﻿NEUROPTERA. 
  

   THE 
  THORAX. 
  

  

  343 
  

  

  The 
  pronotum 
  (PI. 
  LX, 
  fig. 
  4) 
  is 
  very 
  small 
  aod 
  short, 
  with 
  a 
  deep 
  

   transverse, 
  impressed 
  line 
  j 
  on 
  the 
  median 
  line 
  it 
  is 
  excavated 
  in 
  front 
  and 
  

   behind. 
  

  

  The 
  mesonotum 
  (PI. 
  LX, 
  fig. 
  15) 
  is 
  without 
  a 
  prsescutum; 
  the 
  scutum 
  

   is 
  large, 
  about 
  two-thirds 
  as 
  long 
  as 
  broad, 
  and 
  well-rounded 
  in 
  front. 
  

   The 
  scutellum 
  is 
  small, 
  transversely 
  narrow 
  oblong. 
  The 
  post-scutel- 
  

   lum 
  is 
  moderately 
  long, 
  interrupted 
  by 
  the 
  median 
  line. 
  

  

  The 
  metanotum 
  (PI. 
  LX, 
  fig. 
  6) 
  is 
  much 
  shorter 
  than 
  the 
  mesonotum, 
  

   but 
  of 
  the 
  same 
  general 
  shape; 
  the 
  scutellum 
  is 
  also 
  of 
  the 
  same 
  general 
  

   shape, 
  but 
  a 
  little 
  longer. 
  The 
  postscutellum 
  is 
  as 
  in 
  the 
  mesonotum. 
  

  

  Pleurum, 
  

  

  The 
  pleurites 
  in 
  this 
  family 
  are 
  very 
  long 
  and 
  narrow, 
  the 
  thorax 
  

   being 
  much 
  compressed, 
  its 
  general 
  shape 
  approaching 
  that 
  of 
  the 
  

   Trichoptera 
  and 
  Lepidoptera. 
  

  

  The 
  propleurum 
  (PI. 
  LX, 
  fig. 
  7) 
  is 
  rudimentary, 
  the 
  episterna 
  and 
  

   epimera 
  being 
  membranous. 
  

  

  The 
  mesopleurum 
  (PI. 
  LX, 
  fig. 
  9) 
  has 
  the 
  episternum 
  undivided, 
  and 
  

   is 
  moderately 
  full 
  in 
  front. 
  The 
  epimerum 
  is 
  entire, 
  narrow, 
  a 
  little 
  

   shorter 
  than 
  the 
  episternum, 
  and 
  not 
  so 
  broad. 
  The 
  coxa 
  is 
  rather 
  

   slender; 
  the 
  trochantine 
  long 
  and 
  narrow. 
  

  

  The 
  metapleurum 
  (PI. 
  LX, 
  fig. 
  8) 
  is 
  as 
  the 
  mesopleurum, 
  but 
  the 
  

   episternum 
  andepimerum 
  are 
  decidedly 
  shorter, 
  and 
  slightly 
  broader 
  in 
  

   proportion. 
  The 
  coxae 
  are 
  a 
  little 
  larger 
  and 
  thicker, 
  while 
  the 
  trochan- 
  

   tine 
  is 
  about 
  the 
  same. 
  

  

  Sternum. 
  

  

  The 
  prosternum 
  is 
  linear 
  and 
  rudimentary. 
  

  

  The 
  mesosternum 
  is 
  short 
  and 
  broad, 
  

   much 
  as 
  in 
  Lepidoptera. 
  

  

  The 
  metasternum 
  is 
  much 
  smaller 
  

   and 
  less 
  distinct 
  than 
  the 
  mesoster- 
  

   num. 
  

  

  Finally, 
  in 
  the 
  thorax 
  as 
  a 
  whole, 
  

   and 
  in 
  the 
  form 
  of 
  the 
  pleurites 
  and 
  

   sternites, 
  we 
  have 
  a 
  striking 
  approxi- 
  

   mation 
  to 
  the 
  Lepidoptera. 
  

  

  THE 
  ABDOMEN. 
  

  

  There 
  are 
  ten 
  uromeres; 
  ten 
  terg- 
  

   ites, 
  the 
  first 
  very 
  short 
  and 
  trans- 
  

   versely 
  linear, 
  the 
  sixth 
  to 
  tenth 
  nar- 
  ^°^ 
  "^ 
  ^^^TnTargecL^"^' 
  ^'"''^^' 
  

   jow, 
  there 
  are 
  seven 
  urites, 
  very 
  narrow, 
  as 
  long 
  as 
  broad. 
  

  

  