INDEX. 



351 



Chats 329 



yellow-breasted 215 



Chelidon 314 



erythrogaster 216, 218 



Chondestes 180, 216, 236, 304 



grammacua 217 



Chordeiles 207,210 



texensis 253, 255 



virginianus 255 



henryi 185,253 



Chuckwill's widow 186 



Cinclidae 332 



Cinclus 332 



ardesiacus 332 



leuconotus 332 



mexicanus 218, 219, 332 



Circus 268 



hudsonicus 206 



Clivicola 315 



riparia 215 



Coccothraustes 296 



vespertinus 157, 221 



Coccyges 275 



Coccyzus 276, 277 



americana 277 



erythrophthalmus 277 



maynardi 277 



minor 277 



Ccerebidae 318 



Coues' Key, table of characters of Hel- 

 minthophila 324 



Cognate colors, definition of 152 



Colaptes 280, 281 



auratus 282, 155, 156, 182 



cafer 155, 156, 173, 176, 203 



Colinus 257 



graysoni 258 



ridgwayi 185 



virginianus 185 



cubanensis 146 



floridanus 258 



Colors, classification of, by Poulton, 

 194; definition of aptatic, cryptic, 

 procryptic, anticryptic, pseudose- 

 matic, puesdaposematic, pseudep- 

 isematic, sematic, aposematic, 

 episematic, directive, discrimina- 

 tive, sexual, socialistic, epigamic, 

 194-210. 



Colors, geographical distribution as 

 factor in evolution of, 234: Beddard 

 summarizes Camerano's system of 

 geographical, 238-239; J. A. Allen 

 on, 247, 



Color in birds, general principles of, 

 137; Beddard on, 138; theory of, 

 138-139. 



Colors in North American Genera, pro- 

 portion and distribution of, 143- 

 144; black contrasting with white 

 breasts, 148; black with yellow or 

 browu nnder parts, 148; black with 

 rose patch on breast, 148; upper 

 parts black, under parts light col- 

 ored, 148; lower parts and top of 

 head, black, 149 ; on ways of assum- 

 ing a black plumage, 150, 151. 

 Color, Garman on variation in colors 



of animals, 231 



Color, variation of, with sex, age or 

 season, 211; Darwin on, 212, 213. 

 215; effects of food on, 226, 227, 228. 



Columbae 265 



Columba fasciata 205 



Compsothlypis 324 



Concentration, law of, 64 ; definition of, 

 77. 



Contopus 215 



Oope on retardation, 25-26; definition 

 of Bathmism, 65; on law of extent 

 and density, 66; on laws of acceler- 

 ation and retardation, 73; on four 

 laws of structure, 77-78; instance 

 of law of retardation, 169. 

 Correlation of growth, definition of 79 

 Correlative colors, definition of 154; 

 instances of, 155-157; exceptions 

 to, 157. 



Corvidaa 288 



Corvus 146,215, 236 



cryptoleucus 152, 290 



Cowbirds 290 



Cracidae 265 



Creepers 333 



brown 197 



honey 318 



Crossbills 156 298, 219 



Crotophaga 276 



ani 146 



sulcirostris 146 



Crows 203, 212, 215,288 



Cryptic colors defined 194 



Cuckoo 198 



American 277 



Cuculidaa 275 



Cuculus canorus 275 



