ALLEN: MAMMALS FROM THE BLUE NILE VALLEY. 355 



seem to be rare or altogether absent. Rothschild calls the Blue Nile 

 Baboon Papio lydekkeri, but Elliot places this as a nomen nudum under 

 P. cynocephalus. 



Lasiopyga griseoviridis (Desmarest). 

 Grivet Monkev. 



Cercopithecus griseoviridis Desmarest, Mammalogie, 1S20, 1, p. 61. 



The first monkeys seen were near El Mesharat two or three days' 

 journey up the Blue Nile from Singa. From this point to the Abys- 

 sinian border we saw them frequently, usually in small troops of old 

 and young in the large leafy ' sont ' trees near the river. At Abu Zor 

 they were rather tame, coming freely into the great trees above the 

 Government rest house, but elsewhere they were shy and commonly 

 took to flight on seeing us approach. They appeared well aware of 

 the fact that the scattered tree growth afforded no safe retreat, and 

 usually when surprised they came at once to the ground and dashed 

 off into the thorn scrub. On Gebel Fazogli we watched a troop of 

 these monkeys on several mornings. They spent much time on the 

 ground or running about among the rocks, searching for fruits of vari- 

 ous small trees. The two specimens brought back were both old 

 males, found singly on the Blue Nile at El Mesharat and ]\Iagangani 

 near Roseires respectively. 



On the Binder River we saw small troops of these monkeys along the 

 banks at several places, particularly at Kuka; on one occasion Dr. 

 Phillips came upon a small company of them at Um Orug scolding a 

 leopard that was crouching among thick bushes. 



An old male shot on the Blue Nile at Magangani had a curiously 

 deformed skull. One side of the braincase, orbit, and jaw had de- 

 veloped at a much slower rate than the other so that the long axis of 

 the skull was turned upon itself, and much deformation of the jaw 

 with resorption of the condyle had taken place. 



