﻿AMBLYPTILIA. 
  271 
  

  

  larval 
  differences 
  with 
  the 
  two 
  species, 
  and 
  concludes 
  that 
  the 
  larval 
  

   characters 
  are 
  sufficiently 
  distinctive; 
  Chapman 
  also 
  finds 
  certain 
  

   distinctive 
  pupal 
  characters 
  (see 
  postea). 
  

  

  As 
  to 
  the 
  names 
  to 
  be 
  applied 
  to 
  the 
  two 
  British 
  species, 
  there 
  

   appears 
  to 
  be 
  considerable 
  doubt. 
  The 
  oldest 
  name 
  for 
  the 
  red-brown 
  

   species 
  is, 
  no 
  doubt, 
  calodactylus, 
  Fab. 
  (Mant. 
  Ins., 
  ii., 
  p. 
  258), 
  a 
  title, 
  

   however, 
  that 
  belongs 
  by 
  right 
  to 
  zetterstedtii, 
  Zell. 
  (see 
  antea, 
  p. 
  162). 
  

   In 
  1811, 
  Haworthgave 
  the 
  name 
  punctidactyla 
  (Lep. 
  Brit., 
  pt. 
  3, 
  p. 
  479) 
  

   to 
  the 
  greenish 
  species. 
  Between 
  181 
  1 
  and 
  1817, 
  Hiibner 
  figured 
  (Schmett. 
  

   Eur., 
  Alu. 
  v., 
  figs. 
  23-24) 
  a 
  deep 
  dull-brown 
  insect 
  marked 
  with 
  tawny, 
  

   as 
  acanthadactyla, 
  having 
  already, 
  about 
  1800, 
  figured 
  in 
  his 
  Baiqjen, 
  

   etc., 
  ix., 
  Aluc. 
  i., 
  pi. 
  c, 
  figs, 
  a-d, 
  the 
  larva 
  and 
  pupa 
  of 
  the 
  red-brown 
  

   form 
  on 
  Ononis 
  spinosa 
  as 
  calodactyla. 
  In 
  1823, 
  he 
  figured 
  [Schmett. 
  

   Eur., 
  Alu. 
  vii., 
  figs. 
  35-36), 
  under 
  the 
  name 
  of 
  cosmodactyla, 
  a 
  reddish- 
  

   brown 
  insect, 
  marked 
  with 
  yellow. 
  In 
  other 
  words, 
  both 
  acanthadactyla, 
  

   Hb., 
  figs. 
  23-24, 
  and 
  cosmodactyla, 
  Hb., 
  figs. 
  35 
  36, 
  are 
  wanting 
  in 
  the 
  

   characteristic 
  greenish 
  colour 
  of 
  punctidactyla, 
  Haw. 
  In 
  1833, 
  Treitschke 
  

   (Die 
  Schmett., 
  ix., 
  pt. 
  2, 
  p. 
  234) 
  described 
  the 
  red-brown 
  species 
  as 
  

   acanthodactyla, 
  Hb., 
  and 
  the 
  greenish 
  species 
  as 
  cosmodactyla, 
  Hb., 
  giving 
  

   his 
  own 
  colour 
  diagnoses 
  as 
  " 
  obscure-fuscous," 
  and 
  " 
  olivaceous-fuscous," 
  

   respectively, 
  and 
  hence 
  came 
  into 
  our 
  lists 
  the 
  general 
  use 
  of 
  these 
  

   names 
  for 
  the 
  two 
  species. 
  Strangely 
  enough, 
  after 
  describing 
  the 
  

   insects 
  in 
  the 
  terms 
  just 
  noted, 
  Treitschke 
  adds 
  that 
  his 
  cosmodactyla 
  

   accords 
  exactly 
  with 
  the 
  Hiibnerian 
  figure, 
  in 
  which, 
  however, 
  we 
  

   detect 
  no 
  trace 
  of 
  " 
  olive 
  " 
  or 
  "greenish." 
  In 
  1890, 
  we 
  girded 
  at 
  the 
  

   application 
  of 
  the 
  name 
  cosmodactyla, 
  Hb., 
  to 
  the 
  greenish 
  species, 
  pointing 
  

   out 
  that 
  Hiibner's 
  figures 
  35 
  and 
  36 
  of 
  cosmodactyla 
  were 
  not 
  greenish, 
  

   and, 
  in 
  1891 
  (British 
  Nat., 
  i., 
  p. 
  38), 
  we 
  also 
  offered 
  some 
  remarks 
  on 
  

   the 
  subject. 
  Later, 
  in 
  1899 
  (Ent. 
  Bee, 
  xi., 
  p. 
  238), 
  we 
  suggested 
  that 
  

