_Attacus mylitta_ (_Antheraea paphia_).--I did not receive a single
cocoon of this species for the season 1881. My stock consisted of seven
cocoons, from the lot received from Calcutta at the end of February,
1880. Five were female, and two male cocoons; one of the latter died,
thus reducing the number to six. The moths emerged as follows: One
female on the 21st of June, one female on the 26th, one female on the
28th, one female on the 1st of July, and one male on the 3d of August;
the latter emerging thirty-four days too late to be of any use for
rearing purposes. The last female moth emerged, I think, about the end
of September. These cocoons had hibernated twice, as has been the case
with other Indian species. I had Indian cocoons which hibernated even
three times.

_Attacus cynthia_, from the province of Kumaon.--With the Atlas cocoons,
a large quantity of Cynthia cocoons were collected in the province
of Kumaon. Both species had, no doubt, fed on the same trees; as the
Cynthia, like the Atlas cocoons, were all inclosed in leaves of the
_Berberis vulgaris_, which shows that Cynthia is also a polyphagous
species. It is already known that it feeds on several species of trees,
besides the ailantus, such as the laburnum, lilac, cherry, and, I think,
also on the castor-oil plant; the common barberry has, therefore, to be
added to the above food plants.

These Kumaon Cynthia cocoons were somewhat smaller and much darker in
color than those of the acclimatized Cynthia reared on the ailantus. The
moths of this wild Indian Cynthia were also of a richer color than those
of the cultivated species in Europe.

During the summer 1881, I saw cocoons of my own Cynthia race obtained
from worms which had been reared on the laburnum tree. These cocoons