﻿art. 
  1 
  AMERICAN 
  PLOIARIINAE 
  McATEE 
  AND 
  MALLOCH 
  43 
  

  

  white. 
  Abdomen 
  with 
  a 
  spot 
  on 
  connexivum 
  in 
  front 
  of 
  each 
  spir- 
  

   acle, 
  and 
  membrane 
  surrounding 
  the 
  spiracles 
  whitish. 
  Legs 
  castan- 
  

   eous, 
  femora 
  blackish 
  apieally, 
  and 
  with 
  a 
  broad 
  whitish 
  apical 
  an- 
  

   nulus, 
  bases 
  of 
  tibiae 
  each 
  with 
  a 
  broad 
  white 
  annulus, 
  the 
  ground 
  

   color 
  immediately 
  beyond 
  almost 
  black. 
  Markings 
  of 
  fore 
  wing 
  as 
  

   in 
  figure 
  54. 
  Coxal 
  spots 
  and 
  bases 
  of 
  mid 
  and 
  hind 
  tibiae 
  some- 
  

   times 
  touched 
  with 
  orange 
  red. 
  

  

  Head 
  about 
  twice 
  as 
  long 
  as 
  wide, 
  not 
  tuberculate 
  on 
  dorsum, 
  the 
  

   median 
  transverse 
  constriction 
  very 
  deep. 
  Anterior 
  lobe 
  of 
  prothorax 
  

   arcuate, 
  tapered 
  slightly 
  posteriorly, 
  about 
  1.75 
  as 
  long 
  as 
  wide, 
  

   faintly 
  sulcate 
  on 
  dorsum 
  and 
  obliquely 
  on 
  sides, 
  and 
  with 
  a 
  pair 
  of 
  

   outwardly 
  directed 
  sharp 
  thorns 
  on 
  anterior 
  margin 
  above; 
  posterior 
  

   lobe 
  a 
  little 
  shorter 
  than 
  anterior, 
  but 
  little 
  tapered 
  anteriorly, 
  as 
  long 
  

   as 
  wide, 
  with 
  a 
  broad 
  shallow 
  median 
  sulcus, 
  and 
  three 
  long 
  slender 
  

   thorns 
  near 
  posterior 
  margin 
  ; 
  mesonotum 
  with 
  a 
  subtriangular 
  ele- 
  

   vation; 
  metanotum 
  with 
  a 
  short 
  spine. 
  Abdomen 
  slightly 
  sloped 
  

   downward 
  from 
  apex 
  of 
  seventh 
  tergite, 
  the 
  eighth 
  in 
  the 
  form 
  of 
  a 
  

   broadly 
  rounded 
  lobe 
  which 
  at 
  center 
  is 
  not 
  over 
  half 
  as 
  long 
  as 
  

   ninth 
  tergite. 
  Fore 
  legs 
  as 
  stated 
  in 
  key, 
  femora 
  tapered 
  at 
  base 
  and 
  

   apex. 
  Venation 
  as 
  in 
  figures 
  54 
  and 
  55. 
  

  

  The 
  male 
  has 
  the 
  pale 
  color 
  markings 
  rather 
  more 
  accentuated; 
  

   the 
  apical 
  tergite 
  has 
  a 
  broad, 
  triangularly 
  pointed 
  process; 
  hypo- 
  

   pygium 
  wanting 
  in 
  the 
  specimen 
  examined. 
  

  

  Length, 
  15-20 
  mm. 
  

  

  In 
  addition 
  to 
  the 
  holotype 
  female 
  from 
  French 
  Guiana, 
  kindly 
  

   submitted 
  by 
  Doctor 
  Bergroth, 
  Ave 
  have 
  seen 
  two 
  other 
  female 
  speci- 
  

   mens 
  from 
  French 
  Guiana 
  (Bas 
  Carsevenne, 
  F. 
  Geay, 
  1898; 
  R. 
  Ober- 
  

   thur, 
  1899) 
  belonging 
  to 
  the 
  Paris 
  Museum, 
  one 
  male 
  and 
  one 
  female 
  

   from 
  Para. 
  Brazil. 
  June 
  (Carnegie 
  Museum), 
  and 
  one 
  female 
  from 
  

   Trinidad 
  Rio. 
  Panama. 
  June 
  4, 
  1912, 
  A. 
  Busck 
  (U.S.N.M.). 
  

  

  EMESA 
  (MYIAGREUTES) 
  MINOR, 
  new 
  species. 
  

  

  Female. 
  — 
  Much 
  paler 
  than 
  the 
  preceding 
  species, 
  the 
  general 
  color 
  

   being 
  ochreous 
  without 
  the 
  conspicuous 
  cream 
  colored 
  markings 
  

   which 
  are 
  so 
  evident 
  on 
  the 
  thorax 
  and 
  abdomen 
  in 
  praecellens. 
  The 
  

   legs 
  are 
  paler 
  and 
  while 
  the 
  apices 
  of 
  femora 
  and 
  bases 
  of 
  tibiae 
  are 
  

   paler 
  than 
  the 
  other 
  parts 
  the 
  immediately 
  adjacent 
  areas 
  do 
  not 
  show 
  

   the 
  dark 
  brown 
  annuli 
  so 
  conspicuous 
  in 
  praecellens. 
  The 
  forewings 
  

   are 
  missing 
  in 
  the 
  type 
  and 
  but 
  one 
  hind 
  wing 
  remains, 
  which 
  has 
  

   the 
  same 
  venation 
  as 
  praecellens. 
  Structural 
  characters 
  other 
  than 
  

   those 
  mentioned 
  in 
  key 
  much 
  the 
  same 
  as 
  in 
  praecellens. 
  

  

  Length, 
  12 
  mm. 
  

  

  Holotype. 
  — 
  Female, 
  Chaco 
  Austral, 
  near 
  Icano, 
  Argentina, 
  1910. 
  

   E. 
  R. 
  Wagner 
  (Paris 
  Museum). 
  

  

  