﻿BUCKLEKIA 
  PALUDU1T. 
  495 
  

  

  plebejus. 
  According 
  to 
  news 
  from 
  Herr 
  Fischer 
  v. 
  Roslerstarnm, 
  this 
  

   plume 
  occurs 
  also 
  near 
  Berlin 
  (Zeller, 
  his, 
  1841, 
  pp. 
  866-867). 
  

  

  Imago. 
  — 
  12mm. 
  -15mm. 
  Forewings 
  fuscous-brown, 
  with 
  very 
  deep 
  

   cleft, 
  the 
  lobes 
  narrow 
  and 
  pointed; 
  the 
  costa 
  narrowly 
  blackish 
  to 
  the 
  

   first 
  lobal 
  line 
  ; 
  two 
  bright, 
  shiny, 
  silvery-white, 
  transverse 
  lobal 
  lines; 
  

   apices 
  of 
  lobes 
  also 
  white; 
  discal 
  area 
  thickly 
  sprinkled 
  longitudinally 
  

   with 
  white 
  scales; 
  a 
  small 
  white 
  fissural 
  spot 
  at 
  end 
  of 
  fissure, 
  directly 
  

   above 
  a 
  tiny 
  black 
  one; 
  fringes 
  fuscous, 
  with 
  white 
  streaks 
  (sometimes 
  

   edged 
  with 
  black) 
  terminating 
  the 
  transverse 
  lines, 
  and 
  at 
  the 
  apex 
  ; 
  

   several 
  crowded 
  short 
  black 
  scales 
  towards 
  centre 
  of 
  upper 
  and 
  lower 
  

   edges 
  of 
  fissure. 
  The 
  hindwings 
  very 
  deeply 
  cleft 
  ; 
  dark 
  fuscous 
  ; 
  

   fringes 
  not 
  quite 
  so 
  dark 
  as 
  the 
  plumules; 
  there 
  is 
  no 
  trace 
  whatever 
  

   of 
  any 
  scale-tuft, 
  or 
  isolated 
  scales 
  of 
  a 
  specialised 
  character, 
  on 
  the 
  

   3rd 
  plumule.' 
  1 
  ' 
  

  

  Sexual 
  dimorphism. 
  — 
  The 
  $ 
  s 
  are 
  distinctly 
  larger 
  than 
  the 
  ? 
  s, 
  

   averaging 
  from 
  2mm. 
  to 
  3mm. 
  more, 
  with 
  much 
  longer 
  and 
  more 
  slender 
  

   abdomina, 
  wider 
  wings, 
  and 
  generally 
  with 
  somewhat 
  darker 
  ground- 
  

   colour, 
  and 
  more 
  abundant 
  silvery-white 
  scales. 
  The 
  pabulum, 
  

   in 
  the 
  Frey 
  Coll. 
  also 
  show 
  distinctly 
  the 
  smaller 
  size 
  of 
  the 
  2 
  • 
  

   Bankes 
  writes 
  (in 
  litt,), 
  " 
  Although 
  both 
  sexes 
  vary 
  considerably 
  

   in 
  size, 
  there 
  is, 
  on 
  the 
  whole, 
  a 
  marked 
  difference 
  between 
  

   them 
  in 
  this 
  respect, 
  the 
  females 
  averaging 
  about 
  2mm. 
  smaller 
  

   in 
  wing-expanse 
  than 
  the 
  males. 
  In 
  my 
  lengthy 
  series 
  of 
  second- 
  

   brood 
  specimens, 
  all 
  captured, 
  the 
  alar. 
  exp. 
  of 
  the 
  latter 
  runs 
  

   from 
  13mm. 
  to 
  15'5mm., 
  while 
  that 
  of 
  the 
  former 
  is 
  only 
  12mm. 
  to 
  

