﻿10 
  i 
  Dr. 
  G. 
  C. 
  Crampton's 
  Notes 
  on 
  the 
  Ancestry 
  of 
  the 
  

  

  Homoptera 
  as 
  Cicada 
  (see 
  also 
  Taylor, 
  1918, 
  Ann. 
  Ent. 
  

   Soc. 
  America, 
  vol. 
  11, 
  p. 
  225), 
  and 
  if 
  Eugereon 
  is 
  really 
  a 
  

   Hemipteroid 
  insect, 
  it 
  would 
  certainly 
  point 
  to 
  a 
  very 
  

   close 
  relationship 
  between 
  the 
  ancient 
  Hemiptera 
  and 
  the 
  

   Neuroptera. 
  Furthermore, 
  the 
  nature 
  of 
  the 
  mouth- 
  

   parts 
  (e. 
  g. 
  union 
  of 
  labial 
  palpi, 
  etc.), 
  head, 
  and 
  other 
  

   structures 
  in 
  the 
  Hemiptera, 
  are 
  quite 
  suggestive 
  of 
  the 
  

   condition 
  occurring 
  in 
  insects 
  descended 
  from 
  Neuroptera- 
  

   like 
  forbears 
  — 
  such 
  as 
  the 
  Mecoptera 
  and 
  their 
  relatives 
  

   the 
  Diptera, 
  and 
  there 
  are 
  evidences 
  of 
  a 
  relationship 
  to 
  

   the 
  lower 
  Lepidoptera 
  also 
  (which 
  are 
  members 
  of 
  this 
  

   group), 
  so 
  that 
  there 
  are 
  very 
  good 
  grounds 
  for 
  considering 
  

   that 
  the 
  Hemiptera 
  are 
  related 
  to 
  the 
  Mecoptera 
  and 
  other 
  

   insects 
  descended 
  from 
  Neuroptera-hke 
  forbears. 
  McLeay, 
  

   1821-1825, 
  apparently 
  realised 
  the 
  affinities 
  between 
  the 
  

   Hemiptera 
  and 
  certain 
  of 
  the 
  members 
  of 
  the 
  Neuropteroid 
  

   superorder, 
  for, 
  according 
  to 
  Handhrsch, 
  in 
  articles 
  pub- 
  

   lished 
  in 
  vol. 
  2 
  of 
  the 
  Horae 
  Ent., 
  and 
  vol. 
  14 
  of 
  the 
  Linn. 
  

   Trans., 
  McLeay 
  groups 
  the 
  Homoptera, 
  Hemiptera, 
  

   Siphonaptera, 
  Diptera 
  and 
  Lepidoptera 
  together 
  as 
  " 
  Hau- 
  

   stellata 
  " 
  — 
  a 
  grouping 
  adopted 
  by 
  Agassiz, 
  1851 
  (Classif. 
  of 
  

   Insects 
  from 
  Embryol. 
  Data), 
  and 
  in 
  part 
  by 
  Haeckel, 
  

   1866 
  (Generelle 
  Morphologic), 
  who 
  places 
  the 
  Hemiptera, 
  

   Homoptera, 
  Pedicuhdae, 
  Diptera 
  and 
  Lepidoptera 
  in 
  his 
  

   subclass 
  " 
  Sugentia." 
  Kolbe, 
  1884 
  (Berl. 
  Ent. 
  Zeit., 
  Bd. 
  28, 
  

   p. 
  169), 
  regards 
  the 
  Hemiptera 
  as 
  a 
  " 
  neotypic 
  offshoot 
  " 
  

   of 
  the 
  " 
  Orthoptera," 
  while, 
  as 
  far 
  back 
  as 
  1831, 
  Latreille, 
  

   in 
  his 
  Cours 
  d'Entomologie, 
  classes 
  the 
  Coleoptera, 
  Derma- 
  

   ptera, 
  Orthoptera 
  and 
  Hemiptera 
  in 
  the 
  group 
  called 
  

   Elythroptera 
  (or 
  Elytroptera 
  of 
  Dana, 
  1864), 
  on 
  the 
  basis 
  

   of 
  the 
  thickening 
  of 
  the 
  fore-wings. 
  Schoch 
  (Schw. 
  Ent., 
  

   Bd. 
  7) 
  derives 
  the 
  Hemiptera 
  from 
  forms 
  related 
  to 
  the 
  

   Odonata. 
  

  

  There 
  are 
  many 
  other 
  groupings 
  of 
  the 
  Hemiptera, 
  but 
  

   the 
  ones 
  which 
  appear 
  to 
  be 
  the 
  most 
  in 
  accord 
  with 
  the 
  

   facts 
  of 
  comparative 
  anatomy 
  are 
  those 
  which 
  place 
  the 
  

   Hemiptera 
  with 
  the 
  insects 
  grouped 
  about 
  the 
  Neuroptera 
  

   or 
  the 
  Psocidae. 
  While 
  the 
  Hemiptera 
  (with 
  the 
  Homo- 
  

   ptera) 
  exhibit 
  undeniable 
  affinities 
  with 
  the 
  Neuroptera 
  

   and 
  their 
  alhes, 
  it 
  is 
  likewise 
  quite 
  evident 
  that 
  the 
  Hemi- 
  

   ptera 
  are 
  no 
  less 
  closely 
  related 
  to 
  the 
  Psocidae 
  and 
  their 
  

   alhes, 
  and 
  provisionally, 
  at 
  least, 
  I 
  would 
  regard 
  them 
  as 
  

   somewhat 
  more 
  closely 
  related 
  to 
  the 
  Psocidae 
  and 
  their 
  

   allies 
  than 
  to 
  the 
  members 
  of 
  the 
  Neuropteroid 
  super- 
  

  

  