ii. 514, 523

_Bunælurus_, N American Tertiary, i. 134

_Bungarus_, ii. 383

_Bungia_, ii. 452

_Bunocephalichthys_, ii. 444

_Bunocephalus_, ii. 444

_Buphaga_, ii. 288

BUPRESTIDÆ, ii. 495

_Buprestidium_, Oolitic insect, i. 167

_Busarellus_, ii. 348

Bush-shrikes, ii. 297

Bustards, ii. 356

_Butalis_, ii. 270

_Butastur_, ii. 348

_Buteo_, ii. 348

_Buteogallus_, ii. 348

BUTEONINÆ, ii. 348

_Buteola_, ii. 348

_Buthraupis_, ii. 98

Butterflies, arrangement of, i. 103 Palæarctic, i. 187 of Central Europe, i. 196 of the Mediterranean sub-region, i. 205 of Azores, i. 207 peculiar to Siberian sub-region, i. 220 of Japan and North China, i. 227 of the Ethiopian region, i. 255 number of Ethiopian species, i. 256 of Indo-Malay sub-region, i. 342 of the Australian region, i. 404 of the Austro-Malay sub-region, i. 404 of the Moluccas, i. 419 of Celebes, peculiarities of, i. 434 of New Zealand, i. 457