A list of the mammals at present known to inhabit Siam

Recognises Rhinoceros sondaicus, the two-horned rhinoceros [sic], and Rhinoceros sumatrensis, the one-horned rhinoceros [sic]

Rhinoceros sondaicus, the two-horned rhinoceros, occurs in Siam but is rather rare, though found in suitable localities throughout south-western and northern Siam and Laos. Rhinoceros sumatrensis, the one-horned rhinoceros, also inhabits Siam where it is sparingly found along the western frontier, but its distribution is still very imperfectly known like that of the former species. It seems, however, to be more common in the southern districts than in the north.