﻿172 
  EEPORT 
  UNITED 
  STATES 
  ENTOMOLOGICAL 
  COMMISSION. 
  

  

  overlapped 
  by 
  the 
  upper 
  lip. 
  The 
  accessory 
  jaws 
  (maxillae, 
  Fig. 
  3) 
  are 
  

   divided, 
  as 
  in 
  the 
  grasshopper 
  and 
  other 
  Orthopterous 
  insects, 
  into 
  three 
  

   lobes 
  ; 
  of 
  these 
  the 
  inner, 
  called 
  the 
  lacinia, 
  is 
  sinuous, 
  narrow, 
  horny, 
  

   and 
  ends 
  in 
  three 
  long 
  teeth; 
  the 
  middle 
  lobe 
  (galea) 
  is 
  a 
  little 
  longer 
  

  

  than 
  the 
  inner, 
  is 
  membranous, 
  while 
  the 
  third 
  

   division 
  forms 
  a 
  five-jointed 
  palpus, 
  the 
  fifth 
  

   joint 
  the 
  longest 
  and 
  truncated 
  or 
  docked 
  at 
  

   the 
  end. 
  

  

  Coming 
  now 
  to 
  the 
  under 
  lip, 
  or 
  labium, 
  

  

  we 
  find 
  that 
  its 
  base, 
  called 
  the 
  submeiitum, 
  

  

  j§ 
  H> 
  is 
  a 
  little 
  longer 
  than 
  broad 
  ; 
  the 
  sides 
  being 
  

  

  % 
  g 
  slightly 
  upturned, 
  sinuous, 
  and 
  contracted 
  

  

  *- 
  °* 
  near 
  the 
  base, 
  while 
  the 
  front 
  edge 
  is 
  hollowed 
  

  

  i» 
  out 
  to 
  receive 
  the 
  mentum, 
  which 
  is 
  a 
  square 
  

  

  I 
  g 
  piece. 
  From 
  under 
  each 
  corner 
  of 
  the 
  front 
  

   * 
  g 
  edge 
  arise 
  the 
  labial 
  palpi 
  (Fig. 
  3) 
  which 
  are 
  

   | 
  ri 
  three-jointed. 
  From 
  the 
  under 
  side 
  of 
  the 
  

  

  I 
  I 
  labium 
  (i. 
  e., 
  the 
  front 
  piece 
  or 
  mentum) 
  arises 
  

   |.| 
  the 
  ligulce 
  (these 
  co-originating 
  with 
  the 
  palpi), 
  

   £ 
  I 
  which 
  consists 
  of 
  two 
  lateral, 
  squarish, 
  mem- 
  

   | 
  ^ 
  branous 
  outer 
  lobes, 
  and 
  two 
  acutely 
  conical 
  

   1 
  1 
  inner 
  lobes. 
  The 
  lingua 
  or 
  tongue 
  is 
  situated 
  

   I 
  j§ 
  above 
  the 
  ligula, 
  and 
  is 
  a 
  three-angled 
  (tri- 
  

  

  .a 
  quetate) 
  organ, 
  partly 
  chitinons, 
  with 
  a 
  high 
  

   § 
  J? 
  median 
  ridge 
  ; 
  it 
  fills 
  the 
  space 
  between 
  the 
  

   ■ 
  | 
  maxillae 
  and 
  jaws, 
  and 
  partly 
  closes 
  the 
  

  

  1 
  | 
  mouth-opening, 
  which 
  lies 
  directly 
  under 
  the 
  

   g 
  labrum 
  or 
  upper 
  lip 
  and 
  between 
  the 
  jaws 
  

   | 
  (mandibles.) 
  

   | 
  Thorax. 
  — 
  This 
  region 
  is 
  peculiar 
  from 
  the 
  

  

  fact 
  that 
  the 
  wings 
  are 
  but 
  partially 
  devel- 
  

   oped. 
  As 
  in 
  all 
  insects 
  it 
  consists 
  of 
  three 
  

   segments 
  or 
  rings 
  variously 
  modified, 
  and 
  

   each 
  consisting 
  of 
  a 
  number 
  of 
  pieces. 
  The 
  

   first 
  ring, 
  called 
  the 
  prothorax, 
  is 
  very 
  large 
  

   above, 
  the 
  dorsal 
  part 
  (tergum) 
  forming 
  a 
  

   large 
  shield-like 
  plate, 
  which 
  is 
  bent 
  down 
  at 
  

   the 
  sides 
  to 
  the 
  legs 
  ; 
  behind 
  it 
  grows 
  nar- 
  

   rower, 
  and 
  extends 
  along 
  the 
  back 
  so 
  as 
  to 
  

   cover 
  the 
  basal 
  half 
  of 
  the 
  first 
  abdominal 
  segment. 
  The 
  flanks 
  (epister- 
  

   num 
  and 
  epimerum) 
  are 
  small 
  and 
  rudimentary 
  ; 
  the 
  ventral 
  or 
  under 
  

   piece 
  (sternum) 
  forms 
  abroad 
  Y-shaped 
  horny 
  or 
  chitinous 
  portion. 
  

  

  The 
  second 
  segment 
  (meso-thorax) 
  is 
  a 
  ring 
  one-half 
  as 
  long 
  as 
  broad; 
  

   the 
  scutellum 
  is 
  quite 
  indistinct, 
  and 
  forms 
  a 
  blister-like 
  swelling 
  on 
  the 
  

   top 
  of 
  the 
  segment. 
  The 
  flank 
  pieces 
  (episternum 
  and 
  epimerum) 
  are 
  of 
  

   nearly 
  equal 
  size, 
  being 
  short 
  and 
  deep, 
  and 
  rather 
  shorter 
  and 
  smaller 
  

  

  -II 
  

  

  c3 
  S 
  

  

  I 
  

   © 
  

  

  i 
  

  

  