The adult male and egg morphology of a new anostracan species, Streptocephalus namibiensis , are described and illustrated. The new species resembles S. proboscideus and can be allocated to the same species group which also includes S. trifidus. Streptocephalus namibiensis has been collected from Bushmanland (northern Namibia), central Namibia, northern Botswana and the Transvaal Highveld (South Africa).