The genus Corynorhinus consists of the big-eared bats, or American long-eared bats. Only four species occur in the genus, all occurring in North America. Members of this group were previously in the genus Plecotus, the long-eared bats, and were also then called lump-nosed bats. Populations of these species are generally uncommon and declining. Two subspecies, the Virginia big-eared bat (C. t. virginianus) and the Ozark big-eared bat (C. t. ingens) are federally endangered.

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