﻿ANATOMY 
  OF 
  THE 
  WESTERN 
  CRICKET. 
  

  

  175 
  

  

  ular 
  membranous 
  furrow, 
  can 
  thus 
  be 
  brought 
  together 
  so 
  as 
  to 
  seize 
  

   the 
  body 
  of 
  the 
  female 
  during 
  sexual 
  union. 
  

  

  The 
  plate 
  corresponding 
  to 
  the 
  oviducal 
  plate 
  of 
  the 
  female 
  is 
  narrow 
  

   behind 
  and 
  notched 
  at 
  the 
  end, 
  with 
  the 
  edges 
  folded 
  up; 
  the 
  ends 
  of 
  

   the 
  lobes 
  thus 
  formed 
  bear 
  y 
  

   each 
  a 
  movable, 
  cylindrical, 
  b, 
  

   short 
  appendage. 
  The 
  in- 
  L 
  

   tromittent 
  organ 
  is 
  at 
  base 
  | 
  

   soft 
  and 
  membranous 
  con- 
  & 
  

   sisting 
  of 
  two 
  irregular 
  \ 
  °>.irs 
  | 
  

   of 
  lobes, 
  to 
  the 
  upper 
  l?| 
  

   which 
  the 
  fork-shaped 
  penis 
  2, 
  

   is 
  attached, 
  consisting 
  of 
  a 
  | 
  f 
  

   pair 
  of 
  slender 
  boot-shaped 
  | 
  

   spines, 
  which 
  are 
  capable 
  of 
  J, 
  

   separating 
  and 
  thus 
  retain- 
  § 
  

   ing 
  their 
  hold 
  in 
  the 
  copula- 
  1 
  

   tory 
  sac 
  of 
  the 
  female 
  by 
  the 
  ^ 
  

   toe 
  of 
  each 
  "boot" 
  pointing 
  g» 
  

   outwards 
  and 
  sticking 
  into 
  | 
  

   the 
  walls 
  of 
  the 
  sac. 
  Along 
  | 
  

   the 
  exterior, 
  corresponding 
  °| 
  

   to 
  the 
  leg 
  of 
  each 
  "boot," 
  - 
  

   are 
  two 
  or 
  three 
  spines. 
  -J 
  

  

  Internal 
  anatomy. 
  — 
  The 
  | 
  

   following 
  description 
  is 
  » 
  

   based 
  on 
  the 
  structure 
  of 
  "» 
  

   Anabrus 
  purpurascens, 
  gath- 
  < 
  

   ered 
  in 
  Colorado 
  in 
  the 
  sum- 
  ^ 
  

   mer 
  of 
  1878, 
  and 
  preserved 
  % 
  

   carefully 
  in 
  strong 
  alcohol, 
  g. 
  

   From 
  these 
  specimens 
  the 
  "s 
  

   elaborate 
  drawing 
  by 
  Mr. 
  E. 
  § 
  

   Burgess 
  was 
  made, 
  to 
  which 
  "§■ 
  

   the 
  reader 
  is 
  referred 
  (Fig. 
  5). 
  | 
  

  

  Digestive 
  system. 
  — 
  The 
  g 
  

   mouth-opening 
  is 
  rather 
  ^ 
  

   large, 
  and 
  the 
  throat 
  (ceso- 
  | 
  

   yhagus) 
  begins 
  on 
  the 
  roof 
  of 
  » 
  

   the 
  mouth; 
  it 
  curves 
  upward 
  g 
  

   and 
  a 
  little 
  backward 
  as 
  far 
  § 
  

   as 
  the 
  center 
  of 
  the 
  head, 
  § 
  

   where 
  it 
  slightly 
  contracts 
  ~ 
  

   before 
  the 
  canal 
  dilates 
  into 
  P- 
  

   the 
  large 
  spacious 
  crop 
  (ingluvies) 
  ) 
  which 
  is 
  filled 
  with 
  partly 
  digested 
  veg- 
  

   etable 
  food. 
  In 
  A. 
  simpler* 
  it? 
  extends 
  hal£ 
  way 
  through 
  the 
  abdomen, 
  

  

  