724 INDEX. 



male spiders, 250; on the proportion of the sexes m spiders, 287; on 

 sexual variation of color in "Spiders, 307; on male spiders, 307. 



Bladder-nose Seal, hood of the, 603. 



Blaine, on the affections of dogs, 597. 



Blair, Dr., on the relative liability of Europeans to yellow fever, 

 221 



Blake, C. C., on the jaw from La Naulette, 46. 



Blakiston, Capt., on the American snipe, 428; on the dances of 

 Tctrao phuMfinellus, 431. 



Blasius, Dr., on the species of European birds, 480. 



Bledim? tnurus, hornlike processes of male, 338. 



Bleeding, tendency to profuse, 268. 



BlenUiron, Mr., on sexual preference in horses, 598. 



Blemiies, crest developed on the head of male, during the breeding 

 season, 385. 



Bletldun miiltipiinctata, stridulation of, 343. 



Bloch, on the proportions of the sexes in fishes, 281. 



Blood, arterial, red color of, 296; pheasant, number of spurs in, 

 413. 



Blow-fly, sounds made by, 318. 



Bluebreast, red-throated, sexual differences of the, 537. 



Bluinenbacb. on Man, 32; on the large size of the nasal cavities in 

 American aborigines, 38; on the position of man, 170; on the number 

 of species of man, 199. 



Blyth, E., on the structure of the hand in the species of Ilylohrttett, 

 57; observations on Indian crows, 116; on the development of the 

 horns in the Koodoo and Eland antelopes, 265; on the pugnacity of 

 the males of Oallicrex criytntnti, 409; on the presence of spurs in the 

 ft male Etiplocnmus erythrophthalmus, 413; on the pugnacity of the 

 amadavat, 415; on the spoonbill, 425; on the moulting of Anthus, 

 444; on the moulting of bustards, plovers, and Gallus bankim, 445; 

 on the Indian honey-buzzard, 481 ; on sexual differences in the 

 the color of the eyes of hornbills, 483; on Oriolns mclanocephalus, 

 524; on Palteornisjava/iicus, 525; on the genus Ardetta, 524; on the 

 peregrine falcon, 525; on young female birds acquiring male charac- 

 ters, 524; on the immature plumage of birds, 529; on representative 

 species of birds. 533; on the young of Turnix, 543; on anomalous 

 young of Lfinius nifas and Colymbus yl<tci<du, 550; on the sexes 

 and young of the sparrows, 550; on dimorphism in some herons, 552; 

 on the ascertainment of the sex of nestling bullfinches by pulling 

 out breast feathers, 551; on orioles breeding in immature plumage, 

 552; on the sexes and young of Buphus and AilfHttomus, 553; on the 

 young of the blackcap and blackbird, 554. 555; on the young of the 

 stonecbat, 555; on the white plumage of Anaxtomiis, 561; on the 

 horns of Bovine animals, 575; on the horns of Antilope bezoartica, 

 575, 577; on the mode of fighting of <>ms cycloceros, 579; on the voice 

 of the Gibbons, 602; on the crest of the male wild goat, 606; on the 

 colors of Portax picta, 611; on the colors of Antilope bezoartica, 612; 

 on the color of the Axis deer, 61H; on sexual difference of color in 

 Hylobates houlock, 613 ; on the hog deer, 624 ; on the beard and 

 whiskers in a monkey becoming white with age, 637. 



Boar, wild, polygamous in India, 246; use of the tusks hy the, 

 685; fighting of, 591. 



