﻿212 
  COLLECTIONS 
  FROM 
  MELANESIA. 
  

  

  joint 
  longitudinally 
  canaliciilated, 
  and 
  the 
  merus 
  truncated 
  at 
  its 
  

   distal 
  end, 
  and 
  with 
  the 
  autcro-external 
  angle 
  little 
  prominent. 
  

   The 
  chelipedes 
  are 
  moderately 
  robust 
  ; 
  merus 
  or 
  arm 
  veiy 
  short, 
  

   trigonous 
  ; 
  carpus 
  or 
  wrist 
  nearly 
  as 
  large 
  as 
  the 
  merus, 
  with 
  a 
  

   rather 
  prominent 
  tooth 
  on 
  its 
  inner 
  margin, 
  and 
  its 
  upper 
  and 
  outer 
  

   surfaces 
  marked 
  with 
  raised 
  reticulating 
  or 
  anastomosing 
  granulated 
  

   lines 
  or 
  ridges 
  ; 
  palm 
  longer 
  than 
  the 
  wrist, 
  with 
  somewhat 
  similar 
  

   sculpture 
  on 
  the 
  upper 
  surface, 
  which 
  has 
  also 
  two 
  longitudinal 
  de- 
  

   pressions 
  ; 
  on 
  the 
  outer 
  surface 
  the 
  granulations 
  (on 
  the 
  larger 
  

   chelipede) 
  are 
  almost 
  wholly 
  obliterated, 
  but 
  in 
  the 
  smaller 
  cheli- 
  

   pede 
  (which 
  is 
  the 
  left 
  in 
  the 
  two 
  males 
  I 
  have 
  examined) 
  they 
  

   cover 
  the 
  whole 
  of 
  the 
  outer 
  surface 
  ; 
  the 
  inner 
  surface 
  of 
  the 
  palms 
  

   are 
  smooth 
  ; 
  fiugers 
  purplish 
  brown, 
  the 
  coloration 
  not 
  extending 
  

   over 
  any 
  part 
  of 
  the 
  inner 
  or 
  outer 
  surface 
  of 
  the 
  palms. 
  The 
  

   mobile 
  finger 
  is 
  canaliculated 
  above, 
  and 
  has 
  a 
  very 
  prominent 
  tooth 
  

   on 
  its 
  inner 
  margin 
  at 
  base. 
  Ambulatory 
  legs 
  of 
  moderate 
  length 
  ; 
  

   merus-joints 
  nearly 
  smooth, 
  but 
  with 
  their 
  upper 
  margins 
  thin- 
  

   edged 
  and 
  almost 
  carinated 
  ; 
  the 
  two 
  following 
  joints 
  are 
  roughened, 
  

   and 
  marked 
  on 
  the 
  sides 
  with 
  longitudinal 
  depressions 
  ; 
  terminal 
  

   joints 
  clothed 
  with 
  a 
  dense 
  velvety 
  pubescence. 
  The 
  colour 
  (of 
  spe- 
  

   cimens 
  preserved 
  in 
  spirit) 
  is 
  a 
  pale 
  yellowish 
  brown. 
  Length 
  of 
  

   the 
  carapace 
  of 
  the 
  largest 
  specimen 
  (a 
  male) 
  about 
  7| 
  lines 
  

   (16 
  millim.), 
  greatest 
  width 
  nearly 
  11 
  lines 
  (23 
  millim.). 
  

  

  A 
  male 
  and 
  female 
  are 
  in 
  the 
  collection 
  from 
  Port 
  MoUe, 
  obtained 
  

   on 
  the 
  sandy 
  beach 
  (Nos. 
  95, 
  103), 
  and 
  a 
  male 
  of 
  larger 
  size 
  from 
  

   Port 
  Curtis, 
  7-19 
  fms. 
  (No. 
  85). 
  In 
  the 
  female 
  the 
  outer 
  surfaces 
  

   of 
  both 
  palms 
  are 
  vermiculated, 
  and 
  the 
  fingers 
  are 
  pale 
  purplish. 
  

  

  A 
  male 
  is 
  in 
  the 
  British-Museum 
  collection 
  from 
  Facing 
  Island, 
  

   Port 
  Curtis, 
  obtained 
  under 
  stones 
  at 
  low 
  water 
  (J. 
  IlacgilUvrm/, 
  

   H.M.S. 
  'Rattlesnake'). 
  

  

  This 
  species 
  has 
  much 
  the 
  aspect 
  of 
  a 
  Leptodius, 
  and 
  is 
  distin- 
  

   guished 
  from 
  all 
  with 
  which 
  I 
  am 
  acquainted 
  by 
  the 
  armature 
  of 
  

   the 
  carapace 
  and 
  chelipedes. 
  It 
  bears 
  a 
  very 
  considerable 
  resem- 
  

   blance 
  to 
  a 
  species 
  from 
  Marseilles 
  in 
  the 
  Museum 
  collection 
  (Coll. 
  

   Leach), 
  referred 
  by 
  Leach, 
  but 
  wrongly, 
  to 
  Xantho 
  jwressa 
  of 
  Olivi*, 
  

   and 
  designated 
  by 
  White 
  (in 
  manuscript) 
  X. 
  confusus, 
  in 
  which, 
  

   however, 
  there 
  are 
  no 
  transverse 
  granulated 
  lines 
  on 
  the 
  carapace, 
  

   which 
  is 
  punctulated 
  anteriorly. 
  I 
  have 
  much 
  pleasure 
  in 
  naming 
  

   it 
  after 
  the 
  late 
  Mr. 
  Macgillivray, 
  by 
  whom 
  a 
  specimen 
  was 
  collected, 
  

   and 
  by 
  whose 
  exertions 
  the 
  carcinological 
  collections 
  of 
  the 
  British 
  

   Museum 
  have 
  been 
  so 
  much 
  benefited. 
  

  

  X. 
  hirtipes, 
  M.-Edwards, 
  to 
  which 
  is 
  referred 
  a 
  specimen 
  without 
  

   special 
  locality 
  in 
  the 
  Museum 
  collection, 
  has 
  some 
  indications 
  of 
  

   raised 
  lines 
  upon 
  the 
  carapace, 
  but 
  has 
  a 
  much 
  less 
  prominent 
  

   straighter 
  front. 
  

  

  43. 
  Cycloxanthus 
  lineatus, 
  A. 
  M.-Ediv. 
  

   To 
  this 
  species 
  are 
  referred, 
  though 
  with 
  some 
  hesitation, 
  two 
  

   * 
  'Zoologia 
  Adriatica,' 
  p. 
  48, 
  pi. 
  ii. 
  fig. 
  3 
  (1792). 
  

  

  