﻿53^ 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Libellula 
  pulchella 
  Dmry 
  

  

  Plate 
  23, 
  fig. 
  2 
  

   1773 
  Libellula 
  pulcliella 
  Drury, 
  Illus. 
  exotic 
  ent. 
  v. 
  1, 
  pi. 
  48, 
  fig. 
  5 
  

   1857 
  Libellula 
  confusa 
  Uhler, 
  Acad. 
  nat. 
  sci. 
  Phil. 
  Proc. 
  p. 
  87 
  

   1861 
  Libellula 
  pulchella 
  Hagen, 
  Synopsis 
  Neur. 
  N. 
  Am. 
  p. 
  153 
  

   1893 
  Li 
  bell 
  ula 
  pulchella 
  Calvert, 
  Am. 
  ent. 
  soc. 
  Trans. 
  20:259 
  

   1895-97 
  Libellula 
  pulchella 
  Calvert, 
  N. 
  Y. 
  ent. 
  soc. 
  Jour. 
  3:47 
  and 
  

   5:94 
  (listed 
  from 
  Keeseville, 
  Dobbs 
  Ferry, 
  New 
  York, 
  Ithaca, 
  Scho- 
  

   harie 
  and 
  Buffalo) 
  

  

  1898 
  Libellula 
  pulchella 
  Needham, 
  Outdoor 
  studies, 
  p. 
  56, 
  fig. 
  55 
  

  

  1899 
  Libellula 
  pulchella 
  Kellicott, 
  Odon. 
  Ohio, 
  p. 
  101 
  (description) 
  

  

  1900 
  Libellula 
  pulchella 
  Williamson, 
  Dragon 
  flies 
  Ind. 
  p. 
  332 
  (descrip- 
  

  

  tion) 
  

  

  This 
  beautiful, 
  pond-loving 
  species 
  is 
  one 
  of 
  the 
  best 
  known 
  of 
  all 
  

   Odonata 
  peculiar 
  to 
  North 
  America. 
  The 
  old 
  and 
  white 
  pruinose 
  males 
  

   hovering 
  over 
  the 
  open 
  water 
  under 
  the 
  summer 
  sun 
  are 
  certainly 
  suffi- 
  

   ciently 
  striking 
  to 
  catch 
  the 
  eye 
  of 
  the 
  most 
  casual 
  observer. 
  The 
  

   species 
  was 
  not 
  common 
  at 
  Saranac 
  Inn. 
  But 
  a 
  few 
  specimens 
  were 
  

   seen 
  there. 
  I 
  reared 
  one 
  specimen 
  there, 
  many 
  at 
  Ithaca 
  (where 
  the 
  

   species 
  is 
  abundant) 
  and 
  many 
  in 
  Illinois. 
  

  

  Nymph. 
  Total 
  length 
  26 
  mm 
  ; 
  abdomen 
  16 
  mm; 
  hind 
  femur 
  6 
  mm 
  ; 
  

   width 
  of 
  head 
  6 
  mm, 
  of 
  abdomen 
  8 
  mm. 
  

  

  All 
  the 
  ridges 
  on 
  the 
  dorsum 
  of 
  this 
  nymph 
  are 
  fringed 
  with 
  stift, 
  

   strong, 
  erect 
  hairs 
  ; 
  these 
  are 
  specially 
  marked 
  about 
  the 
  borders 
  of 
  the 
  

   prothoracic 
  shield, 
  and 
  on 
  the 
  rear 
  of 
  the 
  head; 
  the 
  labium 
  is 
  rather 
  

   regularly 
  rounded 
  on 
  the 
  prominent 
  median 
  lobe, 
  lacking 
  the 
  median 
  

   toothlike 
  prominence 
  of 
  some 
  of 
  the 
  other 
  species; 
  the 
  lateral 
  setae 
  are 
  

   eight 
  to 
  nine 
  ; 
  mental 
  setae 
  12-13, 
  the 
  seven 
  outermost 
  each 
  side 
  longest; 
  

   the 
  lateral 
  spines 
  are 
  moderate 
  ; 
  the 
  dorsal 
  hooks 
  are 
  quite 
  distinctive, 
  

   being 
  represented 
  only 
  on 
  segments 
  4-6, 
  rudimentary, 
  or 
  sometimes 
  

   wanting 
  altogether. 
  Among 
  my 
  Ithaca 
  nymphs 
  were 
  a 
  good 
  many 
  on 
  

   which 
  I 
  could 
  find 
  no 
  dorsal 
  hooks 
  at 
  all. 
  My 
  Illinois 
  specimens 
  agree 
  

   with 
  the 
  nymph 
  from 
  Peoria 
  III, 
  figured 
  by 
  Cabot, 
  1 
  and 
  referred 
  by 
  

   doubtful 
  supposition 
  toNeurocorduliaobsoleta. 
  

  

  PLATHEMIS 
  

  

  There 
  is 
  a 
  single 
  species 
  within 
  our 
  limits. 
  

  

  Plathemis 
  lydia 
  Drury 
  

  

  Plate 
  24, 
  fig. 
  1 
  

   1770 
  Libellula 
  lydia 
  Drury, 
  Illus. 
  exotic 
  ent. 
  1 
  : 
  112, 
  pi. 
  47, 
  fig. 
  4 
  

   1773 
  Lib 
  ell 
  ula 
  trimaculata 
  DeGeer, 
  Mem. 
  ins. 
  3 
  : 
  556, 
  pi. 
  26, 
  fig. 
  2 
  

  

  1854 
  Emmons, 
  Agric. 
  N. 
  Y. 
  v. 
  5, 
  pi. 
  15, 
  fig. 
  4 
  and 
  5 
  (no 
  name 
  or 
  

  

  description) 
  

  

  1 
  Immature 
  state 
  of 
  the 
  Odonata. 
  pt 
  3, 
  pi. 
  6, 
  flg. 
  6. 
  

  

  