Part 62

Cicindelidæ, habits, 121 life histories and larval habits, 118

Ciliary action of shell-fish, 114

Circulars of U. S. Bureau of Entomology, Index to, 73

Clams, eaten by Fulgur, 110 eaten by Sycotypus, 110 growth of the soft, 114 hard, 114 life history of the common, 114 soft, 114

Classification, 21 animal habitats, 138 genetic, 56 habitats, 139 mollusks’ habitats, 138 physiological, 21, 101, 133, 134

Climate, influence upon insects, 135

Climatic sequences, 91

Climax biotic associations, 30

Coccinellidæ, food relations, 127

Cocooning habits of spiders, 118

Cold-blooded vertebrates, digestion influenced by season and temperature, 100

Cold Spring Beach, Collembola, 136

Cold Spring sand spit, animal ecology, 136

Coleoptera, centers of dispersal, North American, 145 food, 76, 77 insectivorous, 127 of Isle Royale, 145 transformations described, 72

Collecting, 49, 50, 59, 61 directions for, 39 natural history specimens, 63 of specimens, 49, 50

Collembola, Cold Spring Beach, 136

Colonial forms, 132

Colonies founded by Atta sexdens, 128

Color changes of tree frogs, 112

Colors of insects, warning, 128

Commensals, 132 of ants, 120

Community, biotic, 141 Epinomia, 139 gulls, 106 gulls, organization, 134 living beings, 6 social, 18, 123, 131 See also Associations

Communities of land animals, 91, 124 vegetational control, 90, 133

Comparative method, 14, 15 limits, 56

Comparative physiology, 95

Comparative psychology, 120 French work in, 107 limits, 109

Competition of animals, in new territory, 126

Competition, ants and plants, 126 cotton boll weevil, 125