﻿[65] 
  On 
  some 
  Species 
  of 
  Nisoniades. 
  177 
  

  

  had 
  previously 
  come 
  under 
  my 
  observation. 
  The 
  series 
  of 
  six 
  

   gray-centered 
  and 
  black-bordered 
  spots 
  crossing 
  the 
  cell 
  par- 
  

   allel 
  to 
  the 
  outer 
  transverse 
  row, 
  which 
  usually 
  forms 
  an 
  

   interrupted 
  series, 
  in 
  these, 
  blend 
  in 
  a 
  connected 
  band, 
  nearly 
  

   as 
  conspicuous 
  as 
  the 
  outer 
  row. 
  This 
  species, 
  I 
  believe, 
  has 
  

   not 
  been 
  previously 
  reported 
  from 
  Colorado. 
  

  

  Nisoniades 
  Partialis 
  Scudd. 
  

  

  One 
  of 
  the 
  two 
  examples 
  of 
  this 
  species 
  corresponds 
  with 
  

   our 
  usual 
  New 
  York 
  forms, 
  and 
  the 
  other, 
  in 
  the 
  more 
  sub- 
  

   dued 
  tone 
  of 
  its 
  ornamentation, 
  is 
  similar 
  to 
  the 
  individuals 
  

   of 
  our 
  second 
  brood, 
  appearing 
  in 
  July 
  and 
  August. 
  It 
  is 
  

   unfortunate 
  that 
  no 
  dates 
  of 
  capture 
  are 
  appended 
  to 
  these 
  

   specimens. 
  

  

  Nisoniades 
  Persius 
  Scudd. 
  

  

  The 
  examples 
  which 
  I 
  refer 
  to 
  this 
  species, 
  present 
  some 
  

   differences 
  as 
  compared 
  with 
  our 
  eastern 
  forms. 
  In 
  Mr. 
  

   Mead' 
  s 
  Report, 
  ut 
  cit., 
  Mr. 
  Scudder 
  is 
  quoted 
  as 
  having 
  noticed 
  

   some 
  points 
  of 
  difference. 
  Although 
  Mr. 
  Mead 
  represents 
  this 
  

   species 
  as 
  the 
  most 
  common 
  of 
  its 
  genus 
  in 
  Colorado, 
  I 
  have 
  

   but 
  three 
  examples 
  before 
  me 
  ; 
  and 
  upon 
  so 
  small 
  a 
  number, 
  I 
  

   am 
  unable 
  to 
  form 
  a 
  decided 
  opinion. 
  

  

  Nisoniades 
  Juvenalis 
  Fabr. 
  

  

  I 
  have, 
  with 
  some 
  hesitation, 
  labeled 
  several 
  examples 
  

   agreeing 
  among 
  themselves, 
  with 
  this 
  specific 
  name, 
  as 
  I 
  am 
  

   unable 
  to 
  trace 
  any 
  constant 
  features 
  in 
  which 
  they 
  differ 
  from 
  

   some 
  of 
  our 
  New 
  York 
  forms. 
  I 
  am, 
  however, 
  of 
  the 
  opinion, 
  

   1 
  that 
  in 
  the 
  collections 
  made 
  in 
  the 
  vicinity 
  of 
  Albany, 
  two 
  

   species 
  are 
  included 
  in 
  our 
  N. 
  Juvenalis. 
  Marked 
  differences 
  

   are 
  noticeable 
  in 
  size, 
  shape 
  of 
  wings, 
  and 
  markings, 
  which 
  

   are 
  hardly 
  consistent 
  with 
  a 
  single 
  species. 
  The 
  smaller 
  form 
  

   is 
  that 
  in 
  which 
  are 
  seen 
  more 
  pointed 
  wings 
  and 
  narrower, 
  

   less 
  rounded 
  outer 
  margins, 
  and 
  plainer 
  ornamentation. 
  Still, 
  

   I 
  have 
  not 
  been 
  able 
  to 
  discover 
  any 
  marked 
  features 
  by 
  

   which 
  a 
  separation 
  can 
  be 
  made. 
  The 
  larger 
  form 
  with 
  broader 
  

   wings 
  and 
  conspicuous 
  markings 
  is 
  of 
  less 
  frequent 
  occurrence 
  

   than 
  the 
  other. 
  A 
  large 
  series 
  from 
  Center, 
  N. 
  Y., 
  submitted 
  

   some 
  years 
  ago 
  to 
  Messrs. 
  Scudder 
  and 
  Burgess 
  for 
  the 
  ex- 
  

   amination 
  of 
  the 
  genitalia, 
  contained 
  both 
  of 
  these 
  forms, 
  but 
  

   were 
  all 
  returned 
  to 
  me 
  labeled 
  as 
  J¥. 
  Juvenalis. 
  

  

  