﻿STENOPTILIIDI. 
  315 
  

  

  M. 
  lunaedactyla 
  5-6, 
  in 
  S. 
  pterodactyla 
  6-8, 
  in 
  A. 
  bipuntidactyla 
  6-7, 
  

   and 
  in 
  A. 
  zophodactylus 
  not 
  only 
  are 
  there 
  9, 
  but 
  they 
  are 
  distinctly 
  

   smaller 
  and 
  paler, 
  and 
  the 
  white 
  colour 
  is 
  feebly 
  more 
  delicate. 
  

  

  The 
  Stenopliliine 
  pupa 
  is 
  rather 
  long, 
  slender, 
  and 
  generally 
  highly 
  

   tinted 
  with 
  pink 
  or 
  green 
  shades. 
  It 
  differs 
  in 
  outline 
  from 
  the 
  

   Agdistid 
  pupa, 
  in 
  being 
  rather 
  more 
  swollen 
  in 
  the 
  thoracic 
  region 
  ; 
  

   the 
  pupal 
  skin 
  is 
  extremely 
  delicate 
  and 
  filmy 
  ; 
  the 
  surface 
  apparently 
  

   very 
  smooth, 
  but 
  a 
  lens 
  exhibits 
  numerous 
  fine 
  transverse 
  ribs 
  on 
  the 
  

   abdominal 
  segments. 
  The 
  tubercles 
  are 
  single-haired, 
  the 
  setae 
  retain- 
  

   ing 
  the 
  baton-like 
  character. 
  Really, 
  the 
  tubercles 
  are 
  represented 
  by 
  

   minute 
  knobs, 
  very 
  prominent 
  as 
  to 
  i 
  and 
  ii, 
  almost 
  like 
  little 
  beads 
  

   stuck 
  on, 
  the 
  lower 
  ones 
  are 
  eminences, 
  only 
  they 
  carry 
  minute, 
  trans- 
  

   parent, 
  clubbed 
  hairs, 
  not 
  on 
  their 
  summits, 
  but 
  in 
  depressions 
  on 
  one 
  

   side, 
  i 
  on 
  the 
  anterior, 
  and 
  ii 
  on 
  the 
  posterior, 
  aspect, 
  and 
  so 
  on 
  ; 
  the 
  

   hairs 
  are 
  thus 
  nearly 
  parallel 
  with 
  the 
  pupal 
  surface. 
  The 
  relative 
  

   position 
  of 
  i 
  and 
  ii 
  varies 
  in 
  the 
  different 
  species, 
  and 
  must 
  here 
  be 
  a 
  

   specific, 
  and 
  not 
  a 
  generic, 
  character. 
  In 
  S. 
  graphodactyla 
  (giant 
  

   form), 
  from 
  Larche, 
  the 
  two 
  beads 
  are 
  almost 
  conjoined. 
  In 
  S. 
  var. 
  

   pneumonanthes 
  (from 
  Montreux), 
  they 
  are 
  apart, 
  about 
  3 
  of 
  their 
  own 
  

   diameters. 
  In 
  S. 
  pterodactyla, 
  they 
  are 
  about 
  the 
  same, 
  or 
  a 
  little 
  

   closer, 
  varying 
  somewhat 
  in 
  different 
  specimens. 
  In 
  A. 
  bipuncti- 
  

   dactyla, 
  they 
  are 
  closer, 
  nearly 
  the 
  same 
  as 
  in 
  S. 
  graphodactyla. 
  

   In 
  A. 
  zophodactylus, 
  they 
  are 
  more 
  widely 
  apart, 
  perhaps 
  4 
  diameters 
  

   of 
  bead, 
  which 
  in 
  this 
  species 
  is 
  not 
  much 
  more 
  pronounced 
  than 
  in 
  

   the 
  lower 
  tubercles 
  ; 
  yet 
  in 
  all 
  the 
  species 
  they 
  are 
  on 
  the 
  4th 
  

   and 
  2nd 
  of 
  the 
  small 
  transverse 
  ribs. 
  All 
  have 
  the 
  dorsal 
  flange 
  

