﻿520 
  COr-LECTfONS 
  FROM 
  THE 
  WESTERN 
  INDIAN 
  OCEAN. 
  

  

  DECAPODA. 
  

  

  BRACHYURA. 
  

   1. 
  AcliseTis 
  laevioculis. 
  (Plate 
  XLVI. 
  fig. 
  A.) 
  

  

  I 
  thus 
  doubtfully 
  designate 
  a 
  male 
  specimen 
  from 
  the 
  Seychelles, 
  

   4-12 
  fms., 
  which 
  in 
  many 
  of 
  its 
  characters 
  closely 
  resembles 
  A.lorina 
  

   (Ad. 
  & 
  White*), 
  from 
  Mindanao 
  and 
  Borneo, 
  but 
  is 
  distinguished 
  by 
  

   the 
  absence 
  of 
  the 
  promiuent 
  spines 
  or 
  tubercles 
  on 
  the 
  gastric 
  and 
  

   cardiac 
  regions 
  of 
  the 
  carapace 
  (which 
  are 
  here 
  replaced 
  by 
  very 
  

   small 
  tubercles), 
  the 
  nearly 
  terete 
  eye-peduncles 
  (which 
  iu 
  A. 
  lorina 
  

   are 
  armed 
  with 
  a 
  spine 
  or 
  tubercle), 
  and 
  the 
  much 
  shorter 
  ambula- 
  

   tory 
  legs, 
  which 
  are 
  scarcely 
  more 
  than 
  twice 
  the 
  length 
  of 
  the 
  

   carapace, 
  and 
  have 
  the 
  dactyli, 
  even 
  of 
  the 
  fifth 
  pair, 
  very 
  little 
  

   falcated, 
  whereby 
  this 
  species 
  may 
  be 
  at 
  once 
  distinguished 
  from 
  

   A. 
  crancliii 
  and 
  A. 
  lacertosus. 
  A. 
  tuherculatus, 
  Miers, 
  has 
  the 
  cara- 
  

   pace 
  much 
  less 
  constricted 
  behind 
  the 
  eyes, 
  a 
  prominent 
  cardiac 
  spine, 
  

   &c. 
  I 
  should 
  note 
  that 
  in 
  specimens 
  of 
  A. 
  lorina 
  in 
  the 
  Museum 
  

   collection 
  the 
  spines 
  of 
  the 
  carapace 
  are 
  much 
  less 
  prominent 
  than 
  

   in 
  the 
  figure 
  of 
  Adams 
  and 
  White. 
  

  

  2. 
  Camposcia 
  retusa, 
  Latr. 
  

  

  Two 
  females 
  of 
  this 
  common 
  Oriental 
  species 
  were 
  obtained 
  on 
  

   the 
  beach 
  between 
  tide-marks 
  at 
  Mozambi(]ue 
  (No. 
  224), 
  a 
  locality 
  

   whence 
  Dr. 
  Hilgendorf 
  has 
  already 
  recorded 
  it, 
  I 
  have 
  already 
  

   referred 
  to 
  its 
  distribution 
  on 
  p. 
  189. 
  

  

  3. 
  Huenia 
  pacifica, 
  Miers. 
  

  

  A 
  male 
  from 
  the 
  Seychelles, 
  4-12 
  fms. 
  (No. 
  194), 
  closely 
  resembles 
  

   the 
  type 
  specimen 
  of 
  this 
  species 
  from 
  the 
  Eijis 
  in 
  the 
  characteris- 
  

   tically 
  long 
  and 
  slender 
  rostrum 
  and 
  in 
  all 
  other 
  characters. 
  The 
  

   occurrence 
  of 
  H. 
  pucijica 
  at 
  the 
  Seychelles 
  suggests 
  the 
  possibility 
  

   of 
  this 
  form 
  being 
  identical 
  with 
  H. 
  c/randidieri, 
  A. 
  M.-Edwards, 
  

   from 
  Zanzibar, 
  founded 
  upon 
  a 
  female 
  example 
  only 
  f. 
  I 
  have, 
  

   however, 
  already 
  noted 
  the 
  distinctions 
  which 
  exist 
  between 
  M.- 
  

   Edwards's 
  figures 
  of 
  H. 
  c/randidieri 
  and 
  the 
  female 
  from 
  the 
  Eijis 
  

   in 
  the 
  Museum 
  collection 
  which 
  1 
  refer 
  to 
  H. 
  jmcijica. 
  With 
  the 
  

   limited 
  material 
  available 
  for 
  comparison, 
  the 
  two 
  forms 
  certainly 
  

   cannot 
  be 
  united 
  ; 
  but 
  perhaps 
  the 
  examination 
  of 
  a 
  sufiicient 
  series 
  

   would 
  demonstrate 
  the 
  necessity 
  of 
  regarding 
  both 
  as 
  mere 
  varieties 
  

   of 
  the 
  long-known 
  H. 
  protens, 
  with 
  which 
  they 
  may 
  be 
  linked 
  through 
  

   the 
  form 
  designated 
  by 
  AVhite 
  H. 
  heraldica, 
  which 
  has 
  been 
  already 
  

   cited 
  in 
  the 
  first 
  part 
  of 
  this 
  Report 
  as 
  synonymous 
  with 
  M. 
  proteus. 
  

  

  * 
  Zool. 
  ' 
  Samaraug,' 
  Crust, 
  p. 
  3, 
  pi. 
  ii. 
  fig. 
  2 
  (184S). 
  

  

  t 
  Ann. 
  Soc. 
  Entam. 
  France, 
  ser. 
  4, 
  v. 
  p. 
  143, 
  pi. 
  iv. 
  fig. 
  2 
  (1865). 
  

  

  