﻿100 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  67 
  

  

  DESCRIPTIONS 
  OF 
  THE 
  SPECIES. 
  

   GHILIANELLA 
  GALAPAGENSIS 
  Heidemann. 
  

  

  GhiliancUa 
  galapagensis 
  Heidemann, 
  O. 
  H. 
  Papers 
  from 
  the 
  Hopkins 
  Stan- 
  

   ford 
  Galapagos 
  Expedition, 
  1898-1899. 
  Entomological 
  Results 
  (1) 
  Hemiptera, 
  

   Proc. 
  Washington 
  Acad. 
  Sci., 
  vol. 
  3, 
  pp. 
  367-8, 
  Aug. 
  23, 
  1901 
  [Hood 
  Island]. 
  

  

  Female. 
  — 
  General 
  color 
  testaceous, 
  the 
  abdomen 
  considerably 
  

   clouded 
  with 
  fuscous; 
  abdomen 
  gradually 
  widened 
  to 
  juncture 
  of 
  

   fifth 
  and 
  sixth 
  segments 
  and 
  tapered 
  from 
  thence 
  to 
  apex, 
  the 
  expan- 
  

   sion 
  involving 
  more 
  segments 
  (3-7) 
  and 
  having 
  more 
  of 
  them 
  (4-7) 
  

   of 
  nearly 
  equal 
  width 
  than 
  in 
  other 
  species 
  ; 
  dorsal 
  sutures 
  transverse, 
  

   the 
  tergites 
  with 
  small 
  but 
  progressively 
  increasing 
  elevations 
  on 
  the 
  

   hind 
  margins 
  of 
  2-6 
  ; 
  posterior 
  angles 
  of 
  tergite 
  7 
  rather 
  prominent, 
  

   the 
  hind 
  margin 
  between 
  nearly 
  straight, 
  with 
  a 
  median 
  elevation; 
  

   eighth 
  tergite 
  two-thirds 
  as 
  long 
  as 
  broad, 
  very 
  slightly 
  sculptured, 
  

   apex 
  very 
  broadly 
  rounded; 
  exposed 
  portion 
  of 
  tergite 
  9 
  much 
  

   shorter 
  than 
  8, 
  depressed 
  apically 
  on 
  each 
  side 
  of 
  a 
  short 
  keel 
  ; 
  hind 
  

   margins 
  of 
  sternites 
  4-5 
  nearly 
  transverse, 
  slightly 
  inclined 
  anteri- 
  

   orly, 
  of 
  2, 
  3, 
  and 
  G, 
  more 
  or 
  less 
  emarginate 
  medianly 
  and 
  arcuate 
  

   laterally, 
  6 
  most 
  so; 
  seventh 
  tergite 
  convex 
  medianly, 
  concave 
  later- 
  

   ally, 
  eighth 
  just 
  the 
  reverse, 
  with 
  a 
  large 
  median 
  emargination, 
  

   seventh 
  with 
  a 
  small 
  one. 
  Fore 
  leg 
  and 
  its 
  armature 
  as 
  in 
  figures 
  

   167, 
  168. 
  

  

  Length, 
  12.5 
  mm. 
  

  

  Holotype. 
  — 
  Female, 
  Hood 
  Island, 
  Galapagos 
  Archipelago, 
  May 
  

   18, 
  1899 
  (type 
  No. 
  4931, 
  U.S.N.M.). 
  

  

  A 
  nymph 
  also, 
  Albemarle 
  Island, 
  March 
  11, 
  1899 
  (U.S.N.M.). 
  

  

  GHILIANELLA 
  SEMIPALLIDA 
  Bergroth. 
  

  

  Ghilianella 
  semipallida 
  Bergroth, 
  E. 
  Ploeariinen 
  1906, 
  pp. 
  317-318 
  

   [Venezuela]. 
  

  

  Female. 
  — 
  A 
  specimen 
  without 
  antennae, 
  or 
  mid 
  and 
  hind 
  legs, 
  

   and 
  with 
  the 
  abdomen 
  collapsed, 
  Corozal, 
  Collection 
  E. 
  Bergroth, 
  

   is 
  the 
  only 
  one 
  we 
  have 
  seen. 
  General 
  color 
  of 
  upper 
  surface 
  stra- 
  

   mineous, 
  of 
  lower 
  pale 
  castaneous. 
  Frontal 
  spine 
  porrect, 
  sharp. 
  

   Head 
  sparsely 
  granulate, 
  divisions 
  of 
  thorax 
  with 
  practically 
  no 
  

   granulations 
  on 
  top 
  and 
  only 
  a 
  few 
  along 
  the 
  sides; 
  mesothorax 
  

   longer 
  than 
  either 
  of 
  the 
  other 
  divisions. 
  Abdomen 
  very 
  long 
  and 
  

   slender, 
  apparently 
  widening 
  gradually 
  from 
  base 
  to 
  apex; 
  tergites 
  

   without 
  tubercles; 
  hind 
  margin 
  of 
  seventh 
  about 
  straight 
  across; 
  

   eighth 
  semicircular; 
  ninth 
  longer, 
  cuneate 
  portion 
  of 
  disk 
  raised 
  

   above 
  lateral 
  portions, 
  its 
  point 
  coalescing 
  at 
  apex 
  with 
  the 
  slightly 
  

   elevated 
  margins. 
  Seventh 
  sternite 
  slightly 
  angulate 
  medianly, 
  

   slightly 
  concave 
  laterally; 
  eighth 
  sternite 
  broadly 
  exposed 
  on 
  each 
  

   side. 
  

  

  Length, 
  23 
  mm. 
  

  

  Corozal, 
  Venezuela 
  (Coll. 
  E. 
  Bergroth). 
  The 
  type. 
  

  

  