Maia Callisto with Zeus. Wronged by the love affair, Zeus' wife Hera in a jealous rage had transformed Callisto into a bear. Arcas is the eponym of Arcadia, where Maia was born. The story of Callisto and Arcas, like that of the Pleiades, is an "aition" for a stellar formation, the constellations Ursa Major and Ursa Minor, the Great and Little Bear. Her name is related to μαῖα ("maia"), an honorific term for older women related to μήτηρ ("mētēr") 'mother'. "Maia" also means "midwife" in Greek. In ancient Roman religion and myth, Maia embodied the concept of growth, as her name
HMS Ursa (R22) refitted for service in the Far East and joined the British Pacific Fleet where she served until 1945. She then returned to the United Kingdom and paid off in 1946. During the War "Ursa" was adopted by the Borough of Hendon as part of "Warship Week". The plaque from this adoption is held by the National Museum of the Royal Navy in Portsmouth. After the Second World War "Ursa" went into reserve at Portsmouth, transferring to the Chatham reserve in 1952. During 1953 and 1954 "Ursa" was converted to a Type 15 anti-submarine frigate with the new pennant number F200.