rds, 483
character of the New Zealand flora, cause of, 500
genera common to New Zealand and Australia, 501
Turdus, 17, 26
_Turdus fuscescens_, variation of, 58, 59
Tylor, A., on estimating the rate of denudation, 214
Tyrannidae, an American family, 50

U.
Uraniidae, 28
Uropeltidae, 30
Urotrichus, distribution of, 25
Ursus, 26

V.
Variation in animals, 57
amount of, in N. American birds, 58
Vegetation, local peculiarities of, 185
effects of Polar night on, 198
_Vesperugo serotinus_, range of, 14
_Vireo bellii_, supposed discontinuity of, 68
Vireonidae, an American family, 49

W.
Wallich, Dr., on habitat of globigerinae, 92
Warren, Mr. W., information on British lepidoptera, 347
Water, properties of, in relation to climate, 131, 133
Waterhouse, Mr., on Galapagos beetles, 284
Wales, peculiar fish of, 341
Warm climates of northern latitudes, long persistence of, 201
Watson, Mr. H. C., on the flora of the Azores, 256
on peculiar British plants, 359
on vegetation of railway banks, 513
Webb, Mr., on comparison of Mars and the Earth, 166
West Australia, rich flora of, 494
former extent and isolation of, 497
West Indies, a Neotropical district, 53
White, Dr. F. Buchanan, on the Hemiptera of St. Helena, 303
Mr. John, on native accounts of the moa, 477
Whitehead, Mr. John, on Bornean birds, 377
Wilson, Mr. Scott B., on birds of the Sandwich Islands, 314
Winged birds of New Zealand, 482
Wingless birds never inhabit continents, 437
their evidence against "Lemuria," 438
of New Zealand, 476
Wings of struthious birds show retrograde development, 437
{563}
Winter temperature of Europe and America, 196
Wolf, range of, 14
Wollaston, Mr. T. V., on insular character of St. Helena, 294
on St. Helena shells and insects, 297
Wood, Mr. Searles V., jun., on formation of "till," 114
on alternations of climate, 118
on causes of glacial epochs, 125
conclusive objection to the excentricity theory, 160
on continuous warm Tertiary climates, 180
Woodward, Dr. S. P., on Ammonites living in shallow water, 95
Woodward, Mr., on "Lemuria," 426
Wright, Dr. Percival, on lizards of the Seychelles, 431

Y.
Young, Professor J., on contemporaneous formation of deposits, 221
Young Island, lofty Antarctic, 522

Z.
Zoology of the Azores, 248
of Be