INDEX, 
219 
respiration, 6o ; experiment 
on cluster in winter, 6o; of 
blood, 59 ; of thorax greater, 
6i 
Theory of backward flight, 43 
Thorax, of bees, 31, 50, 55; of 
drone, 45; development of, 
159; muscles of, 31, 32, 45, 
55, 72; spiracles in, 51, 52, 86 
Thorley, J., 168 
Tibia, or shank, 32, 34, 36 
Tibial spur, 35 
Tichomiroff, 153 
Tongue, how folded out of 
view, 30; groove on, 27; of 
drone, 27 ; of queen, 27 ; pits 
on, 26 ; sheath of, 26 ; spoon 
of, 26; structure of, 25, 26 
Tracheae, 51, 55, 58, 59, 63, 85, 
86, 1 12, 130, 13s, 138, 155, 
159 ; filled with liquid in 
embryo, 155 ; minuteness of, 
53; moulted, ii, 159; of 
muscles, 45; of rectal glands, 
1 12; of wings, 39, 53, 162; 
spiral thread of, 52, 53 
Transformations, 12, 158 
Transparent membrane on ven- 
tral plates, 47 
Transition cells, 7, 180, 186 
Treviranus, 106, 116 
Trochanter, 32, 34 
Trophi, or organs of the mouth, 
18, 22 
U 
Undefined organs, 94, 95 
Under lip, or labium, 22 
Upper lip, or labrum, 22 
Urinary tubes, in, 161 
V 
Vasa differentia, 126, 128 
Velum of front leg, 34 
Ventral plates, 47, 170 
Ventricles of heart, 56 
Vertex, 18 
Vesicula seminalis, 126 
Vestibule of trachea, 85 
Viallanes, H., 65 
Vision, 102, 103 
Vitellus, or yolk, 136, 154, 161 
Vocal membrane, 85 
Voice, of bees, 83, 84, 87 ; of 
queen, 84, 87 
Voluntary, action of stomach 
mouth, 107 ; movement of 
decapitated insects, 66 
Vogel, F. W., II, 55, 70, 74, 
80, 81, 89, 93, ri2, 120, 126, 
127 
W 
Waterhouse, G. R., 176, 189 
Water used by bee, 7 
Wax, analysis of, 189; at first 
liquid, 17 1; colour of, 189; 
colour due to pollen, 189; 
costly to the bee, 173 ; 
glands, 169, 17 1; kneading, 
121; moulds, 170; not de- 
rived from pollen, 172; of 
scales and comb not alike, 
172; plate pincers, 36, 172; 
pockets, 1 7 1 ; scales or plates, 
47, 169, 170, 172 ; scales, 
colour of, 172; scales, mas- 
tication of, 172, 175; secre- 
ting cells, 17 1 ; secretion 
exhausting, 173; secretion, 
favourable conditions for, 
174; specific gravity of, 189 ; 
temperature at which pro- 
duced, 1 71 
Weaning, of drone larvae, 13, 
123, 157; of worker larvee, 
10, 120, 122, 124, 151, 152, 
i 157 
