Weald, denudation of, [285].
Web of feet in water-birds, [185].
West Indian islands, mammals of, [396].
Westwood on species in large genera being closely allied to others, [57].
—— on the tarsi of Engidæ, [157].
—— on the antennæ of hymenopterous insects, [415].
Wheat, varieties of, [113].
White Mountains, flora of, [365].
Wings, reduction of size, [134].
—— of insects homologous with branchiæ, [191].