This small mouse lives in grassy cover from the Mexican lowlands north into southern Texas.
Adults have a finely grizzled gray back and a smoke-gray underside. The tail is sparsely furred.
It is mostly active at night and uses dense grass for cover. It eats plant seeds and small insects.
It makes a round nest of shredded grass or cactus fibers, placed in burrows, beneath fallen logs, or in dense grass.
IUCN Red List · Least Concern (LC) · Global