(al zeny ) 
been disturbed and had flown away to one grass-head after 
another. 
This brings out well the importance of seeing insects in their 
natural surroundings, for in this case a peculiarity in colouring 
is at once seen to be correlated with a marked departure from 
the attitude usually adopted by that particular group of 
moths. 
A very wonderful example of procryptic resemblance 
brought out by attitude was afforded by a Notodontid moth 
which I found on a leaf on one of the islands in L. Victoria 
(Scalmicauda niveiplaga, Hmpsn.). Only a single specimen 
of this species has been recorded hitherto, namely the type in 
the British Museum. It had such a perfect resemblance to a 
dead and rolled-up leaf that I had to look again and again, 
and almost to touch it, before I could satisfy myself that it 
was really a moth. 
The fore-wings, of a light brown colour, were closely brought 
together along the back, hiding the hind-wings, so that the 
two inner margins, of a slightly darker hue than the rest of 
the wing, came together along the middle line and represented 
the midrib of a leaf. The continuation of this into the petiole 
was represented by a large, upstanding, slightly curved tuft 
of long hairs projecting from the top of the head. 
The front of the head was very dark brown and represented 
exactly the dark shadow of the interior of a tube of rolled-up 
leaf. Strange though it may seem, this was the most realistic 
factor in the whole resemblance, and that which made it most 
difficult to realise that one was looking at a moth and not at 
a dead leaf. 
The fore-wings were light brown with several lines on them 
of a darker hue running out from the apparent midrib to 
represent veins on the leaf, and there were three doubly ringed 
markings resembling the marks made by the growth of minute 
fungi on dead leaves. Near the tip was an absolutely pure 
white small round spot which quite well represented a gap at 
the edge of a dead leaf with high light shining through. 
The antennae and legs were so carefully packed away that 
they were quite invisible. 
I think I have never been so completely puzzled by an 
