The facts on which these statements rest, will be found more fully detailed in the Author's Presidential Address to the Entomological Society of London for the year 1871.

[9]

Quarterly Journal of the Geological Society, 1874, p. 494.

[10]

Dr. Schweinfurth has accurately determined the limits of the sub-region at the point where he crossed the watershed between the Nile tributaries and those of the Shari, in 4½° N. Lat. and 28½° E. Long. He describes a sudden change in the character of the vegetation, which to the southward of this point assumes a West-African character. Here also the chimpanzee and grey parrot first appear, and certain species of plants only known elsewhere in Western Africa.

[11]

There are also some special resemblances between the plants of Madagascar and South Africa, according to Dr. Kirk.

[12]

As so many typical Malay groups are absent only from the Philippines, I have adopted the term "Malaya," to show the distribution of these, using the term "Indo-Malaya" when the range of the group includes the Philippines. This must be remembered when consulting the tables of distribution at the end of this chapter.

[13]