﻿524 
  COLLECTIONS 
  FROM 
  THE 
  WESTERN 
  INDIAN 
  OCEAN. 
  

  

  the 
  pterj-gostomian 
  region 
  ; 
  the 
  basal 
  antennal 
  joint 
  is 
  slender, 
  but 
  

   not, 
  as 
  in 
  E. 
  aspera, 
  longitudinally 
  sulcated. 
  The 
  chelipedes 
  in 
  the 
  

   single 
  male 
  examined 
  (which 
  is, 
  however, 
  of 
  verj' 
  small 
  size) 
  are 
  

   small 
  and 
  slender 
  ; 
  the 
  merus-joint 
  armed 
  with 
  a 
  longitudinal 
  series 
  

   of 
  small 
  spines 
  and 
  other 
  spines 
  irregularly 
  disposed 
  ; 
  wrist 
  and 
  

   palm 
  also 
  armed 
  on 
  the 
  upper 
  and 
  outer 
  surfaces 
  with 
  numerous 
  

   irregular 
  spines 
  ; 
  palm 
  slender, 
  about 
  twice 
  as 
  long 
  as 
  the 
  fingers, 
  

   which 
  are 
  straight, 
  not 
  denticulated, 
  and 
  meet 
  along 
  their 
  inner 
  

   margins. 
  The 
  merus-joints 
  of 
  the 
  ambulatory 
  legs 
  are 
  armed 
  above 
  

   with 
  a 
  double 
  longitudinal 
  series 
  of 
  small 
  spines, 
  and 
  there 
  are 
  

   spines 
  also 
  on 
  the 
  two 
  following 
  joints. 
  Colour 
  (in 
  spirit) 
  rose- 
  

   pink. 
  Length 
  of 
  the 
  body 
  to 
  the 
  apex 
  of 
  one 
  of 
  the 
  rostral 
  horns 
  in 
  

   the 
  largest 
  specimen 
  (a 
  female) 
  rather 
  over 
  5 
  lines 
  (11 
  millim.) 
  ; 
  

   breadth 
  nearly 
  3 
  lines 
  (H 
  millim.). 
  

  

  There 
  are 
  in 
  the 
  collection 
  four 
  females 
  and 
  a 
  small 
  male, 
  from 
  

   Providence 
  Eeef, 
  24 
  fms. 
  (No. 
  215). 
  

  

  This 
  species 
  is 
  evidently 
  nearly 
  allied 
  to 
  E. 
  Jongimanus, 
  8timpson, 
  

   dredged 
  with 
  Gorgonice 
  at 
  10 
  fms. 
  off 
  the 
  Cape 
  of 
  Good 
  Hope 
  *, 
  

   which 
  is 
  only 
  known 
  to 
  me 
  by 
  the 
  short 
  Latin 
  diagnosis 
  of 
  its 
  

   author 
  ; 
  but 
  it 
  is 
  distinguished 
  not 
  merely 
  by 
  the 
  much 
  shorter 
  

   rostral 
  spines 
  and 
  chelipedes 
  (which 
  may 
  vary 
  with 
  age), 
  but 
  also 
  

   by 
  the 
  absence 
  of 
  teeth 
  on 
  the 
  branchial 
  regions 
  and 
  posterior 
  margin 
  

   of 
  the 
  carapace, 
  and 
  the 
  non-carinated 
  ambulatory 
  legs. 
  Nothing 
  is 
  

   said 
  by 
  Stimpson 
  of 
  the 
  form 
  of 
  the 
  Qattcned 
  pajyilhe 
  of 
  the 
  cara])ace, 
  

   nor 
  does 
  he 
  mention 
  the 
  existence 
  of 
  the 
  cardiac 
  spine 
  or 
  of 
  the 
  

   spines 
  on 
  the 
  wrist 
  and 
  palm 
  of 
  the 
  chelipedes, 
  &c. 
  As 
  in 
  his 
  species, 
  

   the 
  upper 
  orbital 
  fissure 
  is 
  closed 
  in 
  E. 
  stimpsonii. 
  

  

  Evrynome 
  erosa,A. 
  M. 
  -Edwards 
  f, 
  from 
  Samoa 
  (Upolu), 
  is 
  a 
  much 
  

   broader 
  species, 
  with 
  less 
  distinctly 
  spinose 
  legs, 
  and 
  the 
  flattened 
  

   prominences 
  of 
  the 
  carapace 
  are 
  smaller 
  and 
  very 
  diffierent 
  in 
  form 
  

   and 
  position. 
  

  

  11. 
  Micippa 
  thalia, 
  Ilerhst, 
  var. 
  haani, 
  Stimpson. 
  

  

  A 
  small 
  male 
  collected 
  at 
  Providence 
  Island, 
  19 
  fms. 
  (No. 
  217), 
  

   seems 
  to 
  belong 
  here. 
  An 
  adult 
  male, 
  closely 
  resembling 
  De 
  Haan's 
  

   figure, 
  is 
  in 
  the 
  British-]\Iuseum 
  collection 
  from 
  Mozambique 
  {Prof. 
  

   Bianconi), 
  designated 
  " 
  J\Jidp2)a 
  cornuta, 
  Eiauconi," 
  and 
  a 
  small 
  

   male 
  from 
  Pa-tchu-San 
  {H.M.tS. 
  ' 
  Samarang'). 
  

  

  This 
  variety 
  (for 
  I 
  can 
  scarcely 
  regard 
  it 
  as 
  specifically 
  distinct) 
  

   is 
  mainly 
  distinguished 
  from 
  the 
  species 
  designated 
  3/. 
  thalia 
  in 
  the 
  

   Museum 
  collection 
  by 
  having 
  a 
  prominent 
  supraocular 
  sjnne, 
  and 
  

   by 
  the 
  much 
  greater 
  prominence 
  of 
  the 
  s])ines 
  on 
  the 
  gastiic 
  and 
  

   branchial 
  regions 
  and 
  of 
  the 
  lateral 
  margins 
  in 
  the 
  adult 
  ; 
  in 
  the 
  

   younger 
  specimens, 
  however, 
  all 
  except 
  the 
  supraocular 
  spines 
  are 
  

   very 
  small. 
  As 
  the 
  supraocular 
  spines 
  seem 
  to 
  be 
  referred 
  to 
  in 
  

   Herbst's 
  original 
  description 
  of 
  M. 
  thalia, 
  they 
  cannot 
  be 
  cited 
  as 
  

  

  * 
  Proc. 
  Acad. 
  Nat. 
  Sei. 
  Pliilad. 
  p. 
  219 
  (1857). 
  

  

  t 
  Journ. 
  Mus. 
  Godeffroy, 
  i. 
  p. 
  78, 
  pi. 
  xii. 
  fig. 
  1 
  (1873). 
  

  

  