﻿akt. 
  8 
  REVISION 
  OF 
  THE 
  GENUS 
  MICROBRACON 
  MUESEBECK 
  81 
  

  

  polished; 
  first 
  abscissa 
  of 
  radius 
  about 
  as 
  long 
  as 
  recurrent 
  vein; 
  

   the 
  second 
  hardly 
  twice 
  as 
  long 
  as 
  the 
  first; 
  the 
  third 
  scarcely 
  as 
  long 
  

   as 
  the 
  first 
  and 
  second 
  combined; 
  second 
  intercubitus 
  longer 
  than 
  the 
  

   recurrent 
  vein; 
  chitinized 
  plate 
  of 
  first 
  abdominal 
  tergite 
  broadening 
  

   rather 
  gradually 
  posteriorly, 
  rugulose 
  apically 
  and 
  laterally 
  ; 
  second, 
  

   third 
  and 
  fourth 
  tergites 
  granular, 
  opaque; 
  fifth 
  tergite 
  very 
  finely 
  

   granular, 
  shining; 
  frons, 
  vertex 
  and 
  occiput 
  blackish 
  except 
  along 
  

   the 
  eyes; 
  face 
  with 
  a 
  large 
  quadrate 
  black 
  spot; 
  thorax 
  entirely 
  

   black 
  ; 
  wings 
  very 
  faintly 
  dusky 
  ; 
  legs, 
  including 
  all 
  coxae 
  yellow, 
  the 
  

   posterior 
  tibiae 
  and 
  tarsi 
  more 
  or 
  less 
  dusky 
  ; 
  first 
  abdominal 
  tergite 
  

   and 
  a 
  median 
  spot 
  on 
  the 
  second, 
  black; 
  the 
  apical 
  tergites 
  some- 
  

   what 
  fuscous. 
  

  

  Distribution. 
  — 
  Lansing, 
  Michigan. 
  

  

  Host. 
  — 
  " 
  Leaf-miner 
  in 
  basswood." 
  

  

  Known 
  only 
  from 
  the 
  unique 
  type. 
  

  

  SPECIES 
  OF 
  MICROBRACON 
  NOT 
  INCLUDED 
  IN 
  THE 
  KEY 
  

   MICROBRACON 
  RUFOMARGINATUS 
  (Ashmead) 
  

   Brucon 
  rufomarginatus 
  Ashmead, 
  Canad. 
  Ent., 
  vol. 
  25, 
  1S93, 
  p. 
  08. 
  

  

  Type. 
  — 
  I 
  have 
  been 
  unable 
  to 
  locate 
  the 
  type 
  of 
  this 
  species. 
  

   Judged 
  by 
  the 
  original 
  description 
  it 
  is 
  very 
  similar 
  to, 
  possibly 
  

   identical 
  with, 
  politiventris 
  (Gtishman) 
  ; 
  if 
  the 
  type 
  is 
  found 
  and 
  

   proves 
  to 
  be 
  politiventris, 
  it 
  will 
  be 
  necessary 
  to 
  place 
  the 
  latter 
  name 
  

   in 
  synonymy. 
  

  

  Type-locality. 
  — 
  Morgantown, 
  West 
  Virginia. 
  

  

  Host. 
  — 
  Unknown. 
  

  

  MICROBRACON 
  PICEICEPS 
  (Viereck) 
  

  

  Bracon 
  piceiceps 
  Viereck, 
  Trans. 
  Kans. 
  Acad. 
  Sci., 
  vol. 
  19, 
  1905, 
  p. 
  268. 
  

  

  Type. 
  — 
  In 
  the 
  University 
  of 
  Kansas. 
  

  

  It 
  has 
  been 
  impossible 
  to 
  place 
  this 
  species 
  on 
  the 
  basis 
  of 
  the 
  

   original 
  description 
  and 
  notes 
  by 
  Mr. 
  Gahan 
  who 
  has 
  examined 
  the 
  

   type, 
  principally 
  because 
  the 
  type 
  is 
  a 
  male 
  specimen 
  and 
  males 
  of 
  

   the 
  group 
  to 
  which 
  this 
  species 
  belongs 
  are 
  exceedingly 
  difficult 
  to 
  

   identify. 
  It 
  appears 
  to 
  come 
  nearest 
  to 
  mellitor. 
  

  

  Type-locality. 
  — 
  Douglas 
  County, 
  Kansas. 
  

  

  Host. 
  — 
  Unknown. 
  

  

  SAY'S 
  SPECIES 
  OF 
  THE 
  GENUS 
  BRACON 
  

  

  When 
  attempting 
  to 
  determine 
  which 
  of 
  Say's 
  species, 
  described 
  in 
  

   the 
  genus 
  Bracon, 
  belong 
  to 
  Microbracon, 
  it 
  became 
  necessary 
  to 
  re- 
  

   view 
  thoroughly 
  all 
  of 
  the 
  species 
  placed 
  in 
  Bracon 
  by 
  Say; 
  and 
  it 
  

   appears 
  desirable 
  to 
  include 
  in 
  this 
  paper 
  a 
  list 
  of 
  these 
  species 
  with 
  

   the 
  names 
  of 
  the 
  genera 
  to 
  which 
  they 
  seem 
  to 
  be 
  referable. 
  Some 
  

   12053—25 
  6 
  

  

  