﻿34 
  Mr. 
  Cameron 
  on 
  

  

  tured. 
  The 
  petiole 
  is 
  more 
  than 
  half 
  the 
  length 
  of 
  the 
  

   abdomen, 
  and 
  is 
  dilated 
  not 
  far 
  from 
  the 
  base, 
  and 
  clavate 
  

   at 
  the 
  apex. 
  

  

  On 
  the 
  whole 
  the 
  specimens 
  agree 
  fairly 
  well 
  with 
  Smith's 
  

   description, 
  except 
  in 
  what 
  he 
  says 
  about 
  the 
  metanotum, 
  

   which 
  has 
  " 
  a 
  deep 
  central 
  longitudinal 
  impression 
  ; 
  a 
  semi- 
  

   circular 
  enclosed 
  space 
  at 
  the 
  base 
  of 
  the 
  metathorax, 
  which 
  

   is 
  transversely 
  striolated." 
  

  

  T. 
  intrudens 
  was 
  bred 
  from 
  cells 
  constructed 
  by 
  Para- 
  

   pison 
  rujlpes. 
  

  

  Larra. 
  

  

  Larrn, 
  Fabricius, 
  Eni. 
  Sj/st. 
  II., 
  220; 
  Kohl, 
  Ver/i. 
  z.-b. 
  

   Ges., 
  IVieu 
  1884, 
  233 
  (fion 
  Smith, 
  which 
  = 
  Sti^-mus). 
  

  

  Larrada, 
  Smith, 
  Cat. 
  Hym. 
  Ins. 
  IV., 
  274. 
  

  

  Smith 
  included 
  in 
  Larrada, 
  at 
  least 
  three 
  genera, 
  namely, 
  

   Larra, 
  Notogonia, 
  and 
  Liris 
  ; 
  probably 
  also 
  TacJiysphex. 
  

   From 
  his 
  description 
  it 
  is 
  impossible 
  to 
  make 
  out 
  to 
  which 
  

   of 
  these 
  groups 
  the 
  majority 
  of 
  his 
  species 
  belong, 
  as 
  he 
  

   does 
  not 
  mention 
  the 
  structural 
  details 
  on 
  which 
  the 
  genera 
  

   mentioned 
  are 
  grounded. 
  In 
  these 
  circumstances 
  I 
  have 
  

   been 
  compelled 
  to 
  leave 
  over 
  for 
  future 
  examination, 
  by 
  

   means 
  of 
  Smith's 
  types, 
  several 
  species 
  of 
  Notogotiia. 
  At 
  

   the 
  best 
  the 
  species 
  are 
  exceedingly 
  difficult 
  to 
  discriminate, 
  

   the 
  points 
  separating 
  the 
  species 
  being 
  usually 
  minute 
  struc- 
  

   tural 
  details, 
  most 
  of 
  which 
  are 
  not 
  mentioned 
  by 
  Smith 
  

   at 
  all. 
  

  

  The 
  following 
  is 
  a 
  list 
  of 
  Larra 
  scnsii 
  lat., 
  i.e., 
  of 
  those 
  

   species 
  which 
  cannot, 
  without 
  an 
  examination 
  of 
  the 
  types, 
  

   be 
  referred 
  to 
  their 
  precise 
  genus, 
  and 
  which 
  may 
  belong 
  

   to 
  Larra, 
  Notogonia, 
  Liris, 
  or 
  TacJiyspJiex. 
  

  

  I. 
  Larra 
  alecto, 
  Smith, 
  Jour. 
  Linn. 
  Soc. 
  Zoo/. 
  II., 
  

   103, 
  6. 
  

   I/al;. 
  Singapore. 
  

  

  