﻿400 
  Mr. 
  G. 
  Meade-Waldo 
  on 
  

  

  Linn. 
  Bordeaux, 
  xxxiii. 
  p. 
  171), 
  and 
  these 
  descriptions 
  are 
  

   reproduced 
  by 
  Friese 
  in 
  ' 
  Bieiien 
  Europas/ 
  vol. 
  ii. 
  p. 
  151. 
  

  

  Smitli's 
  E. 
  terminalis, 
  £rotn 
  the 
  south 
  of 
  France, 
  is 
  

   certainly 
  synonymous. 
  

  

  Tetralonia, 
  Spin. 
  

   Kei/ 
  to 
  the 
  Tropical- 
  African 
  Species 
  o/Tetralonia, 
  Sjnn. 
  

  

  1. 
  (12) 
  Females. 
  

  

  2. 
  (5) 
  Segments 
  1-3 
  of 
  abdomen 
  at 
  least 
  uni- 
  

  

  colorous, 
  black 
  or 
  fulvous. 
  

  

  3. 
  (4) 
  Segments 
  1-3 
  black, 
  4 
  and 
  5 
  witb 
  [zibar.) 
  

  

  white 
  pubescence 
  candata, 
  Friese. 
  ( 
  Zan- 
  

  

  4. 
  (3) 
  Whole 
  abdomen 
  unicolorous 
  fulvous. 
  [(Nyasaland.) 
  

  

  Length 
  13 
  mm 
  sheffieldi, 
  sp. 
  u. 
  

  

  5. 
  (2) 
  Segments 
  1-5 
  or 
  2-5 
  basally 
  with 
  

  

  fascife 
  of 
  whitish 
  pubescence. 
  

  

  6. 
  (7) 
  Segments 
  1-5 
  basally 
  with 
  fascijie 
  of 
  

  

  whitish 
  pubescence 
  ; 
  margin 
  of 
  [(IMozambique.) 
  

  

  ch'peus 
  reddish 
  obsciiripes, 
  Fr. 
  

  

  7. 
  (6) 
  Segments 
  2-5 
  basally 
  with 
  fascias 
  of 
  

  

  whitish 
  pubescence. 
  

  

  8. 
  (9) 
  Large 
  species 
  : 
  length 
  15 
  1 
  mm 
  neave>,yi\c\\. 
  (Congo.) 
  

  

  9. 
  (8) 
  Medium 
  species, 
  9-10 
  mm. 
  ; 
  margin 
  

  

  of 
  clypeus 
  yellow. 
  

  

  10. 
  (11) 
  Scopa 
  brownish; 
  tegulfe 
  yellowish 
  [E. 
  Afr.) 
  

  

  brown 
  iiiermis, 
  Friese. 
  (Germ. 
  

  

  11. 
  (10) 
  Scopa 
  whitish, 
  brown 
  on 
  inner 
  side 
  ; 
  [(Lake 
  Nyasa.) 
  

  

  tegul« 
  reddish 
  yellow 
  ottiliensis, 
  Friese. 
  

  

  12. 
  (1) 
  Males. 
  

  

  13. 
  (IH) 
  Antennre 
  short, 
  scarcely 
  reaching 
  to 
  

  

  scutellum. 
  

  

  14. 
  (15) 
  Abdomen 
  with 
  segments 
  2-5 
  basally 
  [E. 
  Afr.) 
  

  

  with 
  fasciae 
  of 
  whitish 
  pubescence 
  . 
  lahrom, 
  Friese. 
  (Brit. 
  

  

  15. 
  (14) 
  Abdomen 
  unicolorous 
  fulvous 
  sheffieldi, 
  s,-^. 
  n. 
  

  

  16. 
  (13) 
  Antennte 
  long, 
  reaching 
  beyond 
  scu- 
  

  

  tellum 
  ; 
  labrum 
  normal. 
  

  

  17. 
  (22) 
  Labrum 
  pale, 
  white 
  or 
  yellow 
  or 
  

  

  yellow 
  with 
  brown 
  sides. 
  [E. 
  Afr.) 
  

  

  18. 
  (19) 
  Labrum 
  white, 
  wings 
  cloudy 
  inermis, 
  Fr. 
  (Germ. 
  

  

  19. 
  (18) 
  Labrum 
  entirelj^ 
  yellow 
  or 
  yellow 
  with 
  

  

  brown 
  sides. 
  

  

  20. 
  (21) 
  Labrum 
  entirely 
  yellow, 
  wings 
  hya- 
  [Fr.). 
  

  

  line 
  friesei,n. 
  n. 
  (fidvicornis, 
  

  

  21. 
  (20) 
  Labrum 
  yellow, 
  brown 
  laterally; 
  [Nyasa.) 
  

  

  wings 
  subhyaline, 
  subcoata 
  dark 
  . 
  . 
  nyassana, 
  Str. 
  (Lake 
  

  

  22. 
  (17) 
  Labrum 
  black 
  or 
  black 
  with 
  pale 
  

  

  centre. 
  

  

  23. 
  (26) 
  Labrum 
  black, 
  wings 
  hyaline. 
  

  

  24. 
  (25) 
  Pubescence 
  pale 
  ; 
  tergite 
  1 
  and 
  legs 
  

  

  densely 
  clothed 
  with 
  black 
  hair. 
  [geria.) 
  

  

  IO3 
  mm 
  simpsoiii, 
  sp. 
  n. 
  ( 
  N. 
  Ni- 
  

  

  25. 
  (24) 
  Pubescence 
  entirely 
  pale 
  sjdstedfi, 
  Fr. 
  (Kilinian- 
  

  

  fdjai-o.) 
  

   2Q, 
  (23) 
  Labrum 
  black, 
  whitish 
  in 
  centre; 
  [Nyasa.) 
  

  

  wings 
  cloudy 
  ottiliensis, 
  Fr. 
  (Lake 
  

  

  