A Xinthii is actually a species that was created on DeviantART. Their feet do not touch the ground. They float no matter what. They also have three toes and no ankles They look like this:

They can have pets called Eyebats. They commonly look like their owners. They look like this:

Here are some Xinthii trait charts. I know it's hard to read. If you can't read something, ask me and I'll tell you what it says. 

Please ask questions if you have any!