were, as far as I can remember, of a yellowish or saffron color; which
I had never seen before. This difference in the color of the cocoon was
very likely produced by the change of food, although it has been stated,
and I think it may be quite correct, that with many species of native
lepidoptera the change of food-plants does not produce any difference of
color in the insects obtained. With respect to the Cynthia worms reared
on the laburnum instead of the ailantus, it may be that the moths, which
will emerge from the yellow cocoons, will be similar to those obtained
from cocoons spun by worms bred on the ailantus, and that the only
difference will be in the color of the cocoons.

The Kumaon Cynthia cocoons, as I found it to be the case with Indian
species introduced for the first time into Europe, did not produce moths
at the same time, nor as regularly as the acclimatized species. The
moths emerged as follows: One female on the 22d of July; one female on
the 25th; one male on the 3d August; one female on the 19th; one male on
the 28th of August; one male on the 2d September; one female on the 3d.
A pairing was obtained with the latter two. Two males emerged on the 4th
of September; one male on the 6th; one male and one female on the 22d;
one female on the 23d; and one female on the 25th of September. Five
cocoons, which did not produce any moths, contain pupae, which are still
in perfect condition; and the moths will no doubt emerge next summer
(1882). As seen in my note, a pairing of this wild Indian Cynthia took
place; this was from the evening of the 4th to the 5th of September. The
eggs laid by the female moth were deposited in a most curious way, in
smaller or larger quantities, but all forming perfect triangles. These
eggs I gave to a florist who has been very successful in the rearing
of silk-producing and other larvae; telling him to rear the Cynthia on
lilacs grown in pots and placed in a hot-house, which was done. The
worms, which hatched in a few days, as they were placed in a hot-house,