﻿22 
  Mr. 
  Cameron 
  on 
  

  

  having 
  the 
  yellow 
  tint 
  very 
  feebly 
  developed. 
  The 
  tegulae 
  

   are 
  for 
  the 
  greater 
  part 
  black. 
  

  

  I 
  have 
  seen 
  four 
  females 
  in 
  the 
  Calcutta 
  Museum 
  col- 
  

   lection. 
  

  

  Sphex 
  rufipennis, 
  Fab. 
  

  

  This 
  species 
  appears 
  to 
  be 
  a 
  common 
  one 
  in 
  India. 
  

   The 
  colour 
  of 
  the 
  wings 
  varies, 
  the 
  base, 
  especially 
  in 
  the 
  

   form 
  diabolicus, 
  Smith, 
  being 
  more 
  or 
  less 
  blackish, 
  and 
  

   the 
  yellow 
  tint 
  is 
  something 
  suffused 
  with 
  fuscous. 
  

  

  S. 
  rufipennis 
  has 
  been 
  recorded 
  from 
  South 
  America, 
  

   but 
  inasmuch 
  as 
  the 
  $ 
  genitalia 
  differs 
  considerably 
  

   from 
  that 
  of 
  the 
  Indian 
  form, 
  it 
  is 
  probable 
  that 
  the 
  

   American 
  form, 
  notwithstanding 
  its 
  almost 
  identity 
  in 
  

   coloration, 
  size, 
  &c., 
  really 
  represents 
  a 
  different 
  species, 
  

   which 
  I 
  have 
  provisionally 
  named 
  <S. 
  erytJiroptera 
  (Biol. 
  

   Cent. 
  Am. 
  Hym. 
  II., 
  p. 
  30). 
  The 
  form 
  of 
  the 
  scutellum 
  

   varies 
  in 
  being 
  more 
  or 
  less 
  deeply 
  furrowed. 
  The 
  *S^. 
  

   rufipennis, 
  Kohl 
  (Terines. 
  Fuzetek, 
  IX., 
  p. 
  198), 
  is, 
  as 
  I 
  am 
  

   informed 
  by 
  Kohl, 
  a 
  different 
  species 
  from 
  rufipennis. 
  Fab. 
  

   = 
  luteipenjtis, 
  Mocsary, 
  the 
  latter 
  differing 
  from 
  rufipennisy 
  

   Kohl 
  in 
  having 
  the 
  post 
  scutellum 
  bituberculate, 
  the 
  

   antennae 
  thinner, 
  and 
  the 
  wings 
  black 
  at 
  the 
  base. 
  

  

  Sphex 
  argentata. 
  

  

  This 
  large 
  species 
  is 
  common 
  all 
  over 
  the 
  Oriental 
  

   region, 
  extending 
  also 
  into 
  the 
  Australian 
  Islands 
  of 
  the 
  

   Malay 
  Archipelago. 
  It 
  is 
  stated 
  by 
  Wallace 
  (Jour. 
  Linn. 
  

   Soc, 
  XL, 
  p. 
  296) 
  to 
  be 
  common 
  in 
  the 
  sandy 
  streets 
  of 
  

   Dobbo, 
  in 
  the 
  Aru 
  Islands, 
  and 
  also 
  at 
  flowering 
  shrubs 
  in 
  

   Celebes. 
  

  

  ^^Sphex 
  Rothneyi, 
  sp. 
  nov. 
  

  

  Nigra; 
  capite 
  et 
  t 
  ho 
  race 
  dense 
  et 
  longe 
  arge7iteo 
  pilosis 
  ; 
  

   abdomine 
  pedibnsgue 
  rufis 
  ; 
  coxis, 
  trochajitcribus 
  basique 
  

   femorum, 
  rufis 
  ; 
  alis 
  hyalinis, 
  apice 
  fumatis 
  ; 
  clypeo 
  inciso. 
  

   Long. 
  22 
  — 
  24 
  mm. 
  

  

  