lo; — 



Obseriuïtiou — I hâve measured ail the spécimens in the British 

 Muséum and get the following resuit : 



a) Niam-Niam, French Equatorial Africa and North Belgian 

 Congo birds six skins) varv from 97-107 mm. and average 

 101,5 mm. The tvpe from Niam-Niam measures 107 and- co-type 

 102 mm. 



h) Uganda (19 skins) 99-108 mm. and average 104,3 """• ""^7 

 one skin falling below 102 mm. 



3. — LviUfS BIBENTATUS AETHIOPS. 



Lybiits bidciitatus acthiops Neumann, Bull. B. O. C, XXIII, 

 1908, p. 29 : Uba, Omo Région. 



Range. — Southern Abyssinia and Sudan. 



Distinguishin^ chaidctcrs. — Resembles aequatorialis in having 

 wing-band rose colour, but size smaller, see Observation. 



Observation. — Neumann restricted his race to Shoa, South 

 Ethiopian Lakes and Omo Région. Sci.ater and Praed (//>/>, 1919, 

 p. 6'5) remark that « there is hardly any ground for recognising it 

 (aethiops) as distinct » and thev name their Sudan birds aequato- 

 rialis. I hâve measured the British Muséum material with the 

 following results : 



a) Sudan and White Nile (10 skins) 95-103 mm- and average 

 98,8 mm. 



b) Abyssinia (11 skins) 96-102 mm. and average 98,8 mm. 



N'ote. — I am not much in favour of recognising sub-species 

 which are made merelv on size alone, especially when measure- 

 ments overlap, but in this case I think \ve are justified in keeping 

 up Professor Neumann's race. Certainly if we accept aethiops for 

 the Abvssinian bird on the grounds of its smaller size, we nuist 

 unité with it the Sudan birds as thev average exactly the same in 

 the wing measurement I 



