58 Miss iF Pownteine’s Descriptions of 
projections short and dull white, tapering to a blackish 
point, broad mid-dorsal stripe green, of a much bluer tone 
than the green of P. tarquinia; this is outlined with dull 
white, and the underside is dull whitish, with brown- 
madder streaks and shadings; about the centre of the 
caterpillar is a remarkable and most curious arrangement, 
a kind of three-cornered piece of skin, which is whiter and 
seems also to stand out from the rest of the surface, look- 
ing as if it would lift up. This also remains in the full- 
grown larva, the prevailing colour of which is a soft dull 
russet-brown, beautifully marked with a rich, dark-brown 
design, with just a suspicion of olive-green introduced. 
At this stage of its development, the larva leaves the tip 
of the mid-rib, and generally reposes at the stalk end of 
the leaf instead, often sitting in a most extraordinary 
twisted position, with head and tail end erect, looking 
exactly like a short brown twisted twig. The larva of 
P. trimenii I never had the good fortune to find myself, 
though I have been out with Mr. Leigh when he has done 
so, and on one occasion Bersa and I held down for him 
the lower bough of a Chrysophyllum natalense tree, which 
proved to have a full-grown ¢rimenii at the end of it, 
about which, however, a bargain was struck there and 
then, so that that specimen is now a fine darkly-coloured 
? in my collection. I never saw this caterpillar except 
in its last skin, but the following is an excellent descrip- 
tion, since sent to me by Mr. Leigh, with permission to 
publish it :—“ It is nearly black in colour when just hatched 
out, and immediately covers itself with its own frass; in 
the second skin it is grey, and looks more like a lot of 
large, grey frass all joined together, but the head is large, 
also grey. It gets away from its food in a more extra- 
ordinary manner even than P. imitator, on a web of its 
own, about the thickness of cotton, which is also grey in 
colour ; I measured one and found it seven and a half inches 
in length, and the larva at rest in the grey skin at the 
extreme end. It does not look like a [butterfly] cater- 
pillar at all, as it sits all of a heap, with its two hind- 
segments up in the air, like the larva of our Wotodontidae. 
The third skin is brown, and the white markings at side 
appear, also the four projections behind the head.” The 
full-grown larva is a most extraordinary-looking creature, 
as it sits at rest in the same queer twisted position 
assumed by P. emitator, looking exactly like an old rough 
