﻿534 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  merits 
  light 
  yellow, 
  tliis 
  annulated 
  effect 
  most 
  noticeable 
  on 
  segments 
  

   4-8; 
  a 
  group 
  of 
  wide, 
  outspread 
  hairs 
  extending 
  from 
  each 
  node. 
  

   Front, 
  vertex 
  and 
  occiput 
  grayish-brown, 
  a 
  black 
  spot 
  in 
  the 
  center 
  

   of 
  the 
  A^ertex. 
  

  

  Thorax: 
  dark 
  brown; 
  pseudo-sutural 
  spots, 
  deep, 
  prominent, 
  black; 
  

   pleurse, 
  brownish-black; 
  the 
  sternum 
  nearly 
  as 
  dark; 
  halteres 
  light 
  

   brown, 
  the 
  knob 
  darker. 
  Legs: 
  coxoe 
  and 
  trochanters 
  light 
  yellow- 
  

   isli, 
  basis 
  of 
  former, 
  brown; 
  femora 
  brown, 
  more 
  yelloAvish 
  basally, 
  

   subapically 
  somewhat 
  darker 
  brown; 
  tibiae 
  brown, 
  tip 
  dark; 
  tarsus, 
  

   segment 
  1 
  light 
  brown, 
  tip 
  whitish; 
  segments 
  2-4 
  white; 
  5 
  more 
  

   brownish. 
  

  

  Wings: 
  slightly 
  tinged 
  with 
  gray. 
  Venation: 
  Sc 
  rather 
  long, 
  Sc^ 
  

   nearer 
  to 
  the 
  fork 
  of 
  R3+3 
  than 
  fork 
  of 
  Rs; 
  Ri 
  beyond 
  r 
  about 
  one- 
  

   third 
  the 
  distance 
  of 
  Rj 
  between 
  Sc^ 
  and 
  r. 
  Basal 
  deflection 
  of 
  R4+5 
  

   very 
  long, 
  twice 
  as 
  long 
  as 
  r-m; 
  Mg-fCui 
  about 
  equal 
  to 
  M3. 
  Basal 
  

   deflection 
  of 
  Cuj 
  beyond 
  the 
  fork 
  of 
  M. 
  (See 
  fig. 
  4.) 
  

  

  Abdomen 
  dark 
  brown. 
  

  

  Habitat.— 
  Holotype. 
  — 
  Male,Igarape 
  Assu, 
  Par6, 
  Brazil, 
  February 
  7, 
  

   1912 
  (Parish). 
  

  

  Type. 
  — 
  In 
  Cornell 
  University 
  collection. 
  

  

  Differs 
  from 
  alhiiarsis 
  Williston 
  in 
  the 
  darker 
  coloration 
  throughout; 
  

   Sc 
  longer, 
  extending 
  much 
  beyond 
  the 
  fork 
  of 
  Rs; 
  basal 
  deflection 
  of 
  

   Cui 
  beyond 
  the 
  fork 
  of 
  M, 
  not 
  at 
  it, 
  etc. 
  It 
  comes 
  close 
  to 
  fused 
  

   Wiedemann, 
  but 
  differs 
  in 
  several 
  details 
  of 
  coloration, 
  and, 
  if 
  Wiede- 
  

   manii's 
  figure 
  represents 
  true 
  fusca, 
  as 
  I 
  suppose 
  it 
  does, 
  in 
  vena- 
  

   tional 
  and 
  antennal 
  characters. 
  

  

  POLYMERA 
  INORNATA, 
  new 
  species. 
  

  

  Size, 
  small; 
  flagellar 
  segments 
  of 
  the 
  antennas 
  bi-nodose; 
  wing 
  with 
  

   cell 
  Ml 
  present; 
  R^ 
  beyond 
  r 
  equal 
  to 
  Rj 
  between 
  Scg 
  and 
  r. 
  

  

  Male. 
  — 
  Length, 
  4.4 
  mm.; 
  wing, 
  4.8 
  mm.; 
  antenna 
  (about), 
  6.5 
  mm. 
  

   Head: 
  rostrum 
  and 
  palpi 
  light 
  brown; 
  front, 
  vertex, 
  and 
  occiput 
  

   dark 
  brown, 
  bloom 
  destroyed 
  by 
  mucilage; 
  antennal 
  segments 
  dark 
  

   brown, 
  somewhat 
  paler 
  at 
  the 
  base 
  and 
  apex 
  of 
  each 
  segment, 
  but 
  

   not 
  producing 
  an 
  annulated 
  effect. 
  

  

  Thorax: 
  notum 
  light 
  chestnut-brown; 
  pleurse 
  similar 
  but 
  paler, 
  

   without 
  any 
  distinct 
  darker 
  pleural 
  stripe, 
  sternal 
  region 
  duU 
  yellow. 
  

   Halteres 
  very 
  pale 
  yeUow, 
  the 
  knob 
  light 
  brown. 
  Legs: 
  fore 
  and 
  

   middle, 
  only, 
  remain; 
  light 
  yeUowish-brown, 
  the 
  coxae 
  and 
  trochan- 
  

   ters 
  being 
  more 
  yellow; 
  it 
  is 
  very 
  probable 
  that 
  the 
  posterior 
  tarsi 
  

   are 
  whitish. 
  

  

  Wings 
  uniformly 
  tinged 
  with 
  yeUow; 
  veins 
  brownish-yellow. 
  

   Venation: 
  Sc 
  long, 
  ending 
  about 
  opposite 
  to 
  the 
  fork 
  of 
  R2+3; 
  cross- 
  

   vein 
  r 
  far 
  removed 
  from 
  the 
  tip 
  of 
  Rj, 
  so 
  that 
  Rj 
  beyond 
  this 
  cross 
  

   vein 
  is 
  equal 
  to 
  that 
  section 
  of 
  Ri 
  between 
  Scg 
  and 
  cross-vein 
  r; 
  

  

  