﻿AQUATIC 
  INSECTS 
  IN 
  THE 
  ADIRONDACKS 
  43 
  1 
  

  

  all 
  the 
  recorded 
  localities 
  of 
  occurrence 
  within 
  the 
  state. 
  The 
  list 
  in- 
  

   cludes 
  1 
  02 
  nominal 
  species. 
  In 
  the 
  suborder 
  Anisoptera 
  belong 
  67 
  of 
  

   these, 
  to 
  which 
  I 
  am 
  able 
  to 
  add 
  15 
  species 
  and 
  varieties 
  not 
  hitherto 
  

   recorded. 
  These 
  are 
  : 
  Ophiogomphus 
  aspersus 
  Morse, 
  

   O. 
  johannus 
  Ndm. 
  (O. 
  c 
  a 
  r 
  o 
  1 
  u 
  s 
  Ndm. 
  has 
  been 
  previously 
  listed 
  as 
  

   O. 
  main 
  en 
  sis 
  Pack.) 
  Gomphus 
  abbreviatus 
  Hag., 
  Gom- 
  

   phus 
  scudderi 
  Sel., 
  G. 
  quadricolor 
  Walsh, 
  G. 
  f 
  u 
  r 
  c 
  i 
  f 
  e 
  r 
  

   Hag., 
  G. 
  sordidus 
  Hag., 
  G. 
  descriptus 
  borealis 
  n. 
  var., 
  

   Cordulegaster 
  ma 
  c 
  ula 
  tus 
  Sel., 
  Tetragoneuria 
  spinosa 
  

   Hag., 
  Cordulia 
  shurtleffi 
  Scudd., 
  Ladona 
  julia 
  Uhl. 
  

   and 
  Leucorhinia 
  glacialis 
  Hag. 
  I 
  am 
  able 
  also 
  to 
  describe 
  

   the 
  nymphs 
  of 
  all 
  the 
  genera 
  herein 
  characterized, 
  except 
  two 
  : 
  

   Gomphaeschna, 
  and 
  Micrathyria, 
  and 
  in 
  many 
  of 
  them, 
  

   to 
  describe 
  the 
  nymphs 
  of 
  a 
  number 
  of 
  species. 
  

  

  Immature 
  stages 
  in 
  this 
  order 
  are 
  still 
  very 
  little 
  known. 
  Of 
  the 
  80 
  

   species 
  herein 
  discussed, 
  I 
  find 
  that 
  the 
  nymphs 
  of 
  20 
  have 
  been 
  more 
  or 
  

   less 
  completely 
  described 
  and 
  referred 
  to 
  their 
  proper 
  species; 
  18 
  of 
  

   these 
  have 
  been 
  described 
  by 
  Hagen 
  and 
  Cabot, 
  and 
  most 
  of 
  them, 
  well 
  

   figured; 
  the 
  nymph 
  of 
  one 
  of 
  our 
  species 
  which 
  occurs 
  also 
  in 
  Europe, 
  

   Libellula 
  quadrimaculata 
  Linn,, 
  has 
  long 
  been 
  known 
  in 
  

   the 
  old 
  world 
  ; 
  and 
  recently 
  E. 
  B. 
  Williamson 
  has 
  been 
  able 
  to 
  get 
  for 
  

   description 
  the 
  nymph 
  ofTachopteryx 
  thoreyi 
  Selys, 
  our 
  sole 
  

   representative 
  of 
  the 
  Petalurinae 
  and 
  thus 
  to 
  fill 
  one 
  of 
  the 
  most 
  im- 
  

   portant 
  gaps 
  in 
  our 
  knowledge 
  of 
  the 
  immature 
  stages. 
  Most 
  of 
  these 
  

   are 
  briefly 
  redescribed 
  below, 
  and 
  42 
  new 
  descriptions 
  are 
  added. 
  

   Thus 
  the 
  early 
  stages 
  are 
  more 
  or 
  less 
  known 
  for 
  62 
  of 
  our 
  80 
  species. 
  

  

  With 
  three 
  exceptions 
  I 
  have 
  given 
  herein 
  no 
  descriptions 
  of 
  imagos; 
  

   The 
  descriptive 
  catalogues 
  of 
  Calvert, 
  KelHcott, 
  and 
  Williamson, 
  and 
  

   other 
  available 
  special 
  papers 
  contain 
  descriptions 
  which 
  it 
  is 
  hardly 
  

   profitable 
  here 
  to 
  duplicate. 
  In 
  absence 
  of 
  these 
  I 
  trust 
  the 
  keys 
  and 
  

   tables 
  herein 
  given 
  may 
  be 
  sufficient 
  for 
  the 
  determination 
  of 
  the 
  species. 
  

  

  In 
  the 
  bibUographies 
  given 
  below, 
  completeness 
  has 
  not 
  been 
  aimed 
  

   at 
  : 
  the 
  student 
  who 
  desires 
  complete 
  bibliography 
  should 
  consult 
  the 
  

   three 
  following 
  bibliographic 
  catalogues. 
  

  

  Hagen, 
  H. 
  A. 
  Synopsis 
  of 
  the 
  Odonata 
  of 
  America. 
  Bost. 
  soc. 
  nat. 
  hist. 
  

   Proc. 
  1875. 
  18 
  : 
  20-96. 
  

  

  Banks, 
  Nathan. 
  Synopsis, 
  catalogue 
  and 
  bibliography 
  of 
  the 
  neuropteroid 
  

   insects 
  of 
  temperate 
  North 
  America. 
  Am. 
  ent. 
  soc. 
  Trans. 
  1892. 
  19 
  ; 
  327-73 
  

  

  Kirby, 
  W. 
  F. 
  Synonymic 
  catalogue 
  of 
  Neuroptera 
  Odonata, 
  or 
  dragon 
  flies. 
  

   Lond. 
  1890. 
  

  

  