INDEX. un 



Analogous variation in the plumage of birds, 438. 



AndSy 525; anas a^uta, male plumage of, 446; anas boschas, male 

 plumage of, 446; anas histrionica, 552; anas punctata, 425. 



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

 age of, 560. 



Anatidae, voices of, 425. 



Anax Junius, difiEerences in the sexes of, 328. 



Andaman islanders, susceptible to change of climate, 214. 



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

 sikimmensis, 396; sounds of Echis caHnata, 400. 



Andrmmfulca, 331. 



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



Animals, domesticated, more fertile than wild. 50; cruelty of 

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

 change of breeds of, 680. 



Annelida, 299; colors of, 299. 



Anobium tesseilatum^ sounds produced by, 347. 



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

 throat-pouch of, 402. 



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

 the beak of, 484; anser hpperboreus, 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 PentTie^ 313. 



Anthidium manicatum, large male of. 316. 



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

 364; anthocharis genutia, ^^, anthocharis sar a, 354. 



Anthaphora acervorum, large male of, 316 ; anthophora retusa, 

 difference of the sexes in, 331. 



Anthropidae, 173. 



Anthus, molting of, 444. 



Antics of birds, 431 . 



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



Antiiocapra americana, horns of, 265, 575, 578. 



AntUope bezoartica, horned females of, 575, 577, 578; sexual differ- 

 ence in the color of, 611: antilope Dm'cas exichore, 575. 



AntUope euchore, horns of, 580; antilope montana, rudimentary 

 canines in the young male of, 586; antilope niger, sing-sing, cnama 

 and gorgon, sexual differences in the colors of, 612; afitilope areas, 

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

 strepsiceros, 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 antennae, 101; habits of, 167 ; difference of the 

 sexes in, 330; recognition of each other bv, after separation, 330: 

 white, habits of. 330. 



Anura, 395. 



Apatania muliebris, male unknown, 287. 



