11 
was a very fine one, and dark. His (Mr. A.) specimen had been sent 
to him alive, and, having spent some hours in a chip box, had injured 
itself considerably, but he had been fortunate in obtaining a few eggs, 
which produced larvre in due course, and he expected the imagines 
shortly now. On the larval nest of a gregarious Europterid moth. 
—Mr. Tutt exhibited a nest of an Europterid, which he had received 
from Dr. Chapman, who had cut it from a pine tree in the neigh¬ 
bourhood of Cannes the previous week. He did not know which 
species it was—one member suggested pityocampa — as he was quite 
ignorant of the larvie of the members of the genus to which they 
belonged. The larvie were busy feeding, some being outside the web 
at the time the exhibition was being made. Mr. Tutt said that, when 
not feeding, the larva; retired within the web, and came out again to 
feed. He also referred to the indicating properties the hairs of these 
creatures were said to possess, but stated that, although he had 
handled these larvie, he had felt no ill effects. The eggs of T. bistor- 
tata and T. crepuscularia (biundularia). — Mr. Tutt made some 
remarks on eggs of T. bistortata, eggs of T. crepuscularia ( biundularia ) 
and eggs of $ T. bistortata, that had been fertilised by a $ T. biun- 
iliularia. The first two sets showed considerable differences, which 
were exhibited by drawings made under the microscope by Messrs. 
Rowe and Baty. The eggs of T. bistortata, as exemplified by the batch 
that had been examined, were long and cylindrical, with rounded ends. 
Those of T. crepuscularia (biundularia) were of only about two-thirds to 
half thecubical contentsof those of T. bistortata, and, although exhibiting 
considerable variation, were of a somewhat oval form, or inclining to 
the shape of a hen's egg. To the naked eye, there did not appear to 
lie much difference in colour, both being of a pea-green, but those of 
T. crepuscularia (biundularia) were of a somewhat yellower tint. 
Under the microscope, however, the difference of colour became more 
marked, that of T. bistortata appearing of a pearly-green hue, that of 
T. crepuscularia being yellow, and whilst the shell of the former was irides¬ 
cent and slightly transparent, that of the latter was somewhat opaque. 
There were also faint traces of longitudinal ribbing, just round the 
shoulder of the micropylar end, in the egg of T. bistortata, such traces 
not being discernible in the egg of T. crepuscularia. The egg of T. 
bistortata, too, was also noticeable for small irregular depressions, which 
occurred on the surface, and which appeared to be due to pressure or the 
contraction of the protoplasmic contents of the egg. These were not 
to be seen in the egg of T. crepuscularia, the shell of which appeared, 
under a high power, to be minutely pitted. Another character of 
differentiation in the two sets of eggs observed, was in the position of 
the lateral depression, which is so characteristic of many Geometrid 
eggs. In the egg of T. bistortata, the depression was placed well 
toward the micropylar end, whilst in the egg of T. crepuscularia it is 
placed much nearer to the centre. In the set of T. bistortata eggs 
examined, which had been fertilised by a male T. biundularia, the 
general shape, colour and appearance were very similar to those of the 
first set of T. bistortata. The eggs were, however, slightly smaller, 
and tended to be a little more rounded at one end than the other, 
showing some trifling variation between the two sets, and one or two 
of the eggs out of a considerable number examined, exhibited a most 
complete oval shape. They were, however, still very distinctly T. 
