in Celebesian butterflies, probable use of, 175.

LOCUSTIDAE, adaptive colouring of, 64.

LUMINOUSNESS of some insects a protection, 71.

LYCAENIDAE, probable means of protection of, 176.

MAMMALS, mimicry among, 107.

MAN, does he build by reason or imitation, 212;
his works mainly imitative, 225;
antiquity of, 303, 322;
difference of opinion as to his origin, 304;
unity or plurality of species, 305;
persistence of type of, 306;
importance of mental and moral characters, 312;
his dignity and supremacy, 324;
his influence on nature, 326;
his future development, 326;
range of intellectual power in, 339;
rudiments of all the higher faculties in savage, 341;
his feet and hands, difficulties on the theory of natural
selection, 349;
his voice, 350;
his mental faculties, 351;
difficulty as to the origin of the moral sense in, 352;
development of, probably directed by a superior intelligence, 359.

MANTIDAE, adaptive colouring of, 64;
mimicking white ants, 98.

MALACODERMS, a protected group, 93.

MALURIDAE, 255.

MATTER, the nature of, 363;
Mr. Bayma on, 363;
is force, 365.

MECHANITIS and Methona, mimicked by _Leptalis_, 83.

MECOCERUS, dimorphism of, 155.

_Mecocerus gazella_, 94.

MEGACEPHALON, 196.

MEGAPODIDAE, sexual colouring and nidification of, 246.

MEROPOGON, 196.

_Midas dives_, 97.

MIMETA, mimicking Tropidorhynchus, 104.

MIMICRY, meaning of the word, 74;
theory of, 76;
among Lepidoptera, 77;
how it acts as a protection, 80, 81;
of other insects by Lepidoptera, 89;
among beetles, 91;
of other insects by beetles, 95;
of insects by species of other orders, 97;
among the vertebrata, 99;
among snakes, 101;
among tree frogs, 103;
among birds, 103;
among mammals, 107;
objections to the theory of, 108;
by female insects, 110;
among Papilionidae, 179;
never occurs in the male only, 260.

MOMOTIDAE, sexual colouring and nidification of, 241.

MONTROUZIER, M., on butterflies of Woodlark Island, 152.

MORAL sense, difficulty as to the origin of, 352.

MORPHOS, how protected, 73.

MURRAY, Mr. Andrew, objections to theory of mimicry, 108.

MUSCICAPIDAE, sexual colouring and nidification of, 245.

MUSOPHAGIDAE, sexual colouring and nidification of, 242.

NAPEOGENES, all the