ee 
324. BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
attack we watched the animal for some time and found that it came ~ 
very regularly to the surface for air at intervals of 3.5 minutes. The 
fight was short but furious, the men jabbing with their spears each 
time the enraged beast rose to attack the broadside of the boat. — 
When at last it rose no more, the watchers on the bank shouted exult- 
ingly and one twanged a small harp in praise of the hunters. No 
hippos were seen at Roseires, the head of navigation for large boats, 
but we observed a few above that town near Adreiba. On the Dinder 
there are very few, at least on the upper portion. This is partly on 
account of the intermittent nature of the stream, though in the larger 
pools an occasional one is found. At Um Orug a few skulls of young 
animals were seen, from which the front teeth had been removed. 
W. B. Cotton (1912, p. 48) says there are still a few in the Athbara 
and Setit Rivers, but none at all in the Rahad. 
PHACOCHOERUS AFRICANUS BUFO Heller. 
Nile Warthog. 
Phacochoerus africanus bufo Heller, Smithsonian misc. coll., 1914, 61, no. 22, 
DAZ: ; 
Small numbers of Warthogs are still to be found along the Blue 
Nile and on the upper Dinder. Dr. Phillips shot one at El Mesharat 
and we met with a few others along the river to Roseires. On the 
upper Dinder we saw not a few, once a party of three large ones with 
four young. As noted by Cotton (1912) there seem to be few if any 
with large tusks in this region. 
Two skulls preserved agree with Heller’s description of the Nile 
Valley Warthog, and, as he points out, differ from the East African race 
in the prolongation of the parietal portion and the nearly flat interorbi- 
tal region. 
DICEROS BICORNIS (Linné). 
Black Rhinoceros. 
Rhinoceros bicornis Linné, Syst. nat., ed. 10, 1758, 1, p. 56. 
The Rhinoceros is nearly extinct in the eastern Sudan. In the days 
of Sir Samuel Baker they were plentiful on the upper Atbara and the 
Setit, but now apparently there are extremely few between the Nile 
and the Abyssinian border. It is worth recording therefore, that at 
