339 
Number  of  segments  up  to  51. 
Length  of  large  specimen  14  mm.,  width  1.5  mm. 
36.  •  Siphonotus  elegans  sp.  n. 
Java:  Tjibodas;  a  single  example. 
Colour  (in  alcohol),  terga  pale  above  and  irregularly  clowded  with 
purplish-brown,  which  laterally  passes  into  a  conspicuous  patch  of 
the  same  colour;  legs,  pleurae,  anal  somite  and  head  testaceous;  an- 
tennae pale  purplish. 
Head  conical  sparsely  hairy ,  with  two  large  eyes  ;  antennae  of  normal 
form ,  but  somewhat  short  appearing  to  be  about  as  long  as  the  head. 
Body  slender  nearly  smooth  evenly  convex  above,  flat  beneath;. the 
sulcus  which  separates  the  posterior  from  the  anterior  half  of  each 
tergite  distinctly  crenulate.  Pores  as  in  P.  formosum. 
Number  of  somites  38, 
Length  about  6  mm.,  width  5  mm. 
I  subjoin  the  description  of  the  following  species  of  Siphonotus. 
Siphonotus  hicksoni  sp.  n. 
Celebes:  2  examples  (S.  J.  Hickson). 
Colour  a  uniform  reddish  brown,  with  paler  head  and  legs,  and 
fuscous  antennae. 
Read  long,  about  as  long  as  the  antennae. 
Body  very  long  and  slender,  smooth  and  polished;  the  suture  be- 
tween the  halves  of  the  segments  crenulate;  the  penultimate  tergite 
larger  than  the  one  that  precedes  it. 
Legs  as  in  S.  formosus. 
Number  of  segments  90. 
Length  about  22  mm.,  width  1  mm. 
Sub-family  Siphonocryptini  nov. 
Body  shorter  and  very  wide. 
The  line  of  union  between  the  pleurae  and  the  terga  obliterated  or 
almost  obliterated  and  situated  on  the  under  surface  of  the  body  ;  the 
edge  of  the  body  formed  by  the  outgrowth  of  distinct  cariniform 
processes  which  bear  the  pores  upon  their  lateral  margins;  the  terga 
with  a  distinct  median  dorsal  suture. 
Head  and  anal  valves  covered  respectively  by  expansions  of  the 
1st  and  last  terga. 
Legs  long  and  separated  by  a  distinct  sternal  area. 
