Hydrodamalis Retzius, 1794 . K. Svenska Vet.-Akad. Handl. Stockholm, 15, p. 292.

TYPE SPECIES: Hydrodamalis Stelleri Retzius, 1794 (= Manati gigas Zimmermann, 1780).

SYNONYMS: Nepus, Rytina, Stellerus .

COMMENTS: Subfamily Hydrodamalinae; see Domning (1978).