﻿86 
  

  

  F. 
  W. 
  EDWARDS. 
  

  

  Culex 
  trifoliatus, 
  Edw. 
  

  

  This 
  species 
  can 
  be 
  distinguished 
  from 
  most 
  of 
  its 
  allies 
  by 
  having 
  the 
  tip 
  of 
  the 
  

   hind 
  femora 
  more 
  broadly 
  dark, 
  the 
  apical 
  sixth 
  being 
  dark 
  all 
  round. 
  

  

  A 
  good 
  series 
  has 
  been 
  received 
  from 
  the 
  southern 
  Sudan 
  ( 
  H. 
  H. 
  King 
  ; 
  various 
  

   localities) 
  and 
  I 
  have 
  also 
  seen 
  the 
  species 
  from 
  the 
  Congo. 
  

  

  Culex 
  rima, 
  Theo. 
  

  

  This 
  species 
  may 
  be 
  very 
  readily 
  distinguished 
  by 
  the 
  pleural 
  markings. 
  The 
  

   ground-colour 
  of 
  the 
  pleurae 
  is 
  pale 
  ; 
  a 
  broad 
  blackish 
  stripe 
  adjoins 
  the 
  margin 
  

   of 
  the 
  mesonotum, 
  and 
  there 
  is 
  another 
  but 
  much 
  narrower 
  dark 
  stripe 
  some 
  way 
  

   below 
  and 
  parallel 
  with 
  the 
  upper 
  one. 
  These 
  markings 
  vary 
  somewhat 
  in 
  intensity, 
  

   and 
  in 
  immature 
  specimens 
  are 
  faint, 
  but 
  are 
  always 
  traceable. 
  Apart 
  from 
  this, 
  the 
  

   female 
  may 
  be 
  known 
  by 
  its 
  palpi, 
  which 
  are 
  very 
  much 
  longer 
  than 
  in 
  the 
  other 
  three 
  

   species 
  of 
  the 
  group, 
  and 
  about 
  three 
  times 
  as 
  long 
  as 
  the 
  clypeus, 
  the 
  last 
  segment 
  

   being 
  longer 
  than 
  the 
  basal 
  segments 
  together. 
  

  

  Fig. 
  3. 
  Ethiopian 
  species 
  of 
  Culex; 
  upper 
  row, 
  anal 
  and 
  genital 
  parts, 
  from 
  above 
  ; 
  

  

  lower 
  row, 
  clasper 
  and 
  apex 
  of'side-piece, 
  from 
  the 
  side 
  : 
  (5) 
  C. 
  saHsbunensis, 
  Thco. 
  ; 
  

  

  (r) 
  C. 
  rima, 
  Theo., 
  specimen 
  from 
  the 
  Sudan 
  ; 
  (c) 
  C. 
  rima, 
  specimen 
  from 
  Old 
  Calabar 
  ; 
  

  

  (k) 
  C. 
  hingianus, 
  sp. 
  n. 
  ; 
  all 
  x 
  180. 
  

  

  In 
  the 
  hypopygium, 
  the 
  most 
  noteworthy 
  points 
  are 
  the 
  membranous 
  subapical 
  

   expansion 
  of 
  the 
  tenth 
  sternites, 
  and 
  the 
  long 
  slender 
  clasper. 
  The 
  lobe 
  of 
  the 
  side- 
  

   piece 
  bears 
  three 
  long 
  flat 
  plates 
  (in 
  place 
  of 
  the 
  usual 
  rods), 
  three 
  short 
  and 
  more 
  

   or 
  less 
  flattened 
  bristles, 
  and 
  a 
  large 
  round-tipped 
  leaf. 
  The 
  three 
  plates 
  vary 
  rather 
  

   considerably 
  in 
  shape 
  in 
  specimens 
  from 
  different 
  localities. 
  

  

  There 
  are 
  no 
  mesepimeral 
  scales, 
  and 
  the 
  lower 
  mesepimeral 
  bristle 
  is 
  distinct. 
  

  

  Culex 
  kingianus, 
  sp. 
  n. 
  

  

  <$. 
  Head 
  with 
  narrow 
  white 
  scales 
  dorsally, 
  flat 
  white 
  ones 
  at 
  the 
  sides, 
  extending 
  

   upwards 
  as 
  a 
  narrow 
  border 
  to 
  the 
  eyes 
  almost 
  to 
  the 
  vertex. 
  Upright 
  scales 
  dark 
  

  

  