f species or varieties of Danais or Acraea
which inhabit the same districts.

Passing on to India, we have Danais tytia, a butterfly with
semi-transparent bluish wings and a border of rich reddish brown. This
remarkable style of colouring is exactly reproduced in Papilio agestor
and in Diadema nama, and all three insects not unfrequently come
together in collections made at Darjeeling. In the Philippine Islands
the large and curious Idea leuconoee with its semi-transparent white
wings, veined and spotted with black, is copied by the rare Papilio
idaeoides from the same islands.

In the Malay archipelago the very common and beautiful Euploea midamus
is so exactly mimicked by two rare Papilios (P. paradoxa and P. aenigma)
that I generally caught them under the impression that they were the
more common species; and the equally common and even more beautiful
Euploea rhadamanthus, with its pure white bands and spots on a ground of
glossy blue and black, is reproduced in the Papilio caunus. Here also
there are species of Diadema imitating the same group in two or three
instances; but we shall have to adduce these further on in connexion
with another branch of the subject.

It has been already mentioned that in South America there is a group of
Papilios which have all the characteristics of a protected race, and
whose peculiar colours and markings are imitated by other butterflies
not so protected. There is just such a group also in the East, having
very similar colours and the same habits, and these also are mimicked by
other species in the same genus not closely allied to them, and also by
a few of other families. Papilio hector, a common Indian butterfly of a
rich black colour spotted with crimson, is so closely copied by Papilio
romulus, that the latter insect has been thought to be its female. A
close examination shows, however, that it is essentially different, and
belongs to another section of the genus. Papilio antiphus and P.
diphilus, black swallow-tailed butterflies with cream-coloured spots,
are so well imitated by varieties of P. theseus, that several writers
have classed them as the same species. Papilio liris, found only in the
island of Timor, is accompanied there by P. aenomaus, the female of
which so exactly resembles it that they can hardly be separated in the
cabinet, and on the wing are quite undistinguishable. But one of the
most curious cases is the fine yellow-spotted Papilio coeon, which is
unmistak