﻿the 
  Apidaj 
  in 
  the 
  British 
  Museum. 
  55 
  

  

  gem, 
  Fr., 
  except 
  that 
  in 
  this 
  species 
  it 
  is 
  the 
  typical 
  form 
  

   which 
  has 
  the 
  thorax 
  unicolorous, 
  whereas 
  in 
  A.hipartita 
  the 
  

   var. 
  Jlavicollis 
  is 
  so 
  marked. 
  Again^ 
  it 
  would 
  seem 
  that 
  

   A. 
  nigroclypeata, 
  Friese, 
  is 
  no 
  more 
  than 
  another 
  variet}^, 
  in 
  

   which 
  the 
  cljpeus 
  and 
  labrum 
  are 
  black, 
  with 
  the 
  cephalic 
  

   pubescence 
  of 
  the 
  same 
  colour. 
  Friese 
  (' 
  Die 
  Bienen 
  

   Afrikas,' 
  p. 
  270) 
  notices 
  the 
  near 
  relationship, 
  but 
  had 
  only 
  

   seen 
  specimens 
  of 
  the 
  two 
  forms 
  from 
  East 
  and 
  West 
  Africa 
  

   respectively. 
  The 
  two 
  forms, 
  however, 
  overlap 
  in 
  Uganda, 
  

   the 
  meeting-phice 
  of 
  the 
  East 
  and 
  West 
  African 
  fauna. 
  

   Further, 
  it 
  would 
  seem 
  that 
  the 
  diflference 
  between 
  nigro- 
  

   clypeata 
  and 
  Jlavicollis 
  applies 
  only 
  to 
  the 
  females, 
  since 
  

   a 
  large 
  series 
  of 
  males 
  from 
  the 
  following 
  localities 
  show 
  a 
  

   remarkable 
  similarity 
  : 
  — 
  Sierra 
  Leone 
  (/. 
  J. 
  Simpson), 
  S. 
  Ni- 
  

   geria 
  (W. 
  C. 
  W.jEakin), 
  N. 
  Nigeria 
  (J". 
  W. 
  tScott 
  Macfie), 
  

   Gold 
  Coast 
  {H. 
  T. 
  Palmer)^ 
  Uganda 
  Protectorate 
  and 
  Brit. 
  

   East 
  Africa 
  {^S. 
  A. 
  Neave), 
  Nyasaland 
  {J. 
  E. 
  S. 
  Old), 
  and 
  

   the 
  Transvaal 
  i^H. 
  P. 
  Thomasset). 
  

  

  Anthophora 
  acraensis, 
  F. 
  

  

  Without 
  having 
  seen 
  the 
  type 
  it 
  is 
  very 
  ditficult 
  to 
  deter- 
  

   mine 
  satisfactorily 
  the 
  typical 
  form 
  of 
  this 
  species. 
  There 
  is 
  

   a 
  large 
  series 
  in 
  the 
  British 
  Museum, 
  from 
  numerous 
  localities 
  

   in 
  both 
  tropical 
  and 
  subtropical 
  Africa, 
  apparently 
  referable 
  

   to 
  A. 
  aci-aensis. 
  The 
  specimen 
  described 
  by 
  Fabricius 
  (Ent. 
  

   Syst. 
  ii. 
  p. 
  329) 
  was 
  a 
  male. 
  Dours 
  is 
  certainly 
  correct 
  

   (Monogr. 
  Icon., 
  Anthophora, 
  p. 
  84, 
  1869) 
  in 
  interpreiing 
  

   the 
  " 
  caput 
  nigricans 
  " 
  referred 
  to 
  by 
  Fabricius 
  as 
  meaning 
  

   tliat 
  the 
  hairs 
  of 
  the 
  face 
  and 
  head 
  beneath 
  (/. 
  e. 
  behind 
  

   the 
  eyes) 
  were 
  white, 
  those 
  on 
  the 
  vertex 
  intermingled 
  with 
  

   black. 
  

  

  " 
  Ano 
  albo," 
  also 
  from 
  the 
  Fabrician 
  diagnosis, 
  is 
  very 
  

   vague. 
  According 
  to 
  Dours 
  (Z. 
  c.) 
  segments 
  6 
  and 
  7 
  are 
  

   covered 
  with 
  white 
  pubescence 
  mixed 
  with 
  ferruginous 
  ; 
  

   Friese 
  (' 
  Die 
  Bienen 
  Afrikas,^ 
  p. 
  269) 
  considers 
  segment 
  5 
  to 
  

   be 
  clothed 
  with 
  white 
  hair. 
  Probably 
  this 
  is 
  variable, 
  since 
  

   in 
  var. 
  albocaudata, 
  Dours, 
  segment 
  4 
  is 
  also 
  white. 
  

  

  Anthophora 
  advena, 
  Baiith 
  (type 
  in 
  B. 
  M.), 
  has 
  been 
  con- 
  

   sidered 
  cospecitic 
  with 
  A. 
  acraensis, 
  F.; 
  but 
  "thorax 
  . 
  . 
  . 
  

   subtus 
  niger 
  " 
  (Fabricius, 
  /. 
  c.) 
  does 
  not 
  agree 
  with 
  Smith's 
  

   species, 
  in 
  which 
  the 
  sternum 
  is 
  griseous. 
  The 
  fourth 
  and 
  

   following 
  segments 
  of 
  the 
  abdomen 
  are 
  clothed 
  with 
  white 
  

   pubescence, 
  as 
  in 
  var. 
  albocaudata, 
  Dours, 
  of 
  which 
  it 
  may 
  

   be 
  the 
  male. 
  

  

  