156 



INDEX 



Cambarus affinis, habit formation, 



106 



Camp cooking, 62 

 Camping, 57, 60, 61, 65 

 Capitalization, 69 

 Carabidae, 



early stages, 73 



food relations, 127 

 Carbohydrates, effect on resistance 



to lack of oxygen, 99 

 Carbonic acid, reaction of fish to, 



118 



Card-index system for records, 64 

 Carrion-feeding insects, 146 

 Castration, parasitic, in insects, 130 

 Catalogues of governmental publi- 

 cations, 65 

 Caterpillars, 74 



reactions, 106 

 Cave associations, 143 

 Cave environment, 144, 145 

 Cave fauna, 



European, 144 



origin of blind species, 144 

 Cave habitats, 112, 144 

 Cave-inhabiting bats, habits and 



sensory adaptations, 112 

 Cave life, 



effect on Arthropods, 101 



effect on nutrition, 101 



effect on sense organs, 101 

 Cell and its medium, chemical 



studies, 88 

 Census, 



bird, 59 



invertebrates, 62 



of four square feet, 58, 62 

 Centers of dispersal for beetles of 



North America, 145 

 Cerambycidae, food habits, 72 

 Cestoda and Cestodaria, index to 



literature of , 129 

 Chaetognatha, 



classification, 115 



distribution vertically, 115 



San Diego region, 115 

 Challenger, 23 

 Change, laws of, 79 

 Changes, in fresh-water habitats, 

 sequence, 86 



Changes, in land habitats, sequence, 



86 

 Chemical stimulations, responses 



to, 97 

 Chemical studies on the cell and its 



medium, 88 



Chicago, physiographic ecology, 88 

 Chicago region, animal communi- 

 ties, 134 

 Chinch-bug, 20 

 Chorology, 2 



Chrysomelid beetles, evolution, 119 

 Chrysomelidse, 



aquatic, 75 



food habits, 72 

 Cicindela, 90 

 Cicindelidae, 



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 

 Coccinellidse, food relations, 127 

 Cocooning habits of spiders, 118 

 Cold-blooded vertebrates, digestion 

 influenced by season and tem- 

 perature, 100 



Cold Spring Beach, Collembola, 136 

 Cold Spring sand spit, animal 



ecology, 136 

 Coleoptera, 



centers of dispersal, North Ameri- 

 can, 145 



