Europan (Mutiny on Europa)

Europans are a semi-sapient species which inhabits the jungles of Jupiter's moon Europa.

Biology
They are big, green, rotund bipeds with bulbous heads, faintly luminous large eyes and flipper-like hands which are able to hold objects such as spears. In spite of their appearance, they're surprisingly fast. They communicate with pipe-like sounds.

Appearances

 * "Mutiny on Europa", by Edmond Hamilton (1936)