﻿138 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vor,. 
  98 
  

  

  scutellum 
  somewhat 
  less 
  strongly 
  punctate 
  than 
  the 
  mesonotuni; 
  

   spine 
  on 
  mctanotum 
  short, 
  broad 
  basally, 
  acute 
  apically; 
  lateral 
  

   angles 
  of 
  propodcum 
  moderately 
  produced, 
  acute; 
  abdomen 
  broadly 
  

   elliptical, 
  1.1 
  times 
  as 
  wide 
  as 
  the 
  thorax, 
  1.6 
  times 
  as 
  long 
  as 
  wide; 
  

   petiole 
  1.5 
  times 
  as 
  wide 
  as 
  long, 
  with 
  eight 
  or 
  nine 
  longitudinal 
  

   grooves 
  separated 
  by 
  sharp 
  ridges; 
  second 
  tergite 
  1.8 
  times 
  as 
  wide 
  

   as 
  long, 
  1.4 
  times 
  as 
  long 
  as 
  the 
  petiole, 
  with 
  about 
  ten 
  grooves 
  basally, 
  

   these 
  grooves 
  deep 
  anteriorly, 
  becoming 
  wider 
  and 
  shallower 
  posteri- 
  

   orly, 
  separated 
  by 
  sharp 
  ridges; 
  these 
  ridges 
  extend 
  to 
  the 
  apical 
  fourth 
  

   of 
  the 
  segment; 
  the 
  grooves 
  become 
  more 
  and 
  more 
  shallow 
  and 
  

   merge 
  with 
  the 
  smooth 
  area 
  behind; 
  third 
  tegite 
  1.3 
  times 
  as 
  wide 
  as 
  

   long, 
  2.4 
  times 
  as 
  long 
  as 
  the 
  second, 
  with 
  unifomi 
  impressed 
  reticula- 
  

   tion, 
  pubescent 
  only 
  laterally; 
  following 
  tergites 
  with 
  close 
  impressed 
  

   reticulation, 
  with 
  fine 
  scattered 
  punctures; 
  wings 
  faintly 
  brownish, 
  

   extending 
  slightly 
  past 
  the 
  apex 
  of 
  the 
  abdomen; 
  black; 
  trochanters, 
  

   tibiae 
  at 
  extreme 
  bases, 
  and 
  anterior 
  tibiae 
  at 
  apices 
  reddish 
  yellow; 
  

   femora 
  and 
  tibiae 
  otherwise 
  very 
  dark 
  brown; 
  apical 
  joints 
  of 
  tarsi 
  

   brown. 
  

  

  Type 
  locality. 
  — 
  Chilliwack, 
  British 
  Columbia. 
  

  

  7V2>«.— 
  U.S.N.M. 
  No. 
  57809. 
  

  

  Five 
  specimens 
  collected 
  by 
  Oscar 
  Whittaker 
  on 
  September 
  4, 
  6, 
  

   and 
  8, 
  1926, 
  and 
  September 
  9 
  and 
  13, 
  1927. 
  One 
  paratype 
  in 
  Whit- 
  

   taker 
  collection. 
  

  

  (69) 
  TRIMORUS 
  WHITTAKEBI, 
  new 
  species 
  

  

  Female. 
  — 
  Length 
  1.16 
  mm. 
  Head 
  about 
  twice 
  as 
  wide 
  as 
  long, 
  a 
  lit- 
  

   tle 
  wider 
  than 
  the 
  thorax; 
  frons 
  reticulate 
  laterally 
  and 
  above, 
  smooth 
  

   medially, 
  with 
  a 
  median 
  ridge 
  to 
  anterior 
  ocellus, 
  evenly 
  pubescent 
  

   except 
  on 
  the 
  smooth 
  median 
  area; 
  vertex 
  and 
  occiput 
  impressed 
  

   reticulate; 
  thorax 
  as 
  wide 
  as 
  long; 
  mesonotum 
  scaly-reticulate, 
  evenly 
  

   and 
  closely 
  pubescent; 
  parapsidal 
  grooves 
  apparently 
  not 
  present; 
  

   scutellum 
  very 
  closely 
  impressed-reticulate, 
  pubescent; 
  spine 
  on 
  

   metanotum 
  short-acute; 
  lateral 
  angles 
  of 
  propodeum 
  projecting, 
  

   acute; 
  wings 
  extending 
  a 
  little 
  less 
  than 
  a 
  third 
  the 
  length 
  of 
  the 
  

   abdomen 
  past 
  the 
  latter's 
  apex; 
  abdomen 
  1.4 
  times 
  as 
  long 
  as 
  wide, 
  a 
  

   little 
  wider 
  than 
  the 
  head, 
  slightly 
  longer 
  than 
  the 
  head 
  and 
  thorax 
  

   together; 
  petiole 
  twice 
  as 
  wide 
  as 
  long, 
  with 
  about 
  a 
  dozen 
  longi- 
  

   tudinal 
  grooves 
  which 
  very 
  nearly 
  reach 
  the 
  margins 
  of 
  the 
  segment, 
  

   not 
  elevated 
  anteriorly 
  and 
  without 
  a 
  transverse 
  depression; 
  second 
  

   tergite 
  twice 
  as 
  wide 
  as 
  long, 
  twice 
  as 
  long 
  as 
  the 
  petiole, 
  with 
  about 
  

   a 
  dozen 
  longitudinal 
  ridges 
  with 
  deep 
  hitervening 
  grooves; 
  these 
  

   ridges 
  are 
  parallel 
  or 
  diverge 
  slightly 
  from 
  one 
  another 
  posteriorly, 
  

   extending 
  to 
  apical 
  third 
  ; 
  thu'd 
  tergite 
  1 
  .4 
  times 
  as 
  wide 
  as 
  long, 
  im- 
  

   pressed-reticulate, 
  uniformly 
  pubescent, 
  2.7 
  times 
  as 
  long 
  as 
  the 
  

  

  