﻿REPORT 
  OF 
  THE 
  STATE 
  ENTOMOLOGIST 
  327 
  

  

  animals 
  through 
  which 
  to 
  draw 
  their 
  juices, 
  as 
  in 
  the 
  Hemiptera 
  or 
  bugs. 
  

   These 
  parts 
  exist 
  in 
  all 
  insects, 
  although 
  at 
  times 
  some 
  of 
  them 
  may 
  be 
  

   but 
  rudimental. 
  The 
  mouth-parts 
  of 
  the 
  female 
  Culex 
  represent 
  all 
  of 
  

   these 
  typical 
  parts 
  of 
  different 
  insects, 
  and 
  in 
  the 
  formation 
  of 
  its 
  pro- 
  

   boscis, 
  two 
  other 
  organs 
  unite 
  (as 
  in 
  most 
  of 
  the 
  Diptera) 
  which 
  are 
  

   the 
  pharyngeal 
  sucking 
  organs, 
  named 
  the 
  epipharynx 
  and 
  the 
  

   phyopharynx. 
  

  

  It 
  therefore 
  appears 
  that 
  the 
  proboscis 
  of 
  the 
  mosquito, 
  which 
  in 
  its 
  

   normal 
  condition 
  seems 
  but 
  a 
  single 
  piece, 
  upon 
  dissection 
  or 
  close 
  

   examination 
  is 
  found 
  to 
  consist 
  of 
  seven 
  distinct 
  pieces 
  — 
  eight 
  pieces 
  in 
  

   reality, 
  but 
  two 
  so 
  combine 
  as 
  to 
  form 
  one. 
  Some 
  authors 
  have 
  stated 
  

   the 
  number 
  of 
  pieces 
  at 
  four, 
  five, 
  or 
  six, 
  but 
  there 
  certainly 
  are 
  as 
  many 
  

   as 
  seven 
  in 
  Cuhx 
  pipiens, 
  C. 
  ciliatus 
  and 
  C. 
  rufus 
  which 
  have 
  been 
  

   carefully 
  studied, 
  and 
  it 
  is 
  not 
  probable 
  that 
  the 
  number 
  will 
  be 
  found 
  

   to 
  differ 
  in 
  other 
  species 
  when 
  examined. 
  

  

  These 
  pieces 
  are 
  shown 
  in 
  the 
  accompanying 
  figure. 
  The 
  upper 
  piece, 
  

   pointed 
  and 
  gradually 
  tapering 
  from 
  the 
  base 
  to 
  the 
  apex, 
  is 
  the 
  labrum- 
  

  

  Fig. 
  9.— 
  Mouth 
  parts 
  of 
  the 
  mosquito, 
  lateral 
  aspect. 
  (After 
  Dimmock.) 
  

  

  epipharynx^ 
  made 
  up 
  by 
  the 
  close 
  union 
  of 
  the 
  labrum 
  and 
  the 
  epipharynx. 
  

   Below 
  it 
  is 
  the 
  hypopharynx, 
  a 
  linear, 
  lanceolate, 
  transparent 
  plate, 
  having 
  

   a 
  longitudinal 
  rod 
  (appearing 
  as 
  if 
  tubular 
  in 
  some 
  species) 
  traversing 
  it 
  

   in 
  the 
  middle, 
  through 
  which, 
  it 
  is 
  thought, 
  the 
  poisonous 
  fluid 
  which 
  we 
  

  

  