   Hiibner's 
  figs. 
  23-24, 
  acanthadactyla, 
  were 
  referable 
  to 
  the 
  " 
  olive- 
  

   grey 
  " 
  or 
  " 
  olive-fuscous 
  " 
  species, 
  punctidactyla 
  (although 
  the 
  figures 
  

   were 
  in 
  no 
  wise 
  characteristic), 
  and 
  also 
  that 
  his 
  figs. 
  35 
  and 
  36, 
  

   cosmodactyla, 
  were 
  referable 
  to 
  the 
  red-brown 
  species, 
  i.e., 
  exactly 
  the 
  

   opposite 
  conclusion 
  to 
  that 
  at 
  which 
  Treitschke 
  had 
  arrived. 
  There 
  

   appears 
  to 
  be 
  some 
  little 
  difference 
  in 
  the 
  tinting 
  of 
  the 
  figures 
  in 
  different 
  

   copies 
  of 
  Hiibner's 
  plates, 
  and, 
  after 
  much 
  reconsideration 
  and 
  study, 
  

   we 
  came 
  to 
  the 
  conclusion 
  that 
  Hiibner's 
  acanthadactyla, 
  with 
  deep 
  

   dull-brown 
  wings, 
  and 
  the 
  reddish-brown 
  cosmodactyla, 
  might 
  possibly 
  

   have 
  to 
  be 
  referred 
  to 
  the 
  same 
  species, 
  i.e., 
  that 
  neither 
  is 
  sufficiently 
  

   characteristic 
  to 
  be 
  placed 
  with 
  certainty 
  with 
  the 
  greenish 
  species, 
  

   punctidactyla, 
  Haw. 
  One 
  thing 
  is, 
  however, 
  abundantly 
  certain, 
  as 
  we 
  

   have 
  before 
  said 
  (Pter. 
  Brit., 
  p. 
  57), 
  viz., 
  that 
  Hiibner's 
  cosmodactyla, 
  

   figs. 
  35 
  and 
  36, 
  cannot 
  possibly 
  be 
  punctidactyla, 
  Haw., 
  nor 
  would 
  we 
  

   assert 
  too 
  positively 
  that 
  Hiibner's 
  acanthadactyla. 
  figs. 
  2o-24. 
  

   can. 
  In 
  this 
  dilemma 
  we 
  appealed 
  to 
  Bankes, 
  and 
  he 
  writes 
  

   (in 
  litt., 
  3, 
  iv. 
  1906) 
  : 
  "I 
  have 
  no 
  hesitation 
  whatever, 
  after 
  carefully 
  

   examining 
  Hiibner's 
  figures 
  (as 
  represented 
  in 
  ' 
  Fletcher's 
  ' 
  copy), 
  ami 
  

   then 
  comparing 
  them 
  with 
  my 
  long 
  bred 
  series 
  of 
  both 
  species, 
  in 
  

   saying 
  that 
  figs. 
  23-24, 
  which 
  Hiibner 
  calls 
  ' 
  acanthadactyla,' 
  most 
  

   certainly 
  are 
  intended 
  to 
  represent 
  the 
  olivaceous 
  insect 
  known 
  in 
  

   Britain 
  as 
  ' 
  punctidactyla, 
  1 
  Haw., 
  and 
  that 
  tigs. 
  36-86, 
  called 
  bv 
  

   Hiibner 
  'cosmodactyla,' 
  equally 
  certainly 
  represent 
  the 
  common 
  reddish- 
  

   brown 
  species 
  to 
  which 
  British 
  authors 
  have 
  almost 
  invariably 
  applied 
  

  

  