﻿CETTSTACEA. 
  219 
  

  

  without 
  definite 
  locality, 
  from 
  the 
  collection 
  of 
  the 
  late 
  Dr. 
  Bleeker, 
  

   and 
  already 
  referred 
  to 
  in 
  my 
  report 
  on 
  that 
  collection, 
  

  

  53. 
  Pilumnus 
  vespertilio 
  (Fabr.). 
  

  

  Five 
  specimens 
  were 
  collected 
  on 
  the 
  beach 
  at 
  Port 
  Molle 
  (Jfos. 
  95, 
  

   103) 
  (first 
  collection). 
  Prom 
  the 
  second 
  collection 
  are 
  retained 
  a 
  

   female 
  from 
  Thursday-Island 
  beach 
  (No. 
  167), 
  a 
  male 
  from 
  a 
  

   coral-reef 
  at 
  Clairraont 
  (No. 
  151), 
  a 
  female 
  from 
  West 
  Island, 
  

   Prince 
  of 
  Wales 
  Channel 
  (No. 
  149), 
  and 
  a 
  small 
  female 
  from 
  Uundas 
  

   Straits, 
  N.W. 
  Australia, 
  ITfms. 
  (No. 
  161). 
  In 
  nearly 
  all 
  the 
  hairs 
  

   with 
  which 
  the 
  carapace 
  is 
  clothed 
  are 
  of 
  a 
  cinereous 
  colour. 
  Hess 
  

   mentions 
  its 
  occurrence 
  at 
  Sydney. 
  It 
  is 
  said 
  by 
  Mr. 
  Haswell 
  to 
  

   be 
  common 
  in 
  Australia 
  on 
  coral-reefs. 
  

  

  A 
  yerj 
  large 
  series 
  of 
  specimens 
  of 
  this 
  widely 
  distributed 
  species 
  

   is 
  in 
  the 
  Museum 
  collection, 
  from 
  the 
  following 
  localities 
  : 
  — 
  M;ui- 
  

   ritius 
  (Old 
  Collection) 
  ; 
  Seychelles 
  (Dr. 
  E. 
  P. 
  Wright) 
  ; 
  Java 
  (coll. 
  

   Dr. 
  Bleeker) 
  ; 
  Timor 
  Laut 
  (H. 
  0. 
  Forbes) 
  ; 
  N.W. 
  coast 
  of 
  Australia, 
  

   Nicol 
  Bay 
  (Mr. 
  du 
  Boiday) 
  ; 
  Madjica-Sima 
  group 
  (H.M.^. 
  ' 
  iSama- 
  

   rang,' 
  types 
  of 
  P. 
  ursidus) 
  ; 
  Philippine 
  Islands, 
  Siquijor 
  (Cumiug) 
  ; 
  

   Cumberland 
  Island, 
  Sir 
  C. 
  Hardy's 
  Island 
  (J. 
  B. 
  Jukes); 
  New 
  

   Zealand 
  (Dr. 
  A. 
  Sinclair, 
  R.N.) 
  ; 
  Piji 
  Islands, 
  Vanua 
  Levu, 
  Bau 
  

   (H.M.S. 
  ' 
  Hercdd 
  ') 
  ; 
  Samoa 
  Islands, 
  IJpolu, 
  &c. 
  (Rev. 
  S. 
  J. 
  Whitmee) 
  ; 
  

   New 
  Hebrides 
  (J. 
  Macgillivray) 
  ; 
  besides 
  others 
  without 
  definite 
  or 
  

   well-authenticated 
  localities. 
  

  

  I 
  have 
  in 
  my 
  report 
  on 
  the 
  late 
  Dr. 
  Bleeker's 
  collection 
  of 
  

   Malaysian 
  Crustacea 
  given 
  the 
  principal 
  references 
  to 
  the 
  syuonyma 
  

   of 
  this 
  species. 
  

  

  54. 
  Pilumnus 
  pulcher. 
  (Plate 
  XXII. 
  fig. 
  A.) 
  

  

  In 
  this 
  species 
  the 
  carapace 
  is 
  regularly 
  convex 
  and 
  somewhat 
  

   orbiculate, 
  the 
  antero-lateral 
  margins 
  being 
  as 
  long 
  as 
  the 
  postero- 
  

   lateral 
  and 
  regularly 
  arcuate 
  ; 
  the 
  upper 
  surface 
  of 
  the 
  body 
  and 
  

   legs 
  is 
  rather 
  thinly 
  clothed 
  with 
  very 
  long 
  fulvous 
  hairs, 
  beneath 
  

   which 
  the 
  carapace 
  is 
  granulated 
  ; 
  the 
  median 
  frontal 
  lobes 
  are 
  

   veiy 
  prominent, 
  deflexed, 
  and 
  divided 
  by 
  a 
  very 
  narrow 
  (or 
  closed) 
  

   median 
  fissure 
  ; 
  the 
  orbital 
  margins 
  are 
  denticulated 
  ; 
  between 
  each 
  

   of 
  the 
  four 
  principal 
  spines 
  of 
  the 
  antero-lateral 
  margins 
  are 
  three 
  

   or 
  four 
  scarcely 
  smaller 
  spinules. 
  The 
  pterygostomian 
  regions 
  are 
  

   smooth 
  ; 
  the 
  sternum 
  coarsely 
  punctated. 
  All 
  the 
  segments 
  of 
  the 
  

   postabdomen 
  distinct 
  in 
  both 
  sexes. 
  The 
  basal 
  antennal 
  joints 
  are 
  

   robust 
  and 
  reach 
  to 
  the 
  subfrontal 
  processes 
  ; 
  the 
  merus-joints 
  of 
  

   the 
  outer 
  maxillipedes 
  small 
  and 
  smooth. 
  The 
  chelipedes 
  are 
  mode- 
  

   rately 
  robust, 
  and 
  in 
  the 
  specimens 
  examined 
  nearly 
  of 
  equal 
  size 
  ; 
  

   arm 
  short, 
  trigonous, 
  smooth, 
  with 
  a 
  strong 
  spine 
  near 
  the 
  distal 
  

   end 
  of 
  its 
  upper 
  margin 
  ; 
  wrist 
  granulated 
  externally, 
  with 
  only 
  a 
  

   small 
  spinule 
  near 
  the 
  distal 
  end 
  of 
  its 
  inner 
  margin 
  ; 
  palm 
  with 
  

   three 
  spines 
  on 
  its 
  upper 
  margin 
  (see 
  fig. 
  a), 
  its 
  outer 
  surface 
  

   strongly 
  tuberculated, 
  the 
  tubercles 
  arranged 
  in 
  longitudinal 
  series, 
  

  

  