94 INSECTS INJURIOUS TO FOREST PRODUCTS. 
Termites of Eastern United States, etc. — Continued. Page. 
eggs, seasonal occurrence in colony 43 
forms, or castes, situation in nest 47-48 
functions of castes 31-32 
"guests, " or inquilines 71-72 
historical 16-19 
"immune" (i. e., resistant) woods 76-82 
larvae, description 31 
larvae, situation in nest 47, 48 
life cycle 33^6 
metamorphosis 33-36 
neoteinic reproductive forms, seasonal occurrence in colony 44 
neoteinic reproductive forms, situation in nest 47 
neoteinic royal individuals, function 33 
nests, situation 22-25 
number of individuals in colonies 25-27 
nymphs of reproductive forms, seasonal occurrence in colony 43-44 
nymphs, primary form, description 29-30 
nymphs, progressive development 36-43 
nymphs, secondary form, description 30 
nymphs, situation in nest 47 
parasites 72 
photographs, methods of obtaining them for illustrations 82-83 
polymorphism 27-33 
preventives of injury 76-82 
relation of hog wallows and prairie mounds thereto, bibliography 85 
remedies 76-82 
reproductive forms, description 65-68 
reproductive forms, occurrence 53-65 
reproductive forms , situation in nest 47 
resistant woods 76-82 
"royal cell," situation in nest 47 
royal pair and other reproductive forms 53-68 
soldiers, seasonal occurrence in colony 45 
seasonal variations in colony 43-45 
sense organs 31-32 
situation of different forms in nest 47^48 
soldiers, description 28-29 
soldiers, function 32 
soldiers, situation in nest 48 
summary and conclusion based on results of experiments 72-75 
swarming dates 68-69 
swarm, or so-called nuptial flight 48-49 
winter location of colony 45-46 
workers, description 28 
workers, function 32-33 
workers, situation in nest 48 
Termitidae 15 
Termitina 15 
Termitophilus insects 71-72 
Termopsinae 16 
Termopsis 16 
