The Genus Macrotus is a biological classification that refers to a group of species belonging to the bat family. Some synonyms for this genus include big-eared bats, long-eared bats and ghost-faced bats. These synonyms are derived from the physical characteristics of the species, as many of them have distinctive long ears that serve a variety of purposes including echolocation and thermoregulation. Other notable species within this genus include the California leaf-nosed bat and the Australian big-eared bat. Overall, the Genus Macrotus encompasses a diverse group of bat species that have adapted to a range of environments and ecological niches.