Rheomys Thomas 1906

Rheomys Thomas 1906, Ann. Mag. Nat. Hist., ser. 7, 17: 421.

Type Species: Rheomys underwoodi Thomas 1906

Synonyms: Neorheomys Goodwin 1959 .

Species and subspecies: 4 species:

Species Rheomys mexicanus Goodwin 1959

Species Rheomys raptor Goldman 1912

Species Rheomys thomasi Dickey 1928

Species Rheomys underwoodi Thomas 1906

Discussion: Ichthyomyini. All named forms suggested as conspecific under trichotis by Hershkovitz (1966 c) but Voss (1988) recognized four species. Formerly included trichotis (Tate, 1932), a species later designated as the type of Chibchanomys (Voss, 1988) . Neorheomys, diagnosed as a subgenus (Goodwin, 1959 a), was placed in full synonymy by Voss (1988). Separation from Ichthyomys questioned by Ellerman (1941) and Hall (1981); relationships, generic stature, and Mesoamerican endemism illuminated by Voss (1988).