350 



CALIFORNIA ACADEMY OF SCIENCES. 



Atthis 236 



Attidse, habits of, as proof of sexual 



selection 88 



Auriparus 236 



Ball, criticism of Darwin's instances 

 of acquired habits, 40; criticism of 

 Spencer's evidences of inheritance 

 of acquired characters, 43-44. 



Basileuterus 331 



Bathmism, definition of 65 



Becards 157 



Beckham, on pseudepisematic colors. . 199 

 Beddard, opposed to sexual selection, 

 88; on sexual coloration, 89-90; on 

 color in birds, 138; on eflfects of 

 food on color, 226; on influence of 

 light on pigmentation, 230; sum- 

 mary of Camerano's system of geo- 

 graphical colors, 238; on protective 

 mimicry, 239. 

 Belt, suggestions on natural selection 



as originator of species 114 



Bernicla magellanica, instance of high 



coloration in female 90 



Bilateral symmetry, explanation of . . . . 79 



Blackbirds 203,295 



red-winged.... 143, 154, 178,185,220, 292 



rusty 136 



yellow-headed 155, 291 



Bluebirds 203, 213, 222, 229, 335 



arctic 157 



Bobolink 149, 152, 183,290 



Bobwhite 185, 257 



Bonasa 260 



Boreal genera, Wallace's list of , . 236 



Brooks, modification of doctrine of 

 pangenesis, 5 ; secondary laws of 

 variation, 62; laws of variation crit- 

 icized by Gulick 72 



Brown birds, colors of, protective 196 



BrowB creeper, protective coloration 



of 197 



BubonidaB 273 



Bubo mexicanus 253, 254 



virginianus 243, 253, 254, 274 



arcticus 152 



subarcticus 210 



Bunting, lark 152,179,313 



indigo 157, 222 



varied 311 



Butcher-birds 216 



Buteo 269 



abbreviatus 147 



albicaudatus 206 



bcrealis 150, 206, 269 



calurus 179 



Buteo f uliginosus 147 



harlani 147 



latissima 206 



lineatus 269 



swainsoni 147, 150, 206 



Calamospiza U36, 313 



melanocorys 146, 152, 179, 218 



Calcarius 218, 303 



lapponicus 254 



ornatus 149 



pictus 254 



Callipepla 236, 258 



californica 258 



squamata 258 



Camerano, system of geographical col- 

 ors summarized by Beddard.... 238, 239 



Campephilus 280 



principalis 146 



Canaries, color of, changed by food 228 



Caprimulgidae 207, 283 



Caracara 272 



Cardinalis 153, 221, 310 



virginianus . . 157, 243 



Cardinella 330 



Carpodacus 153, 297 



cassini 254 



erythrinus grebnitskii 297 



mexicanus 244 



frontalis.. 136, 156, 184, 195, 229, 244 



purpureua calif ornicus 254 



Catbird 182 



Catharista atrata 146 



Cathartidae 267 



Cathartes aura 146 



Catherpes 236 



Cellular continuity, upheld by Morgan, 

 19-20; upheld by Eimer, 20. 



Centrocercus 236, 262 



Centronyx 236 



Ceophlceus 280 



pileatus 147 



Certhia 236, 333 



familiaris americana 197 



CerthiidBB 333 



Certhiola 318 



bahamensis 188 



Ceryle 278 



alcyon 175,192,198, 210, 278 



amazona 279 



cabanisi 279 



inda 279 



superciliosa 278 



torquatus 279 



Chachalacas 265 



Chsetura 215, 283 



Chamaea 236 



