UNDERSEA KINGDOM (movie serial)

UNDERSEA KINGDOM (Walt Lee, Naha; Parish and Pitts: THE UNDERSEAS KINGDOM). Serial, 12 parts, 25 reels. B. Reeves Eason and Joseph Kane, dirs. USA: Republic, 1936. Condensed to 100-minute TV feature, SHARAD OF ATLANTIS, 1961.

See for "ray machine," mixture of old and futuristic technology, domed Atlantis, and relatively early robots (called "Volkites").