﻿CRUSTACEA. 
  231 
  

  

  tralia 
  (il/. 
  du 
  Boulaii). 
  It 
  is 
  retained 
  as 
  a 
  distiuct 
  species 
  by 
  Koss- 
  

   mann, 
  who 
  unites, 
  however, 
  under 
  the 
  designation 
  Th. 
  prymna, 
  

   several 
  of 
  the 
  species 
  regarded 
  as 
  distinct 
  by 
  A. 
  M. 
  -Edwards 
  {vide 
  

   'Zool. 
  Rcis. 
  roth. 
  Meer. 
  ' 
  i. 
  p. 
  17, 
  1877). 
  

  

  70. 
  Thalamita 
  sima, 
  M.-Edw. 
  

  

  Small 
  specimens 
  are 
  in 
  the 
  first 
  collection 
  from 
  Port 
  !Molle, 
  ob- 
  

   tained 
  between 
  tide-marks 
  (No. 
  103) 
  and 
  at 
  14 
  fms. 
  (No. 
  93) 
  ; 
  and 
  

   in 
  the 
  second 
  collection, 
  from 
  Thursday 
  Island, 
  3-4 
  fms. 
  (Nos. 
  175, 
  

   177), 
  4-5 
  fms. 
  (No. 
  165), 
  and 
  Port 
  Darwin, 
  obtained 
  on 
  the 
  beach 
  

   (No. 
  176). 
  

  

  In 
  three 
  very 
  small 
  specimens 
  from 
  Port 
  Denison, 
  Queensland, 
  

   4 
  fms. 
  (No. 
  Ill), 
  two 
  of 
  which 
  are 
  females 
  with 
  ova, 
  the 
  median 
  

   lobes 
  of 
  the 
  front 
  are 
  sinuated, 
  and 
  the 
  front 
  thus 
  appears 
  very 
  ob- 
  

   scurely 
  6-lobed. 
  This 
  is 
  probably 
  a 
  peculiarity 
  due 
  to 
  the 
  small 
  size 
  

   of 
  the 
  specimens 
  examined 
  ; 
  the 
  breadth 
  of 
  the 
  carapace 
  of 
  one 
  of 
  

   the 
  females 
  is 
  barely 
  4 
  lines 
  (8| 
  millim.). 
  

  

  Of 
  this 
  species 
  there 
  are 
  specimens 
  in 
  the 
  British-Museum 
  collec- 
  

   tion 
  obtained 
  between 
  Cumberland 
  Island 
  and 
  Point 
  Slade 
  and 
  off 
  

   Cape 
  Capricorn 
  {J. 
  MacfjiUivray^ 
  H.M.S. 
  'Ilattlesnake') 
  ; 
  also 
  from 
  

   Moreton 
  liay 
  and 
  Port 
  Jackson, 
  and 
  from 
  Swan 
  River 
  (J^, 
  B. 
  Juices) 
  

   and 
  Shark 
  Bay, 
  W. 
  Australia 
  {B\ 
  M. 
  Rayner, 
  H.M.S. 
  'Herald'); 
  

   also 
  from 
  New 
  Zealand 
  (jmrcJiased), 
  and 
  from 
  the 
  Indian 
  Ocean 
  

   {General 
  Hardw'uTce), 
  and 
  Aku 
  Sima, 
  Japan 
  {Gapt. 
  H. 
  G. 
  St. 
  John) 
  ; 
  

   besides 
  others 
  without 
  special 
  indication 
  of 
  locality. 
  A. 
  Milne- 
  

   Edwards 
  records 
  it 
  from 
  New 
  Caledonia. 
  The 
  specimens 
  from 
  the 
  

   Indian 
  Ocean 
  have 
  the 
  chelipedes 
  more 
  distinctly 
  tuberculated 
  than 
  

   the 
  other 
  examples 
  in 
  the 
  collection, 
  but 
  cannot, 
  I 
  think, 
  on 
  this 
  

   account 
  be 
  separated, 
  even 
  as 
  a 
  distinct 
  variety. 
  Erom 
  the 
  Thcda- 
  

   mita 
  clicqdali, 
  noticed 
  below, 
  T. 
  sima 
  is 
  distinguished 
  not 
  only 
  by 
  the 
  

   much 
  more 
  acute 
  lateral 
  teeth 
  of 
  the 
  carapace, 
  the 
  last 
  of 
  which 
  is 
  

   rather 
  more 
  prominent 
  than 
  the 
  rest, 
  but 
  also 
  by 
  the 
  smoother 
  

   sternum 
  and 
  by 
  the 
  well-developed 
  spines 
  of 
  the 
  palms 
  of 
  the 
  

   chelipedes. 
  In 
  T. 
  chapAali 
  the 
  last 
  of 
  the 
  antero-lateral 
  teeth 
  is 
  (if 
  

   any 
  thing) 
  smaller 
  than 
  the 
  preceding 
  tooth, 
  and 
  the 
  palmar 
  spines 
  

   are 
  nearly 
  obsolete 
  *. 
  

  

  * 
  I 
  may 
  take 
  this 
  opportunity 
  of 
  noting 
  that 
  there 
  is 
  now 
  in 
  the 
  collection 
  of 
  

   the 
  British 
  Museum 
  a 
  s])eciinen 
  from 
  Ceylon 
  {E. 
  W. 
  II. 
  Holdav-ortli) 
  apparently 
  

   referable 
  to 
  this 
  exceedingly 
  rare 
  Jhalamita, 
  originally 
  described 
  froiri 
  the 
  Bed 
  

   Sea, 
  of 
  which 
  A. 
  Milne-Edwards, 
  when 
  he 
  published 
  his 
  Monograph 
  of 
  the 
  

   Portunidaj 
  (Arch. 
  Mas. 
  H. 
  N. 
  x. 
  p. 
  yiiO, 
  18()1), 
  wrote: 
  — 
  " 
  Cette 
  espece 
  parait 
  

   extremement 
  rare, 
  elle 
  n'existo 
  dans 
  aucun 
  Musee, 
  soit 
  de 
  France, 
  soit 
  de 
  

   Angleterre, 
  soit 
  de 
  Hollande." 
  

  

  This 
  example 
  is 
  an 
  adult 
  male, 
  and 
  agrees 
  very 
  well 
  with 
  M.-Edwards's 
  

   description 
  and 
  Savigny's 
  figure 
  of 
  T. 
  chapfaH, 
  except 
  as 
  regards 
  the 
  clielipedes, 
  

   the 
  arm 
  of 
  which 
  is 
  strigose, 
  and 
  the 
  wrist 
  and 
  palm 
  and 
  fingers 
  very 
  closely 
  

   and 
  distinctly 
  granulated; 
  the 
  sternum 
  is 
  also 
  finely 
  sculptured. 
  As 
  some 
  

   indications 
  of 
  granulations 
  appear 
  on 
  the 
  wrist 
  of 
  the 
  left-hand 
  chelipede 
  in 
  

   Savigny's 
  figure, 
  I 
  do 
  not 
  venture 
  to 
  regard 
  our 
  specimen 
  as 
  distinct. 
  Should 
  

   future 
  researches, 
  however, 
  demonstrate 
  it 
  to 
  be 
  so, 
  it 
  may 
  be 
  designated 
  

   7'. 
  Juildiwrn-ihi. 
  

  

  