﻿56 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.67 
  

  

  the 
  body. 
  23-segmented 
  : 
  the 
  first 
  flagellar 
  segment 
  three 
  times 
  as 
  

   long 
  as 
  thick, 
  all 
  the 
  following 
  at 
  least 
  twice 
  as 
  long 
  as 
  thick; 
  face 
  

   very 
  faintly 
  punctate, 
  shining; 
  frons 
  minutely 
  reticulately 
  punc- 
  

   tate; 
  thorax 
  robust, 
  smooth 
  and 
  polished; 
  parapsidal 
  grooves 
  very 
  

   sparsely 
  hairy 
  anteriorly, 
  more 
  closely 
  so 
  posteriorly; 
  propodeum 
  

   smooth 
  and 
  polished 
  with 
  an 
  exceedingly 
  short 
  stub 
  of 
  a 
  median 
  

   ridge 
  at 
  apex 
  ; 
  stigma 
  very 
  long 
  ; 
  veins 
  slender 
  ; 
  radius 
  arising 
  much 
  

   before 
  middle 
  of 
  stigma 
  and 
  going 
  to 
  extreme 
  apex 
  of 
  wing 
  ; 
  first 
  ab- 
  

   scissa 
  of 
  radius 
  long; 
  second 
  abscissa 
  hardly 
  twice 
  the 
  first; 
  the 
  

   third 
  as 
  long 
  as 
  the 
  first 
  and 
  second 
  combined 
  ; 
  abdomen 
  broad-oval 
  ; 
  

   chitinized 
  plate 
  of 
  first 
  tergite 
  finely 
  rugulose 
  apically; 
  second 
  ter- 
  

   gite 
  delicately 
  ruguloso-striate, 
  with 
  a 
  more 
  or 
  less 
  distinct 
  fine 
  

   median 
  raised 
  line 
  down 
  the 
  middle 
  ; 
  suturiform 
  articulation 
  slightly 
  

   arcuate 
  medially 
  ,and 
  curving 
  forward 
  strongly 
  at 
  the 
  sides, 
  weakly 
  

   foveolate; 
  third 
  and 
  fourth 
  tergites 
  finely 
  granular, 
  smooth 
  later- 
  

   ally, 
  the 
  fourth 
  with 
  a 
  fine 
  impressed 
  transverse 
  line 
  at 
  the 
  base: 
  

   fifth 
  tergite 
  very 
  faintly 
  punctate, 
  strongly 
  shining; 
  ovipositor 
  

   sheaths 
  as 
  long 
  as 
  the 
  dorsum 
  of 
  abdomen 
  beyond 
  first 
  tergite. 
  

   Head 
  piceous, 
  the 
  face 
  yellowish 
  ferruginous; 
  thorax 
  dark 
  red- 
  

   dish 
  brown 
  ; 
  legs, 
  including 
  all 
  coxae, 
  yellow 
  ; 
  wings 
  perfectly 
  clear 
  

   hyaline; 
  abdomen 
  yellowish 
  ferruginous. 
  

   "Type.— 
  Cat. 
  No. 
  27144, 
  U.S.N.M. 
  

  

  Type-locality. 
  — 
  Las 
  Vegas, 
  New 
  Mexico. 
  

  

  Host. 
  — 
  Pityophthorus, 
  species. 
  

  

  Described 
  from 
  two 
  female 
  specimens 
  reared 
  by 
  Barber 
  and 
  

   Schwarz 
  from 
  the 
  above 
  host, 
  which 
  was 
  infesting 
  twigs 
  of 
  Pinus 
  

   edulis. 
  

  

  41. 
  MICROBRACON 
  LAEMOSACCI, 
  new 
  species 
  

  

  Closely 
  related 
  to 
  the 
  preceding 
  species, 
  as 
  indicated 
  in 
  the 
  key. 
  

   but 
  differing 
  especially 
  in 
  the 
  characters 
  there 
  noted. 
  

  

  Female. 
  — 
  Length, 
  3 
  mm.; 
  head 
  thick 
  antero-posteriorly 
  at 
  insertion 
  

   of 
  antennae; 
  face 
  receding; 
  transverse 
  diameter 
  of 
  opening 
  between 
  

   clypeus 
  and 
  mandibles 
  fully 
  twice 
  as 
  long 
  as 
  the 
  malar 
  space, 
  and 
  

   much 
  longer 
  than 
  the 
  distance 
  from 
  the 
  opening 
  to 
  the 
  eyes; 
  eyes 
  

   broad-oval; 
  postocellar 
  line 
  slightly 
  longer 
  than 
  the 
  diameter 
  of 
  

   an 
  ocellus; 
  ocell-ocular 
  line 
  twice 
  the 
  diameter 
  of 
  an 
  ocellus; 
  an- 
  

   tennae 
  slender, 
  a 
  little 
  shorter 
  than 
  the 
  body, 
  27-segmented 
  ; 
  the 
  first 
  

   and 
  second 
  flagellar 
  segments 
  nearly 
  three 
  times 
  as 
  long 
  as 
  thick, 
  

   all 
  the 
  following 
  at 
  least 
  twice 
  as 
  long 
  as 
  thick; 
  thorax 
  compact, 
  

   smooth, 
  and 
  polished; 
  parapsidal 
  grooves 
  thickly 
  hairy 
  anteriorly 
  

   as 
  well 
  as 
  posteriorly; 
  propodeum 
  polished, 
  with 
  a 
  short 
  stub 
  of 
  a 
  

   median 
  longitudinal 
  ridge 
  at 
  apex; 
  stigma 
  long; 
  radius 
  arising 
  

   much 
  before 
  middle 
  of 
  stigma 
  and 
  going 
  practically 
  to 
  the 
  apex 
  of 
  

  

  