365 
with  much  stronger  sculpturing  and  ornamented  with  distinct  ridges 
separated  by  elongate  grooves.  The  lateral  surface  smooth;  the  inferior 
keel  present  only  on  the  2^,  S**  and  4*  somites.  The  tubercles  of  the 
anal  somite  much  larger.  The  caudal  process  less  compressed,  with  a 
distinct  lateral  tubercle. 
Lenght  about  33  mm.  width  of  10th  somite  3.3. 
cf.  Relativily  more  slender  than  in  carneum  (length  28,  width  2). 
The  process  on  the  sternum  of  the  8th  somite ,  more  erect.  Copulatory 
foot  slender,  curved,  dilated  distally  and  terminating  in  two  processes, 
an  external  and  an  internal;  the  external  laminate  and  constituting 
a  sheath  for  the  internal,  which  is  more  slender,  more  cylindrical 
and  with  a  sigmoid  flexure. 
A  great  number  of  specimens  were  obtained ,  most  of  them  being 
of  a  pale  concolorous  tint  throughout.  In  all  the  examples,  however, 
whether  testaceous  or  piceous  the  antennae  retain  their  black  tint. 
60.  Strongylosoma  subflavurn,  sp.  n. 
Sumatra:  Paningahan.  Two  male  specimens. 
Closely  resembling  the  preceding  in  its  bifid  anal  sternite ,  the  form 
of  the  copulatory  feet,  and  of  the  sternal  lamina  of  the  fifth  somite, 
in  its  slender  build ,  colouration  etc.  ;  but  recognisable  by  the  following 
features. 
The  keels  are  larger  and  more  fia  vous,  the  posterior  angles  being 
more  strongly  produced;  this  may  be  clearly  seen  in  the  fifth  somite, 
where  their  posterior  angles  are  produced  well  beyond  the  hinder 
border  of  the  dorsal  surface  ;  whereas  in  nigricorne  the  keels  of  this 
segment  are  not  produced  beyond  this  edge  of  the  dorsal  surface.  Again 
in  nigricorne  the  transverse  sulcus  of  the  tergites  is  strongly  marked, 
runs  almost  across  the  surface  from  keel  to  keel  and  is  well -developed 
on  the  5th  somite.  In  subflavurn,  on  the  contrary,  this  sulcus  is 
weaker  on  all  the  segments  and  is  somewhat  feebly  indicated  on  the 
5*  and  6«*. 
61.  Strongylosoma  subnigrum,  sp.  n.  Pl.  XXII,  fig.  7. 
Sumatra:  Manindjau.  A  single  male  example. 
Closely  related  to  both  the  preceding.  Differs  from  nigricorne  and 
subflavurn  in  that  the  lateral  surfaces  of  the  somites  are  pitch  black,  the 
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