﻿528 
  BKITISH 
  LEPIDOPTERA. 
  

  

  is 
  nearly 
  3mm. 
  long, 
  white, 
  with 
  brownish-grey 
  head 
  and 
  anal 
  

   plate, 
  and 
  small 
  fuscous 
  plates 
  to 
  the 
  tubercles. 
  The 
  hairs 
  are 
  

   rather 
  long 
  and 
  dark. 
  Seen 
  from 
  above, 
  the 
  hairs 
  of 
  tubercles 
  iv 
  and 
  

   v 
  are 
  conspicuous, 
  the 
  posterior 
  (iv) 
  about 
  0-25mm. 
  long, 
  directed 
  

   slightly 
  backwards, 
  the 
  front 
  (v) 
  a 
  little 
  forward, 
  about 
  O-lmm. 
  ; 
  that 
  

   on 
  tubercle 
  i 
  is 
  about 
  Ollmm. 
  long, 
  on 
  ii 
  0-3mm., 
  and 
  their 
  bases 
  are 
  

   well 
  apart 
  ; 
  the 
  hair 
  on 
  iii 
  is 
  about 
  0-2rnm. 
  All 
  these 
  have 
  brownish- 
  

   fuscous 
  plates, 
  and 
  are 
  themselves 
  slightly 
  dark-tinted, 
  and 
  continue 
  

   thick 
  to 
  the 
  extremity, 
  without 
  being 
  actually 
  swollen 
  at 
  the 
  tip. 
  The 
  

   spiracles 
  are 
  also 
  conspicuous 
  dark 
  circles. 
  On 
  the 
  meso- 
  and 
  meta- 
  

   thorax 
  are 
  the 
  usual 
  four 
  pairs 
  of 
  hairs 
  on 
  each 
  side 
  ; 
  the 
  first 
  pair 
  

   trapezoidal, 
  on 
  a 
  common 
  base, 
  common 
  rather 
  by 
  the 
  extension 
  of 
  

   the 
  bases 
  than 
  the 
  approach 
  of 
  the 
  hairs, 
  which 
  are 
  well 
  apart, 
  and 
  

   much 
  like 
  tubercles 
  i 
  and 
  ii 
  of 
  the 
  abdominal 
  segments 
  as 
  to 
  length. 
  

   The 
  second 
  pair 
  reversed 
  trapezoidal, 
  on 
  a 
  common 
  base, 
  the 
  lower 
  

   (front) 
  hair 
  the 
  longer. 
  The 
  third 
  pair 
  has 
  an 
  extra 
  (third) 
  hair, 
  all 
  

   on 
  separate 
  bases, 
  the 
  accessory 
  (upper 
  posterior) 
  the 
  shortest. 
  The 
  

   fourth 
  pair 
  is 
  near 
  the 
  legs, 
  the 
  lower 
  (posterior) 
  hair 
  the 
  longer 
  ; 
  

   (0-2mm) 
  ; 
  these 
  have 
  separate 
  bases. 
  The 
  prothoracic 
  plate 
  has 
  the 
  usual 
  

   six 
  hairs 
  on 
  each 
  side. 
  The 
  end 
  ones 
  of 
  the 
  lower 
  row 
  and 
  the 
  middle 
  of 
  

   the 
  upper 
  being 
  long 
  ones, 
  the 
  others 
  not 
  half 
  their 
  length. 
  The 
  hairs 
  on 
  

   the 
  last 
  segment 
  are 
  long 
  ; 
  two 
  on 
  each 
  side 
  of 
  the 
  9th 
  abdominal 
  are 
  

