INDEX. 
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 
Myrmicide@, one of the three fa- 
milies of ants, 1; correlation of 
form of knot with power of 
stiuging in the, 13 
ECTARIES, uses of, 56 
Nests for ants, artificial, de- 
scribed, 3, 164; of ants classified 
and described, 23, &c.; three 
modes of formation of, sug- 
gested, 80; of Lasius niger de- 
scribed and illustrated, 42 
Neuters among ants, production 
of different forms of, 22 
Normann, M. de, honey ants 
brought from Mexico by, 47 
(ees or simple eye in 
ants, 10; absent in the work- 
ers of some species, 11; origin 
of, 182 
Gcodema cephalotes, the Saiiba 
ant, five kinds of individuals 
among, 21; extent of nest of, 
24; leaf-cutting among, 237; 
intelligence of, 239 
445 
POG 
Geophylla, sting in, 13 
Organ of sense in antenna of ant, 
226; in tibia of Gryllus, 231; 
in tibia of ant, 232 
Ormerod, Mr., as to the sense of 
hearing among wasps, 221 
Qva of aphis described, 71 note 
ARASITES 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 pups, 
129; existence of, apparently 
disproved, 147 
Pets, domestic animals kept as, by 
savages, 77 
Phases .of life among men and 
auts, 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 s'orage of grass 
seeds, 60 
Phora formicarum, its attacks 
on ants, 26, 74; described, 432 
Phoridz parasitic on ants, 67, 74; 
new genus and species of, 431 
Pigs kept as pets by savages, 77 
Plagiolepis pygmea, 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 
PlatyphoraLubbochii,67; described 
434 
Pogonomyrmex barbatus, stores 
“ant-rice,’ 61 
