﻿On 
  Scorpions 
  and 
  SoUfugm 
  from 
  the 
  Sudan. 
  217 
  

  

  A 
  broad 
  silvery 
  band 
  tapering 
  on 
  the 
  caudal 
  peduncle, 
  

   continued 
  to 
  end 
  of 
  middle 
  caudal 
  rays. 
  No 
  humeral 
  or 
  

   caudal 
  spots. 
  

  

  XXV. 
  — 
  Scorpions 
  and 
  Solifuyce 
  collected 
  by 
  Captain 
  S. 
  S. 
  

   Flower 
  in 
  the 
  Anylo- 
  Egyptian 
  Sudan. 
  By 
  S. 
  HlRST. 
  

  

  (Published 
  by 
  permission 
  of 
  the 
  Trustees 
  of 
  the 
  British 
  Museum.) 
  

  

  Scorpions. 
  

  

  Buthus 
  citrinus, 
  H. 
  & 
  E. 
  

  

  Loc. 
  Wady 
  Haifa. 
  

  

  Buthus 
  acutecarinatus, 
  Sim. 
  

  

  Loc. 
  Khartoum 
  and 
  the 
  Senaar 
  Province; 
  in 
  the 
  British 
  

   Museum 
  collection 
  there 
  are 
  present 
  also 
  examples 
  from 
  

   Atbara 
  {Dr. 
  S. 
  K. 
  Malouf), 
  and 
  from 
  Thebes 
  and 
  Ghizeh 
  

   (6'. 
  S. 
  F.) 
  in 
  Egypt. 
  

  

  Buthus 
  minax, 
  L. 
  Koch. 
  

  

  Loc. 
  Captain 
  Flower 
  collected 
  examples 
  of 
  this 
  species 
  at 
  

   Khartoum 
  ; 
  the 
  mouth 
  of 
  the 
  Finder 
  River 
  ; 
  Senaar 
  and 
  

   Roseires. 
  There 
  are 
  also 
  specimens 
  in 
  the 
  British 
  Museum 
  

   collection 
  from 
  Abyssinia. 
  

  

  Remarks. 
  — 
  The 
  male 
  of 
  Buthus 
  * 
  minax 
  differs 
  from 
  that 
  of 
  

   B. 
  emini, 
  Poc., 
  principally 
  in 
  the 
  structure 
  of 
  the 
  tail, 
  the 
  

   upper 
  keels 
  of 
  which 
  are 
  very 
  much 
  weaker, 
  the 
  lateral 
  ones 
  

   being 
  exceedingly 
  weak 
  or 
  absent 
  in 
  segments 
  2-4 
  ; 
  more- 
  

   over, 
  the 
  upper 
  keel 
  of 
  the 
  fifth 
  caudal 
  segment 
  is 
  represented 
  

   by 
  only 
  a 
  very 
  short 
  series 
  of 
  granules 
  and 
  the 
  intercarinal 
  

   spaces 
  of 
  the 
  caudal 
  segments 
  are 
  not 
  nearly 
  so 
  strongly 
  

   granular 
  as 
  is 
  the 
  case 
  in 
  B. 
  emini. 
  

  

  In 
  the 
  male 
  of 
  B. 
  emini, 
  on 
  the 
  other 
  hand, 
  segments 
  1-4= 
  

   of 
  the 
  tail 
  are 
  each 
  furnished 
  with 
  ten 
  well-defined 
  granular 
  

   keels, 
  the 
  upper 
  and 
  lateral 
  keels 
  being 
  quite 
  distinct 
  and 
  

   composed 
  of 
  separate 
  granules, 
  which 
  show 
  no 
  tendency 
  to 
  fuse 
  

   with 
  one 
  another 
  ; 
  the 
  fifth 
  caudal 
  segment 
  has 
  a 
  well-marked 
  

   upper 
  keel, 
  which 
  runs 
  the 
  entire 
  length 
  of 
  the 
  segment. 
  

  

  [Buthus 
  polystictus, 
  Poc, 
  is 
  very 
  closely 
  allied 
  to 
  B. 
  minax 
  

   and 
  B. 
  emini, 
  and 
  Prof. 
  Kraepelin 
  f 
  believes 
  that 
  it 
  is 
  only 
  

  

  * 
  Birula's 
  observations 
  on 
  Buthus 
  minax 
  and 
  its 
  allies 
  (Sitz. 
  Ber. 
  Ak. 
  

   Wiss. 
  cxvii. 
  p. 
  141, 
  1908) 
  should 
  be 
  consulted. 
  

   t 
  Zool. 
  Jahrb. 
  (Syst.) 
  xviii. 
  p. 
  560(1903). 
  

  

  