The generic classification of water striders belonging to the veliid subfamily Haloveliinae is discussed and revised and a key to the genera provided. A new genus of marine haloveliines, Haloveloides gen. n., is described. The type species of the new genus, H. papuensis (Esaki) comb. n., is redescribed and recorded from Papua New Guinea, the Bismarck Archipelago, and the Solomons. H. browni (Lansbury) comb. n. is redescribed and recorded from the same areas as the type species. Five new species are described in the genus: H. brevicornis sp. n. (the Moluccas, Sulawesi, Palawan), sundaensis sp. n. (Sunda shelf areas), danpolhemi sp. n. (Palawan), cornuta sp. n. (Luzon), and femoralis sp. n. (Palawan). The cladistic relationships and biogeography of the species are discussed.