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 tM^anged 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. 43) says there are still a few in theAtbara 

 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, 

 p. 2. 



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 (Liuue). 

 Black Rhinoceros. 

 Rhinoceros bicornis Linne, 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 



