  long 
  neck 
  and 
  long 
  tail, 
  ribs 
  19 
  or 
  21 
  pairs, 
  moderately 
  curved, 
  the 
  anterior 
  stouter, 
  

   and 
  with 
  widened 
  extremities, 
  the 
  posterior 
  slender, 
  and 
  drawn 
  out 
  to 
  a 
  fine 
  point. 
  Dorsal 
  vertebras 
  1.5 
  times 
  long 
  

   as 
  wide, 
  with 
  well 
  developed 
  neural 
  spines. 
  These 
  are 
  rather 
  narrower 
  than 
  high, 
  the 
  height 
  about 
  equalling 
  tbo 
  

   length 
  of 
  the 
  centrum. 
  They 
  are 
  rugose 
  with 
  small 
  tubercles 
  which 
  are 
  sometimes 
  confluent 
  into 
  ridges. 
  

  

  The 
  humerus 
  is 
  longer 
  than 
  the 
  ulna 
  and 
  radius, 
  which 
  are 
  of 
  equal 
  lengths, 
  that 
  is 
  about 
  as 
  long 
  as 
  four 
  

   dorsal 
  vertebrae. 
  The 
  ulna 
  and 
  radius 
  are 
  not 
  widely 
  separated, 
  and 
  expand 
  at 
  the 
  carpal 
  region. 
  The 
  humerus 
  is 
  

   rather 
  more 
  slender, 
  and 
  is 
  distally 
  expanded. 
  The 
  digits 
  are 
  not 
  all 
  preserved. 
  One 
  metacarpal 
  is 
  seen 
  at 
  an 
  

   interval 
  beyond 
  the 
  forearm, 
  and 
  series 
  of 
  phalanges 
  extend 
  beyond 
  the 
  metacarpal. 
  The 
  latter 
  is 
  about 
  half 
  as 
  

   long 
  as 
  the 
  forearm, 
  and 
  a 
  little 
  larger 
  than 
  the 
  first 
  phalange, 
  which 
  is, 
  like 
  the 
  former, 
  very 
  slender. 
  Parts 
  of 
  two 
  

   or 
  three 
  phalanges 
  of 
  perhaps 
  other 
  digits 
  appear 
  along 
  side, 
  as 
  though 
  turned 
  backwards. 
  The 
  femur 
  is 
  about 
  as 
  

   long 
  as 
  tlie 
  humerus, 
  equalling 
  six 
  and 
  three 
  quarter 
  posterior 
  dorsal 
  vertebras. 
  Proximally 
  it 
  is 
  enlarged 
  gradually 
  

   and 
  terminates 
  regularly 
  so 
  far 
  as 
  can 
  be 
  seen, 
  as 
  it 
  is 
  partially 
  concealed 
  beneath 
  the 
  distal 
  extremity 
  of 
  the 
  ilium. 
  

  

  