MYR

Myrmecocystus mexicanus, honey-
holding individuals among, 19;
foragers bring supplies of honey
to them, 47

Myrmecodia armata, its associa-
tion with ants, 58
Myrmecophilous insects, 68-78
Myrmica ruginodis, period of lar-
val life in, 7; length of life of
males of, 9; origin of a nest of,
32; observations on a wounded
specimen of, 96; experiments as
to recognition among, 121; as
to communication among, 164,
348; illustration of terminal
portion of antenna of, 227;
sense-organ in tibia of, 233;
their unwillingness to face a fall,
245

scabrinodis, cowardly nature
of, 27; Platyarthrus a guest of,

75

PARASITES of ants, 26, 67, 74,

431, 433; of bees, 26
Pass-word, experiments as to,
among ants, 108; supposed use
of, among bees and ants, 126;
experiments as to, with pupæ,
129; existence of, apparently
disproved, 147

Pets, domestic animals kept as, by
savages, 77

Phases of life among men and

ants, analogy between, 91
Pheidole megacephala, pugnacity
of small workers of, 20; experi-
ment as to power of communi-
cation among, 180; sense-organ
in tibia of, 233

-

— pallidula, the eye in, 11; com-
munication among, 158

- providens, its storage of grass
seeds, 60

Phora formicarum, its attacks
on ants, 26, 74; described, 432
Phorida parasitic on ants, 67, 74;

new genus and species of, 431
Pigs kept as pets by savages, 77
Plagiolepis pygmæa, the eye in, 11
Plants, relation of ants to, 50;
their different modes of defence
against unprofitable insects, 51
benefited by the action of in
sectivorous ants, 59

Plato, epigram by, quoted, 185
Platyarthrus Hoffmanseggii, aguest
of the ants, 75; experiments
with, 90

Platyphora Lubbockii,67; described
434
Pogonomyrmex barbatus, stores
'ant-rice,' 61

SIG

Gryllus, 231; on robbery among
Polistes, 286

Sight, how far ants are guided by,
251, 258, 266, 270
Signals given by ants, 158
Slave-holding, structural changes
induced by, 82; degradation
caused by, 89

Slave-making ants, 18; expedition
of, 81

Slavery among ants, origin of, 79;
degrading tendency of, 82-89
Smell of Myrmecina possibly pro-
tective, 17; on recognition
among ants by, 127; sense of,
among ants, 233; the probable
means of recognition among
bees, 281; sense of, keen among
bees, 288

Snake killed by Driver ants, 64
Soldiers among ants, 20; those of
Saüba do not fight, 22; their
origin, 22

Solenopsis fugax, the eye in, 11;

the enemy of its hosts, 78
Solomon on the foresight of the
ant, 59, 60

Sound, apparent insensibility of
ants to, 222; possible existence
of, beyond human auditory
range, 223, 233; how produced
by Mutilla, 229; apparent in-
sensibility of bees to, 290
Specialisation of form in flowers
correlated with colour, 308
Spectrum, experiments as to per-
ception of, by ants, 198
Spiders, their intelligence in es-
caping the Ecitons, 66; mimick-
ing an's, 66

Spiracles of ant, position of, 12, 14
Stenamma Woodwardii, the eye in,

11; found exclusively in nests
of Formica, 78
Stethoscope-like organs in antenna
of ant, 228

Sting in ants, possible correlation

of, with form of knot, 13; pro-
bable common origin of, in ants,

AME

TAM

1-

wasp,

behaviour of 3, 315
Tapinoma, length of period of
larval life in, 7

- erraticum, the eye in, 11; heir
agility, 24; Hetarius in nests
of, 77

Teazle, possible uses of leaf-cup
in, 52

Tetramorium cæspitum, the eye in,
11; feigns death as a defence,
17; alleged greediness of, 27;
enslaved by Strongylognathus,
84; entire dependence of Aner.
gates upon, 85

Texas, harvesting ants in, 61
Thiasophila angulata in ants' nests,
77

Thorax of ant described, 12
Tibia of Gryllus, sense organ in,
231; of Lasius, 232; of Locus-
tidæ, 233
Tomognathus sublævis, only
workers of, known, 87 note
Tracks of ants illustrated, 251-257
Tuning-forks, experiments with,

222

Tunnels formed by ants, 25
Tyndall, Professor, experiment