Mayermys Laurie and Hill, 1954 . List of Land Mammals of New Guinea, Celebes and Adjacent Islands, p. 133.

TYPE SPECIES: Mayermys ellermani Laurie and Hill, 1954 .

COMMENTS: Member of the New Guinea Old Endemics (Musser, 1981c:167). Phallic morphology similar to Neohydromys (Lidicker, 1968) . Mayermys, Leptomys, Neohydromys, and Pseudohydromys share a derived configuration of cephalic arterial pattern (Musser and Heaney, 1992).