Subgenus Micranthobatus is separated again from subg. Lampobatus sensu Focke (1911). The c.12 species have a scattered area of distribution, suggesting an old Gondwanan history. In Malesia five species are endemic in New Guinea (incl. New Britain), one is distributed in Borneo, the Philippines and Celebes. Two new species are described and one new variety. A key to the Malesian species is given. Remarks are made about two Australian species.