The constellation and zodiacal sign Pisces.
An Arabic constellation placed instead of the Piscis Australis, because the swallow arrives in Arabia about the time of the heliacal rising of the Fishes.
Strange, too, how the old pagan names for the constellations—the Ram, the Bull, the Twins (Castor and Pollux), the Crab, the Lion, the Virgin, the Scales, the Scorpion, the Archer, the Horned Goat, the Water-carrier, and the Fishes, have persisted all these thousands of years in spite of attempts made by philosophers of the Christian and other faiths to give them more prosaic or more religious names.