﻿116 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.98 
  

  

  scutellum 
  convex, 
  with 
  several 
  small 
  punctures 
  along 
  anterior 
  margin, 
  

   otherwise 
  smooth, 
  without 
  sculpture; 
  metanotal 
  spine 
  triangular, 
  

   broad 
  basally, 
  acute 
  apically, 
  about 
  half 
  as 
  long 
  as 
  the 
  scutellum; 
  

   wings 
  hyaline, 
  extending 
  a 
  little 
  less 
  than 
  one-fourth 
  the 
  length 
  of 
  the 
  

   abdomen 
  past 
  the 
  latter's 
  apex; 
  abdomen 
  1.9 
  times 
  as 
  long 
  as 
  wide, 
  a 
  

   little 
  longer 
  than 
  the 
  head 
  and 
  thorax 
  combined, 
  long-ovate, 
  broadly 
  

   rounded 
  posteriorly; 
  petiole 
  a 
  little 
  longer 
  than 
  wide, 
  with 
  a 
  number 
  

   of 
  longitudinal 
  ridges 
  its 
  entire 
  length, 
  with 
  a 
  transverse 
  trough- 
  

   shaped 
  depression 
  at 
  anterior 
  third; 
  second 
  tergite 
  1.5 
  times 
  as 
  wide 
  

   as 
  long, 
  1.2 
  times 
  as 
  long 
  as 
  the 
  petiole, 
  with 
  numerous 
  parallel 
  or 
  

   slightly 
  diverging 
  ridges 
  extending 
  nearly 
  to 
  the 
  apex; 
  third 
  tergite 
  

   1.4 
  times 
  as 
  wide 
  as 
  long, 
  sparsely 
  pubescent 
  laterally, 
  striate 
  on 
  

   anterior 
  half, 
  the 
  striae 
  becoming 
  finer 
  as 
  they 
  approach 
  the 
  middle; 
  

   third 
  tergite, 
  except 
  as 
  noted, 
  is 
  smooth, 
  VAthout 
  sculpture; 
  third 
  

   sternite 
  with 
  a 
  few 
  small 
  scattered 
  punctures; 
  black; 
  coxae 
  very 
  dark 
  

   brown; 
  legs 
  reddish 
  brown, 
  the 
  femora 
  and 
  tibiae 
  darker. 
  

  

  Type 
  locality. 
  — 
  Brownwood, 
  Tex. 
  

  

  TVpe.— 
  U.S.N.M. 
  No. 
  57786. 
  

  

  One 
  specimen 
  collected 
  in 
  May 
  1924 
  by 
  the 
  author. 
  

  

  (24) 
  TRIMORUS 
  PERCURRENS. 
  new 
  species 
  

  

  Male. 
  — 
  Length 
  1.78 
  mm. 
  Head 
  about 
  twice 
  as 
  wide 
  as 
  long, 
  about 
  

   as 
  wide 
  as 
  the 
  thorax, 
  indistinctly 
  narrower 
  than 
  the 
  abdomen; 
  occi- 
  

   put 
  impressed 
  reticulate; 
  vertex 
  smooth, 
  without 
  sculpture; 
  frons 
  

   mostl}'" 
  smooth, 
  with 
  a 
  rather 
  strong 
  median 
  carina 
  to 
  anterior 
  ocellus; 
  

   a 
  number 
  of 
  smaller 
  carinae 
  from 
  this 
  large 
  one 
  just 
  above 
  the 
  antennae; 
  

   laterally, 
  nearly 
  to 
  the 
  summits 
  of 
  the 
  eyes, 
  the 
  frons 
  is 
  strongly 
  stri- 
  

   ate; 
  antennae 
  filiform, 
  about 
  1.1 
  times 
  as 
  long 
  as 
  the 
  body; 
  scape 
  a 
  

   little 
  wider 
  than 
  the 
  other 
  joints; 
  following 
  joints 
  becoming 
  gradually 
  

   narrower 
  toward 
  the 
  apex 
  of 
  the 
  antenna; 
  scape 
  a 
  little 
  shorter 
  than 
  

   joints 
  3 
  and 
  4 
  together; 
  pedicel 
  about 
  as 
  wide 
  as 
  long; 
  third 
  

   joint 
  about 
  three 
  times 
  as 
  long 
  as 
  wide; 
  following 
  joints 
  subequal 
  in 
  

   length, 
  a 
  little 
  longer 
  than 
  the 
  third, 
  becoming 
  gradually 
  narrower; 
  

   last 
  joint 
  about 
  five 
  times 
  as 
  long 
  as 
  thick; 
  all 
  joints, 
  except 
  the 
  scape, 
  

   thicldy 
  covered 
  with 
  short 
  hairs; 
  thorax 
  1.1 
  times 
  as 
  long 
  as 
  wide, 
  

   convex 
  dorsally 
  and 
  evenly 
  covered 
  above 
  with 
  whitish 
  hairs; 
  meso- 
  

   notum 
  very 
  finely 
  reticulate, 
  more 
  strongly 
  so 
  anteriorly; 
  parapsidal 
  

   grooves 
  complete, 
  narrow, 
  sharply 
  indicated, 
  of 
  equal 
  width 
  through- 
  

   out; 
  scutellum 
  convex, 
  smooth, 
  without 
  sculpture; 
  spine 
  on 
  metano- 
  

   tum 
  moderately 
  long, 
  acute 
  at 
  apex; 
  wings 
  hyaline, 
  extending 
  about 
  a 
  

   third 
  the 
  length 
  of 
  the 
  abdomen 
  past 
  the 
  latter's 
  apex; 
  abdomen 
  1.64 
  

   times 
  as 
  long 
  as 
  wide, 
  a 
  little 
  more 
  than 
  on 
  and 
  one-half 
  times 
  as 
  long 
  

   as 
  the 
  thorax; 
  petiole 
  1.36 
  times 
  as 
  wide 
  as 
  long, 
  with 
  a 
  number 
  of 
  

   longitudinal 
  grooves 
  extending 
  very 
  nearly 
  to 
  the 
  margins, 
  with 
  a 
  

  

  