The Seram Island mountain rat is a small rodent recorded on Seram, Indonesia. Its ecology remains poorly known.
In the examined specimens, soft dull rufous fur covers the head and body; the dark brown tail is nearly as long as the head and body, and the hind feet are relatively long.
Detailed ecology is unknown. The known specimens were collected in primary montane forest on Seram at about 1,830 m.
An extinction-risk assessment has not been added yet.