﻿202 
  Thirtieth 
  Report 
  on 
  the 
  State 
  Museum. 
  [90] 
  

  

  Engr., 
  blanda 
  Haw., 
  super 
  stes 
  Steph., 
  and 
  leucoptera 
  Beck. 
  

   But 
  the 
  difference 
  of 
  color 
  between 
  our 
  form 
  and 
  the 
  Euro- 
  

   pean 
  does 
  not 
  come 
  within 
  the 
  range 
  of 
  variation 
  thus 
  far 
  

   shown 
  in 
  any 
  of 
  the 
  species 
  accepted 
  as 
  common 
  to 
  the 
  two 
  

   countries. 
  

  

  These 
  colorational 
  differences 
  have 
  been 
  critically 
  studied 
  

   by 
  Dr. 
  Speyer, 
  during 
  the 
  comparisons 
  in 
  which 
  he 
  has 
  been 
  

   for 
  some 
  time 
  engaged, 
  of 
  the 
  identical 
  and 
  closely 
  allied 
  Noc- 
  

   tuidse 
  of 
  Europe 
  and 
  America, 
  and 
  some 
  of 
  the 
  results 
  of 
  

   which 
  have 
  been 
  given 
  in 
  a 
  series 
  of 
  papers, 
  four 
  in 
  number, 
  

   communicated 
  to 
  the 
  Entomologische 
  Zeitung 
  zu 
  Stettin 
  for 
  

   the 
  years 
  1870 
  and 
  1875. 
  In 
  his 
  second 
  paper 
  on 
  Europdisch- 
  

   amerikanisclie 
  Verio 
  andtscJiaf 
  ten, 
  p. 
  102, 
  these 
  differences 
  

   (probable 
  climatic 
  modifications) 
  are 
  so 
  admirably 
  presented, 
  

   that 
  a 
  translation 
  of 
  that 
  portion 
  of 
  the 
  paper, 
  kindly 
  fur- 
  

   nished 
  for 
  the 
  purpose 
  by 
  Mr. 
  Grote, 
  cannot 
  but 
  prove 
  most 
  

   acceptable 
  to 
  those 
  engaged 
  in 
  the 
  study 
  of 
  the 
  Noctuidse 
  

   who 
  may 
  not 
  be 
  able 
  to 
  avail 
  themselves 
  of 
  the 
  original. 
  

  

  "In 
  the 
  gray 
  and 
  brown 
  colors 
  usual 
  to 
  the 
  Noctuidse, 
  

   arising 
  from 
  a 
  mixture 
  of 
  black, 
  white 
  and 
  red, 
  the 
  American 
  

   specimens, 
  as 
  a 
  rule, 
  show 
  less 
  red 
  than 
  the 
  European, 
  and 
  

   more 
  black. 
  

  

  " 
  This 
  appears 
  generally 
  in 
  the 
  color 
  of 
  the 
  abdomen 
  and 
  the 
  

   hind 
  wings; 
  t4ie 
  brown-gray 
  of 
  the 
  European 
  forms 
  becomes 
  

   clear 
  gray 
  or 
  blackish-gray 
  in 
  the 
  American. 
  The 
  red 
  cast 
  

   which 
  shows 
  on 
  the 
  gray 
  under 
  surf 
  ace 
  of 
  the 
  wings 
  of 
  many 
  

   brown 
  species, 
  especially 
  on 
  the 
  edges, 
  becomes 
  very 
  faint 
  in 
  

   American 
  varieties, 
  and 
  is 
  even, 
  at 
  times, 
  wanting. 
  The 
  red 
  

   brown 
  of 
  the 
  back 
  and 
  fore-wings 
  becomes 
  more 
  gray, 
  black- 
  

   ish 
  or 
  bluish. 
  A 
  stronger 
  mixture 
  of 
  black 
  darkens 
  the 
  colors 
  

   of 
  many 
  American 
  forms. 
  The 
  ornamentation 
  (such 
  as 
  costal 
  

   marks 
  and 
  sagittate 
  points) 
  is 
  often 
  made 
  more 
  distinct 
  and 
  

   coarser 
  ; 
  the 
  transverse 
  lines 
  and 
  discal 
  spots 
  are 
  thrown 
  more 
  

   into 
  relief 
  by 
  their 
  deeper 
  black 
  defining 
  lines. 
  

  

  "But, 
  in 
  opposition 
  to 
  this 
  rule, 
  with 
  regard 
  to 
  gray 
  and 
  

   brown 
  colors, 
  those 
  arising 
  from 
  a 
  mixture 
  of 
  yellow 
  and 
  red, 
  

   show 
  more 
  red 
  in 
  American 
  specimens 
  ; 
  and 
  where 
  there 
  is 
  a 
  

   mixture 
  of 
  black 
  with 
  these 
  latter 
  colors, 
  producing 
  a 
  rust- 
  

   color, 
  the 
  black 
  is 
  less 
  perceptible, 
  as 
  for 
  example, 
  in 
  the 
  case 
  

   of 
  Orthosia 
  ferrugineoides, 
  Hydroscia 
  nictitans, 
  Plusia 
  

   Putnami 
  and 
  Brephos 
  infans. 
  

  

  "If 
  there 
  is 
  any 
  change 
  in 
  the 
  shape 
  of 
  the 
  wings, 
  it 
  seems 
  

  

  