Index 



Odontosyllis sp.(?), 177. 

 phosphorea, 177. 



Oedicnemus, feathers, 356. 



Oenothera rubricalyx, 506. 



Olor, down, 329. 



columbianus, feathers, 329; figures 

 of down barbules, opp. 442. 



Onuphis parva, 195. 



Ophelina magna, 216. 

 mucronata, 218. 



Ophryoscolex, 46; table of generic 

 differences, 59. 

 caudatus, 48, 49. 

 purkyijei, 51. 



Opisthocomi, suborder of galliformes, 

 337. 



Oriolus, color modifications, 383. 



Osmotreron, green color, 277; feath- 

 ers, 360; down, 361; color modi- 

 fications, 362. 

 vernans, figures of barbules, opp. 

 430. 



Otididae, feathers, 351; relation- 

 ships, 354. 



Otis, plumules, 348; down, 353; rela- 

 tionships, 353. 

 tarda, feathers, 351; figures of 

 barbules, opp. 426. 



Palaeornis cyanocephalus, compound 

 colors in feathers, 278; color 

 modifications, 367. 



Palamedea, feathers, 330; relation- 

 ships, 331. 



Palmyridae, 179. 



Panama, Isthmus of, closure since 

 Mesozoic times, 241. 



Pandion, feathers, 335. 

 carolinensis, down, 336. 



Panthalis pacifica, 184. 



Paradisea apoda, ornamental plumes, 

 272; yellow color, 276; color 

 modifications, 383. 



Paraffin Bath, A New Self-Regulat- 

 ing, 39. 



Passeriformes, proximal barbules, 

 267 ; aftershaft, 269 ; ear coverts, 

 273; feathers, 380; down, 382. 



Parasabella media, 221. 



Parra spinosa, feathers, 356; figures 

 of barbules, opp. 428. 



Parridae, feathers, 356. 



Passeriformes, color modifications, 

 383; down, 382; feathers, 380; 

 relationships, 384; epiphyology, 

 summary, 384; figures of barb- 

 ules, opp. 438. 



Passerina amoena, color modifica- 

 tions, 383. 



Pavo, ornamental plumes, 272; re- 

 frangent surfaces in feathers, 

 278. 



Pectinaria brevicoma, 211. 



Peisidice aspera, 183. 



Pelecanidae, feathers, 312. 



Pelecanoides, aftershaft, 302; down, 

 306. 

 urinatrix, feathers, 305. 



Pelecanus, plumules, 257; down, 315. 

 californicus, lack of filoplumes, 

 260, 262; hoary feathers, 313; 

 figures of barbules, opp. 410. 

 erythrorhynchus, feathers, 312; 

 plumules, 257; lack of filoplumes, 

 260, 262; figures of barbules, 

 opp. 410. 



Penelope, feathers, 340. 



cristata, figures of barbules, opp. 

 420. 



Pennulum (tip), definition, 253. 



Peristeropodes, relationships, 342. 



Petasophora anais, color modifica- 

 tions, 377. 



Phaeromacrus resplendens, figures of 

 barbules, opp. 434. 



Phaethon, down, 315. 



flaviventris, figures of barbules, 



opp. 410. 

 longicauda, 262. 

 rubricauda, feathers, 314. 



Phaethontidae, feathers, 314; sys- 

 tematic position, 389. 



Phalacocorax, plumules, 257; nest- 

 ling down, 260; down, 315; sys- 

 tematic position, 388. 

 penicillatus, remex, 307; feathers, 

 308; figures of barbules, opp. 

 408. 



Phalaropus fulicarius, feathers, 356; 

 figures of barbules, opp. 428. 



Phasianidae, feathers, 339; refran- 

 gent surfaces, 278; color modi- 

 fications, 341. 



Phasianus torquatus, color modifica- 

 tions of feathers, 341. 



Phoenicopteri, feathers, 325; rela- 

 tionships, 326; epiphyology, 

 summary, 326; systematic posi- 

 tion, 389; figures of barbules, 

 opp. 414. 



Phoenicopterus ruber, red color, 277; 

 down, 326; figures of barbules, 

 opp. 414, of down barbules, opp. 

 442. 



Phyllodoce castanea, 187. 

 ferruginea, 186. 

 medipapillata, 187. 



Phyllodocidae, 186. 



Phylogenesis of birds, as modified 

 by morphology of feathers, 390, 

 391. 



Pici, feathers, 374; down, 376; fig- 

 ures of barbules, opp. 438. 



Picidae, feathers, 374; down, 376; 

 color modifications, 378. 



Pigment cells, amphibians, 167-172. 



Pionosyllis gigantea, 176. 



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