A preliminary list of the Odonata collected by Dr J. Kielland in Tanzania for Dr M.A. Lieftinck

An annotated list is presented o( 114 spp and sspp. (some identified to the genus only), deposited in the Rijksmuscum van Natuurlijke Historic. Leiden, and collected during 1962-197.1 at 51 localities; the bulk originating from the eastern shore of Lake Tanganyika. I he genus Notogomphus Hag. requires a revision. Specimens of Trithemis dorsalis (Ramb.) show througout the trithemine condition of the last ante-nodal cross vein rather than that of Helothemis Karsch. A ga/eteer is also provided.