﻿106 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.08 
  

  

  Female. 
  — 
  Length 
  1.36 
  mm. 
  Head 
  1.8 
  times 
  as 
  wide 
  as 
  long, 
  1.1 
  

   times 
  as 
  wide 
  as 
  the 
  thorax; 
  frons 
  striate 
  below 
  middle 
  of 
  eye 
  except 
  

   for 
  a 
  small 
  area 
  on 
  each 
  side 
  of 
  the 
  median 
  carina, 
  which 
  is 
  polished; 
  

   median 
  carina 
  present 
  on 
  lower 
  half 
  of 
  frons, 
  replaced 
  by 
  a 
  narrow 
  

   groove 
  to 
  anterior 
  ocellus; 
  frons 
  above 
  striae 
  reticulate 
  with 
  small 
  

   dense 
  punctures; 
  vertex 
  densely 
  punctulate; 
  occiput 
  impressed- 
  

   reticulate; 
  thorax 
  about 
  as 
  wide 
  as 
  long, 
  subconvex 
  above; 
  mesono- 
  

   tum 
  uniformly 
  densely 
  punctulate, 
  with 
  parapsidal 
  grooves 
  on 
  pos- 
  

   terior 
  half; 
  scuteUum 
  densely 
  punctulate; 
  metanotal 
  spine 
  short, 
  

   acute; 
  lateral 
  angles 
  of 
  propodeum 
  rather 
  prominent, 
  acute; 
  wings 
  

   not 
  reaching 
  apex 
  of 
  propodeum; 
  abdomen 
  1.5 
  times 
  as 
  long 
  as 
  wide, 
  

   1.1 
  times 
  as 
  wide 
  as 
  the 
  head, 
  strongly 
  convex 
  dorsally; 
  petiole 
  about 
  

   1.6 
  times 
  as 
  wide 
  as 
  long, 
  with 
  ridges 
  to 
  anterior 
  margin, 
  with 
  a 
  

   trough-shaped 
  depression 
  across 
  middle; 
  second 
  tergite 
  about 
  2.2 
  

   times 
  as 
  wide 
  as 
  long, 
  1.45 
  times 
  as 
  long 
  as 
  the 
  petiole, 
  with 
  a 
  few 
  

   widety 
  spaced 
  grooves 
  on 
  anterior 
  half, 
  all 
  the 
  area 
  between 
  these 
  

   grooves 
  and 
  posterior 
  to 
  them 
  except 
  a 
  narrow 
  marginal 
  rim 
  rugose; 
  

   third 
  tergite 
  1.4 
  times 
  as 
  wide 
  as 
  long, 
  2.5 
  times 
  as 
  long 
  as 
  the 
  second, 
  

   uniformly 
  closely 
  punctulate; 
  black; 
  antennae 
  piceous, 
  the 
  scape 
  and 
  

   pedicel 
  reddish 
  brown 
  ; 
  coxae 
  dark 
  brown 
  ; 
  legs 
  yellow. 
  

  

  Type 
  locality. 
  — 
  District 
  of 
  Columbia. 
  

  

  TV^e.— 
  U.S.N.M. 
  No. 
  2246. 
  

  

  Redescribed 
  from 
  one 
  specimen 
  in 
  the 
  author's 
  collection 
  labeled: 
  

   Washington, 
  D. 
  C, 
  April 
  28. 
  It 
  was 
  compared 
  with 
  the 
  type 
  of 
  

   Grijon 
  columbianus 
  in 
  1926. 
  

  

  (8) 
  TRIMORUS 
  SOLITARIUS 
  (Ashmead) 
  

  

  Hyplogyron 
  soUtarius 
  Ashmead, 
  U. 
  S. 
  Nat. 
  Mus. 
  Bull. 
  45, 
  p. 
  205, 
  1893. 
  — 
  Kieffer, 
  

   Das 
  Tierreich, 
  Lief. 
  48, 
  p. 
  215, 
  1926. 
  

  

  Type 
  locality. 
  — 
  Ottawa, 
  Canada. 
  

   TVpe.— 
  U.S.N.M. 
  No. 
  24527. 
  

  

  (9) 
  TRIMORUS 
  NITIDUS. 
  new 
  species 
  

  

  Female. 
  — 
  Length 
  1.09 
  mm. 
  Very 
  closely 
  allied 
  to 
  exilis 
  from 
  which 
  

   it 
  differs 
  as 
  follows: 
  Head 
  1.8 
  times 
  as 
  wide 
  as 
  long, 
  1.2 
  times 
  as 
  wide 
  

   as 
  the 
  thorax, 
  strongly 
  convex 
  in 
  front; 
  a 
  very 
  delicate 
  carina 
  to 
  

   middle 
  of 
  frons 
  ; 
  no 
  striae 
  medially 
  below 
  on 
  the 
  frons 
  ; 
  no 
  reticulation 
  

   along 
  inner 
  eye 
  margin; 
  upper 
  third 
  of 
  frons 
  with 
  some 
  very 
  fine, 
  

   indistinct 
  punctures; 
  pubescence 
  more 
  sparse 
  generally, 
  apparently 
  

   not 
  present 
  on 
  mesonotum 
  and 
  scutellum; 
  second 
  tergite 
  1.7 
  times 
  

   AS 
  long 
  as 
  the 
  petiole; 
  third 
  tergite 
  1.4 
  times 
  as 
  wide 
  as 
  long, 
  2.5 
  

   times 
  as 
  long 
  as 
  the 
  second. 
  

  

  Type 
  locality. 
  — 
  Hollyburn, 
  British 
  Columbia 
  (September 
  3, 
  1929). 
  

  

  Type.— 
  U.S. 
  ^.yi. 
  No. 
  57776. 
  

  

  Paratype 
  locality. 
  — 
  Galiano 
  Island, 
  British 
  Columbia 
  (August 
  1, 
  

   1929). 
  

  

  