﻿CRUSTACEA. 
  253 
  

  

  known. 
  In 
  the 
  smallest 
  (immature) 
  female 
  the 
  postabdomen 
  is 
  

   relatively 
  narrow, 
  and 
  does 
  not, 
  as 
  in 
  the 
  adult, 
  cover 
  the 
  whole 
  of 
  

   the 
  sternal 
  surface. 
  

  

  Nursia 
  abbreviata, 
  Bell, 
  must 
  be 
  added 
  to 
  the 
  list 
  of 
  the 
  Australian 
  

   species 
  of 
  this 
  family, 
  since 
  the 
  specimens 
  in 
  the 
  British-Museum 
  

   collection 
  are 
  from 
  Moreton 
  Bay, 
  and 
  were 
  purchased 
  with 
  the 
  types 
  

   of 
  N, 
  sinuata 
  from 
  the 
  same 
  locality. 
  

  

  105. 
  Nursilia 
  dentata, 
  Bell. 
  

  

  In 
  the 
  first 
  collection 
  is 
  a 
  female 
  from 
  Flinders, 
  Clairmont, 
  N.E. 
  

   Australia, 
  11 
  fms. 
  (No. 
  108), 
  and 
  in 
  the 
  second 
  an 
  adult 
  female 
  and 
  

   two 
  smaller 
  males 
  from 
  the 
  Arafura 
  Sea, 
  32-36 
  fms. 
  (No. 
  160). 
  

   These 
  do 
  not 
  differ 
  from 
  the 
  type 
  (a 
  female, 
  without 
  special 
  indica- 
  

   tion 
  of 
  locality, 
  from 
  the 
  ' 
  Samarang 
  ' 
  collection) 
  in 
  the 
  British 
  

   Museum, 
  except 
  in 
  the 
  somewhat 
  more 
  prominent 
  spines 
  and 
  mar- 
  

   ginal 
  teeth 
  of 
  the 
  carapace. 
  

  

  Mr. 
  Haswell 
  mentions 
  the 
  occurrence 
  of 
  this 
  species 
  at 
  the 
  Fitzroy 
  

   Islands. 
  

  

  There 
  is 
  in 
  the 
  collection 
  of 
  the 
  British 
  Museum 
  a 
  female 
  from 
  

   the 
  Fiji 
  Islands, 
  Matuka 
  {H.M.8. 
  '■Herald'), 
  in 
  which 
  the 
  small 
  

   spines 
  or 
  tubercles 
  of 
  the 
  gastric, 
  hepatic, 
  and 
  branchial 
  regions 
  are 
  

   nearly 
  obliterated, 
  as 
  are 
  also 
  the 
  lobes 
  or 
  teeth 
  of 
  the 
  lateral 
  

   margins. 
  

  

  In 
  the 
  final 
  consignment 
  of 
  the 
  collections 
  of 
  H.M.S. 
  'Alert' 
  is 
  a 
  

   specimen 
  from 
  the 
  Seychelles. 
  Hence 
  this 
  species 
  is 
  evidently 
  dis- 
  

   tributed 
  throughout 
  the 
  Oriental 
  region. 
  

  

  106. 
  IpMculus 
  spongiosus, 
  Adams 
  Sf 
  WJiiie. 
  

  

  A 
  small 
  male 
  was 
  dredged 
  in 
  the 
  Arafura 
  Sea, 
  32-36 
  fms. 
  

   (No. 
  160), 
  which 
  agrees 
  with 
  the 
  larger 
  specimens 
  from 
  the 
  Philip- 
  

   pine 
  Islands, 
  Corregidor 
  (Ciiminr/), 
  and 
  another 
  specimen 
  without 
  

   definite 
  locality, 
  from 
  the 
  ' 
  Samarang 
  ' 
  collection, 
  in 
  the 
  British 
  

   Museum. 
  

  

  Prof. 
  Bell 
  is 
  certainly 
  right 
  in 
  classing 
  this 
  genus 
  with 
  the 
  

   LeucosiidsD, 
  and 
  in 
  stating 
  that 
  it 
  has 
  no 
  near 
  afiinities 
  with 
  the 
  

   Parthenopidae, 
  as 
  supposed 
  by 
  Adams 
  and 
  White. 
  

  

  107. 
  Arcania 
  pulcherrima, 
  Haswell. 
  

  

  Arcania 
  septemspinosa, 
  Bell, 
  Tram. 
  Linn. 
  Soc. 
  xxi. 
  p. 
  310, 
  pi. 
  xxxiv. 
  

  

  fig. 
  7 
  (1855) 
  ; 
  Cat. 
  Leucos. 
  Brit. 
  Mus. 
  p. 
  21 
  (1855). 
  ^ 
  

   Arcauia 
  pulcherrima, 
  Haswell, 
  Pruc. 
  Linn. 
  Soc. 
  N. 
  S. 
  Wales, 
  iv. 
  p. 
  58, 
  

  

  pi. 
  yi. 
  tig. 
  4 
  (1880) 
  ; 
  Cat. 
  Austr. 
  Crust, 
  p. 
  131 
  (1882). 
  

  

  An 
  adult 
  female 
  from 
  Prince 
  of 
  Wales 
  Channel, 
  9 
  fms. 
  (No. 
  157), 
  

   and 
  a 
  smaller 
  male 
  from 
  the 
  Arafura 
  Sea, 
  32-36 
  fms. 
  (No. 
  160), 
  are 
  

   referred 
  here. 
  

  

  A 
  comparison 
  of 
  Mr. 
  Haswell's 
  description 
  and 
  figure 
  oi 
  A.pul- 
  

  

  