﻿[123] 
  Notes 
  on 
  some 
  Lepidoptera. 
  235 
  

  

  themselves 
  to 
  really 
  constitute 
  a 
  single 
  species. 
  I 
  do 
  not 
  doubt 
  

   but 
  that, 
  from 
  these, 
  other 
  species 
  will 
  eventually 
  be 
  separated, 
  

   and 
  it 
  is 
  probable 
  that 
  ample 
  material 
  has 
  already 
  been 
  

   accumulated 
  for 
  the 
  purpose, 
  in 
  the 
  two 
  hundred 
  or 
  more 
  

   " 
  tessellata 
  forms" 
  in 
  my 
  possession 
  which 
  are 
  awaiting 
  a 
  

   convenient 
  time 
  for 
  their 
  critical 
  study. 
  

  

  Agrotis 
  perpolita 
  Morr. 
  

  

  From 
  a 
  cursory 
  inspection 
  of 
  the 
  female 
  of 
  this 
  species, 
  it 
  

   would 
  probably 
  be 
  referred 
  to 
  A. 
  mlleripennis, 
  with 
  which 
  

   it 
  is 
  compared 
  in 
  the 
  original 
  description. 
  A 
  closer 
  examin- 
  

   ation, 
  however, 
  would 
  disclose 
  several 
  points 
  of 
  difference, 
  

   the 
  more 
  prominent 
  of 
  which 
  are 
  the 
  following 
  : 
  

  

  The 
  head, 
  wings 
  and 
  thorax 
  are 
  nearly 
  black, 
  having 
  only 
  

   a 
  brown 
  reflection 
  : 
  in 
  A. 
  velleripennis, 
  although 
  described 
  as 
  

   coal-black, 
  they 
  are 
  of 
  a 
  dark 
  brown 
  shade 
  in 
  all 
  the 
  exam- 
  

   ples 
  before 
  me, 
  some 
  of 
  which 
  are 
  quite 
  fresh. 
  

  

  The 
  usual 
  transverse 
  lines 
  in 
  velvety- 
  black, 
  which 
  are 
  dis- 
  

   tinctly 
  to 
  be 
  seen 
  in 
  A. 
  velleripennis, 
  are 
  in 
  this 
  entirely 
  

   wanting. 
  Its 
  orbicular 
  spot 
  differs 
  from 
  the 
  ordinary 
  shape, 
  

   in 
  that 
  it 
  is 
  elongated 
  in 
  the 
  direction 
  of 
  the 
  cell, 
  and, 
  in 
  two 
  

   of 
  the 
  three 
  examples 
  examined, 
  pyriform 
  in 
  outline, 
  having 
  

   the 
  contracted 
  portion 
  directed 
  toward 
  the 
  base 
  of 
  the 
  wing 
  : 
  

   in 
  its 
  elongation, 
  it 
  resembles 
  that 
  of 
  A, 
  clandestinely 
  but 
  the 
  

   normal 
  shape 
  of 
  the 
  spot 
  in 
  that 
  species 
  is 
  acutely 
  ellipsoidal. 
  

  

  The 
  legs 
  and 
  spines, 
  which 
  in 
  A. 
  velleripennis 
  are 
  distinctly 
  

   annulated 
  with 
  pale 
  scales, 
  are 
  much 
  less 
  conspicuously 
  ringed 
  

   in 
  this. 
  

  

  The 
  males 
  of 
  the 
  two 
  species 
  — 
  from 
  the 
  contrast 
  presented 
  

   in 
  their 
  secondaries 
  — 
  are 
  not 
  liable 
  to 
  be 
  confounded; 
  those 
  of 
  

   A. 
  velleripennis 
  being 
  white, 
  subhyaline, 
  with 
  a 
  median 
  line 
  of 
  

   nervular 
  spots, 
  more 
  or 
  less 
  distinct, 
  and 
  a 
  very 
  narrow 
  ter- 
  

   minal 
  bordering 
  of 
  brown, 
  and 
  in 
  A. 
  perpolita 
  smoky 
  brown, 
  

   with 
  a 
  broad 
  darker 
  border. 
  There 
  is 
  also 
  a 
  marked 
  differ- 
  

   ence 
  in 
  their 
  antennal 
  structure 
  — 
  the 
  serrations 
  in 
  the 
  latter 
  

   species 
  being 
  not 
  half 
  so 
  long 
  or 
  so 
  strong 
  as 
  in 
  the 
  former. 
  

  

  This 
  species 
  seems 
  to 
  be 
  quite 
  rare. 
  The 
  original 
  specimen 
  

   was 
  from 
  Orono, 
  Maine. 
  It 
  was 
  unknown 
  to 
  Prof. 
  Grote, 
  

   previous 
  to 
  his 
  identification, 
  from 
  the 
  published 
  description, 
  

   of 
  the 
  examples 
  from 
  Mr. 
  Hill's 
  collection. 
  Three 
  examples 
  

   were 
  taken 
  by 
  Mr. 
  Hill 
  at 
  Center, 
  N. 
  Y., 
  on 
  August 
  16th, 
  30th 
  

  

  