Bašmu
Bašmu or Bashmu was an ancient Mesopotamian mythological creature, a horned snake with two forelegs and wings. It was also the Akkadian name of the Babylonian constellation equivalent to the Greek Hydra. The Sumerian terms ušum and muš-šà-tùr may represent differing iconographic types or different demons. It is first attested by a 22nd-century BC cylinder inscription at Gudea.