335 
present  or  absent.  Antennae  composed  of  7  segments.  Mouth  more 
or  less  suctorial,  the  jaws  partially  or  almost  wholly  degenerate, 
labral  region  narrowed. 
Segments  with  free,  coalesced  or  membranous  pleurae.  Pedal  laminae 
always  free.  Repugnatorial  pores  present  and  beginning  on  the  5th 
segment. 
Legs  articulated  to  the  pedal  laminae,  composed  of  6  segments ,  upon 
the  basal  of  which  a  coxal  gland  (?)  opens. 
The  first  six  segments  furnished  with  8  pairs  of  legs  (?  i.  e.  the 
1st  and  2^  with  a  pair  each,  the  apodous,  the  4th,  5th  ana 
6th  with  two  pairs  each). 
The  last  two  segments  apodous.  The  copulatory  feet  of  the  re- 
latively simple  and  external. 
Family  SIPHONOPHORIDAE. 
Newport,  Tr.  Linn.  Soc.  XIX,  p.  278  (1845). 
Read  piriform,  subglobular  above,  produced  below  into  a  longer  or 
shorter  beak.  Eyes  absent. 
Antennae  large,  clavate,  the  6th  segment  the  thickest  and  longest, 
the  7th  minute  ;  situated  completely  at  the  sides  of  the  head ,  with  a 
wide  frontal  area  between  them, 
Mandibles  atrophied  (?);  Gnathochilarium  without  traces  of  its 
component  pieces,  composed  of  a  single  triangular  sclerite. 
Segments  composed  of  a  vaulted  tergite  which  bears  the  pores,  and 
a  distinct  free  pleura  on  each  side,  densely  hairy;  the  posterior  pore- 
bearing  half  of  the  tergite  elevated.  The  first  tergite  larger  than  the 
2**,  closely  embracing  the  sides  of  the  head,  its  pleurae  obsolete. 
Siphonorhinus  nov. 
Head  furnished  with  a  very  short  rostrum.  The  lateral  portions 
of  the  tergites  produced  into  tuberculiform  keels  which  bear  the  pores. 
Type  S.  pallipes  nov. 
This  genus  also  contains  in  all  probability  S.  picteti  of  Humbert 
(Mem.  Soc.  Phys.  Genève  XVIII,  p.  59,  pl.  V,  fig.  26)  from  Ceylon. 
31.  Siphonorhinus  pallipes ,  sp.  n.  Pl.  XX,  fig.  3 -3a. 
Java:  Buitenzorg;  several  specimens  (d*;  Ç). 
Colour  greyish-black  above,  often  with  a  dark  median  dorsal  line 
