642 BIRDS OF SOUTH AFRICA. 
several hundred yards, squatting at intervals, but all the time keeping 
a careful watch on its approaching enemy. 
Captain Trevelyan writes to us :—‘‘ Layard says that the Knorhaan 
is abundant throughout the whole colony. There are none about 
Kingwilliamstown ; but about twenty-one miles from Grahamstown, 
on the Dikkop Flats and all along the valley of the Fish River, 
except where the bush is too thick for them, they are in fair 
numbers.” 
Mr. Ayres writes that during Mr. Jameson’s expedition to 
Mashoona Land, none were met with to the north of Mangwato ; 
but southward they became more and more numerous, and on the 
Moloppo and Hart Rivers they were very plentiful. Mr. Andersson 
observes :—‘‘ I have frequently met with this bird to the south of 
the Orange River, and at no great distance from it; but I have 
never met with it to the north of that stream.” 
Top of head, back, part of wings, and tail, brownish black, varying 
in intensity, and crossed with irregular streaks of rufous, paling 
into white; stripe over the eye, reaching to the back of the head, 
ear-coverts, half-collar on back of neck, and part of wings, pure 
white; the rest of the plumage deep black; legs bright yellow. 
Length, 19”; wing, 12”; tail, 5’. The female differs from the male 
in having the whole of the head, neck, and breast of the same colour 
and markings as the back. 
The soft parts are given by Mr. Ayres :—“‘ Male.—Iris dusky 
tawny brown; bill horny ash at the tip, yellowish at base; tarsi and 
feet yellow. Female.—Iris light hazel; bill brownish horn-colour ; 
tarsi and feet as in the male.” 
Fig. Lath. Gen. Syn. B. pl. 69. 
615. Oris aFrrorpes, Smith. White-quilled Bustard. 
Eupodotis afroides, Layard, B. 8. Afr. p. 287. 
According to Sir Andrew Smith, this Bustard frequents the 
country to the north of the Orange River, and is rarely seen south 
of it. Its call differs considerably from that of O. afra, but in most 
of its habits they closely resemble each other. Dr. Exton has sent 
us eggs which differ in no way from those of 0. afra. Mr. Ayres 
writes :— These fine birds are only to be found in the upper 
districts of Natal, and not plentifully. In the Free State and 
Transvaal they are, however, very plentiful. The male birds are 
