As the first report of taxonomic studies on the Ta1itridae collected from the mainland and neighboring islands of Taiwan, two genera and four species from supralittoral zones were described or redescribed: Sinorchestia gen. n. (S. sinensis (Chilton, 1925) comb. n. and S. taiwanensis sp. n.) and Talorchestia sensu Morino & Miyamoto, 1988 ( T. martensii (Weber, 1892 and T. mindorensis Olerod, 1970).