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Physiology = 351 1-4811 : — 
General 
.. 149 
Parthenogenesis, Viviparity 
.. 149 
Cycles of generations . . 
.. 149 
Sex. . 
.. 149 
Caste (vacant) 
Hermaphroditism . . 
.. 149 
Senses 
. . 150 
Particular functions 
.. 150 
Locomotion 
.. 150 
Metabolic . . 
. . 150 
Respiration 
.. 150 
Pigment, colour . . 
.. 150 
Environmental 
.. 150 
Regeneration 
.. 151 
Chemical . . 
.. 151 
Development= 35 15-4815 : — 
General 
.. 151 
Oogenesis . . 
.. 151 
Spermatogenesis . . 
.. 151 
Fertilisation and Embryology . . 
.. 151 
Postembryology, Metamorphosis 
.. 152 
Ethology =351 9-481 9 
General 
.. 153 
Ant-life 
.. 153 
Bee-life 
.. 154 
Wasp-life 
.. 155 
Termite- life 
.. 155 
Cavernicolous, Subterranean 
.. 155 
Aquatic 
.. 155 
Gregarionsness . . 
.. 155 
Migration, flight . . 
.. 155 
Sound-production 
.. 156 
Food-habits 
.. 156 
Parasitic 
.. 156 
Symbiosis . . 
157 
Nests, Habitat 
.. 157 
Sex-relations 
.. 157 
Oviposition and parental. . 
.. 157 
Hibernation, Phenology . . 
.. 158 
Instinct and psychology . . 
.. 158 
Resemblance and utility . . 
.. 158 
Attitudes 
.. 159 
Luminosity 
.. 159 
Natural history, special cases . . 
. . 159 
Pupal habits, cocoons 
.. 159 
Insects and plants 
.. 159 
Galls 
.. 160 
