﻿CROMBRUGGHIA 
  DISTANS. 
  463 
  

  

  the 
  nose-spine 
  of 
  Platyptilia, 
  and 
  are, 
  no 
  doubt, 
  different 
  structures, 
  

   being 
  close 
  down 
  to 
  the 
  labrum, 
  but 
  with 
  room 
  between 
  for 
  one 
  hair 
  

   (about 
  0'3mm.) 
  ; 
  each 
  spine 
  carries, 
  at 
  its 
  extremity, 
  a 
  hair 
  (0*5mm. 
  

   long). 
  The 
  spine 
  itself 
  is 
  short 
  (Olmm.), 
  apparently 
  white, 
  and 
  the 
  

   hair 
  points 
  backward 
  nearly 
  parallel 
  to 
  the 
  ventral 
  surface. 
  Above 
  it, 
  

   at 
  the 
  base 
  of 
  the 
  antenna?, 
  are 
  two 
  hairs 
  on 
  either 
  side 
  (the 
  antenna- 
  

   basal 
  hairs). 
  The 
  prothoracic 
  piece, 
  beautifully 
  sculptured 
  in 
  wrinkles 
  

   and 
  pits, 
  bears 
  three 
  hairs, 
  and 
  (in 
  dehiscence) 
  carries 
  at 
  the 
  end 
  a 
  com- 
  

   paratively 
  large 
  sheet 
  of 
  membrane 
  ami 
  the 
  eyepiece, 
  the 
  membrane 
  

   having 
  more 
  than 
  twice 
  the 
  area 
  of 
  prothorax 
  and 
  eyepiece 
  together 
  ; 
  

   an 
  evanescent 
  line, 
  O07mm. 
  long, 
  on 
  the 
  dorsal 
  margin 
  of 
  this, 
  is 
  

   probably 
  the 
  dorsal 
  headpiece. 
  The 
  base 
  of 
  the 
  antenna 
  has 
  high, 
  

   branched, 
  transverse 
  ribs 
  (white?), 
  dwindling 
  lower 
  down. 
  The 
  wing- 
  

   base 
  is 
  marked 
  by 
  a 
  raised 
  longitudinal 
  ridge 
  with 
  a 
  series 
  of 
  nodules, 
  

   and 
  a 
  second 
  less-marked, 
  similarly 
  nodulated, 
  ridge, 
  is 
  just 
  ventral 
  to 
  

   the 
  first. 
  The 
  hindwing 
  ends 
  just 
  below 
  the 
  spiracle 
  of 
  the 
  2nd 
  

   abdominal 
  segment. 
  All 
  the 
  segments 
  are 
  transversely 
  ridged, 
  with 
  

   12-20 
  ribs; 
  these 
  are 
  smooth 
  and 
  wave-like, 
  with 
  no 
  side 
  valleys. 
  

   The 
  fine 
  sculpture 
  consists 
  of 
  closely-set 
  minute 
  round 
  pits, 
  and, 
  on 
  

   the 
  intersegmental 
  membrane, 
  the 
  appearance 
  is 
  of 
  pits 
  rather 
  than 
  of 
  

   tessellated 
  pavement. 
  There 
  is 
  not 
  detected 
  any 
  variation 
  from 
  this 
  

   pitting 
  (into 
  spicules, 
  smoothness, 
  etc.). 
  The 
  mandibles 
  meet 
  in 
  the 
  

   middle 
  line, 
  with 
  the 
  triangular 
  labrum 
  above, 
  and 
  a 
  minute 
  diamond 
  

   of 
  labium 
  below. 
  The 
  maxilla? 
  disappear 
  below 
  the 
  legs 
  (as 
  usual), 
  at 
  

   about 
  2-5mm. 
  from 
  the 
  base, 
  but 
  show 
  again 
  between 
  the 
  2nd 
  legs 
  in 
  

   the 
  free 
  spine. 
  This 
  includes 
  the 
  wing-tips 
  and 
  the 
  3rd 
  tarsi 
  (behind), 
  

