﻿WASPS 
  OF 
  GENUS 
  TRIMORUS 
  — 
  FOUTS 
  117 
  

  

  transverse 
  depression 
  just 
  before 
  the 
  middle; 
  second 
  tergite 
  1.3 
  times 
  

   as 
  wide 
  as 
  long, 
  1,55 
  times 
  as 
  long 
  as 
  the 
  petiole, 
  with 
  a 
  number 
  of 
  

   longitudinal 
  ridges, 
  those 
  near 
  the 
  middle 
  shorter 
  than 
  those 
  next 
  to 
  

   them 
  on 
  either 
  side, 
  extending 
  from 
  base 
  to 
  middle 
  of 
  segment; 
  the 
  

   longer 
  ridges 
  reach 
  the 
  posterior 
  third; 
  all 
  these 
  ridges 
  diverge 
  from 
  

   one 
  another, 
  that 
  is, 
  the 
  intervening 
  grooves 
  widen 
  posteriorly; 
  thu'd 
  

   tergite 
  1.4 
  times 
  as 
  wide 
  as 
  long, 
  tw^ce 
  as 
  long 
  as 
  the 
  second, 
  wavy- 
  

   striate 
  and 
  reticulate 
  on 
  basal 
  half, 
  the 
  markings 
  very 
  faint 
  near 
  the 
  

   middle 
  of 
  the 
  segment; 
  third 
  tergite 
  otherwise 
  smooth, 
  without 
  sculp- 
  

   ture, 
  without 
  pubescence 
  except 
  a 
  few 
  white 
  hairs 
  laterally; 
  black; 
  

   legs 
  dark 
  brown 
  to 
  black, 
  the 
  knees 
  and 
  anterior 
  tibiae 
  apically 
  

   brownish. 
  

  

  Type 
  locality. 
  — 
  HoUyburn, 
  British 
  Columbia. 
  

  

  r?/pe.— 
  U.S.N.M. 
  No. 
  57787. 
  

  

  One 
  specimen 
  collected 
  June 
  11, 
  1928, 
  by 
  Oscar 
  Whittaker. 
  

  

  (25) 
  TRIMORUS 
  MINUTUS, 
  new 
  species 
  

  

  Female. 
  — 
  Length 
  1.14 
  mm. 
  Head 
  about 
  twice 
  as 
  wide 
  as 
  long, 
  

   as 
  wide 
  as 
  the 
  thorax, 
  indistinctly 
  narrower 
  than 
  the 
  abdomen; 
  frons, 
  

   except 
  a 
  small 
  spot 
  on 
  each 
  side 
  at 
  malar 
  space 
  which 
  is 
  impressed 
  

   reticulate, 
  and 
  vertex, 
  polished, 
  without 
  sculpture; 
  frons 
  with 
  a 
  

   very 
  fine 
  median 
  carina 
  its 
  entire 
  length 
  ; 
  occiput 
  impressed-reticulate 
  ; 
  

   eyes 
  pubescent; 
  thorax 
  about 
  as 
  wide 
  as 
  long; 
  mesonotum 
  shining, 
  

   with 
  a 
  fine 
  indistinct 
  reticulate 
  sculpture; 
  parapsidal 
  grooves 
  com- 
  

   plete, 
  just 
  as 
  in 
  improcerus, 
  not 
  finely 
  and 
  sharply 
  indicated 
  as 
  in 
  

   percurrens 
  but 
  easily 
  distinguished 
  nevertheless; 
  scutellum 
  convex, 
  

   reticulate 
  basally, 
  smooth 
  apically, 
  with 
  sparse 
  pubescence 
  laterally; 
  

   metanotal 
  spine 
  moderate 
  in 
  length, 
  acute 
  apically; 
  wings 
  extending 
  

   a 
  little 
  less 
  than 
  one-third 
  the 
  length 
  of 
  the 
  abdomen 
  past 
  the 
  latter's 
  

   apex; 
  abdomen 
  one 
  and 
  one-half 
  times 
  as 
  long 
  as 
  wide, 
  hardly 
  wider 
  

   than 
  the 
  thorax; 
  petiole 
  1.7 
  times 
  as 
  wide 
  as 
  long, 
  with 
  a 
  few 
  deep 
  

   longitudinal 
  grooves 
  dorsally, 
  not 
  elevated 
  anteriorly 
  or 
  depressed 
  

   transversely; 
  second 
  tergite 
  1.5 
  times 
  as 
  wide 
  as 
  long, 
  1.25 
  times 
  as 
  

   long 
  as 
  the 
  petiole, 
  the 
  ridges 
  on 
  basal 
  four-fifths 
  sharp, 
  parallel, 
  the 
  

   median 
  ones 
  bifurcate 
  apically; 
  third 
  tergite 
  1.3 
  times 
  as 
  wide 
  as 
  long, 
  

   2.7 
  times 
  as 
  long 
  as 
  the 
  second, 
  smooth, 
  with 
  extremely 
  faint 
  wavy- 
  

   reticulate 
  sculpture, 
  pubescent 
  laterally; 
  black; 
  antennae 
  dark 
  brown, 
  

   the 
  scape 
  yellowish 
  toward 
  base; 
  wings 
  brownish; 
  legs 
  3^ellowish 
  

   brown, 
  the 
  swollen 
  parts 
  of 
  femora 
  and 
  tibiae 
  darker; 
  petiole 
  and 
  base 
  

   of 
  second 
  segment 
  reddish 
  yellow. 
  

  

  Type 
  locality. 
  — 
  Glen 
  Echo, 
  Aid. 
  

  

  ^2/2)6.— 
  U.S.N.M. 
  No. 
  57788. 
  

  

  Two 
  specimens 
  collected 
  April 
  16 
  and 
  April 
  23, 
  1918, 
  by 
  the 
  author. 
  

   Paratype 
  in 
  Whittaker 
  collection. 
  

  

  