I would ask etropicals where they are collected. That is where you bought them, right? Without that information, searching for an ID would be close to impossible. There is a good chance they got these from Florida waters as I have see very similar shrimp from there. If so, there are some good books that reference the inverts in the area. I would also ask etropicals (or whatever vendor you bought them from) what is up as you didn't really get what you paid for. If I was ordering a glass shrimp, or anemone shrimp, then I would be OK with getting what you got, but when their web page clearly calls out their Latin name. I would expect to get the the right thing in that case.