   13-5mm. 
  I 
  have 
  little 
  doubt 
  that 
  the 
  individuals 
  of 
  the 
  first 
  brood, 
  

   of 
  which 
  I 
  have 
  not 
  sufficient 
  for 
  useful 
  comparison, 
  would, 
  in 
  both 
  

   sexes, 
  average 
  rather 
  larger 
  than 
  those 
  of 
  the 
  second, 
  and 
  my 
  only 
  $ 
  of 
  

   the 
  earlier 
  brood 
  expands 
  14-5mm., 
  although 
  none 
  of 
  the 
  few 
  first-brood 
  

   $ 
  s 
  before 
  me 
  measures 
  more 
  than 
  15mm. 
  The 
  $ 
  s 
  seem 
  a 
  little 
  variable 
  

   in 
  colour, 
  but 
  my 
  limited 
  number 
  of 
  representatives 
  of 
  this 
  sex 
  are, 
  

   on 
  the 
  whole, 
  rather 
  lighter 
  and 
  brighter 
  than 
  the 
  $ 
  s, 
  the 
  brown 
  

   ground 
  colour 
  showing 
  a 
  stronger 
  tendency 
  to 
  be 
  tinged 
  with 
  reddish. 
  

   Owing 
  partly 
  to 
  this, 
  and 
  partly 
  to 
  the 
  white 
  markings 
  being 
  more 
  

   concentrated 
  because 
  the 
  wing 
  expanse 
  is 
  smaller, 
  the 
  females, 
  in 
  

   general, 
  present 
  a 
  rather 
  more 
  variegated 
  appearance, 
  and 
  remind 
  one 
  

   more 
  of 
  0. 
  parvidactylus 
  than 
  do 
  the 
  males. 
  The 
  sexes 
  can 
  be 
  easily 
  

   separated 
  by 
  a 
  glance 
  at 
  the 
  abdomen, 
  that 
  of 
  the 
  $ 
  being 
  long, 
  

   slender 
  throughout, 
  especially 
  anteriorly, 
  and 
  appearing 
  broader 
  

   terminally 
  than 
  elsewhere, 
  while 
  that 
  of 
  the 
  $ 
  is 
  rather 
  shorter, 
  

   markedly 
  stouter, 
  and 
  of 
  a 
  totally 
  different 
  shape, 
  being 
  of 
  greatest 
  

   girth 
  somewhat 
  behind 
  the 
  middle, 
  and 
  tapering 
  thence 
  gradually 
  

   towards 
  the 
  thorax, 
  and 
  rapidly 
  towards 
  the 
  anal 
  extremity. 
  In 
  

   addition, 
  there 
  arise 
  on 
  the 
  abdomen 
  of 
  the 
  male, 
  shortly 
  before 
  the 
  

   termen, 
  which 
  they 
  surround, 
  six 
  separate 
  tufts 
  of 
  hair-scales, 
  r/c, 
  

   two 
  subdorsal 
  (long), 
  two 
  lateral 
  (short), 
  two 
  ventral 
  (long), 
  projecting 
  

   obliquely 
  outwards 
  and 
  backwards. 
  A 
  view 
  from 
  above 
  frequently 
  

   shows 
  clearly 
  the 
  tips 
  of 
  the 
  two 
  subdorsal 
  tufts 
  on 
  either 
  side 
  of 
  the 
  

   tip 
  of 
  the 
  termen 
  proper, 
  which 
  is 
  seen 
  between 
  them 
  at 
  a 
  somewhat 
  

  

  * 
  This 
  is 
  absolutely 
  true 
  of 
  every 
  specimen 
  wo 
  have 
  Been 
  in 
  different 
  collections, 
  

   but 
  Chapman 
  observes 
  that, 
  in 
  some 
  bred 
  specimens, 
  there 
  arc 
  sometimes 
  three 
  

   or 
  four 
  scattered 
  scales 
  of 
  the 
  " 
  tuft 
  " 
  set. 
  YYe 
  have 
  never 
  seen 
  such. 
  

  

  