﻿44 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL. 
  MUSEUM 
  vol.67 
  

  

  the 
  abdomen. 
  Face 
  yellow; 
  vertex 
  and 
  occiput 
  more 
  or 
  less 
  piceous; 
  

   thorax 
  yellow, 
  the 
  pectus 
  and 
  the 
  propodeum 
  usually 
  fuscous 
  or 
  

   blackish; 
  wings 
  perfectly 
  clear 
  hyaline; 
  legs, 
  including 
  all 
  coxae, 
  

   bright 
  yellow, 
  the 
  posterior 
  tibiae 
  at 
  apex 
  and 
  their 
  tarsi 
  more 
  or 
  

   less 
  inf 
  uscated 
  ; 
  abdomen 
  yellow 
  or 
  yellowish-ferruginous 
  with 
  trans- 
  

   verse 
  fuscous 
  or 
  blackish 
  bands 
  on 
  the 
  second, 
  third, 
  and 
  fourth 
  

   tergites. 
  

  

  Distribution. 
  — 
  California. 
  

  

  Hosts. 
  — 
  Euura, 
  species, 
  which 
  forms 
  galls 
  on 
  Salix; 
  and 
  a 
  ceci- 
  

   domyid 
  gall 
  on 
  Mimulus. 
  

  

  Known 
  only 
  from 
  the 
  types 
  of 
  angelesius, 
  cecidomyiae, 
  and 
  euurae. 
  

   A 
  thorough 
  study 
  of 
  the 
  three 
  types 
  clearly 
  shows 
  them 
  to 
  be 
  

   conspecific. 
  

  

  28. 
  MICROBRACON 
  AURIPES 
  (Provancher) 
  

  

  Bracon 
  auripes 
  Provancheu, 
  Addit. 
  faun. 
  Canad. 
  Hymen., 
  1888, 
  p. 
  372. 
  

  

  Type. 
  — 
  Blue 
  label 
  670, 
  yellow 
  label 
  1571, 
  Museum 
  of 
  Public 
  In- 
  

   struction, 
  at 
  Quebec, 
  Canada. 
  

  

  Following 
  are 
  notes 
  made 
  upon 
  an 
  examination 
  of 
  the 
  type 
  : 
  Head 
  

   missing; 
  thorax 
  slender, 
  smooth 
  and 
  polished; 
  radius 
  going 
  practi- 
  

   cally 
  to 
  extreme 
  apex 
  of 
  wing; 
  second 
  abscissa 
  of 
  radius 
  more 
  than 
  

   twice 
  the 
  first, 
  the 
  third 
  longer 
  than 
  first 
  and 
  second 
  combined; 
  re- 
  

   current 
  vein 
  more 
  than 
  twice 
  as 
  long 
  as 
  the 
  portion 
  of 
  cubitus 
  be- 
  

   tween 
  recurrent 
  and 
  first 
  intercubitus 
  ; 
  first 
  abdominal 
  tergite 
  slen- 
  

   der, 
  broadening 
  gradually 
  toward 
  apex, 
  with 
  a 
  finely 
  foveolate 
  

   groove 
  just 
  inside 
  the 
  lateral 
  margins; 
  second 
  tergite 
  longer 
  than 
  

   third, 
  finely 
  ruguloso-striate 
  ; 
  suturiform 
  articulation 
  very 
  fine; 
  re- 
  

   mainder 
  of 
  abdomen 
  highly 
  polished 
  ; 
  ovipositor 
  sheaths 
  very 
  nearly 
  

   as 
  long 
  as 
  the 
  abdomen. 
  Thorax*- 
  black 
  with 
  a 
  large 
  testaceous 
  spot 
  

   behind 
  middle 
  lobe 
  of 
  mesoscutum, 
  and 
  with 
  the 
  propleura 
  testace- 
  

   ous; 
  wings 
  hyaline; 
  legs, 
  including 
  all 
  coxae, 
  wholly 
  yellow; 
  abdo- 
  

   men 
  black 
  above, 
  with 
  narrow 
  yellow 
  lateral 
  margins 
  and 
  with 
  a 
  

   bright 
  j^ellow 
  spot 
  at 
  the 
  apex; 
  venter 
  mostl}?- 
  yellowish. 
  A 
  homo- 
  

   type 
  and 
  other 
  specimens 
  in 
  the 
  same 
  series 
  t>how 
  the 
  species 
  to 
  have 
  

   a 
  black, 
  smooth 
  and 
  polished, 
  evenly 
  rounded 
  head, 
  with 
  very 
  slen- 
  

   der 
  antennae, 
  which 
  have 
  all 
  the 
  flagellar 
  segments 
  more 
  than 
  twice 
  

   as 
  long 
  as 
  thick, 
  and 
  are 
  27 
  to 
  32-segmented. 
  The 
  thorax 
  is 
  some- 
  

   times 
  entirely 
  black. 
  

  

  Distribution. 
  — 
  Ottawa, 
  Canada 
  ; 
  Massachusetts. 
  

  

  Hosts. 
  — 
  Lepidopterous 
  larvae 
  boring 
  in 
  various 
  weeds, 
  such 
  as 
  

   Amaranthus, 
  Ambrosia, 
  Xanthium, 
  etc. 
  

  

  In 
  addition 
  to 
  the 
  type, 
  I 
  have 
  seen 
  a 
  large 
  series 
  of 
  specimens 
  

   reared 
  from 
  such 
  plants 
  as 
  indicated 
  above, 
  at 
  the 
  Corn 
  Borer 
  Labo- 
  

   ratory 
  of 
  the 
  Bureau 
  of 
  Entomology, 
  at 
  Arlington, 
  Massachusetts. 
  

  

  