﻿72 
  

  

  F. 
  W. 
  EDWARDS 
  — 
  NEW 
  SPECIES 
  OF 
  CULICIDAE 
  IN 
  THE 
  BRITISH 
  MUSEUM, 
  

  

  The 
  hypopygium 
  (fig. 
  11) 
  is 
  readily 
  distinguishable 
  from 
  that 
  of 
  C. 
  invidiosus 
  as 
  

   follows 
  : 
  the 
  clasper 
  has 
  a 
  rounded 
  prominence 
  near 
  its 
  tip 
  ; 
  the 
  second 
  division 
  

   of 
  the 
  harpagones 
  is 
  rudimentary, 
  being 
  represented 
  by 
  a 
  mere 
  knob, 
  and 
  the 
  first 
  

   division 
  bears 
  dorsally 
  a 
  strongly 
  chitinised 
  plate 
  which 
  is 
  found 
  only 
  in 
  this 
  species 
  

   and 
  in 
  C. 
  laurenti. 
  

  

  Nyasaland 
  : 
  52 
  <J 
  (including 
  type) 
  62 
  $, 
  Port 
  Herald, 
  2. 
  iv. 
  1913, 
  " 
  invaded 
  

   house 
  " 
  (Dr. 
  J. 
  E. 
  S. 
  Old) 
  ; 
  1 
  $, 
  Fort 
  Johnston, 
  xii. 
  1912 
  (Dr. 
  R. 
  Bury) 
  ; 
  3 
  <J, 
  

   Mlanje, 
  i. 
  1913 
  (S. 
  A. 
  Neave) 
  ; 
  2(J 
  1 
  $, 
  Fort 
  Maguire, 
  16. 
  iii. 
  1910 
  (Dr. 
  A. 
  H. 
  Barclay). 
  

   British 
  East 
  Africa 
  : 
  1 
  <J 
  12, 
  Kabete, 
  xi. 
  1913 
  (T. 
  J. 
  Anderson). 
  Northern 
  

   Nigeria 
  : 
  1 
  $, 
  Zungeru, 
  13. 
  iii. 
  1911 
  (Dr. 
  J. 
  W. 
  Scott 
  Macfie). 
  

  

  Culex 
  perfidiosus, 
  sp. 
  nov. 
  

  

  Resembles 
  C. 
  invidiosus 
  so 
  closely 
  that 
  no 
  external 
  distinguishing 
  characters 
  can 
  be 
  

   pointed 
  out. 
  The 
  hypopygium 
  however 
  is 
  utterly 
  different 
  (cf. 
  figs. 
  9 
  and 
  12), 
  

   particularly 
  in 
  the 
  form 
  of 
  the 
  ninth 
  tergite 
  and 
  the 
  structure 
  of 
  the 
  side-pieces 
  and 
  

  

  Fig. 
  12. 
  — 
  Culex 
  perfidiosus, 
  sp. 
  n. 
  

  

  Basal 
  parts 
  of 
  hypopygium 
  greatly 
  enlarged, 
  from 
  above 
  ; 
  the 
  whole 
  organ 
  

   less 
  highly 
  magnified, 
  from 
  beneath 
  ; 
  a 
  detached 
  clasper 
  in 
  side 
  view 
  ; 
  9t, 
  

   the 
  abnormally 
  developed 
  ninth 
  tergite. 
  

  

  claspers. 
  The 
  ninth 
  tergite 
  is 
  about 
  three 
  times 
  as 
  long 
  as 
  in 
  any 
  other 
  species 
  

   which 
  I 
  have 
  examined, 
  and 
  the 
  lateral 
  processes 
  of 
  the 
  side-pieces 
  are 
  very 
  peculiar. 
  

   The 
  basal 
  parts 
  of 
  the 
  hypopygium 
  much 
  resemble 
  those 
  of 
  C. 
  invidiosus, 
  but, 
  as 
  in 
  

   C. 
  perfuscus, 
  the 
  second 
  division 
  of 
  the 
  harpagones 
  is 
  rudimentary. 
  

  

  