﻿54 
  JAMES 
  WATERSTON. 
  

  

  Tetrastichus 
  sicarius, 
  Silv. 
  

  

  T. 
  sicarius, 
  Silvestri, 
  Boll. 
  Lab. 
  Zool. 
  R. 
  Sc. 
  Agr. 
  Portici, 
  ix, 
  p. 
  325, 
  figs, 
  lxxiv- 
  

   Ixxv, 
  20.ii.1915. 
  

  

  Kenya 
  Colony 
  : 
  Songhor. 
  

  

  " 
  Reared 
  from 
  heavily 
  parasitised 
  Citrus 
  Psylla," 
  2$, 
  4 
  ?, 
  ix.1917 
  (F. 
  W. 
  Dry.). 
  

  

  This 
  species 
  has 
  also 
  been 
  bred 
  from 
  several 
  African 
  Coccids 
  (various 
  localities) 
  

   and 
  from 
  Lecanium 
  viride 
  in 
  Mauritius. 
  

  

  Tdtrastichus 
  dryi, 
  sp. 
  nov. 
  

  

  A 
  blackish 
  species 
  without 
  strong 
  metallic 
  reflections, 
  with 
  a 
  conspicuous 
  pale 
  

   basal 
  spot 
  on 
  the 
  abdomen 
  (<$) 
  and 
  somewhat 
  extensively 
  pale 
  legs. 
  The 
  ventral 
  

   sensorium 
  of 
  the 
  scape 
  short 
  — 
  much 
  less 
  than 
  the 
  breadth 
  of 
  the 
  scape. 
  The 
  funicle 
  

   with 
  whorls 
  of 
  long 
  tubular 
  bristles. 
  

  

  Fig. 
  6. 
  Tetrastichus 
  dryi, 
  sp. 
  n., 
  qJ: 
  a, 
  a, 
  antenna, 
  and 
  scapal 
  sensorium 
  enlarged 
  ; 
  b, 
  mandibie. 
  

   Tetrastichus 
  tnaculifer, 
  Silv., 
  $: 
  c, 
  scape 
  and 
  sensorium 
  ; 
  d, 
  mandible. 
  

  

  6*. 
  Body 
  and 
  coxae 
  blackish, 
  the 
  pale 
  abdominal 
  spot 
  extending 
  over 
  the 
  apical 
  

   third 
  of 
  tergite 
  1 
  and 
  about 
  two-fifths 
  of 
  the 
  breadth, 
  across 
  tergite 
  2 
  and 
  just 
  

   touching 
  on 
  tergite 
  3 
  anteriorly. 
  Antennae 
  uniformly 
  but 
  not 
  deeply 
  infuscated, 
  

   except 
  for 
  a 
  paler 
  median 
  stripe 
  on 
  the 
  scape. 
  Trophi 
  like 
  antennae. 
  Nervures 
  

   distinctly 
  pale 
  brown. 
  Fore 
  and 
  mid 
  tibiae 
  and 
  all 
  the 
  tarsi 
  pale 
  — 
  the 
  fifth 
  joint 
  

   of 
  the 
  latter 
  only 
  faintly 
  embrowned 
  ; 
  fore 
  femora 
  a 
  little 
  embrowned 
  basallv 
  (more 
  

   particularly 
  dorsally) 
  and 
  becoming 
  gradually 
  paler 
  near 
  the 
  apex 
  ; 
  mid 
  femora 
  

   pale 
  brown, 
  hardly 
  lighter 
  at 
  apex 
  ; 
  hind 
  femora 
  and 
  tibiae 
  uniformly 
  brown, 
  the 
  

   latter 
  of 
  a 
  lighter 
  shade. 
  

  

  