76 Dr. Heuglin on some Birds of North-Eastern Africa. 
I cannot decide the question whether B.tachardus from Smyrna 
and from Southern Russia ought to be referred to the present 
species, nor do I know whether B . minor is a stationary bird in 
the Sudan. 
The following are the other known species of the genus in 
North-Eastern Africa:— 
1, 2. Buteo anceps and B. eximius, Brehm (‘Naumannia/ 
1854), are known to me only from the names. They are found 
on the Blue Nile. 
3. Buteo rufipennis, Sundev. and Strickl.* has been erro¬ 
neously taken by myself for a species of Circus, and described 
and figured as Falco miilleri, nob. Naumannia/ iii. 1849). 
Sundevall has correctly classed it as a Poliornis, Kaup. It is 
frequently found in the months from June to November round 
Chartum, on the Bahr el Abiad, and in Kordofan ; its habits 
approach to those of Circus pallidus, but it is also frequently 
found sitting on trees. 
4. Buteo rufinus, Rupp., is, without doubt, identical with 
Buteo ferox, Gm., and Butaetus leucurus , Naumann. I have found 
this beautiful bird from October to March, generally in pairs, along 
the Nile, in Upper Egypt and Nubia, and still more frequently 
in Eastern Sennaar, and in the forests of the North-Western 
Kolia. The iris is dark brown; bill bluish; base of the mandible 
lead-grey ; angle of the mouth, cere and feet yellowish. Imma¬ 
ture specimens have the ground-colour of the tail light brownish- 
grey, with ferruginous shades. The wings extend to a distance 
of 8 inches from the end of the tail. The total length of the 
male is about 20 inches ; that of the female 22 or 23 inches. 
5. Buteo augur, Rupp. 
This is a beautiful bird, representing B.jacal of Southern 
Africa. It is frequently found southwards from Mareb, in 
Eastern and Central Abyssinia. 
6. Buteo yulgaris, Bechst* 
Occasionally seen during the winter in Egypt. According to 
Riippell, “ Everywhere in N. E. Africa.” 
[To be continued.] 
* Proc. Zool. Soc. 1850, p. 214, pi. xxii. 
