The genus Peromyscus contains species commonly referred to as deer mice. This is a genus of New World mouse only distantly related to the common house mouse, Mus musculus. The most common species of deer mouse in the continental United States are two closely related species, P. maniculatus, and P. leucopus. In the USA, Peromyscus is also the most populous mammalian species overall.
Edward Howe Forbush Useful Birds and Their Protection (Boston, MA: Massachusetts State Board of Agriculture, 1907)