﻿36 
  BRITISH 
  LEPIDOPTERA. 
  

  

  matula 
  had 
  a 
  number 
  of 
  eggs 
  in 
  their 
  ovaries, 
  although 
  their 
  develop- 
  

   ing 
  power 
  was 
  not 
  ascertained. 
  Both 
  hybrids 
  are 
  nearer 
  to 
  Drepana 
  

   curvatula 
  than 
  to 
  D. 
  falcataria, 
  but 
  the 
  limited 
  number 
  of 
  D. 
  hybr. 
  

   approximatula 
  bred 
  makes 
  it 
  difficult 
  to 
  determine 
  whether 
  the 
  $ 
  has 
  

   a 
  stronger 
  influence 
  on 
  the 
  aspect 
  of 
  the 
  hybrid 
  than 
  the 
  ? 
  . 
  The 
  

   earliest 
  record 
  of 
  rearing 
  this 
  form 
  is 
  apparently 
  that 
  noted 
  in 
  the 
  Ann. 
  

   Soc. 
  Ent. 
  Fr., 
  1833, 
  p. 
  lvi, 
  where 
  M. 
  Apatz 
  is 
  stated 
  to 
  have 
  done 
  so 
  

   and 
  named 
  the 
  hybrid 
  approximatula. 
  

  

  Anthrocerides. 
  — 
  We 
  have 
  already 
  referred 
  {antea, 
  p. 
  1) 
  to 
  the 
  

   remarks 
  of 
  Standfuss 
  as 
  to 
  the 
  frequency 
  of 
  crosspairing 
  among 
  the 
  

   Anthrocerids, 
  and 
  we 
  have 
  ourselves 
  detailed 
  {antea, 
  i., 
  pp. 
  418-420) 
  a 
  

   large 
  number 
  of 
  cases, 
  including 
  the 
  obtaining 
  of 
  larvae 
  of 
  A. 
  fili- 
  

   pendulae 
  $ 
  x 
  achilleae 
  £ 
  , 
  of 
  A. 
  hippoerepidis 
  {transalpina) 
  $ 
  X 
  

   peucedani 
  $, 
  and 
  of 
  A. 
  fausta 
  $ 
  xA. 
  hippocrepidis 
  $. 
  In 
  spite 
  of 
  

   this 
  we 
  agree 
  with 
  Oberthiir 
  {Bull. 
  Soc. 
  Ent. 
  France, 
  1897, 
  pp. 
  256-7) 
  

   that 
  wild 
  Anthrocerid 
  hybrids 
  are 
  very 
  rare, 
  and 
  we 
  are 
  not 
  altogether 
  

   inclined 
  to 
  accept 
  as 
  hybrids 
  the 
  many 
  captured 
  specimens, 
  that 
  

   Standfuss 
  avers 
  that 
  he 
  has 
  received, 
  belonging 
  to 
  the 
  group 
  including 
  

   trifolii, 
  lonicerae, 
  stoechadis, 
  filipendulae, 
  anfjelicae, 
  and 
  transalpina, 
  and 
  

   which 
  he 
  has 
  not 
  been 
  able 
  to 
  refer 
  to 
  any 
  of 
  these 
  species. 
  Still 
  we 
  

   are 
  not 
  altogether 
  free 
  from 
  the 
  suspicion 
  that 
  Anthrocera 
  hippocrepidis, 
  

   Stphs. 
  {stephensi, 
  Dupont), 
  described 
  in 
  detail 
  {antea, 
  i., 
  pp. 
  532-538; 
  

   544-546), 
  has 
  had 
  a 
  hybrid 
  origin 
  {Ent. 
  Rec, 
  ix., 
  pp. 
  103-107). 
  

