﻿426 
  

  

  J. 
  W. 
  S. 
  MACFIE 
  AND 
  A. 
  INGRAM. 
  

  

  Cephalothorax. 
  The 
  respiratory 
  trumpets 
  (fig. 
  14, 
  a) 
  are 
  short, 
  narrowed 
  both 
  

   apically 
  and 
  basally, 
  slightly 
  infuscated 
  basally, 
  and 
  with 
  narrow 
  apertures 
  ; 
  length 
  

   about 
  0-5 
  mm., 
  middle 
  breadth 
  about 
  120,w, 
  ration 
  of 
  the 
  length 
  of 
  the 
  meatus 
  to 
  

   the 
  total 
  length 
  about 
  1 
  to 
  1 
  -26. 
  

  

  Abdomen. 
  The 
  paddles 
  (fig. 
  14, 
  b) 
  are 
  oval 
  and 
  small 
  ; 
  length 
  about 
  0-6 
  mm., 
  

   greatest 
  breadth 
  about 
  0-4 
  mm., 
  only 
  slightly 
  more 
  than 
  half 
  the 
  breadth 
  of 
  the 
  

   eighth 
  abdominal 
  segment. 
  The 
  external 
  buttress 
  is 
  practically 
  absent. 
  The 
  midrib 
  

   is 
  feebly 
  developed 
  and 
  divides 
  the 
  paddle 
  into 
  two 
  approximately 
  equal 
  halves. 
  

   There 
  is 
  no 
  fringe, 
  but 
  the 
  posterior 
  and 
  external 
  borders 
  of 
  the 
  paddles 
  bear 
  a 
  few 
  

   small 
  denticulations. 
  The 
  distal 
  hair 
  was 
  unfortunately 
  missing 
  from 
  both 
  the 
  

   paddles, 
  but 
  there 
  appeared 
  to 
  be 
  a 
  socket 
  for 
  a 
  large 
  seta 
  on 
  the 
  outer 
  side 
  of 
  each 
  

   midrib. 
  

  

  Fig. 
  14. 
  Pupa 
  of 
  Aedes 
  furcifer, 
  Edw. 
  : 
  a, 
  trumpet 
  ; 
  b, 
  paddles 
  ; 
  c, 
  dendritic 
  tufts 
  

  

  on 
  first 
  abdominal 
  segment. 
  

  

  The 
  lateral 
  setae 
  on 
  segment 
  viii 
  are 
  tufts 
  of 
  about 
  four 
  stout, 
  subplumose 
  hairs, 
  

   which 
  are 
  long, 
  the 
  longest 
  reaching 
  not 
  far 
  short 
  of 
  the 
  posterior 
  extremities 
  of 
  the 
  

   paddles 
  ; 
  on 
  segment 
  vii 
  small 
  tufts 
  of 
  two 
  stout, 
  pubescent 
  hairs 
  ; 
  on 
  segment 
  vi 
  

   missing, 
  but 
  provided 
  with 
  large 
  sockets 
  ; 
  and 
  on 
  segments 
  v 
  to 
  iii 
  delicate, 
  simple, 
  

   single 
  hairs. 
  The 
  sublateral 
  and 
  submedian 
  dorsal 
  setae 
  apparently 
  are 
  situated 
  

   unusually 
  near 
  the 
  middle 
  line 
  on 
  the 
  more 
  anterior 
  segments. 
  The 
  sublateral 
  setae 
  

   on 
  segments 
  vi 
  and 
  vii 
  are 
  short 
  single 
  hairs, 
  and 
  on 
  segments 
  iii 
  to 
  v 
  long 
  stout 
  hairs 
  

   reaching 
  beyond 
  the 
  posterior 
  margins 
  of 
  the 
  following 
  segments. 
  The 
  submedian 
  

   setae 
  on 
  segment 
  vii 
  are 
  small 
  single 
  hairs 
  (on 
  one 
  side 
  the 
  hair 
  is 
  divided 
  at 
  its 
  tip), 
  

   on 
  segments 
  v 
  and 
  vi 
  small 
  double 
  hairs, 
  and 
  on 
  segments 
  ii 
  to 
  iv 
  larger 
  triple 
  hairs. 
  

   The 
  large 
  tufts 
  (fig. 
  14, 
  c) 
  on 
  segment 
  i 
  are 
  of 
  an 
  unusual 
  form, 
  being 
  stout, 
  branched 
  

   setae 
  with 
  a 
  median 
  stem 
  giving 
  off 
  about 
  fifteen 
  subplumose 
  hairs. 
  

  

  Diagnosis. 
  — 
  This 
  pupa 
  differs 
  in 
  some 
  respects 
  very 
  notably 
  from 
  the 
  other 
  

   known 
  pupae 
  of 
  West 
  African 
  species 
  of 
  Aedes 
  (Ochlerotatus), 
  for 
  example, 
  in 
  the 
  

   forms 
  of 
  the 
  respiratory 
  trumpets, 
  the 
  paddles, 
  and 
  the 
  large 
  tufts 
  on 
  the 
  first 
  

   abdominal 
  segment. 
  Moreover, 
  the 
  smaller 
  tufts 
  on 
  the 
  second 
  segment 
  are 
  absent, 
  

   being 
  replaced 
  by 
  triple 
  (or 
  quadruple) 
  hairs, 
  and 
  in 
  this 
  respect, 
  as 
  well 
  as 
  in 
  others, 
  

   the 
  pupa 
  more 
  closely 
  resembles 
  that 
  of 
  Aedes 
  (Stegomyia). 
  

  

  Habitat. 
  — 
  Accra, 
  15.vii.1921 
  ; 
  one 
  female 
  reared 
  from 
  a 
  pupa 
  obtained 
  from 
  water 
  

   in 
  a 
  rot-hole 
  in 
  a 
  flamboyant 
  tree 
  (Poinciana 
  regia) 
  in 
  the 
  compound 
  of 
  a 
  bungalow. 
  

  

  