   the 
  wings 
  being 
  a 
  fraction 
  short 
  of 
  the 
  other 
  (6) 
  items 
  that 
  are 
  all 
  but 
  

   level. 
  The 
  free 
  spine 
  is 
  about 
  l*5mm. 
  beyond 
  the 
  attachment 
  to 
  the 
  3rd 
  

   abdominal 
  segment. 
  Beyond 
  the 
  nodules 
  on 
  the 
  wing- 
  spine, 
  there 
  is 
  

   no 
  trace 
  of 
  hair-process 
  or 
  spine 
  on 
  any 
  of 
  the 
  appendages. 
  The 
  

   cremastral 
  spine 
  is 
  flat 
  vertically, 
  with 
  angular 
  edges, 
  narrowing 
  thence 
  

   dorsally 
  to 
  two 
  dorsal 
  ridges, 
  which 
  are 
  high 
  and 
  narrow. 
  Its 
  form 
  

   is, 
  therefore, 
  in 
  section, 
  quadrangular, 
  with 
  the 
  ventral 
  side 
  as 
  long 
  

   as 
  any 
  two 
  others. 
  The 
  cremastral 
  hooks, 
  both 
  of 
  forward 
  and 
  terminal 
  

   set, 
  are 
  slender, 
  long, 
  and 
  abundant. 
  There 
  are 
  still 
  to 
  be 
  noted 
  the 
  

   mediodorsal 
  spines. 
  Some 
  spines, 
  dorsal 
  to 
  tubercle 
  i, 
  seem 
  character- 
  

   istic 
  of 
  most 
  Oxyptilid 
  pupa?. 
  (I 
  have 
  one 
  of 
  didactylus 
  (?) 
  without 
  

   them.) 
  In 
  this 
  respect, 
  Marasmarcha 
  lunaedactyla 
  is 
  Oxyptilid. 
  These 
  

   are 
  absolutely 
  median, 
  and 
  in 
  a 
  direct 
  line 
  between 
  the 
  middle 
  of 
  the 
  

   dorsal 
  spines 
  carrying 
  i 
  and 
  ii. 
  On 
  the 
  2nd 
  abdominal 
  the 
  mediodorsal 
  

   is 
  just 
  indicated; 
  on 
  the 
  3rd, 
  4th, 
  5th, 
  6th, 
  and 
  7th 
  abdominal-segments 
  

   it 
  is 
  well 
  developed 
  — 
  a 
  finger-like 
  process, 
  not 
  quite 
  erect, 
  but 
  a 
  little 
  

   sloped 
  or 
  curved 
  forwards, 
  tapering, 
  about 
  four 
  times 
  as 
  long 
  as 
  it 
  is 
  

   wide 
  at 
  its 
  base, 
  with 
  a 
  rough 
  surface, 
  and 
  with 
  no 
  colour 
  but 
  its 
  

   contents. 
  Its 
  length 
  is 
  about 
  0*2mm. 
  (Chapman. 
  Described 
  from 
  

   pupa 
  skins, 
  obtained 
  by 
  Norgate, 
  spun 
  up 
  on 
  Crepis 
  virens, 
  near 
  

   Brandon, 
  from 
  which 
  the 
  imagines 
  were 
  bred.) 
  [In 
  the 
  Walsingham 
  

   collection 
  are 
  a 
  larva, 
  pupa, 
  and 
  imago, 
  apparently 
  of 
  the 
  same 
  

   species, 
  all 
  dated 
  July, 
  Granada, 
  and 
  labelled 
  distans, 
  with 
  a 
  " 
  ?." 
  The 
  

   moth 
  is 
  certainly 
  very 
  close 
  to 
  distans, 
  I 
  find 
  it 
  difficult 
  bo 
  say 
  

   precisely 
  wherein 
  they 
  differ. 
  The 
  pupa, 
  however, 
  is 
  tree 
  from 
  all 
  

   processes 
  and 
  horns, 
  and 
  has 
  well-developed 
  hairs. 
  It 
  is. 
  therefore. 
  

   exactly 
  of 
  the 
  type 
  of 
  Buckleria 
  pallidum. 
  Another 
  very 
  similar 
  

  

  