﻿MOSQUITO 
  NOTES. 
  

  

  135 
  

  

  points 
  out, 
  the 
  wing 
  scales 
  are 
  decidedly 
  narrower 
  than 
  in 
  G. 
  bitaeniorhynchus, 
  a 
  

   difference 
  which, 
  together 
  with 
  a 
  slight 
  distinction 
  in 
  the 
  male 
  genitalia, 
  will 
  probably 
  

   suffice 
  to 
  distinguish 
  the 
  two 
  forms 
  specifically. 
  

  

  The 
  genitalia 
  are 
  rather 
  peculiar 
  (fig. 
  1). 
  The 
  apical 
  lobe 
  of 
  the 
  side-pieces 
  has 
  the 
  

   flat 
  plate 
  much 
  reduced, 
  little 
  more 
  than 
  a 
  flattened 
  bristle 
  ; 
  in 
  addition 
  there 
  are 
  

   four 
  or 
  five 
  undifferentiated 
  bristles 
  and 
  two 
  stout 
  spines. 
  The 
  harpes 
  have 
  only 
  a 
  

   minute 
  basal 
  appendage. 
  The 
  " 
  harpagones 
  " 
  are 
  divided 
  into 
  two 
  pairs 
  of 
  strong 
  

  

  Fig. 
  1. 
  Male 
  genitalia 
  of 
  Gulex 
  aurantapex, 
  Edw. 
  ; 
  a, 
  apex 
  of 
  side 
  pieces 
  ; 
  

   b, 
  harpes 
  and 
  harpagones, 
  side 
  view 
  ; 
  c, 
  the 
  ame, 
  dorsal 
  view 
  (one 
  side 
  

  

  only). 
  

  

  sickle-shaped 
  plates 
  directed 
  dorsally, 
  the 
  ventral 
  pair 
  is 
  the 
  longer, 
  and 
  gives 
  off 
  

   ventrally 
  from 
  its 
  base 
  an 
  appendage 
  which 
  divides 
  into 
  a 
  rounded 
  knob 
  and 
  two 
  

   strong 
  teeth. 
  In 
  the 
  typical 
  G. 
  bitaeniorhynchus 
  of 
  the 
  Oriental 
  region, 
  as 
  well 
  as 
  

   in 
  the 
  var. 
  ethiopicus, 
  Edw., 
  this 
  ventral 
  appendage 
  of 
  the 
  second 
  harpagonal 
  plate 
  

   is 
  much 
  reduced 
  and 
  differently 
  formed. 
  

  

  The 
  var. 
  ethiopicus 
  differs 
  from 
  the 
  typical 
  bitaeniorhynchus 
  chiefly 
  in 
  having 
  

   the 
  upper 
  (or 
  basal) 
  sickle-shaped 
  plate 
  of 
  the 
  harpagones 
  much 
  broader 
  than 
  the 
  

   lower 
  (or 
  apical). 
  The 
  other 
  points 
  of 
  distinction 
  given 
  (Bull. 
  Ent. 
  Res. 
  iii, 
  p. 
  30, 
  

   1912) 
  do 
  not 
  hold 
  good. 
  Specimens 
  of 
  this 
  form 
  were 
  also 
  reared 
  by 
  Mr. 
  Pomeroy 
  

   at 
  Dar-es-Salaam. 
  The 
  larvae 
  seem 
  to 
  be 
  indistinguishable. 
  

  

  Culex 
  watti, 
  sp. 
  nov. 
  

  

  (J. 
  Head 
  scales 
  mostly 
  whitish. 
  Palpi 
  longer 
  than 
  the 
  proboscis 
  by 
  nearly 
  the 
  

   length 
  of 
  the 
  last 
  two 
  joints, 
  which 
  are 
  densely 
  hairy. 
  Long 
  joint 
  with 
  a 
  narrow 
  

   whitish 
  ring 
  before 
  the 
  middle, 
  and 
  another 
  broader 
  one 
  in 
  the 
  middle 
  of 
  the 
  apical 
  

   half. 
  Last 
  two 
  joints 
  with 
  narrow 
  pale 
  basal 
  rings, 
  creamy 
  above, 
  white 
  below 
  ; 
  

   hairs 
  at 
  tip 
  of 
  last 
  joint 
  also 
  pale 
  ; 
  penultimate 
  joint 
  with 
  a 
  short 
  white 
  streak 
  on 
  

   underside 
  just 
  beyond 
  middle. 
  Proboscis 
  brown, 
  with 
  a 
  narrow, 
  distinct 
  though 
  not 
  

   sharply 
  margined 
  pale 
  ring 
  beyond 
  the 
  middle. 
  Thorax 
  brown-scaled, 
  without 
  

   special 
  ornamentation, 
  except 
  that 
  the 
  scales 
  on 
  and 
  in 
  front 
  of 
  the 
  scutellum 
  and 
  

   in 
  front 
  of 
  the 
  wing-bases 
  are 
  paler. 
  Abdomen 
  dark 
  brown, 
  the 
  segments 
  with 
  dull 
  

   whitish 
  basal 
  bands 
  of 
  about 
  even 
  width, 
  those 
  on 
  segments 
  6 
  and 
  7 
  considerably 
  

   expanded 
  laterally. 
  Genitalia 
  (four 
  specimens 
  mounted) 
  : 
  side-pieces 
  normal, 
  

   rather 
  closely 
  resembling 
  those 
  of 
  C. 
  trifilatus, 
  Edw. 
  (Bull. 
  Ent. 
  Res. 
  v, 
  p. 
  64), 
  

   but 
  the 
  clasper 
  is 
  a 
  little 
  more 
  narrowed 
  apically, 
  and 
  on 
  the 
  lobe 
  the 
  modified 
  

   bristles 
  in 
  each 
  set 
  of 
  three 
  (anterior 
  to 
  the 
  plate) 
  are 
  of 
  about 
  equal 
  length 
  ; 
  the 
  

   one 
  adjoining 
  the 
  plate 
  has 
  a 
  more 
  flattened 
  tip. 
  Unci 
  distinct, 
  pointed. 
  Harpagones 
  

  

  