﻿and 
  other 
  manure 
  beetles; 
  among 
  H3'menoptera, 
  Eucoila 
  ini- 
  

   patiens 
  Say 
  on 
  Horn-fly 
  and 
  other 
  dung-Diptera, 
  and 
  a 
  new 
  

   species 
  of 
  Perissopterus, 
  the 
  last 
  from 
  China, 
  bred 
  from 
  the 
  Coccid 
  

   Lepidosaphes 
  ulmi 
  (Linn.) 
  on 
  Camphor, 
  and 
  sent 
  by 
  Mr. 
  Com- 
  

   pere, 
  all 
  the 
  others 
  being 
  sent 
  by 
  Mr. 
  Koebele. 
  He 
  also 
  exhibited 
  

   leaves 
  of 
  a 
  Cycas 
  infested 
  by 
  a 
  Coccid, 
  Chrysomphalus 
  aonidum 
  

   (Linn.), 
  also 
  from 
  China. 
  Many 
  of 
  the 
  Coccids 
  were 
  perforated 
  

   by 
  the 
  exit 
  holes 
  of 
  four 
  or 
  six 
  parasites, 
  a 
  species 
  which 
  has 
  not 
  

   been 
  seen 
  thus 
  far. 
  The 
  plant 
  was 
  confined 
  in 
  a 
  cage 
  in 
  the 
  

   Insectary 
  with 
  local 
  plants 
  infested 
  by 
  the 
  sam.e 
  Coccid. 
  

  

  Dr. 
  R. 
  C. 
  L.' 
  Perkins 
  then 
  presented 
  " 
  Notes 
  on 
  a 
  collection 
  

   made 
  at 
  Kiiauea, 
  Hawaii, 
  during 
  July," 
  and 
  exhibited 
  specimens.* 
  

  

  Papers. 
  

   Observations 
  on 
  the 
  Life 
  History 
  of 
  Oliarus 
  koanoa 
  Kirkaldy. 
  

  

  By 
  O. 
  H. 
  SwEZEV. 
  

  

  On 
  August 
  12th, 
  1906, 
  while 
  digging 
  for 
  insects 
  among 
  the 
  

   decaying 
  leaf-bases 
  and 
  fibrous 
  matter 
  of 
  tree-fern 
  trunks, 
  in 
  

   the 
  forests 
  of 
  Mt. 
  Tantalus, 
  I 
  discovered 
  nymphs 
  of 
  some 
  species 
  

   of 
  leaf-hopper, 
  which, 
  on 
  rearing, 
  proved 
  to 
  be 
  Oliarus 
  koanoa. 
  

   The 
  nymphs 
  were 
  in 
  cavities 
  or 
  tunnels 
  lined 
  with 
  a 
  white 
  fibrous 
  

   material 
  wlrich 
  resembled 
  mold, 
  or 
  spider's 
  web, 
  and 
  which 
  is 
  an 
  

   excretion 
  from 
  the 
  teiTninal 
  abdominal 
  segmxents 
  of 
  the 
  nymph. 
  

   Each 
  nymph 
  had 
  a 
  tuft 
  or 
  brush 
  of 
  straight 
  fibers 
  of 
  this 
  ma- 
  

   terial, 
  extending 
  backward 
  and 
  slightly 
  upwards, 
  and 
  spread 
  

   som.ewhat 
  fan-shaped. 
  It 
  is 
  probably 
  rubbed 
  off 
  accidentally 
  

   in 
  the 
  movements 
  of 
  the 
  insects, 
  and 
  serves 
  to 
  aid 
  in 
  hiding 
  or 
  

   protecting 
  it. 
  It 
  is 
  rapidly 
  replaced. 
  A 
  specimen 
  from 
  which 
  

   it 
  was 
  entirely 
  removed, 
  had 
  it 
  completely 
  produced 
  again 
  within 
  

   24 
  hours. 
  

  

  The 
  full-growth 
  nymph 
  is 
  about 
  5 
  mmi. 
  long, 
  and 
  2 
  mm. 
  wide, 
  

   about 
  even 
  width 
  throughout 
  ; 
  the 
  tuft 
  is 
  from 
  2 
  to 
  5 
  mm 
  . 
  Whole 
  

   insect 
  whitish, 
  with 
  pale 
  greyish 
  markings 
  on 
  the 
  thorax, 
  and 
  5 
  

   dorsal 
  bands 
  on 
  the 
  abdomen 
  in 
  front 
  of 
  the 
  cottony 
  tuft. 
  Eyes 
  

   dark 
  brown, 
  partially 
  hidden 
  behind 
  projecting 
  margins 
  of 
  the 
  

   frons. 
  Rostrum 
  extends 
  beyond 
  2nd 
  abdominal 
  segment. 
  Sen- 
  

   sory 
  pits 
  are 
  very.numerous 
  ; 
  a 
  row 
  near 
  the 
  mxargin 
  of 
  frons, 
  many 
  

  

  *This 
  has 
  since 
  been 
  incorporated 
  in 
  Dr. 
  Perkins' 
  Presidential 
  ad- 
  

   dress. 
  — 
  Eds. 
  

  

  