Class Mammalia Linnaeus, 1758 - mammals Subclass Theria Parker & Haswell, 1897 Order Lagomorpha Brandt, 1855 - lagomorphs Family Leporidae Batsch, 1788 - hares and rabbits Genus Sylvilagus Gray, 1867 - cottontails Subgenus Sylvilagus Gray, 1867 Sylvilagus cunicularius (Waterhouse, 1848) - Mexican cottontail [Sylvilagus cunicularius cunicularius]ᵀ (Waterhouse, 1848)