Hemidactylium, ii. 413

Hemidactylus, ii. 399
Hemierges, ii. 397
Hemigalea, ii. 195
Hemignathus, ii. 277

Hemimantis, ii. 419
Hemiodus, ii. 445
Hemiphractus, ii. 420
Hemipimelodus, ii. 443
Hemiprocne, ii. 320
Hemipus, ii. 270
Hemirhamphus, ii. 450
Hemisilurus, ii. 442
Hemisorubim, ii. 442
Hemistilbon, ii. 109
Hemisus, ii. 414
Hemitriccus, ii. 101
Hemixus, ii. 267
Henicognathus,,ii. 328
Henicopernis, ii. 349
Henicophaps, ii. 333
Henicorhina, ii. 264
Henicornis, ii. 103
Heptapterus, ii. 444
Heredia, ii. 413
Herons, ii. 359

Heros, ii. 438

Herpestes, ii. 195

Herpetethiops, ii. 376

Herpetodryas, ii. 376

Herpeton, ii. 376

Herpetoreas, ii. 375

Herpetotheres, ii. 348

Herpetotherium, N. American Tertiary, i. 134

Herpsilochmus, ii. 104

Herring, ii. 454

Hesperia, ii. 480

HESPERIDE, ii. 480

Hesperomys, N. American Tertiary, i. 140

in Brazilian caves, i. 145

S. American Pliocene, i. 147

ii. 230, 231

Zealand plants, i. 464

Hoopoes, ii. 317

Hopladelus, ii. 442

HOPLEGNATHIDÆ, ii. 433

Hoplobatrachus, ii. 421

HOPLOCEPHALA, ii. 460

Hoplocephalus, ii. 383

Hoplocetus, European Pliocene, i. 112

Hoplophoneus, N. American Tertiary, i. 134

Hoplophorus, ii. 246

Hoplopterus, ii 356

Horites, ii. 258

Hornbills, ii. 316

Horses, fossil, in Indian Miocene, i. 121

perfect series of ancestral, in N. America,
i. 136

probable birthplace of, i. 154

ii. 211

Horse-shoe bats, ii. 182

insects of, i. 341

coleoptera of, i. 342

terrestrial mollusca of, i. 343

zoological relations of islands of, i. 345
recent geographical changes in, i. 357
probable origin of fauna of, i. 359
Inia, ii. 209
Insectivora, European Miocene, i. 117
N. American Post-Pliocene, i. 129
N. American Tertiary, i. 133
Insectivora, classification of, i. 87

of the Palearctic region, i. 181
of N. China and E. Thibet, i. 222
range of Palæarctic genera of, i. 239
of Madagascar, i. 273

range of Ethiopian genera of, i. 301
of the Oriental region, i. 315
range of Oriental genera of, i. 372
range of Australian genera of, i. 476
INSECTIVORA, ii. 186

INSECTIVORA, general remarks

distribution of, ii. 191
summary and conclusion, ii. 541
Insects, means of dispersal of, i. 32
tenacity of life of, i. 33

on the

adapted to special conditions, i. 33
groups selected for the study of their
geographical distribution, i. 102

antiquity of the genera of, i. 166
fossil of European Miocene, i. 166
European Cretaceous, i. 167
European Wealden, i. 167
Palæozoic, i. 168
Palearctic, i. 187

of Central Europe, i. 196

of the Mediterranean sub-region, i. 205

of the Siberian sub-region, i. 220

of the Manchurian sub-region, i. 227

of the Ethiopian region, i. 255

of the E African sub-regionu, i. 260
of W. African, i. 265

S. African, i. 268

of Madagascar, i. 282

general remarks on, i. 284

of tropical Africa and America, probable
cause of similarities in, i. 291

of Indo-Chinese sub-region, i. 332

of the Oriental region, i. 318

of Ceylon, i. 327

of Indo-Malay sub-region, i. 341

statistics of collecting in the various
islands of the Malay Archipelago, i. 343
of the Australian region, i. 403

of New Guinea, i. 417

of the Moluccas, i. 420
of the Timor group, i. 426

of Celebes, i. 454

of New Zealand, i. 458

scarcity of, in New Zealand, i. 462
influence of, on the flora, i. 463
of the Neotropical region, ii. 13

of S. Temperate America, ii. 42

of S. Temperate America, Palæarctio
affinity of, ii. 45

of the Mexican sub-region, ii. 55

of the Antilles, ii. 73

of the Nearctic region, ii. 122

of Canada, ii. 137

distribution of, ii. 468

range of, in time, ii. 469

summary and conclusion, ii. 550

lines of migration of, ii. 551
Iodopleura, ii. 102

Iolama, ii. 107

Iolaus, ii. 477
Iole, ii. 267

Iora, ii. 267
Iphias, ii. 478

Land-shells, Palæozoic, i. 169

Palæaretic, i. 190

of Madeira, i. 209

of the Cape Verd Islands, i. 215

of the Ethiopian region, i. 257

of W. Africa, i. 265

of Madagascar and the Mascarene Islands,
i. 285

of the Indo Malay sub-region, i. 344

of the Australian region, i. 407

of the Sandwich Islands, i. 466

of New Zealand, i. 459

of the Neotropical region, ii. 19

of the Antilles, ii. 75

conditions favouring development of, ii. 75

of N. America, ii. 124

general observations on the distribution
of, ii. 522

richness of islands in, ii. 525

their mode of diffusion, ii. 525, 528

comparative distribution of Operculate

and In-operculate, ii. 526

estimated numbers of, ii. 526

table of Ethiopian families of, i. 299

of the Oriental region, i. 318

table of Oriental families of, i. 369

of the Australian region, i. 404

table of Australian families of, i. 472
of the Neotropical region, ii. 13

of the Antilles, ii. 73

table of Neotropical families of, ii. 90
of the Nearctic region, ii. 122
Nearctic families of, ii. 143
LEPIDOPTERA, ii. 470
Lepidosiren, ii. 458

LEPIDOSTEIDÆ, ii. 459

Lepidosteus, ii. 459

LEPIDOSTERNIDÆ, ii. 389

Lepidosternon, ii. 389

Lepilemur, ii. 176

Lepistes, ii. 450

LEPORIDÆ, ii. 242

Leporinus, ii. 445

Lepricornis, ii. 476

Leprodera, ii. 501

Leptalis, ii. 478