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We studied the rotifer fauna of one of the most pristine peat-swamps in the Southern Thai province of Narathiwas, To Daeng peat swamp. The samples yielded a total of sixty-seven rotifer species. Of these, three -Keratella mixta (Oparina-Charitonova), Lecane enowi Segers & Mertens and Monommata dentata Wulfert- are new to the Oriental region and the Thai fauna, one, Keratella taksinensis n. sp., is new to science. The fauna consists mainly of cosmopolitan (sensu lato) species, complemented by some Paleotropical and endemic taxa, and is dominated by littoral-benthonic taxa, especially Lecane and, to a lesser extent, Lepadella.

As part of a survey of the rotifer fauna of Burundi, Lecanidae from Kashira and the floodplain of the river Rusizi in Northwest Burundi are reported. Thirty-four species of Lecane were found. Twenty-five of them are new to Burundi, raising the total Burundian Lecane record to thirty-five. Three species, Lecane aeganea Harring, 1914, L. eswari Dhanapathi, 1976 and L. subulata (Harring & Myers, 1926) are new to the African fauna, the presence of L. baimaii Sanoamuang & Savatenalinton, 1999 in Africa is confirmed. The fauna consists mainly of cosmopolitan and tropicopolitan taxa, accompanied by several Eastern Hemisphere taxa, and one each of pantropical, endemic and arctic-temperate taxa. The latter, occurring in a high-altitude locality, may be a glacial relict.

The rotifer fauna present in Thale-Noi Lake, Pattalang Province, Thailand on the 16th September 1995 is reported. A total of 106 species, the majority of which belong to the genera Lecane (31 %), Lepadella (13 %) and Brachionus (9 %) are recorded. Cephalodella songkhlaensis n.sp. and Trichocerca siamensis n.sp. are described, Lecane calcaria Harring & Myers is redescribed. An additional fourteen rotifer species are recorded for the first time from Thailand. The genera Metadiaschiza Fadeew and Paracephalodella Berzins are synonymized with Cephalodella Bory de St. Vincent.