This large rat is known from western Java. It has a dark brown coat and a long tail; it is thought to be nocturnal and terrestrial.
Head and body length is 218–270 mm, and the tail is 258–309 mm. The back and underside are both dark brown, as are the tail, ears, and vibrissae.
It is thought to use primary forest at 900–1,350 m and is probably nocturnal and terrestrial. Its diet and breeding are unknown.
An extinction-risk assessment has not been added yet.