﻿Mr. 
  R. 
  I. 
  Pocock 
  on 
  a 
  new 
  Scorpion 
  from 
  Madagascar. 
  461 
  

  

  LV. 
  — 
  Another 
  new 
  Species 
  of 
  Scorpion 
  from 
  Madagascar. 
  

   By 
  R. 
  I. 
  Pocock, 
  of 
  the 
  British 
  Museum 
  (Natural 
  

  

  History). 
  

  

  Towards 
  the 
  beginning 
  of 
  April, 
  and 
  too 
  late 
  to 
  receive 
  

   notice 
  in 
  my 
  paper 
  on 
  Buthida? 
  for 
  the 
  ' 
  Annals 
  ' 
  of 
  that 
  

   month, 
  Mr. 
  Ransome, 
  to 
  whom 
  we 
  owe 
  the 
  discovery 
  of 
  that 
  

   interesting 
  new 
  scorpion, 
  Bulhus 
  piceus, 
  brought 
  to 
  the 
  

   Natural-History 
  Museum 
  a 
  third 
  specimen 
  of 
  Buthus 
  from 
  

   Madagascar, 
  of 
  which, 
  since 
  it 
  is 
  new 
  and 
  of 
  special 
  in- 
  

   terest, 
  I 
  publish 
  the 
  following 
  description 
  : 
  — 
  

  

  Buthus 
  lobidenS) 
  sp. 
  n. 
  

  

  Colour. 
  — 
  Trunk 
  above 
  dull, 
  pitchy 
  ; 
  legs, 
  palpi, 
  and 
  vesicle 
  

   paler; 
  cheliceraa, 
  abdominal 
  sternites, 
  and 
  coxae 
  paler 
  than 
  

   upper 
  surface 
  of 
  trunk, 
  and 
  shining. 
  

  

  Cephalothorax 
  without 
  trace 
  of 
  keels, 
  almost 
  wholly 
  covered 
  

   with 
  granules 
  ; 
  anterior 
  border 
  lightly 
  sinuate 
  and 
  furnished 
  

   with 
  a 
  series 
  of 
  somewhat 
  larger 
  granules 
  ; 
  median 
  eyes 
  large, 
  

   situated 
  well 
  in 
  the 
  anterior 
  half 
  of 
  the 
  cephalothorax 
  ; 
  ocular 
  

   tubercle 
  deeply 
  cleft, 
  finely 
  granular 
  on 
  each 
  side 
  of 
  the 
  cleft 
  ; 
  

   the 
  posterior 
  median 
  and 
  lateral 
  sulci 
  well 
  marked, 
  but 
  less 
  

   well 
  marked 
  than 
  in 
  B. 
  piceus. 
  

  

  Tergites 
  covered 
  with 
  granules, 
  which 
  are 
  coarser 
  behind 
  

   than 
  in 
  front 
  ; 
  the 
  first 
  six 
  furnished 
  behind 
  with 
  a 
  single 
  

   small 
  median 
  keel 
  : 
  the 
  seventh 
  furnished 
  behind 
  on 
  each 
  

   side 
  with 
  two 
  granular 
  keels, 
  which 
  do 
  not 
  unite 
  in 
  front, 
  

   but 
  attain 
  the 
  posterior 
  margin 
  behind. 
  

  

  Sternites, 
  except 
  the 
  last, 
  which 
  is 
  obsoletely 
  serially 
  

   granular 
  behind, 
  smooth. 
  Stigmata 
  slit-like 
  ; 
  the 
  anterior 
  

   border 
  of 
  the 
  aperture 
  normal 
  ; 
  posterior 
  border 
  incomplete, 
  

   not 
  sharply 
  compressed, 
  as 
  is 
  the 
  anterior 
  border. 
  

  

  Tail 
  very 
  slightly 
  thinner 
  at 
  the 
  apex 
  than 
  at 
  the 
  base 
  ; 
  

   first 
  segment 
  furnished 
  with 
  ten 
  granular 
  keels, 
  intercarinal 
  

   spaces 
  sparsely 
  granular, 
  shallowly 
  excavated 
  above 
  ; 
  poste- 
  

   rior 
  granule 
  of 
  superior 
  keels 
  the 
  largest 
  ; 
  second 
  segment 
  

   furnished 
  with 
  eight 
  keels, 
  the 
  median 
  lateral 
  keel 
  being 
  

   represented 
  by 
  a 
  few 
  granules 
  only 
  in 
  the 
  posterior 
  half 
  of 
  

   the 
  segment 
  ; 
  intercarinal 
  spaces 
  more 
  sparsely 
  granular 
  than 
  

   those 
  of 
  the 
  first 
  segment 
  ; 
  slightly 
  more 
  deeply 
  excavated 
  

   above 
  than 
  is 
  the 
  first 
  segment 
  ; 
  as 
  in 
  the 
  first 
  and 
  the 
  suc- 
  

   ceeding 
  segments, 
  except 
  the 
  fifth, 
  the 
  posterior 
  granule 
  of 
  

   the 
  superior 
  keels 
  is 
  the 
  largest 
  ; 
  third 
  segment 
  differing 
  from 
  

   the 
  second 
  as 
  the 
  second 
  does 
  from 
  the 
  first, 
  except 
  that 
  there 
  

   Ann. 
  i£- 
  Mag. 
  N. 
  Hist. 
  Ser. 
  6. 
  Vol. 
  iii. 
  32 
  

  

  