﻿AQUATIC 
  INSECTS 
  IN 
  THE 
  ADIRONDACKS 
  577 
  

  

  Head 
  depressed, 
  in 
  outline 
  conic 
  as 
  seen 
  from 
  above; 
  mouth 
  parts 
  in- 
  

   serted 
  in 
  a 
  rectangular 
  notch 
  at 
  its 
  anterior 
  end, 
  the 
  hind 
  margin 
  of 
  the 
  

   notch 
  straight 
  or 
  nearly 
  so 
  ; 
  from 
  the 
  hind 
  angles 
  of 
  the 
  buccal 
  notch 
  

   there 
  extends 
  posteriorly 
  on 
  the 
  top 
  of 
  the 
  head 
  a 
  pair 
  of 
  grooves, 
  parallel 
  

   or 
  a 
  little 
  convergent 
  for 
  two 
  thirds 
  of 
  their 
  length, 
  where 
  connected 
  by 
  

   a 
  transverse 
  groove, 
  thereafter 
  divergent 
  toward 
  the 
  hind 
  angles 
  of 
  the 
  

   head 
  ; 
  the 
  depth 
  of 
  the 
  buccal 
  notch 
  equals 
  one 
  fourth 
  of 
  the 
  length 
  of 
  

   the 
  head 
  : 
  the 
  sides 
  of 
  the 
  head 
  are 
  rugulose. 
  The 
  head 
  bears 
  setigerous 
  

   punctures 
  as 
  follows 
  : 
  a 
  pair 
  on 
  the 
  hind 
  angles 
  of 
  the 
  buccal 
  notch, 
  a 
  

   pair 
  posterior 
  to 
  these 
  between 
  the 
  grooves, 
  a 
  postocular 
  pair, 
  and 
  a 
  sub- 
  

   ocular 
  pair, 
  and 
  two 
  pairs 
  still 
  lower 
  on 
  the 
  sides 
  of 
  the 
  head. 
  

  

  The 
  anterior 
  third 
  of 
  the 
  thoracic 
  segments 
  (which 
  become 
  successively 
  

   wider 
  from 
  the 
  front) 
  is 
  closely 
  beset 
  with 
  whitish 
  recurved 
  hairs, 
  which 
  

   disappear 
  on 
  the 
  foremost 
  abdominal 
  segments 
  ; 
  there 
  are 
  a 
  tew 
  long 
  

   straight 
  hairs 
  at 
  the 
  lateral 
  margins 
  of 
  all 
  the 
  body 
  segments 
  excepting 
  the 
  

   the 
  last, 
  which 
  bears 
  on 
  its 
  lateral 
  margins 
  a 
  line 
  of 
  pubescence. 
  Hairs 
  

   of 
  caudal 
  circlet 
  plumose 
  their 
  whole 
  length, 
  yellowish 
  with 
  a 
  blackish 
  

   tinge 
  just 
  beyond 
  the 
  base. 
  

  

  This 
  larva 
  differs 
  from 
  that 
  of 
  S 
  t 
  r. 
  norma 
  Wied. 
  as 
  figured 
  and 
  

   described 
  by 
  Hart^ 
  farther, 
  in 
  that 
  the 
  prothorax 
  is 
  longer 
  than 
  meso 
  or 
  

   metathorax, 
  the 
  anal 
  groove 
  on 
  the 
  ventral 
  side 
  of 
  the 
  caudal 
  segment 
  is 
  

   closed 
  and 
  obsolete 
  for 
  the 
  greater 
  part 
  of 
  its 
  length, 
  only 
  the 
  T-shaped 
  

   anterior 
  third 
  of 
  it 
  remaining 
  ; 
  there 
  are 
  no 
  paired 
  markings 
  beside 
  it, 
  and 
  

   there 
  are 
  no 
  grooves 
  on 
  the 
  ventral 
  side 
  of 
  the 
  two 
  preceding 
  segments. 
  

  

  Stratiomyia 
  seems 
  to 
  differ 
  as 
  a 
  larva 
  from 
  Odontomyia, 
  in 
  

   the 
  squarely 
  cut 
  hinder 
  margin 
  of 
  the 
  buccal 
  cleft, 
  in 
  the 
  absence 
  of 
  ven- 
  

   tral 
  hooks 
  from 
  the 
  apices 
  of 
  the 
  penultimate 
  and 
  antepenultimate 
  seg- 
  

   ments 
  as 
  well 
  as 
  in 
  the 
  greater 
  elongation 
  of 
  the 
  last 
  segment 
  indicated 
  

   by 
  Hart. 
  

  

  A 
  single 
  larva 
  was 
  obtained 
  from 
  the 
  surface 
  of 
  Little 
  Clear 
  creek 
  back 
  

   of 
  the 
  hatchery 
  building 
  July 
  27, 
  1900. 
  It 
  was 
  an 
  old 
  larva, 
  perhaps 
  in 
  

   transformation 
  to 
  puparium. 
  A 
  younger 
  larva 
  would 
  probably 
  have 
  shown 
  

   something 
  more 
  of 
  color 
  pattern 
  ; 
  structural 
  characters, 
  however, 
  should 
  

   be 
  as 
  described. 
  

  

  During 
  the 
  last 
  fortnight 
  of 
  our 
  session 
  a 
  few 
  specimens 
  of 
  a 
  minute 
  

   soldier 
  fly 
  were 
  picked 
  from 
  the 
  hatchery 
  ceiling, 
  where 
  at 
  first 
  they 
  were 
  

   mistaken 
  for 
  Simulium, 
  till 
  a 
  more 
  careful 
  glance 
  discovered 
  their 
  

   rotundity 
  of 
  outlines. 
  These 
  proving 
  to 
  be 
  new 
  to 
  science, 
  D. 
  W. 
  Co- 
  

   quillett 
  has, 
  at 
  our 
  request, 
  prepared 
  the 
  descriptions 
  given 
  on 
  p. 
  585. 
  

  

  Sepedon 
  fuscipennis 
  Loew 
  

  

  Plate 
  U, 
  fig. 
  1-3 
  

  

  1859 
  Sepedon 
  fuscipennis 
  Loew, 
  Wiener 
  ent. 
  mouatsclir. 
  3:299 
  

   1862 
  Sepedon 
  fuscipennis 
  Loew, 
  Monographs 
  Dipt. 
  N. 
  Am. 
  1 
  : 
  124 
  

   1878 
  Sepedon 
  fuscipennis 
  Osten-Sacken, 
  Cat. 
  Dipt. 
  N. 
  Am. 
  p. 
  178 
  

   (listed) 
  

  

  This 
  species 
  is 
  reported 
  in 
  Osten-Sacken's 
  catalogue 
  from 
  the 
  middle 
  

   states. 
  There 
  are 
  specimens 
  of 
  it 
  in 
  the 
  Museum 
  of 
  comparative 
  zoology 
  

  

  mi. 
  lab. 
  nat. 
  hist. 
  Bui. 
  4:249-52, 
  pi. 
  14, 
  fig. 
  57. 
  

  

  