﻿60 
  

  

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

  

  At 
  the 
  posterior 
  angle 
  of 
  the 
  8th 
  abdominal 
  segment 
  is 
  a 
  stout 
  seta 
  giving 
  off 
  

   a 
  number 
  of 
  branches 
  ; 
  it 
  is 
  about 
  one-quarter 
  the 
  length 
  of 
  the 
  paddle, 
  and 
  its 
  

   spread 
  of 
  branches 
  is 
  only 
  moderate. 
  

  

  At 
  the 
  posterior 
  angles 
  of 
  the 
  7th, 
  6th 
  and 
  5th 
  segments 
  are 
  long 
  spines, 
  curved 
  

   and 
  sharply 
  pointed 
  ; 
  on 
  the 
  4th 
  and 
  3rd 
  segments 
  the 
  corresponding 
  spines 
  are 
  

   short 
  and 
  blunter 
  ; 
  and 
  on 
  the 
  2nd 
  segment 
  very 
  small 
  and 
  feebly 
  chitinised. 
  

  

  In 
  addition 
  to 
  the 
  spines 
  already 
  described 
  there 
  are 
  numerous 
  hairs 
  on 
  the 
  

   body 
  of 
  the 
  pupa, 
  the 
  most 
  important 
  being 
  those 
  on 
  the 
  dorsal 
  aspect 
  at 
  the 
  

   posterior 
  margins 
  of 
  the 
  3rd 
  to 
  the 
  7th 
  segments 
  which 
  are 
  arranged 
  in 
  two 
  rows 
  

   on 
  each 
  side 
  of 
  the 
  abdomen. 
  The 
  hairs 
  of 
  the 
  one 
  row, 
  the 
  outer 
  lateral 
  row, 
  

   are 
  situated 
  a 
  little 
  internal 
  to 
  the 
  angle 
  ; 
  they 
  are 
  branched. 
  The 
  hairs 
  of 
  the 
  other 
  

   row, 
  the 
  inner 
  lateral 
  row, 
  are 
  situated 
  about 
  mid-way 
  between 
  the 
  posterior 
  

   angle 
  and 
  the 
  middle 
  line 
  ; 
  they 
  are 
  long 
  single 
  hairs 
  on 
  the 
  7th, 
  6th 
  and 
  5th 
  segments, 
  

   and 
  branched 
  hairs 
  similar 
  to 
  those 
  in 
  the 
  outer 
  lateral 
  row 
  on 
  the 
  4th 
  and 
  3rd 
  

   segments. 
  The 
  dendritic 
  hairs 
  on 
  the 
  1st 
  segment 
  are 
  well 
  developed. 
  

  

  Fig. 
  1 
  

  

  Pupa 
  of 
  Anopheles 
  pretoriensis, 
  Theo. 
  

  

  The 
  respiratory 
  trumpets 
  are 
  about 
  '4 
  mm. 
  long 
  ; 
  they 
  are, 
  as 
  usual, 
  composed 
  

   of 
  two 
  parts, 
  a 
  closed 
  part 
  or 
  meatus 
  which 
  is 
  proximal, 
  and 
  an 
  open 
  part 
  or 
  pinna 
  

   which 
  is 
  distal. 
  In 
  the 
  pupa 
  of 
  A. 
  pretoriensis 
  the 
  meatus 
  is 
  short 
  ; 
  the 
  ratio 
  of 
  its 
  

   length 
  to 
  the 
  total 
  length 
  of 
  the 
  trumpet 
  being 
  about 
  1 
  to 
  3. 
  The 
  pinna 
  as 
  it 
  

   expands 
  forms 
  a 
  slight 
  angle 
  a 
  little 
  beyond 
  the 
  distal 
  margin 
  of 
  the 
  meatus 
  ; 
  this 
  

   angle 
  is 
  much 
  less 
  acute 
  than 
  that 
  shown 
  by 
  A. 
  costalis. 
  

  

  Diagnosis. 
  — 
  The 
  pupa 
  of 
  A. 
  pretoriensis 
  has 
  to 
  be 
  separated 
  from 
  the 
  other 
  

   known 
  pupae 
  of 
  this 
  genus 
  which 
  have 
  long, 
  sharp 
  and 
  usually 
  curved 
  spines 
  at 
  

   the 
  posterior 
  angles 
  of 
  the 
  7th, 
  6th 
  and 
  5th 
  segments, 
  that 
  is, 
  from 
  those 
  of 
  

   A. 
  costalis, 
  A. 
  funestus, 
  A. 
  marshalli 
  and 
  A. 
  pharoensis. 
  A. 
  costalis 
  is 
  distinguished 
  

   by 
  having 
  on 
  the 
  paddle 
  a 
  well 
  developed 
  buttress 
  and 
  a 
  fringe 
  which 
  begins 
  at 
  

   a 
  point 
  proximal 
  to 
  the 
  middle 
  of 
  the 
  external 
  border, 
  and 
  by 
  the 
  characters 
  of 
  

   the 
  respiratory 
  trumpet 
  to 
  which 
  reference 
  has 
  already 
  been 
  made 
  ; 
  A. 
  funestus 
  

   by 
  having 
  a 
  spine 
  of 
  considerable 
  size 
  at 
  the 
  posterior 
  angle 
  of 
  the 
  4th 
  segment, 
  

   and 
  by 
  hairs 
  in 
  the 
  inner 
  lateral 
  row 
  on 
  the 
  7th, 
  6th 
  and 
  5th 
  segments, 
  which 
  are 
  

   often 
  sub-divided 
  ; 
  A. 
  marshalli 
  (if 
  the 
  specimen 
  examined 
  by 
  us 
  was 
  typical) 
  by 
  

  

  