||Ryt"i*na (?), n. [NL., fr. Gr. "ryti`s a wrinkle.] (Zoöl.) A genus of
||large edentulous sirenians, allied to the dugong and manatee,
||including but one species (R. Stelleri); -- called also Steller's sea
||cow. [Written also Rhytina.]
It is now extinct, but was formerly abundant at Behring's Island, near
Behring's Straits. It was twenty-five feet or more in length, with a
thick, blackish, naked skin. The last were killed in 1768 for their oil
and flesh.