﻿PELOBATES. 
  203 
  

  

  gradually 
  decrease 
  in 
  length, 
  — 
  the 
  fourth, 
  if 
  at 
  all 
  

   present, 
  being 
  extremely 
  short. 
  On 
  the 
  lower 
  lip 
  we 
  

   see 
  likewise 
  a 
  short 
  outer 
  series, 
  followed 
  by 
  three 
  or 
  

   four 
  much 
  longer 
  ones, 
  all 
  of 
  which, 
  with 
  the 
  occa- 
  

   sional 
  exception 
  of 
  the 
  first, 
  are 
  interrupted 
  in 
  the 
  

   middle, 
  and 
  may 
  be 
  more 
  or 
  less 
  broken 
  up 
  on 
  the 
  

   sides. 
  The 
  series 
  of 
  labial 
  teeth 
  may 
  therefore 
  be 
  

   formulated 
  as 
  -f 
  or 
  -f-. 
  Small 
  isolated 
  teeth 
  may 
  also 
  

   be 
  scattered 
  on 
  the 
  papillge 
  at 
  the 
  angles 
  of 
  the 
  

   mouth. 
  

  

  I 
  have 
  not 
  been 
  able 
  to 
  distinguish 
  lines 
  of 
  crypts 
  

   beyond 
  the 
  two 
  series 
  which 
  run 
  from 
  the 
  end 
  of 
  the 
  

   snout 
  to 
  the 
  upper 
  border 
  of 
  the 
  eyes, 
  passing 
  be- 
  

   tween 
  the 
  nostrils. 
  I 
  am 
  therefore 
  unable 
  to 
  judge 
  

   whether 
  the 
  dorsal 
  lines 
  have 
  been 
  correctly 
  figured 
  

   by 
  Lessona, 
  who 
  rightly 
  regards 
  the 
  figure 
  given 
  by 
  

   Cornalia 
  as 
  fanciful. 
  

  

  The 
  advanced 
  tadpole 
  is 
  brown 
  or 
  olive-brown 
  above, 
  

   with 
  or 
  without 
  small 
  darker 
  spots, 
  greyish-white 
  or 
  

   bluish 
  beneath 
  ; 
  sides 
  with 
  roundish 
  whitish 
  or 
  -pale 
  

   golden 
  spots; 
  tail 
  pale 
  brown, 
  with 
  small 
  grey 
  and 
  

   whitish 
  spots. 
  

  

  The 
  body 
  usually 
  reaches 
  at 
  least 
  the 
  size 
  of 
  a 
  

   pigeon's 
  egg, 
  but 
  not 
  unfrequently 
  exceeds 
  that 
  size. 
  

   The 
  largest 
  specimen 
  in 
  the 
  British 
  Museum, 
  from 
  

   Prague, 
  measures 
  125 
  mm., 
  body 
  38, 
  width 
  of 
  body 
  

   25, 
  tail 
  87, 
  depth 
  of 
  tail 
  27. 
  The 
  largest 
  specimen 
  on 
  

   record 
  is 
  one 
  preserved 
  in 
  the 
  Berlin 
  Museum, 
  obtained 
  

   in 
  December, 
  1867, 
  on 
  the 
  Jungfernheide, 
  near 
  Berlin, 
  

   and 
  which 
  measures 
  175 
  mm. 
  

  

  Habitat. 
  — 
  The 
  range 
  of 
  this 
  species 
  is 
  an 
  extensive 
  

   but 
  broken 
  one, 
  its 
  occurrence 
  being 
  obviously 
  depen- 
  

   dent 
  on 
  the 
  nature 
  of 
  the 
  soil, 
  and 
  restricted 
  to 
  the 
  

   plain, 
  the 
  highest 
  elevation 
  at 
  which 
  it 
  has 
  yet 
  been 
  

   recorded 
  being 
  1400 
  feet 
  (Val 
  di 
  Susa, 
  Piedmont). 
  P. 
  

   fuscus 
  also 
  appears 
  to 
  avoid 
  competition 
  with 
  its 
  con- 
  

   gener 
  P. 
  cultripes 
  ; 
  the 
  limit 
  of 
  the 
  range 
  of 
  the 
  two 
  

   closely 
  meet 
  without 
  anywhere 
  overlapping. 
  It 
  in- 
  

   habits 
  the 
  north-east 
  and 
  east 
  of 
  France, 
  from 
  Fland 
  ers 
  

  

  