2O2 



INDEX 



Bastin, E. S., PI. 88. 



Bat skeleton of wing, 92. 



Bates, H. W. butterflies of Amazon 

 Valley, 51; terrifying attitude in cater- 

 pillar, 139. 



Bear, polar, 126. 



Beddard, F. E., 125, 127, PI. 62. 



Bee, carrying pollen, 154; color prefer- 

 ence, 159, 162; evolution of instincts, 

 76; honey-bee, three types, 22; mim- 

 icked by flies, PL 74; mimicked by 

 moths, PL 70; parasites, 146; pro- 

 tected by stings, 130, 135 ; sacrifice 

 of individuals for benefit of hive, 22; 

 sterility of workers, 23; warning color, 



130, PL 74. 



Beetle, Colorado potato-beetle, 131, PL 69; 

 color preference, 162; curculio, 134, 

 PI- 73 >' goldenrod-beetle, 131; Her- 

 cules beetle, 51, PL 30, lady-beetle, 



131, 135, PL 69, PL 73; leaf beetle, 

 123, PL 62; mimicry, 135, 136, PL 73, 

 sexual divergence, 51, 52; staghorn 

 beetle, 51, PL 2Q; warning color, 131. 



Behring Straits, migration across, 62, 112. 



Belt, moss insect, 122, PI. 61. 



Biology, Intro, ix, x. 



Bird, confusing coloration, 148; females 

 protectively colored, 50; gastrula, PL 

 42; males serve as decoys, 50; mim- 

 icry, 144, PL 80; noxious insects, 

 130; protective color, 118, PL 413-51; 

 recognition marks, 147, PL 82; segre- 

 gation, 65; sexual coloration, 149, 150; 

 sexual phenomena, 49-50; sexual selec- 

 tion, 53; skeleton, 92, no. 



"Birds of Eastern North America, Hand- 

 book of " (Chapman), 49. 



"Birds of New Guinea" (Gould), PL 25, 

 PL 26. 



Birth-rate, n, 12; relation to struggle for 

 existence, 17. 



Blackbird, sexual coloration, 150. 



Blastomere, 70. 



Blastopore, 101, 102, zoj, PL 42. 



Blind fish, 95. 



Blossoms, see Flowers. 



Bluebird, sexual coloration, 150. 



Blue crab, PL 40. 



Bluefish, 1 1 8, PL 48. 



Boa constrictor, vestigial limbs, 94. 



Boar, correlation between tusks and bristles, 

 36. 



Bobolink, sexual coloration, 150, PL 22. 



Bolton, Gambier, PL 68. 



Bombus Vancouver ensis, PL 74. 



Bonasa umbellus, PL 23. 



Borecole, PL 6. 



Bourru, friar-bird and oriole, 144, 145. 



Brassica oleracea, Pis. 4, a,-8; rapus, PI. 9. 



Breeding, in and in, 42 ; methods used, 29 ; 



mice (Castle), 44; breeding-time and 



segregation, 43. 

 Brehm, 4, 22, 31, 133, PL 24, PL 30, PL 33, 



PL 62, PL 99. 



Britcher, H. W., 137, PL 2, PL 64, PL 85. 

 Britton, N. L., 88, 89, 90. 

 Broccoli, PL 7, PL 8. 

 Bronze, invention of, 176. 

 Brown, Addison, 88, 89, 90. 

 Brussels sprouts, PL 7. 

 Bufo lentiginosus, PL 66. 

 Bugs, noxious character and warning 



color, 131, PL 69. 

 Butomus umbellatus, PL 86. 

 Butterfly, color preference, 162; confusing 



coloration, 147, PL 83; courting, 55; 



leaf butterflies, 123, PL 83; mimicry, 



137, PL 76, PI. 77; sexual color, 



ation, 51, PL 84; warning color, 131, 



PL 59, PL 76, PL 77, PL 84. 



Cabbage, varieties of, 29, Pis. 4, a,-8. 



Calamesia midama, 138, 150, PL 84. 



Calamus arctifrons, PI. $8. 



Calf embryo, PL 38. 



Callimorpha dominula and hera, PI. 70. 



Cattinectes hastatus, PL 40. 



Callionymus lyra, PI. 32. 



Calocalanus plumulosus and pavo, 57. 



Calopteryx maculata, PI. 33. 



Cambrian fossils, 106. 



Cambridge, PL 64. 



"Camera Shots at Big Game" (Wallihan), 

 PL 81. 



Cancer pa gurus, 100. 



Capital punishment, 25. 



Carboniferous fossils, 106. 



Cardinal, sexual coloration, 150. 



Carrion flower, 154. 



Castle, W. E., mendelian phenomena, 44. 



Caterpillars, protective color, PL 56; terri- 

 fying attitude, 139, 140, PI. 78 ; warning 

 color, PL 71. 



Catocala amatrix, PI. 60; concubens, PL 83, 



Cauliflower, PI. 7, PI. 8. 



Cave-dwelling animals, eyes, 95. 



Cemophora coccinea, PI. 79. 



