Abstract
The millipede tribe Tonkinosomatini Jeekel, 1968 is reviewed based on literature and fresh material. This tribe comprises two genera: Sellanucheza Enghoff et al, 2004 and Tonkinosoma Jeekel, 1953, including 6 species distributed in southern China andnorthern Vietnam. Among them, two new species are described from Vietmm, Sellanucheza hoffmani, sp. n., and Tonkinosoma jeekeli, sp. n. A key to all species of Tonkinosomatini and a map of their distribution are also provided for Vietnam fauna.