﻿BOMBINATOR. 
  153 
  

  

  liowever, 
  these 
  excrescences 
  are 
  often 
  not 
  different 
  

   from 
  those 
  of 
  B. 
  igneus, 
  which 
  in 
  the 
  males 
  may 
  

   exceptionally 
  assume 
  the 
  form 
  of 
  spines. 
  Gular 
  fold 
  

   usually 
  absent 
  or 
  rather 
  indistinct; 
  sometimes, 
  how- 
  

   ever, 
  as 
  well 
  marked 
  as 
  in 
  B. 
  igneus. 
  

  

  Upper 
  parts 
  yellowish, 
  greyish-brown, 
  or 
  olive, 
  as 
  if 
  

   powdered 
  with 
  metallic 
  bronzy 
  dust, 
  uniform 
  or 
  with 
  

   dark 
  spots 
  disposed 
  as 
  in 
  B. 
  igneus 
  ; 
  usually 
  a 
  pair 
  of 
  

   more 
  or 
  less 
  distinct, 
  light 
  yellowish 
  or 
  whitish, 
  round 
  

   spots 
  between 
  the 
  shoulders, 
  and 
  another 
  pair 
  further 
  

   back 
  in 
  the 
  middle 
  of 
  the 
  body. 
  Black 
  has 
  been 
  as- 
  

   signed 
  as 
  the 
  ground 
  colour 
  of 
  the 
  lower 
  surfaces 
  in 
  B. 
  

   igneus 
  ; 
  in 
  this 
  species 
  in 
  most 
  cases 
  these 
  parts 
  should 
  

   be 
  described 
  as 
  yellow, 
  varying 
  from 
  pale 
  straw-colour 
  

   to 
  orange, 
  with 
  greyish-blue 
  or 
  black 
  spots 
  or 
  mar- 
  

   blings, 
  which 
  may 
  be 
  lighter 
  in 
  the 
  centre. 
  In 
  some 
  

   specimens, 
  however, 
  the 
  black 
  is 
  more 
  diffused, 
  and 
  

   might 
  be 
  regarded 
  as 
  the 
  ground 
  colour 
  on 
  which 
  

   small 
  yellow 
  blotches 
  are 
  irregularly 
  distributed, 
  in 
  

   addition 
  to 
  white 
  dots, 
  as 
  in 
  B. 
  igneus 
  ; 
  such 
  is 
  the 
  

   specimen 
  from 
  Basle 
  figured 
  on 
  PI. 
  YI, 
  fig. 
  4, 
  and 
  

   I 
  have 
  seen 
  similar 
  ones 
  from 
  Belgium 
  and 
  Normandy. 
  

  

  The 
  yellow 
  of 
  the 
  lower 
  surface 
  of 
  the 
  thigh 
  sends 
  

   up 
  a 
  process 
  which 
  is 
  well 
  visible 
  from 
  behind 
  when 
  

   the 
  animal 
  swims, 
  as 
  a 
  patch 
  halfway 
  between 
  the 
  

   vent 
  and 
  the 
  leg, 
  and 
  the 
  bright 
  colour 
  of 
  the 
  lower 
  

   surface 
  of 
  the 
  arm 
  often 
  extends 
  uninterrupted 
  across 
  

   the 
  breast, 
  which 
  it 
  never 
  does 
  in 
  B, 
  igneus. 
  The 
  

   fingers 
  and 
  toes 
  are 
  tipped 
  with 
  bright 
  yellow, 
  and 
  

   the 
  yellow 
  palmar 
  and 
  plantar 
  spots 
  involve 
  the 
  whole 
  

   of 
  the 
  inner 
  digit, 
  unless 
  interrupted 
  by 
  a 
  small 
  black 
  

   spot, 
  sometimes 
  the 
  whole 
  of 
  the 
  second, 
  and 
  may 
  

   even 
  extend 
  on 
  their 
  upper 
  surface 
  ; 
  the 
  plantar 
  spot 
  

   is 
  often, 
  but 
  by 
  no 
  means 
  always, 
  confluent 
  with 
  the 
  

   tarsal. 
  In 
  specimens 
  from 
  the 
  peninsula 
  of 
  Italy 
  

   (the 
  typical 
  B. 
  pachypus 
  of 
  Fitzinger), 
  such 
  as 
  the 
  

   one 
  from 
  Calabria 
  figured 
  on 
  PI. 
  VI, 
  fig. 
  3, 
  the 
  

   yellow 
  tarsal 
  spot 
  is 
  absent 
  or 
  reduced 
  to 
  a 
  few 
  small 
  

   marblings, 
  and 
  the 
  lower 
  surface 
  of 
  the 
  tibia 
  may 
  also 
  

  

  