﻿RAN 
  A. 
  285 
  

  

  mouth. 
  Spiraculum 
  on 
  the 
  left 
  side, 
  directed 
  upwards 
  

   and 
  backwards, 
  a 
  little 
  nearer 
  the 
  end 
  of 
  the 
  snout 
  

   than 
  the 
  anus, 
  visible 
  from 
  above 
  and 
  from 
  below. 
  

   Anus 
  opening 
  on 
  the 
  right 
  side, 
  close 
  to 
  the 
  lower 
  

   edge 
  of 
  the 
  subcaudal 
  crest. 
  Tail 
  twice 
  and 
  three- 
  

   fourths 
  to 
  four 
  times 
  as 
  long 
  as 
  deep, 
  acutely 
  pointed 
  ; 
  

   upper 
  crest 
  convex, 
  a 
  little 
  deeper 
  than 
  the 
  lower, 
  not 
  

   extending 
  far 
  upon 
  the 
  back 
  ; 
  the 
  depth 
  of 
  the 
  mus- 
  

   cular 
  portion 
  at 
  its 
  base 
  about 
  half 
  the 
  greatest 
  total 
  

   depth. 
  

  

  Beak 
  very 
  broadly 
  edged 
  with 
  black, 
  sometimes 
  

   almost 
  entirely 
  black. 
  Sides 
  and 
  lower 
  edge 
  of 
  the 
  

   lip 
  bordered 
  with 
  papillae, 
  which 
  usually 
  stand 
  in 
  two 
  

   rows 
  ; 
  upper 
  lip 
  with 
  a 
  long 
  series 
  of 
  fine 
  teeth, 
  

   followed 
  on 
  each 
  side 
  by 
  a 
  short 
  series 
  ; 
  three 
  series 
  

   of 
  teeth 
  in 
  the 
  lower 
  lip, 
  the 
  two 
  outer 
  uninterrupted, 
  

   the 
  third 
  also 
  continuous 
  or 
  narrowly 
  interrupted, 
  the 
  

   outermost 
  only 
  half 
  to 
  two-thirds 
  as 
  long 
  as 
  the 
  

   others. 
  

  

  The 
  muciferous 
  crypts 
  are 
  pretty 
  distinct 
  on 
  the 
  

   head, 
  where 
  they 
  form 
  two 
  series, 
  extending 
  from 
  the 
  

   end 
  of 
  the 
  snout 
  to 
  the 
  upper 
  borders 
  of 
  the 
  eyes, 
  

   passing 
  between 
  the 
  nostrils. 
  A 
  pair 
  of 
  dorsal 
  lines 
  are 
  

   usually 
  distinguishable 
  on 
  each 
  side 
  of 
  the 
  back, 
  close 
  

   together 
  in 
  front, 
  diverging 
  posteriorly 
  ; 
  these 
  lines 
  in 
  

   the 
  advanced 
  tadpole 
  coalesce 
  to 
  form 
  the 
  dorso-lateral 
  

   fold 
  of 
  the 
  perfect 
  animal. 
  

  

  Olive 
  or 
  greyish-olive 
  above, 
  speckled 
  with 
  brown; 
  

   sides 
  with 
  silvery 
  or 
  pale 
  golden 
  spots 
  ; 
  belly 
  white 
  ; 
  

   throat 
  pinkish, 
  with 
  mother-of-pearl 
  coloured 
  spots; 
  

   tail 
  pale 
  greyish, 
  closely 
  spotted, 
  .dotted, 
  or 
  vermicu- 
  

   lated 
  with 
  grey 
  or 
  blackish 
  ; 
  the 
  muscular 
  portion 
  of 
  

   the 
  tail 
  yellowish, 
  often 
  with 
  three 
  blackish 
  stripes 
  on 
  

   its 
  basal 
  third. 
  With 
  advancing 
  a^e, 
  when 
  the 
  hind 
  

   limbs 
  are 
  approaching 
  their* 
  full 
  development, 
  the 
  

   back 
  assumes 
  a 
  more 
  decidedly 
  greenish 
  colour, 
  and 
  

   the 
  pale 
  green 
  vertebral 
  stripe, 
  if 
  it 
  is 
  to 
  exist, 
  makes 
  

   its 
  appearance. 
  

  

  The 
  largest 
  tadpoles 
  of 
  the 
  typical 
  form, 
  collected 
  

  

  