The cocoons of Polyphemus I had in 1881 were smaller and inferior in
quality to those I had before. Those received in 1878 and 1879 were
considerably finer and larger than those which were sent in 1880 and
1881; besides, they were sent in much larger quantities. The cocoons
received this year (1882) are finer than those of 1881, but yet they
cannot be compared with those of 1878 and 1879.

With about sixty cocoons of _Telea polyphemus_ I only obtained three
pairings, which I attribute solely to the weakness of the moths, as
the weather was all that could be desired for the pairings. The moths
emerged from the 1st of June to the 20th of July. One male moth emerged
on the 7th September. This latter was one from a small number of cocoons
received from Alabama; the other cocoons of the same race had emerged at
the same time as the cocoons from the Northern States. In the Northern
States the species is single-brooded; in the Southern States it is
double-brooded.

The larvae of Polyphemus can be bred in the open air in England, almost
as easily as those of Pernyi, and even Cynthia; they will pass through
their five stages and spin their cocoons on the trees, unless the
weather should be unexceptionally cold and wet, as was the case during
the month of August, 1881, when the larvae had reached their full size;
they were reared this year on the nut-tree, and some on the oak. The
species is extremely polyphagous, and will feed well on oak, birch,
chestnut, beech, willow, nut, etc.

The moth of Polyphemus is very beautiful, and, as in some other species,
varies in its shades of color. The larva is of a transparent green, of
extreme beauty; the head is light brown; without any black dots, as in
Pernyi; the spines are pink, and at the base of each of them there is a