   Of 
  actual 
  hybridisation 
  experiments, 
  the 
  earliest 
  are 
  those 
  made 
  by 
  

   Fletcher, 
  in 
  1889 
  and 
  1890, 
  between 
  Anthrocera 
  lonicerae 
  and 
  A. 
  

   filipendulae'', 
  and 
  in 
  1891 
  and 
  1892 
  between 
  Anthrocera 
  lonicerae 
  and 
  

   A. 
  trifolii, 
  the 
  details 
  of 
  which 
  were 
  recorded 
  in 
  1893 
  {Ent. 
  Mo. 
  Mag., 
  

   xxix., 
  p. 
  53). 
  At 
  the 
  same 
  time 
  he 
  obtained 
  two 
  pairings 
  between 
  A, 
  

   viciae 
  {meliloti) 
  $ 
  and 
  A. 
  filipendulae 
  $ 
  , 
  and 
  one 
  pairing 
  between 
  A. 
  

   viciae 
  $ 
  and 
  A. 
  worthingi 
  $ 
  ; 
  he 
  failed 
  entirely 
  to 
  obtain 
  a 
  pairing 
  

   between 
  A. 
  viciae 
  and 
  A. 
  trifolii, 
  and 
  the 
  eggs 
  resulting 
  from 
  the 
  pair- 
  

   ings 
  obtained 
  failed 
  to 
  hatch. 
  The 
  fertile 
  crossings 
  obtained 
  by 
  Fletcher 
  

   (see 
  antea, 
  vol. 
  i., 
  pp. 
  418-420) 
  may 
  be 
  summarised 
  as 
  follows 
  : 
  — 
  

  

  1 
  and 
  2. 
  Anthrocera 
  hybr. 
  intermedia 
  {filipendulae 
  $ 
  X 
  lonicerae 
  

   $ 
  ) 
  and 
  Anthrocera 
  hybr. 
  inversa 
  {lonicerae 
  $ 
  X 
  filipendulae 
  $ 
  ). 
  — 
  

   These 
  reciprocal 
  crosses 
  are 
  reported 
  as 
  being 
  intermediate 
  in 
  markings 
  

   between 
  the 
  parents, 
  some 
  of 
  the 
  $ 
  s 
  showing 
  only 
  a 
  slight 
  trace 
  of 
  

   the 
  sixth 
  spot 
  when 
  examined 
  with 
  a 
  strong 
  lens, 
  whilst 
  some 
  of 
  

   the 
  ? 
  s 
  have 
  it 
  as 
  well- 
  developed 
  as 
  it 
  is 
  in 
  typical 
  A. 
  filipendulae.. 
  

   The 
  specimens 
  were 
  very 
  large 
  ; 
  two 
  pairings 
  of 
  the 
  hybrids 
  were 
  

   obtained, 
  but 
  the 
  eggs 
  were 
  infertile. 
  

  

  3 
  and 
  4. 
  Anthrocera 
  hybr. 
  fletcheri 
  {trifolii 
  g 
  xlonicerae 
  $) 
  

   and 
  Anthrocera 
  hybr. 
  worthingi 
  {lonicerae 
  $ 
  x 
  trifolii 
  ? 
  ). 
  — 
  Both 
  

   these 
  hybrids 
  laid 
  fertile 
  eggs, 
  and 
  the 
  hybrids 
  were 
  fertile 
  inter 
  se, 
  

   progeny 
  of 
  fletcheri 
  $ 
  x 
  fletcheri 
  $ 
  , 
  and 
  of 
  worthingi 
  $ 
  x 
  worthingi 
  ? 
  

   being 
  obtained. 
  Pairings 
  between 
  fletcheri 
  and 
  lonicerae 
  (one 
  of 
  the 
  

   parent 
  species) 
  were 
  obtained 
  and 
  progeny 
  reared. 
  

  

  5. 
  Anthrocera 
  hybr. 
  secunda 
  {lonicerae 
  $ 
  x 
  fletcheri 
  $ 
  ). 
  — 
  Larvae 
  

   of 
  A. 
  hybr. 
  secunda 
  $ 
  x 
  fletcheri 
  J 
  were 
  also 
  obtained, 
  which, 
  however, 
  

  

  * 
  Hamm 
  records 
  (Ent. 
  Rec, 
  xi., 
  pp. 
  269-270) 
  the 
  rinding 
  of 
  five 
  pairs 
  of 
  A. 
  

   lonicerae 
  and 
  A. 
  filipendulae, 
  in 
  copula, 
  in 
  nature, 
  on 
  the 
  same 
  day 
  in 
  July, 
  1899, 
  

   near 
  Oxford. 
  Three 
  of 
  the 
  females 
  found 
  thus 
  paired 
  laid 
  good 
  batches 
  of 
  fertile 
  

   eggs. 
  

  

  