﻿RANA, 
  

  

  293 
  

  

  cess 
  of 
  squamosal 
  as 
  long 
  as 
  the 
  posterior. 
  Occipital 
  

   condyles 
  entirely 
  behind 
  the 
  articular 
  extremities 
  of 
  

   the 
  upper 
  jaw. 
  

  

  Diapophyses 
  of 
  dorsal 
  vertebrae 
  more 
  unequal 
  in 
  

   length 
  than 
  in 
  B. 
  esculenta, 
  the 
  second 
  once 
  and 
  a 
  half 
  

   to 
  once 
  and 
  two-thirds 
  as 
  long 
  as 
  the 
  last 
  three. 
  

  

  Tibia 
  longer 
  than 
  the 
  femur, 
  nearly 
  twice 
  as 
  long 
  

   as 
  the 
  tarsus. 
  Terminal 
  phalanges 
  expanded 
  at 
  the 
  

   end, 
  somewhat 
  anchor-shaped. 
  A 
  single 
  large 
  bone 
  

   to 
  the 
  praehallux. 
  The 
  sesamoid 
  bone 
  on 
  the 
  inner 
  

   side 
  of 
  the 
  proximal 
  extremity 
  of 
  the 
  tarsus 
  much 
  

   larger 
  than 
  in 
  B. 
  esculenta. 
  

  

  Measurements 
  of 
  Skeleton 
  (in 
  millimetres). 
  

  

  

  S 
  

  

  9 
  

  

  Length 
  of 
  skull 
  

  

  . 
  16 
  

  

  16 
  

  

  Width 
  of 
  skull 
  

  

  . 
  16 
  

  

  17 
  

  

  Least 
  interorbital 
  width 
  

  

  . 
  3 
  

  

  3 
  

  

  Dorsal 
  vertebral 
  column 
  

  

  . 
  18 
  

  

  19 
  

  

  Urostyle 
  ..... 
  

  

  . 
  17 
  

  

  17 
  

  

  Humerus 
  .... 
  

  

  . 
  16 
  

  

  14 
  

  

  Radius-ulna 
  .... 
  

  

  . 
  10 
  

  

  8 
  

  

  Manus 
  ..... 
  

  

  . 
  12 
  

  

  13 
  

  

  Pelvis 
  ..... 
  

  

  . 
  22 
  

  

  22 
  

  

  Femur 
  ..... 
  

  

  . 
  24 
  

  

  23 
  

  

  Tibia 
  

  

  . 
  27 
  

  

  25 
  

  

  Tarsus 
  ..... 
  

  

  . 
  13 
  

  

  12 
  

  

  Pes 
  

  

  . 
  30 
  

  

  28 
  

  

  Habits. 
  — 
  Bana 
  arvalis 
  pairs 
  in 
  March 
  or 
  April, 
  

   together 
  with 
  or 
  a 
  week 
  or 
  a 
  fortnight 
  later 
  than 
  

   B. 
  temporaria, 
  and 
  after 
  the 
  breeding 
  season 
  leads 
  a 
  

   terrestrial 
  existence, 
  being 
  found 
  in 
  fields, 
  meadows, 
  

   and 
  bogs, 
  in 
  company 
  with 
  the 
  common 
  frog, 
  although 
  

   as 
  a 
  rule 
  more 
  partial 
  to 
  damp 
  localities. 
  Numbers 
  

   of 
  males 
  hibernate 
  under 
  water. 
  The 
  voice 
  is 
  very 
  

   different 
  from 
  that 
  of 
  B. 
  temporaries, 
  and 
  much 
  

   resembles 
  that 
  of 
  B. 
  agilis 
  ; 
  it 
  may 
  be 
  rendered 
  by 
  

   co, 
  co, 
  co, 
  and 
  has 
  been 
  compared 
  to 
  the 
  sound 
  of 
  air 
  

   escaping 
  from 
  a 
  bottle 
  held 
  under 
  water. 
  No 
  fore- 
  

   sight 
  is 
  exercised 
  in 
  the 
  selection 
  of 
  a 
  site 
  for 
  the 
  

   deposition 
  of 
  the 
  ova, 
  which 
  are 
  often 
  doomed 
  through 
  

   the 
  drying 
  up 
  of 
  ditches 
  or 
  shallow 
  puddles 
  of 
  rain 
  

  

  