3^50 [December, 
wander on to some adjoining leaf, the tip or side of which they roll 
downwards, and, in the roll thus formed, they feed greedily on the 
outer covering or epidermis, both of the upper and under surface of 
the leaf; and as soon as the stock of food within their immediate reach 
is exhausted, they roll the leaf a bit further along its length or breadth, 
and continue to repeat this process on other leaves till they are full fed. 
The larvfe do not always confine themselves to merely rolling the 
leaf along its under side, as some may be observed living inside leaves 
which have been doubled over, with their two edges united along their 
whole extent; others, again, may be found feeding between united 
leaves, after the fashion of the larvae of ChimabaccJie fagelJa and Oelechia 
triparella. I have never observed them feeding in this manner on 
privet, but on ash and lilac I have met with them repeatedly so situated; 
in the autumn of 1866 I particularly remember seeing a fine old ash 
tree in the Seven Sisters' Eoad, Holloway, on which very many of these 
larvae were feeding between united leaves. 
The fondness of the larvae for their three food-plants is exhibited 
by them in a marked manner ; for instance, if we collect three mined 
lilac leaves inhabited by these larvae when about to quit their mines, 
and place over the first a leaf of privet, over the second an ash leaf, 
and over the third a lilac leaf, we shall find that the larvae which had 
previously fed entirely on lilac will attack with perfect indiiferenco the 
three leaves offered to them. 
"When not overcrowded, this larva is a sociable little animal : I 
have placed those from several different localities together, and they 
fed quite amicably, and went through their transformations ; but, if they 
are overcrowded, they do not get on quite so comfortably together ; 
thus, I once placed 26 larvae between two large lilac leaves, and, on the 
third day, I observed several larvae that had been bitten by their com- 
panions were scattered on the leaf in a dying state. I have noticed 
that after the larva is once bitten, it never recovers from the effects of 
the bite ; the bitten part of the body turns black, the larva refuses all 
food, decreases gradually in size, and, after languishing for a few days, dies. 
{To be contimied.) 
A NEW SPECIES OF GONIOPTERYX FEOM AUSTRALIA. 
BY R. M'LACHLAN, F.L.S. 
The species described below is interesting as proving the occur- 
rence in Australia of these minute Neuropterous insects. It differs 
from the European and American species in its dark coloration, and in 
the almost entire absence of the usually conspicuous powdery covering ; 
yet the structural characters appear to be identical. 
