﻿124 
  PKOCEEDINGS 
  OP 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  67 
  

  

  (fig. 
  202). 
  Sternites 
  5, 
  6, 
  and 
  7 
  are 
  shorter 
  than 
  in 
  less 
  bulbous 
  

   species 
  and 
  each 
  is 
  broadly 
  emarginate 
  medianly; 
  the 
  ninth 
  sternite 
  

   or 
  hypopygium 
  is 
  short 
  and 
  opens 
  upward; 
  the 
  claspers 
  are 
  short- 
  

   oblong, 
  narrowed 
  apically. 
  Fore 
  leg 
  and 
  its 
  armature 
  as 
  in 
  fig- 
  

   ures 
  203, 
  204. 
  

  

  Female. 
  — 
  In 
  color 
  like 
  the 
  male, 
  with 
  a 
  greater 
  tendency, 
  how- 
  

   ever, 
  to 
  yellowish 
  spotting 
  or 
  marbling; 
  granulation 
  and 
  pubescence 
  

   about 
  the 
  same. 
  The 
  abdomen 
  widens 
  gradually 
  from 
  base 
  to 
  apex 
  

   of 
  fourth 
  segment, 
  from 
  which 
  point 
  to 
  end 
  of 
  seventh 
  the 
  width 
  is 
  

   nearly 
  uniform; 
  it 
  is 
  thus 
  a 
  veiw 
  good 
  illustration 
  of 
  the 
  clavate 
  

   form: 
  the 
  median 
  line 
  of 
  tergites 
  is 
  slightly 
  elevated, 
  subapically 
  

   the 
  lateral 
  margins 
  of 
  tergite 
  6 
  tend 
  to 
  project 
  beyond 
  the 
  common 
  

   lateral 
  outline 
  of 
  abdomen, 
  and 
  the 
  hind 
  margin 
  of 
  tergites 
  5 
  and 
  

  

  6 
  is 
  bisinuate, 
  the 
  slight 
  median 
  angulation 
  and 
  the 
  lateral 
  angles 
  

   projecting 
  about 
  equally 
  posteriorly; 
  hind 
  margin 
  of 
  the 
  seventh 
  

   tergite 
  slightly 
  concave, 
  with 
  a 
  distinct 
  small 
  median 
  tubercle; 
  

   eighth 
  tergite 
  almost 
  semicircular, 
  radiately 
  wrinkled; 
  ninth 
  trun- 
  

   cate 
  cuneate, 
  the 
  base 
  faintty 
  transversely 
  corrugated, 
  the 
  apex 
  raised 
  

   medianly, 
  more 
  or 
  less 
  concave 
  distally, 
  sometimes 
  faintly 
  longitudi- 
  

   nally 
  ridged 
  ; 
  the 
  hind 
  margins 
  of 
  sternites 
  2 
  and 
  3 
  are 
  emarginate 
  

   medianly, 
  those 
  of 
  4, 
  5, 
  and 
  6 
  are 
  nearly 
  simply 
  concave; 
  that 
  of 
  

  

  7 
  is 
  convex 
  medianly 
  and 
  slightly 
  concave 
  laterally; 
  and 
  the 
  ex- 
  

   posed 
  portions 
  of 
  8 
  are 
  elliptical. 
  

  

  Length, 
  23-27 
  mm. 
  

  

  Santarem, 
  April-July 
  1919, 
  S. 
  M. 
  Klages; 
  Chapada, 
  Para, 
  all 
  

   Brazil 
  (Carnegie 
  Mus.) 
  ; 
  a 
  male 
  labelled 
  Amazon, 
  Stevens 
  (Stock- 
  

   holm 
  Mus.) 
  ; 
  two 
  females 
  Itaituba, 
  Amazon, 
  Brazil, 
  Noualhier, 
  1898; 
  

   three 
  males, 
  Para, 
  and 
  one 
  Amazonas, 
  Noualhier, 
  1898 
  (Paris 
  Mus.). 
  

  

  GHILIANELLA 
  MIRABILIS, 
  new 
  species. 
  

  

  Male. 
  — 
  Head 
  and 
  thorax 
  moderately 
  granulate; 
  pubescence 
  short; 
  

   color 
  castaneous, 
  varying 
  in 
  depth, 
  but 
  without 
  definite 
  pale 
  mark- 
  

   ings 
  anywhere 
  ; 
  frontal 
  spine 
  porrect, 
  sharp, 
  stramineous. 
  Abdomen 
  

   terete 
  and 
  of 
  nearly 
  uniform 
  diameter 
  from 
  base 
  to 
  posterior 
  fourth 
  

   of 
  fourth 
  tergite 
  which 
  expands 
  abrupt!} 
  7 
  to 
  form 
  anterior 
  wall 
  of 
  

   bulbosity. 
  The 
  largest 
  component 
  of 
  the 
  latter 
  is 
  the 
  remarkably 
  

   horned 
  fifth 
  segment 
  described 
  in 
  key 
  (figs. 
  205, 
  206), 
  but 
  the 
  sixth 
  

   segment 
  is 
  wholly 
  included 
  and 
  the 
  seventh 
  is 
  so 
  short 
  that 
  the 
  

   bulbosity 
  is 
  practically 
  terminal. 
  Seventh 
  tergite 
  an 
  approximately 
  

   equilateral 
  triangle 
  (fig. 
  207), 
  corrugated 
  transversely, 
  and 
  elevated 
  

   and 
  apiculate 
  distally. 
  Hind 
  margin 
  of 
  the 
  fourth 
  sternite 
  with 
  

   a 
  shorter 
  and 
  deeper 
  median, 
  and 
  broader 
  but 
  shallower 
  lateral 
  con- 
  

   cavities 
  ; 
  fifth 
  deeply 
  concave, 
  thus 
  being 
  very 
  short 
  on 
  median 
  line 
  ; 
  

   sixth 
  also 
  deeply 
  concave 
  but 
  of 
  about 
  same 
  length 
  in 
  middle 
  as 
  on 
  

   'sides; 
  seventh 
  longer, 
  with 
  a 
  short 
  but 
  distinct 
  median 
  emargina- 
  

  

  