﻿SKELETON. 
  * 
  45 
  

  

  A. 
  YertebrsB 
  opistbocoelous, 
  imbricate 
  and 
  com- 
  

   pletely 
  covering 
  the 
  spinal 
  cord 
  above; 
  

   autogenous 
  ossified 
  ribs 
  attached 
  to 
  the 
  

   anterior 
  diapophyses 
  ; 
  sacral 
  vertebra 
  with 
  

   dilated 
  diapophyses 
  overlapping 
  the 
  ilia; 
  

   urostyle 
  with 
  transverse 
  processes 
  at 
  the 
  

   base 
  ; 
  omosternum 
  cartilaginous 
  or 
  absent 
  ; 
  

   sternum 
  cartilaginous, 
  with 
  two 
  posteriorly 
  

   diverging 
  limbs 
  ; 
  eight 
  elements 
  in 
  the 
  

   carpus, 
  two 
  in 
  contact 
  with 
  radius-ulna 
  ; 
  

   four 
  distal 
  tarsal 
  elements 
  ; 
  long; 
  bones 
  with 
  

   cartilaginous 
  epiphyses 
  (DiscoGLOSsiDiE). 
  

  

  1. 
  Fronto-parietal 
  fontanelle 
  small, 
  covered 
  

  

  over 
  in 
  very 
  old 
  specimens 
  ; 
  palatines 
  

   present 
  ; 
  zygomatic 
  branch 
  of 
  squamosal 
  

   forming 
  a 
  suture 
  with 
  maxillary; 
  second 
  

   rib 
  with 
  posterior 
  process 
  ; 
  dorsal 
  vertebrse 
  

   with 
  a 
  strong 
  postero-median 
  neural 
  pro- 
  

   cess 
  ; 
  sacral 
  vertebra 
  with 
  moderately 
  

   dilated 
  diapophyses 
  and 
  two 
  condyles 
  for 
  

   urostyle 
  Discoglossus. 
  

  

  2. 
  Fronto-parietal 
  fontanelle 
  very 
  large 
  ; 
  pala- 
  

  

  tines 
  absent 
  ; 
  second 
  rib 
  with 
  posterior 
  

   process 
  ; 
  postero-median 
  neural 
  process 
  of 
  

   vertebra 
  absent 
  or 
  very 
  short 
  ; 
  sacral 
  ver- 
  

   tebra 
  with 
  very 
  strongly 
  dilated 
  diapo- 
  

   physes 
  and 
  a 
  single 
  condyle 
  for 
  urostyle. 
  

  

  Bomhinator. 
  

  

  Tibia 
  shorter 
  than 
  femur 
  . 
  . 
  . 
  B. 
  igneus. 
  

  

  Tibia 
  as 
  long 
  as 
  femur 
  . 
  . 
  . 
  B. 
  loaclujjpiis. 
  

  

  8. 
  Fronto-parietal 
  fontanelle 
  large 
  ; 
  pala- 
  

   tines 
  present 
  ; 
  a 
  ca^rtilaginous 
  supra- 
  

   orbital 
  ; 
  second 
  rib 
  without 
  process 
  ; 
  pos- 
  

   tero-median 
  neural 
  process 
  of 
  vertebrae 
  

   absent 
  or 
  very 
  short 
  ; 
  sacral 
  vertebra 
  with 
  

   strongly 
  dilated 
  diapophyses 
  and 
  two 
  

   condyles 
  for 
  urostyle 
  .... 
  Alytes, 
  

  

  Fronto-parietal 
  .bones 
  in 
  contact 
  only 
  quite 
  

   posteriorly, 
  embracing 
  a 
  very 
  large 
  sole- 
  

  

  