Lake Kiwu and its Islands 107 
they had been conspicuous neither for their rich variety nor for 
the beauty of their colouring. I was therefore all the more 
pleased to find my original conceptions of tropical butterflies 
realised to some extent in the Kwidschwi forest. Large wonderful 
fapilionidcB^ nymphalidce^ etc., fluttered in the moist sand on 
the edges of the rivulets which crossed our path and enchanted 
us with their glorious, delicate metallic gleaming colours (Salamis 
macardii)^ or their creamy velvety black wings decked with 
striking green or bronze golden hues (Papilio phorcas and 
mackinnoni). Others, again, offered exceptional interest through 
their strongly developed mimicry, like the common Kallima rumia, 
which, when resting on a branch with wings folded, is very 
difficult to distinguish from a dry leaf. In these spots, too, 
away from the native villages, the monkeys showed themselves 
less timid, so that, after all, we managed to secure a few of 
them without very much trouble. They were greyish-green 
in colour, with deep black heads and hands. Strange to say, 
they appeared to be identical with a variety (Cercopithecus 
StuhLmanni)y hitherto found only on Mount Ruwenzori. This 
was a curious coincidence, as the Ruwenzori chain is two hundred 
kilometres distant from Lake Kiwu, and separated from it 
by a region exhibiting entirely different conditions of life 
from the slopes of Ruwenzori and the islands and banks of 
Lake Kiwu. 
One day the pygmies came into camp bringing their booty, 
a live, full-grown male monkey. They had carefully shut it 
into a hastily woven basket. Our attempt to keep the animal 
alive failed through its savageness. It behaved in a most furious 
manner, and, attached to the cord which we had placed round 
its hips, it made such mad leaps and dashes that it injured 
itself internally and died. Unfortunately we were unable to 
learn how the Batwa had caught him. One could not ascertain 
anything from them by direct methods. Tamate maintained 
that they teased the monkeys by yells and noises and arrow- 
shots from tree to tree, until they sprang to the earth and 
could be captured. One day, when returning to camp, I heard 
