336 
and  slightly  paler  lateral  and  anterior  portions,  head  antennae,  legs 
and  anal  somite  nearly  white. 
Head  hairy;  antennae  long,  much  longer  than  the  head  and  ros- 
trum; the  2**  segment  twice  as  long  as  the  3**,  the  3'*,  4*  and 
5th  subequal  in  length. 
Body  stout,  the  tuberculiform  keels  beginning  on  the  8&  segment 
and  gradually  increasing  in  size  posteriorly. 
Legs  moderately  long,  the  2*a  segment  about  three  times  as  long 
as  the  l*t  and  about  as  long  as  the  3rd,  the  6&  the  longest. 
Number  of  segments  74-94. 
Length  up  to  40  mm. ,  width  3. 
In  the  proportion  of  length  to  width  this  species  seems  to  resemble 
S.  picteti  of  Humbert;  but  the  latter  appears  to  be  smaller,  is  of  a 
reddish  colour  and  has  the  2nd  ana  3rd  segments  of  the  antennae 
equal  in  length. 
One  immature  example  that  was  obtained  is  entirely  pale. 
32.  Siphonorhinus  angustus  sp.  n. 
Java:  Buitenzorg.  A  single  cf  specimen. 
Resembling  S.  pallipes  but  much  narrower  in  proportion  to  its  length. 
There  are  104  segments. 
Length  34  mm.,  width  less  than  2  mm. 
Legs  shorter  than  in  S.  pallipes,  the  1*  segment  being  only  about 
half  the  length  of  the  2*d. 
These  two  species  are  really  so  much  alike  that  I  am  perfectly 
prepared  for  fresh  specimens  to  show  that  the  differences  pointed  out 
are  merely  due  to  individual  variation.  But  at  present  there  is  no 
evidence  that  such  is  the  case  and  the  analogy  of  other  species  of 
the  group  lends  no  support  to  the  view. 
Siphonophora ,  Brandt. 
Bull.  Sc.  de  St.  Petersburg ,  I,  no.  23,  p.  179  (1837). 
Head  furnished  with  a  long  and  slender  rostrum. 
The  lateral  portions  of  the  tergites  not  keeled. 
33.  Siphonophora  flaviceps ,  sp.  n.  Pl.  XIX,  fig.  12. 
Java:  Tjibodas.  Many  specimens. 
Colour  brown  clouded  with  black  above;  head  1«*  tergite  and  a  few 
