﻿CRUSTACEA. 
  551 
  

  

  A 
  single 
  female, 
  in 
  whicli 
  the 
  chelipedes 
  are 
  deficient, 
  was 
  obtained 
  

   at 
  Providence 
  Island, 
  19 
  fms. 
  (No. 
  217). 
  

  

  A 
  specimen 
  also 
  of 
  this 
  variety 
  is 
  in 
  the 
  British-Museum 
  collec- 
  

   tion 
  from 
  the 
  Indian 
  Ocean, 
  and 
  others 
  from 
  the 
  collection 
  of 
  

   H.M.S. 
  ' 
  Samarang 
  ' 
  without 
  special 
  locality. 
  Of 
  the 
  typical 
  C. 
  r/aUus, 
  

   there 
  are 
  specimens 
  in 
  the 
  collection 
  from 
  the 
  Mauritius 
  ; 
  Ceylon 
  

   (E. 
  W. 
  II. 
  HoJdswortli), 
  and 
  others 
  without 
  special 
  locality 
  ; 
  also 
  

   specimens 
  from 
  the 
  ^yest 
  Indies 
  ; 
  and 
  Garden 
  Key, 
  Tortugas 
  

   (SmifJisonian 
  Institution, 
  designated 
  C. 
  gaUoides). 
  Specimens 
  from 
  

   the 
  Philippines 
  ( 
  Ciuninr/) 
  and 
  Eastern 
  Seas 
  {II.3I.S. 
  ' 
  Samarang 
  '), 
  

   which 
  possibly 
  belong 
  to 
  this 
  species, 
  have 
  the 
  tubercles 
  of 
  the 
  

   carapace 
  larger, 
  smoother, 
  and 
  more 
  rounded 
  than 
  in 
  the 
  typical 
  

   C. 
  galJus. 
  

  

  A. 
  Milne-Edwards 
  has 
  recently 
  described 
  a 
  species, 
  C. 
  angusta*, 
  

   from 
  the 
  West 
  Indies, 
  which 
  is 
  too 
  briefly 
  characterized 
  to 
  be 
  iden- 
  

   fied 
  with 
  certainty, 
  but 
  with 
  which 
  C. 
  gallus 
  var. 
  Licornis 
  may 
  

   possibly 
  be 
  identical. 
  The 
  lateral 
  margins 
  of 
  the 
  carapace 
  are, 
  

   however, 
  described 
  as 
  finely 
  granulated, 
  whereas 
  in 
  var. 
  bicornis 
  

   they 
  are 
  distinctly 
  deutated, 
  as 
  usual 
  in 
  the 
  genus 
  CaJappa. 
  

  

  74. 
  Cymopolia 
  whitei. 
  (Plate 
  XLIX. 
  fig. 
  C.) 
  

  

  The 
  carapace 
  is 
  shaped 
  nearly 
  as 
  in 
  C. 
  jalcesii. 
  White, 
  which 
  this 
  

   species 
  much 
  resembles 
  ; 
  it 
  is 
  subquadrate, 
  transverse, 
  with 
  the 
  

   posterior 
  margin 
  slightly 
  rounded 
  ; 
  the 
  cervical 
  and 
  other 
  sulci 
  of 
  

   the 
  carapace 
  are 
  distinct 
  and 
  smooth, 
  the 
  dorsal 
  surface 
  between 
  

   them 
  is 
  everywhere 
  granulated, 
  but 
  is 
  without 
  spines. 
  The 
  front 
  

   is 
  moderately 
  prominent, 
  and 
  is 
  divided 
  by 
  a 
  median 
  fissure 
  into 
  

   two 
  median 
  lobes 
  ; 
  outside 
  of 
  which 
  the 
  frontal 
  margin 
  is 
  sinuated, 
  

   but 
  not 
  distinctly 
  lobate 
  ; 
  the 
  upper 
  orbital 
  margin 
  is 
  divided 
  by 
  two 
  

   deep 
  fissures, 
  the 
  median 
  lobe 
  truncated, 
  the 
  outer 
  orbital 
  angle 
  promi- 
  

   nent 
  and 
  acute 
  ; 
  behind 
  it 
  on 
  the 
  lateral 
  margin 
  of 
  the 
  carapace 
  are 
  two 
  

   smaller 
  teeth. 
  The 
  fourth 
  to 
  sixth 
  segments 
  of 
  the 
  postabdomen 
  are 
  

   partially 
  coalescent 
  ; 
  its 
  sides 
  are 
  subparallel 
  to 
  about 
  the 
  middle 
  of 
  the 
  

   penultimate 
  segment, 
  whence 
  they 
  converge 
  rapidly 
  to 
  the 
  distal 
  end 
  

   of 
  the 
  terminal 
  segment, 
  which 
  lies 
  just 
  between 
  the 
  bases 
  of 
  the 
  

   outer 
  maxillipedes, 
  as 
  in 
  C. 
  dentaia, 
  A. 
  M.-Edwards. 
  The 
  cristi- 
  

   form 
  lobe 
  on 
  the 
  anterior 
  margin 
  of 
  the 
  eye-peduncles 
  has 
  its 
  

   anterior 
  margin 
  regularly 
  arcuated. 
  The 
  inner 
  suborbital 
  lobe 
  is 
  

   subacute 
  and 
  but 
  little 
  prominent 
  ; 
  there 
  is 
  a 
  jjromincnt 
  subquadrate 
  

   lobe 
  on 
  the 
  outer 
  side 
  of 
  the 
  peduncles 
  of 
  the 
  anteniia3, 
  whose 
  

   flagella 
  are 
  about 
  14-jointed. 
  The 
  merus-joint 
  of 
  the 
  outer 
  max- 
  

   illipedes 
  has 
  an 
  incurved 
  tooth 
  or 
  lobe 
  at 
  its 
  extero-distal 
  angle 
  

   as 
  in 
  C. 
  julcesii. 
  The 
  chelipedes 
  (in 
  the 
  small 
  males 
  I 
  have 
  ex- 
  

   amined) 
  are 
  rather 
  small, 
  slender, 
  and 
  of 
  nearly 
  equal 
  size 
  ; 
  morns 
  

   and 
  carpus 
  unarmed 
  ; 
  palm 
  about 
  twice 
  as 
  long 
  as 
  the 
  wrist, 
  

   and 
  smooth 
  or 
  very 
  obscurely 
  granulated 
  ; 
  fingers 
  about 
  half 
  as 
  

   long 
  as 
  palm, 
  acute, 
  and 
  somewhat 
  deflexed, 
  with 
  their 
  inner 
  edges 
  

  

  * 
  Bull. 
  Mu«. 
  Coinp. 
  Zool. 
  \ii. 
  p. 
  1^ 
  (1S80). 
  

  

  