﻿292 
  COLLECTIO^^S 
  from. 
  MELANESIA. 
  

  

  beyond 
  the 
  rostrum 
  and 
  bear 
  two 
  flagella, 
  whereof 
  one 
  is 
  consider- 
  

   ably 
  thickened 
  and 
  is 
  bipartite 
  at 
  its 
  extremity 
  ; 
  the 
  antennal 
  

   peduncles 
  are 
  short, 
  with 
  the 
  last 
  joint 
  longer 
  than 
  the 
  preceding 
  ; 
  

   their 
  basal 
  scales 
  ovate, 
  much 
  longer 
  than 
  the 
  peduncles, 
  and 
  with- 
  

   out 
  spinules 
  ; 
  rounded 
  and 
  ciliated 
  at 
  the 
  distal 
  ends 
  ; 
  the 
  tlagella 
  

   are 
  shorter 
  than 
  the 
  animal, 
  with 
  the 
  joints 
  nearly 
  naked 
  ; 
  the 
  two 
  

   last 
  joints 
  of 
  the 
  outer 
  maxillipcdes 
  are 
  slender, 
  setose, 
  and 
  to- 
  

   gether 
  little 
  longer 
  than 
  the 
  antepenultimate 
  joint, 
  which, 
  like 
  the 
  

   preceding, 
  is 
  moderately 
  dilated. 
  The 
  anterior 
  legs 
  are 
  slender, 
  with 
  

   the 
  wrist 
  elongated 
  and 
  about 
  twice 
  as 
  long 
  as 
  the 
  palm 
  and 
  fingers 
  

   taken 
  together 
  ; 
  the 
  second 
  chelipedes, 
  although 
  larger 
  than 
  the 
  pre- 
  

   ceding, 
  are 
  yet 
  slenderer 
  than 
  in 
  many 
  allied 
  forms 
  ; 
  the 
  joints 
  are 
  

   without 
  spines 
  ; 
  the 
  right 
  leg 
  a 
  very 
  little 
  more 
  robust 
  than 
  the 
  left 
  ; 
  

   the 
  merus 
  or 
  arm 
  about 
  as 
  long 
  as 
  the 
  ischium 
  and 
  little 
  longer 
  

   than 
  the 
  carpus, 
  which 
  is 
  rounded 
  above 
  and 
  below 
  and 
  not 
  half 
  as 
  

   long 
  as 
  the 
  palm 
  ; 
  the 
  palm 
  is 
  smooth, 
  rounded 
  above 
  and 
  below, 
  

   very 
  slightly 
  compressed 
  ; 
  the 
  fingers 
  rather 
  more 
  than 
  half 
  the 
  

   length 
  of 
  the 
  palm, 
  with 
  thin 
  inner 
  edges, 
  incurved 
  and 
  acute 
  at 
  the 
  

   tips, 
  and 
  each 
  armed 
  with 
  a 
  tooth 
  near 
  the 
  base 
  on 
  the 
  inner 
  margin, 
  

   that 
  of 
  the 
  dactyl 
  being 
  the 
  larger 
  ; 
  in 
  the 
  left 
  chelij^ede 
  the 
  teeth 
  

   are 
  not 
  developed. 
  The 
  three 
  following 
  legs 
  are 
  slender, 
  unarmed, 
  

   and 
  terminate 
  in 
  a 
  small 
  simple 
  curved 
  claw. 
  The 
  uropoda 
  reach 
  a 
  

   little 
  beyond 
  the 
  distal 
  end 
  of 
  the 
  terminal 
  postabdominal 
  segment 
  ; 
  

   their 
  bases 
  are 
  armed 
  above 
  with 
  a 
  spine 
  ; 
  the 
  rami 
  are 
  ovate 
  and 
  

   ciliated, 
  the 
  outer 
  a 
  little 
  broader 
  than 
  the 
  inner. 
  Colour 
  (in 
  spirit) 
  

   light 
  yellowish. 
  Length 
  of 
  the 
  single 
  specimen 
  (a 
  female) 
  about 
  

   10 
  lines 
  (21 
  millim.), 
  of 
  second 
  chelipede 
  about 
  7 
  lines 
  (15 
  millim.). 
  

  

  The 
  secojid. 
  specimen 
  was 
  found 
  in 
  the 
  interior 
  of 
  a 
  shell 
  of 
  a 
  

   species 
  of 
  Finna, 
  obtained 
  on 
  the 
  coral-reefs 
  at 
  Port 
  Molle, 
  and 
  

   bears 
  ova. 
  

  

  This 
  species 
  in 
  its 
  general 
  appearance 
  and 
  in 
  many 
  details, 
  as 
  in 
  

   the 
  edentulous 
  rostrum, 
  ovate 
  antennal 
  scales, 
  and 
  the 
  form 
  of 
  the 
  

   chelipedes, 
  bears 
  a 
  striking 
  resemblance 
  to 
  Anchistia 
  awantiaca, 
  

   Dana*, 
  from 
  the 
  Fijis, 
  but 
  differs 
  in 
  the 
  form 
  of 
  the 
  outer 
  maxilli- 
  

   pcdes 
  and 
  of 
  the 
  dactyli 
  of 
  the 
  ambulatory 
  legs, 
  in 
  which 
  it 
  rather 
  

   resembles 
  Hcnjnlius. 
  As 
  this 
  is 
  the 
  only 
  spirit-specimen, 
  I 
  have 
  

   not 
  ventured 
  to 
  dissect 
  the 
  buccal 
  organs 
  to 
  ascertain 
  the 
  absence 
  

   of 
  a 
  mandibular 
  palpus 
  ; 
  but 
  there 
  can, 
  I 
  think, 
  be 
  little 
  doubt 
  that 
  

   this 
  species 
  is 
  rightly 
  placed 
  with 
  HarpUius 
  and 
  Anchistia. 
  

  

  There 
  is 
  in 
  the 
  British-Museum 
  collection 
  a 
  dried 
  example 
  from 
  

   Shark 
  Bay, 
  \y. 
  Australia 
  {F. 
  M. 
  Rapier, 
  H.M.S. 
  ' 
  Herald 
  '), 
  which 
  

   probably 
  belongs 
  here. 
  This 
  specimen 
  also 
  was 
  found 
  in 
  the 
  interior 
  

   of 
  a 
  Pin?ia-shel\. 
  

  

  Another 
  closely 
  allied 
  species 
  exists 
  in 
  the 
  Museum 
  collection, 
  

   represented 
  by 
  a 
  single 
  dried 
  specimen 
  from 
  the 
  interior 
  of 
  Tridaena 
  

   (H.3I.S. 
  'Herald'), 
  without 
  precise 
  indication 
  of 
  locality, 
  which 
  

   differs 
  in 
  the 
  form 
  of 
  the 
  rostrum 
  (which 
  appears 
  acute 
  in 
  a 
  lateral 
  

   view), 
  and 
  in 
  having 
  a 
  spine 
  on 
  the 
  anterior 
  margin 
  of 
  the 
  carapace 
  

  

  * 
  U.S. 
  Expl. 
  Exp. 
  xiii. 
  Cr. 
  i. 
  p. 
  581, 
  pi. 
  sxxviii. 
  fig. 
  2 
  (1852). 
  

  

  