﻿208 
  

  

  PELOBATID^. 
  

  

  All 
  the 
  bones 
  of 
  the 
  upper 
  surface 
  are 
  closely 
  

   studded 
  with 
  granular 
  or 
  subconical 
  asperities. 
  A 
  

   further 
  important 
  difference 
  in 
  the 
  skull 
  of 
  this 
  species 
  

   compared 
  to 
  P. 
  fuscus 
  is 
  the 
  absence 
  of 
  the 
  extra- 
  

   ordinary 
  forward 
  prolongation 
  of 
  the 
  ethmoid 
  ; 
  this 
  

   bone 
  does 
  not 
  extend 
  beyond 
  the 
  nasals. 
  

  

  Duges, 
  basing 
  his 
  observations 
  on 
  this 
  species, 
  has 
  

   denied 
  the 
  fusion 
  of 
  the 
  sacral 
  vertebra 
  with 
  the 
  

   coccyx 
  described 
  by 
  Mertens 
  in 
  Pelohates 
  fuscus, 
  with 
  

   which 
  P. 
  cultripes 
  was 
  then 
  confounded; 
  he 
  observes, 
  

   however, 
  that 
  the 
  articulation, 
  by 
  means 
  of 
  one 
  con- 
  

   dyle, 
  is 
  an 
  almost 
  immoveable 
  one. 
  

  

  In 
  a 
  specimen 
  from 
  Bordeaux, 
  from 
  which 
  I 
  prepared 
  

   the 
  first 
  skeleton, 
  I 
  found 
  matters 
  as 
  stated 
  by 
  Duges, 
  

   whilst 
  in 
  two 
  other 
  skeletons, 
  from 
  Bordeaux 
  and 
  

   Avignon, 
  the 
  two 
  bones 
  are 
  as 
  completely 
  fused 
  as 
  in 
  

   P. 
  fuscus. 
  As 
  the 
  ankylosis 
  of 
  the 
  sacram 
  and 
  coccyx 
  

   has 
  often 
  been 
  given 
  as 
  a 
  generic 
  character 
  of 
  Pelo- 
  

   hates, 
  it 
  is 
  important 
  to 
  note 
  the 
  inconstancy 
  of 
  the 
  

   character 
  in 
  this 
  species 
  at 
  least. 
  

  

  Measueements 
  of 
  Skeleton 
  (in 
  millimetres). 
  

  

  

  

  S 
  

  

  9 
  

  

  Length 
  of 
  skull 
  

  

  23 
  

  

  25 
  

  

  Width 
  of 
  skull 
  

  

  29 
  

  

  31 
  

  

  Least 
  interorbital 
  width 
  . 
  

  

  7 
  

  

  7*5 
  

  

  Dorsal 
  vertebral 
  column 
  . 
  

  

  24 
  

  

  26 
  

  

  Urostyle 
  (with 
  sacr 
  

  

  al 
  vertebra) 
  

  

  17 
  

  

  18 
  

  

  Humerus 
  

  

  

  21 
  

  

  20 
  

  

  Radius-ulna 
  

  

  

  14 
  

  

  13 
  

  

  Manus 
  

  

  

  20 
  

  

  19 
  

  

  Pelvis 
  

  

  

  34 
  

  

  38 
  

  

  Femur 
  

  

  

  28 
  

  

  30 
  

  

  Tibia 
  

  

  

  25 
  

  

  26 
  

  

  Tarsus 
  

  

  

  13 
  

  

  13 
  

  

  Pes 
  

  

  

  34 
  

  

  1 
  T 
  f> 
  • 
  

  

  36 
  

  

  Habits. 
  — 
  Much 
  the 
  same 
  as 
  those 
  of 
  its 
  congener. 
  

   P. 
  cuUripes 
  seems, 
  however, 
  more 
  partial 
  to 
  the 
  coast, 
  

   being 
  found 
  in 
  abundance, 
  in 
  France, 
  on 
  the 
  sandy 
  

   dunes 
  of 
  the 
  Atlantic 
  littoral. 
  It 
  breeds 
  in 
  the 
  end 
  

   of 
  March 
  or 
  April 
  in 
  France, 
  in 
  March 
  in 
  Spain. 
  Its 
  

   note, 
  which 
  I 
  have 
  only 
  heard 
  in 
  specimens 
  captured 
  

  

  