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  visible 
  from 
  above. 
  The 
  scutum 
  is, 
  however, 
  much 
  larger 
  than 
  in 
  any- 
  

   other 
  genera 
  of 
  Neuroptera 
  (restricted), 
  being 
  only 
  cleft 
  on 
  the 
  posterior 
  

   oue-fifth. 
  The 
  scutellum 
  is 
  very 
  short 
  and 
  broad; 
  one-fourth 
  as 
  long 
  as 
  

   broad, 
  with 
  a 
  linear, 
  depressed, 
  acute 
  apex. 
  The 
  postscutellum 
  is 
  not 
  

   visible 
  from 
  above, 
  and 
  is 
  only 
  seen 
  by 
  examining 
  the 
  posterior 
  aspect 
  

   of 
  the 
  segment 
  in 
  dissected 
  specimens. 
  

  

  The 
  metanotum 
  (Ascalaphus), 
  (PI. 
  LYI, 
  fig. 
  3.) 
  Much 
  smaller 
  than 
  the 
  

   mesonotum. 
  The 
  prsescutum 
  is 
  unusually 
  large, 
  with 
  a 
  swollen 
  cordate 
  

   portion. 
  The 
  scutum 
  is 
  entirely 
  divided, 
  the 
  two 
  halves 
  widely 
  sepa- 
  

   rated, 
  the 
  prgescutum 
  and 
  scutellum 
  meeting, 
  the 
  point 
  of 
  juncture 
  being 
  

   very 
  wide. 
  

  

  Myrmeleon. 
  (PI. 
  LIY, 
  fig. 
  3.) 
  The 
  praBSCutum 
  is 
  large, 
  excavated 
  in 
  

   front, 
  though 
  not 
  so 
  large 
  as 
  in 
  PolystoBchotes; 
  it 
  is 
  wider 
  than 
  the 
  

   scutellum. 
  The 
  scutum 
  is 
  entirely 
  divided 
  into 
  halves, 
  so 
  that 
  the 
  prai- 
  

   scutum 
  and 
  scutellum 
  touch 
  each 
  other. 
  The 
  scutellum 
  is 
  very 
  full 
  and 
  

   rounded 
  behind, 
  as 
  long 
  as 
  broad, 
  not 
  being 
  triangular 
  ; 
  the 
  side 
  pieces 
  

   are 
  large, 
  seen 
  from 
  above. 
  

  

  Folystcechotes. 
  (PL 
  LYI, 
  fig. 
  10.) 
  Prasscutuml 
  The 
  scutum 
  is 
  com- 
  

   IDletely 
  divided 
  by 
  the 
  scutellum, 
  which 
  is 
  acutely 
  triangular. 
  Postscu- 
  

   tellum? 
  

  

  Maiitispa, 
  (PI. 
  LY, 
  fig. 
  3.) 
  The 
  prsescutum 
  obsolete, 
  not 
  visible 
  from 
  

   above. 
  The 
  scutum 
  is 
  larger 
  than 
  usual, 
  but 
  only 
  cleft 
  on 
  the 
  posterior 
  

   fourth 
  of 
  its 
  length 
  ; 
  the 
  scutellum 
  is 
  short, 
  acutely 
  triangular 
  in 
  front, 
  

   but 
  very 
  broad, 
  and 
  the 
  sides 
  in 
  front 
  are 
  sinuous; 
  it 
  is 
  smaller 
  and 
  nar- 
  

   rower 
  than 
  in 
  the 
  mesonotum. 
  The 
  postscutellum 
  is 
  not 
  visible 
  unless 
  the 
  

   specimen 
  is 
  dissected, 
  when 
  it 
  is 
  seen 
  to 
  form 
  the 
  back 
  of 
  the 
  segment. 
  

  

  Fleurum, 
  

  

  Fropleurum 
  {Ascalaphus). 
  The 
  pleurum 
  is 
  hard 
  to 
  describe 
  from 
  a 
  

   single 
  specimen, 
  but 
  the 
  sclerites 
  are 
  much 
  rounded, 
  full, 
  and 
  swollen; 
  

   the 
  mesothorax 
  is 
  nearly 
  one-third 
  longer 
  and 
  thicker 
  than 
  the 
  meta- 
  

   thorax, 
  while 
  the 
  thorax 
  as 
  a 
  whole 
  is 
  spherical 
  and 
  much 
  consolidated. 
  

  

  Myrmeleon. 
  (PI. 
  LIY, 
  fig. 
  7.) 
  The 
  episternum 
  is 
  nearly 
  twice 
  as 
  large 
  

   as 
  the 
  epimerum. 
  The 
  coxae 
  are 
  very 
  large 
  and 
  long. 
  

  

  Folystcechotes, 
  The 
  episternum 
  is 
  not 
  so 
  much 
  larger 
  than 
  the 
  epime- 
  

   rum 
  as 
  in 
  Myrmeleon, 
  but 
  the 
  coxae 
  are 
  longer 
  and 
  slenderer. 
  

  

  Mantispa, 
  The 
  pleurites 
  are 
  very 
  small 
  f^the 
  episternum 
  is 
  very 
  

   small, 
  irregularly 
  oblong 
  ; 
  the 
  epimerum 
  is 
  subdivided, 
  small, 
  narrow, 
  

   but 
  a 
  little 
  more 
  regular 
  and 
  larger 
  than 
  the 
  episternum. 
  Coxae 
  very 
  

   large 
  and 
  long 
  ; 
  the 
  trochantine 
  submembranous. 
  

  

  Mesopleurum 
  {Ascalaphus?). 
  

  

  Myrmeleon. 
  (PI. 
  LIY, 
  fig. 
  8.) 
  The 
  flanks 
  are 
  very 
  broad 
  and 
  short, 
  

   as 
  a 
  whole. 
  The 
  suprasternite 
  present, 
  very 
  short 
  and 
  broad, 
  equilat- 
  

   erally 
  triangular 
  in 
  outline. 
  The 
  episternum 
  is 
  remarkably 
  short 
  and 
  

   broad, 
  triangular, 
  being 
  two-thirds 
  shorter 
  than 
  in 
  Polys 
  tcechotes. 
  The 
  

  

  