﻿518 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  deep, 
  pale 
  reddish; 
  scutum 
  grayish 
  brown, 
  trivittate; 
  scutellum, 
  

   gray, 
  broadly 
  two-striped; 
  post-notum 
  dark. 
  Pleurae 
  uniformly 
  

   light 
  brown 
  without 
  conspicuous 
  stripes. 
  Halteres 
  pale, 
  knob 
  brown. 
  

   Legs 
  : 
  brownish 
  yellow, 
  a 
  narrow 
  dark 
  subapical 
  ring 
  on 
  the 
  femora. 
  

  

  Wings: 
  cells 
  C 
  and 
  Sc 
  rather 
  dark 
  brown, 
  with 
  a 
  few 
  smaU 
  incon- 
  

   spicuous 
  dots; 
  caudal 
  cells 
  pale, 
  subhyaline. 
  The 
  picture 
  of 
  the 
  

   wing 
  is 
  that 
  of 
  a 
  dark 
  costal 
  area 
  and 
  the 
  remainder 
  of 
  the 
  wing 
  pale. 
  

   (See 
  fig. 
  24.) 
  

  

  Abdomen: 
  yellowish 
  bro-vsii, 
  a 
  median 
  tergal 
  stripe, 
  broadest 
  on 
  

   the 
  first 
  segment; 
  lateral 
  margin 
  of 
  the 
  tergites 
  darker. 
  

  

  Female. 
  — 
  Length, 
  5.7 
  mm; 
  wing, 
  4.3 
  mm. 
  Larger, 
  the 
  caudal 
  

   cells 
  of 
  the 
  wing 
  darker, 
  numerously 
  dotted 
  and 
  sprinkled 
  with 
  paler. 
  

  

  Habitat 
  — 
  Holotype. 
  — 
  Male, 
  Aguna, 
  Guatemala, 
  C. 
  Am. 
  (G. 
  Eisen, 
  

   coll.). 
  Allotype. 
  — 
  Female, 
  Cayamas, 
  Cuba. 
  March 
  18 
  (E. 
  A. 
  

   Schwarz); 
  (in 
  house). 
  

  

  Type. 
  — 
  In 
  U. 
  S. 
  National 
  Museum 
  collection 
  (No. 
  14925). 
  

  

  ERIOPTERA 
  (MESOCYPHONA) 
  CALOPTERA 
  Say; 
  FEMORANIGRA, 
  new 
  subspecies. 
  

  

  Like 
  caloptera 
  Say 
  m 
  its 
  variegated 
  vertex, 
  yellowish 
  mesonotum, 
  

   wing 
  pattern, 
  etc., 
  but 
  much 
  darker 
  in 
  coloration, 
  especially 
  in 
  the 
  

   posterior 
  femora. 
  

  

  Prsescutal 
  pits 
  separated 
  by 
  a 
  distance 
  not 
  greater 
  than 
  the 
  diame- 
  

   ter 
  of 
  one; 
  located 
  on 
  the 
  proximal 
  edge 
  of 
  the 
  dorsal 
  tlioracic 
  stripes, 
  

   these 
  stripes 
  as 
  wide 
  as, 
  or 
  wider 
  than, 
  the 
  pale 
  dorsal 
  median 
  stripe; 
  

   hind 
  femora 
  largely 
  black, 
  the 
  yellow 
  being 
  confined 
  to 
  the 
  extreme 
  

   tip, 
  the 
  base, 
  and 
  a 
  narrow 
  post 
  medial 
  ring. 
  

  

  This 
  subspecies 
  is 
  closely 
  allied 
  to 
  the 
  more 
  northern 
  caloptera 
  in 
  

   its 
  coloration 
  and 
  structure; 
  the 
  indistinct 
  brown 
  pleural 
  stripes, 
  the 
  

   shape 
  and 
  position 
  of 
  the 
  prsescutal 
  stripes, 
  the 
  wing 
  pattern, 
  etc. 
  

   A 
  notable 
  and 
  apparently 
  constant 
  difference, 
  however, 
  is 
  in 
  the 
  

   posterior 
  femora 
  which 
  are 
  mostly 
  black 
  in 
  the 
  tropical 
  form, 
  the 
  

   antepenultimate 
  (yellow) 
  rhig 
  being 
  narrower 
  than 
  the 
  penulimate 
  

   (black) 
  ring, 
  and 
  other 
  clearly 
  defined 
  differences. 
  In 
  some 
  speci- 
  

   mens 
  the 
  last 
  black 
  ring 
  is 
  contmued 
  to 
  the 
  tip 
  of 
  the 
  femur, 
  obliter- 
  

   ating 
  the 
  yellow 
  apex 
  of 
  the 
  segment. 
  This 
  is 
  apparently 
  merely 
  a 
  

   dark 
  southern 
  form 
  of 
  the 
  species. 
  

  

  Habitat 
  — 
  Holotype. 
  — 
  Female, 
  Juan 
  Vinas, 
  Costa 
  Rica, 
  May 
  2, 
  1910 
  ; 
  

   (P. 
  P. 
  Calvert) 
  (in 
  house). 
  Paratypes. 
  — 
  Three 
  females, 
  with 
  the 
  

   type. 
  

  

  Type. 
  — 
  In 
  Philadelphia 
  Academy 
  of 
  Natural 
  Sciences. 
  

  

  ERIOPTERA 
  (MESOCYPHONA) 
  IMMACULATA, 
  new 
  species. 
  

  

  Vertex 
  brown 
  anteriorly, 
  more 
  yellow 
  behind; 
  mesonotum 
  grayish- 
  

   yellow, 
  stripes 
  broad; 
  pleural 
  stripes 
  distinct; 
  femora 
  with 
  a 
  narrow 
  

   sub-apical 
  band; 
  wings 
  unspotted 
  

  

  