This deermouse has a dull gray back and white underside. It has been recorded on islands in Mexico's Gulf of California.
The back is dull gray and the underside white; the tail is bicolored, and the yellow-brown face has a dark ring around each eye.
On Santa Cruz Island, most collected specimens came from canyon bottoms. The species was commonly recorded in canyons with ground vegetation and cacti.
An extinction-risk assessment has not been added yet.