﻿CRUSTACEA 
  , 
  239 
  

  

  cides 
  with 
  Dana's 
  description 
  and 
  figure 
  of 
  a 
  specimen 
  from 
  the 
  

   Fijis 
  (see 
  Explor. 
  Exp., 
  Cr. 
  xiii. 
  p. 
  313, 
  pi. 
  xix. 
  fig. 
  3), 
  For 
  remarks 
  

   on 
  the 
  variation 
  of 
  the 
  form 
  of 
  the 
  chelipedes 
  and 
  for 
  synonyma, 
  I 
  

   may 
  refer 
  to 
  M, 
  A. 
  Milne-Edwards 
  (Nouv. 
  Archiv. 
  ilus. 
  Hist. 
  Nat. 
  

   ix. 
  p. 
  281, 
  1873). 
  This 
  species 
  apparently 
  ranges 
  from 
  the 
  coasts 
  of 
  

   Egypt 
  southward 
  to 
  Natal, 
  and 
  eastward 
  to 
  the 
  islands 
  of 
  the 
  

   Pacific 
  (e. 
  g. 
  New 
  Caledonia, 
  Fijis). 
  

  

  The 
  specimen 
  from 
  Port 
  Molle 
  diff'ers 
  from 
  Savigny's 
  original 
  

   figure 
  of 
  this 
  species 
  * 
  in 
  its 
  much 
  less 
  distinctly 
  granulated 
  cara- 
  

   pace 
  ; 
  but 
  specimens 
  from 
  Mozambique, 
  received 
  in 
  the 
  final 
  con- 
  

   signment 
  of 
  H.M.8. 
  ' 
  Alert,' 
  have 
  the 
  carapace 
  as 
  strongly 
  granu- 
  

   lated 
  as 
  in 
  that 
  figure. 
  

  

  CAMPTOPLAX, 
  gen. 
  nov. 
  

  

  Carapace 
  trapezoidal, 
  anteriorly 
  deflexed, 
  with 
  the 
  antero-lateral 
  

   much 
  shorter 
  than 
  the 
  postero-lateral 
  margins, 
  which 
  are 
  straight 
  

   and 
  converge 
  slightly 
  to 
  the 
  posterior 
  margin. 
  Front 
  of 
  moderate 
  

   width. 
  Endostome 
  or 
  palate 
  without 
  longitudinal 
  ridges. 
  Post- 
  

   abdomen 
  (of 
  the 
  male) 
  covering 
  at 
  base 
  the 
  whole 
  width 
  of 
  the 
  

   sternum, 
  and 
  touching 
  the 
  bases 
  of 
  the 
  fifth 
  ambulatory 
  legs, 
  

   7-jointed. 
  Eyes 
  short, 
  with 
  thick 
  peduncles. 
  Antennules 
  trans- 
  

   versely 
  plicated. 
  Basal 
  antenual 
  joint 
  short, 
  not 
  reaching 
  to 
  the 
  

   subfrontal 
  process. 
  Outer 
  maxillipede 
  broad, 
  not 
  gaping, 
  with 
  the 
  

   merus-joint 
  transverse 
  and 
  much 
  shorter 
  than 
  the 
  ischium 
  ; 
  the 
  

   exognath 
  slender, 
  straight, 
  and 
  reaching 
  to 
  the 
  outer 
  distal 
  angle 
  of 
  

   the 
  merus. 
  Chelipedes 
  of 
  moderate 
  length. 
  Ambulatory 
  legs 
  with 
  

   the 
  margins 
  of 
  the 
  merus-joints 
  cristated. 
  The 
  male 
  verges 
  arising 
  

   directly 
  from 
  the 
  base 
  of 
  the 
  fifth 
  ambulatory 
  legs, 
  and 
  not 
  contained 
  

   in 
  sternal 
  channels. 
  

  

  This 
  genus 
  is 
  apparently 
  allied 
  to 
  Pilumnoplax 
  and 
  Heteroplax, 
  

   Stimpsont, 
  from 
  both 
  of 
  which 
  it 
  is 
  distinguished 
  by 
  the 
  absence 
  of 
  

   palatal 
  ridges 
  and 
  by 
  the 
  form 
  of 
  the 
  basal 
  antennal 
  joint 
  (Plate 
  

   XXIV. 
  fig. 
  a), 
  and 
  also 
  by 
  the 
  position 
  of 
  the 
  male 
  verges. 
  In 
  the 
  

   latter 
  character 
  it 
  would 
  seem 
  to 
  be 
  allied 
  to 
  the 
  West-Indian 
  genus 
  

   Frevillea, 
  A. 
  M.-Edwards;J:, 
  which, 
  however, 
  diff'ers 
  apparently 
  in 
  

   the 
  larger 
  orbits 
  and 
  longer 
  eye-peduncles, 
  &c. 
  

  

  84. 
  Camptoplax 
  coppingeri. 
  (Plate 
  XXIV. 
  fig. 
  A.) 
  

  

  The 
  carapace 
  is 
  subtrapezoidal. 
  little 
  broader 
  than 
  long, 
  the 
  

   anterior 
  portion 
  abruptly 
  deflexed, 
  and 
  with 
  three 
  broad 
  and 
  shallow 
  

   transverse 
  depressions, 
  whereof 
  the 
  anterior 
  is 
  situated 
  on 
  the 
  deflexed 
  

   postfrontal 
  region, 
  one 
  in 
  the 
  middle 
  line 
  of 
  the 
  carapace, 
  and 
  one 
  

   near 
  to 
  the 
  posterior 
  margin 
  ; 
  the 
  surface 
  of 
  the 
  carapace 
  is 
  covered 
  

   with 
  a 
  very 
  close 
  velvety 
  overgrowth, 
  amid 
  which 
  are 
  numerous 
  

  

  * 
  Vide 
  Savigny, 
  Orustaces 
  de 
  I'Egjpte, 
  pi. 
  ii. 
  fig. 
  1. 
  

   t 
  Proc. 
  Acad. 
  Nat. 
  Sm. 
  Philad. 
  pp. 
  93, 
  94 
  (1858). 
  

   I 
  Bull. 
  Mus. 
  Comp. 
  Zool. 
  viii. 
  p. 
  15 
  (1S80). 
  

  

  