A New Piñon Mouse (Peromyscus truei) from Durango, Mexico

"A New Piñon Mouse (Peromyscus truei) from Durango, Mexico" by Robert B. Finley, Jr. is a scientific report highlighting the discovery and classification of a unique piñon mouse subspecies in Durango, Mexico. The document details the physical differences, especially its darker coloring, that set the Peromyscus truei erasmus apart from other piñon mice, after specimens where collected by J. R. Alcorn. It carefully describes the mouse's body measurements, habitat, and the area it occupies, pointing out how it has changed to fit into its rocky home. This work adds to what we know about animals in Mexico and shows how environment can change species.