kronckew. thank you for such vivid illumination, all helps to make a stronger day dream when handling it. On reflection I think you may have a point about the Lebel inspiration, but I do not think it would have been a problem to make a cruciform blade.
More dream stuff. I think the bayonet is from Ivory Coast and there abouts.
http://en.wikipedia.org/wiki/Samory_Tour%C3%A9