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]

Tyrannidæ, an American family, [50]

U.

Uraniidæ, [28]

Uropeltidæ, [30]

Urotrichus, distribution of, [25]

Ursus, [26]