Studies on the Streptaxidae (Mollusca: Gastropoda Pulmonata) of Malaŵi. 6. Gulella sursum spec. nov., a new streptaxid from the eastern rim of the Nyika Plateau

Gulella sursum spec. nov. is described from the eastern rim of the Nyika Plateau in northern Malaŵi. Although it displays a suite of characters which in themselves are not diagnostic, the combination of these (particularly the comparatively high number of whorls combined with a four-fold apertural dentition) seems to be as yet undescribed. The new species is probably a localized endemic as it is not represented in the otherwise comprehensive Malaŵi material gathered by other collectors and studied by the author.