﻿196 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.98 
  

  

  broad, 
  maximum 
  width 
  one-third 
  the 
  length; 
  palpi 
  slender, 
  yellow, 
  

   black-haired. 
  

  

  Thorax 
  mostly 
  subshining; 
  spines 
  of 
  scutellum 
  subequal 
  to 
  scutel- 
  

   lum 
  in 
  length, 
  yellow; 
  narrow 
  extreme 
  apex 
  of 
  scutellum 
  sometimes 
  

   yellowish. 
  Pile 
  of 
  thorax 
  entirely 
  black, 
  except, 
  in 
  some 
  specimens, 
  

   a 
  tuft 
  above 
  each 
  front 
  coxa 
  ; 
  that 
  of 
  mesonotum 
  and 
  scutellum 
  long, 
  

   erect 
  ; 
  that 
  of 
  pleural 
  and 
  sternal 
  areas 
  erect 
  to 
  subapressed 
  and 
  not 
  

   so 
  long 
  or 
  dense. 
  Femora 
  black 
  except 
  apices; 
  tibiae 
  yellow 
  to 
  yel- 
  

   lowish 
  brown 
  ; 
  tarsi 
  bright 
  yellow 
  at 
  base, 
  last 
  three 
  segments 
  of 
  front 
  

   and 
  last 
  two 
  of 
  intermediate 
  and 
  hind 
  pairs 
  brownish 
  to 
  black, 
  the 
  

   individual 
  segments 
  each 
  becoming 
  darker 
  toward 
  their 
  apices. 
  Wing 
  

   yellowish 
  hyaline, 
  somewhat 
  brownish 
  subhyaline 
  in 
  the 
  area 
  of 
  the 
  

   stronger 
  veins; 
  veins 
  yellow, 
  becoming 
  brownish 
  on 
  posterior 
  half; 
  

   R4 
  wanting; 
  m-cu 
  wanting, 
  the 
  radial 
  sector 
  forming 
  broad 
  upper 
  

   part 
  of 
  discal 
  cell 
  ; 
  Mi 
  represented 
  by 
  a 
  spur 
  and 
  a 
  fold 
  ; 
  M2 
  distinct 
  

   almost 
  to 
  the 
  wing 
  margin 
  ; 
  Ms 
  wanting. 
  Halteres 
  yellow. 
  

  

  Abdomen 
  broader 
  than 
  thorax; 
  coloration 
  variable; 
  tergites 
  sub- 
  

   opaque, 
  becoming 
  shining, 
  with 
  a 
  bluish 
  black 
  reflection, 
  apically 
  

   entirely 
  black, 
  or 
  with 
  a 
  large, 
  subquadrate, 
  subobscure 
  brownish 
  spot 
  

   near 
  each 
  lateral 
  margin 
  of 
  segments 
  two, 
  three, 
  and 
  sometimes 
  four 
  ; 
  

   venter 
  wholly 
  black 
  to 
  largely 
  brownish. 
  Genitalia 
  small, 
  black. 
  

   Length, 
  7.5 
  to 
  8 
  mm. 
  

  

  Eolotype 
  — 
  Male, 
  Bougainville 
  Island, 
  1944 
  (Downs), 
  U.S. 
  N.M. 
  No. 
  

   57307. 
  

  

  Paratypes. 
  — 
  4 
  males, 
  Bougainville 
  Island, 
  April 
  10, 
  1944 
  (Downs) 
  , 
  

   July 
  13, 
  1944 
  (Gumey), 
  and 
  no 
  date, 
  1944 
  (Gurney) 
  ; 
  2 
  males, 
  Em- 
  

   press 
  Augusta 
  Bay, 
  Bougainville 
  Island, 
  March 
  1944 
  (Downs) 
  ; 
  2 
  

   males, 
  Bougainville 
  Island 
  (Downs). 
  

  

  Remarks. 
  — 
  In 
  Brunetti's 
  key 
  this 
  species 
  traces 
  to 
  atraria 
  Walker, 
  

   which, 
  according 
  to 
  Brunetti's 
  redescription, 
  has 
  bare 
  eyes 
  and 
  a 
  

   weakly 
  developed 
  vein 
  Mg. 
  Stratiomys 
  nexura 
  Walker, 
  the 
  type 
  of 
  

   Bigot's 
  genus 
  Euceromys^ 
  appears 
  from 
  the 
  descriptions 
  to 
  be 
  a 
  similar 
  

   species 
  but 
  the 
  proportions 
  of 
  the 
  antennal 
  segments 
  are 
  different 
  

   (first 
  segment, 
  second 
  segment, 
  and 
  flagellum 
  in 
  the 
  ratio 
  1:1:4) 
  and, 
  

   according 
  to 
  information 
  furnished 
  me 
  by 
  James 
  E. 
  Collin, 
  cross- 
  vein 
  

   r-m 
  is 
  present. 
  

  

  Genus 
  PTECTICUS 
  Loew 
  

  

  Ptecticus 
  LoEW, 
  Verb, 
  Zool. 
  Eot. 
  Ges. 
  Wien, 
  vol. 
  5, 
  p. 
  142, 
  1855. 
  

  

  PTECTICUS 
  SALOMONENSIS 
  Lindner 
  

  

  Ptecticus 
  longipennis 
  salomonensis 
  Lindnee, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  set. 
  10, 
  vol. 
  

   20, 
  pp. 
  372-373, 
  1937; 
  not 
  Ptecticus 
  salomonensis 
  Lindner, 
  Ann. 
  Mag. 
  Nat. 
  

   Hist., 
  ser. 
  10, 
  vol. 
  20, 
  p. 
  393, 
  1937. 
  

  

  I 
  believe 
  this 
  form 
  is 
  more 
  than 
  a 
  subspecies 
  of 
  Ptecficits 
  longi- 
  

   pennis 
  (Wiedemann). 
  The 
  male 
  genitalia 
  are 
  entirely 
  different; 
  the 
  

  

  