﻿120 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.98 
  

  

  the 
  length 
  of 
  the 
  abdomen 
  past 
  the 
  latter's 
  apex; 
  thorax 
  a 
  httle 
  

   longer 
  than 
  wide 
  ; 
  abdomen 
  about 
  one 
  and 
  three-fourths 
  times 
  as 
  long 
  

   as 
  wide, 
  convex 
  dorsally; 
  petiole 
  about 
  as 
  long 
  as 
  wide, 
  with 
  a 
  number 
  

   of 
  longitudinal 
  grooves 
  its 
  entire 
  length, 
  with 
  a 
  transverse 
  depression 
  

   medially; 
  second 
  tergite 
  1.2 
  times 
  as 
  wide 
  as 
  long, 
  1.25 
  times 
  as 
  long 
  as 
  

   the 
  petiole, 
  with 
  a 
  number 
  of 
  diverging 
  longitudinal 
  ridges 
  on 
  basal 
  

   two-thirds; 
  third 
  tergite 
  not 
  quite 
  1.3 
  times 
  as 
  wide 
  as 
  long, 
  2.2 
  times 
  

   as 
  long 
  as 
  the 
  second, 
  smooth, 
  without 
  sculpture, 
  with 
  the 
  pubescence 
  

   very 
  fine, 
  present 
  only 
  laterally; 
  black; 
  wings 
  faint 
  brownish; 
  legs 
  

   dark 
  brown, 
  the 
  anterior 
  tibiae 
  at 
  apices, 
  other 
  tibiae 
  proximally, 
  and 
  

   all 
  tarsi 
  yellowish. 
  

  

  Type 
  locality. 
  — 
  Chilliwack, 
  British 
  Columbia. 
  

  

  TVt)^.— 
  U.S.N.M. 
  No. 
  57791. 
  

  

  One 
  specimen 
  collected 
  September 
  24, 
  1926, 
  by 
  Oscar 
  Whittaker. 
  

  

  (30) 
  TRIMORUS 
  NGTABILIS, 
  new 
  species 
  

  

  Female. 
  — 
  Length 
  1.1 
  mm. 
  Head 
  as 
  wide 
  as 
  the 
  thorax; 
  frons 
  striate 
  

   below, 
  without 
  sculpture 
  otherwise 
  except 
  a 
  delicate 
  carina 
  to 
  anterior 
  

   ocellus; 
  in 
  front 
  of 
  the 
  ocellus 
  this 
  carina 
  is 
  extremely 
  fine; 
  thorax 
  

   about 
  as 
  wide 
  as 
  long, 
  as 
  wide 
  as 
  the 
  abdomen; 
  mesonotum 
  with 
  

   sculpture 
  similar 
  to 
  but 
  stronger 
  than 
  that 
  in 
  improcerus 
  ; 
  scutellum 
  

   polished, 
  Mdthout 
  pubescence, 
  with 
  a 
  few^ 
  small 
  punctures 
  anteriorly; 
  

   metanotal 
  spine 
  very 
  short, 
  acute; 
  posterior 
  angles 
  of 
  propodeum 
  

   rounded; 
  petiole 
  about 
  one 
  and 
  one-third 
  times 
  as 
  wide 
  as 
  long, 
  with 
  

   longitudinal 
  ridges 
  separated 
  by 
  deep 
  grooves; 
  second 
  tergite 
  one 
  and 
  

   one-third 
  times 
  as 
  wide 
  as 
  and 
  one 
  and 
  two-fifths 
  times 
  as 
  long 
  as 
  the 
  

   petiole, 
  with 
  slightly 
  diverging 
  ridges 
  nearly 
  to 
  apex 
  ; 
  third 
  tergite 
  1 
  .4 
  

   times 
  as 
  w4de 
  as 
  long, 
  2.5 
  times 
  as 
  long 
  as 
  the 
  second, 
  w^ithout 
  sculp- 
  

   ture 
  of 
  any 
  kind; 
  following 
  tergites 
  likewise 
  without 
  sculpture; 
  front 
  

   wing 
  extending 
  about 
  half 
  the 
  length 
  of 
  the 
  abdomen 
  past 
  the 
  latter's 
  

   apex; 
  black; 
  trochanters, 
  and 
  tarsi 
  basally, 
  brownish; 
  wings 
  faintly 
  

   brownish. 
  

  

  Type 
  locality. 
  — 
  Chilliwack, 
  British 
  Columbia. 
  

  

  Type.— 
  U.S. 
  ^.M. 
  No. 
  57792. 
  

  

  Two 
  specimens 
  collected 
  May 
  9 
  and 
  May 
  24, 
  1926, 
  b}^ 
  Oscar 
  Whit- 
  

   taker. 
  

  

  Paratype 
  in 
  Whittaker 
  collection. 
  

  

  (31) 
  TRIxMORUS 
  VARIUS, 
  new 
  species 
  

  

  Male.- 
  — 
  Length 
  2.18 
  mm. 
  Head 
  tmce 
  as 
  wide 
  as 
  long, 
  about 
  as 
  

   wide 
  as 
  the 
  thorax, 
  indistinctly 
  wider 
  than 
  the 
  abdomen 
  ; 
  frons 
  striate 
  

   below 
  and 
  on 
  the 
  sides, 
  the 
  striae 
  continuous 
  with 
  those 
  on 
  the 
  cheeks, 
  

   w4th 
  a 
  median 
  carina 
  to 
  anterior 
  ocellus, 
  and 
  with 
  a 
  few 
  scattered 
  

   punctures 
  above; 
  frons, 
  except 
  as 
  noted, 
  smooth, 
  without 
  sculpture; 
  

   occiput 
  rather 
  finely 
  and 
  irregularly 
  striate; 
  antennae 
  1.45 
  times 
  as 
  

  

  