   0-3mm., 
  apparently 
  representing 
  tubercles 
  ii 
  and 
  iv. 
  The 
  dark 
  anal 
  

   plate 
  has 
  three 
  hairs 
  on 
  each 
  side, 
  and 
  one 
  very 
  long 
  one 
  is 
  just 
  

   outside 
  it, 
  with 
  shorter 
  ones 
  along 
  the 
  posterior 
  margin 
  of 
  the 
  

   segment 
  and 
  on 
  the 
  bases 
  of 
  the 
  claspers. 
  The 
  prolegs 
  carry 
  seven 
  or 
  

   eight 
  strong 
  brown 
  hooks, 
  the 
  anal 
  claspers 
  eight 
  that 
  are 
  decidedly 
  

   larger. 
  On 
  tubercle 
  vi 
  is 
  a 
  hair 
  about 
  O-llmm. 
  long 
  at 
  posterior 
  

   margin 
  of 
  segment; 
  the 
  three 
  hairs 
  of 
  vii 
  are 
  all 
  strong 
  for 
  this 
  

   tubercle, 
  about 
  O08mm., 
  O09mm., 
  and 
  0-12mm. 
  long. 
  There 
  is 
  a 
  

   small 
  hair 
  internal 
  to 
  these, 
  but 
  I 
  cannot 
  find 
  it 
  on 
  the 
  segments 
  with 
  

   prolegs. 
  The 
  general 
  surface 
  is 
  covered 
  with 
  fine, 
  rounded, 
  skin- 
  

   points, 
  apparently 
  wanting 
  along 
  the 
  posterior 
  borders 
  of 
  the 
  segments. 
  

   The 
  feature 
  of 
  the 
  larva 
  is 
  the 
  marked 
  colour 
  of 
  the 
  head, 
  anal 
  plate, 
  

   spiracles, 
  tubercular 
  plates, 
  and 
  hairs. 
  There 
  is 
  no 
  trace 
  of 
  any 
  sort 
  

   of 
  secondary 
  hairs. 
  The 
  diameter 
  of 
  the 
  head 
  is 
  about 
  CK5mm. 
  [It 
  is 
  

   highly 
  probable 
  that 
  it 
  is 
  fullgrown 
  in 
  the 
  second 
  instar. 
  It 
  is, 
  with 
  the 
  

   highest 
  probability, 
  the 
  larva 
  of 
  S. 
  graphodactyla 
  var. 
  ]mewnonanthes. 
  

   It 
  was 
  taken 
  on 
  the 
  ground 
  in 
  the 
  Wornitz 
  (Mosigkauer 
  Haide), 
  in 
  

   Anhalt, 
  where 
  this 
  species 
  was 
  abundant 
  last 
  July 
  and 
  August, 
  

   but 
  it 
  may 
  be 
  some 
  other 
  gentian-feeder, 
  or 
  even 
  zophodactylus] 
  

   (Chapman). 
  Fullgrown 
  larva 
  : 
  Pale 
  green, 
  with 
  a 
  darker 
  green 
  dorsal 
  

   line, 
  below 
  which 
  is 
  another 
  dark 
  subdorsal 
  line, 
  bordered 
  on 
  each 
  side 
  

   by 
  a 
  pale 
  greenish-white 
  line, 
  the 
  lower 
  edge 
  of 
  which 
  is 
  rather 
  

   indented 
  ; 
  spiracles 
  minute, 
  white, 
  in 
  a 
  black 
  ring 
  ; 
  the 
  anal 
  segments 
  

   somewhat 
  attenuated 
  ; 
  the 
  2nd 
  segment 
  much 
  smaller 
  than 
  the 
  others 
  ; 
  

   head 
  pale 
  yellowish-brown, 
  clouded 
  with 
  darker 
  reticulations 
  ; 
  the 
  

   whole 
  surface 
  covered 
  with 
  a 
  pile 
  of 
  short 
  pale 
  brownish 
  hairs, 
  with 
  

   longer 
  ones 
  in 
  groups 
  of 
  tw 
  7 
  o, 
  three, 
  or 
  four, 
  arranged 
  along 
  the 
  sides 
  

   and 
  back. 
  In 
  some 
  larvae, 
  the 
  dorsal 
  stripe 
  is 
  tinged 
  with 
  purple, 
  and 
  

   the 
  general 
  colour 
  a 
  yellowish-green 
  (Mathew, 
  August 
  25th, 
  1906). 
  

   Length 
  ^-in. 
  Colour 
  grass- 
  green. 
  Head, 
  anal 
  claspers, 
  and 
  prolegs 
  

   somewhat 
  yellowish 
  ; 
  the 
  face 
  is 
  smooth, 
  mottled 
  with 
  brown 
  mark- 
  

  

  