OVERLAPPING OF FAUNAS. >) 399 samodendron, Crateeva, and Combretum, the following genera are found here :—The Protea of Abyssinia, Anona, Hexalobus, Coffea, Draceena, and, above all, miles of banana plantations. As the Victoria Nile forms a boundary between the languages of the northern Negro races and those of the Bantu tribes, so also it marks the line where the cultivation of corn in the north ceases, and sweet potatoes become the foundation of human sustenance. Generally speaking, the flora of the region under consideration forms an integral part (as Grant’s collections in particular show) of the large and yet so uniform vegetation of the North African region, which fact explains, for instance, the remarkable scarcity of palms in this country, the common Phcenix, Borassus (rarer in general towards the equator), and Calamus being the only palms known at present.

But a number of West African varieties also occur, probably attaining here their eastern limit, and marking out this country as a region of transition.

This position, however, is more unmistakable as regards the fauna. Unfortunately, little is known of Mammalia; it may therefore be sufficient to allude to the frequent occurrence of Aonyx, and to mention that during my sojourn in Uganda and Unyoro I was repeatedly told of a large anthropoid ape, which the Waganda called mastki, and the Wanyédro kinyabantu. But as, in spite of all my efforts, I did not succeed in obtaining a specimen, its existence in the Nile basin proper remains unverified. The case is different with birds. Besides the species and forms distributed generally over the Hast African sub-region, a large number of distinctly western kinds are found, of which I will mention Campephaga phenicea, Sw. ; Tricholais caniceps, Cass.; Telephonus minutus, Hartl.; Trichophorus flavigula, Cab.; Spermestes cucullatus, Sw.; Agapornis pullaria, li; and in particular the very common Psittacus erythacus, L. While it is thus sufficiently proved that the West African fauna extends to this country, we find, on the other hand, a number of true Hast African types which seem not to appear again farther westwards. JI will only mention Coracias caudata, L.; Phyllostrephus Sharpet,Sh.; Buceros cristatus, Riipp. ; Pwomas rufiventris, Riipp.; Schizorhis leucogastra, Riipp.; and ' Francolinus Grantu, Hartl. The district between the lakes must,