﻿CKTJSTACEA, 
  287 
  

  

  which 
  is 
  distingiiished 
  hy 
  having 
  a 
  small 
  but 
  well-developed 
  spinule 
  

   on 
  the 
  outer 
  side 
  of 
  the 
  antennal 
  scale 
  at 
  base, 
  and 
  the 
  fingers 
  of 
  

   the 
  smaller 
  chelipede 
  slender, 
  arcuated, 
  considerably 
  longer 
  than 
  

   the 
  palm, 
  thickly 
  clothed 
  with 
  long 
  hair 
  on 
  their 
  inner 
  margins, 
  and 
  

   having 
  between 
  them 
  an 
  interspace 
  when 
  closed. 
  In 
  the 
  adult 
  the 
  

   fingers 
  are 
  sometimes 
  elongated 
  to 
  a 
  remarkable 
  degree, 
  three 
  times 
  

   as 
  long 
  as 
  the 
  palm 
  in 
  one 
  specimen. 
  This 
  form 
  I 
  propose 
  to 
  

   designate 
  Alplwus 
  rjracilidigitus. 
  

  

  C'nmgon 
  monopodium^ 
  Bosc 
  *, 
  is 
  very 
  possibly 
  this 
  or 
  an 
  allied 
  

   species. 
  As, 
  however, 
  it 
  is 
  impossible 
  to 
  identify 
  that 
  author's 
  brief 
  

   description 
  and 
  rude 
  figiire 
  as 
  given 
  in 
  his 
  second 
  edition 
  (1830) 
  with 
  

   any 
  species 
  with 
  certainty, 
  and 
  as 
  his 
  designation 
  has 
  never 
  been 
  

   adopted 
  by 
  any 
  subsequent 
  writer, 
  I 
  prefer 
  to 
  retain 
  Audouin's 
  name 
  

   A. 
  edwarclsii, 
  about 
  which 
  there 
  is 
  no 
  uncertainty 
  and 
  which 
  has 
  

   been 
  used 
  by 
  several 
  authors 
  of 
  repute. 
  I 
  have 
  never 
  seen 
  the 
  first 
  

   edition 
  of 
  Bosc's 
  work. 
  

  

  Both 
  the 
  Alplieus 
  edwardsii, 
  as 
  described 
  by 
  Dana 
  from 
  Cape- 
  

   Verd 
  specimens, 
  and 
  the 
  yi. 
  pacificus, 
  Dana, 
  from 
  the 
  Sandwich 
  

   Islands, 
  diff'er 
  in 
  having 
  the 
  second 
  joint 
  of 
  the 
  carpus 
  of 
  the 
  second 
  

   pair 
  of 
  legs 
  much 
  shorter 
  than 
  the 
  first 
  joint, 
  but 
  are 
  probably 
  mere 
  

   varieties 
  of 
  the 
  typical 
  A. 
  edtvardsii. 
  

  

  The 
  species 
  I 
  described 
  from 
  the 
  Samoa 
  Islands 
  as 
  A. 
  lineifer 
  f 
  is 
  

   allied 
  to 
  A 
  edwardsii, 
  biit 
  may 
  be 
  distinguished 
  by 
  the 
  smoother 
  

   chelipede 
  and 
  the 
  existence 
  of 
  a 
  well-developed 
  spine 
  on 
  the 
  outer 
  

   side 
  of 
  the 
  peduncles 
  of 
  the 
  antennae. 
  It 
  may 
  perhaps 
  be 
  the 
  young 
  

   oi 
  Alpheus 
  imrvirostris, 
  Dana, 
  from 
  the 
  Balabac 
  Straits 
  ; 
  but 
  the 
  first 
  

   joint 
  of 
  the 
  carpus 
  of 
  the 
  second 
  pair 
  of 
  logs 
  is 
  relatively 
  shorter, 
  

   and 
  the 
  large 
  chela 
  of 
  the 
  first 
  pair 
  relatively 
  narrower 
  and 
  more 
  

   elongated 
  than 
  in 
  Dana's 
  figure. 
  

  

  6. 
  Alplieus 
  ohesomanus, 
  Dana. 
  

  

  A 
  small 
  example 
  from 
  Port 
  Molle, 
  5-12 
  fms. 
  (No. 
  118), 
  is 
  re- 
  

   ferred 
  to 
  this 
  species. 
  

  

  Several 
  small 
  specimens 
  are 
  in 
  the 
  British-Museum 
  collection 
  from 
  

   Ovalau, 
  Fijis 
  {H.M.S. 
  ^Herald'). 
  Dana's 
  types 
  were 
  also 
  from 
  the 
  

   Fiji 
  Islands. 
  Dr. 
  F. 
  Eichters 
  has 
  recently 
  recorded 
  this 
  species 
  

   from 
  the 
  Mauritius 
  (Isle 
  des 
  Fouquets). 
  

  

  This 
  species 
  is 
  remarkable 
  on 
  account 
  of 
  the 
  turgid 
  form 
  of 
  the 
  

   larger 
  chelipede 
  and 
  the 
  great 
  elongation 
  of 
  the 
  second 
  carpal 
  joint 
  

   of 
  the 
  second 
  pair 
  of 
  legs. 
  

  

  7. 
  Alplieus 
  gracilipes, 
  Stimpson. 
  

  

  I 
  thus 
  designate 
  a 
  specimen 
  from 
  Port 
  Molle, 
  obtained 
  on 
  the 
  

   beach 
  (No. 
  U5), 
  and 
  another 
  small 
  example 
  from 
  Flinders 
  Island, 
  

  

  * 
  Hist. 
  Nat. 
  Crust, 
  ii. 
  p. 
  %, 
  pi. 
  xiii. 
  fig. 
  2 
  (180l')- 
  

   t 
  Ann. 
  & 
  Mag. 
  Nat. 
  Hist. 
  ser. 
  4, 
  xvi. 
  p. 
  343 
  (1875). 
  

  

  