﻿122 
  CHAS. 
  K. 
  BRAIN. 
  

  

  The 
  (J 
  puparia 
  are 
  elongate, 
  tubular, 
  open 
  behind, 
  straw-coloured, 
  with 
  a 
  brownish 
  

   secretion, 
  which 
  often 
  appears 
  in 
  ± 
  rectangular 
  patches 
  on 
  each 
  side 
  of 
  the 
  median 
  

   line 
  (fig. 
  210). 
  

  

  The 
  mounted 
  $ 
  is 
  almost 
  circular, 
  with 
  the 
  caudal 
  extremity 
  slightly 
  produced. 
  

   The 
  integument 
  is 
  clear 
  and 
  has 
  a 
  marginal 
  series 
  of 
  8-shaped 
  glands 
  of 
  medium 
  size. 
  

   Other 
  similar 
  glands 
  are 
  scattered 
  over 
  the 
  dorsum 
  and 
  these 
  are 
  of 
  about 
  the 
  same 
  

   size 
  as 
  those 
  of 
  the 
  marginal 
  series, 
  not 
  much 
  smaller 
  as 
  in 
  C. 
  passerinae. 
  The 
  

   antennae 
  are 
  small 
  conical 
  protuberances 
  with 
  several 
  curved 
  spines, 
  and 
  are 
  longer 
  

   and 
  narrower 
  than 
  in 
  C. 
  passerinae. 
  The 
  caudal 
  lobes 
  are 
  moderately 
  long, 
  but 
  are 
  

   not 
  thickened 
  on 
  their 
  inner 
  edges, 
  and 
  a 
  short 
  distance 
  in 
  front 
  of 
  the 
  anal 
  ring 
  are 
  

   two 
  chitinised 
  discs. 
  

  

  Habitat 
  : 
  On 
  stems 
  of 
  blauwbosch 
  (Royena 
  pattens, 
  Thunb. 
  ; 
  Ebenaceae), 
  

   Fauresmith, 
  0. 
  F. 
  S. 
  ; 
  collected 
  by 
  J. 
  C. 
  Faure, 
  March 
  1915. 
  

   Collection 
  No. 
  : 
  96. 
  

  

  Subfamily 
  Tachardiinae. 
  

   " 
  Insects 
  enclosed 
  in 
  a 
  resinous 
  cell 
  with 
  three 
  orifices. 
  Adult 
  females 
  apodous, 
  

   with 
  the 
  terminal 
  segments 
  produced 
  into 
  a 
  tail-like 
  organ 
  bearing, 
  at 
  the 
  extremity, 
  

   the 
  anal 
  orifice, 
  which 
  is 
  surrounded 
  by 
  a 
  broken 
  setiferous 
  ring 
  " 
  (Green). 
  

  

  Genus 
  Tachardia, 
  K. 
  Blanchard. 
  

  

  Professor 
  Cockerell 
  (" 
  The 
  Entomologist," 
  xxxiv, 
  p. 
  249, 
  1901), 
  before 
  describing 
  

   Tachardia 
  albida 
  from 
  Natal, 
  gives 
  the 
  following 
  synopsis 
  of 
  this 
  genus 
  : 
  — 
  

  

  " 
  Tachardia, 
  Blanchard 
  (Lac 
  Insects). 
  

  

  This 
  genus 
  contains 
  some 
  very 
  diverse 
  elements, 
  which 
  will 
  no 
  doubt 
  eventually 
  

   be 
  treated 
  as 
  genera. 
  We 
  may 
  for 
  the 
  present 
  recognise 
  three 
  subgenera 
  : 
  — 
  - 
  

  

  (1) 
  Tachardia 
  proper. 
  Type, 
  T. 
  lacca, 
  the 
  East 
  Indian 
  commercial 
  lac. 
  Female 
  very 
  

  

  elongated, 
  vasiform 
  ; 
  the 
  individuals 
  enclosed 
  in 
  masses 
  of 
  lac 
  surrounding 
  

   the 
  twigs, 
  never 
  separate. 
  I 
  know 
  of 
  only 
  one 
  species 
  of 
  this 
  group. 
  

  

  (2) 
  Tachardiella, 
  subg. 
  nov. 
  Type, 
  T. 
  cornuta, 
  Ckll. 
  Female 
  more 
  or 
  less 
  globular 
  ; 
  

  

  individuals 
  often 
  separate. 
  This 
  includes 
  the 
  species 
  of 
  America 
  and 
  

   Australia. 
  

  

  (3) 
  Tachardina, 
  subg. 
  nov. 
  Type, 
  T. 
  albida, 
  with 
  the 
  characters 
  given 
  below." 
  

  

  It 
  will 
  be 
  noticed 
  from 
  the 
  description 
  of 
  T. 
  albida 
  given 
  later 
  that 
  the 
  main 
  points 
  

   of 
  difference 
  between 
  this 
  and 
  the 
  other 
  species 
  mentioned 
  by 
  Professor 
  Cockerell 
  are 
  

   (a) 
  the 
  tests 
  are 
  collected 
  in 
  large 
  masses 
  ; 
  (6) 
  the 
  caudal 
  process 
  is 
  peculiar 
  ; 
  (c) 
  the 
  

   spine 
  is 
  absent. 
  Of 
  these 
  characters 
  none 
  is 
  peculiar 
  to 
  the 
  African 
  species, 
  and 
  

   T. 
  albida 
  is 
  the 
  only 
  species 
  I 
  know 
  of 
  in 
  which 
  the 
  spine 
  is 
  absent. 
  I 
  therefore 
  follow 
  

   Newstead 
  in 
  disregarding 
  the 
  subgenera 
  for 
  the 
  present 
  and 
  including 
  the 
  six 
  South 
  

   African 
  insects 
  in 
  the 
  genus 
  Tachardia. 
  

  

  I 
  might 
  mention 
  that 
  the 
  insects 
  in 
  this 
  sub-family 
  are 
  by 
  far 
  the 
  most 
  difficult 
  to 
  

   make 
  satisfactory 
  microscopic 
  slides 
  of, 
  as 
  nearly 
  all 
  the 
  old 
  dry 
  specimens 
  seem 
  to 
  be 
  

   eaten 
  out, 
  and 
  after 
  dissolving 
  the 
  lac 
  test 
  there 
  usually 
  remain 
  but 
  a 
  few 
  fragments 
  

   which 
  are 
  quite 
  useless 
  for 
  determination. 
  Fresh 
  material 
  is 
  therefore 
  most 
  desirable 
  

   in 
  this 
  group. 
  

  

  