Mensa
or MONS (monz) MENSA, one of the 14 constellations which Lacaille added to the heavens in connection with his work at the Cape of Good Hope.
It is named from the mountain which is a conspicuous feature of the landscape at the Cape. The constellation is a very inconspicuous one near the South Pole, its brightest star being only of 5.3 magnitude. It is surrounded by Octans, Hydrus, Dorado, Volans, and Chamæleon. a