MR.  J.  O.  WESTWOOD  ON  NYCTERIBIA, 
293 
Plate  XXXVI. 
Nycteribia  Sykesii  ?. 
Fig.  1.  The  insect,  of  the  natural  size,  seen  from  above,  with  the  head  extended. 
2.  The  same,  seen  sideways,  with  the  head  thrown  back  in  the  ordinary  position. 
3.  The  same,  highly  magnified,  seen  from  above. 
4.  The  head,  seen  from  above,  exhibiting  the  spiculate  style  of  the  lower  parts 
of  the  mouth. 
5.  The  same,  seen  from  beneath. 
6.  The  same,  seen  sideways. 
7.  The  double  eye  on  one  side  of  the  head. 
8.  One  of  the  antemuE. 
9.  The  lower  apparatus  of  the  mouth,  armed  at  the  sides  with  several  long  and 
slender  hairs. 
10.  One  of  the  palpi?  seen  sideways. 
1  ] .  The  palpi  ?  attached  by  membrane,  seen  after  the  removal  of  the  lower  appa- 
ratus of  the  mouth. 
12.  The  base  of  the  intermediate  leg,  showing  the  connexion  with  the  pectines. 
13.  One  of  the  ^ec^mes  detached. 
14.  The  terminal  joints  of  the  foot. 
1.5.  The  spiracular  aperture  on  each  side  of  the  neck. 
16.  The  under  side  of  the  body,  the  base  of  the  legs  on  one  side  only  being  repre- 
sented. 
17.  The  abdomen  of  one  of  the  individuals,  seen  from  above. 
18.  The  upper  side  of  the  aidomen  in  an  advanced  stage  of  gestation. 
19.  The  under  side  of  the  same. 
20.  The  extremity  of  the  abdomen  seen  from  behind,  showing  the  anal  apparatus 
and  the  two  posterior  pairs  of  spiracles. 
21.  A  portion  of  the  skin  of  the  abdomen  more  highly  magnified,  showing  one  of 
the  third  pair  of  spiracles. 
22.  The^M^a,  extracted  from  the  abdomen  represented  in  fig.  18.,  seen  sideways. 
23.  The  same,  exhibiting  its  flattened  under  side. 
24.  The  same,  showing  its  convex  upper  side. 
25.  The  broad  extremity  of  the  same,  seen  from  behind. 
Nycteribia  Hopei 
26.  The  insect,  seen  from  above,  highly  magnified. 
27.  The  under  side  of  the  thorax  and  abdomen. 
28.  The  extremity  of  the  abdomen,  seen  sideways. 
2  Q  2 
