﻿530 
  COLLECTIONS 
  FROir 
  THE 
  WESTERN 
  INDIAN 
  OCEAN. 
  

  

  23. 
  ActaBodes 
  tomentosus 
  (M.-Echu.). 
  

  

  Darros 
  Island, 
  beach, 
  an 
  adult 
  female 
  (No. 
  200). 
  

  

  Specimens 
  of 
  this 
  very 
  common 
  Oriental 
  species 
  are 
  in 
  the 
  British- 
  

   Museum 
  collection 
  from 
  the 
  Mauritius 
  {Lady 
  F. 
  Cole) 
  ; 
  liodriguez 
  

   (Tmiviit-of- 
  Venus 
  Exped.) 
  ; 
  Seychelles 
  {Dr. 
  E. 
  P. 
  Wright); 
  Red 
  

   Sea, 
  Daedalus 
  Shoal 
  {Lt.-Gol. 
  Playfair) 
  ; 
  Duke 
  of 
  York 
  Island 
  {Rev. 
  

   G. 
  Brown); 
  Sulu 
  Islands 
  {U.S. 
  Exploring 
  Exped.) 
  ; 
  Philippines 
  

   {Cuming); 
  Goto 
  Islands 
  {Capt. 
  II. 
  C. 
  St. 
  John); 
  Port 
  Essington, 
  

   Minerva 
  Eeef, 
  and 
  Fiji 
  Islands 
  {II. 
  M.S. 
  ' 
  Herald 
  ') 
  ; 
  Samoa 
  Islands 
  

   {Rev. 
  S. 
  J. 
  Whitmee) 
  ; 
  and 
  Sandwich 
  Islands 
  ( 
  W. 
  H. 
  Pease). 
  

  

  24. 
  Leptodius 
  exaratus 
  {M.-Ediv.). 
  

  

  A 
  specimen 
  from 
  the 
  beach 
  at 
  Darros 
  Island 
  (No. 
  200) 
  and 
  Mahc 
  

   Island 
  (No, 
  190) 
  are 
  referred 
  to 
  this 
  species, 
  and 
  may 
  perhaps 
  be 
  

   best 
  regarded 
  as 
  belonging 
  to 
  the 
  variety 
  sangidneus, 
  M. 
  -Edwards, 
  

   which 
  is 
  said 
  to 
  be 
  common 
  at 
  the 
  Mauritius, 
  although 
  they 
  have 
  

   not 
  the 
  additional 
  tooth 
  behind 
  the 
  last 
  of 
  the 
  normal 
  antero-lateral 
  

   teeth 
  which 
  usually 
  characterizes 
  sanguineus. 
  From 
  the 
  variety 
  

   designated 
  distinguendas 
  by 
  De 
  Haan* 
  they 
  are 
  scarcely 
  distin- 
  

   guishable, 
  except 
  by 
  their 
  somewhat 
  less 
  convex 
  and 
  rugose 
  cara- 
  

   pace. 
  I 
  have 
  referred 
  to 
  the 
  uncertainty- 
  of 
  the 
  specific 
  distinctions 
  

   in 
  this 
  genus 
  on 
  p. 
  214. 
  

  

  If, 
  as 
  Dr. 
  Eichter 
  surmises, 
  the 
  Xantho 
  quinqnedentatns 
  of 
  Krauss 
  

   is 
  to 
  be 
  regarded 
  as 
  synonymous 
  with 
  this 
  species. 
  Natal 
  must 
  be 
  

   added 
  to 
  the 
  recorded 
  localities 
  where 
  L. 
  exaratus 
  occurs 
  on 
  the 
  

   African 
  coast. 
  

  

  25, 
  Leptodius 
  exaratus, 
  var. 
  gracilis 
  {Dana). 
  

  

  Mozambique, 
  obtained 
  between 
  tide-marks 
  (Nos. 
  225, 
  227), 
  two 
  

   males 
  ; 
  Poivre 
  Island, 
  beach 
  (No, 
  108), 
  eight 
  specimens, 
  of 
  both 
  

   sexes 
  and 
  different 
  ages. 
  

  

  In 
  the 
  typical 
  condition 
  of 
  this 
  form 
  the 
  carapace 
  is 
  depressed 
  and 
  

   nearly 
  smooth 
  in 
  its 
  median 
  regions 
  : 
  there 
  are 
  four 
  distinct 
  antero- 
  

   lateral 
  teeth 
  (the 
  one 
  at 
  the 
  exterior 
  orbital 
  angle 
  being 
  usually 
  

   obsolete) 
  ; 
  the 
  first 
  of 
  the 
  four 
  is 
  the 
  smallest, 
  with 
  its 
  apex 
  obscurely 
  

   defined 
  ; 
  the 
  three 
  posterior 
  are 
  broad, 
  triangulate, 
  and 
  very 
  distinct. 
  

   The 
  chclipedes 
  are 
  nearly 
  smooth, 
  and 
  have 
  their 
  fingers 
  strongly 
  

   arcuated, 
  the 
  lower, 
  and 
  sometimes 
  the 
  upper, 
  finger 
  being 
  strongly 
  

   toothed 
  on 
  its 
  inner 
  margin. 
  On 
  p, 
  214 
  I 
  have 
  referred 
  to 
  the 
  

   localities 
  whence 
  the 
  Museum 
  possesses 
  specimens 
  of 
  this 
  variety, 
  

   and 
  to 
  its 
  apparent 
  connexion 
  with 
  the 
  typical 
  L. 
  exaratus 
  ; 
  never- 
  

   theless 
  it 
  is 
  usually 
  easily 
  distinguishable 
  by 
  the 
  characters 
  men- 
  

   tioned 
  above, 
  

  

  * 
  Xantho 
  diatingucndus, 
  De 
  Haan, 
  Faim. 
  Japon., 
  Crust, 
  p. 
  48, 
  pi. 
  xiii. 
  fig. 
  7 
  

   (18^5), 
  

  

  