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Show 1891.] ON SMALL MAMMALS FROM EASTERN AFRICA. 181 In July and August we received some Spiders from Messrs. Raleigh and C. F. R. Blandy. There are examples of two species of Tarantulas (Lycosa nigra and Lycosa porto-santana) and specimens of the Zebra Spider (Argyopefasciata). These are all from Madeira. One of the Zebra Spiders made a web and laid some eggs; these produced young ones, but they all died. The following papers were read :- 1. On a Collection of small Mammals made by Mr. F. J. Jackson in Eastern Africa. By O L D F I E L D T H O M A S. [Eeceived February 2, 1891.] (Plate XV.) By the kindness of the Misses Jackson I have been entrusted with the examination of the small Mammals collected by their brother, Mr. F. J. Jackson, during his recent successful expedition to the interior of the British East-African Company's Territories and up Mount Elgon. Mr. Jackson has already distinguished himself as a collector, and this last expedition, so far beyond the region explored by naturalists, has resulted in the discovery of a very large number of novelties. Mr. Jackson is much to be congratulated on his striking success in this direction \ The localities at which the Mammals were collected were as follows:- Mount Elgon, a volcanic peak, about 14,000 ft. in altitude, N.E. of the Victoria Nyanza, about 1° N., 34° 35' E.2 Never ascended previously by any European. Turquel, in the Siik country, between 1° and 2° N . and 34° and 35° E.; inland British East Africa. Mianzini, just east of Lake Naivasha, about 0° 55' S. and 36° 25' E.; at an altitude of nearly 9000 feet. The geographical affinities of the collection are extraordinarily mixed, and even dividing the localities, for Mount Elgon is nearlv 200 miles distant from Mianzini, the same peculiarity is observable. Thus of the three species marked as from Mount Elgon 3, one is new, with distinct South-African and Abyssinian, not West-African, affinities ; one is typically West-African (as are many of the birds), 1 See papers on the Birds by Messrs. Sharpe and Grant, 'Ibis,' 1891. 2 These positions are taken from the m a p in Mr. Joseph Thomson's ' Through Masaidand,' 1885. 3 Unfortunately some of the specimens, although numbered by Mr. Jackson, have not the localities marked on them, so that until his notes arrive the exact localities cannot be recorded ; and some of these specimens may also be from Mount Elgon. |