﻿498 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol. 
  44. 
  

  

  caudal 
  margin 
  narrowly 
  confluent 
  with 
  the 
  inner 
  branch. 
  The 
  space 
  

   inclosed 
  by 
  the 
  fork 
  of 
  this 
  stripe, 
  at 
  its 
  cephahc 
  end, 
  is 
  glistening, 
  

   mirror-like; 
  boliind 
  this 
  oval, 
  glistening 
  spot, 
  a 
  small 
  cloud 
  of 
  chest- 
  

   nut-brown; 
  a 
  row 
  of 
  long 
  hairs 
  extending 
  along 
  the 
  lateral 
  branch 
  and 
  

   its 
  fork, 
  these 
  hairs 
  dark 
  basally, 
  paler 
  brown 
  at 
  their 
  tips; 
  scutum 
  

   dull 
  blackish-gray; 
  from 
  both 
  forks 
  of 
  the 
  lateral 
  prsescutal 
  stripes 
  

   extends 
  backward 
  a 
  narrow, 
  velvety-black 
  stripe, 
  which 
  meet 
  in 
  a 
  

   triangle 
  at 
  the 
  outer 
  margin 
  of 
  the 
  sclerite. 
  Caudo-lateral 
  margin 
  of 
  

   the 
  sclerite 
  produced 
  into 
  a 
  blunt 
  protuberance 
  ; 
  scutellum 
  and 
  post- 
  

   notum 
  light 
  gray, 
  brown 
  on 
  the 
  lateral 
  margin 
  above 
  the 
  base 
  of 
  the 
  

   halteres. 
  Pleurse 
  dull 
  bluish-gray 
  with 
  indistinct 
  black 
  marks 
  on 
  

   some 
  of 
  the 
  epipleural 
  and 
  sternal 
  sclerites. 
  Halteres 
  light 
  yellowish- 
  

   brown, 
  knob 
  brown. 
  Fore 
  legs, 
  coxae 
  yellow 
  with 
  a 
  shght 
  gray 
  

   bloom 
  on 
  its 
  external 
  face; 
  trochanter 
  yellow; 
  femur 
  narrow 
  at 
  the 
  

   base, 
  soon 
  thickened, 
  clavate, 
  its 
  distal 
  half 
  mth 
  long 
  outspread 
  

   hairs; 
  basal 
  half 
  of 
  the 
  femur 
  pale 
  whitish-yellow 
  with 
  light 
  yellow 
  

   hairs; 
  a 
  post-median 
  brown 
  ring 
  with 
  black 
  haii-s; 
  a 
  broad, 
  bright 
  

   yellow, 
  sub-apical 
  ring, 
  and 
  an 
  apical 
  ring 
  wdth 
  black 
  hairs; 
  tibia 
  

   about 
  uniform 
  in 
  diameter 
  throughout 
  its 
  length, 
  densely 
  clothed 
  

   with 
  long 
  prominent 
  hairs, 
  a 
  broad 
  basal 
  ring 
  dark 
  brown 
  with 
  black 
  

   hairs; 
  a 
  narrower, 
  white, 
  sub-basal 
  ring 
  with 
  white 
  hairs; 
  a 
  veiy 
  

   broad, 
  brown, 
  median 
  portion 
  with 
  black 
  hairs; 
  a 
  broad 
  white 
  sub- 
  

   apical 
  ring 
  with 
  white 
  hairs; 
  a 
  narrow 
  apical 
  ring 
  with 
  black 
  hairs; 
  

   tarsi 
  with 
  prominent 
  hairs, 
  first 
  segment 
  brown 
  with 
  brown 
  hairs 
  

   except 
  at 
  the 
  tip, 
  which 
  is 
  white 
  with 
  white 
  hairs; 
  segments 
  two 
  and 
  

   most 
  of 
  three, 
  white 
  wdth 
  white 
  hairs; 
  tip 
  of 
  three, 
  and 
  four 
  and 
  five, 
  

   brown. 
  Lower 
  aspect 
  of 
  extreme 
  tip 
  of 
  segment 
  one, 
  and 
  extreme 
  

   base 
  of 
  segment 
  two, 
  jet 
  black, 
  denticulate. 
  IVIiddle 
  legs 
  similar 
  to 
  

   fore, 
  but 
  post-median 
  brown 
  band 
  on 
  femur 
  smaller 
  and 
  yellow 
  sub- 
  

   apical 
  ring 
  broader. 
  Hind 
  legs 
  similar 
  to 
  fore, 
  but 
  the 
  hairs 
  even 
  

   more 
  conspicuous 
  and 
  showy; 
  claws 
  long, 
  extended, 
  smooth, 
  or 
  with 
  

   mere 
  indentations 
  on 
  the 
  inner 
  margin. 
  

  

  Wings: 
  hyaline 
  with 
  brown 
  veins; 
  pale 
  brown 
  markings 
  on 
  the 
  

   wing 
  as 
  follows: 
  a 
  large 
  blotch 
  at 
  the 
  origin 
  of 
  Rs, 
  continuing 
  across 
  

   cell 
  R; 
  a 
  large 
  row 
  of 
  markings 
  at 
  the 
  tip 
  of 
  Rj 
  and 
  along 
  the 
  cord; 
  

   along 
  the 
  second 
  deflection 
  of 
  M3 
  and 
  cross- 
  vein 
  m; 
  at 
  tip 
  of 
  Rj, 
  apex 
  

   of 
  the 
  wing, 
  and 
  a 
  faint 
  mark 
  extending 
  from 
  the 
  tip 
  of 
  second 
  anal 
  

   across 
  cells 
  second 
  A 
  and 
  Cu. 
  Venation 
  (see 
  fig. 
  42) 
  : 
  Sc 
  very 
  long 
  

   as 
  in 
  the 
  genus; 
  Sci 
  separated 
  from 
  R^ 
  at 
  the 
  tip 
  by 
  a 
  space 
  equal 
  

   to 
  the 
  cross-vein. 
  r-^n. 
  Rs 
  strongly 
  arcuated 
  at 
  its 
  origin, 
  almost 
  

   •parallel 
  with 
  Rj, 
  in 
  a 
  direct 
  line 
  with 
  R3; 
  Rj 
  leaves 
  R3 
  shortly 
  after 
  

   the 
  fork 
  of 
  Rs 
  and 
  is 
  very 
  strongly 
  curved 
  toward 
  costa 
  at 
  its 
  tip; 
  

   R4+5 
  strongly 
  arcuated 
  on 
  its 
  deflection; 
  basal 
  deflection 
  of 
  M^+j 
  about 
  

   four 
  times 
  as 
  long 
  as 
  the 
  basal 
  deflection 
  of 
  M3; 
  Mg-FCuj 
  longer 
  than 
  

   the 
  basal 
  deflection 
  of 
  Cu^; 
  CU2 
  equal 
  to 
  the 
  basal 
  deflection 
  of 
  Cui- 
  

  

  