﻿350 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol 
  96 
  

  

  always 
  with 
  a, 
  callus 
  at 
  proximal 
  end 
  of 
  marginal 
  vein, 
  this 
  callus 
  fre- 
  

   quently 
  but 
  not 
  always 
  bearing 
  a 
  tuft 
  of 
  erect 
  bristles; 
  usually 
  with 
  a 
  

   transverse 
  fuscous 
  band 
  behind 
  stigmal 
  vein 
  and 
  another 
  at 
  juncture 
  of 
  

   submarginal 
  and 
  marginal 
  veins 
  but 
  occasionally 
  without 
  bands; 
  scutellum 
  

   without 
  a 
  cross 
  furrow 
  before 
  apex 
  Cerocephalinae, 
  new 
  subfamily 
  

  

  Because 
  of 
  their 
  bicalcarate 
  hind 
  tibiae 
  the 
  cerocephalines 
  would 
  

   run 
  to 
  the 
  family 
  Miscogasteridae 
  in 
  Ashmead's 
  key 
  to 
  families 
  

   of 
  Chalcidoidea 
  (Mem. 
  Carnegie 
  Mus., 
  vol. 
  1, 
  p. 
  228, 
  1904) 
  , 
  and 
  in 
  

   that 
  group, 
  as 
  constituted 
  by 
  Ashmead, 
  they 
  closely 
  resemble 
  

   some 
  apterous 
  forms 
  in 
  the 
  subfamily 
  Lelapinae, 
  from 
  which 
  they 
  

   differ 
  principally 
  by 
  the 
  absence 
  of 
  a 
  neck 
  on 
  the 
  propodeum 
  and 
  

   by 
  differences 
  in 
  the 
  shape 
  of 
  the 
  head. 
  I 
  do 
  not 
  consider 
  the 
  

   Miscogasteridae 
  to 
  be 
  separable 
  as 
  a 
  family 
  from 
  the 
  Pteromali- 
  

   dae. 
  Instead, 
  I 
  think 
  it 
  should 
  be 
  combined 
  with 
  the 
  Pteromali- 
  

   dae 
  to 
  form 
  a 
  large 
  family 
  made 
  up 
  of 
  numerous 
  smaller 
  groups 
  

   including 
  the 
  Cerocephalinae, 
  Spalangiinae, 
  and 
  Lelapinae 
  among 
  

   numerous 
  others. 
  

  

  Family 
  PTEROMALIDAE 
  

   Cerocephalinae, 
  new 
  subfamily 
  

  

  Eight 
  genera 
  are 
  here 
  included 
  in 
  the 
  Cerocephalinae. 
  viz: 
  

   Choetospila 
  Westwood, 
  Theocolax 
  Westwood, 
  Cerocephala 
  West- 
  

   wood, 
  Theocolaxia 
  Girault, 
  Parcdaesthia 
  Cameron, 
  Acerocephala 
  

   new 
  genus, 
  Neosciatheras 
  Masi, 
  and 
  Sciatherellus 
  Masi. 
  No 
  

   representatives 
  of 
  Paralaesthia, 
  Neosciatheras, 
  and 
  Sciatherellvs 
  

   have 
  been 
  available 
  for 
  study, 
  and 
  they 
  are 
  placed 
  in 
  the 
  generic 
  

   key 
  solely 
  on 
  the 
  basis 
  of 
  the 
  descriptions. 
  No 
  doubt 
  some 
  genera 
  

   have 
  been 
  omitted 
  that 
  eventually 
  may 
  prove 
  to 
  belong 
  here. 
  

  

  Four 
  genera 
  that 
  have 
  previously 
  been 
  associated 
  by 
  some 
  

   authors 
  with 
  Cerocephala 
  and 
  Spalangia 
  have 
  been 
  excluded 
  from 
  

   Cerocephalinae. 
  These 
  genera 
  are 
  discussed 
  at 
  the 
  end 
  of 
  the 
  

   paper. 
  

  

  Description. 
  — 
  Head 
  varying 
  in 
  shape 
  from 
  subcircular 
  to 
  dis- 
  

   tinctly 
  oblong; 
  below 
  antennae 
  usually 
  concave, 
  the 
  margins 
  of 
  

   concavity 
  frequently 
  armed 
  with 
  one 
  or 
  more 
  sharp 
  protuberances 
  

   or 
  teeth 
  on 
  each 
  side; 
  if 
  not 
  concave 
  then 
  face 
  with 
  striae 
  con- 
  

   verging 
  toward 
  clypeus 
  ; 
  antennae 
  inserted 
  at 
  or 
  beloM' 
  middle 
  of 
  

   head 
  but 
  always 
  distinctly 
  above 
  clypeus 
  and 
  always 
  separated 
  

   at 
  base 
  by 
  a 
  raised 
  carina 
  or 
  narrow 
  plate 
  which 
  is 
  frequently 
  

   but 
  not 
  always 
  produced 
  anteriorly 
  to 
  form 
  a 
  sharp 
  tooth 
  or 
  spine 
  

   between 
  the 
  antennae; 
  malar 
  groove 
  absent; 
  occiput 
  carinately 
  

   margined 
  above 
  ; 
  head 
  attached 
  to 
  neck 
  of 
  pronotum 
  very 
  close 
  to 
  

   vertex. 
  Pronotum 
  large, 
  subconical, 
  sloping 
  from 
  posterior 
  

   margin 
  to 
  neck 
  without 
  any 
  abrupt 
  angulations 
  either 
  dorsally 
  or 
  

   laterally 
  ; 
  parapsidal 
  grooves 
  distinct 
  and 
  complete 
  ; 
  axillae 
  either 
  

  

  