﻿art. 
  1 
  AMERICAN 
  PLOIARIINAE 
  McATEE 
  AND 
  MALLOCH 
  101 
  

  

  GHILIANELLA 
  VARICORNIS 
  (Dohrn). 
  

  

  E.[mesa] 
  varicornis 
  Dohrn, 
  A. 
  Emesina, 
  1860, 
  pp. 
  226-227 
  [Porto 
  Rico]. 
  

   Ghilianella 
  variicomis 
  Berg 
  roth, 
  E. 
  Ploeariinen 
  1906, 
  p. 
  317. 
  

  

  Dohrn 
  had 
  a 
  male 
  with 
  collapsed 
  abdomen 
  and 
  his 
  description 
  

   deals 
  mainly 
  with 
  coloration; 
  Bergroth 
  describes 
  the 
  structural 
  

   characters 
  from 
  a 
  female, 
  the 
  specimen 
  examined 
  during 
  the 
  present 
  

   revision. 
  

  

  Female. 
  — 
  Closely 
  related 
  to 
  G. 
  productilis 
  Barber, 
  of 
  the 
  same 
  

   long 
  slender 
  form, 
  and 
  coloration 
  including 
  the 
  characteristic 
  dark 
  

   dots; 
  those 
  on 
  posterior 
  lobe 
  of 
  head 
  and 
  on 
  pronotum 
  are 
  obsolete, 
  

   however, 
  in 
  the 
  specimen 
  at 
  hand, 
  while 
  there 
  is 
  a 
  faint 
  pair 
  on 
  

   front 
  lobe 
  of 
  head. 
  Legs 
  stramineous, 
  mid 
  and 
  hind 
  pairs 
  va- 
  

   riegated, 
  the 
  mid 
  tibiae 
  each 
  with 
  a 
  single 
  distinct, 
  and 
  the 
  femora 
  

   with 
  numerous 
  indistinct, 
  fuscous 
  annuli 
  ; 
  some 
  longitudinal 
  striping 
  

   each 
  side 
  of 
  the 
  knee-joint. 
  Basal 
  segment 
  of 
  antenna 
  with 
  nu- 
  

   merous 
  faint 
  brown 
  annuli. 
  Frontal 
  spine 
  prominent, 
  decurved; 
  

   head 
  and 
  thorax 
  moderately 
  granulate; 
  the 
  divisions 
  of 
  thorax 
  de- 
  

   creasing 
  in 
  length 
  from 
  front 
  to 
  rear; 
  a 
  tubercle 
  each 
  side 
  of 
  base 
  

   of 
  head 
  on 
  anterior 
  margin 
  of 
  pronotum, 
  prominent, 
  rather 
  pointed, 
  

   much 
  more 
  distinct 
  than 
  in 
  G. 
  productilis. 
  Abdomen 
  widening 
  very 
  

   gradually 
  from 
  base 
  to 
  apex, 
  tubercled 
  as 
  in 
  G. 
  productilis, 
  the 
  lat- 
  

   eral 
  angles 
  and 
  median 
  tubercle 
  of 
  7 
  about 
  equally 
  produced 
  ; 
  eighth 
  

   semi 
  -octagonal 
  in 
  shape, 
  transversely 
  wrinkled 
  and 
  indistinctly 
  lon- 
  

   gitudinally 
  keeled, 
  the 
  apex 
  rather 
  pointed, 
  and 
  the 
  margins 
  be- 
  

   tween 
  apex 
  and 
  lateral 
  angles 
  slightly 
  concave; 
  ninth 
  longer 
  than 
  

   eighth, 
  faintly 
  transversely 
  corrugated, 
  slightly 
  narrowed 
  apically, 
  

   apex 
  concave, 
  with 
  the 
  lateral 
  angles 
  each 
  side 
  of 
  the 
  concavity 
  dis- 
  

   tinctly 
  pointed 
  as 
  seen 
  from 
  behind, 
  broader 
  as 
  seen 
  from 
  side. 
  

   Seventh 
  sternite 
  distinctly 
  concave 
  medianly, 
  the 
  sides 
  of 
  hind 
  mar- 
  

   gin 
  also 
  shallowly 
  concave. 
  

  

  Length, 
  26.5 
  mm. 
  

  

  Porto 
  Rico 
  (Coll. 
  E. 
  Bergroth). 
  

  

  GHILIANELLA 
  BICAUDATA, 
  new 
  species. 
  

  

  Female. 
  — 
  Testaceous, 
  legs 
  and 
  thorax 
  above 
  washed 
  with 
  rufous 
  

   and 
  lightly 
  marked, 
  the 
  thorax 
  below 
  and 
  abdomen 
  above 
  more 
  

   heavily, 
  variegated, 
  with 
  fuscous; 
  a 
  pair 
  of 
  dark 
  blotches 
  near 
  

   hind 
  margin 
  of 
  each 
  sternite; 
  species 
  in 
  general 
  appearance 
  much 
  

   like 
  productilis. 
  Abdomen 
  widening 
  gradually 
  to 
  juncture 
  of 
  fourth 
  

   and 
  fifth 
  segments, 
  then 
  tapering 
  very 
  slightly 
  to 
  end; 
  connexivum 
  

   slightly 
  elevated; 
  central 
  strips 
  of 
  tergites 
  with 
  a 
  longitudinal 
  

   ridge; 
  seventh 
  tergite 
  with 
  the 
  lateral 
  angles 
  slightly 
  flaring 
  and 
  

   projecting 
  well 
  posteriorly, 
  the 
  hind 
  margin 
  between 
  them 
  nearly 
  

   straight 
  and 
  bearing 
  at 
  the 
  middle 
  a 
  terete, 
  pointed, 
  porrect 
  tubercle, 
  

   which 
  slightly 
  exceeds 
  the 
  lateral 
  angles 
  (fig. 
  169) 
  ; 
  eighth 
  tergite 
  

  

  