ALLEN: MAMMALS FROM THE BLUE NILE VALLEY. 321 
plentiful on the Galegu. We found them rare on the Blue Nile, and 
saw them only in a few places, near Bados and Magangani, below 
Roseires. ‘They are more or less hunted here by passing sportsmen 
and have become shy and watchful. They usually go in small herds 
of ten or less and come to water at a few places removed from the - 
villages. After drinking they at once leave the river and are some 
miles back in the thorn bush by daylight. On the upper Dinder, 
where they seemed to have been unmolested for some time, their 
behavior was quite different. On our way up this river we first came 
upon them near a loop of the stream called Ereif el Dik (the cock’s 
comb, in allusion to the sinuous course of the stream), where a small 
herd was started at noon from under some ‘laloab’ trees, whose date- 
shaped fruit they had been nibbling on the ground. But it was not 
until the region of the big open meadows or ‘meres’ was reached, at 
Beit el Wahsh and Abiad that they. were found in numbers, while 
from this point to Um Orug they were very common. On one such 
‘mere’ we estimated that nearly a thousand were in sight, feeding 
quietly in the open most of the day, while it was not uncommon to 
count seventy-five or one hundred on smaller ‘meres.’ Contrary to 
their habits along the Blue Nile, they seemed to be here under no 
restraint, and largely avoided the dry thorn bush, but fed on the 
grassy ‘meres’ most of the day. They were nevertheless watchful 
and were usually the first after the Ariel to take alarm, and to run off 
in a somewhat panicky way. Two female specimens collected here 
in mid-February contained each a large foetus. 
BuUBALIS TORA RAHATENSIS Matschie. 
Eastern Sudan Hartebeest. 
Bubalis tora rahatensis Matschie, Sitzb. Ges. naturf. freunde, Berlin, 1906, 
p: 246. 
The type of this race came from Shunfar, a tributary of the Rahad, 
, and its deseriber mentions a second specimen from about thirty miles 
southwest of Lake Tana, adding that it apparently is found on the 
entire middle Blue Nile, the Rahad and the Dinder. We were unable to 
discover any sign of the species on the Blue Nile, however, and if it 
now occurs along that stream, west of the Abyssinian boundary, it 
must be extremely rare. On the upper Dinder, there are a few, but 
they are scarce indeed in comparison with the Tiang. From Abiad to 
