﻿CRT7STACEA. 
  247 
  

  

  although 
  the 
  beaded 
  row 
  of 
  granules 
  on 
  the 
  upper 
  margin 
  of 
  the 
  

   mobile 
  finger 
  is 
  much 
  less 
  distinctly 
  marked 
  than 
  in 
  the 
  specimen 
  

   figured 
  by 
  De 
  Haan. 
  

  

  Several 
  species 
  of 
  this 
  genus 
  have 
  been 
  described 
  agreeing 
  with 
  

   S. 
  hidens 
  in 
  the 
  bideutate 
  lateral 
  margins 
  of 
  the 
  carapace, 
  and 
  in 
  

   having 
  two 
  small 
  oblique 
  pectinated 
  ridges 
  on 
  the 
  upper 
  surface 
  of 
  

   the 
  palm. 
  Of 
  these, 
  I 
  regard 
  S. 
  lividum 
  and 
  S. 
  guttatum, 
  A. 
  M.- 
  

   Edwards 
  *, 
  as 
  very 
  doubtfully 
  distinct. 
  

  

  S. 
  dussumieri, 
  M.-Edwards 
  f, 
  from 
  Bombay, 
  is 
  very 
  briefly 
  cha- 
  

   racterized; 
  but 
  as 
  the 
  words 
  " 
  pouce 
  subcrenele 
  " 
  occur 
  in 
  the 
  de- 
  

   scription, 
  it 
  may 
  be 
  that 
  our 
  specimens 
  belong 
  to 
  it. 
  

  

  There 
  are 
  specimens 
  that 
  I 
  refer, 
  at 
  least 
  provisionally, 
  to 
  this 
  

   species 
  in 
  the 
  collection 
  of 
  the 
  Museum 
  from 
  the 
  Philippine 
  Islands 
  

   (Cuming, 
  Ve 
  itch), 
  Koo-Kcang-iian 
  {H.M.S. 
  ' 
  Samcarmg'), 
  Malaysian 
  

   Seas 
  without 
  locality 
  (Dr. 
  P. 
  Blecl-er), 
  and 
  New 
  Hebrides 
  (J. 
  Macgil- 
  

   livray). 
  This 
  latter 
  example 
  does 
  not 
  differ 
  appreciably 
  from 
  the 
  

   figure 
  of 
  S. 
  lividum, 
  A. 
  M.-Edw., 
  founded 
  on 
  a 
  New-Caledonian 
  

   example 
  (vide 
  N. 
  Arch. 
  Mus. 
  H. 
  N. 
  ix. 
  p. 
  303, 
  pi. 
  xvi. 
  fig 
  2, 
  1873). 
  

   This, 
  as 
  M. 
  de 
  Man 
  has 
  shown, 
  is 
  a 
  species 
  ranging 
  throughout 
  the 
  

   Oriental 
  region. 
  

  

  There 
  are, 
  besides, 
  in 
  the 
  collection 
  two 
  very 
  small 
  specimens 
  of 
  

   a 
  species 
  of 
  this 
  genus 
  belonging 
  to 
  the 
  section 
  having 
  a 
  carapace 
  

   with 
  entire 
  lateral 
  margins, 
  which 
  I 
  will 
  not 
  venture 
  to 
  determine. 
  

   The 
  larger, 
  a 
  female, 
  is 
  from 
  Port 
  Jackson 
  (0-5 
  fms.), 
  the 
  smaller, 
  

   a 
  male, 
  from 
  Port 
  Curtis. 
  It 
  cannot, 
  I 
  think, 
  be 
  identified 
  with 
  

   Sesarma 
  ergthrodactj/la, 
  Hess, 
  from 
  Sydney 
  J, 
  in 
  which 
  the 
  outer 
  

   border 
  of 
  the 
  mobile 
  finger 
  is 
  ribbed, 
  and 
  the 
  inner 
  provided 
  with 
  

   two 
  larger 
  and 
  several 
  smaller 
  teeth, 
  &:c. 
  

  

  92. 
  Pinnotheres 
  villosulus. 
  

  

  ? 
  Pinnotheres 
  villosulus, 
  Oiiemi-Meneville, 
  Cr. 
  in 
  Voyage 
  de 
  la 
  Co- 
  

   quille, 
  Zool. 
  ii. 
  p, 
  13 
  (1830) 
  ; 
  Icon. 
  E'egne 
  Animal, 
  Or. 
  p. 
  7, 
  pi. 
  iv. 
  

   tig. 
  6 
  (1829-44). 
  

  

  ? 
  Piunotheres 
  villosus, 
  M.-Edwards, 
  Ann. 
  Sci. 
  Nat. 
  &6x. 
  3, 
  Zool. 
  xx. 
  

   p. 
  218, 
  pi. 
  xi. 
  fig. 
  8 
  (1853). 
  

  

  A 
  female 
  in 
  Dr. 
  Coppinger's 
  collection, 
  obtained 
  at 
  Warrior 
  Eeef, 
  

   Torres 
  Straits, 
  agrees 
  in 
  nearly 
  all 
  particulars 
  with 
  M. 
  Guerin's 
  

   description 
  based 
  on 
  specimens 
  from 
  Timor, 
  and 
  the 
  maxLUipede 
  is 
  

   almost 
  exactly 
  of 
  the 
  form 
  delineated 
  by 
  Milne-Edwards. 
  Guerin, 
  

   however, 
  describes 
  the 
  front 
  as 
  emarginate, 
  whereas 
  in 
  the 
  specimen 
  

   I 
  have 
  before 
  me 
  it 
  is 
  triangulate 
  and 
  deflexed. 
  In 
  the 
  slight 
  out- 
  

   line 
  sketch 
  of 
  the 
  front 
  and 
  antennce 
  in 
  his 
  ' 
  Iconographie 
  ' 
  the 
  

   rostrum 
  appears, 
  however, 
  to 
  be 
  triangulate 
  and 
  bent 
  down 
  between 
  

   the 
  oblique 
  autennules 
  just 
  as 
  in 
  Dr. 
  Coppinger's 
  specimen. 
  I 
  prefer, 
  

   therefore, 
  to 
  refer 
  the 
  latter 
  provisionally 
  to 
  Guerin-Mencville's 
  

   species 
  rather 
  than 
  to 
  incur 
  the 
  risk 
  of 
  adding 
  needlessly 
  to 
  the 
  

  

  * 
  N. 
  Arch. 
  Mus. 
  Hist. 
  Nat. 
  v. 
  Bulletin, 
  pp. 
  25, 
  26 
  (1869). 
  

  

  t 
  Ann. 
  Sci. 
  Nat. 
  ser. 
  3, 
  Zool. 
  xx. 
  p. 
  185 
  (1853). 
  

  

  \ 
  Archiv. 
  Mus. 
  Hist. 
  Nat. 
  p. 
  151, 
  pi. 
  vi. 
  fig. 
  10 
  (1865). 
  

  

  