— 268 — 



kers on African birds are entitled to ask that their increasiiigly 

 difficult task should not be complicated by the création of nnmbers 

 of new races, without very careful considération of ail the tacts. 

 The case cited is fortunatelv not tvpical of Dr Van Someren's 

 work ; manv of the Uganda races are good subspecies though 

 several recentlv described are exceedinglv poor. 



Dicrurus atripennis. 



Dîcrurus dtripennis Swains, Bds West Africa, I, 1837, p. 256. — 

 Tvpe local itv : .Sierra Leone. 



This bird is now included from S. Nigeria on the strength of the 

 Sonthern Nigérian bounderv having been extended since the war to 

 include the Rio del Rev (late German Cameroon territorv) : A spé- 

 cimen oi D. shaipei having been obtained there bv Sir H. Johk- 

 STON in 1887. 



In Northern Nigeria the following additional nienibers of the 

 geniis are known to occur, which bave not vet been recorded from 

 Southern Nigeria : 



Dicrurus sharpei. Oustalet. 



This species has been obtained at Shonga bv W. A. Fokbes and 

 at Katseena river bv Alexander. For the range of this species 

 see Ibis, 1920, p. 445, to which add French Equatorial Africa and 

 Belgian Congo. 



Dicrurus ausimii.is divaricatus (Licht). 



Obtained from Kaduma river, Laminga, Ibi and Maifoni bv 

 BoYD Alexander on his ;onrnev from the Niger to the Nile, 

 1904- 1906. 



The complète range, chief characters and original références 

 of ail the forms mentioned are given bv me in Ibis, 1920, 

 PP- 439-445- 



