TOCKUS ERYTHRORYNCHUS. 131 
Adult.—Head grey, with a very broad white band extending over 
the eye from the lores and joining on the neck ; sides of face, throat 
and entire under parts white ; the ear-coverts slightly streaked with 
black, more distinctly on the fore-neck and chest, some of the 
feathers narrowly margined with greyish-black ; upper surface of the 
body blackish, the centre of the back white; all the wing-coverts 
spotted with white near the tip; quills black, glossed with green 
near the base of the primaries, which have each a white spot about 
the centre of their outer web, the outermost secondaries entirely 
white, marked with black near the base, the inner secondaries brown 
externally edged with white; four centre tail-feathers black, the rest 
black at base, white at tip, the white increasing in extent towards 
the outermost tail feather, where it occupies nearly two-thirds of its 
extent ; ‘Iris tawny-yellow, bare skin round the eye dark pink; bill 
bright yellow with brown margins” (Ayres) ; iris yellowish-white. 
(Buckley.) Mr, Andersson observes :—“ The irides are yellow; 
the legs and toes are very dark brown; the colour of the bill ap- 
_ proaches orange-yellow, with the exception of the edges, upper ridge 
and the tips of the mandibles, which are reddish-brown ; in the young 
bird the bill is sometimes very dark coloured.”: 
Total length about 16°5 inches; wing, 7°8; tail, 8:0; tarsus, 1°5. 
Fig. Hartlaub, P. Z. 8. 1865, pl. 4. 
122. Tockus ERYTHRORYNCHUS. Red-billed Hornbill. 
Buceros erythrorhynchus, Layard, B. 8. Afr. p. 227. 
Sundevall gives this species as an inhabitant of Kaffraria, but we 
haye not seen it ourselves from that locality, It was procured by 
Victorin at the Knysna in April. Mr. Buckley shot a female in the 
Matabili country on the 5th September, 1873, and Mr. Ayres has 
found it to be numerous about the River Limpopo. Dr. Kirk gives 
anote on the species in the Zambesi, where it is called by the 
natives ‘‘ Koppi :”—“In all open woodlands common, feeding on 
fruits and insects ; breeding in the hollows of trees during the season, 
the female being closed in during the time of incubation, when she 
moults her feathers, and is unable to fly.” 
Mr. Andersson writes as follows :—“ Common in Ondonga, at the 
Okavango River, and for some distance to the south of that stream ; 
and I have obtained specimens from Lake N’gami. I have also met 
with it in Damara Land proper, at Objimbinque and Schmelens Hope.” 
K 2 
