﻿524 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Nymph. 
  (PI. 
  25, 
  fig. 
  2) 
  Of 
  much 
  the 
  same 
  form 
  as 
  that 
  of 
  S. 
  

   vi 
  c 
  1 
  n 
  um, 
  but 
  a 
  Uule 
  larger 
  (at 
  the 
  time 
  of 
  writing 
  this 
  1 
  have 
  not 
  my 
  

   specimens 
  at 
  hand 
  for 
  reference, 
  and 
  can 
  not 
  therefore 
  give 
  the 
  exact 
  

   measurements; 
  I 
  have 
  all 
  the 
  other 
  details 
  carefully 
  recorded 
  in 
  note 
  

   and 
  drawings, 
  but 
  the 
  measurements 
  have 
  been 
  accidentally 
  omitted) 
  ; 
  

   the 
  eyes 
  are 
  laterally 
  prominent, 
  but 
  well 
  rounded; 
  lateral 
  setae 
  nine; 
  

   mental 
  setae 
  about 
  12, 
  of 
  which 
  the 
  fifth 
  (counting 
  from 
  the 
  side) 
  is 
  

   longest; 
  the 
  dorsal 
  hooks 
  on 
  the 
  fourth 
  and 
  fifth 
  abdominal 
  segments 
  

   are 
  less 
  than 
  one 
  third 
  as 
  large 
  as 
  those 
  on 
  the 
  three 
  following 
  segments 
  ; 
  

   the 
  superior 
  abdominal 
  appendage 
  is 
  one 
  fourth 
  shorter 
  and 
  the 
  laterals 
  

   are 
  one 
  half 
  shorter 
  than 
  the 
  inferiors 
  ; 
  the 
  spines 
  of 
  the 
  ninth 
  segment 
  

   surpass 
  the 
  apices 
  of 
  the 
  superior 
  appendage, 
  and 
  are 
  strongly 
  incurved, 
  

   and 
  spinulose 
  serrate 
  on 
  their 
  exterior 
  margins. 
  

  

  Sympetrum 
  assimilatum 
  Uhler 
  

  

  Figure 
  30 
  

   1857 
  Libellula 
  assimilata 
  Uhler, 
  Acad. 
  nat. 
  sci. 
  Phil. 
  Proc. 
  p. 
  88 
  

   1893 
  Diplax 
  rubicundula 
  var. 
  assimilata 
  Calvert, 
  Am. 
  ent. 
  soc. 
  Trans. 
  

  

  20 
  : 
  263 
  

   1899 
  Diplax 
  rubicundula 
  Kellicott, 
  Odon. 
  Ohio, 
  p. 
  109 
  (description) 
  

  

  This 
  was 
  very 
  common 
  at 
  Saranac 
  Inn 
  in 
  Little 
  Clear 
  creek. 
  During 
  

   the 
  latter 
  part 
  of 
  July 
  the 
  nymph 
  could 
  be 
  seen 
  any 
  clear 
  morning 
  

   climbing 
  up 
  the 
  Sparganium 
  stems, 
  and 
  transformmg. 
  The 
  

   nymphs 
  were 
  obtained 
  whenever 
  collecting 
  was 
  done 
  from 
  the 
  beds 
  

   of 
  standing 
  vegetation 
  along 
  the 
  creek. 
  

  

  Sympetrum 
  rubicundulum 
  Say 
  

  

  Figure 
  30 
  

  

  1839 
  Libellula 
  rubicundula 
  Say, 
  Acad. 
  nat. 
  sci. 
  Phil. 
  Jour. 
  8 
  : 
  26 
  

   1861 
  Diplax 
  rubicundula 
  Hagen, 
  Synopsis 
  Naur. 
  N. 
  Am. 
  p. 
  176 
  

   1866 
  Diplax 
  rubicundula 
  Scudder, 
  Bost. 
  soc. 
  nat. 
  hist. 
  Proc. 
  10 
  : 
  219 
  

   1893 
  Diplax 
  rubicundula 
  Calvert, 
  Am. 
  ent. 
  soc. 
  Trans. 
  20:262 
  (descrip- 
  

   tion) 
  

  

  1899 
  Diplax 
  rubicundula 
  Kellicott, 
  Odon. 
  Ohio, 
  p. 
  109 
  (description) 
  

  

  1900 
  Diplax 
  rubicundula 
  Williamson, 
  Dragon 
  flies 
  Ind. 
  p. 
  322 
  (descrip- 
  

  

  tion) 
  

  

  Pale, 
  teneral, 
  yellowish 
  specimens 
  of 
  this 
  species 
  begin 
  fluttering 
  up 
  

   out 
  of 
  the 
  grasses 
  that 
  fill 
  the 
  shallow 
  water 
  in 
  the 
  upper 
  reaches 
  of 
  

   most 
  ponds 
  about 
  the 
  latter 
  end 
  of 
  June. 
  A 
  month 
  later, 
  when 
  they 
  

   have 
  assumed 
  their 
  brillant 
  black 
  and 
  red 
  coloration, 
  and 
  have 
  become 
  

   more 
  numerous, 
  we 
  find 
  them 
  scattered 
  everywhere. 
  They 
  seem 
  most 
  

   numerous, 
  however, 
  about 
  wet 
  meadows, 
  where 
  they 
  delight 
  to 
  go 
  

   foraging. 
  

  

  