In Egyptian mythology, Apis or Hapis (alternatively spelled Hapi-ankh), is a bull-deity that was worshipped in theMemphis region. "Apis served as an intermediary between humans and an all-powerful god (originally Ptah, later Osiris, then Atum)." [quote: Virtual Egyptian Museum]
According to Manetho, his worship was instituted by Kaiechos of the Second Dynasty. Apis is named on very early monuments, but little is known of the divine animal before the New Kingdom. Ceremonial burials of bulls indicate that ritual sacrifice was part of the worship of the early cow deities and a bull might represent a king who became a deity after death. He was entitled "the renewal of the life" of the Memphite god Ptah: but after death he became Osorapis, i.e. theOsiris Apis, just as dead humans were assimilated to Osiris, the king of the underworld. This Osorapis was identified with the Hellenistic Serapis, and may well be identical with him. Greek writers make the Apis an incarnation of Osiris, ignoring the connection with Ptah.
Apis was the most important of all the sacred animals in Egypt, and, as with the others, its importance increased as time went on. Greek and Roman authors have much to say about Apis, the marks by which the black bull-calf was recognized, the manner of his conception by a ray from heaven, his house at Memphis with court for disporting himself, the mode of prognostication from his actions, the mourning at his death, his costly burial, and the rejoicings throughout the country when a new Apis was found. Auguste Mariette's excavation of the Serapeum at Memphis revealed the tombs of over sixty animals, ranging from the time of Amenophis III to that ofPtolemy Alexander. At first each animal was buried in a separate tomb with a chapel built above it.
Khamuis, the priestly son of Ramesses II (c. 1300 B.C.), excavated a great gallery to be lined with the tomb chambers; another similar gallery was added by Psammetichus I. The careful statement of the ages of the animals in the later instances, with the regnal dates for their birth, enthronement, and death have thrown much light on the chronology from the Twenty-second dynasty onwards. The name of the mother-cow and the place of birth often are recorded. The sarcophagi are of immense size, and the burial must have entailed enormous expense. It is therefore remarkable that the priests contrived to bury one of the animals in the fourth year of Cambyses.