﻿47^ 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Protborax 
  with 
  a 
  transverse 
  dorsal 
  flattened 
  area, 
  which 
  is 
  fringed 
  

   with 
  stiff 
  hairs 
  ; 
  legs 
  slender 
  and 
  not 
  very 
  long, 
  adapted, 
  not 
  for 
  running 
  

   as 
  stated 
  by 
  Hagen 
  [loc. 
  cit. 
  p. 
  288), 
  but 
  for 
  raking 
  the 
  sand 
  aside; 
  

   femora 
  and 
  tibiae 
  with 
  dorsal 
  and 
  ventral 
  rows 
  of 
  long 
  hairs, 
  the 
  ventral 
  

   row 
  on 
  the 
  tibiae 
  graduating 
  into 
  spines 
  at 
  the 
  tip, 
  these 
  becoming 
  

   arranged 
  in 
  a 
  double 
  row 
  on 
  the 
  ventral 
  side 
  of 
  the 
  tarsal 
  segments 
  ; 
  

   tarsi 
  three-jointed; 
  wings 
  a 
  little 
  divergent 
  on 
  the 
  two 
  sides, 
  when 
  

   grown, 
  reaching 
  the 
  fourth 
  abdominal 
  segment. 
  

  

  Abdomen, 
  subcylindric, 
  arcuately 
  upcurved 
  toward 
  the 
  tip; 
  no 
  dorsal 
  

   hooks 
  ; 
  lateral 
  appendages 
  less 
  than 
  one 
  fourth 
  as 
  long 
  as 
  superior 
  and 
  

   inferiors; 
  the 
  transverse 
  apical 
  rings 
  on 
  the 
  abdominal 
  segments 
  are 
  

   somewhat 
  remote 
  from 
  the 
  apices 
  of 
  the 
  segments 
  and 
  bear 
  rows 
  of 
  very 
  

   stiff 
  hairs, 
  which 
  are 
  mcurved 
  at 
  the 
  tip 
  and 
  serve 
  to 
  hold 
  a 
  layer 
  of 
  

   sand, 
  dirt, 
  etc. 
  about 
  the 
  body. 
  

  

  The 
  two 
  species 
  of 
  nymphs 
  described 
  below 
  may 
  be 
  easily 
  separated 
  

   as 
  follows. 
  

  

  a 
  Lateral 
  margins 
  of 
  abdomiual 
  segments 
  8 
  and 
  9 
  sharp, 
  ending 
  posteriorly 
  iu 
  

  

  stout 
  triangular, 
  conspicuous 
  lateral 
  spines 
  diastatops 
  (raised) 
  

  

  aa 
  Lateral 
  margins 
  of 
  abdominal 
  segments 
  8 
  and 
  9 
  hardly 
  acute, 
  at 
  their 
  pos- 
  

   terior 
  ends 
  a 
  pair 
  of 
  minute, 
  slender, 
  cylindric, 
  pointed 
  spines, 
  that 
  are 
  

  

  shorter 
  than 
  the 
  hairs 
  among 
  which 
  they 
  are 
  hidden 
  maculatus 
  

  

  (supposition) 
  

  

  Of 
  the 
  eggs 
  of 
  Cordulegaster 
  I 
  know 
  nothing. 
  Field 
  observa- 
  

   tions 
  are 
  much 
  needed 
  on 
  the 
  matter 
  of 
  oviposition 
  to 
  observe 
  whether 
  

   they 
  are 
  dropped 
  into 
  the 
  water, 
  attached 
  to 
  supports, 
  or 
  inserted 
  into 
  

   plant 
  tissues, 
  and, 
  if 
  the 
  latter, 
  how 
  the 
  long, 
  imperfect 
  ovipositor 
  of 
  the 
  

   female 
  is 
  used. 
  

  

  Cordulegaster 
  maculatus 
  Selys 
  

  

  1854 
  Cordulegaster 
  maculatus 
  Selys, 
  Acad. 
  Belg. 
  (2) 
  Bui. 
  21 
  : 
  105 
  

   1861 
  Cordulegaster 
  maculatus 
  Hagen, 
  Synopsis 
  Neur. 
  N. 
  Am. 
  p. 
  115 
  

   1875 
  C 
  o 
  r 
  dule 
  g 
  as 
  t 
  e 
  r 
  m 
  a 
  c 
  ula 
  t 
  u 
  s 
  Hagen, 
  Bost. 
  soc. 
  nat. 
  hist. 
  Proc. 
  

  

  18 
  : 
  50 
  (bibliography 
  and 
  distribution) 
  

   1893 
  Cordulegaster 
  maculatus 
  Calvert, 
  Am. 
  ent. 
  soc. 
  Trans. 
  20 
  : 
  246 
  

  

  (description) 
  

  

  This 
  species 
  was 
  not 
  uncommon 
  at 
  Saranac 
  Inn. 
  It 
  was 
  to 
  be 
  seen 
  

   during 
  the 
  greater 
  part 
  of 
  the 
  summer 
  on 
  sunshiny 
  days 
  coursing 
  up 
  and 
  

   down 
  Little 
  Clear 
  creek 
  on 
  the 
  hatchery 
  grounds: 
  it 
  was 
  observed 
  

   nowhere 
  else. 
  It 
  has 
  not 
  been 
  reported 
  from 
  New 
  York 
  state 
  hitherto. 
  

  

  The 
  nymphs 
  referred 
  to 
  this 
  species 
  by 
  supposition 
  (none 
  of 
  them 
  

   being 
  reared) 
  were 
  common 
  in 
  the 
  sandy 
  bed 
  of 
  Little 
  Clear 
  creek, 
  in 
  

   the 
  places 
  over 
  which 
  the 
  images 
  were 
  observed 
  flying; 
  but 
  one 
  species 
  

   was 
  seen 
  ; 
  that 
  is 
  the 
  reason 
  for 
  referring 
  the 
  nymphs 
  to 
  this 
  species. 
  A 
  

   number 
  of 
  exuviae 
  were 
  found 
  on 
  the 
  edges 
  of 
  the 
  fish 
  ponds 
  within 
  a 
  

   few 
  days 
  after 
  our 
  arrival, 
  but 
  none 
  appeared 
  later, 
  and, 
  though 
  nymphs 
  

   apparently 
  fully 
  grown 
  were 
  repeatedly 
  taken 
  and 
  a 
  good 
  many 
  of 
  them- 
  

   kept 
  in 
  our 
  cages 
  through 
  the 
  remainder 
  of 
  the 
  season, 
  none 
  of 
  them 
  trans- 
  

  

  