﻿138 
  

  

  SUPEBFAMILY 
  2 
  NEPOIDEA. 
  

  

  Families 
  Nabidae, 
  Gerridae, 
  ReduvUdae, 
  Nepidae, 
  Macroce- 
  

   phalidae 
  and 
  Emcocephalidae. 
  

  

  PHALANX 
  2 
  PAGIOPODA. 
  

  

  SUPEBFAMILY 
  1 
  MIROIDEA. 
  

  

  Families 
  Anthocoridae, 
  Clinocoridae, 
  Polyctenidae, 
  Miridae, 
  

   Dipsocoridae, 
  and 
  Aepophilidae. 
  

  

  SUPEBFAMILY 
  2 
  NOTONECTOIDEA. 
  

  

  Families 
  Acarvtliiidae, 
  Ochteridae, 
  Naucoridae, 
  Belostomaiidae, 
  

   Corixidae 
  and 
  Notonectidae. 
  

  

  The 
  following 
  notes 
  are 
  unfortunately 
  very 
  imperfect, 
  but 
  

   as 
  so 
  many 
  of 
  the 
  adult 
  Hemiptera 
  differ 
  in 
  colour, 
  pattern 
  

   and 
  form 
  from 
  their 
  nymphal 
  instars, 
  it 
  seems 
  better 
  to 
  record 
  

   the 
  known 
  stages 
  of 
  some 
  of 
  those 
  found 
  in 
  Hawaii 
  than 
  to 
  

   wait 
  indefinitely 
  for 
  full 
  data. 
  The 
  duration 
  of 
  the 
  instars 
  is 
  

   so 
  variable 
  here 
  as 
  to 
  be 
  of 
  little 
  value 
  for 
  reference, 
  while 
  such 
  

   details 
  derived 
  from 
  forest 
  dwellers 
  in 
  captivity 
  at 
  the 
  coast- 
  

   line 
  probably 
  bear 
  little 
  relation 
  to 
  their 
  free 
  life. 
  

  

  So 
  little 
  is 
  known 
  of 
  Heteropterous 
  Metamorphoses, 
  that 
  it 
  

   is 
  scarcely 
  possible 
  to 
  institute 
  comparisons, 
  but 
  the 
  following 
  

   facts 
  seem 
  of 
  interest: 
  

  

  1. 
  OecJialia 
  grisea 
  is 
  remarkably 
  constant 
  in 
  general 
  form 
  

   through 
  all 
  its 
  stages, 
  except 
  the 
  usual 
  gradual 
  lengthening 
  ; 
  the 
  

   lateral 
  margins 
  of 
  the 
  pronotum 
  in 
  the 
  later 
  stages 
  are 
  also 
  

   more 
  or 
  less 
  laminate 
  and 
  roughly 
  crenulate. 
  The 
  free 
  first 
  

   segment 
  of 
  the 
  labium, 
  a 
  character 
  separating 
  the 
  Cimicinae 
  

   from 
  the 
  Pentatominae, 
  is 
  present 
  in 
  Oechalia 
  at 
  the 
  first 
  

   instar. 
  

  

  2. 
  Coleotichus 
  hlachhumme 
  has 
  the 
  usual 
  Pentatomine 
  

   head-form 
  in 
  the 
  nymphal 
  instars, 
  suddenly 
  and 
  considerably 
  

   altered 
  in 
  the 
  adult. 
  The 
  piceous 
  ground 
  colour 
  of 
  the 
  early 
  

   nymph 
  stages, 
  deepens 
  to 
  deep 
  black 
  by 
  the 
  fourth 
  and 
  alters 
  

   to 
  indigo 
  blue 
  in 
  the 
  fifth, 
  but 
  the 
  tergites 
  in 
  the 
  adult 
  are 
  dead 
  

   black 
  again, 
  while 
  the 
  jewelled 
  green 
  and 
  red 
  head 
  and 
  prono- 
  

   tum 
  bear 
  little 
  semblance 
  to 
  those 
  of 
  the 
  nymphs. 
  

  

  