Acanthomys Lesson, 1842 accepted as Acomys Geoffroy, 1838 (original description)
Arvicanthis Lesson, 1842 (original description)
Cariacus Lesson, 1842 accepted as Odocoileus Rafinesque, 1832 (original description)
Cervequus Lesson, 1842 accepted as Hippocamelus Leuckart, 1816 (original description)
Chincha Lesson, 1842 accepted as Mephitis Geoffroy & Cuvier, 1795 (original description)
Cynofelis Lesson, 1842 accepted as Acinonyx Brookes, 1828 (original description)
Eryomis Lesson, 1840 (original description)
Guillinomys Lesson, 1842 (original description)
Lemmomys Lesson, 1842 accepted as Ellobius Fischer, 1814 (original description)
Micoureus Lesson, 1842 (original description)
Mysateles Lesson, 1842 (original description)
Napu Lesson, 1842 (original description)
Notomys Lesson, 1842 (original description)
Nyctalus Lesson, 1842 (original description)
Ocypetes Lesson, 1842 accepted as Murina Gray, 1842 (original description)
Peramys Lesson, 1842 accepted as Monodelphis Burnett, 1830 (original description)
Saricovia Lesson, 1842 accepted as Pteronura Gray, 1837 (original description)
Schoinobates Lesson, 1842 (original description)
Speromsciurus Lesson, 1842 (original description)
Subula Lesson, 1842 accepted as Mazama Rafinesque, 1817 (original description)
Tapoa Lesson, 1842 accepted as Phascogale Temminck, 1824 (original description)