﻿AQUATIC 
  INSECTS 
  IN 
  THE 
  ADIRONDACKS 
  461 
  

  

  Abdomen 
  with 
  obtuse, 
  continuous 
  middorsal 
  ridge, 
  showing 
  no 
  trace 
  

   of 
  dorsal 
  hooks 
  ; 
  lateral 
  spines 
  very 
  small, 
  closely 
  appressed, 
  and 
  incon- 
  

   spicuous, 
  present 
  only 
  on 
  segments 
  8 
  and 
  '9, 
  on 
  8 
  very 
  short, 
  on 
  9 
  

   longer, 
  but 
  closely 
  applied 
  to 
  the 
  sides 
  of 
  segment 
  10. 
  The 
  loth 
  segment 
  

   is 
  hardly 
  shorter 
  than 
  the 
  eighth, 
  but 
  it 
  is 
  less 
  than 
  half 
  as 
  long 
  as 
  the 
  

   ninth. 
  

  

  The 
  mentum 
  of 
  the 
  labium 
  is 
  distinctly 
  produced 
  and 
  rounded 
  on 
  its 
  

   front 
  border, 
  with 
  a 
  median 
  brown 
  tooth 
  in 
  the 
  midst 
  of 
  the 
  fringing 
  flat 
  

   hairs. 
  The 
  lateral 
  lobe 
  is 
  broad 
  and 
  strongly 
  arched, 
  with 
  about 
  six 
  

   coarsely 
  serrate 
  teeth 
  on 
  its 
  inner 
  margin. 
  

  

  Gomphus 
  furcifer 
  Hagen 
  

  

  1878 
  Gomphus 
  furcifer 
  Hagen, 
  Acad. 
  Belg. 
  (2) 
  Bui. 
  46:458 
  

  

  1899 
  Gomphus 
  furcifer 
  Kellicott, 
  Odon. 
  Ohio, 
  p. 
  64 
  (debcri|)tion 
  and 
  figure) 
  

  

  1900 
  Gomphus 
  furcifer 
  Williamsou, 
  Dragon 
  flies 
  lud. 
  ]). 
  292 
  (description 
  

  

  and 
  figure) 
  

  

  This 
  species 
  has 
  not 
  hitherto 
  been 
  recorded 
  from 
  New 
  York 
  state, 
  and 
  

   I 
  have 
  not 
  seen 
  it 
  there 
  at 
  large 
  ; 
  but 
  there 
  is 
  a 
  specimen 
  bearing 
  an 
  

   Ithaca 
  label 
  in 
  the 
  Cornell 
  university 
  collection. 
  The 
  nymph 
  is 
  unknown. 
  

  

  . 
  DROMOGOMPHUS 
  

  

  A 
  single 
  species 
  of 
  this 
  genus 
  belongs 
  to 
  the 
  New 
  York 
  fauna. 
  

   Dromogomphus 
  spinosus 
  Selys 
  

  

  1854 
  Gomphus 
  spinosus 
  Selys, 
  Acad. 
  Belg. 
  (2) 
  Bui. 
  21 
  : 
  59 
  

  

  1861 
  Gomphus 
  si)ino8U8 
  Hagen, 
  Synopsis 
  Neur. 
  N. 
  Am. 
  p. 
  102 
  

  

  1862 
  Gomphus 
  spinosus 
  Walsh, 
  Acad. 
  nat. 
  sci. 
  Phil. 
  Proo. 
  p. 
  391 
  (note) 
  

  

  1863 
  Gomphus 
  spinosus 
  Hagen, 
  Stett. 
  eut. 
  zeit. 
  24:373 
  

  

  1873 
  G 
  o 
  m 
  p 
  h 
  u 
  s 
  spinosus 
  Hagen, 
  Bost. 
  soc. 
  nat. 
  hist. 
  Proc. 
  16:359 
  

   1875 
  Gomphus 
  spinosus 
  Hagen, 
  Bost. 
  soc. 
  nat. 
  hist. 
  Proc. 
  18 
  : 
  44 
  (bibli- 
  

   ography) 
  

  

  1893 
  Dromogomphus 
  spinosus 
  Calvert, 
  Am. 
  ent. 
  soc. 
  Trans. 
  20:245 
  

  

  (description) 
  

  

  1894 
  ©ro 
  mogomphus 
  s 
  p 
  i 
  n 
  o 
  s 
  u 
  s 
  Banks, 
  Can. 
  ent. 
  26:77 
  (listed 
  from 
  

  

  Ithaca 
  and 
  Baldwinsville) 
  

  

  1895 
  D 
  r 
  o 
  m 
  o 
  go 
  m 
  ph 
  u 
  s 
  s 
  p 
  i 
  n 
  osu 
  s 
  Calvert, 
  N. 
  Y. 
  ent. 
  soc. 
  Jour. 
  3:45 
  

  

  (listed 
  from 
  Ithaca 
  and 
  Baldwinsville) 
  

   1897 
  Dr 
  o 
  m 
  o 
  g 
  o 
  m 
  p 
  h 
  u 
  s 
  spinosus 
  Calvert, 
  N. 
  Y. 
  ent. 
  soc. 
  Jour. 
  5:93 
  

  

  (listed 
  from 
  Karner) 
  

   1897 
  Dromogomphus 
  spinosus 
  Needham, 
  Can. 
  ent. 
  29 
  : 
  186 
  (characters 
  

  

  of 
  the 
  nymph) 
  

  

  1899 
  Dromogomphus 
  spinosus 
  Kellicott, 
  Odon. 
  Ohio, 
  p. 
  71 
  (description) 
  

  

  1900 
  Dromogomphus 
  spinosus 
  Williamson, 
  Dragon 
  flies 
  Ind. 
  p. 
  296 
  

  

  (description) 
  

  

  This 
  species 
  has 
  been 
  taken 
  sparingly 
  and 
  in 
  a 
  few 
  places 
  within 
  the 
  

   state, 
  but 
  it 
  is 
  probable 
  that 
  it 
  frequents 
  the 
  borders 
  of 
  most 
  of 
  the 
  larger 
  

  

  