VOYAGE UP WHITE NILE 77 



athiops] weighing", male, 12^, and female, 10 Ib. respec- 

 tively. I preserved the three skins and my men ate the 

 flesh. In 1919 I shot one of a curious fulvous colour. 



I smile now recalling that strenuous effort to secure 

 the two first-seen grivets ! for we subsequently found 

 them abundant enough both on Blue and White Niles, 

 and had no difficulty in procuring any specimens required. 



The same morning, thinking I saw something move 



GRIVET MONKEY. 



in the bush, I ran forward, but quickly realised that the 

 suspect was a savage female human ! Instantly she had 

 seized up a toto and plunging into a thicket, vanished 

 from view as smartly and effectually as the "old man" 

 monkey had done an hour before. 



THE SEROOT-FLY. 



"And it shall come to pass in that day, that the Lord shall hiss for the 

 fly that is in the uttermost part of the rivers of Egypt." ISAIAH, vii. 18. 



This insect-terror first appears in the region of Kosti 

 bridge, some 170 miles south of Khartoum, and thence 

 forwards forms a perpetual menace to peace. In general 

 appearance the seroot (Tabanus] resembles a clegg but is 

 quite twice as large. 



