﻿110 
  W. 
  S. 
  PATTOX. 
  

  

  2. 
  Chrysomyia 
  megacephala, 
  Fabricius. 
  

  

  Synonyms 
  : 
  Chrysomyia 
  (Musca) 
  dux, 
  Escholz. 
  

  

  Chrysomyia 
  (Lucilia) 
  flaviceps, 
  Macquart 
  

   Chrysomyia 
  (Musca) 
  remuria, 
  Walker. 
  

   Chrysomyia 
  (Musca) 
  bata, 
  Walker. 
  

   Chrysomyia 
  duvaucellii, 
  Robineau-Desvoidv. 
  

  

  This 
  species 
  was 
  originally 
  described 
  by 
  Fabricius 
  from 
  Guinea, 
  but 
  so 
  far 
  as 
  I 
  

   am 
  aware, 
  it 
  has 
  not 
  been 
  recorded 
  from 
  that 
  region 
  again, 
  unless 
  it 
  has 
  been 
  confused 
  

   with 
  C. 
  bezziana, 
  which 
  also 
  occurs 
  in 
  West 
  Africa 
  and 
  is 
  very 
  like 
  it. 
  Wiedemann 
  

   evidently 
  examined 
  Fabricius's 
  type, 
  a 
  female, 
  and 
  gives 
  a 
  full 
  description 
  of 
  it. 
  I 
  

   have 
  carefully 
  compared 
  his 
  description 
  with 
  a 
  number 
  of 
  specimens, 
  and, 
  short 
  of 
  

   examining 
  the 
  type, 
  consider 
  in 
  the 
  meantime 
  that 
  megacephala 
  is 
  identical 
  with 
  

   Escholz's 
  dux, 
  and 
  Macquart 
  's 
  flaviceps. 
  

  

  In 
  describing 
  his 
  species 
  Macquart 
  draws 
  attention 
  to 
  its 
  close 
  resemblance 
  to 
  the 
  

   Fabrician 
  species, 
  but 
  points 
  out 
  that 
  megacephala 
  is 
  from 
  Guinea 
  while 
  flaviceps 
  is 
  

   found 
  in 
  India, 
  and 
  that 
  the 
  former 
  is 
  much 
  larger. 
  I 
  may, 
  however, 
  point 
  out 
  that 
  

   these 
  distinctions 
  are 
  of 
  little 
  or 
  no 
  value. 
  There 
  is 
  nothing 
  remarkable 
  in 
  the 
  fact 
  

   that 
  the 
  two 
  localities 
  are 
  so 
  widely 
  separated, 
  for 
  C. 
  bezzianna 
  is 
  found 
  in 
  West 
  

   Africa 
  as 
  well 
  as 
  throughout 
  India 
  and 
  probably 
  China 
  ; 
  and 
  size 
  and 
  colour 
  are 
  of 
  

   no 
  use 
  whatever 
  in 
  separating 
  these 
  flies. 
  

  

  I 
  have 
  examined 
  the 
  type 
  of 
  Walker's 
  remuria, 
  a 
  female, 
  from 
  China, 
  and 
  that 
  

   of 
  his 
  bata, 
  also 
  a 
  female, 
  from 
  an 
  unknown 
  locality, 
  and 
  find 
  that 
  both 
  are 
  typical 
  

   examples 
  of 
  megacephala. 
  

  

  This 
  species 
  is 
  extremely 
  widely 
  distributed, 
  and 
  I 
  have 
  in 
  my 
  collection 
  typical 
  

   examples 
  of 
  both 
  sexes 
  from 
  the 
  Australian 
  region 
  sent 
  me 
  by 
  Mr. 
  W. 
  W. 
  Froggatt 
  

   and 
  Mr. 
  G. 
  F. 
  Hill. 
  Chrysomyia 
  megacephala 
  is 
  the 
  common 
  bazaar 
  blue-bottle 
  of 
  India, 
  

   and 
  is 
  always 
  abundant 
  on 
  the 
  meat 
  and 
  sweet 
  stalls, 
  and 
  around 
  toddy 
  shops. 
  

   Fletcher 
  records 
  its 
  occurrence 
  in 
  large 
  numbers 
  on 
  the 
  toddy-palm 
  spathes 
  and 
  pots, 
  

   which 
  it 
  fouls 
  with 
  excrementitious 
  matter. 
  It 
  breeds 
  in 
  all 
  kinds 
  of 
  decaying 
  

   animal 
  matter. 
  I 
  have 
  recorded 
  its 
  larvae 
  from 
  cases 
  of 
  animal 
  myiasis. 
  It 
  would 
  

   be 
  interesting 
  to 
  know 
  whether 
  it 
  ever 
  attacks 
  man. 
  

  

  I 
  have 
  no 
  doubt 
  that 
  Robineau-Desvoidy's 
  Chrysomyia 
  duvaucellii 
  from 
  Bengal 
  

   is 
  this 
  species. 
  

  

  3. 
  Chrysomyia 
  albiceps, 
  Wiedemann. 
  

  

  Synonyms 
  : 
  Chrysomyia 
  (Musca) 
  putoria, 
  Wiedemann. 
  

  

  Chrysomyia 
  albiceps 
  var. 
  bibula, 
  Wiedemann. 
  

   Chrysomyia 
  (Lucilia) 
  rufifacies, 
  Guerin. 
  

   Chrysomyia 
  (Lucilia) 
  oricntalis, 
  Macquart. 
  

   Chrysomyia 
  (Musca) 
  himella, 
  Walker. 
  

   Chrysomyia 
  (Musca) 
  emoda, 
  Walker. 
  

   Chrysomyia 
  (Musca) 
  elara, 
  Walker. 
  

   Chrysomyia 
  (Lucilia) 
  bengalensis, 
  Robineau-Desvoidv. 
  

   Chrysomyia 
  dejeanii, 
  Robineau-Desvoidv. 
  

  

  I 
  am 
  still 
  in 
  doubt 
  as 
  to 
  the 
  true 
  identity 
  of 
  Wiedemann's 
  two 
  species, 
  albiceps 
  

   and 
  putoria, 
  and 
  I 
  may 
  say 
  I 
  am 
  not 
  alone 
  in 
  this 
  respect, 
  for 
  Professor 
  Bezzi 
  deter- 
  

   mined 
  my 
  Indian 
  specimens 
  as 
  albiceps 
  and 
  Dr. 
  Villeneuve 
  identical 
  specimens 
  as 
  

   putoria. 
  

  

  Musca 
  albiceps 
  was 
  described 
  by 
  Wiedemann 
  in 
  1819 
  from 
  the 
  Cape, 
  and 
  the 
  type 
  

   specimen 
  of 
  Musca 
  putoria 
  is 
  from 
  Sierre 
  Leone. 
  Now, 
  in 
  order 
  to 
  settle 
  as 
  to 
  whether 
  

   these 
  two 
  species 
  are 
  distinct, 
  I 
  may 
  say 
  that 
  both 
  Major 
  Austen 
  and 
  Dr. 
  Villeneuve 
  

   separate 
  the 
  males 
  of 
  putoria 
  from 
  those 
  of 
  albiceps 
  on 
  the 
  structure 
  of 
  the 
  front, 
  

   which 
  in 
  putoria, 
  according 
  to 
  these 
  authorities 
  is 
  narrow, 
  the 
  eyes 
  almost 
  meeting 
  

  

  