﻿NEUROPTERA. 
  33^ 
  

  

  The 
  orbits 
  are 
  large. 
  The 
  orbital 
  fossae 
  are 
  round, 
  but 
  not 
  so 
  distinct 
  

   as 
  in 
  Myrmeleon. 
  The 
  clypeus 
  is 
  as 
  long 
  as 
  broad, 
  the 
  sutures 
  more 
  

   distinct 
  than 
  in 
  Myrmeleon 
  5 
  the 
  median 
  transverse 
  ridge 
  is 
  more 
  distinct 
  

   than 
  in 
  Myrmeleon. 
  The 
  post- 
  and 
  anteclypeus 
  are 
  nearly 
  equal 
  in 
  size. 
  

   Labrum 
  as 
  in 
  Myrmeleon. 
  The 
  gula 
  is 
  broad, 
  membranous. 
  

  

  Mantispa}^'' 
  (PI. 
  LII, 
  figs. 
  4-6.) 
  The 
  head 
  is 
  held 
  vertically, 
  and 
  is 
  as 
  

   broad 
  as 
  Jong. 
  The 
  epicranium 
  is 
  broader 
  than 
  long, 
  rather 
  flat, 
  with 
  no 
  

   V-shaped 
  suture 
  or 
  ocellar 
  area. 
  The 
  clypeus 
  is 
  large, 
  very 
  distinct, 
  

   nearly 
  as 
  broad 
  as 
  long, 
  square 
  at 
  the 
  bass, 
  but 
  constricted 
  in 
  the 
  middle. 
  

   The 
  labrum 
  is 
  large, 
  broader 
  than 
  long, 
  much 
  rounded 
  and 
  produced 
  in 
  

   front. 
  The 
  gense 
  are 
  broad, 
  and 
  the 
  gular 
  region 
  is 
  rather 
  narrow, 
  but 
  

   moderately 
  so 
  compared 
  with 
  Oorydalus. 
  The 
  submentum 
  (*?) 
  is 
  large^ 
  

   and 
  nearly 
  as 
  long 
  as 
  broad. 
  The 
  ligula 
  is 
  very 
  large 
  and 
  long, 
  spatu- 
  

   late, 
  not 
  divided, 
  and 
  very 
  simple 
  compared 
  with 
  Corydalus. 
  

  

  THE 
  THORAX. 
  

  

  Notum. 
  

  

  In 
  AscalapJius 
  the 
  pronotum 
  (PI. 
  LYI, 
  fig. 
  1) 
  is 
  short 
  and 
  small^ 
  

   divided 
  into 
  two 
  halves 
  by 
  a 
  deep 
  median 
  suture. 
  In 
  its 
  shape 
  it 
  

   approaches 
  that 
  of 
  the 
  Odonata 
  more 
  than 
  any 
  other 
  true 
  Neuroptera. 
  

  

  Myrmeleon. 
  (PL 
  LIY, 
  fig. 
  1.) 
  It 
  is 
  square, 
  much 
  excavated 
  behind 
  

   and 
  full 
  in 
  front, 
  a 
  little 
  narrower 
  than 
  long. 
  

  

  PolystoecJiotes. 
  (PI. 
  LYII, 
  fig. 
  8.) 
  It 
  is 
  one-half 
  as 
  long 
  as 
  broad, 
  and 
  

   is 
  alittle 
  excavated 
  in 
  front 
  and 
  behind. 
  

  

  Mantispa. 
  It 
  is 
  very 
  long, 
  being 
  twice 
  as 
  long 
  as 
  its 
  greatest 
  breadth, 
  

   subpyriform 
  in 
  outline, 
  nearly 
  twice 
  as 
  broad 
  in 
  front 
  (full 
  on 
  the 
  front 
  

   edge) 
  as 
  behind. 
  It 
  is 
  excavated 
  behind 
  (PI. 
  LY, 
  fig. 
  1). 
  

  

  The 
  mesoyiotum. 
  AscalapJius. 
  (PI. 
  LYI, 
  fig. 
  2.) 
  The 
  praescutum 
  is 
  

   large 
  with 
  the 
  central 
  portion 
  subcordate, 
  larger 
  than 
  in 
  Myrmeleon. 
  

   The 
  scutum 
  is 
  almost 
  entirely 
  divided. 
  Scutellum 
  large 
  and 
  swollen, 
  

   apex 
  very 
  obtuse; 
  the 
  postscutellum 
  forms 
  a 
  transverse, 
  flat 
  ridge. 
  

  

  Myrmeleon 
  (PI. 
  JAY, 
  ^g. 
  2.) 
  Rectangular 
  in 
  outline. 
  The 
  praescutum 
  

   is 
  very 
  large, 
  as 
  long 
  as 
  broad, 
  and 
  much 
  as 
  in 
  Polystoechotes. 
  The 
  

   scutum 
  is 
  not 
  deeply 
  cleft, 
  the 
  median 
  third 
  being 
  entire. 
  The 
  scutel- 
  

   lum 
  is 
  small, 
  sub 
  triangular, 
  broad, 
  and 
  with 
  the 
  apex 
  obtuse, 
  while 
  the 
  

   side 
  sclerites 
  are 
  large, 
  as 
  in 
  the 
  metanotum. 
  Postscutellum? 
  

  

  Folystcechotes. 
  (PI. 
  LYI, 
  fig. 
  9). 
  The 
  praescutum 
  is 
  very 
  large, 
  being 
  

   nearly 
  as 
  large 
  and 
  wide 
  as 
  the 
  scutum, 
  and 
  divided 
  by 
  a 
  median 
  furrow 
  ; 
  

   each 
  half 
  full 
  and 
  rounded 
  in 
  front. 
  The 
  scutum 
  is 
  completely 
  cleft, 
  the 
  

   praescutum 
  and 
  scutellum 
  touching 
  ; 
  each 
  side 
  of 
  the 
  scutum 
  is 
  squarish. 
  

   The 
  scutellum 
  is 
  broader 
  than 
  long, 
  very 
  acute, 
  being 
  produced 
  in 
  front, 
  

   forming 
  a 
  long 
  point. 
  The 
  postscutellum 
  is 
  rather 
  large 
  and 
  very 
  wide, 
  

   being 
  divided 
  by 
  a 
  median 
  suture. 
  

  

  Mantispa. 
  (PI. 
  LY, 
  fig. 
  2.) 
  Praescutum 
  minute, 
  nearly 
  obsolete, 
  not 
  

  

  ^"Mantispa 
  brunnea 
  Say, 
  from 
  Utali; 
  iclcDtified 
  by 
  Dr. 
  Hagen. 
  

  

  