﻿64 
  F. 
  W. 
  EDWARDS 
  — 
  NEW 
  SPECIES 
  OF 
  CULICIDAE 
  IN 
  THE 
  BRITISH 
  MUSEUM 
  

  

  organs, 
  the 
  unci, 
  harpagones 
  and 
  harpes. 
  The 
  unci 
  (fig. 
  1, 
  a) 
  are 
  the 
  most 
  dorsally 
  

  

  Fig. 
  1. 
  — 
  Gulex 
  trifilatus, 
  sp. 
  n. 
  

  

  Basal 
  parts 
  of 
  hypopygium 
  from 
  above, 
  highly 
  magnified 
  ; 
  right 
  side-piece 
  of 
  hypopy- 
  

   gium, 
  inner 
  side 
  view, 
  enlargement 
  about 
  half 
  that 
  of 
  the 
  basal 
  parts 
  ; 
  a, 
  unci 
  ; 
  &, 
  first, 
  

   b 
  1 
  , 
  supplementary 
  and 
  c, 
  second 
  divisions 
  of 
  the 
  harpagones 
  ; 
  d, 
  harpes, 
  with 
  crowns 
  of 
  

   spines 
  ; 
  e, 
  basal 
  projection 
  of 
  the 
  harpes. 
  

  

  situated 
  ; 
  they 
  have 
  practically 
  the 
  same 
  form 
  throughout 
  the 
  genus, 
  and 
  are 
  usually 
  

   very 
  strongly 
  chitinised. 
  These 
  plates 
  are 
  regarded 
  by 
  Dyar 
  and 
  Knab 
  as 
  representing 
  

   a 
  division 
  of 
  the 
  harpagones, 
  but 
  I 
  believe 
  this 
  view 
  to 
  be 
  incorrect, 
  and 
  prefer 
  to 
  

   consider 
  them 
  as 
  strictly 
  homologous 
  with 
  the 
  unci 
  of 
  other 
  Culicidae. 
  The 
  harpagones 
  

   in 
  the 
  simplest 
  forms 
  of 
  the 
  Culex 
  group 
  (Culiciomyia, 
  etc.) 
  are 
  represented 
  by 
  a 
  single 
  

   pair 
  of 
  undivided 
  plates, 
  but 
  in 
  all 
  the 
  forms 
  here 
  considered 
  they 
  have 
  a 
  more 
  com- 
  

   plex 
  structure, 
  consisting 
  of 
  at 
  least 
  two 
  definite 
  divisions, 
  the 
  first 
  one 
  often 
  

   elaborately 
  split 
  up, 
  the 
  second 
  one 
  usually 
  taking 
  the 
  form 
  of 
  a 
  long 
  straight 
  rod 
  

   just 
  above 
  the 
  harpes. 
  In 
  some 
  species 
  (as 
  C. 
  pijriens, 
  C. 
  fatigans, 
  C. 
  trifilatus) 
  the 
  

   first 
  division 
  of 
  the 
  harpagones 
  is 
  clearly 
  divided 
  into 
  two 
  portions, 
  in 
  which 
  case 
  the 
  

   lower 
  part 
  is 
  here 
  spoken 
  of 
  as 
  the 
  supplementary 
  division 
  (fig. 
  1, 
  b 
  1 
  ). 
  The 
  harpes 
  

   are 
  provided 
  with 
  a 
  dense 
  crown 
  of 
  spines, 
  and 
  normally 
  they 
  have 
  a 
  long 
  finger-like 
  

   projection 
  at 
  their 
  base. 
  

  

  