﻿154 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  »8 
  

  

  fourth 
  and 
  fifth 
  abdominal 
  tergites, 
  which 
  is 
  such 
  a 
  characteristic 
  

   feature 
  of 
  the 
  Belgian 
  Congo 
  form. 
  In 
  addition, 
  the 
  fore 
  femora 
  

   of 
  the 
  males 
  are 
  armed 
  beneath 
  with 
  a 
  long 
  retrorse 
  spine 
  and 
  also 
  

   have 
  the 
  antennal 
  scape 
  and 
  pedicel 
  very 
  curiously 
  modified. 
  

  

  Type. 
  — 
  Male; 
  Oloke-Meji 
  to 
  Ibadan, 
  Lagos, 
  southern 
  Nigeria. 
  (J. 
  

   C. 
  Bridwell 
  ; 
  U. 
  S. 
  N. 
  M., 
  No. 
  58034.) 
  

  

  MoHe. 
  — 
  Length 
  5 
  mm. 
  Black 
  ; 
  the 
  following 
  citrinous 
  : 
  Scapes 
  save 
  

   for 
  a 
  black 
  spot 
  behind 
  ; 
  pronotal 
  tubercles 
  ; 
  fore 
  femora 
  with 
  a 
  nar- 
  

   row 
  stripe 
  above 
  and 
  a 
  broad 
  stripe 
  lengthwise 
  below; 
  fore 
  tibiae; 
  

   middle 
  tibiae 
  on 
  outer 
  faces 
  ; 
  hind 
  tibiae 
  with 
  a 
  broad 
  stripe 
  lengthwise 
  

   on 
  outer 
  faces; 
  all 
  tarsi. 
  Mandibles 
  dark 
  red. 
  Fulvous: 
  Fore 
  

   femora 
  save 
  for 
  yellow 
  maculation 
  ; 
  middle 
  tibiae 
  on 
  inner 
  faces 
  ; 
  last 
  

   two 
  abdominal 
  segments. 
  

  

  Head 
  fulgid; 
  clypeus 
  with 
  a 
  silvery 
  sericeous 
  appressed 
  pile; 
  

   temples 
  with 
  a 
  thin 
  vestiture 
  of 
  decumbent 
  puberulent 
  silvery 
  hair. 
  

   Front 
  with 
  scapal 
  area 
  concave, 
  shining, 
  impunctate, 
  inconspicuously 
  

   and 
  transversely 
  strigose; 
  upper 
  front 
  and 
  vertex 
  with 
  coarse, 
  ir- 
  

   regular 
  pits 
  and 
  punctures, 
  which 
  somewhat 
  obscure 
  the 
  supraorbital 
  

   foveae; 
  ocelli 
  in 
  a 
  low 
  triangle, 
  the 
  ocellocular 
  line 
  three-fourths 
  the 
  

   postocellar 
  distance 
  ; 
  posterior 
  orbits 
  margined 
  by 
  a 
  carinule, 
  which 
  is 
  

   weakly 
  foveolate 
  anteriorly 
  and 
  which 
  is 
  continuous 
  across 
  vertex 
  

   behind 
  posterior 
  ocelli; 
  temples 
  and 
  area 
  between 
  postorbital 
  and 
  

   occipital 
  carinules 
  finely 
  punctulate. 
  Antennae 
  (fig. 
  16, 
  &) 
  with 
  

   scapes 
  irregular, 
  angulate 
  before 
  apex, 
  almost 
  one-half 
  (0.45) 
  the 
  

   vertical 
  eye 
  length; 
  pedicel 
  two-thirds 
  the 
  length 
  of 
  first 
  flagellar 
  

   article, 
  with 
  a 
  long 
  lateral 
  acuminate 
  appendix 
  ; 
  flagellum 
  with 
  first 
  

   segment 
  angularly 
  widened 
  below 
  toward 
  apex 
  and 
  twice 
  the 
  length 
  

   of 
  second 
  segment; 
  last 
  segment 
  twice 
  the 
  length 
  of 
  penult 
  article; 
  

   antennocular 
  line 
  one-half 
  the 
  interantennal 
  distance. 
  Clypeus 
  (fig. 
  

   16, 
  n) 
  one-fourth 
  the 
  vertical 
  eye 
  length, 
  finely 
  punctulate, 
  flat 
  later- 
  

   ally 
  to 
  sharply 
  tuberculate 
  discally; 
  with 
  a 
  polite, 
  impunctate, 
  gla- 
  

   brous, 
  trigonal 
  bevel 
  from 
  discal 
  tubercle 
  to 
  apex 
  of 
  the 
  sex-dentate 
  

   median 
  lobe. 
  Mandibles 
  with 
  apices 
  slender, 
  acuminate 
  ; 
  lower 
  mar- 
  

   gins 
  distinctly 
  excised. 
  

  

  Thorax 
  fulgid 
  ; 
  with 
  a 
  thin 
  and 
  inconspicuous 
  vestiture 
  of 
  puberulent 
  

   silvery 
  pubescence, 
  which 
  is 
  most 
  noticeable 
  on 
  epicnemium 
  and 
  lower 
  

   mesopleura. 
  Pronotum 
  short, 
  anterior 
  margin 
  transversely 
  carinate, 
  

   humeri 
  and 
  pronotal 
  tubercles 
  sharply 
  dentate. 
  Mesonotum 
  with 
  

   scattered, 
  coarse, 
  variolate 
  pits 
  and 
  punctures 
  ; 
  suture 
  between 
  mesono- 
  

   tum 
  and 
  scutellum 
  deeply 
  impressed 
  ; 
  scutellum 
  with 
  coarse 
  variolate 
  

   punctures, 
  lateral 
  edges 
  sharply 
  margined; 
  postscutellum 
  with 
  ante- 
  

   rior 
  margin 
  arcuately 
  carinate, 
  surface 
  concave, 
  bisected 
  by 
  a 
  carinule, 
  

   lateral 
  and 
  posterior 
  margins 
  edged 
  with 
  a 
  translucent, 
  brownish, 
  

   ecarinulate 
  lamina, 
  which 
  is 
  emarginate 
  medioposteriorly. 
  Meso- 
  

  

  