INDEX. 717 



Analogous variation in tlie plumage of birds, 488. 



Anas, 525; anas acuta, male plumage of, 446; anas boscha8> male 

 plumage of, 446; ana* histrijuicn, 552; anas pnuctata, 425. 



Anastomus oscitans, sexes and young of, 553; white nuptial plum- 

 age of, 560. 



Anatidae, voices of, 435. 



Anax jnitiiLS, differences in tlie sexes of, 328. 



Andaman islanders, susceptible to change of climate, 214. 



Anderson, Dr., on the tail of Macacus brunneus, 66; the Bufo 

 Stkimmensiy, 396; sounds of JEchix cariuata, 400. 



A ndrania fulca, 331. 



Anglo-Saxons, estimation of the beard among the, 663. 



Animals, domesticated, more fertile than wild, 50; cruelty cf 

 savages to, 133; characters common to man and, 166; domestic, 

 change of breeds of, 680. 



Annelida, 299; colors of, 299. 



Anobium temtellatum, sounds produced by, 347. 



Anolis crixtatellux, male, crest of, 401; pugnacity of the male, 401; 

 throat-pouch of. 402. 



Anser canadaiMfi, 473; anser cygnoides, 471; knob at the base of 

 the beak of, 484; a user hyperboreus, whiteness of, 560. 



Antelope, prong- horned, horns of, 265. 



Antelopes, generally polygamous, 246; horns of, 265, 575; canine 

 teeth of some male, 572; use of horns of, 580; dorsel crests in, 606; 

 dewlaps of, 608, winter change of two species of, 619; peculiar 

 markings of, 621. 



Antennae, furnished with cushions in the male of Penthe, 313. 



AntJddiiun inaiiicatum, large male of, 316. 



Anthocharis cardamines, 350, 354; sexual difference of color in, 

 364; anthocharis (jetLittia, 354; anthoc.haris sara t 354. 



Anthophora acervorvm, large male of, 316; anthophora retusa, 

 difference of the sexes in, 331. 



Anthropiciae. 173. 



Auikny, molting of, 444. 



Antics of birds, 431. 



Antigua, Dr. Nicholson's observations on yellow fever in, 222. 



Antilocapra americftna, horns of, 265, 575, 578. 



Aittilope bczoarticft, horned females of, 575, 577, H78; sexual differ- 

 ence in tlie color of, 611: nut Hope Dorcas enchore, 575. 



Antilope euchore, horns of, 580; autilope inontana, rudimentary 

 canines in the young male of, 586; antilope niger, tittff-ttTiff, caama 

 and yoryou, sexual differences in the colors of, 61 2; antilope orens, 

 horns of, 265; aiitilope saiga, polygamous habits of, 246; antilope 

 strcpsiceroit, horns of, 265; antilope subgutturosa, absence of suborbital 

 pits in, 604. 



Antipathy, shown by birds in confinement, to certain persons, 467. 



Ants, 167; large size' of cerebral ganglia in, 60; soldier, large jaws 

 of, 70; playing together, 77; memory in, 83; intercommunication of, 

 by means of the antenna?, 101: habits of, 167; difference of the 

 sexes in, 330; recognition of each other by, after separation, 330; 

 white, habits of. 330. 



An ura, 395. 



Apatania muliebris, male unknown, 287. 



