﻿46 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol, 
  67 
  

  

  entire 
  length 
  of 
  femur 
  (45:80) 
  and 
  a 
  little 
  shorter 
  than 
  fore 
  coxae 
  

   (50). 
  Prothorax 
  as 
  in 
  Figure 
  57; 
  basal 
  discal 
  cells 
  of 
  forewing 
  as 
  

   in 
  figure 
  58. 
  

  

  Length 
  : 
  12 
  mm. 
  

  

  Holotype. 
  — 
  Tapia, 
  Argentina, 
  2,000 
  feet, 
  W. 
  F. 
  H. 
  Rosenberg 
  

   (U.S.N.M.). 
  

  

  Type.— 
  Male, 
  Cat. 
  No. 
  26713, 
  U.S.N.M. 
  

  

  EMESA 
  (ROTHBERGIA) 
  DIFFINIS, 
  new 
  species. 
  

  

  Female. 
  — 
  A 
  darker 
  species 
  than 
  either 
  of 
  the 
  others, 
  the 
  posterior 
  

   lobe 
  of 
  pronotum, 
  fore 
  wings, 
  and 
  fore 
  femora 
  being 
  largely 
  in- 
  

   fuscated. 
  

  

  The 
  most 
  noticeable 
  structural 
  difference 
  is 
  in 
  the 
  fore-shortened 
  

   and 
  declivitous 
  pronotum 
  which 
  is 
  illustrated 
  in 
  figure 
  61. 
  The 
  

   transverse 
  constriction 
  on 
  head 
  in 
  this 
  species 
  is 
  very 
  shallow 
  as 
  

   compared 
  with 
  that 
  of 
  the 
  others. 
  Length 
  of 
  fore 
  tibia 
  as 
  com- 
  

   pared 
  with 
  fore 
  femur 
  26 
  as 
  to 
  45, 
  of 
  fore 
  coxa 
  25. 
  Basal 
  discal 
  cells 
  

   of 
  forewing 
  as 
  in 
  figure 
  60. 
  

  

  Length, 
  9 
  mm. 
  

  

  Holotype.— 
  Bolivia, 
  W. 
  M. 
  Mann 
  (U.S.N.M.). 
  

  

  Type.— 
  Female, 
  Cat. 
  No. 
  26714, 
  U.S.N.M. 
  

  

  UNPLACED 
  SPECIES. 
  

  

  difllcilis 
  (Wcstcrniannia) 
  Dohrn, 
  A. 
  Emesina, 
  1860, 
  p. 
  251 
  [Colombia]. 
  

   tcnerrima 
  (Wcstcrmannia) 
  Dohrn, 
  A. 
  Emesina. 
  1860, 
  p. 
  251 
  [Porto 
  Rico] 
  

  

  We 
  are 
  unable 
  to 
  place 
  these 
  species 
  in 
  our 
  keys 
  without 
  fuller 
  

   knowledge 
  of 
  the 
  characters 
  of 
  their 
  types. 
  

  

  We 
  have 
  been 
  unable 
  to 
  enter 
  into 
  communication 
  with 
  the 
  author- 
  

   ities 
  who 
  have 
  the 
  specimens 
  in 
  charge 
  but 
  W. 
  E. 
  China 
  of 
  the 
  

   British 
  Museum 
  has 
  supplied 
  data 
  dealing 
  with 
  the 
  characters 
  of 
  

   the 
  specimens 
  that 
  are 
  identified 
  as 
  these 
  species 
  in 
  that 
  institution. 
  

   Both 
  have 
  3-segmented 
  fore 
  tarsi 
  which 
  would 
  seem 
  to 
  ally 
  them 
  

   closely 
  with 
  Emesa, 
  but 
  the 
  basal 
  discal 
  cell 
  of 
  forewings 
  has 
  a 
  short 
  

   vein 
  emanating 
  from 
  it 
  as 
  in 
  Stenolemus 
  (fig. 
  62). 
  The 
  basal 
  stout 
  

   spine 
  on 
  ventral 
  surface 
  of 
  fore 
  femur 
  is 
  directed 
  straight 
  down- 
  

   ward 
  as 
  in 
  Emesa 
  and 
  the 
  forewing 
  is 
  rounded 
  at 
  apex, 
  not 
  at 
  all 
  

   concave 
  behind 
  tip. 
  In 
  tenen^inid 
  the 
  peduncle 
  of 
  prothorax 
  is 
  

   longer 
  while 
  in 
  difficilis 
  it 
  is 
  shorter 
  than 
  the 
  anterior 
  lobe. 
  Mr. 
  

   China 
  also 
  writes 
  that 
  the 
  subapical 
  antennal 
  segment 
  in 
  difflcUis 
  

   is 
  much 
  longer 
  than 
  the 
  apical. 
  In 
  the 
  species 
  of 
  related 
  genera 
  ex- 
  

   amined 
  by 
  us 
  this 
  is 
  never 
  the 
  case, 
  the 
  third 
  being 
  shorter 
  than 
  the 
  

   fourth. 
  There 
  is, 
  however, 
  in 
  some 
  species 
  a 
  slightly 
  indicated 
  

   suture 
  just 
  before 
  the 
  apical 
  swollen 
  part 
  of 
  fourth 
  segment 
  which 
  

   may 
  be 
  mistaken 
  for 
  a 
  true 
  joint, 
  in 
  which 
  case 
  the 
  antenna 
  would 
  

  

  