﻿168 
  

  

  J. 
  W. 
  S. 
  MACFJE. 
  

  

  2. 
  — 
  A 
  series 
  of 
  setae, 
  the 
  postero-lateral 
  setae 
  (D), 
  situated 
  near 
  the 
  posterior 
  margins 
  

   of 
  the 
  segments 
  a 
  little 
  internal 
  to 
  the 
  posterior 
  angles. 
  

  

  3. 
  — 
  A 
  series 
  of 
  setae, 
  the 
  inner 
  ventral 
  setae 
  (B), 
  situated 
  near 
  the 
  posterior 
  margins 
  

   of 
  the 
  segments 
  at 
  points 
  about 
  half-way 
  between 
  the 
  middle 
  line 
  and 
  the 
  posterior 
  

   angles. 
  

  

  4. 
  — 
  A 
  series 
  of 
  setae, 
  the 
  outer 
  ventral 
  setae 
  (C), 
  situated 
  near 
  the 
  posterior 
  margins 
  

   of 
  the 
  segments 
  between 
  the 
  inner 
  ventral 
  setae 
  and 
  the 
  postero-lateral 
  setae. 
  

  

  5. 
  — 
  A 
  series 
  of 
  minute 
  setae, 
  the 
  anterior 
  ventro-central 
  setae 
  (A), 
  situated 
  close 
  to 
  

   the 
  anterior 
  margins 
  of 
  the 
  segments 
  and 
  very 
  near 
  the 
  middle 
  line 
  of 
  the 
  abdomen. 
  

   These 
  setae, 
  owing 
  to 
  their 
  size 
  and 
  position, 
  are 
  often 
  impossible 
  to 
  see. 
  

  

  The 
  ventral 
  abdominal 
  setae 
  may 
  now 
  be 
  described 
  as 
  they 
  occur 
  on 
  each 
  segment, 
  

   making 
  use 
  of 
  the 
  abbreviations, 
  E, 
  D, 
  C, 
  B, 
  and 
  A, 
  as 
  defined 
  above. 
  

  

  Segment 
  I. 
  

   No 
  setae. 
  

  

  Fig. 
  4. 
  Abdomen 
  of 
  pupa 
  of 
  Stegomyia 
  jasciaia, 
  

   ventral 
  view 
  ; 
  for 
  explanation 
  see 
  text. 
  

  

  Segment 
  II. 
  

  

  The 
  only 
  seta 
  detected 
  on 
  this 
  segment 
  is 
  a 
  delicate 
  single 
  seta 
  of 
  moderate 
  length 
  

   situated 
  in 
  a 
  position 
  corresponding 
  to 
  B. 
  This 
  seta 
  is 
  inconstant 
  ; 
  that 
  is 
  to 
  say, 
  

   in 
  some 
  pupae 
  it 
  was 
  absent, 
  and 
  no 
  socket 
  could 
  be 
  found 
  from 
  which 
  it 
  might 
  

   have 
  been 
  detached. 
  

  

  Segment 
  III. 
  

  

  E 
  — 
  small, 
  delicate 
  ; 
  usually 
  double 
  or 
  triple, 
  occasionally 
  single. 
  D 
  — 
  a 
  short 
  

   tuft 
  of 
  two 
  to 
  four 
  hairs, 
  sometimes 
  branched. 
  C 
  — 
  a 
  delicate 
  seta 
  of 
  moderate 
  

   length 
  ; 
  single. 
  B 
  — 
  a 
  small, 
  relatively 
  stout, 
  seta 
  ; 
  single. 
  A 
  — 
  a 
  minute 
  seta. 
  

  

  Segment 
  IV. 
  

  

  E 
  — 
  a 
  small 
  delicate 
  seta 
  ; 
  usually 
  double, 
  sometimes 
  single 
  or 
  triple. 
  D— 
  a 
  

   small 
  tuft 
  of 
  two 
  or 
  three 
  hairs, 
  sometimes 
  a 
  single 
  seta. 
  C 
  — 
  a 
  long 
  delicate 
  seta 
  ; 
  

   single. 
  B 
  — 
  a 
  short, 
  relatively 
  stout 
  seta 
  ; 
  single. 
  A 
  — 
  a 
  minute 
  seta. 
  

  

  Segment 
  V. 
  

  

  E 
  — 
  a 
  small 
  delicate 
  seta 
  ; 
  usually 
  double, 
  sometimes 
  single 
  or 
  triple. 
  D 
  — 
  a 
  

   small 
  tuft 
  of 
  two 
  to 
  four 
  hairs, 
  or 
  a 
  single 
  seta. 
  C 
  — 
  a 
  long 
  delicate 
  seta, 
  rather 
  

   longer 
  than 
  on 
  the 
  fourth 
  segment 
  ; 
  single. 
  B 
  — 
  a 
  short, 
  relatively 
  stout 
  seta 
  ; 
  

   single, 
  sometimes 
  forked 
  at 
  the 
  end. 
  A 
  — 
  a 
  minute 
  seta. 
  

  

  