﻿AQUATIC 
  INSECTS 
  IN 
  THE 
  ADIRONDACKS 
  

  

  453 
  

  

  a 
  favorite 
  foraging 
  ground 
  for 
  the 
  adults 
  ; 
  May 
  30, 
  1897, 
  and 
  for 
  several 
  

   days 
  thereafter, 
  they 
  were 
  flitting 
  about 
  this 
  meadow 
  in 
  numbers, 
  but 
  

   were 
  so 
  active 
  that 
  it 
  required 
  some 
  time 
  to 
  capture 
  many 
  specimens. 
  I 
  

   collected 
  once 
  enough 
  nymphs 
  to 
  fill 
  a 
  quart 
  fruit 
  jar 
  from 
  Six 
  Mile 
  

  

  * 
  /0 
  A 
  

  

  Fig. 
  1 
  1 
  Genitalia 
  of 
  Gomphiis 
  descriptua 
  Banks, 
  a 
  lateral 
  view 
  of 
  end 
  of 
  abdomen 
  of 
  

   male; 
  & 
  lateral 
  view 
  of 
  tlie 
  genital 
  hamules 
  of 
  the 
  male 
  (inverted 
  position) 
  ; 
  c 
  dorsal 
  view 
  of 
  the 
  

   terminal 
  abdominal 
  appendages 
  of 
  the 
  male 
  ; 
  d 
  ventral 
  view 
  of 
  the 
  vulvar 
  lamina 
  and 
  end 
  of 
  abdo- 
  

   men 
  of 
  female 
  

  

  creek 
  near 
  Ithaca 
  in 
  an 
  hour. 
  I 
  will 
  mention 
  a 
  variety 
  of 
  this 
  species 
  

   which 
  occurred 
  at 
  Saranac 
  Inn, 
  before 
  describing 
  the 
  nymph. 
  I 
  bred 
  

   the 
  species 
  at 
  Ithaca 
  and 
  collected 
  the 
  variety 
  at 
  Saranac 
  Inn, 
  but 
  am 
  

   unable 
  to 
  find 
  any 
  differences 
  between 
  them 
  in 
  the 
  immature 
  stages 
  ; 
  

   the 
  description 
  will 
  therefore 
  stand 
  'for 
  both 
  . 
  

  

  G. 
  descriptus 
  borealis 
  n. 
  var. 
  This 
  is 
  the 
  dragon 
  fly 
  figured 
  

   by 
  Hagen 
  in 
  Selys's 
  Motiographie 
  des 
  Gomphines 
  (pi. 
  9, 
  fig. 
  2, 
  dorsal 
  view) 
  

  

  Fig. 
  12 
  Gomphus 
  descriptus 
  borealis 
  n. 
  -war. 
  Letteringasinflg.il 
  

  

  asGomphus 
  spicatus. 
  There 
  are 
  several 
  points 
  of 
  difference 
  

   between 
  this 
  insect 
  and 
  G. 
  spicatus, 
  one 
  of 
  the 
  most 
  obvious 
  of 
  

   which 
  is 
  the 
  yellow 
  color 
  of 
  the 
  external 
  face 
  of 
  the 
  tibiae 
  in 
  s 
  pi 
  c 
  a 
  t 
  u 
  s. 
  

   The 
  appendages 
  and 
  the 
  proportions 
  of 
  the 
  apical 
  segments 
  of 
  the 
  

   abdomen 
  are 
  different. 
  

  

  