Dionean

Dioneans are a sapient humanoid species native to Saturn's moon Dione (a.k.a. Dian or Grish). Their arms end in sword-like blades. They have been described as "veritable born swordsmen".

Biology
Their right arms end in sword-like blades while their left arms end in claws. Their skin can be brown or red, and they can't grow facial hair. Females' swords are short and blunt compared to the males'.

Appearances

 * "Time's Mausoleum", by Neil R. Jones (1933)
 * "Swordsmen of Saturn", by Neil R. Jones (1939)
 * "The Dark Swordsmen of Saturn", by Neil R. Jones (1940)