﻿462 
  Mr. 
  R. 
  T. 
  Pocock 
  on 
  a 
  new 
  Scorpion 
  from 
  Madagascar. 
  

  

  is 
  no 
  trace 
  of 
  the 
  median 
  lateral 
  keel 
  and 
  the 
  inferior 
  median 
  

   keels 
  show 
  a 
  slight 
  tendency 
  to 
  fail 
  posteriorly 
  ; 
  fourth 
  seg- 
  

   ment 
  differing 
  from 
  the 
  third 
  as 
  the 
  third 
  does 
  from 
  the 
  

   second 
  ; 
  the 
  inferior 
  median 
  keels 
  entirely 
  breaking 
  up 
  behind 
  

   into 
  irregularly 
  arranged 
  granules 
  ; 
  upper 
  surface 
  of 
  fifth 
  

   segment 
  in 
  front 
  with 
  a 
  narrow 
  median 
  depression, 
  which 
  

   widens 
  behind 
  ; 
  bounded 
  laterally 
  by 
  granules 
  ; 
  lateral 
  sur- 
  

   face 
  beset 
  with 
  smaller 
  and 
  a 
  few 
  larger 
  granules 
  ; 
  inferior 
  

   surface 
  bounded 
  laterally 
  by 
  evenly 
  granular 
  keels, 
  furnished 
  

   with 
  a 
  median 
  granular 
  keel 
  and 
  beset 
  with 
  larger 
  and 
  smaller 
  

   granules 
  ; 
  vesicle 
  below 
  and 
  at 
  the 
  sides 
  sparsely 
  granular 
  

   and 
  scantily 
  hairy 
  ; 
  aculeus 
  slightly 
  curved. 
  

  

  Palp. 
  — 
  Under 
  surface 
  smooth 
  ; 
  humerus 
  furnished 
  above 
  

   with 
  two 
  granular 
  keels, 
  in 
  front 
  with 
  some 
  larger 
  scattered 
  

   granules 
  and 
  below 
  in 
  front 
  with 
  a 
  granular 
  keel 
  ; 
  brachium 
  

   with 
  a 
  single 
  short 
  series 
  of 
  granules 
  above 
  and 
  some 
  larger 
  

   granules 
  in 
  front 
  ; 
  hand 
  smooth, 
  without 
  keels, 
  as 
  thick 
  as 
  

   brachium 
  ; 
  fingers 
  slightly 
  curved 
  and 
  simple, 
  i. 
  e. 
  without 
  

   lobe 
  and 
  excavation 
  ; 
  hand-back 
  shorter 
  than 
  the 
  immovable 
  

   dactylus, 
  about 
  two 
  thirds 
  the 
  length 
  of 
  the 
  movable 
  dac- 
  

   tylus. 
  Femora 
  of 
  the 
  legs 
  externally 
  thickly 
  granular, 
  coxse 
  

   almost 
  smooth. 
  

  

  Legs 
  and 
  palpi 
  more 
  or 
  less 
  hairy. 
  

  

  Pectines 
  short, 
  scarcely 
  two 
  thirds 
  the 
  length 
  of 
  the 
  cepha- 
  

   lothorax, 
  furnished 
  with 
  sixteen 
  teeth 
  ; 
  the 
  basal 
  tooth 
  very 
  

   large, 
  lobate, 
  resembling 
  that 
  of 
  B. 
  piceus, 
  but 
  a 
  little 
  more 
  

   circular 
  in 
  form. 
  

  

  Measurements 
  in 
  millimetres. 
  — 
  Total 
  length 
  QQ 
  ; 
  length 
  o£ 
  

   cephalothorax 
  7j, 
  width 
  8 
  ; 
  distance 
  of 
  eyes 
  from 
  posterior 
  

   margin 
  A\ 
  ; 
  length 
  of 
  tail 
  39£, 
  of 
  first 
  two 
  segments 
  10; 
  

   length 
  of 
  first 
  4£, 
  width 
  4 
  ; 
  length 
  of 
  fifth 
  1\, 
  width 
  3£ 
  ; 
  

   length 
  of 
  vesicle 
  5\, 
  width 
  3£, 
  height 
  3^ 
  ; 
  length 
  of 
  aculeus 
  

   3| 
  ; 
  length 
  of 
  humerus 
  6^, 
  of 
  brachium 
  7\ 
  ; 
  width 
  of 
  bra- 
  

   chium 
  and 
  of 
  hand 
  ?)}? 
  ; 
  length 
  of 
  " 
  hand-back 
  " 
  5, 
  of 
  movable 
  

   finger 
  7f 
  , 
  of 
  immovable 
  finger 
  6f, 
  of 
  pecten 
  (not 
  including 
  

   apical 
  tooth) 
  A\. 
  

  

  A 
  single 
  female 
  specimen 
  from 
  Antongil 
  Bay, 
  Mada- 
  

   gascar, 
  collected 
  and 
  presented 
  to 
  the 
  British 
  Museum 
  by 
  

   Mr. 
  Lewis 
  H. 
  Ransome. 
  

  

  This 
  species 
  is 
  obviously 
  closely 
  allied 
  'to 
  B. 
  piceus 
  

   (Pocock, 
  Ann. 
  & 
  Mag. 
  Nat. 
  Hist. 
  (6) 
  iii. 
  p. 
  349, 
  pi. 
  xv. 
  

   fig. 
  8), 
  but 
  may 
  be 
  separated 
  from 
  it 
  by 
  the 
  following 
  cha- 
  

   racters 
  : 
  — 
  the 
  tail 
  is 
  much 
  more 
  slender 
  and 
  a 
  little 
  longer 
  ; 
  

   the 
  dactyli 
  are 
  longer 
  ; 
  there 
  is 
  no 
  large 
  tubercle 
  beneath 
  the 
  

   aculeus 
  of 
  the 
  caudal 
  vesicle 
  ; 
  the 
  stigmata 
  are 
  not 
  ovate. 
  

  

  