﻿542 
  BRITISH 
  LEPIDOPTERA. 
  

  

  usually 
  a 
  markedly 
  greater 
  space 
  between 
  the 
  dots 
  and 
  the 
  outer 
  

   margin 
  than 
  is 
  the 
  case 
  in 
  orbicularia. 
  One 
  cannot 
  help 
  noticing 
  

   the 
  somewhat 
  marked 
  similarity 
  between 
  this 
  hybrid 
  and 
  the 
  sub- 
  

   roseata 
  form 
  of 
  pendularia 
  taken 
  by 
  Woodforde 
  near 
  Market 
  Drayton. 
  

   Of 
  this 
  cross, 
  Head 
  obtained 
  a 
  pairing 
  in 
  June, 
  1901, 
  the 
  eggs 
  hatch- 
  

   ing, 
  and 
  larvae 
  feeding 
  up, 
  and 
  the 
  imagines 
  emerging 
  at 
  the 
  end 
  

   of 
  July, 
  1901. 
  Only 
  about 
  25 
  per 
  cent, 
  of 
  the 
  eggs 
  were 
  fertile, 
  

   and 
  very 
  few 
  imagines 
  were 
  reared 
  from 
  this 
  brood. 
  The 
  imagines 
  

   bred 
  exhibited 
  scarcely 
  any 
  variation. 
  

  

  lc. 
  [To 
  p. 
  30.] 
  Zonosoma 
  hybr. 
  headi 
  {orbicularia 
  $ 
  xannulata 
  $ 
  ). 
  

   — 
  All 
  the 
  wings 
  are 
  white, 
  tinged 
  with 
  ochreous, 
  and 
  sprinkled 
  with 
  

   minute 
  dark 
  grey 
  specks, 
  which 
  give 
  them 
  a 
  slight 
  greyish 
  appearance; 
  

   there 
  are 
  two 
  dark 
  purplish-grey, 
  transverse, 
  zigzag 
  lines, 
  which 
  more 
  

   or 
  less 
  coalesce, 
  the 
  outer 
  line 
  being 
  nearly 
  black. 
  The 
  discoidal 
  

   spots 
  are 
  clear 
  and 
  well 
  denned 
  ; 
  between 
  the 
  discoidal 
  spot 
  and 
  the 
  

   base 
  of 
  the 
  wing 
  there 
  is 
  also 
  a 
  third 
  faint, 
  zigzag, 
  dark 
  grey, 
  line, 
  and 
  

   a 
  row 
  of 
  black 
  dots 
  on 
  the 
  outer 
  margin 
  of 
  all 
  the 
  wings. 
  The 
  fringe 
  

   is 
  of 
  the 
  same 
  colour 
  as 
  the 
  wings. 
  The 
  head, 
  thorax, 
  and 
  body, 
  are 
  also 
  

   of 
  the 
  same 
  colour 
  as 
  the 
  wings. 
  Maddison 
  coll. 
  (Head). 
  Two 
  pairings 
  

   of 
  this 
  hybrid 
  were 
  obtained, 
  one 
  in 
  1902, 
  the 
  other 
  in 
  1903. 
  Very 
  few 
  

   of 
  the 
  ova 
  hatched, 
  and 
  only 
  about 
  a 
  dozen 
  imagines 
  were 
  reared 
  in 
  1902, 
  

   and 
  seven 
  in 
  1903. 
  The 
  eggs 
  were 
  in 
  each 
  case 
  laid 
  in 
  June, 
  and 
  the 
  

   resulting 
  larvae 
  fed 
  up 
  quickly, 
  the 
  imagines 
  appearing 
  at 
  the 
  end 
  of 
  

   July. 
  Head 
  also 
  reared 
  the 
  reciprocal 
  cross 
  of 
  Z. 
  hybr. 
  headi, 
  

   obtaining 
  a 
  pairing 
  in 
  1903. 
  Few 
  of 
  the 
  eggs, 
  however, 
  were 
  fertile, 
  

   and 
  only 
  two 
  of 
  the 
  resulting 
  larvae 
  produced 
  pupae. 
  Both 
  of 
  these 
  

   went 
  over 
  the 
  winter 
  ; 
  one 
  emerged, 
  deformed, 
  in 
  1904, 
  and 
  the 
  other 
  

   one 
  died. 
  

