﻿278 
  RANID2E. 
  

  

  between 
  the 
  latter 
  and 
  the 
  typical 
  form 
  appears 
  to 
  

   me 
  arbitrary, 
  and 
  that 
  my 
  arrangement 
  is 
  open 
  to 
  this 
  

   criticism, 
  that 
  there 
  is 
  altogether 
  a 
  greater 
  amount 
  of 
  

   difference 
  between 
  the 
  two 
  extremes 
  of 
  the 
  series 
  than 
  

   there 
  is 
  between 
  the 
  extreme 
  in 
  the 
  lessonae 
  direction 
  

   and 
  the 
  form 
  lessonx 
  itself. 
  The 
  true 
  typical 
  B. 
  escu- 
  

   lenta, 
  as 
  figured 
  by 
  Rosel, 
  is 
  pretty 
  well 
  in 
  the 
  middle 
  

   of 
  the 
  series; 
  the 
  outermost 
  specimens 
  with 
  small 
  

   inner 
  metatarsal 
  tubercle 
  are 
  from 
  France, 
  Corsica, 
  

   and 
  Italy; 
  whilst 
  the 
  opposite 
  obtains 
  in 
  specimens 
  

   from 
  Basle 
  and 
  Vienna. 
  

  

  Var. 
  lessons. 
  

  

  Inner 
  metatarsal 
  tubercle 
  very 
  strong, 
  compressed, 
  

   hard, 
  crescentic, 
  its 
  depth 
  about 
  half 
  its 
  length, 
  which 
  

   is 
  1^ 
  to 
  2 
  times 
  in 
  the 
  length 
  of 
  the 
  inner 
  toe, 
  and 
  

   5 
  to 
  8 
  times 
  in 
  the 
  length 
  of 
  the 
  tibia 
  ; 
  when 
  the 
  

   limbs 
  are 
  folded 
  at 
  right 
  angles 
  to 
  the 
  body 
  the 
  heels 
  

   sometimes 
  meet, 
  but 
  usually 
  fail 
  to 
  meet; 
  tibia 
  con- 
  

   siderably 
  shorter 
  than 
  the 
  foot 
  measured 
  from 
  the 
  

   outer 
  metatarsal 
  tubercle. 
  The 
  tibio-tarsal 
  articula- 
  

   tion 
  reaches 
  between 
  the 
  shoulder 
  and 
  the 
  eye. 
  Skin 
  

   smooth 
  or 
  with 
  small 
  warts 
  ; 
  glandular 
  lateral 
  fold 
  

   very 
  prominent, 
  narrower 
  than 
  the 
  upper 
  eyelid. 
  

  

  Bright 
  green 
  or 
  brown 
  above, 
  the 
  black 
  markings 
  

   sometimes 
  forming 
  longitudinal 
  bands 
  ; 
  hinder 
  side 
  of 
  

   thighs 
  handsomely 
  marbled 
  with 
  black 
  on 
  a 
  bright 
  

   yellow 
  or 
  orange 
  ground; 
  vocal 
  sacs 
  not, 
  or 
  but 
  very 
  

   slightly 
  pigmented. 
  

  

  British 
  specimens 
  are 
  olive-brown 
  or 
  bronzy-brown 
  

   above, 
  spotted 
  with 
  black, 
  strongly 
  marbled 
  on 
  the 
  

   flanks, 
  where 
  a 
  light 
  longitudinal 
  area 
  remains 
  un- 
  

   spotted 
  ; 
  glandular 
  folds 
  lighter; 
  the 
  sides 
  of 
  the 
  

   head 
  and 
  the 
  ground 
  colour 
  of 
  the 
  flanks 
  sometimes 
  

   green; 
  canthal 
  streak 
  w 
  r 
  ell 
  marked, 
  black; 
  upper 
  lip 
  

   usually 
  bordered 
  with 
  black 
  ; 
  tympanum 
  chestuut- 
  

   brown 
  ; 
  a 
  pale 
  yellow 
  or 
  pale 
  green 
  vertebral 
  line, 
  

   frequently 
  edged 
  with 
  black. 
  The 
  dark 
  cross-bands 
  

   on 
  the 
  limbs 
  usually 
  very 
  irregular, 
  sometimes 
  absent. 
  

  

  