Crab identification

[DashHills]

I am not new to the hobby, but this crab is new to me. I don't think he is good, since he just tore into my brittle star.

http://[url=https://flic.kr/p/RnoLP1]Reef crab by David Hill, on Flickr[/URL]

 

[AlSimmons]

Stone crab?

http://www.advancedaquarist.com/2010/12/inverts

 

[DashHills]

That is what I was thinking and why he is now out of the tank.