﻿224 
  COLLECTIONS 
  FROM 
  MELANESIA. 
  

  

  joint 
  barel}' 
  reaches 
  to 
  the 
  subfrontal 
  angle, 
  but 
  attains 
  to 
  a 
  level 
  

   with 
  the 
  apex 
  of 
  the 
  inner 
  suborbital 
  lobe 
  ; 
  the 
  antennalflagella 
  are 
  

   much 
  elongated. 
  The 
  chelipedes 
  (in 
  the 
  single 
  male 
  examined) 
  are 
  

   rather 
  slender 
  and 
  nearly 
  equal 
  ; 
  the 
  arm 
  has 
  two 
  spines 
  at 
  the 
  

   distal 
  end 
  of 
  its 
  upper 
  margin 
  ; 
  the 
  wrist 
  is 
  armed 
  with 
  several 
  

   spines, 
  the 
  strongest 
  one 
  being 
  on 
  the 
  inner 
  margin 
  ; 
  the 
  palm 
  has 
  

   its 
  upper 
  margin 
  and 
  outer 
  surface 
  armed 
  with 
  small 
  spines 
  or 
  spini- 
  

   form 
  tubercles 
  disposed 
  in 
  longitudinal 
  series 
  ; 
  these 
  are 
  with 
  

   difficulty 
  discernible 
  through 
  the 
  hairs 
  covering 
  this 
  joint 
  ; 
  fingers 
  

   brown, 
  and 
  distinctly 
  dentated 
  on 
  their 
  inner 
  margins. 
  The 
  ambu- 
  

   latory 
  legs 
  are 
  elongated 
  and 
  slender, 
  and 
  have 
  their 
  upper 
  and 
  

   lower 
  margins 
  clothed 
  with 
  long 
  hairs. 
  Colour 
  reddish 
  (in 
  spirit), 
  

   with 
  purplish 
  markings. 
  Length 
  about 
  2| 
  lines 
  (omillim.), 
  breadth 
  

  

  3 
  lines 
  (nearly 
  7 
  millim.) 
  ; 
  length 
  of 
  penultimate 
  ambulatory 
  limb 
  

   nearly 
  6 
  lines 
  (12 
  millim.). 
  

  

  The 
  single 
  specimen 
  (a 
  male) 
  was 
  obtained 
  at 
  Port 
  Denison, 
  

  

  4 
  fms. 
  (No. 
  111). 
  

  

  P. 
  cursor^ 
  A. 
  M.-Edwards, 
  was 
  founded 
  on 
  specimens 
  from 
  New 
  

   Caledonia 
  and 
  the 
  Samoa 
  Islands 
  ; 
  the 
  description 
  diifers 
  from 
  the 
  

   above 
  in 
  several 
  minor 
  particulars 
  ; 
  but 
  I 
  have 
  thought 
  it 
  better 
  to 
  

   regard 
  the 
  Australian 
  example 
  before 
  me 
  as 
  identical 
  with 
  this 
  

   species 
  than 
  to 
  run 
  the 
  risk 
  of 
  unnecessarily 
  adding 
  to 
  the 
  synonyma. 
  

   Mr, 
  Haswell 
  (Cat. 
  p. 
  G7) 
  records 
  it 
  from 
  Port 
  Molle. 
  

  

  60. 
  Pilumnus 
  labyrintMcus. 
  (Plate 
  XXII. 
  fig. 
  C.) 
  

  

  In 
  this 
  curious 
  form 
  the 
  surface 
  of 
  the 
  carapace 
  is 
  everj-where 
  

   covered 
  with 
  raised 
  curved 
  or 
  sinuated 
  ridges, 
  which 
  are 
  separated 
  

   hj 
  wide 
  depressions 
  ; 
  the 
  body 
  and 
  legs 
  are 
  covered 
  with 
  a 
  dense 
  

   close 
  brown 
  pubescence 
  ; 
  from 
  most 
  of 
  the 
  ridges 
  and 
  from 
  the 
  teeth 
  

   of 
  the 
  antero-lateral 
  margins 
  of 
  the 
  carapace 
  spring 
  longer 
  setae, 
  

   and 
  the 
  margins 
  of 
  the 
  ambulatory 
  legs 
  are 
  also 
  fringed 
  with 
  longer 
  

   hairs. 
  The 
  frontal 
  lobes, 
  which 
  are 
  scarcely 
  separated 
  as 
  usual 
  by 
  a 
  

   median 
  notch, 
  are 
  rather 
  broad, 
  straight, 
  and 
  but 
  little 
  prominent 
  ; 
  

   the 
  antero-lateral 
  margins 
  are 
  somewhat 
  shorter 
  than 
  the 
  postero- 
  

   lateral, 
  and 
  are 
  armed 
  with 
  three 
  distinct 
  teeth, 
  that 
  of 
  the 
  exterior 
  

   orbital 
  angle 
  being 
  obsolete. 
  The 
  orbital 
  margin 
  is 
  somewhat 
  

   thickened 
  ; 
  the 
  epistoma 
  rather 
  longer 
  in 
  proportion 
  to 
  its 
  breadth 
  

   than 
  is 
  usual. 
  The 
  basal 
  antennal 
  joint 
  is 
  short, 
  scarcely 
  attaining 
  

   to 
  the 
  subfrontal 
  process, 
  and 
  not 
  nearly 
  reaching 
  to 
  the 
  apex 
  of 
  

   the 
  very 
  prominent 
  lobe 
  at 
  the 
  inner 
  suborbital 
  angle. 
  The 
  cheli- 
  

   pedes 
  are 
  rather 
  small 
  and 
  (like 
  the 
  carapace) 
  are 
  densely 
  pubescent, 
  

   besides 
  being 
  clothed 
  with 
  longer 
  hairs 
  ; 
  the 
  outer 
  surface 
  of 
  the 
  

   wrist 
  or 
  carpus 
  is 
  tuberculated 
  beneath 
  the 
  hairy 
  coat 
  ; 
  the 
  palm 
  is 
  

   clothed 
  externally 
  with 
  long 
  dense 
  hairs 
  ; 
  the 
  upper 
  margin 
  of 
  the 
  

   palm 
  bears 
  three 
  distinct 
  tubercles 
  ; 
  the 
  fingers 
  are 
  slaty 
  coloured, 
  

   dentated 
  on 
  their 
  inner 
  margins 
  and 
  acute 
  at 
  their 
  apices. 
  The 
  

   ambulatory 
  legs 
  are 
  densely 
  hairy 
  and 
  of 
  moderate 
  length. 
  Length 
  

   of 
  carapace 
  nearly 
  4 
  lines 
  (8 
  millim.), 
  breadth 
  about 
  4^ 
  lines 
  

   (y 
  millim.). 
  

  

  