﻿550 
  COLLECTIONS 
  FROM 
  THE 
  WESTER5 
  INDIAN 
  0CE4N, 
  

  

  The 
  single 
  example 
  was 
  collected 
  at 
  Proyidence 
  Island, 
  24 
  fms. 
  

   (No. 
  215). 
  

  

  It 
  only 
  differs 
  from 
  Eiippell's 
  figure 
  {t.c. 
  p. 
  17, 
  pi. 
  iv. 
  fig. 
  3) 
  in 
  

   the 
  somewhat 
  broader 
  carapace 
  and 
  shorter 
  granulated 
  chelipedes, 
  

   and 
  I 
  do 
  not 
  venture, 
  therefore, 
  to 
  separate 
  it 
  as 
  a 
  distinct 
  species. 
  

  

  Ehalia 
  granulata 
  has 
  been 
  hitherto 
  a 
  desideratum 
  in 
  the 
  Museum 
  

   collection. 
  Originally 
  described 
  by 
  Iliippell 
  as 
  Nursia 
  granulata*, 
  

   it 
  was 
  retained 
  as 
  a 
  doubtful 
  member 
  of 
  that 
  genus 
  by 
  Milne- 
  

   Edwardst, 
  who 
  had 
  seen 
  no 
  specimens. 
  Prof. 
  T. 
  Bell, 
  in 
  his 
  mono- 
  

   graph 
  of 
  the 
  family 
  J, 
  makes 
  no 
  mention 
  of 
  the 
  species; 
  but 
  it 
  is 
  

   included 
  by 
  Von 
  Martens 
  in 
  his 
  conspectus 
  of 
  the 
  East- 
  African 
  Cru&- 
  

   tacea§, 
  who 
  refers 
  to 
  it 
  as 
  Ehalia 
  (jrairuJata. 
  

  

  The 
  nearest 
  ally 
  to 
  this 
  species 
  with 
  which 
  I 
  am 
  acquainted 
  is 
  

   Ebalia 
  miliaris, 
  A. 
  M.-Edwards||, 
  a 
  species 
  from 
  Upolu, 
  Samoa 
  

   Islands, 
  which 
  is 
  only 
  very 
  briefly 
  characterized, 
  but 
  which 
  differs 
  

   in 
  the 
  shorter 
  dactyli 
  of 
  the 
  chelipedes 
  and 
  the 
  much 
  more 
  robust 
  

   ambulatory 
  legs. 
  Elxdia 
  orientalis, 
  Kossmann^, 
  from 
  the 
  Red 
  Sea, 
  

   differs 
  altogether 
  in 
  the 
  form 
  of 
  the 
  carapace, 
  which 
  is 
  subrhomboidal, 
  

   with 
  deep 
  concavities 
  behind 
  the 
  antero-lateral 
  margins. 
  

  

  72. 
  Calappa 
  hepatica 
  (Linn.). 
  

  

  Mozambique, 
  beach 
  (jN^o. 
  224) 
  ; 
  an 
  adult 
  male. 
  

   This 
  very 
  common 
  species 
  has 
  been 
  referred 
  to 
  in 
  the 
  preceding 
  

   part 
  of 
  this 
  Report 
  (p. 
  257). 
  

  

  73. 
  Calappa 
  gallus 
  (Merbst), 
  var. 
  hicornis. 
  

  

  This 
  variety 
  is 
  so 
  nearly 
  allied 
  to 
  the 
  typical 
  Calappa 
  gallus 
  

   (Herbst), 
  with 
  which 
  I 
  believe 
  the 
  "W. 
  -Indian 
  C. 
  galloides, 
  Stimpson, 
  

   to 
  be 
  identical, 
  that 
  it 
  will 
  suffice 
  here 
  to 
  point 
  out 
  the 
  characters 
  

   by 
  which 
  the 
  specimens 
  in 
  the 
  Museum 
  collection 
  may 
  always 
  be 
  

   distinguished. 
  The 
  rostrum 
  is 
  not, 
  as 
  in 
  the 
  ordinary 
  condition 
  of 
  

   C. 
  gallus, 
  entire 
  and 
  obtuse 
  or 
  very 
  slightly 
  excavate 
  at 
  its 
  distal 
  

   end, 
  but 
  is 
  deeply 
  emarginate, 
  so 
  as 
  to 
  consist 
  of 
  two 
  distinct 
  lobes 
  

   or 
  spines, 
  on 
  the 
  outer 
  side 
  of 
  each 
  of 
  which 
  there 
  is 
  a 
  smaller 
  

   tooth, 
  which 
  tooth 
  is, 
  however, 
  sometimes 
  distinguishable 
  in 
  the 
  

   typical 
  C. 
  gallus 
  ; 
  the 
  upper 
  margins 
  of 
  the 
  orbits 
  are 
  denticulated, 
  

   not 
  smooth 
  as 
  in 
  the 
  typical 
  form, 
  the 
  tubercles 
  of 
  the 
  carapace 
  are 
  

   usually 
  more 
  conical 
  and 
  acute. 
  It 
  may 
  not 
  improbably 
  prove 
  to 
  

   be 
  a 
  distinct 
  species. 
  

  

  * 
  Beschreib. 
  24 
  kurzschw. 
  Krabben 
  des 
  rotben 
  Meeres, 
  p. 
  17, 
  pi. 
  iv. 
  fig. 
  3 
  

   (1830). 
  

  

  t 
  Hist. 
  Nat. 
  des 
  Crust, 
  ii. 
  p. 
  138 
  (1837). 
  

  

  J 
  Ti-ans. 
  Linn. 
  Soc. 
  xxi. 
  pp. 
  277-313 
  (1855). 
  

  

  § 
  In 
  Von 
  der 
  Deeken's 
  Reisen 
  in 
  Ost-Afrika, 
  iii. 
  (1) 
  p. 
  110 
  (1869). 
  

  

  II 
  Journ. 
  Mus. 
  Godeffroy, 
  iv. 
  p. 
  85, 
  pi. 
  xiii. 
  fig. 
  2 
  (1873). 
  

  

  ^ 
  Malacostraca, 
  in 
  Zoolog. 
  Ergebn. 
  rotb. 
  Meeves, 
  i. 
  p. 
  Go, 
  pi. 
  i. 
  fit;. 
  6, 
  pi. 
  iii. 
  

   fig. 
  16 
  (1877). 
  

  

  