42 A TRIP TO A SOURCE OF THE SARAWAK RIVER 
between the river banks were flying several specimens of the Leaf 
Butterfly (Kallima inachus buxtoni, More.) a great rarity in 
Sarawak; I was fortunate enough to capture two specimens while 
both of them were at rest; contrary to Wallace’s observations in 
Sumatra they were quite easy to see, for one had alighted on the 
trunk of a large tree against the sky line, the other on a leaf over- 
hanging the water. The guide missed the path leading from the 
river, taking us some miles in the wrong direction. The hills were 
now becoming very steep and following each other in constant 
succession as the road crosses the ranges at right angles to their 
direction. At dusk we entered a new clearing for a paddy field; 
this the coolies hailed with delight as the Teringos house for which 
we were making could not be far distant; the path where it entered 
the jungle again forked, which caused some hesitation but on my 
guide assuring me that cither led to a house the choice was im- 
material. After climbing a steep hill, the house came in view. In 
the dusk we could see that it was now a mass of ruins and had 
been abandoned for some time. Night closed in before we regained 
the road so that walking was now a difficult matter, becoming a 
succession of slips and scrambles down the hill: before going far 
we met a Dyak who was returning home with some bamboos filled 
with ‘Ive Noor,” the slightly fermented juice of the sugar palm; 
this the coolies seized even before enquiring the way, which we now 
learned was only a short distance, and in a few minutes we were 
enjoying the welcome shelter of a house with rest and food after 
a tramp of nine hours. The next morning I decided to follow the 
river to the Teringos falls and if possible further. The river scenery 
is very beautiful, the banks in places rising in steep or precipitous 
cliffs covered with luxuriant vegetation, the river bed filled with 
enormous sandstone boulders breaking it into a series of cascades, 
in other places almost completely hiding it from view as it flows 
between them, I collected a number of interesting orchids and 
ferns, insects were rather scarce: only a few were taken, among 
them was a specimen of Melanitis zitenius, Herbst. Several others 
were observed and unlike Melanitis ismene were flying in the bright 
morning sunshine, their high and strong flight made them difficult 
to capture. To obtain if possible any interesting specimens of fish 
which might occur in an upland river, I exploded dynamite ear- 
tridges in two of the deep pools but with no result: nothing rose 
to the surface and a Dyak who dived assured that there were none 
at the bottom. A succession of minor fails were passed before 
reaching the chief, of which the total height must be over one 
hundred feet, it is broken into two cascades about twenty feet from 
the top: there was little water running now but after heavy rain 
when a large river is flowing the fall must be a magnificent sight. 
The path led to the face of the cliff which formed the water- 
fall and continued over it by a series of steep ladders, these are of 
the usual Dyak type, small tree trunks with deep notches cut 
forming steps. Above the fall the river has excavated a deep valley 
Jour. Straits Branch 
