OLEACEAE _Jasminum Buchananii_ S. Moore (sp. nov.) APOCYNACEAE _Adenium coetaneum_ Stapf ASCLEPIADACEAE _Daemia extensa_ R. Br. _Sarcostemma viminalis_ R. Br. BORAGINACEAE _Cynoglossum lanceolatum_ Forsk. CONVOLVULACEAE _Ipomaea Wightii_ Choisy _Hewittia bicolor_ Wight SOLANACEAE _Solanum panduraeforme_ E. Mey. SCROPHULARIACEAE _Rhamphicarpa Heuglinii_ Hochst. _Rhamphicarpa serrata_ Klotzsch. var. _longipedicellata_ Engl. _Striga elegans_ Thunb. GESNERIACEAE _Streptocarpus caulescens_ Vatke (Ulugúru Mts.) _Streptocarpus_ sp. (Ruwu River) PEDALINEAE _Sesamum_ (sp. nov.?) ACANTHACEAE _Thunbergia affinis_ var. _pulvinata_ S. Moore _Thunbergia alata_ Bojer _Barleria maculata_ S. Moore (sp. nov.) _Ruellia_, sp. _Eranthemum Hildebrandtii_ C. B. Clarke _Ecbolium namatum_ C. B. Clarke _Barleria_, spp. _Barleria ramulosa_ C. B. Clarke _Somalia_ (sp. nov.). _Blepharis linariaefolia_ Pers. _Justicia Fischeri_ Lindau VERBENACEAE _Priva leptostachya_ Thunb. LABIATAE _Leucas_, sp. _Erythrochlamys spectabilis_ Gürke _Coleus decumbens_ Gürke _Plectranthus buraeensis_ S. Moore (sp. nov.) _Leucas leucotricha_ Baker NYCTAGINEAE _Boerhaavia plumbaginea_ Cav. _Boerhaavia pentandra_ Burch. AMARANTACEAE _Aerua lanata_ Juss. _Aerua brachiata_ Mart. _Digera arvensis_ Forsk. _Centema rubra_ Lopr. CHENOPODIACEAE _Chenopodium album_ L. EUPHORBIACEAE _Phyllanthua amarus_ Schum. & Thonn. (Species possibly new when genus only is given.) A. B. RENDLE. BRITISH MUSEUM (NAT. HIST.) _30th May, 1916_. In collecting in this way, in odd hours, one was constantly moving about, and to that, strange as it may seem, I ascribe my good fortune in keeping fit and free of sickness during the first two years of service in the tropics. I feel sure, even if one feels listless and exhausted, that it is a mistake to lie about camp in the oppressive heat when off duty, pestered by flies and camp dust, and brooding over your discomforts. Some of the men of the battalion became interested in this searching for curious things, and, after a time, it was noticeable that they were the ones most contented with the hardships they endured, and among the fittest on trek. Africa had undoubtedly the power to depress men’s spirits in no light manner, and thus, to find something to do and think about, in any interval of idleness, was a good thing. [Sidenote: PESTS OF CAMP AND TREK] Lastly, I will refer to the pests of camp-life and trek.