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  on 
  dorsal 
  part 
  of 
  thorax 
  and 
  wing 
  cases, 
  a 
  transverse 
  dorsal 
  

   row 
  on 
  abdominal 
  segments 
  2, 
  3 
  and 
  4. 
  The 
  abdomen 
  is 
  ob- 
  

   liquely 
  truncated 
  behind 
  the 
  4th 
  segment, 
  so 
  that 
  the 
  dorsal 
  

   surfaces 
  of 
  segments 
  5, 
  6 
  and 
  7 
  are 
  directed 
  nearly 
  posteriorly. 
  

   These 
  contain 
  the 
  numerous 
  pores 
  from 
  which 
  the 
  fibers 
  of 
  the 
  

   tuft 
  are 
  extruded. 
  

  

  The 
  nymphs 
  probably 
  feed 
  upon 
  the 
  fern 
  roots 
  in 
  the 
  fibrous 
  

   mass 
  of 
  the 
  outside 
  of 
  the 
  fern 
  trunks, 
  or 
  on 
  juices 
  of 
  the 
  decay- 
  

   ing 
  material. 
  The 
  largest 
  nymphs 
  collected 
  transformed 
  to 
  

   adults 
  in 
  a 
  few 
  days. 
  

  

  Very 
  little 
  has 
  been 
  recorded 
  of 
  the 
  life 
  history 
  and 
  habits 
  

   of 
  the 
  species 
  of 
  the 
  sub-family 
  Cixiinae 
  to 
  which 
  this 
  insect 
  

   belongs. 
  In 
  Psyche 
  VI, 
  p. 
  353, 
  1892, 
  Townsend 
  records 
  the 
  

   discovery 
  of 
  the 
  eggs 
  of 
  Oedeus 
  decens 
  laid 
  in 
  the 
  leaves 
  of 
  Yucca. 
  

   A 
  tiny 
  mass 
  of 
  white 
  fluffy 
  material 
  covers 
  each 
  puncture. 
  

  

  In 
  Ohio 
  Naturalist, 
  IV, 
  2, 
  p. 
  42, 
  1903, 
  Osborn 
  describes 
  

   Myndus 
  radicis, 
  and 
  gives 
  its 
  habits 
  so 
  far 
  as 
  known. 
  The 
  

   nymphs 
  are 
  very 
  similar 
  to 
  the 
  ones 
  I 
  have 
  described 
  above, 
  

   and 
  live 
  on 
  the 
  roots 
  of 
  grasses 
  and 
  other 
  plants, 
  in 
  crevices 
  lined 
  

   by 
  the 
  white 
  fibrous 
  material 
  from 
  their 
  abdominal 
  tufts. 
  

  

  Dr. 
  Perkins 
  has 
  informed 
  me 
  that 
  he 
  found 
  the 
  nymphs 
  of 
  an 
  

   Australian 
  species 
  beneath 
  the 
  bark 
  of 
  trees, 
  particularly 
  Eu- 
  

   calyptus 
  trees, 
  also 
  nj^mphs 
  of 
  a 
  Hawaiian 
  species 
  beneath 
  the 
  

   bark 
  of 
  Ohia 
  trees. 
  From 
  these 
  few 
  instances, 
  it 
  may 
  reasonably 
  

   be 
  inferred 
  that 
  the 
  nymphs 
  of 
  other 
  species 
  of 
  this 
  family 
  of 
  

   Fulgoroidea, 
  will 
  be 
  found 
  to 
  have 
  similar 
  obscure 
  habits, 
  which 
  

   accounts 
  for 
  there 
  being 
  so 
  little 
  known 
  concerning 
  them 
  at 
  

   present. 
  

  

  In 
  the 
  discussion 
  that 
  followed, 
  upon 
  the 
  use 
  of 
  the 
  pulveru- 
  

   lence 
  produced 
  by 
  the 
  nymphs 
  and 
  adults 
  of 
  this 
  group 
  of 
  insects, 
  

   Dr. 
  R. 
  C. 
  L. 
  Perkins 
  stated 
  that 
  while 
  some 
  means 
  of 
  protection 
  

   may 
  be 
  afforded, 
  by 
  this 
  excretion, 
  to 
  those 
  living 
  exposed, 
  it 
  

   can 
  hardly 
  apply 
  to 
  such 
  species 
  as 
  are 
  found 
  hiding 
  under 
  bark. 
  

   Despite 
  this 
  protection, 
  they 
  are 
  heavily 
  parasitized 
  in 
  Australia; 
  

   for 
  instance, 
  the 
  nymphs 
  of 
  Jamella 
  australiae 
  Kirkaldy, 
  a 
  Poe- 
  ' 
  

   killopterine 
  living 
  on 
  Pandanus, 
  were 
  found 
  living 
  under 
  ground 
  

   and 
  preyed 
  on 
  by 
  Baccha 
  siphanticida 
  Terry, 
  a 
  S3'rphid-fly, 
  which 
  

   also 
  preys 
  on 
  Colgar 
  peracuta 
  (Melichar) 
  and 
  various 
  species 
  of 
  

   Siphanta. 
  

  

  