﻿ORTJSTiCEA. 
  263 
  

  

  trigonous 
  meriis-joint 
  of 
  the 
  larger 
  (left) 
  chelipede 
  is 
  armed 
  with 
  

   three 
  or 
  four 
  spinules 
  at 
  its 
  distal 
  extremity 
  : 
  the 
  carpus 
  is 
  but 
  

   little 
  shorter 
  than 
  the 
  palm 
  and 
  granulated 
  externally, 
  the 
  graimles 
  

   on 
  the 
  upper 
  margin 
  increasing 
  in 
  size 
  to 
  the 
  distal 
  end, 
  where 
  they 
  

   are 
  spinuliform 
  : 
  the 
  palm 
  also 
  is 
  externally 
  granulated 
  and 
  pubes- 
  

   cent 
  ; 
  the 
  lower 
  margin 
  is 
  in 
  a 
  straight 
  line 
  with 
  the 
  lower 
  margin 
  

   of 
  the 
  immobile 
  finger, 
  and 
  is 
  armed 
  with 
  several 
  much 
  larger 
  acute 
  

   spinules; 
  a 
  few 
  somewhat 
  large 
  granules 
  exist 
  also 
  at 
  the 
  base 
  of 
  the 
  

   palm, 
  and 
  others 
  are 
  arranged 
  in 
  a 
  longitudinal 
  series 
  along 
  the 
  outer 
  

   surface 
  parallel 
  to 
  the 
  upper 
  margin, 
  and 
  also 
  along 
  the 
  upper 
  margin 
  

   of 
  the 
  palm 
  and 
  of 
  the 
  dactyl, 
  which 
  is 
  about 
  as 
  long 
  as 
  the 
  palm, 
  flat- 
  

   tened 
  externally, 
  and 
  fitting 
  closely 
  against 
  v|;he 
  lower 
  finger, 
  having 
  

   on 
  its 
  inner 
  margin 
  near 
  the 
  base 
  a 
  rounded 
  lobe, 
  which 
  is 
  received 
  

   into 
  a 
  corresponding 
  cavity 
  in 
  the 
  inner 
  margin 
  of 
  the 
  lower 
  finger. 
  

   The 
  smaller 
  chelipede 
  has 
  the 
  slender 
  wrist 
  and 
  hand 
  clothed 
  with 
  

   yellowish 
  hairs 
  ; 
  the 
  wrist 
  armed 
  above 
  with 
  small 
  spinules 
  arranged 
  

   in 
  two 
  longitudinal 
  series. 
  The 
  second 
  and 
  third 
  ambulatory 
  legs 
  are 
  

   slender 
  and 
  thinly 
  pubescent, 
  with 
  the 
  dactyli 
  arcuated 
  and 
  rather 
  

   longer 
  than 
  the 
  foregoing 
  joints. 
  The 
  fourth 
  and 
  fifth 
  legs 
  are 
  sub- 
  

   chelate, 
  the 
  small 
  dactyl 
  impinging 
  against 
  the 
  broad 
  spongy 
  pad 
  

   which 
  terminates 
  the 
  penultimate 
  joint. 
  The 
  filamentary 
  appendages 
  

   of 
  the 
  postabdomen 
  are 
  clothed 
  with 
  long 
  hairs. 
  The 
  left 
  uropod 
  only 
  

   is 
  perfect 
  ; 
  it 
  has 
  the 
  inner 
  ramus 
  larger 
  than 
  the 
  outer. 
  The 
  colour 
  

   is 
  whitish, 
  with 
  faint 
  indications 
  of 
  pink 
  upon 
  the 
  legs. 
  Length 
  of 
  

   the 
  carapace 
  about 
  4 
  lines 
  (nearly 
  9 
  millim.), 
  of 
  the 
  left 
  chelipede 
  

   about 
  9 
  lines 
  (19 
  millim.), 
  of 
  the 
  third 
  ambulator 
  j 
  leg 
  about 
  11 
  lines 
  

   (23 
  miUim.). 
  

  

  The 
  single 
  example 
  in 
  Dr. 
  Coppinger's 
  collection 
  is 
  from 
  Prince 
  

   of 
  Wales 
  Channel, 
  7 
  fms. 
  (No. 
  169). 
  

  

  This 
  species 
  scarcely 
  differs 
  from 
  B. 
  spinulimanus, 
  Miers, 
  except 
  in 
  

   the 
  longer 
  slenderer 
  rostrum, 
  denticulated 
  ophthalmic 
  scales, 
  and 
  in 
  

   having 
  the 
  lower 
  margin 
  of 
  the 
  immobile 
  finger 
  in 
  a 
  straight 
  line 
  

   with 
  the 
  lower 
  margin 
  of 
  the 
  palm 
  (fig. 
  c), 
  whereas 
  in 
  the 
  typical 
  

   D. 
  spimdimanus 
  the 
  lower 
  finger 
  is 
  bent 
  downward 
  and 
  the 
  oph- 
  

   thalmic 
  scales 
  subeutire. 
  In 
  D. 
  penicillatus 
  the 
  eyes 
  are 
  much 
  

   shorter, 
  there 
  is 
  a 
  median 
  rostral 
  spine, 
  and 
  the 
  left 
  chela 
  has 
  a 
  

   double 
  series 
  of 
  spinules 
  above. 
  

  

  It 
  may 
  be 
  distinguished 
  from 
  the 
  species 
  of 
  Diogenes 
  included 
  in 
  

   Mr. 
  Haswell's 
  Australian 
  Catalogue 
  (pp. 
  156, 
  157) 
  as 
  follows 
  : 
  — 
  

   From 
  D. 
  miles, 
  Fabr., 
  by 
  the 
  much 
  less 
  spinulose 
  chelipedes 
  and 
  

   shorter 
  tarsi 
  of 
  the 
  ambulatory 
  logs 
  ; 
  from 
  I), 
  custos, 
  Fabr., 
  by 
  the 
  

   narrower, 
  non-denticulated, 
  rostriform 
  appendage 
  ; 
  from 
  D. 
  granu- 
  

   latus, 
  Miers, 
  by 
  the 
  very 
  different 
  form 
  and 
  armature 
  of 
  the 
  larger 
  

   (left) 
  chelipede, 
  &c. 
  ; 
  and 
  from 
  D. 
  sencx, 
  Heller, 
  by 
  the 
  shorter 
  

   rostrum 
  and 
  eye-peduncles, 
  which 
  latter 
  do 
  not 
  reach 
  to 
  the 
  end 
  of 
  

   the 
  peduncles 
  of 
  the 
  antenna), 
  the 
  different 
  spinulation 
  of 
  the 
  palms 
  

   of 
  the 
  chelipedes, 
  &c. 
  

  

  