﻿516 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  medial 
  ground 
  band 
  very 
  narrow, 
  far 
  removed 
  from 
  the 
  tuberculate 
  

   pits. 
  Tuberculate 
  pits 
  separated 
  from 
  one 
  another 
  by 
  a 
  distance 
  

   equal 
  to 
  one 
  and 
  one-half 
  the 
  diameter 
  of 
  either; 
  pseudosuture 
  

   elongate, 
  rather 
  deep; 
  pits 
  and 
  pseudosuture 
  shiny 
  black. 
  The 
  space 
  

   in 
  front 
  of 
  the 
  pseudosuture 
  pale, 
  whitish. 
  Scutum 
  dull 
  gray 
  with 
  

   two 
  brown 
  stripes 
  on 
  either 
  side 
  of 
  the 
  middle 
  liflc, 
  continuations 
  of 
  

   the 
  prsescutal 
  stripes; 
  scutellum 
  pale, 
  grayer 
  anteriorly, 
  a 
  large 
  

   oval 
  brown 
  medial 
  spot; 
  post-notunr 
  dull 
  gray 
  with 
  a 
  narrow 
  black 
  

   medial 
  Ime. 
  Pleural 
  stripes 
  rather 
  indistmct; 
  ground 
  color 
  whitish 
  

   with 
  two 
  oblique 
  brownish 
  bands, 
  one 
  along 
  the 
  dorsal 
  edge 
  of 
  the 
  

   epipleural 
  sclerites, 
  the 
  second 
  along 
  the 
  ventral 
  edge 
  of 
  these 
  sclerites; 
  

   sternum 
  gray 
  with 
  two 
  indistmct 
  brown 
  bands. 
  Halteres 
  pale, 
  knob 
  

   darker. 
  Legs 
  — 
  Fore: 
  brownish 
  yellow; 
  femora, 
  apical 
  half 
  dark 
  

   brown 
  with 
  a 
  subapical 
  band 
  of 
  pale 
  yellow 
  hairs; 
  tibia 
  dark 
  basally, 
  

   remainder 
  of 
  tibia 
  and 
  three 
  basal 
  tarsal 
  segments 
  whitish; 
  two 
  

   apical 
  tarsal 
  segments 
  brown. 
  Middle 
  : 
  femora, 
  dull 
  yellow 
  with 
  an 
  

   apical 
  brown 
  band; 
  tibia 
  and 
  tarsi 
  as 
  in 
  the 
  foreleg. 
  Hind: 
  femora, 
  

   apical 
  half 
  dark 
  brown 
  with 
  a 
  very 
  narrow 
  yellow 
  subapical 
  band; 
  

   tarsi 
  and 
  tibiae 
  as 
  in 
  the 
  foreleg. 
  

  

  Wing: 
  cells 
  A, 
  Cu, 
  M 
  and 
  caudal 
  half 
  of 
  R 
  almost 
  hyaline; 
  cells 
  C, 
  

   Sc 
  and 
  cephalic 
  half 
  of 
  R 
  brown 
  with 
  large 
  spots; 
  one 
  at 
  the 
  base, 
  

   one 
  at 
  the 
  origin 
  of 
  Rs, 
  one 
  at 
  Scj, 
  one 
  at 
  cross 
  vein 
  r 
  and 
  fork 
  of 
  

   R2+3; 
  apices 
  of 
  cells 
  R3, 
  R5, 
  Mi, 
  brown; 
  also 
  narrow 
  margins 
  along 
  

   most 
  of 
  the 
  veins 
  in 
  the 
  caudal 
  half 
  of 
  the 
  wing. 
  (See 
  fig. 
  25.) 
  

  

  Abdomen: 
  brown, 
  apices 
  of 
  the 
  tergal 
  segments 
  paler. 
  

  

  Male. 
  — 
  Similar 
  to 
  the 
  female 
  but 
  has 
  a 
  narrow 
  brown 
  Ime 
  running 
  

   along 
  the 
  middle 
  of 
  the 
  mesothoracic 
  praescutum, 
  making 
  the 
  thoracic 
  

   dorsum 
  tri-vittate; 
  this 
  stripe 
  ends 
  far 
  before 
  the 
  suture; 
  the 
  brown 
  on 
  

   the 
  wings 
  is 
  less 
  extensive, 
  prodacing 
  a 
  very 
  pale 
  picture. 
  Legs 
  

   rather 
  darker, 
  especially 
  the 
  middle 
  femora. 
  

  

  Habitat. 
  — 
  Holotype. 
  — 
  Female, 
  Salina 
  Cruz, 
  Oaxaca, 
  Mexico 
  (Fredk. 
  

   Knab). 
  Allotype. 
  — 
  Male, 
  Vera 
  Cruz, 
  Vera 
  Cruz, 
  Mexico, 
  December 
  14, 
  

   1907 
  (F. 
  Knab). 
  Paratype.—Sex 
  (?), 
  Acapulco, 
  Mexico 
  (F. 
  Knab). 
  

  

  Type. 
  — 
  In 
  U. 
  S. 
  National 
  Museum 
  collection 
  (No. 
  14924). 
  

  

  ERIOPTERA 
  (MESOCYPHONA) 
  EISENI, 
  new 
  species. 
  

  

  Vertex 
  variegated; 
  mesonotum 
  light 
  brownish-yellow; 
  pleural 
  

   stripes 
  rather 
  distinct; 
  wings 
  brownish, 
  the 
  spots 
  only 
  on 
  the 
  veins, 
  

   few 
  in 
  number 
  (about 
  16) 
  and 
  subequal. 
  

  

  Male.— 
  Length, 
  3.3-3.6 
  mm; 
  wing, 
  3.1-3.2 
  mm. 
  

  

  Female. 
  — 
  Length, 
  3-3.3 
  mm; 
  wing, 
  3.2-3.4 
  mm. 
  

  

  Head: 
  rostrum 
  and 
  palpi 
  dark 
  brown; 
  anteimse 
  pale 
  yellow 
  

   throughout; 
  outer 
  margin 
  of 
  the 
  front 
  and 
  vertex 
  along 
  the 
  inner 
  

   side 
  of 
  the 
  eye, 
  light 
  yellow; 
  rest 
  of 
  the 
  head 
  brown. 
  

  

  Thorax: 
  pronotum, 
  scutum 
  light 
  yellow; 
  scutellum 
  pale 
  whitish. 
  

   Mesonotum: 
  praescutum 
  light 
  brownish-yellow, 
  extreme 
  lateral 
  mar- 
  

  

  