This is Thrilling Mystery for March 1936, no recorded artist and no ISFDB entry, and I am beginning to wonder if the dudes in the red robes and cowls aren’t the real fictional origin of the “redshirt.” I found this cover at Pulp Covers and verified its publication date via the Galactic Central index.
I find a craftsmanlike accuracy in the depiction of the knots. And I’m always titillated by Mad Monks.