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Abstract
Stauroneis zairensis sp. nov. from a fishpond in Kinshasa, Zaïre.
A new species, Stauroneis zairensis, is described from a fishpond in the vicinity of Kinshasa, Zaire. The new species belongs to the small group of Stauroneis characterized by areolae arranged in longitudinal and transapical striae crossing each other at right angles. In this group, it differs from St. lineolata, St. stodderi and St. staurolineata by the much finer longitudinal striae and by the form of the central area, which is enlarged near the margins of the valves; a further difference from St. staurolineata is that the longitudinal ridges are interrupted at the stauros. The new species is illustrated and a key is given to the species of this group. Owing to the scarcity of data on the diatoms from this part of Zaire, a list is given of the diatoms accompanying S. zairensis in the original material.
