95 
the  posterior  border  of  the  hand  the  external  and  internal  are  of 
about  equal  strenght,  while  the  median  one  is  almost  obsolete;  digiti 
short  and  in  contact  throughout,  the  movable  about  equal  in  lenght 
to  or  perhaps  a  little  longer  than  the  hand-back. 
Legs  almost  smooth,  the  posterior  two  more  granular  than  the 
anterior  two  ;  the  distal  tibial  segment  much  longer  than  the  proximal. 
Pectines  with  three  teeth. 
Measurements  in  millimeters.  Total  length  19,  céphalothorax,  length 
2.8,  width  2.5;  tail;  length  10,  length  of  first  three  segments  3.5, 
of  the  5th  2.5,  of  vesicle  and  aculeus  3;  manus  width  2.2,  length 
of  hand-back  2.5,  of  movable  digit  2.6. 
This  species  differs  from  variegatus  and  borneensis  in  its  much 
narrower  hand ,  from  truncatus  in  at  least  the  absence  of  keels  on  the 
upper  surface  of  the  fifth  caudal  segment,  from  cavernicola  in  having 
a  wider  hand  and  the  median  keel  on  its  upper  surface  obsolete  — 
a  character  in  which  as  well  as  in  its  smooth  hands,  it  further  differs 
from  variegatus. 
Sub.  Fam.  Scorpionini. 
Scorpio. 
8.  Scorpio  indicus,  (Linn.)  Thor.  (Pl.  VI,  Fig.  6). 
Syn.  Buthus  cyaneus,  C.  Koch.  Die  Arachn.  III,  p.  75,  fig.  225. 
„        „      reticulatus,     „       „         „      IV,  p.  25,  flg.  265. 
„    Pandinus  indicus,  Thoreil,  Etudes  Scorpiol.  p.  208. 
„         „  „  „       Ann.  Mus.  Genov.  (2),  VI,  pp.  412,  414. 
Many  adult  and  immature  specimens  of  both  sexes  from  Buitenzorg 
in  Java. 
The  colour  of  this  species  is  green  or  nearly  black,  being  generally 
more  as  less  tinted  with  ferruginous.  The  vesicle  is  either  piceous  or 
ferruginous  in  the  adult,  but  in  the  young  it  is  entirely  flavous. 
Apart  from  its  larger  pectines  and  divided  genital  operculum,  the 
male  is  not  furnished  with  striking  sexual  characters.  The  tail,  ho- 
wever, is  a  little  longer  than  in  the  female. 
This  species  is  evidently  very  common  in  Java  and  I  am  not  ac- 
quainted with  any  reliable  evidence  of  its  occurence  elsewhere.  In 
Keyserling's  collection,  however,  there  is  a  single  specimen  of  it  tic- 
