﻿164 
  BRITISH 
  LEPIDOPTERA. 
  

  

  chocolate-brown, 
  inclining 
  to 
  blackish 
  ; 
  fringes 
  black 
  = 
  var. 
  (et 
  ab.) 
  taeniadactylus, 
  

   South. 
  

  

  4. 
  As 
  in 
  3, 
  but 
  the 
  costal 
  triangle 
  rather 
  less 
  distinct, 
  and 
  fringes 
  white 
  = 
  ab. 
  

   petradactyla, 
  Hb. 
  

  

  5. 
  Groundcolour 
  yellow 
  (bright 
  ochreous), 
  and 
  confined 
  to 
  the 
  transverse 
  lobal 
  

   lines 
  and 
  inner 
  marginal 
  half 
  of 
  wing 
  ; 
  the 
  rest 
  suffused 
  with 
  red 
  brown 
  ; 
  the 
  costal 
  

   triangle, 
  lobal 
  bands, 
  and 
  inner 
  marginal 
  lineolae 
  nearly 
  black 
  = 
  calodactyla, 
  Hb. 
  

  

  We 
  note 
  the 
  Bossekop 
  examples 
  as 
  being 
  particularly 
  bright 
  in 
  

   colour, 
  but 
  still 
  they 
  are 
  very 
  like 
  the 
  Silesian 
  and 
  central 
  European 
  

   type, 
  although 
  Wocke 
  notes 
  those 
  taken 
  at 
  the 
  foot 
  of 
  the 
  Scaaddavara, 
  

   as 
  a 
  little 
  smaller 
  (21mm. 
  -22mm.) 
  than 
  those 
  from 
  the 
  Riesengebirge, 
  

   whilst 
  Fuch's 
  doronicella 
  is, 
  like 
  petradactyla, 
  a 
  merely 
  slight 
  

   modification 
  of 
  South's 
  taeniadactylus. 
  Zetterstedt 
  recognised 
  it 
  as 
  a 
  

   variable 
  species, 
  and 
  gives 
  (Ins. 
  Lapp., 
  p. 
  1012) 
  descriptions 
  of 
  the 
  

   following 
  Scandinavian 
  forms: 
  

  

  (1) 
  Alis 
  anticis 
  flavis, 
  atomis 
  brunneo-ochraceis 
  adspersis, 
  macula 
  costali 
  

   triangulari 
  mox 
  pone 
  medium 
  brunnea 
  albo-terminata, 
  margine 
  interno 
  fasciculis 
  

   2 
  cum 
  ciliis 
  immixtis 
  fusco-brunneis. 
  Long. 
  al. 
  exp. 
  circiter 
  | 
  poll. 
  

  

  (2) 
  var. 
  a. 
  Alis 
  anticis 
  flavis, 
  macula 
  costali 
  mox 
  pone 
  medium 
  margineque 
  

   apicali 
  summo, 
  brunneis 
  ; 
  reliqua 
  ut 
  in 
  diagnosi. 
  

  

  (3). 
  var. 
  b. 
  Alis 
  anticis 
  flavis, 
  macula 
  costali 
  mox 
  pone 
  medium, 
  margineque 
  

   apicali 
  late 
  brunneis, 
  hoc 
  striga 
  pallida 
  margini 
  parallela 
  notato 
  ; 
  reliqua 
  ut 
  in 
  

   diagnosi. 
  

  

  His 
  var. 
  c, 
  " 
  Similis 
  var. 
  b, 
  sed 
  paullo 
  obscurior, 
  cinerascens," 
  is 
  

   no 
  doubt 
  gonodactyla. 
  Zeller 
  notes 
  that 
  Mann's 
  Pisa 
  specimens 
  do 
  

   not 
  in 
  the 
  least 
  differ 
  from 
  the 
  Sudeten 
  examples. 
  He 
  also 
  says 
  that 
  

