﻿CRUSTACEA. 
  525 
  

  

  distinctively 
  characterizing 
  the 
  variety 
  Jiaani, 
  which 
  is 
  connected 
  

   with 
  M. 
  thalia 
  by 
  insensible 
  gradations. 
  

  

  Specimens 
  referred 
  by 
  Dr. 
  F. 
  llichters 
  to 
  M. 
  thalia, 
  De 
  Haan, 
  

   from 
  Fouquets, 
  may 
  probably 
  belong 
  to 
  this 
  variety 
  ; 
  but 
  the 
  length 
  

   of 
  the 
  supraocular 
  spines 
  is 
  not 
  mentioned. 
  

  

  12. 
  Paramicippa 
  asperimanus. 
  

  

  I 
  thus 
  designate 
  a 
  series 
  of 
  specimens 
  from 
  Providence 
  Island, 
  

   19 
  fms. 
  (No. 
  217), 
  and 
  a 
  small 
  female 
  from 
  the 
  Seychelles, 
  4-12 
  

   fms. 
  (No. 
  194). 
  

  

  These 
  specimens 
  in 
  all 
  their 
  characters 
  so 
  nearly 
  approach 
  the 
  

   typical 
  Paramicippa 
  platypcs, 
  Eiippell, 
  from 
  the 
  Red 
  Sea, 
  of 
  which 
  

   they 
  may 
  prove 
  to 
  be 
  a 
  variety, 
  that 
  a 
  detailed 
  description 
  is 
  scarcely 
  

   needed. 
  They 
  scarcely 
  differ 
  except 
  in 
  the 
  form 
  of 
  the 
  rostrum, 
  

   which 
  is 
  much 
  less 
  deeply 
  emarginatc 
  at 
  its 
  distal 
  extremity, 
  with 
  

   the 
  terminal 
  lobes 
  less 
  acute 
  ; 
  in 
  the 
  slenderer 
  chelipedes 
  of 
  the 
  

   male, 
  whose 
  merus-joint 
  is 
  longer, 
  wrist 
  minutely 
  granulated 
  on 
  

   its 
  inner 
  and 
  outer 
  surface, 
  and 
  palm 
  more 
  elongated, 
  granulated 
  

   on 
  its 
  inner 
  surface 
  and 
  without 
  the 
  characteristic 
  coloration 
  of 
  

   M.p>latypes 
  : 
  and 
  in 
  having 
  the 
  distal 
  extremity 
  of 
  the 
  dilated 
  basal 
  

   antenual 
  joint 
  armed 
  with 
  a 
  series 
  of 
  spinules, 
  which 
  are 
  visible 
  from 
  

   above 
  between 
  the 
  rostrum 
  and 
  the 
  orbital 
  cavity. 
  In 
  this 
  latter 
  

   character 
  this 
  species 
  approaches 
  Micippa 
  pliilyra, 
  Herbst, 
  from 
  

   which 
  it 
  is 
  distinguished 
  by 
  the 
  dilated 
  palms 
  and 
  arcuated 
  fingers 
  

   of 
  the 
  chelipedes 
  in 
  the 
  male 
  and 
  much 
  more 
  deeply 
  emarginate 
  

   front. 
  It 
  seems, 
  in 
  fact, 
  to 
  occupy 
  an 
  intermediate 
  position 
  be- 
  

   tween 
  the 
  two 
  forms 
  — 
  wbich, 
  however, 
  can 
  hardly 
  be 
  conspecific, 
  

   since 
  an 
  adult 
  male 
  in 
  the 
  Museum 
  collection 
  of 
  M. 
  pthih/ra, 
  with 
  

   slender 
  feeble 
  chelipedes, 
  is 
  of 
  larger 
  size 
  than 
  the 
  males 
  with 
  strong 
  

   dilated 
  chelipedes 
  of 
  P. 
  platiipes 
  and 
  P. 
  asperimanus. 
  The 
  specimen 
  

   figured 
  by 
  Eichters 
  * 
  as 
  M. 
  pthihjra, 
  var. 
  latifrons, 
  seems 
  to 
  be 
  an 
  

   adult 
  male 
  Paramicippa 
  platyp)es. 
  I 
  cannot 
  identify 
  P. 
  a!<perimanus 
  

   with 
  any 
  of 
  the 
  " 
  varieties 
  " 
  recently 
  figured 
  by 
  Kossmann 
  f 
  ; 
  the 
  

   variety 
  designated 
  Micippa 
  philyra, 
  var. 
  mascarenica, 
  is 
  distinguished 
  

   by 
  the 
  much 
  deeper 
  notch 
  of 
  the 
  anterior 
  margin 
  of 
  the 
  rostrum, 
  and 
  

   nothing 
  is 
  said 
  of 
  the 
  form 
  of 
  the 
  chelipedes 
  in 
  this 
  form. 
  

  

  The 
  British 
  Museum, 
  since 
  the 
  above 
  was 
  written, 
  has 
  received 
  

   an 
  adult 
  male 
  of 
  very 
  large 
  size 
  from 
  the 
  Mauritius 
  (31. 
  V. 
  cle 
  

   Rohillard), 
  in 
  which 
  the 
  rostrum 
  is 
  as 
  deeply 
  notched 
  as 
  in 
  the 
  typical 
  

   M. 
  platypcs, 
  and 
  the 
  palms 
  of 
  the 
  chelipedes 
  strongly 
  granulated 
  both 
  

   on 
  the 
  inner 
  and 
  outer 
  surfaces. 
  

  

  ENTOMONYX, 
  gen. 
  nov. 
  

   Carapace 
  subpyriform. 
  Rostrum 
  obliquely 
  defloxed 
  and 
  com- 
  

  

  * 
  In 
  Mobius's 
  'Beitriige 
  zur 
  Fauna 
  der 
  Insel 
  Mauritius 
  und 
  der 
  Seychellen 
  ' 
  

   Decapoda, 
  p. 
  142, 
  pi. 
  xvi. 
  figs. 
  1-,'') 
  (1880). 
  

  

  t 
  ' 
  Zool. 
  Ergebnisse 
  .... 
  rothen 
  Mceres,' 
  Brachyura, 
  p. 
  6, 
  pi. 
  iii 
  fio-s 
  1 
  

   3, 
  4, 
  5 
  (1877). 
  ■ 
  ° 
  ■ 
  ' 
  

  

  