﻿468 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  grown 
  nymphs 
  from 
  Moline 
  111. 
  Two 
  imagos 
  taken 
  by 
  Prof. 
  R. 
  H. 
  

   Pettit 
  at 
  Baldwinsville, 
  Onondaga 
  co., 
  constitute 
  the 
  only 
  record 
  of 
  the 
  

   species 
  for 
  this 
  state. 
  

  

  Nymph. 
  (The 
  largest 
  I 
  have 
  before 
  me, 
  not 
  grown, 
  as 
  shown 
  by 
  the 
  

   shortness 
  of 
  the 
  wing 
  cases.) 
  Measures 
  24 
  mm; 
  abdomen 
  16 
  mm; 
  hind 
  

   femur 
  4 
  mm; 
  width 
  of 
  head 
  5.5 
  mm, 
  of 
  abdomen 
  6 
  mm. 
  

  

  Color 
  blackish, 
  labium 
  and 
  tarsi 
  yellowish; 
  body 
  rough 
  granulate, 
  but 
  

   not 
  hairy, 
  with 
  paired 
  tubercles 
  obtuse 
  above 
  the 
  base 
  of 
  the 
  antennae, 
  

   and 
  on 
  the 
  middle 
  of 
  the 
  vertex, 
  and 
  on 
  the 
  middle 
  of 
  the 
  superolateral 
  

   ridge 
  that 
  extends 
  from 
  the 
  rear 
  of 
  the 
  eyes 
  to 
  the 
  hind 
  angles 
  of 
  the 
  

   head; 
  a 
  pair 
  also 
  on 
  the 
  superolateral 
  angles 
  of 
  the 
  prothorax; 
  and 
  the 
  

   usual 
  two 
  pairs 
  above 
  the 
  bases 
  of 
  the 
  coxae, 
  the 
  anterior 
  a 
  Httle 
  longer 
  

   and 
  stouter, 
  but 
  both 
  directed 
  anteriorly 
  ; 
  three 
  or 
  four 
  pairs 
  above 
  the 
  

   middle 
  and 
  hind 
  coxae, 
  running 
  down 
  into 
  a 
  ridge 
  which 
  extends 
  on 
  

   these 
  coxae; 
  a 
  dorsal, 
  tuberculate, 
  superior 
  ridge 
  on 
  all 
  the 
  femora; 
  

   dorsal 
  hooks 
  represented 
  on 
  all 
  the 
  segments 
  of 
  the 
  abdomen, 
  becoming 
  

   prominent 
  and 
  pointed 
  on 
  segments 
  6-9; 
  lateral 
  spines 
  on 
  segments 
  5-9, 
  

   increasing 
  in 
  length 
  posteriorly, 
  those 
  of 
  the 
  ninth 
  segment, 
  two 
  thirds 
  as 
  

   long 
  as 
  the 
  loth 
  segment; 
  appendages 
  more 
  than 
  twice 
  as 
  long 
  as 
  the 
  

   loth 
  segment, 
  superior 
  and 
  inferiors 
  of 
  equal 
  length, 
  laterals 
  one 
  

   fourth 
  to 
  one 
  fifth 
  as 
  long 
  as 
  the 
  others, 
  superior, 
  obtuse 
  at 
  tip, 
  inferiors 
  

   finely 
  denticulate 
  exteriorly. 
  

  

  Head 
  considerably 
  narrowed 
  behind 
  the 
  eyes, 
  and 
  with 
  a 
  deep, 
  quad- 
  

   rangular 
  excavation 
  of 
  the 
  hind 
  margin; 
  eyes 
  with 
  a 
  very 
  long 
  anterior 
  

   border, 
  and 
  a 
  long 
  pointed 
  hind 
  angle 
  lying 
  on 
  the 
  vertex; 
  labium 
  with 
  

   the 
  cleft 
  of 
  the 
  median 
  lobe 
  somewhat 
  v-shaped, 
  not 
  closed; 
  lateral 
  lobe 
  

   truncate 
  on 
  apex, 
  with 
  about 
  18 
  denticles 
  on 
  inner 
  margin. 
  

  

  EPIAESCHNA 
  

  

  There 
  is 
  a 
  single 
  North 
  American 
  species. 
  

  

  Epiaeschna 
  heros 
  Fabricius 
  

  

  1798 
  Aeshna 
  heros 
  Fabricius, 
  Eut. 
  syst. 
  Suppl. 
  p. 
  285 
  

  

  1839 
  Aeshna 
  multicincta 
  Say, 
  Acad. 
  nat. 
  sci. 
  Phil. 
  Jour. 
  8:9 
  

  

  1861Aeschria 
  heros 
  Hageu, 
  Synopsis 
  Neur. 
  N. 
  Am. 
  p. 
  128 
  

  

  1869 
  Aeschna 
  heros 
  Harris, 
  Erit. 
  correspondence, 
  p. 
  326 
  (notes) 
  

  

  1862Aeschna 
  heros 
  Walsh, 
  Acad. 
  nat. 
  sci. 
  Phil. 
  Proc. 
  p. 
  397 
  (notes) 
  

  

  1875 
  Aeschna 
  heros 
  Hagen, 
  Bost. 
  soc. 
  nat. 
  hist. 
  Proc. 
  18:36 
  (bibliography 
  

  

  and 
  distribution) 
  

   1881 
  Epiaeschna 
  heros 
  (uymph) 
  Cabot, 
  Mus. 
  comp. 
  zool., 
  Mem. 
  8:30, 
  

  

  39, 
  pi. 
  1, 
  fig. 
  3 
  

   1893 
  Epiaeschna 
  heros 
  Calvert, 
  Am. 
  ent. 
  soc. 
  Trans. 
  20 
  : 
  246-47 
  (de- 
  

   scription) 
  

   1895-97 
  Epiaeschna 
  heros 
  Calvert, 
  N. 
  Y. 
  ent. 
  soc. 
  Jour. 
  345 
  ; 
  5 
  : 
  93 
  

   (listed 
  from 
  Dobbs 
  Ferry, 
  New 
  York, 
  Ithaca, 
  Albauy 
  and 
  Buffalo) 
  

  

  1899 
  Epiaeschna 
  heros 
  Kellicott, 
  Odon. 
  Ohio, 
  p. 
  81 
  (description) 
  

  

  1900 
  Epiaeschna 
  heros 
  Williamson, 
  Dragon 
  flies 
  Ind. 
  p. 
  302 
  (descrip- 
  

  

  tion) 
  

  

  This, 
  our 
  largest 
  dragon 
  fly, 
  is 
  widely 
  distributed 
  throughout 
  the 
  state, 
  

   and, 
  for 
  that 
  matter, 
  throughout 
  the 
  whole 
  eastern 
  United 
  States. 
  Its 
  

  

  