﻿414 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  are 
  emerging 
  ; 
  but 
  the 
  larger 
  stone 
  flies, 
  and 
  the 
  paler 
  and 
  green 
  ones 
  are 
  

   to 
  be 
  looked 
  for 
  mainly 
  in 
  summer. 
  

  

  Stone 
  flies 
  are 
  abundant 
  in 
  most 
  parts 
  of 
  the 
  state 
  of 
  New 
  York. 
  

   Every 
  rocky 
  stream 
  swarms 
  with 
  them. 
  But 
  about 
  Saranac 
  Inn 
  there 
  

   are 
  no 
  rocky 
  streams. 
  The 
  creeks 
  flow 
  leisurely 
  over 
  beds 
  of 
  sand 
  or 
  

   filter 
  through 
  mats 
  of 
  river 
  weed, 
  and 
  are 
  destitute 
  of 
  the 
  stony 
  obstruc- 
  

   tions 
  which 
  afford 
  suitable 
  shelter 
  for 
  young 
  stone 
  flies. 
  But 
  two 
  of 
  the 
  

   smaller 
  species 
  were 
  studied 
  there, 
  and 
  these 
  were 
  neither 
  abundant 
  nor 
  

   very 
  important 
  members 
  of 
  the 
  aquatic 
  fauna. 
  Both 
  live 
  in 
  Little 
  Clear 
  

   creek 
  and 
  in 
  the 
  pipes 
  which 
  bring 
  water 
  to 
  the 
  hatchery, 
  and 
  both 
  were 
  

   taken 
  as 
  adults 
  at 
  the 
  hatchery 
  windows. 
  Nathan 
  Banks 
  has 
  pubhshed 
  

   keys 
  to 
  the 
  North 
  American 
  genera 
  of 
  stone 
  flies 
  in 
  the 
  Transactions 
  of 
  

   the 
  American 
  entomological 
  society 
  ^ 
  20:328-29; 
  and 
  26:240-42, 
  The 
  

   student 
  is 
  referred 
  to 
  these. 
  

  

  CHLOROPERLA 
  

  

  This 
  genus 
  includes 
  a 
  small 
  number 
  of 
  delicate, 
  pale 
  green 
  stone 
  flies 
  

   about 
  half 
  an 
  inch 
  long. 
  At 
  emergence 
  they 
  fly 
  to 
  the 
  shelter 
  of 
  green 
  

   vegetation, 
  and 
  thereafter 
  remain 
  concealed 
  most 
  of 
  the 
  time, 
  returning 
  

   to 
  the 
  water, 
  perhaps, 
  to 
  deposit 
  their 
  eggs. 
  So 
  far 
  as 
  known, 
  the 
  

   nymphs 
  which 
  live 
  in 
  clear 
  streams 
  are 
  entirely 
  destitute 
  of 
  gills. 
  C. 
  A. 
  

   Briggs 
  has 
  recorded 
  a 
  curious 
  habit 
  of 
  the 
  adult 
  male 
  of 
  Chloroperla.i 
  

   Placed 
  in 
  a 
  box, 
  it 
  struck 
  the 
  bottom 
  with 
  its 
  penultimate 
  abdominal 
  seg- 
  

   ment 
  to 
  make 
  a 
  noise, 
  

  

  Chloroperia 
  bilineata 
  Say 
  

  

  1823 
  Sialis 
  bilineata 
  Say, 
  Godman's 
  western 
  quarterly 
  reporter. 
  2:165 
  

  

  (original 
  description) 
  

   1839 
  Chloroperia 
  transmarina 
  Newman 
  Ann. 
  «fe 
  mag. 
  nat. 
  hist. 
  (2) 
  3:87 
  

   1841 
  Chloroperia 
  transmarina 
  Pictet, 
  Perlides, 
  p. 
  283 
  

   1852 
  Chloroperia 
  transmarina 
  Walker, 
  Cat. 
  neur. 
  Ids. 
  Brit. 
  mus. 
  1; 
  161 
  

   1852 
  Chloroperia 
  picta 
  Walker, 
  Cat. 
  neur. 
  ins. 
  Brit. 
  mus. 
  1:161 
  

   1861 
  Chloroperia 
  bilineata 
  Hagen, 
  Synopsis 
  Neur. 
  N. 
  Am. 
  p. 
  30 
  

   1892 
  C 
  hi 
  oroperla 
  bilineata 
  Banks, 
  Am. 
  ent. 
  soc. 
  Trans. 
  19:342 
  (listed) 
  

   1899 
  C 
  hloroperla 
  bilineata 
  Banks, 
  Am. 
  ent. 
  soc. 
  Trans. 
  25:200 
  (in- 
  

   cluded 
  in 
  a 
  key 
  to 
  species 
  of 
  Chloroperia) 
  

  

  This 
  species 
  was 
  taken 
  only 
  in 
  the 
  hatchery. 
  It 
  was 
  already 
  disap- 
  

   pearing 
  when 
  we 
  arrived, 
  June 
  15. 
  A 
  few 
  could 
  be 
  found 
  about 
  the 
  

   windows 
  each 
  day. 
  Many 
  more 
  dead 
  ones 
  were 
  discovered 
  in 
  the 
  

   hatchery 
  loft, 
  entangled 
  in 
  spiders 
  webs, 
  or 
  fallen 
  on 
  the 
  window 
  sills, 
  

  

  1 
  Ent. 
  month, 
  mag. 
  1897. 
  S3 
  : 
  207-8. 
  

  

  