﻿130 
  

  

  Supplementary 
  Notes 
  on 
  Rhyncogfonus 
  tolaekburni 
  and 
  Its 
  

  

  Parasites. 
  

  

  BY 
  E. 
  C. 
  L. 
  PERKINS. 
  

  

  (With 
  figure) 
  

  

  In 
  the 
  Annual 
  Address 
  to 
  this 
  Society 
  for 
  the 
  year 
  1905, 
  

   after 
  giving 
  an 
  account 
  of 
  the 
  insects 
  inhabiting 
  a 
  portion 
  of 
  

   the 
  mountains 
  near 
  Honolulu, 
  in 
  some 
  concluding 
  remarks 
  I 
  

   observed 
  that 
  "to 
  know 
  the 
  life-history 
  of 
  Rhyncogoniis 
  hlack- 
  

   humi 
  and 
  why 
  it 
  remains 
  so 
  comparatively 
  weak 
  in 
  individuals, 
  

   or 
  to 
  fully 
  ascertain 
  the 
  life-history 
  of 
  some 
  of 
  the 
  Carabids, 
  

   and 
  why 
  again 
  some 
  are 
  so 
  common, 
  others 
  so 
  extremely 
  rare, 
  

   would 
  be 
  far 
  more 
  interesting 
  than 
  the 
  discovery 
  of 
  half 
  a 
  

   dozen 
  new 
  Proterhmus 
  which 
  would 
  surely 
  differ 
  but 
  little 
  

   from 
  species 
  already 
  known." 
  From 
  Mr. 
  Giffard's 
  interesting 
  

   paper 
  just 
  read, 
  it 
  will 
  be 
  seen 
  that 
  the 
  desired 
  information 
  as 
  

   to 
  the 
  Bhyncogonus 
  is 
  now 
  largely 
  supplied. 
  

  

  The 
  distribution 
  on 
  Oahu 
  of 
  Bhyncogonus 
  hlackhurni 
  is 
  not 
  

   exactly 
  known, 
  but 
  it 
  is 
  almost 
  certainly 
  absent 
  from 
  the 
  

   Northern 
  third 
  of 
  the 
  long 
  Koolau 
  range, 
  which 
  has 
  been 
  much 
  

   collected 
  over, 
  and 
  it 
  is 
  probably 
  absent 
  from 
  the 
  middle 
  third 
  

   also. 
  It 
  has 
  never 
  been 
  taken, 
  in 
  fact, 
  on 
  any 
  part 
  of 
  the 
  

   range 
  north 
  of 
  Nuuanu 
  Valley, 
  which 
  very 
  possibly 
  limits 
  its 
  

   distribution. 
  It 
  occurs 
  throughout 
  the 
  mountains 
  south 
  of 
  

   ISfuuanu, 
  wherever 
  they 
  have 
  been 
  investigated, 
  but 
  only 
  at 
  

   certain 
  elevations 
  being 
  absent 
  from 
  the 
  higher 
  and 
  wetter 
  

   portions 
  of 
  the 
  range. 
  It 
  is 
  partial 
  to 
  many 
  other 
  trees 
  besides 
  

   Acacia 
  hoa, 
  such 
  as 
  Straussia, 
  'Euphorbia^ 
  etc., 
  and 
  is 
  even 
  

   found 
  on 
  ferns 
  such 
  as 
  Gleichenia 
  dichotoma. 
  It 
  is 
  absent 
  

   from, 
  or 
  at 
  least 
  has 
  never 
  been 
  found 
  in 
  the 
  Waianae 
  range 
  

   of 
  mountains. 
  In 
  its 
  own 
  limits 
  it 
  is 
  overlapped 
  by 
  B. 
  koebelei 
  

   and 
  possibly 
  other 
  species, 
  and 
  outside 
  the 
  limits 
  it 
  is 
  replaced 
  

   by 
  several 
  other 
  forms 
  at 
  present 
  undetermined. 
  It 
  is 
  rather 
  

   of 
  a 
  social 
  nature 
  (being 
  like 
  other 
  Bhyncogonus 
  in 
  this 
  re- 
  

   spect) 
  so 
  that 
  not 
  infrequently 
  four 
  or 
  five 
  individuals 
  will 
  

   be 
  found 
  in 
  company, 
  sometimes 
  even 
  closely 
  packed 
  together, 
  

   when 
  at 
  rest, 
  and 
  the 
  sexes 
  are 
  usually 
  in 
  coitu. 
  In 
  beating 
  

   trees, 
  it 
  is 
  often 
  found 
  singly, 
  but 
  this 
  is 
  no 
  doubt 
  due 
  to 
  the 
  

   fact 
  that 
  some 
  fall 
  clear 
  of 
  the 
  beating 
  cloth 
  or 
  umbrella, 
  and 
  

   consequently 
  are 
  not 
  noticed. 
  

  

  The 
  large 
  size 
  of 
  the 
  beetles 
  (as 
  compared 
  with 
  most 
  native 
  

   Coleoptera) 
  and 
  their 
  extreme 
  tenacity 
  of 
  life 
  under 
  almost 
  any 
  

  

  