FRESH-WATER OLIGOCHAETA OF SOME URBAN WATERCOURSES IN THE RUSSIAN FAR-EAST

40 oligochaete species are identified in the lowland watercourses near Ussurijsk and Vladivostok. In the Razdol'naja River, Naididae are com mon, increasing in numbers in enriched urban stretches where tubificid s become abundant, including Limnodrilus hoffmeisteri CLAPAREDE and Tu bifex tubifex (MULLER). A freshwater population of Monopylephorus rubr oniveus LEVINSEN exists there. The endemics of the Amur zoogeographica l Province, Haber amurensis (SOKOL'SKAJA et HRABE) and Piguetiella amu rensis SOKOL'SKAJA, are redescribed. Stylaria fossularis LEIDY is a va lid species. Rhyacodrilus coccineus (VEIDOVSKY) and its East Asian con geners form a closely related species complex. A new generic name is p roposed instead Muliercula (TIMM). According its oligochaete fauna, th e Amur-Japanese freshwater zoogeographical Subregion is closer to the Holarctic than to the Sino-Indian Region.