— 23 — . 



ground there are swarms of small, dark-brown rodents, whose 

 tunnels and holes open up between the tufts, and the heaps of 

 excrement bear witness that these animals are extremely numerous. 

 The only birds I saw here were Cisticola prinioides prinioldes, 

 Finarochrou sordida rudolphi and Nedarinia tacazse, all of which 

 were common. 



Fig. 1. 



The crater-lake on the highest plateaujof Mounts Elgon. 



(The plants in the foreground are Seneeio Johustoni.) 



Some hundred feet below the highest point of Elgon there 

 is in a lateral crater a plateau with a lake about a couple of 

 hundred metres long and some 150 metres wide, and in addition 

 to this lake there are a few other smaller bodies of water. The 

 shore on the side of the lake facing the highest summit of the 

 mountain rises abruptly and is covered right up to the ridge 

 with tall and vigorous Seneeio Johnstoni and other plants. Up 

 here, at an altitude of about 13. 800 feet, the three last-men- 

 tioned birds were also common, and here and there Amydrus 

 morio riippelli could also be seen flying about. Only one specimen 

 of this bird was shot. High above the summit soared a couple 

 of CorvuUur albicollis and in the icy water of the lake swam a 



