﻿454 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  The 
  variety 
  differs 
  from 
  the 
  typical 
  d 
  es 
  criptus, 
  so 
  far 
  as 
  observed, 
  

   only 
  in 
  the 
  form 
  of 
  the 
  appendages 
  of 
  the 
  male 
  abdomen. 
  These 
  

   differences 
  are 
  shown 
  in 
  the 
  accompanying 
  figures, 
  wherein 
  it 
  will 
  be 
  seen 
  

   there 
  is 
  a 
  radical 
  difference 
  in 
  the 
  form 
  of 
  the 
  anterior 
  hamule 
  of 
  the 
  

   male, 
  and 
  that 
  in 
  the 
  variety 
  the 
  superior 
  appendage 
  is 
  shorter, 
  less 
  acute 
  

   at 
  apex 
  and 
  with 
  the 
  inferior 
  tooth 
  directed 
  more 
  inward 
  than 
  in 
  the 
  typical 
  

   descriptus. 
  

  

  The 
  variety 
  was 
  first 
  received 
  from 
  Franconia 
  N. 
  H. 
  among 
  some 
  

   specimens 
  sent 
  me 
  by 
  Mrs 
  Annie 
  Trumbull 
  Slosson. 
  It 
  was 
  not 
  

   uncommon 
  about 
  Saranac 
  Inn. 
  A 
  few 
  were 
  observed 
  foraging 
  about 
  the 
  

   Otisville 
  road, 
  and 
  a 
  few 
  others 
  were 
  seen 
  resting 
  on 
  the 
  bare 
  sand 
  of 
  

   the 
  railroad 
  embankment 
  at 
  the 
  outlet 
  of 
  Little 
  Clear 
  pond. 
  Oviposi- 
  

   tion 
  was 
  not 
  observed. 
  

  

  Nymph. 
  (PI. 
  i8, 
  fig. 
  4) 
  Total 
  length 
  32 
  mm; 
  abdomen 
  20 
  mm; 
  hind 
  

   femur 
  5.6 
  mm; 
  width 
  of 
  head 
  5 
  mm, 
  of 
  abdomen 
  7 
  mm. 
  

  

  Body 
  depressed, 
  lanceolate, 
  hairy 
  on 
  all 
  lateral 
  margins, 
  tapering 
  

   beyond 
  the 
  middle 
  of 
  the 
  rather 
  pointed 
  abdomen. 
  Colors 
  generally 
  

   entirely 
  obscured 
  by 
  adherent 
  dirt, 
  but 
  after 
  molting 
  there 
  is 
  often 
  seen 
  

   a 
  darker 
  band 
  across 
  the 
  base 
  of 
  each 
  abdominal 
  segment. 
  

  

  Third 
  segment 
  of 
  the 
  antenna 
  depressed 
  and 
  somewhat 
  widened 
  api- 
  

   cally. 
  

  

  Labium 
  with 
  the 
  mentum 
  one 
  third 
  longer 
  than 
  wide 
  ; 
  median 
  lobe 
  

   nearly 
  straight 
  on 
  its 
  front 
  border, 
  fringed 
  with 
  flat 
  hairs, 
  but 
  unarmed 
  ; 
  

   lateral 
  lobe 
  regularly 
  incurved 
  with 
  a 
  long 
  terminal 
  hook, 
  exceeding 
  the 
  

   six 
  to 
  eight 
  teeth 
  before 
  it 
  on 
  the 
  inner 
  margin. 
  

  

  Lateral 
  spines 
  on 
  abdominal 
  segments 
  6-9, 
  sometimes 
  obscured 
  by 
  

   tufts 
  of 
  hairs 
  on 
  the 
  sixth 
  segment, 
  those 
  of 
  the 
  ninth 
  segment 
  short, 
  

   hardly 
  surpassing 
  the 
  base 
  of 
  the 
  loth 
  segment, 
  straight, 
  but 
  not 
  closely 
  

   appressed. 
  loth 
  segment 
  half 
  as 
  long 
  as 
  the 
  ninth, 
  and 
  a 
  little 
  shorter 
  

   than 
  the 
  appendages; 
  lateral 
  appendages 
  a 
  sixth 
  to 
  a 
  seventh 
  shorter 
  

   than 
  the 
  others. 
  Dorsal 
  hooks 
  represented 
  by 
  low, 
  inconspicuous 
  rudi- 
  

   ments 
  on 
  segments 
  3-9, 
  with 
  traces 
  of 
  the 
  median 
  impressed 
  line 
  on 
  the 
  

   anterior 
  end 
  of 
  the 
  middle 
  segments. 
  

  

  Nymphs 
  of 
  this 
  species 
  were 
  taken 
  at 
  two 
  places 
  : 
  Colby 
  pond, 
  just 
  

   west 
  of 
  the 
  town 
  of 
  Saranac 
  Lake, 
  and 
  Bone 
  pond. 
  They 
  were 
  associ- 
  

   ated 
  with 
  and 
  greatly 
  outnumbered 
  by 
  G. 
  s 
  p 
  i 
  c 
  a 
  t 
  u 
  s 
  in 
  both 
  places. 
  

  

  Gomphus 
  sordidus 
  Hagen 
  

  

  1854 
  Gomphus 
  sordidus 
  Hagen, 
  Acad. 
  Belg. 
  (2) 
  Bill. 
  21 
  : 
  54 
  

   1861 
  Gomphus 
  sordidus 
  Hagen, 
  Synopsis 
  Neur. 
  N. 
  Am. 
  p. 
  106 
  

   1875 
  Gomphus 
  lividus 
  Hagen, 
  Bost. 
  soc. 
  nat. 
  hist. 
  Proc. 
  18 
  : 
  45 
  (listed) 
  

   1893 
  Gomphus 
  minutus 
  Calvert, 
  Am. 
  ent. 
  soc. 
  Trans. 
  20 
  : 
  244 
  ( 
  5 
  only) 
  

   1899 
  Gomphus 
  lividus 
  Kellieott, 
  Odon. 
  Ohio, 
  p. 
  66 
  (description 
  and 
  

   figures) 
  

  

  