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  3. 
  Ithamar 
  liawaiiensis 
  varies 
  in 
  form 
  and 
  colour 
  in 
  the 
  

   stages, 
  and 
  in 
  one 
  or 
  more 
  stages 
  is 
  particoloured 
  bristly. 
  

  

  4. 
  Ehopalus 
  hyalinus 
  shows 
  the 
  inadequacy 
  and 
  inaccuracy 
  

   of 
  the 
  old 
  character 
  for 
  separating 
  the 
  Lygaeidae 
  from 
  the 
  

   Geocoridae, 
  viz., 
  "Supericornes" 
  and 
  "Infericornes." 
  In 
  the 
  

   nymphs 
  of 
  Rhopalus, 
  the 
  antennae 
  are 
  inserted 
  on 
  a 
  line 
  

   between 
  the 
  eyes 
  and 
  the 
  apex 
  of 
  the 
  head, 
  and 
  the 
  same 
  is 
  the 
  

   case 
  in 
  the 
  adults, 
  in 
  some 
  of 
  which 
  indeed, 
  they 
  are 
  below 
  the 
  

   line. 
  The 
  proper 
  character 
  lies 
  in 
  the 
  tegminal 
  venation. 
  In 
  

   the 
  former 
  there 
  are 
  many 
  veins, 
  at 
  least 
  8, 
  in 
  the 
  membrane; 
  

   in 
  the 
  latter, 
  not 
  more 
  than 
  five 
  (^). 
  

  

  In 
  B. 
  hyalinus, 
  the 
  early 
  nymph 
  stages 
  have 
  a 
  blood-red 
  

   ground 
  colour, 
  but 
  in 
  the 
  fourth 
  or 
  fifth, 
  the 
  nymphs 
  are 
  green- 
  

   ish 
  testaceous, 
  with 
  dark 
  markings, 
  etc. 
  ! 
  

  

  4. 
  The 
  collar 
  in 
  certain 
  Geocorids 
  is 
  present 
  in 
  the 
  nymphs 
  

   as 
  well 
  as 
  in 
  the 
  adults, 
  affording 
  apparently 
  a 
  good 
  group- 
  

   character. 
  

  

  5. 
  The 
  labium 
  in 
  young 
  nymphs 
  is 
  of 
  the 
  very 
  long, 
  appar- 
  

   ently 
  gradually 
  shortening. 
  The 
  truth 
  is 
  that 
  the 
  abdomen 
  in 
  

   particular 
  expands 
  and 
  lengthens, 
  while 
  the 
  labium 
  remains 
  

   almost 
  stationary. 
  

  

  The 
  following 
  forms 
  are 
  considered 
  at 
  more 
  or 
  less 
  length: 
  

  

  (8) 
  The 
  Neididae, 
  treated 
  either 
  as 
  a 
  separate 
  family 
  or 
  as 
  a 
  subfamily 
  

   of 
  the 
  Lygaeidae, 
  are 
  rightfully 
  a 
  subfamily 
  of 
  the 
  Geocoridae. 
  On 
  the 
  

   other 
  hand, 
  the 
  Pyrrhocoridae, 
  sometimes 
  ranked 
  as 
  a 
  subfamily 
  of 
  the 
  

   Geocoridae, 
  are 
  more 
  closely 
  allied 
  to 
  the 
  Lygaeidae. 
  Many 
  authors 
  

   persist 
  in 
  terming 
  the 
  Geocoridae, 
  " 
  Lygaeidae," 
  although 
  they 
  do 
  not 
  

   contain 
  the 
  genus 
  Lygaeus 
  F. 
  (= 
  Hoplopterna 
  Stal). 
  Lygaeidae 
  Kirk- 
  

   aldy= 
  Coreidae 
  ^naW. 
  Geocoridae 
  YJn\&\A^= 
  Lygaeidae 
  a.ViZ\\.. 
  

  

  