87 
only  say  that  I  should  at  once  have  adopted  his  opinion  if  Gervais' 
description  had  been  the  only  one  that  exists  of  the  species.  But 
since  Simon  has  told  us  that  there  are  four  keels  on  the  last  abdominal 
sternite,  that  the  last  three  sternites  are  evidently  granular  and  that 
the  ante-ocular  portion  of  the  cephalotorax  is  not  infuscate,  I  can  not 
but  think  that  it  is  distinct  from  our  mucronatus.  For  all  the  specimens 
of  mucronatus  that  I  have  seen  have  the  céphalothorax  deeply  infus- 
cate in  front ,  the  third  and  forth  sternites  entirely  smooth  and  certainly 
what  Simon  would,  describe  as  only  two  keels  on  the  fifth  sternite. 
The  distribution  of  this  species  is  very  wide  —  Madagascar  l)  (Ger- 
vais), Japan  (Mus.  Brit.),  China,  Sunda  Islands,  Philippines  (Kraepe- 
lin),  Burma  (Thorell,  Mus.  Brit.),  Java  (Simon,  Koch,  Mus.  Brit.), 
Sumatra  (Simon),  Cambodia  (Mus.  Brit.),  Siam,  Cochin  China  (Simon), 
Flores  and  Saleyer  (Max  Weber),  New  Zealand  (Thorell). 
2.  Isometrus  flavimanus,  Thorell.  (Pl.  VI.  fig.  2  —  2a). 
Ann.  Mus.  Genov.  (2),  VI,  p.  409. 
Three  specimens ,  two  adult  9  and  one  young,  from  Singkarah  (Suma- 
tra). Dr.  Thorells'  type  was  from  Ajer  Mantjur  in  the  same  island. 
The  general  tint  of  the  upper  surface  is  fuscous,  with  a  clearly 
defined  though  not  conspicuons  >  shaped  paler  mark  on  the  tergites. 
The  pectinal  teeth  vary  from  15  to  17. 
The  length  of  the  largest  specimen  is  42  mm.  The  specimen  des- 
cribed by  Dr.  Thorell  was  a  joung  cf  measuring  only  33  millim.  in 
total  length,  and  possessing  19  pectinal  teeth. 
The  species  that  I  described  as  hosei 2)  from  Baram  in  Sarawak  is,  I 
find,  very  closely  related  to,  even  if  it  be  not  identical  with  this  species. 
Indeed  apart  from  the  colouring  it  is  hard  to  find  any  valuable  differen- 
tial characters.  I.  hosei  is  of  a  uniform  deep  black  on  the  tail  and  upper 
surface  of  the  trunk,  the  hand  and  vesicle  being  rufopiceous  and  the 
legs  not  variegated  as  in  flavimanus.  Moreover  the  last  abdominal  ster- 
nite has  four  conspicous  granular  keels;  whereas  in  I.  flavimanus  the 
external  keels  are  nearly  obsolete.  But  these  characters  will ,  I  suspect, 
1)  In  his  original  description  of  curmdigitatvs  in  vol.  IV  of  the  Arch.  Mus.,  Gervais 
states  that  the  locality  is  Madagascar,  although  in  the  Ins.  Apt.  p.  48  he  says  «Ori- 
gine inconnue". 
2)  Journ.  Linn.  Soc.  Zool.  XXIII,  436—é37,  pl.  XXIII,  fig.  2. 
