﻿NEW 
  AND 
  LITTLE-KNOWN 
  EAST 
  AFRICAN 
  CULCIDAE. 
  

  

  277 
  

  

  species 
  and 
  0. 
  dentatus 
  difier 
  markedly 
  in 
  the 
  male 
  genitalia 
  has 
  already 
  been 
  

   referred 
  to, 
  and 
  the 
  present 
  opportunity 
  is 
  taken 
  of 
  figuring 
  this 
  difference 
  (figs. 
  l,a,b). 
  

   There 
  are 
  other 
  well-marked 
  genital 
  distinctions 
  between 
  0. 
  quasiunivittatus 
  and 
  

   0. 
  dentatus 
  besides 
  those 
  in 
  the 
  claspers, 
  but 
  as 
  the 
  latter 
  are 
  most 
  readily 
  seen 
  

   (being 
  usually 
  visible 
  even 
  in 
  a 
  dried 
  specimen), 
  they 
  alone 
  have 
  been 
  figured. 
  

  

  Fig. 
  1. 
  Male 
  claspers 
  of 
  : 
  — 
  (a) 
  Ochlerotatus 
  quasiunivittatus, 
  Theo. 
  ; 
  (b) 
  0. 
  dentatus, 
  

   Theo. 
  ; 
  (c) 
  O. 
  albocephalus, 
  Theo. 
  ; 
  (d) 
  0. 
  nigeriensis, 
  Theo. 
  ; 
  (e) 
  O. 
  hirsutus, 
  Theo. 
  

  

  0. 
  dtntatus, 
  Theo. 
  

  

  This 
  species 
  also 
  apparently 
  occurs 
  at 
  Durban 
  together 
  with 
  0. 
  albocephalus 
  and 
  

   O. 
  quasiunivittatus, 
  though 
  only 
  female 
  specimens 
  have 
  been 
  received. 
  It 
  seems 
  

   to 
  differ 
  from 
  the 
  other 
  two 
  in 
  the 
  thorax 
  being 
  darker, 
  the 
  pale 
  scales 
  having 
  a 
  

   tendency 
  to 
  a 
  linear 
  arrangement, 
  and 
  in 
  the 
  very 
  small 
  pale 
  spot 
  at 
  the 
  tip 
  of 
  the 
  

   hind 
  tibiae, 
  which 
  is 
  never 
  more 
  than 
  about 
  half 
  as 
  long 
  as 
  broad. 
  The 
  best 
  specific 
  

   character 
  is, 
  however, 
  the 
  structure 
  of 
  the 
  male 
  genitalia 
  (fig. 
  1,6). 
  The 
  species 
  has 
  

   been 
  received 
  from 
  various 
  localities 
  in 
  British 
  East 
  Africa. 
  

  

  O. 
  pembaensis, 
  Theo. 
  

  

  Aedes 
  pembaensis, 
  Theo., 
  Mon. 
  Cul. 
  ii, 
  p. 
  235 
  (1901). 
  

   Skusea 
  pembaensis, 
  Theo., 
  Mon. 
  Cul. 
  iii, 
  p. 
  291 
  (1903).- 
  • 
  

   Verrallina 
  ? 
  pembaensis, 
  Theo., 
  Mon. 
  Cul. 
  v, 
  p. 
  495 
  (1910). 
  

   Howardina 
  ? 
  pembaensis, 
  Edw., 
  Bull. 
  Ent. 
  Res. 
  iii, 
  p. 
  13 
  (1912). 
  

   Aedes 
  (Skusea) 
  pembaensis, 
  Edw., 
  Bull. 
  Ent. 
  Res. 
  iv, 
  p. 
  49 
  (1913). 
  

  

  As 
  indicated 
  above, 
  this 
  species 
  has 
  undergone 
  many 
  nomenclatorial 
  vicissitudes, 
  

   and 
  it 
  is 
  not 
  certain 
  that 
  it 
  has 
  even 
  yet 
  found 
  a 
  final 
  resting-place, 
  as 
  it 
  is 
  one 
  of 
  

   those 
  intermediate 
  forms 
  which 
  make 
  the 
  classification 
  of 
  the 
  Aedes 
  group 
  so 
  difficult. 
  

   Specimens 
  representing 
  both 
  sexes 
  have 
  lately 
  been 
  sent 
  in 
  by 
  Dr. 
  W. 
  M. 
  Aders 
  

   from 
  Zanzibar, 
  where 
  the 
  larvae 
  were 
  found 
  living 
  in 
  stagnant 
  water, 
  31. 
  iii. 
  1914. 
  

   The 
  male 
  palpi 
  are 
  as 
  long 
  as 
  the 
  proboscis, 
  and 
  though 
  the 
  last 
  two 
  joints 
  are 
  

   scarcely 
  swollen, 
  they 
  are 
  hairy 
  and 
  bent 
  downwards 
  as 
  usual 
  in 
  Ochlerotatus, 
  so 
  

   that 
  in 
  spite 
  of 
  the 
  simple 
  claws 
  of 
  the 
  female 
  the 
  species 
  is 
  probably 
  better 
  placed 
  

  

  