Pseudohydromys Riimmler, 1934 . Z. Säugetierk., 9:47

TYPE SPECIES: Pseudohydromys murinus Riimmler, 1934 .

COMMENTS: Member of the New Guinea Old Endemics (Musser, 1981c). Closely related to Mayermys and Neohydromys in phallic morphology (Lidicker, 1968) as well as external, cranial, and dental traits.