The New Mexican Shrew is recorded in the mountains of southern New Mexico. It has a dark-brown back and a grayish-brown underside, and is associated with open places in sheltered canyons surrounded by coniferous forest.
It has a dark-brown back, less reddish than in S. monticolus, and a grayish-brown underside. Its relatively long, narrow tail is brown above and paler below, with a small tuft of hair at the tip.
HMW volume 8 describes open areas in sheltered mountain canyons surrounded by coniferous forest as its habitat. The account gives no information on its food or activity times.
An extinction-risk assessment has not been added yet.