So large a portion of the Ethiopian subregion lies between the tropics that no surprise need be expressed at the richness of its fauna relatively to that of the last two subregions we have considered.
The Australian Subregion comprises Australia and Tasmania.
The vegetation of the subregion is rich in shrubs: myrtle, bay, Cistus, Pistacia, A rbz;tus, heaths in its western portion, and the ground-palm (Chamaerops).
The Ethiopian Subregion comprises the whole of Africa and Madagascar, except the Barbary States, but including Arabia; in the north-east the subregion melts into the Palaearctic between Palestine and the Persian Gulf.
Like the Nearctic the Palaearctic subregion seems to possess but one single peculiar family of land birds, the Panuridae, represented by the beautiful species known to Englishmen as the bearded titmouse, Panurus biarmicus.
The Palaearctic Subregion is, broadly speaking, Europe and Asia, with the exception of India and China.
The Oriental Subregion comprises all the countries and numerous islands between the Palaearctic and Australian areas; it possesses upwards of seventy families, of which, however, only one is peculiar, but this family, the Eurylaemidae or broadbills, is of great importance since it represents all the Subclamatores.
Restricted to and peculiar to the subregion is only the little Oscine family of Chamaeidae, restricted to the coast district of California.
There is no family of birds common to the Nearctic area and the Antillean subregion without occurring also in other parts of the Neotropical region, a fact which proves its, affinity to the latter.
The natural division of the subregion is that into an African and a Madagascar province.