344 Mr. C. O. Farquharson’s Five Years’ Observations 
the ants simply walked round them. I then cut off a 
piece of the bark and enclosed the larvae in a perfectly 
clean tin. This morning I found fresh frass. The food 
material is about the most unpromising stuff ve ever 
seen. 
March 18, 1917.—1 have a nice series of the Lycaenid 
with the Lymantrid-like larva. There is no question about 
their not being carnivorous, nor leaf-eaters, nor flower- 
eaters, but cortex-feeders. I have not yet cleared up 
what part of the cortex it is of which they are specially 
fond. I am inclined to the lichen theory still, for I now 
know of two trees of distinct Orders on which the same 
larvae occur, one a Ficus (Moraceae, Tribe Ficeae), the 
other an Apocynaceous tree which I believe is Alstonia 
congensis (author’s name [Engler] I do not know at present, 
but I will find out). Now these two Orders are widely 
separated, but have one thing in common—latex. But 
the larvae live on old bark and it cannot be the common 
factor, latex, that they are after, for they would have to 
do what a Bostrichid beetle could hardly do, and, as a 
matter of fact, it takes a good deep cut on old cortex to 
draw latex. The marks of their mandibles even when one 
sees them feeding are not visible to the eye, and what 
they take off must be a very thin layer indeed. The 
lichens on these trees are of the extremely thin crustaceous 
variety—so thin that they simply look like different 
coloured portions of normal cortex, and that makes 
observation all the more difficult. 
5. The Larval Food of Liptenine Allies of Teratoneura 
—Epitola, Hewitsonia, Iridopsis, Citrinophila, Eresina. 
Feb, 26, 1916.—I am practically satisfied that the whole 
group with hairy larvae, 2. honorius, Hewitsonia, Lridopsis 
[including almost certainly Citrinophila and Eresina], feed 
on Algae or lichen on the bark of the trees on which they 
occur. I’ve examined frass of Hewitsonia and honorius 
too. However, I will I’m sure be able to confirm it next 
tour. The honorius larvae, as you received them, were 
shrivelled a bit, but in life they were exactly similar to 
Hewitsonias, so much so that I thought their brown colour 
as distinct from the mottled ereyish-green of the Hewitsonia 
larva was a cryptic variation, as they were on a tree with 
brown bark. 
March 18, 1917.—I am certain that Hewitsonia is of the 
same type as T'eratoneura. Curiously enough | have seen 
