﻿CRTJSTACEA. 
  549 
  

  

  the 
  lobes 
  but 
  little 
  prominent. 
  The 
  postabdomen 
  has 
  all 
  the 
  seg- 
  

   ments, 
  except 
  the 
  last, 
  coalescent. 
  The 
  inferior 
  surface 
  of 
  the 
  

   carapace 
  is 
  closely 
  granulated. 
  The 
  exognath 
  of 
  the 
  outer 
  maxilli- 
  

   pedcs 
  is 
  rather 
  narrow, 
  with 
  a 
  straight 
  outer 
  margin, 
  and 
  does 
  not 
  

   reach 
  to 
  the 
  distal 
  end 
  of 
  the 
  merus-joint 
  of 
  the 
  endognath. 
  The 
  

   chelipedes 
  are 
  rather 
  small, 
  and 
  arm, 
  wrist, 
  and 
  palm 
  arc 
  closely 
  

   granulated, 
  but 
  otherwise 
  unarmed 
  ; 
  palm 
  not 
  twice 
  as 
  long 
  as 
  the 
  

   wrist, 
  rather 
  turgid 
  : 
  fingers 
  about 
  as 
  long 
  as 
  the 
  palm, 
  slender, 
  and 
  

   meeting 
  along 
  their 
  inner 
  edges. 
  Colour 
  (in 
  spirit) 
  pinkish. 
  Length 
  

   of 
  carapace 
  barely 
  2 
  lines 
  (4: 
  millira.). 
  

  

  This 
  specimen 
  is 
  distinguished 
  from 
  all 
  of 
  the 
  species 
  of 
  this 
  genus 
  

   Avith 
  which 
  I 
  am 
  acquainted 
  by 
  the 
  evenly-granulated 
  carapace 
  and 
  

   the 
  number 
  and 
  disposition 
  of 
  the 
  spines 
  of 
  the 
  lateral 
  and 
  posterior 
  

   margins. 
  If 
  the 
  characters 
  should 
  prove 
  constant, 
  I 
  would 
  propose 
  

   to 
  designate 
  it 
  as 
  Arcania 
  duodecims/iinosa. 
  

  

  Arcania 
  pulchdla 
  *, 
  from 
  the 
  Fijis, 
  which 
  is 
  evidently 
  very 
  

   nearly 
  allied 
  to 
  it, 
  has 
  the 
  lateral 
  margins 
  armed 
  (on 
  each 
  side) 
  

   Avith 
  about 
  seven 
  teeth, 
  the 
  front 
  nearly 
  straight, 
  the 
  regions 
  of 
  the 
  

   carapace 
  strongly 
  mammillated. 
  

  

  71. 
  Ebalia 
  granulata 
  {Rllppell)'^. 
  

  

  Since 
  the 
  original 
  diagnosis 
  is 
  very 
  brief, 
  I 
  append 
  the 
  following 
  

   description 
  : 
  — 
  

  

  The 
  body 
  and 
  legs 
  are 
  everywhere 
  covered 
  with 
  numerous 
  very 
  

   close-set 
  and 
  crowded 
  perliform 
  granules, 
  which 
  are 
  largest 
  on 
  the 
  

   postabdomen 
  and 
  on 
  the 
  merus-joints 
  of 
  the 
  chelipedes 
  ; 
  the 
  cara- 
  

   liace 
  is 
  nearly 
  circular 
  in 
  outline 
  (not 
  rhomboidal), 
  but 
  a 
  little 
  

   broader 
  than 
  long, 
  moderately 
  convex, 
  the 
  gastric 
  and 
  cardiac 
  

   regions 
  defined 
  by 
  faintly 
  indicated 
  lateral 
  sulci. 
  The 
  front 
  is 
  slightly 
  

   concave, 
  and 
  projects 
  less 
  than 
  the 
  buccal 
  cavity, 
  so 
  that 
  the 
  outer 
  

   maxillipedes 
  are 
  just 
  visible 
  in 
  a 
  dorsal 
  view 
  ; 
  the 
  hepatic 
  regions 
  

   are 
  prominent, 
  the 
  lateral 
  margins 
  are 
  slightly 
  sinuated, 
  but 
  not 
  

   lobate 
  or 
  toothed. 
  The 
  postabdomen 
  (of 
  the 
  female 
  ") 
  has 
  all 
  the 
  

   joints, 
  except 
  the 
  first 
  two 
  and 
  the 
  last, 
  coalescent. 
  The 
  eyes 
  are 
  

   closely 
  set 
  in 
  the 
  nearly 
  circular 
  orbits 
  ; 
  the 
  small 
  antennte 
  enter 
  

   the 
  inner 
  orbital 
  hiatus 
  ; 
  the 
  merus-joints 
  of 
  the 
  outer 
  maxillipedes 
  

   are 
  shorter 
  than 
  the 
  ischium-joints 
  ; 
  the 
  rather 
  narrow 
  exognaths 
  

   have 
  a 
  straight 
  outer 
  margin, 
  and 
  do 
  not 
  reach 
  to 
  the 
  distal 
  ends 
  

   of 
  the 
  merus-joints 
  ; 
  the 
  chelipedes 
  (in 
  the 
  female) 
  are 
  rather 
  small, 
  

   the 
  merus-joint 
  or 
  arm 
  has 
  its 
  inner 
  distal 
  angle 
  somewhat 
  pro- 
  

   duced 
  and 
  rounded, 
  but 
  is 
  not 
  toothed 
  ; 
  carpus 
  small, 
  rounded 
  ; 
  palm 
  

   little 
  longer 
  than 
  the 
  carpus, 
  rather 
  turgid 
  ; 
  the 
  fingers 
  are 
  longer 
  

   than 
  the 
  palm, 
  meet 
  along 
  their 
  inner 
  edges, 
  and 
  are 
  slightly 
  in- 
  

   curved 
  at 
  the 
  tips. 
  The 
  ambulatory 
  legs 
  are 
  very 
  slender 
  ; 
  the 
  

   dactyli 
  bear 
  a 
  minute 
  terrainal 
  claw. 
  Colour 
  (in 
  spirit) 
  pinkish. 
  

   Length 
  of 
  carapace 
  about 
  2h 
  lines 
  (5 
  millim.) 
  ; 
  of 
  chelipede 
  (of 
  the 
  

   femalej 
  about 
  Klines 
  (nearly 
  7 
  millim.). 
  

  

  * 
  Ebalia 
  pulchdla, 
  Jouni. 
  Ma?. 
  Godeffror, 
  iv. 
  p. 
  8j, 
  pi. 
  xiii. 
  fig. 
  2 
  (t87o). 
  

  

  