144 COLLECTING EXPEDITION TO BATANG PADANG. 
sumatranus, Kaffl., also ablue-backed flycatcher, a red and 
a green-backed, yellow-crested woodpecker. Most of these 
will, I hope, turn out to be either new or at least new to the 
Peninsula. I also succeeded in catching two more of the little 
tree frogs I have already mentioned, and three of a much larger 
frog which, however, has nearly the same habits and vocal 
powers. Itis of a very rugged appearance and of a chocolate 
colour with cherry red hands and feet and beneath it is mottled 
with black and white. 
It has been identified provisionally by Dr. A. GUNTHER as 
Polypedates leprosus. When on the trunk of atree itis quite 
invisible, from its exact resemblance both in colour and texture 
to a piece of reddish brown bark, and is a very good example 
of mimicry of an inanimate object. ‘This frog was spawning, 
and last year near the Resident’s Cottage on the Larut Hills, 
in the month of September, [ found a quantity of its tadpoles. 
The spawn is a jelly-like mass deposited just above the water 
line on the wooden sides of the hole. 
There is on Batu Puteh a rather pretty snail. The shell is 
light brown with a white stripe running round it, bordered on 
each side by a band of green. It appears to belong to the 
Flelicide and ina full grown specimen, measures nearly 2 
inches in diameter. It is evidently nearly allied to the large 
Ffelix which occurs on the higher parts of the Larut Hills. 
Near the extreme summit of Batu Puteh I found a snail of a 
species I have not seen before. 
At this time I suffered a good deal from the bites of a minute 
mite, probably a Zetranychus, which produced inflamed lumps 
all over me, each lump lasting for several days and itching and 
smarting intolerably, particularly at nights. This insect has 
much the same effect as the well. known English “ harvest 
bug”’ which is also a Zetranychus. ‘Ticks of both the large 
and small variety were unpleasantly abundant in the jungle 
near the camp, but fortunately leeches were seldom met with. 
On the 22nd in climbing up out of a steep rocky ravine, with 
a gun in one hand and some fungi | had just been collecting 
in the other, I slipped and fell, giving my back a strain which 
kept me in for the next two days and hurt more or less for over 
a month afterwards. 
