The Haliplidae of the Afrotropical region and those from Palaearctic North Africa are revised. Forty-four species are now known, including nine species described here as new.

The species assigned to the so-called ruficollis group are placed in the subgenus Haliplus s.str, because Dytiscus impressus Fabricius, 1787 [a junior objective synonym of Haliplus ruficollis (De Geer, 1774)] is here selected as type species for the genus Haliplus Latreille, following Holmen (1987).By this action the subgenus Haliplinus Guignot, 1939, previously often applied to the ruficollis group, has become a junior synonym of Haliplus.

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Th e Haliplidae (crawling water beetles) of Atlantic Canada are surveyed. Sixteen species are now known in the region. Four, including Haliplus fasciatus Aubé, Peltodytes duodecimpunctatus (Say), Peltodytes lengi Roberts, and Peltodytes litoralis Matheson, are newly recorded in the region, and P. litoralis is newly recorded in Canada. Six species are newly recorded in New Brunswick and four in Nova Scotia for a total of 10 new provincial records. Peltodytes muticus (LeConte) and P. duodecimpunctatus are removed from the faunal list of Nova Scotia. Th e zoogeography of the Haliplidae in Atlantic Canada is briefl y discussed.

An annotated checklist of Myxophaga (Hydroscaphidae and Sphaeriusidae) and Adephaga (including Gyrinidae, Haliplidae, Noteridae, Rhysodidae) from Iran is compiled. The total number of taxa include 39 species of 15 genera. The family Haliplidae is represented by 15 species, Gyrinidae by 12 species, Noteridae by seven species, Rhysodidae by three species, and Hydroscaphidae and Sphaeriusidae by one species each. Two species, Gyrinus (Gyrinus) dejeani Brullé 1832 (Gyrinidae) and Haliplus (Haliplidius) confinis Stephens 1828 (Haliplidae) are new records for the fauna of Iran.