﻿WASPS 
  OF 
  GENUS 
  TRIMORUS 
  — 
  FOUTS 
  

  

  137 
  

  

  Description 
  based 
  on 
  two 
  specimens 
  in 
  the 
  autlior's 
  collection 
  from 
  

   Virginia 
  and 
  Glen 
  Echo, 
  Md. 
  The 
  specimen 
  from 
  Virginia, 
  collected 
  

   on 
  July 
  13, 
  was 
  compared 
  with 
  the 
  type 
  of 
  Hoplogryon 
  pteridis 
  

   Ashmead 
  and 
  seemed 
  to 
  be 
  conspecific 
  with 
  it. 
  The 
  specimen 
  from 
  

   Glen 
  Echo 
  was 
  compared 
  with 
  Ashmead 
  's 
  type 
  of 
  Prosacantha 
  laevi- 
  

   rons 
  with 
  similar 
  results. 
  Some 
  years 
  ago 
  the 
  author 
  had 
  the 
  

   opportunity 
  of 
  comparing 
  the 
  type 
  of 
  Prosacantha 
  laevifrons 
  with 
  

   the 
  type 
  of 
  Hoplogryon 
  longipennis 
  and 
  found 
  no 
  specific 
  differences 
  

   between 
  them. 
  

  

  This 
  species 
  is 
  known 
  to 
  occur 
  in 
  Ottawa, 
  Canada; 
  Fortress 
  Monroe 
  

   and 
  Arlington, 
  Va.; 
  Glen 
  Echo, 
  Md.; 
  a^nd 
  the 
  District 
  of 
  Columbia. 
  

  

  Type.— 
  V.S.N 
  M. 
  No. 
  24521 
  (longipennis). 
  

  

  (68) 
  TRIMORUS 
  NIGRICOXA. 
  new 
  species 
  

  

  Figures 
  13, 
  15 
  

  

  Female. 
  — 
  Length 
  1.63 
  mm. 
  Head 
  2.2 
  times 
  as 
  wide 
  as 
  long, 
  as 
  

   wide 
  as 
  the 
  thorax 
  ; 
  frons, 
  except 
  an 
  area 
  above 
  the 
  bases 
  of 
  the 
  antennae 
  

   extending 
  as 
  far 
  up 
  as 
  the 
  middle 
  of 
  the 
  eyes, 
  and 
  vertex 
  with 
  very 
  

   close 
  reticulate 
  sculpture, 
  beadlike 
  in 
  appearance; 
  frons 
  with 
  a 
  

  

  Figure 
  15. 
  — 
  Trimorus 
  nigricoxa, 
  new 
  species: 
  Dorsal 
  view 
  of 
  abdomen. 
  Only 
  part 
  of 
  the 
  

   sculpture 
  is 
  shown 
  on 
  the 
  third 
  tergite, 
  the 
  reticulation 
  being 
  continuous. 
  

  

  strong 
  carina 
  from 
  antenna 
  to 
  anterior 
  ocellus; 
  head, 
  except 
  the 
  smooth 
  

   area 
  described 
  above, 
  and 
  dorsal 
  surface 
  of 
  thorax 
  thickly 
  covered 
  

   with 
  short 
  white 
  hairs; 
  scape 
  about 
  one 
  and 
  one-sixth 
  times 
  as 
  long 
  

   as 
  the 
  club, 
  the 
  latter 
  about 
  equal 
  in 
  length 
  to 
  joints 
  2-6 
  inclusive 
  

   combined; 
  mesonotum 
  subopaque, 
  very 
  closely 
  covered 
  with 
  small 
  

   punctures; 
  parapsidal 
  grooves 
  indicated 
  as 
  short 
  broad 
  depressions; 
  

  

  