THE ANNALS AND MAGAZINE OF NATURAL HISTORY. [SEVENTH SERIES.] No. 12. DECEMBER 1898. LTV. — The Arachnida from the Regions of Lakes Nyasa and Tanganyika contained in the Collection of the British Museum. By R. I. POCOCK. [Plate XIII.] The few species of Arachnicla from Lake Tanganyika recorded in this paper were collected by Mr. Alexander Carson and Mr. W. H. Nutt. For the more extensive series from Nyasaland the Museum is indebted principally to Mr. A. Whyte, acting under the direction of Sir H. H. Johnston. A few from this neighbourhood were also obtained by Mr. R. Crawshay, by Dr. Percy Rendall, and by the members of the Universities' Mission to Central Africa. The specimens which Sir Harry Johnston used his influence to procure were received in two instalments : the first com-prised the species collected on Mount Zomba, at the southern extremity of Lake Nyasa; the second, those from the Nyika plateau and neighbouring localities at the northern end of Lake Nyasa and between it and the southern end of Lake Tanganyika. Unfortunately, there are no exact localities for most of the examples received from the Universities' Mission. Ann. <& Mag. N. Hist. Scr. 7. Vol. ii. 80