This medium-sized rat occurs on 3 Nicobar Islands. Its back has grizzled fur without spines, while its belly is light buff.
Head and body and the tail are each about 215 mm long; the hind foot is about 43 mm. The dorsal fur has no spines and is slightly grizzled, while the belly is light buff.
A 2016 summary lists tropical evergreen and semi-evergreen forest as its habitat. The same entry says information on population size is limited.
An extinction-risk assessment has not been added yet.