8 Mr. D. A. Baiiiiernian : A Revision 



We are therefore left with the following uiue uames from 

 which to draw conclusions ; — 



1. Haplopelia simplex (Hartl.) (founded on a female). 



St, Thomas Is. 



2. H. principalis (Hartl,) (founded on a male). Prince's Is. 



3. H. inornata Reichw, (founded on a female). Came- 



roon Mt. 



4. H. hypoleuca Salvad. (founded on an adult male). 



Anuobon Is. 



5. H. poensis Alexander (founded on an adult female). 



Fernando Po. 



6. H, plumbescens Sharpe (founded on a young bird). 



S. Cameroon. 



7. H. seimundi Sharpe (founded on an adult male). 



Fernando Po. 



8. H. tessmanni Reichw, (apparently founded on an adult 



male). S. Cameroon, 



9. H. forbesi Salvad. (founded on an apparently adult 



female), Locality unknown. 



Haplopelia simplex and H. principalis are both recognized 

 as distinct species, and these names hold good. 



H. forbesi must also be recognized, for reasons hereafter 

 explained. 



H. tessmanni has already been proved synonymous with 

 H. plumbescens, and H. seimundi is undoubtedly the male of 

 H. poensis, the latter name having priority. 



There remain H, inornata, H. hypoleUca, H. poensis, and 

 H. plumbescens. 



From a close examination of these four * species, I first 

 came to the conclusion that all were synonymous, as the 

 CQck birds from each type-locality are absolutely indis- 

 tinguishable. 



* I have not handled a skin of H. s. hypoleuca, but the description 

 agrees exactly with males of the other three forms, all of which axe 

 represented in the British Museum Collection, 