   (on 
  the 
  prothorax 
  to 
  3rd 
  abdominal) 
  fairly 
  well 
  marked 
  ; 
  it 
  reasserts 
  

   itself 
  also 
  on 
  the 
  last 
  three 
  segments. 
  The 
  free 
  appendages 
  are 
  the 
  

   2nd 
  and 
  3rd 
  legs 
  and 
  maxillae, 
  which 
  extend 
  as 
  far 
  as 
  the 
  end 
  of 
  the 
  

   5th 
  abdominal 
  segment, 
  supported 
  by 
  a 
  pointed 
  wing 
  extension 
  to 
  

   nearly 
  the 
  posterior 
  margin 
  of 
  the 
  4th 
  abdominal 
  (Chapman). 
  

  

  The 
  Stenoptiliine 
  imago 
  presents 
  the 
  usual 
  Platyptiliid 
  characters, 
  

   e.g., 
  it 
  has 
  a 
  single 
  spina 
  in 
  the 
  ? 
  frenulum 
  ; 
  the 
  general 
  form 
  of 
  the 
  

   Platyptiliid 
  forewing, 
  although 
  the 
  squared-shape 
  of 
  both 
  lobes, 
  

   i.e., 
  exhibiting 
  a 
  costal 
  and 
  anal 
  angle, 
  is 
  somewhat 
  obsolete 
  ; 
  nervure 
  

   II 
  of 
  the 
  forewing 
  having 
  5 
  branches; 
  the 
  same 
  character 
  of 
  the 
  

   divisions 
  of 
  the 
  hindwing, 
  etc. 
  The 
  hindwings, 
  however, 
  have 
  not 
  the 
  tuft 
  

   of 
  black 
  scales 
  on 
  the 
  third 
  plumule, 
  which 
  is 
  a 
  constant 
  character 
  

   of 
  the 
  true 
  Platyptiliine 
  and 
  Oxyptilid 
  imagines. 
  Of 
  the 
  super- 
  

   ficial 
  wing-markings, 
  Hofmann 
  gives 
  (Hie 
  deutsch. 
  Pteroph., 
  pp. 
  68 
  

   et 
  seq.) 
  the 
  following 
  description 
  : 
  " 
  The 
  dot 
  on 
  the 
  inner 
  margin 
  is 
  

   mostly 
  either 
  absent 
  or 
  indistinct, 
  the 
  discal 
  spot, 
  as 
  a 
  rule, 
  present, 
  

   though 
  sometimes 
  only 
  very 
  weakly 
  indicated, 
  or 
  even 
  quite 
  absent. 
  

   The 
  dots 
  at 
  the 
  fissure 
  are 
  always 
  present, 
  though 
  the 
  upper 
  one 
  is 
  

   often 
  very 
  small 
  and 
  indistinct. 
  They 
  lie 
  sometimes 
  close 
  to 
  the 
  

   fissure, 
  and 
  sometimes 
  about 
  1mm. 
  in 
  front 
  of 
  it. 
  A 
  pale 
  transverse 
  

   line 
  on 
  the 
  lobes 
  of 
  the 
  forewings 
  is 
  sometimes 
  fairly 
  distinct 
  on 
  

   both 
  segments, 
  though 
  usually 
  only 
  on 
  the 
  upper 
  one, 
  but 
  sometimes 
  

   only 
  more 
  or 
  less 
  indicated, 
  or 
  even 
  quite 
  absent. 
  The 
  narrower 
  inner 
  

   marginal 
  portion 
  of 
  the 
  forewing 
  is, 
  as 
  a 
  rule, 
  paler 
  in 
  colour 
  than 
  the 
  

   broader 
  costal 
  portion. 
  There 
  is 
  sometimes 
  a 
  thick 
  blackish 
  streak 
  in 
  

   the 
  upper 
  segment, 
  while, 
  in 
  the 
  lower 
  segment, 
  there 
  are 
  two. 
  one 
  

   above 
  the 
  other. 
  These 
  streaks 
  are, 
  however, 
  by 
  no 
  means 
  constant. 
  

  

  