311 
Length  12J-  mm. 
Only  two  species  of  Archilithobius  have  been  previously  recorded 
from  the  Oriental  Regio a.  The  first  was  from  the  Nicobar  Islands  and  was 
named  grossidens  by  Meinert.  It  differs  from  the  species  just  charac- 
terised in  having  more  than  28  antennal  segments ,  and  many  more 
ocelli  composing  each  row.  The  second,  named  birmanicus  by  myself, 
is  very  nearly  related  to  the  one  now  described  ;  but  there  are  5  or  6 
teeth  on  each  side  of  the  maxillary  coxal  plate. 
4.  Lithobius  {Archilithobius)  javanicus  sp.  n.  Pl.  XIX ,  fig.  3. 
Java:  Tjibodas.  A  single  male,  probably  immature,  specimen. 
Colour  pale  purple  ;  head  plate ,  apex  of  antennae  and  tarsal  segments 
of  legs  testaceous. 
Head-plate  sub-circular,  evenly  convex  above. 
Antennas  short,  hirsute,  composed  of  20  segments  of  which  the 
apical  is  as  long  as  the  three  that  precede  it. 
Eyes  composed  of  about  6  ocelli,  of  which  the  superior  median 
is  much  the  largest,  arranged  in  two  rows  of  ocelli,  whereof  three 
are  large  and  three  very  small. 
Maxillary  coxoe  furnished  on  each  side  with  four  sharp  teeth 
whereof  the  external  is  very  small. 
Tergites  much  resembling  in  form  those  of  the  preceding  species; 
but  considerably  more  strongly  wrinkled  and  not  noticeably  spinulose, 
with  the  angles  squared  and  the  posterior  borders  straight. 
Sternites  obscurely  sulcate. 
Coxal  pores  small,  round;  2,  2,  2,  2. 
Anal  legs  armed  beneath  as  follows:  0,  2,  1,0;  claw  with  an 
accessory,  superior  smaller  claw. 
Length  7  mm. 
Evidently  allied  to  the  preceding  species  but  differing  in  a  number 
of  characters  sufficient  to  justify  the  conclusion  of  its  distinctness. 
Thus  it  is  much  smaller;  there  is  a  greater  number  of  coxal  teeth, 
the  antennae  are  hairy  and  the  ocelli  vary  more  in  size.  Moreover 
the  angles  of  the  terga  are  more  squared  and  the  posterior  borders 
straighter.  In  the  last  character  it  also  differs  from  birmanicus. 
