﻿350 
  On 
  some 
  new 
  and 
  old 
  Buthida?. 
  

  

  keels 
  ; 
  the 
  first 
  is 
  simple, 
  the 
  second 
  shows 
  faint 
  indications 
  

   of 
  a 
  posterior 
  median 
  granular 
  keel 
  and 
  of 
  a 
  shallow 
  depres- 
  

   sion 
  on 
  each 
  side 
  in 
  front 
  of 
  it, 
  features 
  which 
  become 
  gradu- 
  

   ally 
  more 
  conspicuous 
  until 
  the 
  sixtli 
  somite 
  is 
  reached 
  ; 
  

   seventh 
  tergite 
  with 
  a 
  conspicuous 
  depression 
  above 
  in 
  its 
  

   posterior 
  half, 
  the 
  median 
  keel 
  nearly 
  obsolete, 
  the 
  lateral 
  

   keels 
  well 
  shown 
  and 
  normal. 
  

  

  Sternites 
  shining, 
  smooth, 
  the 
  side 
  margins 
  only 
  showing 
  

   faint 
  signs 
  of 
  granulation 
  ; 
  the 
  last 
  with 
  the 
  four 
  series 
  of 
  

   granules 
  very 
  poorly 
  developed. 
  Stigmata 
  small, 
  short, 
  

   almost 
  ovate 
  ; 
  the 
  sternal 
  area 
  surrounding 
  them 
  manifestly 
  

   depressed. 
  

  

  Tail 
  somewhat 
  deeply 
  excavated 
  above, 
  slightly 
  attenua- 
  

   ted 
  ; 
  the 
  first 
  and 
  second 
  segments 
  furnished 
  with 
  ten 
  keels, 
  

   the 
  third 
  and 
  fourth 
  with 
  eight 
  ; 
  keels 
  very 
  strongly 
  granu- 
  

   late, 
  almost 
  denticulate 
  ; 
  the 
  superior 
  keels 
  on 
  the 
  second, 
  

   third, 
  and 
  fourth 
  segments 
  ending 
  behind 
  in 
  a 
  larger 
  tooth 
  ; 
  

   superior 
  intercarinal 
  space 
  nearly 
  smooth 
  ; 
  the 
  other 
  inter- 
  

   carinal 
  spaces 
  more 
  or 
  less 
  thickly 
  covered 
  with 
  fine 
  granules 
  ; 
  

   the 
  fifth 
  segment 
  not 
  lobate 
  posteriorly, 
  with 
  keels 
  evenly 
  

   granulate 
  throughout, 
  closely 
  resembling 
  in 
  fact 
  that 
  of, 
  e. 
  g., 
  

   B. 
  hottentotta. 
  

  

  Vesicle 
  large, 
  smooth 
  above, 
  coarsely, 
  sparsely, 
  serially 
  

   tubercular 
  beneath 
  ; 
  the 
  terminal 
  tubercle 
  beneath 
  the 
  aculeus 
  

   is 
  much 
  larger 
  than 
  the 
  others. 
  Aculeus 
  shorter 
  than 
  the 
  

   vesicle 
  and 
  gradually 
  and 
  gently 
  curved. 
  

  

  Palp. 
  — 
  Upper 
  surface 
  of 
  humerus, 
  except 
  for 
  the 
  granular 
  

   keels 
  which 
  bound 
  it 
  in 
  front 
  and 
  behind, 
  nearly 
  smooth 
  ; 
  

   anterior 
  surface 
  furnished 
  with 
  some 
  smaller 
  and 
  a 
  few 
  larger 
  

   granules 
  ; 
  brachium 
  obsoletely 
  keeled 
  above, 
  but 
  not 
  granu- 
  

   lar, 
  sparsely 
  but 
  conspicuously 
  dentate 
  in 
  front 
  ; 
  hand 
  quite 
  

   smooth, 
  a 
  little 
  wider 
  than 
  the 
  brachium, 
  about 
  as 
  long 
  as 
  the 
  

   immovable 
  finger 
  ; 
  length 
  of 
  " 
  hand-back 
  " 
  about 
  one 
  third 
  

   shorter 
  than 
  the 
  length 
  of 
  the 
  movable 
  finger, 
  but 
  consider- 
  

   ably 
  greater 
  than 
  the 
  width 
  of 
  the 
  hand. 
  Legs 
  supplied 
  with 
  

   the 
  usual 
  series 
  of 
  granules 
  ; 
  coxre 
  quite 
  smooth. 
  

  

  Pectines 
  short, 
  about 
  two 
  thirds 
  the 
  length 
  of 
  the 
  cephalo- 
  

   thorax, 
  furnished 
  with 
  17-18 
  sharp 
  teeth, 
  which 
  do 
  not 
  over- 
  

   lap 
  each 
  other 
  ; 
  the 
  basal 
  tooth 
  of 
  the 
  series 
  very 
  large 
  in- 
  

   deed, 
  widened, 
  lobate, 
  with 
  rounded 
  margin, 
  as 
  in 
  Grosphus 
  

   madagascarienstS) 
  and 
  not 
  distally 
  narrowed 
  and 
  dentiform, 
  as 
  

   in 
  B. 
  limbatus. 
  

  

  Measurements 
  in 
  millimetres. 
  — 
  Total 
  length 
  62 
  ; 
  length 
  of 
  

   cephalothorax 
  6^, 
  width 
  7^; 
  length 
  of 
  tail 
  36, 
  of 
  first 
  two 
  

   segments 
  9 
  ; 
  width 
  of 
  first 
  caudal 
  segment 
  4£, 
  of 
  fifth 
  3f 
  , 
  

   length 
  of 
  fifth 
  7, 
  of 
  vesicle 
  5, 
  of 
  aculeus 
  3 
  ; 
  width 
  and 
  height 
  

  

  