388 
obtained  the  species  in  Sumatra,  there  is  little  doubt  that  it  does 
not  exist  in  China.  I  regard  this  species  provisionally  as  a  Spirostreptus, 
because  it  seems  to  be  allied  to  S.  sebce,  Brandt,  the  type  of  the 
genus  (Bull.  Mose.  VI,  p.  203,  1833). 
9  Colour  ;  head  castaneous ,  antennae  fuscous ,  legs  ochraceous ,  somi- 
tes piceo  castaneous ,  paler  anteriorly. 
Body  long  and  rather  slender. 
Head  nearly  smooth,  slightly  rugulose  below  and  very  lightly  sculp- 
tured above,  with  frontal  sulcus.  Eyes  large,  with  inner  angle  acute, 
composed  of  about  60  ocelli  arranged  in  about  7  transverse  series, 
the  distance  between  them  less  than  a  diameter.  Antennae  rather 
short,  a  little  longer  than  the  head,  but  not  projecting  beyond  the 
first  tergite.  The  first  tergite  with  anterior  and  posterior  borders  lightly 
emarginate  laterally,  the  anterior  angle  rounded  and  thickened,  the 
sulcus  extending  up  to  the  eye,  the  posterior  angle  a  little  more 
rounded  than  the  anterior,  a  few  anteriorly  abbreviated  striae  above 
it.  All  the  tergites  closely  and  finely  striolate  and  punctulate,  concen- 
trically striolate  in  front,  the  transverse  sulcus  very  strong,  sinuate 
opposite  the  pore,  the  area  behind  it  a  little  higher  than  the  area 
in  front  of  it;  the  inferior  longitudinal  striae  extending  almost  up  to 
the  pore,  which  is  situated  in  the  middle  of  the  side  just  behind  the 
sulcus.  Sterna  smooth.  Ventral  grooves  small.  Anal  somite  of  moderate 
size,  the  tergite  marked  with  a  transverse  constriction,  the  caudal 
process  small,  covering  but  not  projecting  beyond  the  edges  of  the 
valves,  the  valves  lightly  convex,  their  margins  faintly  constricted 
above;  sternite  angled  or  almost  straight  across,  separated  by  a 
groove  from  the  preceding  sclerite. 
Legs  long,  with  a  seta  above  and  one  below  the  claw,  hairy  on 
the  lower  surface  of  each  segment,  those  at  the  anterior  end  of  the 
body  more  hairy. 
cf.  Slenderer  than  the  Ç,  with  the  collum  laterally  enlarged;  4th 
a  5th  segments  of  the  legs  padded  beneath. 
Copulatory  feet  as  in  figure. 
Number  of  segments  71-79.  Length  up  to  about  215  mm. 
Family  spirobolid.#i. 
Two  species  were  originally  referred  to  the  genus  Spirobolus,  namely 
olfersii  and  bungii,  the  former  from  S.  America,  the  latter  from  Pekin. 
