﻿CRUSTACEA. 
  249 
  

  

  The 
  differences 
  in 
  the 
  form 
  of 
  the 
  frontal 
  lobes 
  between 
  the 
  two 
  

   species 
  are, 
  I 
  may 
  add, 
  well 
  shown 
  in 
  Targioni-Tozetti's 
  figures 
  

   (vide 
  ' 
  Crostacei 
  della 
  Magenta,' 
  pp. 
  173, 
  176, 
  pi. 
  x, 
  figs. 
  4 
  & 
  5, 
  

   1877). 
  

  

  AU 
  the 
  specimens 
  of 
  this 
  genus 
  from 
  the 
  Magellan 
  Straits, 
  Falk- 
  

   land, 
  Kerguelen, 
  and 
  Auckland 
  Islands, 
  and 
  New 
  Zealand 
  in 
  the 
  

   collection 
  of 
  the 
  Museum 
  belong 
  to 
  H. 
  planatus. 
  

  

  Of 
  //. 
  ovatus 
  there 
  are 
  specimens 
  in 
  the 
  collection 
  of 
  the 
  British 
  

   Museum 
  from 
  reefs 
  on 
  the 
  iS^.E. 
  coast 
  of 
  Australia 
  (Saiimarez) 
  and 
  

   Port 
  Jackson 
  ( 
  Cuming). 
  I 
  believe 
  a 
  very 
  small 
  specimen 
  from 
  King 
  

   George's 
  Sound, 
  S.W. 
  Australia 
  {F. 
  M. 
  liayner, 
  H.M.S. 
  ' 
  Herald 
  '), 
  

   also 
  belongs 
  here. 
  Mr. 
  Haswell 
  (Cat, 
  p. 
  114) 
  mentions 
  the 
  oc- 
  

   currence 
  of 
  Hcdicarcimis 
  planatus, 
  which 
  he 
  refers 
  to 
  the 
  genus 
  

   Bymenosoma, 
  at 
  Port 
  Western 
  ; 
  but 
  as 
  he 
  merely 
  quotes 
  the 
  

   description 
  and 
  synonyms 
  as 
  given 
  in 
  my 
  New-Zealand 
  Catalogue, 
  

   I 
  cannot 
  be 
  certain 
  whether 
  his 
  specimens 
  belong 
  to 
  H. 
  planatus 
  

   or 
  H. 
  ovatus. 
  

  

  95. 
  Leucosia 
  ocellata, 
  Bell. 
  

  

  A 
  female 
  example 
  was 
  obtained 
  in 
  the 
  Arafura 
  Sea 
  at 
  32-36 
  fms. 
  

   (No. 
  160). 
  

  

  There 
  are 
  besides 
  in 
  the 
  Museum 
  collection 
  only 
  the 
  specimen 
  re- 
  

   ferred 
  to 
  by 
  Bell 
  as 
  from 
  "■ 
  Eastern 
  Australia." 
  which 
  was 
  obtained 
  

   at 
  Cape 
  Capricorn, 
  on 
  the 
  Queensland 
  coast 
  (J. 
  MacAiillivray 
  , 
  H.M.S. 
  

   ' 
  Eattlesnake 
  '), 
  and 
  one 
  without 
  special 
  locality 
  collected 
  by 
  F. 
  M. 
  

   Eayner 
  (H.M.S. 
  ' 
  Herald'). 
  

  

  Mr. 
  Haswell 
  records 
  this 
  species 
  from 
  Keppel 
  Bay, 
  Queensland. 
  

  

  96. 
  Leucosia 
  whitei. 
  

  

  Leucosia 
  whitei, 
  Bell, 
  Trans. 
  Linn. 
  Soc. 
  xxi. 
  p. 
  289, 
  pi. 
  xxxi. 
  fig. 
  2 
  

  

  (1855) 
  ; 
  Cat. 
  Leucosiidce 
  Brit. 
  Mus. 
  p. 
  9 
  (1855) 
  ; 
  HasiueU, 
  Froc. 
  

  

  Linn. 
  Soc. 
  N. 
  S. 
  Wales, 
  p. 
  45 
  (1880); 
  Cat. 
  Austr. 
  Crtist. 
  p. 
  118 
  

  

  (1882). 
  

   ? 
  Leucosia 
  cheverti, 
  Hastoell, 
  t. 
  c. 
  p. 
  47, 
  pi. 
  v. 
  fig. 
  2 
  (1880) 
  ; 
  Cata- 
  

  

  locjue, 
  p. 
  120 
  (1882), 
  var. 
  

  

  A 
  specimen 
  from 
  Flinders, 
  Clairmont, 
  N.E. 
  Australia, 
  dredged 
  in 
  

   11 
  fms. 
  (No. 
  108), 
  in 
  the 
  first 
  collection, 
  belongs 
  here, 
  and 
  one 
  from 
  

   Prince 
  of 
  Wales 
  Channel, 
  9 
  fms. 
  (No. 
  157,), 
  second 
  collection. 
  Mr. 
  

   Haswell 
  records 
  it 
  from 
  Princess 
  Charlotte 
  Bay, 
  Cape 
  Grenville, 
  and 
  

   Brook 
  Island. 
  

  

  I 
  think 
  that 
  L. 
  cheverti, 
  Haswell, 
  can 
  scarcely 
  be 
  regarded 
  as 
  

   more 
  than 
  a 
  variety 
  of 
  L. 
  ivhitei 
  ; 
  it 
  is 
  distinguished, 
  according 
  to 
  

   its 
  author, 
  by 
  the 
  form 
  of 
  the 
  front, 
  which 
  is 
  obscurely 
  (not 
  dis- 
  

   tinctly) 
  tridentate, 
  and 
  by 
  the 
  absence 
  of 
  granules 
  on 
  the 
  hepatic 
  

   regions. 
  The 
  hepatic 
  granules, 
  however, 
  vary 
  in 
  number 
  in 
  the 
  

   specimens 
  (four 
  in 
  number) 
  in 
  the 
  Museum 
  collection, 
  and 
  in 
  one 
  

   are 
  very 
  obscurely 
  marked. 
  In 
  two 
  specimens 
  from 
  Shark 
  Bay, 
  

   W. 
  Australia 
  (F. 
  M. 
  Rayner, 
  H.M.S. 
  ' 
  Herald 
  '), 
  which 
  I 
  think 
  

  

  