﻿548 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  Legs 
  : 
  C0X8B 
  and 
  trochanters 
  yellow, 
  the 
  former 
  obscured 
  ; 
  remainder 
  

   of 
  legs 
  gone. 
  

  

  Wings 
  strongly 
  tinged 
  with 
  yellow; 
  costal 
  cell 
  light 
  yellowish- 
  

   brown; 
  extreme 
  base 
  of 
  cell 
  second 
  Rj 
  and 
  tip 
  of 
  cell 
  first 
  Ri 
  brown; 
  

   a 
  rounded 
  white 
  mark 
  in 
  cell 
  first 
  lij 
  just 
  above 
  the 
  fork 
  of 
  R2+3; 
  

   most 
  of 
  cell 
  second 
  Ri 
  white; 
  tips 
  of 
  cells 
  R3 
  and 
  R5 
  very 
  pale, 
  sub- 
  

   hyaline; 
  veins 
  yellow, 
  C, 
  Sc 
  and 
  R 
  more 
  brownish. 
  Venation: 
  Rs 
  

   very 
  long, 
  almost 
  straight 
  at 
  ite 
  origin 
  and 
  about 
  in 
  a 
  line 
  with 
  R2+5 
  

   and 
  R,; 
  R2+3 
  very 
  short, 
  shorter 
  than 
  the 
  cross 
  vein 
  r-m; 
  Rj 
  strongly 
  

   arcuated 
  at 
  its 
  origin; 
  M1+2 
  beyond 
  cross 
  vein 
  m 
  shorter 
  than 
  cither 
  

   Ml 
  or 
  M2 
  alone; 
  basal 
  deflection 
  of 
  Cui 
  beyond 
  the 
  middle 
  of 
  cell 
  

   first 
  M2; 
  second 
  anal 
  elongate 
  sinuated. 
  

  

  Abdomen: 
  tergura 
  light 
  yellow, 
  especially 
  along 
  the 
  lateral 
  mar- 
  

   gins 
  of 
  the 
  sclerites; 
  along 
  the 
  mid-dorsal 
  line, 
  darker, 
  brown. 
  

   Hypopygium 
  reddish-yellow. 
  The 
  genitalia 
  suggest 
  L. 
  adusta 
  Osten 
  

   Sacken 
  and 
  its 
  allies, 
  and 
  also 
  Polymera, 
  consisting 
  of 
  elongate, 
  

   cylindrical 
  pleural 
  pieces 
  set 
  with 
  long 
  pale 
  hairs 
  and 
  bearing 
  apically 
  

   appendages 
  which 
  are 
  dark 
  colored, 
  chitinized 
  and 
  denticulate 
  on 
  

   their 
  outer 
  face. 
  

  

  "Chile" 
  (E. 
  C. 
  Reed, 
  coU.). 
  

  

  Specimen 
  in 
  U. 
  S. 
  National 
  Museum 
  collection. 
  

  

  EXPLANATION 
  OF 
  THE 
  PLATES. 
  

   Plate 
  65. 
  

  

  Fig. 
  1. 
  Hypopygium 
  of 
  Polymera 
  obscura. 
  

  

  2. 
  Wing 
  of 
  Polymera 
  superbn. 
  

  

  3. 
  Wing 
  of 
  Polymera 
  hirticornis. 
  

  

  4. 
  Wing 
  of 
  Polymera 
  thoracica. 
  

  

  5. 
  Wing 
  of 
  Polymera 
  inornata. 
  

  

  6. 
  Wing 
  of 
  Polymera 
  grisea. 
  

  

  7. 
  Wing 
  of 
  Polymera 
  conjuncta. 
  

  

  8. 
  Wing 
  of 
  Cryptolabis 
  tropicalis. 
  

  

  9. 
  Wing 
  of 
  Sacandaga 
  parva. 
  

  

  10. 
  Wing 
  of 
  Mongoma 
  longifusa. 
  

  

  11. 
  Wing 
  of 
  Mongoma 
  extensa. 
  

  

  12. 
  Wing 
  of 
  Molophilus 
  thaumastopodus 
  . 
  

  

  13. 
  Wing 
  of 
  Mongoma 
  niveitarsis. 
  

  

  Plate 
  66. 
  

   Fig. 
  14. 
  Wing 
  of 
  Gonomyia 
  puer. 
  

  

  15. 
  Wing 
  of 
  Gonomyia 
  unicolor. 
  

  

  16. 
  Wing 
  of 
  Polymera 
  niveitarsis. 
  

  

  17. 
  Wing 
  of 
  Polymera 
  pleuralis. 
  

  

  18. 
  Wing 
  of 
  Polymera 
  obscura. 
  

  

  19. 
  Wing 
  of 
  Limnophila 
  nacrea. 
  

  

  20. 
  Wing 
  of 
  Erioptera 
  immaculata. 
  

  

  21. 
  Wing 
  of 
  Limnophila 
  lentoides. 
  

  

  22. 
  Wing 
  of 
  Mongoma 
  disjuncta. 
  

  

  23. 
  Wing 
  of 
  Gnophomyia 
  subhyalina. 
  

  

  