210 



Index 



T. viridescens, 67 

 respiration, 106 

 Trochomorpha, 33 

 Trogodermd, food requirement, 8S 

 trypanosomes as parasites, 67, 141 

 tsetse flies, 68 

 tunicates, in ocean, 13, 93 



succession, 52 

 turbellarians, on land, 15 

 turbidity, of sea water, 42, 55, 82 

 turtles in estuaries, 26 



Uca, 38 



reproduction, 134 



respiration, 86, 108, 109 

 Uhd, beach zone, 19 

 Umbra, in mud, S7 

 Urdno taenia, in sunny pool, 90 

 urea, in blood, 76, 87, 117 



in lung- fishes, 130 

 uric acid, excretion, 34 



in reptiles, 130 

 urine, fly larvae in, 70 



of crustaceans, 129 



of frogs, 130 



variability, in marshes, 36 



temperature, 14 

 Varuna litterata, 27 

 Vducheria, 44 

 Verlaten Island, 46 

 vertebrates (see also various classes) 



as colonizers, 10 



body fluids, 112 



integument, 100 



kidneys, 129 



locomotion, 12-5 

 on land, 16 

 sense organs, 136 



wasps, breeding sites, 63 

 water, 7 



available, in marshes, 33 



excretion of, 77 



importance, 85 



thermal, 84 



vapor, 10 

 water-level and zonation, 55 

 water striders, 31 

 waves, 17, 81 



on beaches, 22, 55 

 whales, 14 



food chains, 91 



locomotion, 125 

 winds, 81 



worms (see also Nereis and various 

 classes) 



adaptabiUty, 41, 45 



adaptations, 38 



anaerobic, 109 



boring, 38 



dilution toleration, 71, 74 



in pools, 22 



locomotion, 125 



nematoids; 93 



oxygen consumption, 102 



sipunculids, 60, 112 



Yangtse River, dolphin, 27 



zinc, in sea water, 42 

 zonation, of animals, 54 

 on beaches, 19 



