﻿100 
  Mr. 
  J. 
  W. 
  Douglas 
  on 
  the 
  

  

  anterior 
  segments 
  are 
  more 
  flattened 
  ; 
  the 
  second 
  or 
  third 
  is 
  

   the 
  broadest 
  of 
  all 
  ; 
  hence 
  it 
  follows 
  that 
  the 
  anterior 
  portion 
  of 
  

   the 
  body 
  forms 
  a 
  kind 
  of 
  isosceles 
  triangle. 
  The 
  second 
  segment 
  

   of 
  some 
  seems 
  widened 
  by 
  two 
  appendages, 
  portions 
  of 
  spheres 
  

   that 
  have 
  been 
  added 
  on 
  each 
  side 
  ; 
  this 
  may 
  be 
  observed 
  in 
  the 
  

   larva 
  which 
  mines 
  the 
  leaves 
  of 
  the 
  rose 
  in 
  blotches. 
  But 
  what 
  

   appears 
  most 
  remarkable 
  is, 
  that 
  one 
  seems 
  to 
  perceive 
  on 
  each 
  

   of 
  those 
  parts 
  that 
  extends 
  beyond 
  the 
  others 
  a 
  fissure 
  which 
  can 
  

   only 
  be 
  a 
  stigma 
  or 
  organ 
  of 
  respiration 
  ; 
  thus 
  these 
  stigmata 
  

   are 
  placed 
  much 
  nearer 
  the 
  middle 
  of 
  the 
  back 
  than 
  in 
  ordinary 
  

   caterpillars." 
  

  

  Note. 
  — 
  The 
  breadth 
  of 
  the 
  second 
  and 
  third 
  segment 
  is 
  very 
  

   striking 
  in 
  most 
  of 
  the 
  larvae 
  of 
  the 
  genus 
  Lithocolletis. 
  

  

  Note. 
  — 
  The 
  larva 
  which 
  mines 
  the 
  leaves 
  of 
  the 
  rose 
  in 
  blotches 
  

   is 
  unknown 
  to 
  me. 
  Coleophora 
  Luscmicepennella, 
  it 
  is 
  true, 
  makes 
  

   blotches 
  on 
  the 
  leaves, 
  but 
  so 
  accurate 
  an 
  observer 
  as 
  Reaumur 
  

   would 
  never 
  have 
  mistaken 
  a 
  Coleophora 
  for 
  a 
  miner 
  ; 
  and 
  it 
  is 
  

   remarkable 
  that 
  he 
  repeatedly 
  mentions 
  this 
  rose 
  miner, 
  and 
  in 
  

   one 
  place 
  states 
  that 
  there 
  are 
  no 
  shrubs 
  on 
  which 
  blotch 
  miners 
  

   are 
  more 
  common 
  than 
  the 
  roses 
  ; 
  this 
  larva 
  was 
  an 
  incognita 
  to 
  

   Zeller, 
  in 
  1838, 
  and 
  still 
  remains 
  lost 
  to 
  us. 
  Whether 
  the 
  species 
  

   be 
  really 
  extinct, 
  or 
  only 
  wants 
  looking 
  for, 
  time 
  must 
  prove. 
  

   But 
  although 
  we 
  do 
  not 
  know 
  this 
  species, 
  I 
  think 
  we 
  know 
  what 
  

   is 
  intended 
  by 
  the 
  widening 
  of 
  the 
  anterior 
  segments 
  by 
  an 
  ap- 
  

   pendage 
  like 
  a 
  portion 
  of 
  a 
  sphere, 
  for 
  in 
  a 
  larva 
  mining 
  the 
  

   leaves 
  of 
  black 
  thorn, 
  the 
  black 
  head 
  deeply 
  set 
  into 
  and 
  working 
  

   up 
  under 
  the 
  wide 
  and 
  pale 
  next 
  segment, 
  imparts 
  thereto 
  its 
  own 
  

   colour, 
  and 
  makes 
  the 
  rounded 
  sides 
  of 
  this 
  segment, 
  which 
  pro- 
  

   ject 
  beyond 
  the 
  sides 
  of 
  the 
  inserted 
  head, 
  look 
  like 
  semi-spherical 
  

   appendages. 
  

  

  " 
  All 
  these 
  mining 
  larvae 
  have 
  a 
  tender, 
  transparent, 
  and 
  smooth 
  

   skin, 
  but 
  all 
  are 
  not 
  of 
  the 
  same 
  colour 
  ; 
  the 
  greater 
  part, 
  how- 
  

   ever, 
  are 
  whitish, 
  or 
  greenish 
  white 
  ; 
  some 
  are 
  of 
  a 
  pale 
  flesh 
  

   colour, 
  and 
  others 
  of 
  a 
  deeper 
  flesh 
  colour, 
  approaching 
  to 
  red. 
  

  

  " 
  There 
  are 
  also 
  a 
  great 
  many 
  species 
  which 
  are 
  of 
  a 
  beautiful 
  

   yellow, 
  resembling 
  the 
  colour 
  of 
  amber 
  : 
  this 
  is 
  the 
  colour 
  of 
  the 
  

   blotch 
  miners 
  of 
  the 
  apple 
  tree 
  (no 
  doubt 
  Lithocolletis 
  PomifoUella, 
  

   the 
  colour 
  well 
  agrees) 
  and 
  also 
  of 
  the 
  gallery-miners 
  in 
  the 
  leaves 
  

   of 
  the 
  bramble 
  {Ncpticula 
  aurcUa). 
  A 
  blotch 
  miner 
  of 
  rose- 
  

   leaves, 
  already 
  mentioned, 
  is 
  of 
  a 
  greyish 
  olive. 
  Commonly, 
  these 
  

   colours 
  are 
  not 
  clouded, 
  varied 
  and 
  combined 
  by 
  spots 
  and 
  rays 
  

   as 
  are 
  those 
  of 
  many 
  caterpillars 
  which 
  feed 
  on 
  leaves. 
  How-ever, 
  

   we 
  find 
  in 
  the 
  leaves 
  of 
  the 
  goose-foot 
  and 
  orach 
  a 
  larva 
  mining 
  

   in 
  blotches, 
  which, 
  if 
  as 
  large 
  as 
  common 
  caterpillars, 
  might 
  be 
  

  

  