﻿ALYTES. 
  173 
  

  

  halfway 
  between 
  the 
  end 
  of 
  the 
  snout 
  and 
  the 
  eyes. 
  

   Eyes 
  on 
  the 
  upper 
  surface 
  of 
  the 
  body, 
  the 
  distance 
  

   between 
  them 
  about 
  twice 
  as 
  great 
  as 
  that 
  between 
  

   the 
  nostrils, 
  and 
  equal 
  to 
  or 
  slightly 
  greater 
  than 
  the 
  

   width 
  of 
  the 
  mouth. 
  Spiraculum 
  in 
  the 
  mid-veiitral 
  

   line, 
  a 
  little 
  nearer 
  the 
  anterior 
  than 
  the 
  posterior 
  

   extremity 
  of 
  the 
  body. 
  Anal 
  opening 
  median, 
  very 
  

   much 
  larger 
  than 
  the 
  spiraculum. 
  Tail 
  twice 
  and 
  

   two-thirds 
  to 
  thrice 
  as 
  long 
  as 
  deep, 
  ending 
  in 
  an 
  

   obtuse 
  point 
  ; 
  the 
  upper 
  crest 
  convex, 
  usually 
  a 
  little 
  

   deeper 
  than 
  the 
  lower, 
  and 
  extending 
  but 
  very 
  slightly 
  

   upon 
  the 
  back; 
  the 
  depth 
  of 
  the 
  muscular 
  portiou, 
  at 
  

   its 
  base, 
  about 
  half 
  the 
  total 
  depth. 
  

  

  Beak 
  white, 
  with 
  a 
  broad 
  black 
  margin. 
  Lip 
  

   entirely 
  surrounded 
  by 
  a 
  series 
  of 
  papillae. 
  Labial 
  

   teeth 
  in 
  f 
  series, 
  occupying 
  nearly 
  the 
  whole 
  width 
  of 
  

   the 
  inner 
  surface 
  of 
  the 
  lip, 
  all 
  continuous, 
  or 
  the 
  third 
  

   lower 
  narrowly 
  broken 
  up 
  in 
  the 
  middle 
  ; 
  the 
  first 
  

   upper 
  and 
  the 
  first 
  lower 
  series 
  composed 
  of 
  one 
  or 
  

   two 
  rows 
  of 
  teeth, 
  the 
  others 
  of 
  two 
  or 
  three. 
  

  

  Lines 
  of 
  crypts 
  usually 
  very 
  indistinct; 
  all 
  that 
  can 
  

   be 
  distinguished 
  being 
  the 
  usual 
  lines 
  from 
  the 
  end 
  of 
  

   the 
  snout 
  between 
  the 
  nostrils, 
  bordering 
  the 
  eyes 
  

   above, 
  behind 
  and 
  below, 
  and 
  forming 
  a 
  loop 
  on 
  each 
  

   side 
  of 
  the 
  upper 
  lip, 
  a 
  line 
  beginning 
  at 
  a 
  considerable 
  

   distance 
  behind 
  the 
  eye 
  along 
  each 
  side 
  of 
  the 
  back 
  to 
  

   the 
  upper 
  border 
  of 
  the 
  muscular 
  part 
  of 
  the 
  tail, 
  and 
  

   another 
  very 
  short 
  line 
  close 
  to 
  and 
  parallel 
  with 
  the 
  

   anterior 
  extremity 
  of 
  the 
  latter. 
  But 
  in 
  a 
  fine 
  

   specimen 
  from 
  Bellaigues, 
  Switzerland, 
  I 
  find 
  the 
  

   lines 
  much 
  more 
  distinct 
  and 
  blackish 
  ; 
  in 
  addition 
  to 
  

   the 
  series 
  described 
  above, 
  it 
  shows 
  the 
  second 
  dorsal 
  

   line 
  prolonged 
  to 
  the 
  base 
  of 
  the 
  tail, 
  which 
  also 
  

   bears 
  two 
  lines, 
  the 
  upper 
  being 
  on 
  the 
  supra-caudal 
  

   crest 
  ; 
  a 
  short 
  series 
  descends 
  vertically 
  from 
  below 
  

   the 
  centre 
  of 
  the 
  eye, 
  another, 
  curved, 
  from 
  below 
  the 
  

   anterior 
  extremity 
  of 
  the 
  dorsal 
  lines, 
  a 
  third 
  on 
  each 
  

   side 
  of 
  the 
  mouth, 
  and 
  a 
  fourth 
  extends 
  on 
  each 
  side 
  

   of 
  the 
  belly, 
  from 
  the 
  level 
  of 
  the 
  spiraculum 
  nearly 
  

  

  