410 Dr. Heuglin on new or little-known Birds 



semitorguatus has been found hitherto only in South Africa, in 

 the country of Old Latakoo. 



II. CiRCAETUS ZONURUS, P. Wiirtcniberg. (Plate XV.) 

 C. cinereo-fuscus, subtus pallidior, epigastrio, ventre et hypo- 

 chondriis transversim albo fasciatis, subcaudalibus et tibiis 

 albis, brunneo fasciatis ; Cauda alba, hujus basi et fasciis 

 duabus latioribus uigris : remigibus et rectricibus supra 

 fusco-cinereis, subtus albidis nigi'o terminatis et fasciis 

 transversalibus vi-ix distinctissimis notatis : subalaribus 

 candidis ex parte dilute fusco variegatis : long, tota (maris 

 adulti) 19"5, alee 14'9, rostri a rictu 1'5|, tarsi 2"7|, caudse 

 7-9 poll, et lin. Gall. 

 Hab. In ripis Nili Albi. 



Prince Paul von Wiirtemberg collected a specimen of this 

 species of Circaetus nearly twenty years ago in the southern part 

 of the province of Fazogloa, between the Blue Nile and the rivers 

 Tumad and Yabiis. Although marked in so noticeable a way, it 

 has not yet been accurately described with the name which pro- 

 perly belongs to it, but only mentioned in some ornithological 

 communications, such as the ' Systematische Uebersicht ' of the 

 birds of North-Eastern Africa of Dr. E. Riippell. The only speci- 

 men known until lately is in the collection of its discoverer. It 

 has been shortly characterized by J. v. Miiller, in his ' Contribu- 

 tions to the Ornis of Africa,' as Circaetus cinerascens ; but the 

 figure there given by him is not to be recognized. The species 

 was not found again until the year 1853, when I discovered it on 

 the banks of the Beni-Schangallo,and at a later period on the Bahr 

 el Abiad, and sent specimens of it to several European museums. 

 Circaetus zonurus is the smallest of the African species of Cir- 

 caetus, measuring only from 19 to 20 inches (French) in length. 

 The bill is very robust ; the face is well provided with strong 

 bristles ; the head and eyes are large, the former being sur- 

 rounded by broad feathers, which the bird, when excited, can 

 raise up, like Helotarsus ecaudatus. The wings are comparatively 

 long, without extending to the extremity of the tail, which is 

 somewhat rounded. The tarsi are covered with feathers for 

 nearly one-half their length, and strongly reticulated ; the claws 

 are robust, and but slightly bent. Each toe has anteriorly on its 

 upper surface two entire shields, whilst the two or four follow- 



