399 
Type  Sp.  chrysodirus,  nov. 
To  this  genus  belongs  Sp.  antipodum  Newp.  ;  and  also  in  all  pro- 
bability heteroporus,  Porat  (Bih.  Sv.  Yet.  Akad.  Handl.  IV,  n°.  7, 
p.  37)  from  Java;  and  pulcher  and  punctifrons  of  this  same  author 
(Ann.  Soc.  Ent.  Belg  XXXII,  pp.  254-255)  from  New  Caledonia. 
96.  Spirobolellus  chrysodirus  sp.  n.  Pl.  XXII,  fig.  30  —  30b. 
Sumatra:  Padang.  Two  examples. 
Colour-,  head  fuscous  above,  pale  below;  collum  entirely  yellow; 
dorsal  surface  pale  at  the  sides  with  a  conspicuous  median  black 
longitudinal  line;  the  sides  of  the  body  fuscous,  the  lower  surface 
pale;  anal  tergite  fuscous,  valves  fuscous  in  front,  pale  behind;  legs 
and  antennae  pale. 
Head  smooth,  mesially  sulcate,  with  4  labral  pores  on  each  side; 
antennœ  short,  not  so  long  as  the  head;  eyes  separated  by  a  space 
greater  than  a  diameter,  each  consisting  of  about  20  ocelli  arranged  in 
4  isolated  transverse  rows. 
Collum  large,  extending  laterally  as  low  as  the  second,  its  inferior 
angle  rounded,  its  anterior  and  posterior  border  sinuate,  with  a 
marginal  sulcus.  The  rest  of  the  somites  strongly  grooved  transversely, 
the  anterior  and  posterior  part  elevated  on  each  side  of  this  groove; 
the  inferior  part  of  each  somite  striate,  the  striae  of  the  anterior 
portion  continued  over  the  dorsal  surface  in  front  of  the  groove  as 
a  series  of  abbreviated  striae  which  show  a  tendency  to  take  on  a 
crescentic  form;  upper  part  of  the  posterior  portion  smooth.  Sterna 
striate.  Pores  conspicuous,  above  the  middle  of  the.  side,  in  the 
posterior  part  of  the  somite,  small,  smooth,  tergite  projecting  just 
beyond  the  summit  of  the  valves  as  an  obtusely  angular  process; 
valves  convex,  with  margins  not  compressed.  Sternum  with  its  pos- 
terior edge  nearly  straight  from  side  to  side. 
Legs  moderately  long,  with  a  single  seta  on  the  lower  surface  of 
each  segment. 
Number  of  somites  36—37. 
Length  22  mm. 
Allied  to  Sp.  heteroporus  of  Porat.  (Bih.  Sv.  Yet.  Akad.  IY,  n°.  7, 
pp.  37—38)  from  Java.  But  the  two  appear  to  differ  in  colour,  and 
certainly  in  the  fact  that  the  anterior  segments  in  Porat 's  species 
are  described  as  excavated  beneath. 
