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of North-Eastern Africa . 
alaribus albidis : iride umbrina: rostro et pedibus plumbeo- 
nigricantibus : long, tota 4*10, rostri a fronte 07, alse 2*9, 
caudse 1*9, tarsi 07'3 poll, et lin. Gall. 
This variegated bird is the smallest of the species of Pogono- 
rhynchus in N.E. Africa. The forehead and top of the head are 
bright scarlet, the face round the ears, neck, and wing-coverts 
shining black. A band over the eye and along the head brim¬ 
stone-yellow in front and pure white behind. The middle of the 
neck is spotted with white. The rest of the upper surface is not 
of so bright a black as the neck. The scapularies generally on 
the outside are broadly bordered with white; the back of the 
neck and upper wing-coverts are spotted with yellow; the wings 
and tail are bordered on the outside with pale yellow ; the lower 
back and upper tail-coverts are deeply tinged with greenish 
yellow, so that the dark ground-colour is hardly perceptible. 
The wing-feathers below are edged with white, more broadly 
towards their bases : the lower side is brighter than the upper, 
as is likewise the case with the tail; the under surface is whitish, 
tinged with yellow about the breast and belly. In young birds 
the under tail-coverts along the shafts are shaded with greyish 
black. 
While both the preceding species are spread from 10° N.L. 
southwards along the explored course of the White Nile, P. dia- 
dematus appears to have a more westerly range. The numerous 
examples that have passed through our hands were all collected 
westward of the Bahr el Abiad in the districts of Gog, Djak, 
Djar, &c., between 7° and 8° N.L., and on the river Bahr el 
Ghazal. The food of this species consists of insects, berries, and 
fruits. 
P. diadematus has, like P. hifrenatus } a loud and lively note, 
deep and melodious. 
4. Trachyphonus squamiceps. (Plate V. fig. 4.) 
T. margaritato affinis, sed differt, statura multo minore, facie 
et vertice flavo-rufescentibus; tectricibus caudse superi- 
oribus vivide flavis; capite (mento excepto) collo et pectore 
chalybseo guttatis : nucha albida, nigricante variegata : iride 
brunnea : rostro cinCrascente-carneo : pedibus plumbeis. 
This little species much resembles in size, structure, and 
