﻿art. 
  1 
  AMERICAN 
  PLOIARIINAE 
  McATEE 
  AND 
  MALLOCH 
  117 
  

  

  raised 
  apically, 
  but 
  8 
  and 
  9 
  with 
  low 
  median 
  keels 
  and 
  more 
  or 
  less 
  

   corrugated 
  ; 
  hind 
  margins 
  of 
  sternites 
  4-6 
  emarginate 
  medianly, 
  ar- 
  

   cuate 
  laterally, 
  the 
  lateral 
  convexity 
  on 
  6 
  being 
  almost 
  angulate; 
  

   seventh 
  sternite 
  a 
  third 
  longer 
  than 
  6, 
  slightly 
  angulate-produced 
  

   medianly 
  ; 
  eighth 
  narrowly 
  visible 
  on 
  each 
  side. 
  

  

  Length, 
  21-24 
  mm. 
  

  

  Holotype. 
  — 
  Female, 
  Cabima', 
  Panama, 
  May 
  18, 
  1911, 
  Aug. 
  Busck; 
  

   paratype 
  female, 
  Alhajuela, 
  Panama, 
  A. 
  H. 
  Jennings; 
  another 
  fe- 
  

   male 
  without 
  locality. 
  

  

  Type 
  and 
  paratype.— 
  -Female, 
  Cat. 
  No. 
  26748, 
  U.S.N.M. 
  

  

  For 
  disposition 
  of 
  males 
  of 
  bulbifcra 
  see 
  page 
  97. 
  

  

  GHILIANELLA 
  APPROXIMATA, 
  new 
  species. 
  

  

  Male. 
  — 
  Head, 
  thorax 
  and 
  appendages, 
  bulbosity 
  and 
  hypopygium 
  

   piceous, 
  remainder 
  of 
  abdomen 
  chiefly, 
  frontal 
  spine, 
  anterior 
  tibia 
  

   and 
  tarsus, 
  and 
  spines 
  of 
  front 
  femur, 
  yellow-brown 
  or 
  paler. 
  Pubes- 
  

   cence 
  sordid 
  gray, 
  rather 
  dense 
  and 
  matted 
  over 
  thorax 
  and 
  in 
  

   patches 
  elsewhere. 
  Bulbosity 
  formed 
  chiefly 
  by 
  fifth 
  segment, 
  fourth 
  

   and 
  sixth 
  only 
  slightly 
  involved. 
  Seventh 
  tergite 
  rather 
  long, 
  

   neither 
  wrinkled 
  nor 
  coarsely 
  punctate 
  as 
  in 
  many 
  species, 
  rather 
  

   sharply 
  apiculate 
  and 
  slightly 
  surpassing 
  hypopygium. 
  Sternites 
  of 
  

   ordinary 
  form, 
  eighth 
  almost 
  straight 
  across 
  on 
  hind 
  margin, 
  slightly 
  

   concave 
  laterally, 
  moderately 
  exposed. 
  Ninth 
  sternite 
  long, 
  open- 
  

   ing 
  upward, 
  claspers 
  oblong, 
  pointed 
  apically. 
  

  

  Female. 
  — 
  Generally 
  paler 
  than 
  male, 
  with 
  edgings 
  and 
  much 
  mar- 
  

   bling 
  of 
  yellow-brown 
  ; 
  legs 
  with 
  usual 
  pale 
  markings. 
  Mesothorax 
  

   shorter 
  than 
  in 
  male, 
  but 
  longer 
  than 
  either 
  of 
  its 
  fellow 
  thoracic 
  

   parts. 
  Bulbosity 
  involving 
  more 
  of 
  fourth 
  and 
  sixth 
  segments, 
  the 
  

   elevations 
  of 
  fifth 
  tergite 
  more 
  remote 
  from 
  lateral 
  margins 
  than 
  in 
  

   male. 
  Hind 
  margin 
  of 
  sixth 
  tergite 
  concave 
  each 
  side 
  the 
  median 
  

   point, 
  which 
  is 
  about 
  as 
  far 
  produced 
  posteriorly 
  as 
  the 
  rounded 
  

   lateral 
  angles; 
  hind 
  margin 
  of 
  seventh 
  tergite 
  of 
  similar 
  shape, 
  

   declivous 
  each 
  side 
  of 
  median 
  prominence; 
  eighth 
  tergite 
  semi-cir- 
  

   cular, 
  low 
  carinate 
  medianly 
  and 
  radiately 
  corrugated 
  each 
  side 
  in 
  

   best 
  developed 
  specimen; 
  ninth 
  longer, 
  narrowed 
  and 
  notched 
  at 
  

   apex, 
  the 
  margins 
  elevated 
  above 
  the 
  disk 
  which 
  has 
  three 
  coarse 
  

   transverse 
  wrinkles. 
  Eighth 
  sternite 
  broadly 
  exposed, 
  angles 
  each 
  

   side 
  the 
  median 
  cleft 
  are 
  thickened, 
  pointed, 
  black, 
  and 
  with 
  a 
  tuft 
  

   of 
  long 
  golden 
  hairs. 
  

  

  Length, 
  24—25 
  mm. 
  

  

  Holotype. 
  — 
  Male, 
  Kurrenabaque, 
  Bolivia, 
  Oct. 
  1921; 
  allotype 
  fe- 
  

   male, 
  Huachi, 
  Bolivia, 
  1922; 
  another 
  fejinale 
  Corenda, 
  Bolivia, 
  1921, 
  

   and 
  two 
  males, 
  Huachi, 
  Bolivia, 
  Sept. 
  1921, 
  W. 
  M. 
  Mann 
  (U.S.N.M.) 
  . 
  

  

  Type, 
  allotype, 
  and 
  paratypes. 
  — 
  Cat. 
  No. 
  26749, 
  U.S.N.M. 
  

  

  