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  streak 
  is 
  sometimes 
  broken 
  up 
  into 
  spots. 
  In 
  some 
  specimens 
  the 
  

   white 
  marbling 
  is 
  suppressed 
  and 
  the 
  whole 
  forewing 
  is 
  brown 
  

   while 
  the 
  dorsal 
  streak 
  is 
  only 
  a 
  shade 
  darker 
  than 
  the 
  ground 
  

   colour. 
  

  

  Ab. 
  fissdla, 
  n. 
  ab. 
  

  

  The 
  type 
  is 
  in 
  the 
  Stainton 
  collection 
  at 
  the 
  British 
  Museum. 
  

   It 
  is 
  pale 
  brown 
  with 
  the 
  dorsal 
  streak 
  deep 
  brown, 
  and 
  characterised 
  

   by 
  a 
  median 
  undulating 
  black 
  brown 
  streak 
  running 
  the 
  whole 
  

   length 
  of 
  the 
  forewing 
  from 
  the 
  base 
  to 
  the 
  apex. 
  It 
  is 
  a 
  parallel 
  

   form 
  to 
  ab. 
  fissella 
  of 
  H. 
  radiatella. 
  

  

  Ab. 
  carbondla, 
  Hb. 
  " 
  Samm." 
  421, 
  maurelbis, 
  Stph. 
  Wood. 
  In 
  this 
  

   the 
  whole 
  forewing 
  is 
  nearly 
  black, 
  without 
  markings. 
  Specimens 
  

   approaching 
  this 
  form 
  are 
  not 
  uncommon, 
  and 
  often 
  have 
  the 
  costa 
  

   broadly 
  dark 
  brown. 
  

  

  H. 
  mpiella, 
  CI. 
  " 
  Icon." 
  10, 
  14. 
  

  

  A 
  white 
  black 
  spotted 
  species 
  with 
  chequered 
  fringes. 
  It 
  varies 
  

   somewhat 
  in 
  the 
  extent 
  of 
  the 
  spots. 
  In 
  some 
  specimens 
  certain 
  

   spots 
  coalesce 
  giving 
  a 
  greater 
  amount 
  of 
  black 
  on 
  the 
  forewings. 
  

   The 
  faint 
  clouding 
  noticeable 
  towards 
  the 
  costa 
  and 
  termen 
  is 
  

   ochreous 
  in 
  some 
  examjles 
  while 
  in 
  others 
  this 
  is 
  grey. 
  

  

  Ab. 
  leucophaea, 
  Zell. 
  " 
  Isis," 
  1839., 
  p. 
  188. 
  

  

  In 
  this 
  the 
  white 
  ground 
  colour 
  is 
  much 
  invaded 
  by 
  dusky 
  

   clouding. 
  This 
  species 
  is 
  attached 
  to 
  maple 
  and 
  sycamore. 
  

  

  H. 
  radiatella, 
  Donovan. 
  Wood, 
  " 
  Index," 
  fig. 
  15S9, 
  (1889). 
  

  

  This 
  species 
  is, 
  I 
  think, 
  the 
  most 
  variable 
  Tineid 
  that 
  we 
  have 
  in 
  

   Britain. 
  The 
  only 
  constant 
  point 
  about 
  it 
  is 
  its 
  shape, 
  it 
  varies 
  

   extremely 
  in 
  colour 
  and 
  in 
  the 
  type 
  of 
  its 
  markings. 
  The 
  ground 
  

   colour 
  ranges 
  from 
  nearly 
  white 
  to 
  dark 
  purple 
  brown 
  and 
  probably 
  

   to 
  black. 
  The 
  markings 
  are 
  rarely 
  absent 
  altogether, 
  they 
  may 
  be 
  

   in 
  the 
  form 
  of 
  slight 
  or 
  dark 
  clouds, 
  small 
  or 
  large 
  spots, 
  transverse 
  

   bands 
  or 
  longitudinal 
  streaks. 
  The 
  same 
  specimen 
  may 
  exhibit 
  

   more 
  than 
  one 
  type 
  of 
  marking. 
  Typical 
  examples 
  of 
  these 
  various 
  

   aberrations 
  are 
  sufficiently 
  distinct 
  and 
  it 
  is 
  convenient 
  to 
  have 
  

   names 
  denoting 
  them. 
  In 
  so 
  protean 
  a 
  species 
  many 
  specimens 
  

   will 
  be 
  found 
  which 
  do 
  not 
  strictly 
  conform 
  to 
  any 
  named 
  aberration, 
  

   it 
  seems 
  therefore 
  necessary 
  to 
  take 
  a 
  broad 
  view 
  of 
  these 
  forms, 
  

   otherwise 
  one 
  might 
  be 
  compelled 
  to 
  name 
  a 
  confusing 
  mass 
  of 
  

   minor 
  aberrations. 
  Most 
  of 
  the 
  forms 
  named 
  were 
  so 
  treated 
  under 
  

   the 
  impression 
  that 
  they 
  were 
  separate 
  species. 
  It 
  seems 
  now 
  

   generally 
  accepted 
  that 
  they 
  are 
  merely 
  variations, 
  as 
  the 
  forms 
  run 
  

   more 
  or 
  less 
  into 
  each 
  other, 
  but 
  I 
  am 
  unaware 
  that 
  any 
  attempt 
  

   has 
  been 
  made 
  to 
  settle 
  this 
  point 
  of 
  breeding 
  different 
  forms 
  from 
  

   the 
  same 
  parents. 
  

  

  Donovan's 
  figure 
  of 
  this 
  species 
  (" 
  Nat. 
  His." 
  vol. 
  iii, 
  pi. 
  77, 
  fig. 
  3) 
  

   exhibits 
  a 
  yellow 
  moth 
  with 
  dark 
  red 
  longitudinal 
  markings. 
  In 
  his 
  

   description 
  he 
  says, 
  the 
  moth 
  is 
  bufl" 
  with 
  dark 
  purple 
  rays. 
  This 
  

  

  