﻿308 
  REPORT 
  UNITED 
  STATES 
  ENTOMOLOGICAL 
  COMMISSION. 
  

  

  an 
  ordinal 
  group 
  of 
  Phylox)tera, 
  equivalent 
  to 
  the 
  Ortlioptera. 
  The 
  larval 
  

   Foriicala 
  is 
  very 
  close 
  to 
  Japyx 
  in 
  the 
  form 
  of 
  the 
  head, 
  the 
  thoracic 
  

   liomonomous 
  segments, 
  in 
  having 
  ten 
  uromeres, 
  in 
  the 
  nature 
  of 
  the 
  for- 
  

   ceps, 
  and 
  in 
  the 
  eleventh 
  rudimentary 
  segment. 
  So 
  close 
  is 
  the 
  resem.- 
  • 
  

   blance 
  that 
  we 
  are 
  somewhat 
  inclined 
  to 
  regard 
  Japyx 
  as 
  a 
  degraded 
  

   Forficula. 
  When 
  we 
  consider 
  the 
  nature 
  of 
  the 
  head, 
  the 
  elytra-like 
  fore 
  

   wings, 
  the 
  singular 
  hind 
  wings, 
  which 
  are 
  not 
  net-veined, 
  and 
  the 
  for- 
  

   ceps, 
  we 
  see 
  how 
  much 
  unlike 
  the 
  Orthoptera 
  Forficula 
  is. 
  It 
  does 
  not 
  

   api)roach 
  Blatta 
  nor 
  Termes. 
  Iq 
  the 
  character 
  of 
  the 
  wings 
  and 
  the 
  

   thorax, 
  especially 
  the 
  pleurites, 
  Forficula 
  is 
  suggestive 
  of 
  the 
  Coleo- 
  

   ptera, 
  though 
  differing 
  from 
  them 
  in 
  being 
  ametabolous. 
  

  

  In 
  Labia 
  the 
  head 
  is 
  as 
  in 
  Forficula. 
  The 
  body 
  being 
  much 
  shorter 
  

   and 
  thicker 
  than 
  in 
  Forficula, 
  there 
  are 
  some 
  relative 
  differences 
  from 
  

   what 
  has 
  been 
  described 
  in 
  Forficula. 
  

  

  Notum, 
  

  

  The 
  pronotum 
  is 
  shorter 
  and 
  broader, 
  but 
  still 
  covers 
  the 
  mesonotum; 
  

   the 
  latter 
  is 
  as 
  in 
  Forficula, 
  the 
  scutellum 
  being 
  similarly 
  spine-like. 
  

   The 
  metanotum 
  is 
  as 
  in 
  Forficula, 
  with 
  no 
  important 
  differences 
  j 
  the 
  

   scutellum 
  is 
  rather 
  more 
  distinct, 
  however, 
  but 
  the 
  postscutellum 
  is 
  

   much 
  shorter, 
  and 
  has 
  similar, 
  lateral, 
  subuiembranous 
  folds 
  in 
  front. 
  

  

  The 
  first 
  uromere, 
  with 
  its 
  sjnracle, 
  is 
  much 
  as 
  in 
  Forficula, 
  while 
  the 
  

   eucceeding 
  uromeres 
  are 
  much 
  shorter. 
  

  

  Pleurum. 
  

  

  The 
  prothoracic 
  pleurites 
  (episternum 
  and 
  epimerum) 
  are 
  as 
  in 
  For- 
  

   ficula, 
  but 
  shorter 
  and 
  broader. 
  

  

  In 
  the 
  raesothorax 
  the 
  epimerum 
  is 
  much 
  rounded, 
  being, 
  with 
  the 
  

   episternum, 
  rather 
  shorter 
  than 
  in 
  Forficula. 
  

  

  Tlie 
  mesothoracic 
  pleurites 
  are 
  as 
  in 
  Forficula, 
  but 
  much 
  shorter 
  and 
  

   wider 
  in 
  proportion. 
  . 
  

  

  Sternum. 
  

  

  The 
  sternites 
  are 
  not 
  essentially 
  different 
  from 
  those 
  of 
  Forficula, 
  but 
  

   are 
  rather 
  shorter 
  and 
  broader. 
  

  

  THE 
  LARYA 
  OF 
  FORFICULA 
  (PI. 
  XXIY). 
  

  

  The 
  notum 
  of 
  each 
  segment 
  is. 
  as 
  in 
  all 
  Orthopterous 
  larvae, 
  simple, 
  

   not 
  being 
  differentiated 
  into 
  scutum, 
  scutellum, 
  etc. 
  On 
  the 
  other 
  hand, 
  

   the 
  sternites 
  and 
  pleurites 
  are 
  as 
  in 
  the 
  adult, 
  and 
  this 
  proves 
  that 
  the 
  

   tergites 
  are 
  concerned 
  in 
  and 
  modified 
  by 
  the 
  development 
  of 
  the 
  wings. 
  

   The 
  episterna 
  are 
  subdivided 
  as 
  in 
  the 
  adult. 
  

  

  In 
  the 
  abdomen 
  there 
  are 
  eleven 
  uromeres, 
  but 
  the 
  first 
  tergite 
  is 
  

   wanting, 
  the 
  urosternite 
  being 
  present, 
  while 
  the 
  eleventh 
  tergite 
  is 
  

   small 
  and 
  rudimentary. 
  

  

  