﻿NO. 
  1951. 
  NEW 
  LEPIDOPTERA 
  FROM 
  MEXICO— 
  DYAR. 
  295 
  

  

  brown 
  border 
  and 
  concentric 
  ring; 
  reniform 
  narrow, 
  containing 
  

   bright 
  orange 
  center, 
  a 
  white 
  point 
  at 
  its 
  lower 
  edge 
  continued 
  into 
  a 
  

   fine 
  line 
  and 
  a 
  point 
  at 
  the 
  upper 
  edge; 
  a 
  brown 
  central 
  crescent; 
  a 
  

   blackish 
  shade 
  follows 
  the 
  reniform 
  up 
  to 
  the 
  outer 
  line; 
  subterminal 
  

   line 
  black, 
  waved, 
  broken 
  into 
  a 
  series 
  of 
  spots, 
  of 
  which 
  the 
  lower 
  one 
  

   is 
  large 
  and 
  rounded. 
  Hind 
  wing 
  blackish 
  fuscous, 
  the 
  fringe 
  pale. 
  

   Expanse, 
  28 
  mm. 
  

  

  Cotypes. 
  — 
  Two 
  males. 
  No. 
  14672, 
  U.S.N.M., 
  Misantla, 
  Mexico, 
  April 
  

   and 
  November, 
  1911 
  (R. 
  MiiUer). 
  

  

  Genus 
  MICRATHETIS 
  Hampson. 
  

  

  MICRATHETIS 
  DASARADA 
  Druce. 
  

  

  This 
  small, 
  narrow-winged 
  species 
  shows 
  a 
  tendency 
  to 
  local 
  forms 
  

   in 
  its 
  wide 
  distribution. 
  The 
  Mexican 
  form 
  shows 
  in 
  general 
  a 
  light 
  

   straw-colored 
  ground, 
  without 
  marked 
  olive-brown 
  shades, 
  the 
  outer 
  

   spot 
  at 
  the 
  end 
  of 
  the 
  cell 
  large 
  and 
  round. 
  Costa 
  Rican 
  examples 
  

   before 
  me 
  show 
  marked 
  olive-bro^vn 
  shading 
  within 
  the 
  oblique 
  outer 
  

   line, 
  especially 
  in 
  females, 
  while 
  the 
  discal 
  dot 
  is 
  minute 
  or 
  absent. 
  

   In 
  Brazilian 
  females 
  this 
  tendency 
  is 
  more 
  pronounced, 
  the 
  purplish 
  

   shading 
  being 
  more 
  uniform 
  over 
  the 
  wing, 
  the 
  discal 
  mark 
  nearly 
  

   invisible. 
  Specimens 
  from 
  the 
  Guianas 
  are 
  smaller, 
  the 
  dark 
  shading 
  

   forming 
  a 
  band 
  through 
  the 
  center 
  of 
  the 
  wing, 
  leaving 
  the 
  cell 
  and 
  

   terminal 
  areas 
  pale 
  straw-color. 
  The 
  outer 
  band 
  is 
  less 
  oblique 
  than 
  

   m 
  dasarada. 
  For 
  this 
  form 
  the 
  varietal 
  name 
  dacula 
  may 
  be 
  sug- 
  

   gested. 
  Cotypes 
  of 
  the 
  form 
  dacula, 
  No. 
  14673, 
  U.S.N.M., 
  five 
  males, 
  

   eight 
  females, 
  St. 
  Jean, 
  Maroni 
  River, 
  French 
  Guiana; 
  60 
  miles 
  up 
  

   the 
  Maroni 
  River 
  (one 
  female); 
  Demerara, 
  British 
  Guiana 
  (one 
  

   female), 
  all 
  from 
  Mr. 
  Schaus's 
  collection. 
  

  

  Genus 
  MENOPSIMUS 
  Dyar. 
  

  

  MENOPSIMUS 
  CADUCUS 
  Dyar. 
  

  

  Menopsimus 
  caducus 
  Dyar, 
  Journ. 
  N. 
  Y. 
  Ent. 
  Soc, 
  vol. 
  15, 
  1907, 
  p. 
  110, 
  

   Tkalpochares 
  fractilinea 
  Smith, 
  Ann. 
  N. 
  Y. 
  Acad. 
  Sci., 
  vol. 
  18, 
  1908, 
  p. 
  125. 
  

  

  This 
  species 
  is 
  not 
  known 
  to 
  extend 
  its 
  range 
  to 
  Mexico, 
  but 
  is 
  

   mentioned 
  in 
  this 
  connection 
  on 
  account 
  of 
  its 
  very 
  similar 
  facies 
  to 
  

   the 
  preceding 
  species 
  and 
  to 
  the 
  following 
  new 
  genus. 
  I 
  described 
  

   Menopsimus 
  as 
  a 
  deltoid 
  genus, 
  but 
  according 
  to 
  Sir 
  G. 
  F. 
  Hampson's 
  

   tables 
  it 
  falls 
  in 
  the 
  Acronyctinae. 
  The 
  venation 
  is 
  as 
  follows 
  : 
  Fore 
  

   wing 
  with 
  veins 
  2 
  and 
  3 
  before 
  the 
  angle 
  of 
  the 
  cell, 
  5 
  well 
  above 
  the 
  

   angle, 
  6 
  below 
  the 
  upper 
  angle, 
  7 
  curved 
  to 
  costa, 
  8 
  and 
  9 
  stalked, 
  10 
  

   absent, 
  1 
  1 
  from 
  the 
  cell, 
  no 
  accessory 
  cell 
  ; 
  hind 
  wing 
  with 
  vein 
  2 
  well 
  

   before 
  the 
  angle 
  of 
  the 
  ceU, 
  3 
  and 
  4 
  stalked, 
  5 
  very 
  weak, 
  from 
  the 
  

   middle 
  of 
  the 
  discocellulars 
  to 
  an 
  excavation 
  in 
  the 
  outer 
  margin, 
  6 
  

   and 
  7 
  stalked, 
  8 
  joined 
  to 
  the 
  cell 
  for 
  nearly 
  the 
  basal 
  half. 
  

  

  