  

  4tf. 
  [To 
  p. 
  31.] 
  Nyssia 
  hybr. 
  merana 
  (zonaria 
  $ 
  X 
  lapponaria 
  $ 
  ), 
  

   Burrows, 
  Ent. 
  Rec, 
  xviii., 
  p. 
  132 
  (1906). 
  —The 
  male 
  presents 
  the 
  

   appearance 
  of 
  a 
  dark 
  suffused 
  N. 
  zonaria, 
  thus 
  following 
  the 
  rule 
  of 
  

   resembling 
  the 
  parent 
  of 
  the 
  same 
  sex. 
  There 
  is 
  an 
  entire 
  absence 
  of 
  

   the 
  orange 
  costal 
  streak 
  on 
  the 
  forewing, 
  so 
  distinct 
  in 
  X. 
  lapponaria. 
  

   The 
  wings 
  are 
  not 
  transparent, 
  but 
  well 
  scaled, 
  perhaps 
  a 
  trine 
  whiter 
  

   than 
  in 
  N. 
  zonaria. 
  The 
  subterminal 
  line 
  is 
  completely 
  different 
  from 
  

   that 
  of 
  the 
  male 
  parent, 
  in 
  which 
  it 
  is 
  distinct, 
  unbroken, 
  and 
  direct. 
  

   In 
  the 
  hybrid 
  the 
  line 
  is 
  distinct 
  enough, 
  but 
  wavy, 
  following 
  the 
  

   female 
  parent, 
  N. 
  lapponaria. 
  The 
  central 
  lines 
  enclose 
  a 
  darker 
  

   shade, 
  striking 
  enougb, 
  but 
  I 
  have 
  seen 
  N. 
  zonaria 
  which 
  approach 
  it 
  

   closely 
  in 
  this 
  way. 
  The 
  hindwings 
  do 
  not 
  show 
  the 
  marginal 
  shade 
  

   which 
  is 
  so 
  distinct 
  in 
  N. 
  zonaria, 
  but 
  are 
  crossed 
  by 
  two 
  dark 
  lines, 
  

   only 
  indistinctly 
  marked 
  in 
  X. 
  lapponaria. 
  The 
  female 
  hybrid 
  is 
  

   entirely 
  without 
  the 
  series 
  of 
  orange 
  spots 
  on 
  the 
  central 
  line 
  peculiar 
  

   to 
  N. 
  lapponaria, 
  the 
  female 
  parent, 
  and 
  is 
  also 
  without 
  the 
  transverse 
  

   bands 
  of 
  the 
  male 
  parent. 
  The 
  rudimentary 
  wings 
  are 
  perhaps 
  a 
  trifle 
  

   more 
  developed 
  than 
  in 
  N. 
  zonaria, 
  and 
  about 
  the 
  same 
  as 
  in 
  the 
  case 
  

   of 
  the 
  female 
  parent. 
  The 
  down 
  upon 
  the 
  abdomen 
  is 
  not 
  very 
  

   different 
  from 
  that 
  of 
  the 
  female 
  N. 
  lapponaria. 
  The 
  specimens 
  were 
  

   obtained 
  by 
  Mera, 
  who 
  crossed, 
  in 
  the 
  spring 
  of 
  1905, 
  a 
  $ 
  Nyssia 
  

   zonaria 
  and 
  $ 
  N. 
  lapponaria. 
  The 
  eggs 
  proved 
  fertile, 
  and 
  the 
  

   resulting 
  larvae 
  pupated 
  in 
  due 
  course. 
  The 
  females 
  emerged 
  much 
  

   earlier 
  than 
  the 
  males 
  on 
  the 
  whole, 
  several 
  appearing 
  in 
  early 
  

   January, 
  but 
  pairings 
  of 
  the 
  hybrids 
  were 
  later 
  obtained, 
  yet 
  no 
  ova 
  

  

  