﻿8 
  Mr. 
  R. 
  I. 
  Pocock 
  on 
  the 
  

  

  Carpus 
  rounded 
  above 
  and 
  behind, 
  furnished 
  anteriorly 
  

   (inwardly) 
  with 
  one 
  strong 
  tooth, 
  behind 
  which 
  are 
  three 
  or 
  

   four 
  much 
  smaller 
  teeth. 
  

  

  Small 
  hand 
  with 
  straight 
  superior 
  and 
  inferior 
  surfaces 
  

   and 
  gently 
  convex 
  anterior 
  (inner) 
  and 
  posterior 
  (outer) 
  

   surfaces; 
  ringers 
  curved 
  gently 
  forwards 
  (inwards) 
  distally, 
  

   but 
  otherwise 
  tolerably 
  straight 
  5 
  almost 
  in 
  contact 
  when 
  

   closed. 
  

  

  The 
  larger 
  hand 
  is 
  relatively 
  thicker 
  from 
  above 
  down- 
  

   wards, 
  the 
  inferior 
  surface 
  is 
  slightly 
  convex 
  distally, 
  and 
  

   the 
  dactylus 
  convex 
  from 
  base 
  to 
  point. 
  In 
  the 
  adult 
  male 
  

   the 
  difference 
  between 
  the 
  two 
  hands 
  is 
  more 
  pronounced 
  than 
  

   in 
  the 
  female 
  and 
  the 
  space 
  between 
  the 
  fingers 
  much 
  larger. 
  

  

  Legs 
  long 
  and 
  slender, 
  feebly 
  dentate 
  or 
  spinous 
  above, 
  

   propodus 
  sparsely 
  spinous 
  below 
  ; 
  dactylus 
  slender, 
  arched, 
  

   furnished 
  with 
  five 
  rows 
  of 
  spines 
  which 
  distally 
  increase 
  in 
  

   size, 
  as 
  long 
  as 
  the 
  propodus 
  and 
  half 
  the 
  carpus 
  ; 
  propodus 
  

   with 
  a 
  row 
  of 
  distal 
  marginal 
  spines. 
  

  

  Abdomen 
  in 
  the 
  female 
  covering 
  the 
  entire 
  sternum 
  as 
  far 
  

   as 
  the 
  space 
  between 
  the 
  chelipedes, 
  and 
  touching 
  the 
  coxa3 
  of 
  

   the 
  legs 
  on 
  each 
  side 
  ; 
  fringed 
  with 
  hairs 
  on 
  each 
  side. 
  The 
  

   appendages 
  decrease 
  in 
  length 
  from 
  before 
  backwards, 
  and 
  are 
  

   long 
  and 
  feather-like, 
  being 
  fringed 
  with 
  hairs. 
  The 
  endo- 
  

   podites 
  of 
  all 
  are 
  alike, 
  being 
  slender 
  proximally 
  for 
  two 
  

   thirds 
  of 
  their 
  length, 
  foliaceous 
  and 
  ovate 
  for 
  the 
  distal 
  

   third 
  ; 
  the 
  exopodite 
  of 
  the 
  first 
  resembles 
  the 
  endopodites, 
  

   but 
  those 
  of 
  the 
  second, 
  third, 
  and 
  fourth 
  gradually 
  alter 
  in 
  

   shape 
  from 
  before 
  backwards, 
  the 
  fourth 
  being 
  broad 
  and 
  

   laminate. 
  The 
  lateral 
  angular 
  portions 
  of 
  the 
  sternum 
  which 
  

   project 
  between 
  the 
  coxaj 
  are 
  fringed 
  with 
  hairs, 
  and 
  there 
  is 
  

   a 
  single 
  patch 
  of 
  hair 
  on 
  each 
  side 
  opposite 
  the 
  coxa 
  of 
  the 
  

   chelipede. 
  The 
  generative 
  apertures 
  are 
  almost 
  in 
  contact 
  in 
  

   the 
  middle 
  line. 
  Jn 
  the 
  male 
  the 
  sides 
  of 
  the 
  sternum 
  and 
  of 
  

   the 
  abdomen 
  are 
  furnished 
  with 
  very 
  short 
  hairs, 
  and 
  there 
  is 
  

   no 
  anterior 
  patch 
  of 
  hair 
  on 
  each 
  side 
  ; 
  but 
  the 
  triangular 
  

   hollow 
  which 
  contains 
  the 
  abdominal 
  appendages 
  when 
  the 
  

   abdomen 
  is 
  closed 
  over 
  it 
  is 
  covered 
  with 
  longish 
  hairs. 
  The 
  

   abdominal 
  appendages, 
  though 
  apparently 
  more 
  complex, 
  

   closely 
  resemble 
  those 
  of 
  P. 
  dentata 
  as 
  figured 
  by 
  Brocchi 
  

   (Ann. 
  Sci. 
  JS 
  ] 
  at. 
  (6) 
  ii. 
  p. 
  86, 
  pi. 
  xvii. 
  figs. 
  119-121), 
  con- 
  

   sisting 
  of 
  a 
  posterior, 
  slender, 
  styliform 
  process, 
  and 
  an 
  ante- 
  

   rior 
  stouter 
  process 
  which 
  is 
  completely 
  twisted 
  at 
  its 
  distal 
  

   end. 
  

  

  In 
  both 
  sexes 
  the 
  pterygostomial 
  region 
  is 
  covered 
  thickly 
  

   a\ 
  ith 
  short 
  hairs. 
  

  

  