Index. 725 



Boardman, Ml*., Albino birds in U. S., 476. 



Boitard and Corbie, MM., on the transmission of sexual peculiari- 

 ties in pigeons, 261; on the antipathy shown by some female pigeons 

 to certain males, 474. 



Bold, Mr., on the singing of a sterile hybrid canary, 419. 



Bombet, on the variability of the standard of beauty in Europe, 

 681. 



Bombus, difference of the sexes in. 331. 



Bombycidse, coloration of, 355; pairing of the, 360, colors of, 361. 



BombyctUa carolinends, red appendages of, 525. 



Bombyx cynthia, 315; proportion of the sexes in, 282, 285; pairing 

 of, 360; hombyx mori, difference of size of the male and female 

 cocoons of, 315; pairing of, 360; bombyx pemyi, proportion of sexes 

 of, 285; bombyx yamamai, 315; M. Personat on, 283; proportion of 

 sexes of, 285. 



Bonaparte, C. L., on the call-notes of the wild turkey, 425. 



Bond, F., on the finding of new mates by crows, 463. 



Bone, implements of, skill displayed in making, 55. 



Boner, C, on the transfer of male characters to an old female 

 chamois, 574; on the habits of stags, 587; on the pairing of red deer, 

 595. 



Bones, increase of, in length and thickness, when carrying a 

 greater weight, 36. 



Bonizzi, P., difference of color in sexes of pigeons, 261. 



Bonnet monkey, 171, 



Bonwick, J., extinction of Tasmanians, 209. 



Boomerang, 164. 



Boreus hyemalis, scarcity of the male, 287, 



Bory St. Vincent, on the number of species of man, 199; on the 

 colors of Labrus pato, 388. 



Bos etruscus, 576; bos gaurus, horns of, 576; bos moschatus, 604; 

 bos piimigenius, 571; bos sondaicus,\ioTnsoi, 576; colors of, 612. 



Botocudos, 163; mode of life of, 224; disfigurement of the ears 

 and lower lip of the, 656, 



Boucher de Perthes. J. C. de, on the antiquity of man , 2, 



Bourbon, proportion of the sexes in a species of Papilio from, 283. 



Bourien, on the marriage customs of the savages of the Malay 

 Archipelago, 683. 



Bovidae, dewlaps of, 608. 



Bower-birds, 461; habits of the, 432; ornamented playing-places 

 of, 104, 469. 



Bows, use of, 203. 



Brachycephalic structure, i)ossible explanation of, 63. 



Brachyura, 304. 



Brachyurus calvns, scarlet face of, 629. 



Bradley, Mr., abductor ossis metatarsi quinti in man, 47. 



Brain, of man, agreement of the, with that of lower animals, 6; 

 convolutions of, in the human fetus, 10; influence of development 

 of mental faculties upon the size of the, 60; influence of the devel- 

 opment of, on the spinal column and skull, 62; larger in some exist- 

 ing mammals than in their tertiary prototyi)es, 91; relation of the 

 development of the, to the jjrogress of language, 99; disease of the, 

 affecting speech, 99; difference in the convolutions of, in different 



