﻿PLATE 
  III. 
  

  

  [To 
  be 
  bound 
  facing 
  p. 
  317.] 
  

  

  Diagrammatic 
  representation" 
  of 
  Dorsal 
  portion 
  of 
  Ancillary 
  appendages 
  

  

  of 
  the 
  Gentian-feeding 
  Stenoptilias, 
  and 
  of 
  the 
  other 
  

  

  two 
  British 
  species 
  x 
  80. 
  

  

  Fig. 
  1. 
  — 
  Tegumen 
  of 
  S. 
  pterodactyla, 
  with 
  terminal 
  lobes 
  full 
  and 
  round, 
  

   short 
  (i.e., 
  with 
  less 
  marked 
  sulcus), 
  uncus 
  broad-based, 
  terminal 
  part 
  baton-like, 
  

   hairs 
  distributed, 
  strong. 
  

  

  Fig. 
  2. 
  — 
  A. 
  pneumonanthes, 
  terminal 
  lobes 
  full 
  and 
  round, 
  with 
  well 
  marked 
  

   sulcus. 
  The 
  uncus 
  thicker, 
  more 
  robust, 
  tapering 
  regularly, 
  the 
  basal 
  half 
  with 
  

   complicated 
  folds, 
  clothed 
  with 
  short 
  sensory 
  hairs 
  almost 
  throughout. 
  

  

  Fig. 
  3. 
  — 
  A. 
  grandis, 
  n. 
  sp., 
  terminal 
  lobes 
  full 
  and 
  round, 
  with 
  well 
  marked 
  

   sulcus. 
  The 
  uncus 
  as 
  in 
  pneumonantlies. 
  

  

  Fig. 
  4. 
  — 
  A. 
  bipunctidactyla, 
  with 
  terminal 
  lobes 
  narrower 
  and 
  shorter, 
  uncus 
  

   broad-based 
  and 
  triangular. 
  

  

  Figs. 
  5-6. 
  — 
  A. 
  coprodactylus, 
  showing 
  variable, 
  rounded, 
  irregular 
  membrane 
  

   extending 
  beyond 
  scaled 
  portion 
  ; 
  uncus 
  broad-based, 
  terminal 
  part 
  baton-like 
  ; 
  

   hairs 
  grouped 
  at 
  base. 
  

  

  Fig. 
  7. 
  — 
  A. 
  zophodactylus, 
  delicate 
  structure, 
  showing 
  triangular, 
  pointed 
  

   membrane 
  extending 
  beyond 
  scaled 
  portion 
  ; 
  uncus 
  with 
  flattened 
  base, 
  the 
  process 
  

   smooth, 
  slender 
  and 
  baton-like, 
  hairs 
  on 
  base. 
  

  

  X.B.— 
  Except 
  the 
  median 
  process 
  and 
  the 
  clear 
  extensions 
  in 
  A. 
  zophodactylus 
  

   and 
  A. 
  coprodactylus, 
  the 
  whole 
  area 
  is 
  scale-covered 
  ; 
  this 
  scaling 
  is 
  only 
  

   diagrammatically 
  indicated 
  in 
  the 
  figures. 
  — 
  T. 
  A. 
  Chapman. 
  

  

  