﻿PELOBATES. 
  209 
  

  

  in 
  summer, 
  may 
  be 
  well 
  rendered 
  by 
  a 
  guttural 
  co, 
  

   CO, 
  CO, 
  CO, 
  CO 
  ; 
  its 
  nuptial 
  call 
  is 
  said 
  to 
  be 
  the 
  same. 
  

  

  EaGS. 
  — 
  According 
  to 
  Heron-Rover, 
  they 
  differ 
  but 
  

   slightly 
  from 
  those 
  of 
  P. 
  fuscus 
  ; 
  the 
  mucilaginous 
  

   band 
  is 
  a 
  little 
  narrower 
  and 
  flatter, 
  thus 
  mucb 
  re- 
  

   sembling 
  that 
  of 
  Pelochjtes 
  pibnctatus. 
  

  

  Tadpole 
  (PL 
  II, 
  fig. 
  2). 
  — 
  The 
  differences 
  from 
  P. 
  

   fuscus 
  are 
  but 
  slight, 
  and 
  most 
  of 
  those 
  that 
  have 
  

   hitherto 
  been 
  relied 
  upon 
  prove 
  not 
  to 
  be 
  absolutely 
  

   constant. 
  Thus 
  the 
  nostrils, 
  as 
  I 
  now 
  find 
  from 
  

   Portuguese 
  specimens 
  received 
  from 
  Dr. 
  de 
  Bedriaga 
  

   since 
  the 
  publication 
  of 
  my 
  ' 
  Synopsis 
  of 
  the 
  Tadpoles,' 
  

   may 
  be 
  as 
  wide 
  apart 
  as 
  in 
  P. 
  fuscus. 
  The 
  series 
  of 
  

   labial 
  teeth 
  are 
  more 
  broken 
  up, 
  and 
  their 
  arrange- 
  

   ment 
  is 
  therefore 
  less 
  easily 
  expressed 
  by 
  a 
  formula. 
  

   The 
  tail 
  is 
  shorter, 
  not 
  more 
  than 
  once 
  and 
  a 
  half 
  the 
  

   length 
  of 
  the 
  body. 
  The 
  lines 
  of 
  crypts 
  are 
  usually 
  

   more 
  distinct, 
  owing 
  to 
  the 
  black 
  colour 
  of 
  the 
  tubules 
  

   and 
  the 
  lighter 
  colour 
  of 
  the 
  body. 
  Their 
  disposition 
  

   is 
  well 
  shown 
  in 
  the 
  example 
  figured. 
  The 
  following 
  

   description 
  is 
  taken 
  from 
  five 
  specimens 
  obtained 
  by 
  

   M. 
  Lataste 
  near 
  Bordeaux 
  : 
  

  

  Length 
  of 
  body 
  once 
  and 
  two-thirds 
  to 
  once 
  and 
  

   three-fourths 
  its 
  width, 
  once 
  and 
  one-fourth 
  to 
  once 
  

   and 
  two-fifths 
  in 
  the 
  length 
  of 
  the 
  tail. 
  Nostrils 
  half- 
  

   way 
  between 
  the 
  eyes 
  and 
  the 
  end 
  of 
  the 
  snout, 
  or 
  a 
  

   little 
  nearer 
  the 
  latter. 
  Eyes 
  On 
  the 
  upper 
  surface, 
  a 
  

   little 
  nearer 
  the 
  spiraculum 
  than 
  the 
  end 
  of 
  the 
  snout, 
  

   the 
  distance 
  between 
  them 
  nearly 
  twice 
  as 
  great 
  as 
  

   that 
  between 
  the 
  nostrils, 
  which 
  equals 
  the 
  width 
  of 
  

   the 
  mouth. 
  Spiraculum 
  equidistant 
  from 
  either 
  ex- 
  

   tremity 
  of 
  the 
  body. 
  Tail 
  once 
  and 
  two-thirds 
  to 
  

   once 
  and 
  five-sixths 
  as 
  long 
  as 
  deep, 
  pointed, 
  the 
  

   muscular 
  portion 
  not 
  half 
  the 
  total 
  depth. 
  

  

  Specimens 
  preserved 
  in 
  spirit, 
  of 
  which 
  I 
  have 
  a 
  

   good 
  number 
  before 
  me 
  at 
  the 
  present 
  moment, 
  are 
  

   pale 
  greyish 
  or 
  brownish 
  above 
  and 
  on 
  the 
  sides, 
  the 
  

   belly 
  dirty 
  white 
  with 
  round 
  white 
  spots. 
  Muscular 
  

   part 
  of 
  tail 
  pale 
  reddish-brown, 
  with 
  some 
  darker 
  

  

  

  

  