   Herrich-Schaffer's 
  fig. 
  7 
  (noted 
  as 
  nemoralis) 
  is 
  of 
  too 
  pure 
  a 
  yellow 
  

   for 
  true 
  nemoralis 
  $ 
  , 
  the 
  spaces 
  between 
  the 
  costal 
  triangle 
  and 
  the 
  

   transverse 
  line 
  of 
  the 
  upper 
  lobe 
  being 
  too 
  narrow 
  and 
  the 
  lobes 
  of 
  

   too 
  yellow 
  a 
  ground-colour 
  and 
  without 
  white 
  dusting 
  ; 
  and 
  adds 
  

   that, 
  as 
  the 
  underside 
  is 
  not 
  depicted, 
  both 
  Herrich-Schaffer's 
  figures 
  

   may 
  serve 
  as 
  very 
  successful 
  representations 
  of 
  zetterstedtii, 
  if 
  we 
  leave 
  

   out 
  of 
  consideration 
  the 
  size 
  of 
  the 
  first 
  and 
  the 
  subjoined 
  measure- 
  

   ment 
  of 
  the 
  second. 
  The 
  following 
  are 
  the 
  already 
  described 
  forms: 
  

  

  a. 
  var. 
  (et 
  ab.) 
  zetterstedtii, 
  Zell. 
  — 
  Capillis 
  in 
  fasciculum 
  brevem 
  frontalem 
  

   productis 
  ; 
  alis 
  anterioribus 
  dilute 
  ochraceis, 
  marginibus 
  brunnescentibus, 
  triangulo 
  

   costali 
  ante 
  fissuram 
  cinnamomeo, 
  striga 
  laciniarum 
  pallida 
  ; 
  in 
  digiti 
  tertii 
  dorso 
  

   medio 
  lineola 
  atro-squamata 
  (Zeller, 
  Isis, 
  1841, 
  p. 
  777). 
  

  

  Zeller's 
  description 
  of 
  the 
  ordinary 
  central 
  European 
  form 
  under 
  

   this 
  name 
  was 
  not 
  made 
  in 
  ignorance 
  of 
  the 
  early 
  Hiibnerian 
  names. 
  

   He 
  fully 
  recognised 
  that 
  Hiibner's 
  fig. 
  7 
  calodactyla 
  was 
  a 
  brightly 
  

   coloured 
  example 
  of 
  this 
  species, 
  his 
  only 
  doubt 
  in 
  applying 
  the 
  latter 
  

   name 
  to 
  the 
  species 
  arising 
  over 
  the 
  fact 
  that 
  Hiibner 
  figured 
  else- 
  

   where 
  the 
  larva 
  of 
  cosmodactyla 
  (acanthodactyla) 
  under 
  the 
  same 
  name. 
  

  

  /3. 
  ab. 
  (et 
  var.) 
  petradactyla, 
  Hb., 
  "Eur. 
  Schmett.," 
  Aluc. 
  pi. 
  vii., 
  figs. 
  37-38 
  

   (1823). 
  — 
  Hiibner's 
  figure 
  may 
  be 
  described 
  as 
  having 
  the 
  forewings 
  ochreous, 
  

   shaded 
  with 
  brown 
  along 
  the 
  costal 
  and 
  inner 
  margins 
  ; 
  the 
  costal 
  triangle 
  

   brownish-red, 
  rather 
  indistinct 
  ; 
  the 
  pale 
  transverse 
  band 
  at 
  base 
  of 
  triangle 
  (just 
  

   before 
  fissure) 
  and 
  the 
  median 
  patch 
  only 
  pale 
  ochreous 
  ; 
  the 
  lobal 
  transverse 
  line 
  

   whitish, 
  edged 
  externally 
  with 
  darker, 
  the 
  whole 
  lobal 
  area 
  dark 
  ; 
  fringes 
  white 
  

   with 
  black 
  basal 
  line. 
  Hindwings 
  unicolorous 
  reddish-grey, 
  fringes 
  dark 
  grey, 
  no 
  

   dark 
  patch 
  to 
  third 
  feather. 
  

  

  There 
  can 
  be 
  no 
  possible 
  doubt 
  whatever 
  that 
  this 
  insect 
  belongs 
  

   here. 
  This 
  has 
  been 
  acknowledged 
  by 
  Zeller, 
  Hofmann, 
  and 
  most 
  

   other 
  serious 
  students 
  of 
  the 
  superfamily. 
  Zeller 
  notes 
  (Linn. 
  Ent., 
  

   vi., 
  pp. 
  333-4) 
  of 
  Hiibner's 
  petradactyla 
  (figs. 
  37-38) 
  that 
  the 
  differences 
  

   between 
  the 
  figures 
  and 
  his 
  zetterstedtii 
  are 
  probably 
  entirely 
  due 
  to 
  the 
  

   poor 
  condition 
  of 
  the 
  specimens 
  figured 
  by 
  Hiibner, 
  these 
  differences 
  (as 
  

  

  