﻿112 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.98 
  

  

  ately 
  convex 
  above; 
  mesonotiim 
  rather 
  thickly 
  covered 
  with 
  punc- 
  

   tures 
  on 
  anterior 
  half, 
  not 
  rugose 
  in 
  this 
  area; 
  on 
  posterior 
  half 
  

   strongly, 
  more 
  or 
  less 
  irregularly, 
  longitudinally 
  striate; 
  parapsidal 
  

   grooves 
  perceptible 
  but 
  not 
  sharply 
  defined, 
  difficult 
  to 
  distinguish 
  

   posteriorly 
  in 
  the 
  coarse 
  striation; 
  scutellum 
  strongly 
  reticulate, 
  

   high 
  ridges 
  separating 
  the 
  enclosed 
  areas; 
  metanotal 
  spine 
  about 
  

   half 
  as 
  long 
  as 
  the 
  scutoUum, 
  broad 
  and 
  shelf-like; 
  lateral 
  angles 
  of 
  

   propodeum 
  projecting 
  somewhat, 
  subacute 
  apically; 
  abdomen 
  1.6 
  

   times 
  as 
  long 
  as 
  wide, 
  a 
  little 
  wider 
  than 
  the 
  thorax; 
  petiole 
  1.2 
  times 
  

   as 
  wide 
  as 
  long, 
  with 
  about 
  ten 
  straight 
  longitudinal 
  ridges, 
  without 
  

   a 
  transverse 
  depression, 
  but 
  with 
  the 
  anterior 
  rim 
  slightly 
  reflexed; 
  

   second 
  tergite 
  1.7 
  times 
  as 
  wide 
  as 
  long, 
  scarcely 
  longer 
  than 
  the 
  

   petiole, 
  with 
  numerous 
  longitudinal 
  ridges 
  as 
  on 
  the 
  petiole, 
  these 
  

   ridges, 
  however, 
  diverging, 
  lower 
  and 
  more 
  widely 
  separated 
  than 
  on 
  

   the 
  petiole; 
  surfaces 
  between 
  these 
  flat, 
  without 
  sculpture; 
  third 
  

   tergite 
  1.3 
  times 
  as 
  wide 
  as 
  long, 
  with 
  numerous 
  somewhat 
  irregular 
  

   low 
  longitudinal 
  ridges, 
  the 
  intervals 
  between 
  these 
  ridges 
  punctate 
  

   or 
  with 
  an 
  UTegular 
  sculpture 
  ; 
  medially 
  on 
  the 
  third 
  tergite 
  the 
  longi- 
  

   tudinal 
  ridges 
  are 
  obsolescent 
  on 
  posterior 
  half; 
  posterior 
  margin 
  of 
  

   third 
  tergite 
  smooth, 
  without 
  sculpture; 
  third 
  and 
  fourth 
  sternites 
  

   punctate; 
  following 
  tergites 
  with 
  dense, 
  impressed 
  reticulation, 
  the 
  

   fourth 
  and 
  fifth 
  with 
  several 
  transverse 
  rows 
  of 
  large 
  punctures; 
  black; 
  

   scape 
  at 
  extreme 
  base, 
  mandibles, 
  except 
  the 
  teeth, 
  all 
  legs, 
  except 
  

   the 
  coxae, 
  bright 
  yellowish 
  brown; 
  wings 
  tinged 
  with 
  brown. 
  

  

  Male. 
  — 
  Length 
  2.07 
  mm. 
  Similar 
  generally 
  to 
  the 
  female 
  from 
  

   which 
  it 
  differs 
  as 
  follows: 
  Head 
  slightly 
  narrower 
  than 
  the 
  thorax; 
  

   punctures 
  on 
  upper 
  half 
  of 
  frons 
  very 
  few, 
  inconspicuous; 
  carinae 
  

   laterally 
  on 
  the 
  frons 
  more 
  numerous, 
  continuous 
  above 
  with 
  those 
  on 
  

   the 
  cheeks; 
  punctures 
  anteriorly 
  on 
  the 
  mesonotiun 
  smaller 
  than 
  in 
  

   the 
  female, 
  the 
  intervals 
  between 
  them 
  greater 
  than 
  in 
  the 
  female; 
  

   abdomen 
  1.7 
  times 
  as 
  long 
  as 
  wide, 
  oval; 
  second 
  tergite 
  about 
  twice 
  

   as 
  wide 
  as 
  long; 
  third 
  tergite 
  nearly 
  one 
  and 
  one-half 
  times 
  as 
  wide 
  as 
  

   long, 
  a 
  little 
  more 
  strongly 
  sculptured 
  than 
  in 
  the 
  female, 
  the 
  low 
  

   irregular 
  ridges 
  present 
  over 
  the 
  whole 
  surface 
  (except 
  a 
  narrow 
  area 
  

   along 
  the 
  lateral 
  margin); 
  antenna 
  about 
  0.8 
  the 
  length 
  of 
  the 
  entire 
  

   body, 
  filiform, 
  the 
  joints 
  becoming 
  narrower 
  toward 
  the 
  apex; 
  third 
  

   joint 
  a 
  little 
  over 
  twice 
  as 
  long 
  as 
  wide; 
  fourth 
  joint 
  about 
  twice 
  as 
  

   long 
  as 
  wide; 
  last 
  joint 
  about 
  as 
  long 
  as 
  the 
  third, 
  three 
  times 
  as 
  long 
  

   as 
  wide, 
  rounded 
  apically; 
  color 
  as 
  in 
  the 
  female 
  except 
  that 
  the 
  scape 
  

   is 
  not 
  distinctly 
  lighter 
  colored 
  proximad 
  and 
  that 
  the 
  legs, 
  except 
  

   the 
  tarsi, 
  are 
  dark 
  reddish 
  brown. 
  

  

  Type 
  locality. 
  — 
  Glen 
  Echo, 
  Md. 
  

  

  Other 
  locality. 
  — 
  Mount 
  Holly 
  Springs, 
  Pa. 
  

  

  Type 
  and 
  allotype.— 
  \J. 
  S. 
  N. 
  M. 
  No. 
  57783. 
  

  

  Three 
  females 
  and 
  two 
  males 
  collected 
  by 
  the 
  author. 
  The 
  Glen 
  

  

  