ii. 213

Rhinoceros-hornbill, figure of, i. 339

_Rhinocerotidæ_, N. American Tertiary, i. 136

RHINOCEROTIDÆ, ii. 213

RHINOCHETIDÆ, ii. 359

_Rhinochetus_, ii. 359

_Rhinococcyx_, ii. 309

_Rhinocrypta_, ii. 297

_Rhinoderma_, ii. 416

RHINODONTIDÆ, ii. 461

_Rhinodoras_, ii. 443

_Rhinogale_, ii. 195

_Rhinoglanis_, ii. 443

RHINOLOPHIDÆ, ii. 182

_Rhinolophus_, ii. 183

_Rhinophis_, ii. 374

RHINOPHRYNIDÆ, ii. 414

_Rhinophrynus_, ii. 414

_Rhinoplax_, ii. 317

_Rhinopoma_, ii. 183

_Rhinortha_, ii. 309

_Rhipidura_, ii. 271

_Rhizomys_, ii. 231

_Rhodeus_, ii. 452

_Rhodinocincla_, ii. 256

_Rhodona_, ii. 397

_Rhodopis_, ii. 108

_Rhodosttehia_, ii. 364

_Rhombomys_, ii. 230

_Rhombus_, ii. 441

_Rhopodytes_, ii. 309

_Rhopoterpe_, ii. 104

_Rhynchæa_, ii. 353

RHYNCHOCEPHALIDÆ, ii. 405

RHYNCHOCEPHALINA, ii. 405

_Rhynchocyon_, ii. 186

_Rhynchocyclus_, ii. 101

_Rhynchonella_, ii. 539

RHYNCHONELLIDÆ, ii. 532

_Rhynchops_, ii. 365

_Rhynchopsitta_, ii. 328

_Rhynchotus_, ii. 344

_Rhytina_, ii. 210, 211

_Rhytiodus_, ii. 445

_Ricinula_, ii. 507

_Rimator_, ii. 263

_Rimula_, ii. 511

_Rissa_, ii. 364

_Rissoa_, ii. 510

_Rita_, ii. 442

River-hog, of West Africa, figure of, i. 264 of Madagascar, figure of, i. 278

Rivers, limiting the range of mammalia, i. 12 limiting the range of birds, i. 17

River-scene in West Africa, i. 264

River-snails, ii. 510

_Rivulus_, ii. 450

Rock-snakes, ii. 381

Rocky mountain sub-region, ii. 129 mammalia of, ii. 129 birds of, ii. 130 reptiles, amphibia, and fishes of, ii. 130

Rodentia, classification of, i. 90 range of Palæarctic genera of, i. 242 range of Ethiopian genera of, i. 304 range of Oriental genera of, i. 374 range of Australian genera of, i. 476

_Rodentia_, European Pliocene, i. 113 Miocene of Greece, i. 116 European Miocene, i. 120 European Eocene, i. 126 N. American Post-Pliocene, i. 130 N. American Tertiary, i. 139 of Brazilian caves, i. 144 S. American Pliocene, i. 147 of S. American Eocene, i. 148

RODENTIA, ii. 229

Rodentia, general remarks on the distribution of, ii. 243

_Rodentia_, summary and conclusion, ii. 543

_Rohteichthys_, ii. 452

Rollers, ii. 311

_Rollulus_, ii. 339

_Romaleosoma_, ii. 474

Rose-chafers, ii. 494

_Rostrhamus_, ii. 349

Rough-tailed burrowing snakes, ii. 374

Ruff, figure of, i. 195

_Rupicapra_, ii. 224, 225

RUPICAPRINÆ, ii. 224

_Rupicola_, ii. 102, 293

RUPICOLINÆ, ii. 293

_Ruticilla_, ii. 259

RUTICILLINÆ, ii. 257

S.

_Saccobranchus_, ii. 441

_Saccodon_, ii. 445

SACCOMYIDÆ, ii. 233

_Saccomys_, ii. 233

_Saccostomus_, ii. 230

_Sagda_, ii. 516

Sahara, a debatable land, i. 251

Saiga, antelope of W. Tartary, i. 218

_Saiga_, ii. 223

_Saimiris_, ii. 175

Sakis, ii. 175

_Salamandra_, ii. 413

SALAMANDRIDÆ, ii. 413

_Salamandrina_, ii. 413

_Salarix_, ii. 448

_Salminus_, ii. 445

_Salmo_, ii. 447

SALMONIDÆ, ii. 447

_Salpinctes_, ii. 264

_Salpornis_, ii. 264

_Saltator_, ii. 99

Salvin, Mr., on birds of Galapagos, ii. 30

_Sambus_, ii. 496

Samoa Islands, birds of, i. 443

Sand-grouse, Pallas', of Mongolia, i. 226