﻿60 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL. 
  MUSEUM 
  vol. 
  6T 
  

  

  PLOIARIA 
  ALBIPENNIS. 
  new 
  species. 
  

  

  Male. 
  — 
  A 
  pale 
  stramineous 
  species 
  without 
  conspicuous 
  markings. 
  

   The 
  forewings 
  are 
  entirely 
  unmarked, 
  the 
  veins 
  on 
  basal 
  half 
  slightly 
  

   smoky, 
  those 
  on 
  apical 
  half 
  very 
  pale. 
  The 
  fore 
  femora 
  have 
  a 
  

   faint 
  narrow 
  preapical 
  and 
  a 
  narrower 
  and 
  less 
  distinct 
  apical 
  band 
  

   brown, 
  while 
  the 
  mid 
  and 
  hind 
  pairs 
  are 
  pale 
  brownish 
  with 
  a 
  

   rather 
  distinct 
  preapical 
  broad 
  darker 
  brown 
  annulus; 
  knees 
  pale. 
  

  

  Basal 
  segment 
  of 
  antenna 
  long-haired, 
  as 
  long 
  as 
  2+3, 
  fourth 
  

   about 
  five-sixths 
  as 
  long 
  as 
  third. 
  Fore 
  coxa 
  nearly 
  as 
  long 
  as 
  

   pronotum 
  and 
  mesonotum, 
  and 
  subequal 
  to 
  fore 
  tibia; 
  trochanter 
  

   with 
  two 
  moderately 
  strong 
  spines, 
  and 
  a 
  bristle; 
  femur 
  with 
  about 
  

   six 
  outstanding 
  spines, 
  the 
  intervening 
  short 
  spines 
  set 
  on 
  elevated 
  

   bases. 
  A 
  pair 
  of 
  slender 
  spines 
  inside 
  of 
  upper 
  border 
  of 
  hypo- 
  

   pygium 
  as 
  in 
  bispina, 
  the 
  hypopygial 
  claspers 
  slender, 
  abruptly 
  

   curved 
  near 
  apex 
  and 
  pointed. 
  Venation 
  normal, 
  discal 
  cell 
  about 
  

   four-fifths 
  as 
  long 
  as 
  vein 
  emanating 
  from 
  its 
  apex, 
  the 
  latter 
  dis- 
  

   tinctly 
  curved, 
  not 
  reaching 
  margin 
  of 
  wing, 
  the 
  cross 
  vein 
  nearly 
  

   straight, 
  at 
  two-fifths 
  length 
  of 
  posterior 
  vein 
  from 
  apex. 
  

  

  Length, 
  7 
  mm. 
  

  

  Holotype. 
  — 
  Lower 
  California, 
  1895, 
  Diguet 
  (Paris 
  Mus.). 
  Para- 
  

   type, 
  Frontera, 
  Tabasco, 
  Mexico, 
  June, 
  1897, 
  C. 
  H. 
  T. 
  Townsend 
  

   (Iowa). 
  

  

  PLOIARIA 
  UMBRARUM, 
  new 
  species. 
  

  

  Male. 
  — 
  Brownish 
  testaceous, 
  the 
  wings 
  apparently 
  immaculate; 
  

   and 
  only 
  the 
  apices 
  of 
  hind 
  femora 
  and 
  bases 
  of 
  hind 
  tibia 
  whitish. 
  

   The 
  specimens 
  were 
  preserved 
  in 
  alcohol 
  which 
  may 
  have 
  changed 
  

   the 
  coloring. 
  

  

  Width 
  of 
  head 
  less 
  than 
  its 
  length; 
  interocular 
  space 
  less 
  than 
  

   width 
  of 
  one 
  eye. 
  Prothorax 
  and 
  mesothorax 
  subequal. 
  Hy- 
  

   popygium 
  without 
  strong 
  paired 
  spines 
  inside 
  the 
  apical 
  border, 
  

   the 
  claspers 
  rather 
  angularly 
  bent 
  at 
  middle, 
  with 
  acutely 
  pointed 
  

   tips. 
  Fore 
  coxa 
  fully 
  as 
  long 
  as 
  prothorax 
  and 
  mesothorax 
  com- 
  

   bined, 
  and 
  very 
  slightly 
  longer 
  than 
  fore 
  tibia; 
  armature 
  of 
  fore 
  

   femur 
  rather 
  fine, 
  the 
  longest 
  bristles 
  at 
  middle 
  shorter 
  than 
  femoral 
  

   diameter. 
  Venation 
  as 
  stated 
  in 
  key. 
  

  

  Length, 
  7 
  mm. 
  

  

  Holotype. 
  — 
  And 
  one 
  paratype 
  male, 
  Mandeville, 
  Jamaica, 
  in 
  a 
  

   cave. 
  (U.S.N.M.) 
  

  

  This 
  is 
  the 
  only 
  species 
  of 
  the 
  subfamily 
  from 
  the 
  New 
  World 
  

   which 
  we 
  have 
  any 
  record 
  of 
  as 
  occurring 
  in 
  caves 
  but 
  there 
  are 
  

   several 
  species 
  so 
  recorded 
  from 
  the 
  Eastern 
  Hemisphere. 
  

  

  Type 
  and 
  paratype.— 
  Cut. 
  No. 
  2G722, 
  U.S.N.M. 
  

  

  