﻿cHtrsTAcE.v. 
  227 
  

  

  CRYPTOCCELOMA, 
  gen, 
  nov. 
  

  

  Carapace 
  transverse, 
  nearly 
  flat 
  above, 
  with 
  the 
  antero-lateral 
  

   margins 
  much 
  shorter 
  than 
  the 
  postero-lateral, 
  and 
  forming 
  with 
  

   the 
  apparent 
  frontal 
  margin 
  (as 
  viewed 
  from 
  above) 
  an 
  unbroken 
  

   curve. 
  Epistoma 
  iiai'row-transverse. 
  Palate 
  or 
  endostome 
  with 
  

   the 
  longitudinal 
  ridges 
  nearly 
  obsolete. 
  Orbits 
  transverse, 
  with 
  the 
  

   margins 
  subentire, 
  not 
  visible 
  from 
  above, 
  but 
  concealed 
  beneath 
  the 
  

   projecting 
  anterior 
  margin 
  of 
  the 
  carapace 
  (see 
  Plate 
  XXIII. 
  fig. 
  A). 
  

   Abdomen 
  of 
  female 
  7-jointed. 
  The 
  basal 
  antennal 
  joint 
  reaches 
  to 
  

   the 
  subfrontal 
  process, 
  and 
  partly 
  occupies 
  the 
  inner 
  orbital 
  hiatus. 
  

   Outer 
  maxillipcdes 
  with 
  the 
  merus-joint 
  quadrate. 
  Chelipedes 
  sub- 
  

   equal 
  and 
  of 
  moderate 
  size. 
  Ambulatory 
  legs 
  compressed. 
  

  

  63. 
  Cryptocceloma 
  fimbriatum. 
  (Plate 
  XXIII. 
  fig. 
  A.) 
  

  

  Pilumnus 
  finibriatus, 
  M.-Eclwards, 
  Hist. 
  Nat. 
  Crust, 
  i. 
  p. 
  416 
  (1834) 
  ? 
  ; 
  

   Haswell, 
  Cat. 
  Austr. 
  Crust, 
  p. 
  66, 
  pi. 
  i. 
  fig. 
  4 
  (1882). 
  

  

  The 
  carapace 
  is 
  transverse, 
  its 
  upper 
  surface 
  nearly 
  flat 
  ; 
  the 
  antero- 
  

   lateral 
  margins 
  are 
  much 
  shorter 
  than 
  the 
  postero-lateral, 
  and 
  armed 
  

   only 
  with 
  one 
  or 
  two 
  inconspicuous 
  granules 
  or 
  spinules 
  ; 
  the 
  pos- 
  

   tero-lateral 
  margins 
  are 
  nearly 
  straight, 
  and 
  slightly 
  convergent 
  

   posteriorly 
  ; 
  the 
  upper 
  surface 
  is 
  obscnrely 
  granulated 
  toward 
  the 
  

   lateral 
  margins, 
  and 
  the 
  cervical 
  suture 
  is 
  faintly 
  but 
  distinctly 
  

   defined. 
  The 
  apparent 
  frontal 
  margin 
  is 
  thin, 
  entire, 
  and 
  forms 
  a 
  

   continuous 
  and 
  unbroken 
  line 
  with 
  the 
  antero-lateral 
  margins, 
  the 
  

   orbits 
  being 
  altogether 
  inferior. 
  The 
  margin 
  thus 
  formed 
  is 
  bordered 
  

   with 
  a 
  thick 
  fringe 
  of 
  very 
  close-set 
  cinereous 
  hairs, 
  beneath 
  which 
  

   are 
  much 
  longer 
  hairs 
  of 
  a 
  yellowish 
  hue 
  ; 
  the 
  real 
  front, 
  however, 
  

   is 
  narrow-transverse, 
  nearly 
  vertically 
  deflexed, 
  with 
  its 
  anterior 
  

   margin 
  arcuated 
  and 
  having 
  a 
  small 
  median 
  notch. 
  The 
  eyes 
  lie 
  

   closely 
  within 
  the 
  transverse 
  inferior 
  orbits, 
  whose 
  margins 
  are 
  

   nearly 
  entire. 
  The 
  epistoma 
  is 
  narrow-transverse 
  ; 
  very 
  faint 
  indi- 
  

   cations 
  exist 
  of 
  longitudinal 
  palatal 
  ridges. 
  All 
  the 
  segments 
  of 
  

   the 
  postabdomen 
  (which 
  is 
  rather 
  narrow 
  in 
  the 
  female) 
  are 
  distinct 
  ; 
  

   the 
  first 
  segment 
  only 
  reaches 
  to 
  the 
  bases 
  of 
  the 
  fifth 
  ambulatory 
  

   legs. 
  The 
  antennules 
  are 
  transverse 
  ; 
  the 
  basal 
  antennal 
  joint 
  just 
  

   attains 
  to 
  the 
  subfrontal 
  lobe, 
  and 
  partly 
  occupies 
  the 
  inner 
  orbital 
  

   hiatus. 
  The 
  ischium-joint 
  of 
  the 
  rather 
  broad 
  outer 
  maxillipcdes 
  ia 
  

   but 
  little 
  longer 
  than 
  the 
  merus-joint, 
  which 
  is 
  nearly 
  quadrate, 
  but 
  

   shallow-excavate 
  at 
  its 
  antero-internal 
  angle 
  at 
  the 
  place 
  of 
  articula- 
  

   tion 
  with 
  the 
  next 
  joint 
  ; 
  theexognath 
  is 
  narrow, 
  straight, 
  and 
  just 
  

   reaches 
  to 
  the 
  distal 
  end 
  of 
  the 
  merus. 
  The 
  chelipedes 
  are 
  subequal, 
  

   the 
  merus 
  trigonous 
  and 
  very 
  short 
  ; 
  the 
  carpus 
  granulated 
  above, 
  

   with 
  a 
  small 
  tooth 
  on 
  its 
  inner 
  margin 
  near 
  the 
  distal 
  end, 
  the 
  outer 
  

   margin 
  fringed 
  with 
  very 
  long 
  fulvous 
  hairs 
  ; 
  similar 
  hairs 
  border 
  

   the 
  upper 
  surface 
  of 
  the 
  palm 
  and 
  mobile 
  finger 
  ; 
  the 
  palm 
  is 
  granu- 
  

   lated 
  externally, 
  and 
  somewhat 
  compressed 
  ; 
  fingers 
  rather 
  obscurely 
  

   granulated 
  on 
  their 
  inner 
  margins 
  and 
  acute 
  at 
  the 
  apices, 
  with 
  

  

  a2 
  

  

  