﻿CKTJSTACEA. 
  261 
  

  

  PARATYMOLUS, 
  Miers. 
  

  

  The 
  affinity 
  of 
  Paratymolus, 
  and 
  partictQarly 
  of 
  the 
  later 
  described 
  

   species 
  P. 
  latipes, 
  Haswell, 
  and 
  P. 
  sexspinosus, 
  Miers, 
  with 
  Telmessus 
  

   is 
  pointed 
  out 
  by 
  Mr. 
  Haswell, 
  and 
  is 
  undeniable, 
  notwithstanding 
  

   the 
  very 
  differently 
  shaped 
  carapace 
  of 
  Telmessus, 
  and 
  the 
  fact 
  that 
  

   in 
  that 
  genus 
  the 
  basal 
  antenna! 
  joint 
  has 
  its 
  outer 
  margin 
  produced 
  

   into 
  a 
  broad 
  triangulate 
  lobe 
  which 
  enters 
  the 
  inner 
  orbital 
  hiatus. 
  

   The 
  affinities 
  of 
  Pamtymolas 
  with 
  Homola 
  are 
  also 
  very 
  evident, 
  

   and 
  I 
  have 
  already 
  referred 
  to 
  them. 
  In 
  P. 
  pubesccns 
  and 
  P. 
  hitu- 
  

   berculatus 
  the 
  distal 
  margin 
  of 
  the 
  merus-joint 
  of 
  the 
  outer 
  maxilli- 
  

   pedes 
  is 
  somewhat 
  rounded 
  as 
  in 
  certain 
  Inachidse, 
  to 
  which 
  family 
  

   this 
  genus 
  further 
  approximates 
  in 
  its 
  slender 
  basal 
  antennal 
  joint. 
  

   Whether 
  the 
  genus 
  Pcwatymohis 
  be 
  associated 
  with 
  Telmessus 
  or 
  not, 
  

   its 
  affinities 
  are, 
  I 
  think, 
  with 
  the 
  Maioid 
  Anomura, 
  to 
  which 
  also 
  

   Homola 
  belongs, 
  rather 
  than 
  with 
  the 
  Corystidte. 
  I 
  retain 
  this 
  

   genus 
  therefore 
  for 
  the 
  present 
  near 
  the 
  Dromiidse, 
  where 
  also 
  

   Haswell 
  keeps 
  it. 
  

  

  3. 
  Paratymolus 
  bituberculatus, 
  Haswell, 
  var. 
  gracilis. 
  

  

  A 
  male 
  is 
  in 
  the 
  collection, 
  from 
  Prince 
  of 
  Wales 
  Channel, 
  

   7-9 
  fms., 
  which 
  is 
  thus 
  designated 
  with 
  some 
  hesitation. 
  The 
  prin- 
  

   cipal 
  character 
  distinguishing 
  P. 
  hituhcrculatus 
  from 
  P. 
  puhescens 
  is 
  

   to 
  be 
  found 
  in 
  the 
  subtriangulate 
  chela, 
  the 
  upper 
  distal 
  end 
  of 
  

   which 
  is 
  produced 
  into 
  a 
  more 
  or 
  less 
  prominent 
  tooth 
  ; 
  the 
  teeth 
  on 
  

   the 
  posterior 
  margins 
  of 
  the 
  merus 
  and 
  palm, 
  which 
  are 
  very 
  

   distinctly 
  indicated 
  in 
  Mr. 
  Haswell's 
  figure, 
  exist 
  in 
  Dr. 
  Coppinger 
  s 
  

   specimen 
  only 
  as 
  small 
  tuberculiform 
  setigerous 
  prominences 
  ; 
  and, 
  

   moreover, 
  the 
  spine 
  in 
  front 
  of 
  the 
  principal 
  hepatic 
  spine, 
  which 
  

   exists 
  in 
  the 
  type 
  specimens 
  of 
  P. 
  puhescens 
  and 
  of 
  P. 
  bituberculatus, 
  

   is 
  wanting 
  in 
  the 
  example 
  from 
  Prince 
  of 
  Wales 
  Channel, 
  which 
  

   should 
  not 
  improbably 
  be 
  separated 
  as 
  a 
  distinct 
  species. 
  

  

  A 
  mutilated 
  female, 
  in 
  which 
  both 
  chelipedes 
  are 
  deficient, 
  from 
  

   Thursday 
  Island, 
  3-4 
  fms. 
  (No. 
  177), 
  greatly 
  resembles 
  the 
  type 
  of 
  

   P. 
  puhescens, 
  Miers 
  *, 
  from 
  Matoya, 
  in 
  the 
  form 
  of 
  the 
  carapace 
  and 
  

   number 
  and 
  disposition 
  of 
  its 
  spines 
  and 
  tubercles, 
  differing 
  only 
  in 
  

   the 
  somewhat 
  less 
  prominent 
  rostrum, 
  and 
  may 
  perhaps 
  belong 
  to 
  

   that 
  species. 
  

  

  4. 
  Paratymolus 
  sexspinosus. 
  (Plate 
  XXVII. 
  fig. 
  B.) 
  

  

  This 
  form 
  is 
  a 
  near 
  ally 
  of 
  the 
  Paratymolus 
  latipes 
  described 
  by 
  

   Mr. 
  Haswell, 
  but 
  differs 
  in 
  the 
  following 
  particulars 
  : 
  — 
  The 
  lobes 
  of 
  

   the 
  rostrum 
  are 
  blunter, 
  and 
  the 
  median 
  notch 
  much 
  smaller 
  ; 
  the 
  

   antero-lateral 
  margins 
  of 
  the 
  carapace 
  are 
  armed 
  with 
  only 
  three 
  

   synnes 
  or 
  teeth, 
  including 
  the 
  praiocular 
  spine, 
  the 
  postocular 
  being 
  

   deficient 
  ; 
  the 
  chelipedes 
  and 
  ambulatory 
  legs 
  in 
  tho 
  specimens 
  

   examined 
  (which, 
  however, 
  are 
  females) 
  are 
  slenderer; 
  tho 
  merus- 
  

  

  * 
  Proc. 
  Zool. 
  Soc. 
  p. 
  45, 
  pi. 
  ii. 
  fig. 
  G 
  (1879). 
  

  

  