﻿108 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.98 
  

  

  tending 
  to 
  apex 
  of 
  propodcum; 
  abdomen 
  1.45 
  times 
  as 
  long 
  as 
  wide, 
  

   slightly 
  wider 
  than 
  the 
  head, 
  strongly 
  convex 
  dorsally; 
  petiole 
  about 
  

   twice 
  as 
  wide 
  as 
  long, 
  with 
  numerous 
  longitudinal 
  ridges, 
  with 
  a 
  

   trough-shaped 
  depression 
  across 
  middle; 
  second 
  tergite 
  about 
  twice 
  

   as 
  wide 
  as 
  long, 
  1.6 
  times 
  as 
  long 
  as 
  the 
  petiole, 
  with 
  many 
  parallel 
  

   or 
  diverging 
  longitudinal 
  ridges 
  which 
  extend 
  medially 
  about 
  to 
  

   apical 
  fourth; 
  laterally 
  the 
  ridges 
  are 
  shorter; 
  thu-d 
  tergite 
  1.3 
  times 
  

   as 
  wide 
  as 
  long, 
  uniforndy 
  reticulate 
  except 
  narrowly 
  laterally 
  and 
  

   posteriorly; 
  black; 
  scape 
  dark 
  brown, 
  slightly 
  paler 
  proximad; 
  flagel- 
  

   lum 
  piceous; 
  legs 
  reddish 
  brown, 
  the 
  coxae, 
  femora, 
  and 
  tibiae 
  brown; 
  

   posterior 
  tibiae 
  reddish 
  brown; 
  tarsi 
  yellowish, 
  the 
  last 
  joint 
  of 
  

   each 
  brown. 
  

  

  Type 
  locality. 
  — 
  Hollyburn, 
  British 
  Columbia. 
  

  

  r^/pe.— 
  U.S.N.M. 
  No. 
  57778. 
  

  

  One 
  specimen 
  collected 
  June 
  3, 
  1930, 
  by 
  Oscar 
  Whittaker. 
  

  

  (12) 
  TRIMORUS 
  PUNCTITHORAX, 
  new 
  species 
  

  

  Female. 
  — 
  Length 
  1.5 
  mm. 
  Head 
  about 
  twice 
  as 
  wide 
  as 
  long, 
  a 
  

   little 
  wider 
  than 
  the 
  thorax; 
  frons 
  laterally 
  and 
  above 
  reticulate 
  with 
  

   fine 
  striae 
  and 
  numerous 
  minute 
  punctures 
  ; 
  frons 
  with 
  a 
  carina 
  to 
  the 
  

   anterior 
  ocellus, 
  medially 
  polished, 
  with 
  a 
  few 
  wavy 
  aciculae; 
  except 
  

   for 
  this 
  median 
  smooth 
  area 
  the 
  frons 
  is 
  closely 
  and 
  evenly 
  pubescent; 
  

   vertex 
  and 
  occiput 
  with 
  dense 
  impressed 
  reticulation; 
  thorax 
  about 
  as 
  

   wide 
  as 
  long; 
  mesonotum 
  very 
  densely 
  and 
  finely 
  punctate, 
  closely 
  and 
  

   evenly 
  pubescent; 
  parapsidal 
  grooves 
  briefly 
  indicated 
  posteriorly; 
  

   scutellum 
  with 
  close 
  impressed 
  reticulation, 
  pubescent 
  over 
  its 
  entire 
  

   surface; 
  metanotal 
  spine 
  short, 
  acute, 
  not 
  reaching 
  past 
  the 
  apex 
  of 
  the 
  

   metanotum; 
  wings 
  narrow, 
  not 
  quite 
  reaching 
  to 
  the 
  apex 
  of 
  the 
  pro- 
  

   podeum; 
  abdomen 
  about 
  one 
  and 
  two-thirds 
  times 
  as 
  long 
  as 
  wide, 
  

   about 
  one 
  and 
  one-fourth 
  times 
  as 
  long 
  as 
  the 
  head 
  and 
  thorax 
  com- 
  

   bined, 
  about 
  one 
  and 
  one-tenth 
  times 
  as 
  wide 
  as 
  the 
  head; 
  petiole 
  

   about 
  one 
  and 
  one-half 
  times 
  as 
  wide 
  as 
  long, 
  with 
  eight 
  of 
  nine 
  longi- 
  

   tudinal 
  grooves, 
  slightly 
  depressed 
  across 
  the 
  middle; 
  second 
  tergite 
  

   1.6 
  times 
  as 
  wide 
  as 
  long, 
  one 
  and 
  one-half 
  times 
  as 
  long 
  as 
  the 
  petiole, 
  

   with 
  ridges 
  and 
  grooves 
  reaching 
  apical 
  one-fourth 
  ; 
  the 
  grooves 
  widen 
  

   apically 
  and 
  those 
  toward 
  the 
  middle 
  of 
  the 
  segment 
  have 
  each 
  a 
  small 
  

   longitudinal 
  ridge 
  medially 
  at 
  the 
  apex 
  ; 
  posterior 
  fourth 
  of 
  the 
  second 
  

   tergite 
  smooth, 
  without 
  sculpture; 
  following 
  segments 
  evenly 
  and 
  

   moderately 
  thickly 
  pubescent; 
  third 
  tergite 
  1.4 
  times 
  as 
  wide 
  as 
  long, 
  

   2.4 
  times 
  as 
  long 
  as 
  the 
  second, 
  entirely 
  finely 
  reticulate 
  except 
  narrowly 
  

   along 
  the 
  posterior 
  margin; 
  black; 
  legs 
  dark 
  brown, 
  the 
  knees, 
  tibiae 
  

   apically, 
  posterior 
  tibiae 
  entirely, 
  and 
  each 
  metatarsus 
  yellowish 
  brown 
  

   to 
  rather 
  dark 
  reddish 
  brown; 
  coxae 
  black. 
  

  

  Type 
  locality. 
  — 
  ChilliAvack, 
  British 
  Columbia. 
  

  

  TV^e.— 
  U.S.N.Al. 
  No. 
  57779. 
  

  

  One 
  specimen 
  collected 
  September 
  18, 
  1926, 
  by 
  Oscar 
  Whittaker. 
  

  

  