1918.] the Birds of the Anglo-Egyptian Sudan. 697 



Closely related to P. nigricans come P. xanthopygos aud 

 P. X. reichenowi from Palestine and Arabia : as_, however, 

 there is so great a gap in the distribution, we think it 

 advisable to consider these also as forming distinct species. 



We have therefore the following species and races in the 

 Ethiopian Kegion : — 



a. White-vented or with a faint wash of yellow only. 



P. harhatus barbatus (Desf.). Morocco to Tunis. 



P. b. inurnatus (Fras.). Senegal to Niger. 



P. b. gabonensis Sharpe. Cameroon to Gaboon. 



P. b. arsino'e Licht. Egypt to Kordofan, Khartoum, aud 



Roseires. 

 P. b. schoanus Neum. Eritrea to Shoa. 

 P. b. somaliensis Reichw. N. Somaliland. 



b. Yellow-vented, without eye-wattle. 



P. tricolor tricolor Hartl. N. Damaraland to Congo and 

 Uganda ; of this we believe P. t. tangangicce Reichw. 

 aud P. t. phoiocephalus Mearns are synonyms. 



P. t. layardi Gurney. Eastern South Africa to Nyasaland. 

 We cannot dislingui&h P. t. pallidus Roberts, though 

 we have not seen the type. 



P. /. ngamii O.-Grant. Lake Ngami distr. 



P. t. micrus Oberholser. Coastlands of German and British 

 E. Africa westwards to Kilimanjaro. 



P. t.fayi Mearns. Higlilauds of western British E. Africa 

 to Elgon ; type locality Fay^s farm, 8000 ft. There is 

 a large series of birds which we identify with this form 

 in the British Museum. They are considerably larger 

 than P. t. micj'us and are darker on the head than 

 P. t. tricolor from Uganda. Wing-measurements 90 to 

 100 mm. and over, average about 97 mm. The wing of 

 P. t. micrus averages under 90 mm. 



P. t. minor Heuglin. Upper White Nile. 



