﻿]76 
  Thirtieth 
  Report 
  ox 
  the 
  State 
  Museum. 
  [64] 
  

  

  dark 
  ground. 
  The 
  margins 
  of 
  the 
  wings 
  bear 
  a 
  black 
  mar- 
  

   ginal 
  line, 
  obsolete 
  toward 
  the 
  apex 
  of 
  the 
  primaries. 
  

  

  Expanse 
  of 
  wings, 
  1 
  .20 
  inch 
  : 
  length 
  of 
  body, 
  .48 
  inch. 
  

  

  Habitat. 
  — 
  Colorado. 
  

  

  I 
  venture, 
  from 
  a 
  single 
  example, 
  to 
  designate 
  this 
  as 
  a 
  dis- 
  

   tinct 
  species, 
  in 
  consideration 
  of 
  the 
  entirely 
  different 
  aspect 
  

   it 
  presents 
  from 
  the 
  other 
  forms. 
  It 
  is 
  one 
  of 
  the 
  smallest 
  

   of 
  our 
  species, 
  about 
  equal 
  to 
  JV. 
  Ausonius 
  ; 
  has 
  unusually 
  

   rounded 
  wings, 
  and 
  is 
  more 
  distinctly 
  marked 
  than 
  any 
  other 
  

   species, 
  except 
  JST. 
  Martialis, 
  from 
  which 
  it 
  differs 
  materially 
  

   in 
  the 
  shape 
  of 
  its 
  wings 
  and 
  its 
  transverse 
  band 
  of 
  spots 
  less 
  

   inflected 
  at 
  its 
  last 
  fourth 
  toward 
  the 
  outer 
  margin. 
  

  

  I 
  have 
  no 
  opportunity 
  of 
  determining 
  at 
  the 
  present, 
  if 
  the 
  

   above 
  may 
  not 
  be 
  one 
  of 
  the 
  two 
  species 
  from 
  Colorado, 
  to 
  

   which 
  Mr. 
  Scudder 
  has 
  given 
  the 
  MS. 
  names 
  of 
  I\ 
  T 
  . 
  Petronius 
  

   and 
  J¥. 
  Rutilius. 
  in 
  Lieut. 
  Wheeler's 
  Report 
  upon 
  Geo- 
  

   graphical 
  and 
  Geological 
  Explorations 
  and 
  Surveys 
  West 
  

   of 
  the 
  One 
  Hundredth 
  Meridian, 
  1875, 
  pp. 
  786, 
  787.* 
  

  

  Through 
  the 
  kindness 
  of 
  Mr. 
  W. 
  H. 
  Edwards, 
  I 
  have 
  been 
  

   permitted 
  to 
  examine 
  a 
  number 
  of 
  examples 
  of 
  Nisoxiades 
  

   collected 
  in 
  1 
  877 
  by 
  Mr. 
  H. 
  M. 
  Morrison, 
  in 
  Colorado. 
  They 
  

   were 
  all 
  perfectly 
  fresh, 
  in 
  fine 
  condition 
  for 
  examination, 
  and 
  

   were 
  as 
  follows 
  : 
  

  

  Nisoniades 
  Icelus 
  Lintn. 
  

  

  Several 
  examples 
  did 
  not 
  differ, 
  apparently, 
  in 
  the 
  slight- 
  

   est 
  particular 
  from 
  New 
  York 
  specimens, 
  except 
  in 
  one 
  small 
  

   individual, 
  of 
  less 
  than 
  an 
  inch 
  expanse 
  of 
  wings, 
  in 
  which 
  

   the 
  pale 
  color, 
  indistinct 
  ornamentation, 
  and 
  small 
  size, 
  are, 
  

   in 
  all 
  probability, 
  the 
  result 
  of 
  imperfect 
  development 
  in 
  the 
  

   larval 
  stage. 
  One 
  specimen 
  of 
  this 
  species 
  is 
  reported 
  by 
  Mr: 
  

   Mead, 
  loc. 
  cit., 
  as 
  having 
  been 
  taken 
  in 
  Central 
  Colorado, 
  but 
  

   in 
  Edwards' 
  Catalogue 
  of 
  Lepidoptera 
  (1877), 
  its 
  greatest 
  

   western 
  distribution 
  is 
  given 
  as 
  Illinois. 
  

  

  Nisoniades 
  Brizo 
  Boisd.-Lec. 
  

  

  The 
  examples 
  of 
  this 
  species 
  in 
  their 
  bright 
  coloring 
  and 
  

   distinct 
  ornamentation 
  were 
  more 
  beautiful 
  than 
  any 
  which 
  

  

  ♦Chapter 
  VIII 
  Report 
  upon 
  the 
  Collections 
  of 
  Diurnal 
  Lepidoptera 
  made 
  in 
  Colorado, 
  

   Utah, 
  New 
  Mexico 
  and 
  Arizona, 
  during 
  ttre 
  years 
  1S71-1874. 
  By 
  Theodore 
  L. 
  Mead, 
  pp. 
  738, 
  

   794 
  ; 
  plates 
  xxxv-xxxix. 
  

  

  